Patent Grant
12198622
This is a National Stage Application filed under 35 U.S.C. 371 based on International Patent Application No. PCT/CN2021/103123, filed on Jun. 29, 2021, which claims priority to Chinese Patent Application No. 202110460556.9 filed with the China National Intellectual Property Administration (CNIPA) on Apr. 27, 2021, the contents of which are incorporated herein by reference in their entireties.
The present application relates to the field of display technologies, for example, a display panel and a display device.
With the development of display technologies, the display panel with a high screen-to-body ratio has become the focus of research. To increase the screen-to-body ratio, an optical element reservation area is usually provided in the display area of the display panel to accommodate optical elements such as a front-facing camera, an infrared sensing device, and a fingerprint recognition element.
However, since the optical element reservation area needs to achieve the display function, light-emitting elements and pixel circuits in one-to-one correspondence with the light-emitting elements need to be provided in the optical element reservation area. This affects the transmittance of the optical element reservation area and leads to poor optical performance of the optical elements, such as the unsharp imaging of the front-facing camera, thereby affecting the capturing effect.
The present application provides a display panel and a display device to improve the transmittance of the first display area, thereby improving the optical performance of optical elements arranged in an optical element reservation area.
A display panel is provided. The display panel includes a display area and pixel circuits. The display area includes a first display area and a second display area. The first display area is used as an optical element reservation area. The pixel circuits include a first pixel circuit and a second pixel circuit. The second pixel circuit is located in the second display area. The first display area includes minimum repeating units arranged in rows and columns. Each of the minimum repeating units includes first light-emitting elements of at least three different colors. Multiple first light-emitting elements include a light-emitting element of a first color, a light-emitting element of a second color, and a light-emitting element of a third color. The first pixel circuit is configured to drive the first light-emitting elements to emit light. In at least one minimum repeating unit, at least two first light-emitting elements of at least one same color are electrically connected to the same first pixel circuit.
A display device is further provided. The display device includes the display panel as described in any embodiment of the present application.
The present application is described below in conjunction with drawings and embodiments. The embodiments described herein are merely intended to explain the present application and not to limit the present application. For ease of description, only part, not all, of structures related to the present application are illustrated in the drawings.
For the preceding problems, the embodiments of the present application provide a display panel. The display panel includes a display area and pixel circuits. The display area includes a first display area and a second display area. The first display area is used as an optical element reservation area. The pixel circuits include a first pixel circuit and a second pixel circuit. The second pixel circuit is located in the second display area. The first display area includes minimum repeating units arranged in rows and columns. The minimum repeating unit includes first light-emitting elements of at least three different colors. Multiple first light-emitting elements include a light-emitting element of a first color, a light-emitting element of a second color, and a light-emitting element of a third color. The first pixel circuit is configured to drive the first light-emitting elements to emit light. In at least one minimum repeating unit, at least two first light-emitting elements of at least one same color are electrically connected to the same first pixel circuit. With the preceding technical scheme, the number of first pixel circuits can be reduced, thereby reducing the ratio of the non-transparent area in the first display area and improving the transmittance of the optical element reservation area.
The schemes in the embodiments of the present application will be described in conjunction with the drawings in the embodiments of the present application. The embodiments described below are part, not all, of the embodiments of the present application.
In an embodiment, the display panel may further include a non-display area NA. The display area AA is configured to display pictures. The non-display area NA does not display the pictures, and a gate driver circuit, a driver chip and the like are arranged in the non-display area NA. The display area AA includes the first display area A1 and the second display area A2. The first display area A1 may be used as the optical element reservation area. Optical elements may include a camera, an infrared sensor device, a fingerprint recognition element and the like, which is not limited herein. The shape of the first display area A1 may be set according to the shape of a light sensing surface of the optical element, which is not limited herein. Exemplarily, the first display area A1 may be in the shape of a circle (as shown in
The implementation mode of the pixel circuit PC may be set according to practical situations, which is not limited herein. Exemplarily, the pixel circuit PC includes “7TIC”, “2TIC” and the like. “T” denotes a transistor and “C” denotes a capacitor. Exemplarily,
In an embodiment, the first reset transistor M5 and the threshold compensation transistor M4 may be double-gate transistors. Correspondingly, the display panel further includes an initialization signal line, a scan line SCANa, a scan line SCANb, a scan line SCANc, a light-emitting control signal line, a data signal line, a first power line and a second power line. The initialization signal line is configured to transmit an initialization signal to the initialization signal terminal Vref. The scan line SCANa is configured to transmit a first scan signal to the first scan signal terminal Scan1. The scan line SCANb is configured to transmit a second scan signal to the second scan signal terminal Scan2. The scan line SCANc is configured to transmit a third scan signal to the third scan signal terminal Scan3. The light-emitting control signal line is configured to transmit a light-emitting control signal to the light-emitting control signal terminal Emit. The data signal line is configured to transmit a data signal to the data signal terminal Data. The first power line is configured to transmit a first power signal to the first power terminal PVDD. The second power line is configured to transmit a second power signal to the second power terminal PVEE. The structure of the second pixel circuit PC2 and the structure of the first pixel circuit PC1 may be the same or different, and are not limited herein.
In an embodiment, the display panel may further include a virtual pixel circuit. The virtual pixel circuit is located in the non-display area NA and on two sides of the display area AA. Such configuration of the virtual pixel circuit is to ensure the uniformity of the manufacturing process of the display area AA. The implementation mode of the virtual pixel circuit may be set according to practical situations, which is not limited herein. Exemplarily.
In an embodiment, referring to
The pixel circuit PC includes the first pixel circuit PC1 and a second pixel circuit PC2. The first pixel circuit PC1 may be located in the first display area A1; or may be located in the second display area A2; or part of first pixel circuits PC1 are located in the first display area A1 and another part of the first pixel circuits PC1 are located in the second display area A2, which are not limited herein. Examples will also be described hereinafter and repetition is not made herein. The second pixel circuit PC2 is located in the second display area A2.
The first display area A1 includes the minimum repeating units U arranged in rows and columns. The minimum repeating unit U described here refers to the first light-emitting elements L1 of all of colors, and the minimum repeating unit U is the minimum unit having repeatability arranged in the row direction or the column direction among all of the first light-emitting elements L1 arranged in the first display area A1. The row direction may be a direction in which the scan line in the display panel extends, and the column direction may be a direction in which the data signal line in the display panel extends. The minimum repeating unit U includes the first light-emitting elements L1 of at least three different colors. The first pixel circuit PC1 is configured to drive the first light-emitting elements L1 to emit light. The minimum repeating unit U includes the first light-emitting elements L1 of three colors. In the minimum repeating unit U, the number and the arrangement mode of multiple first light-emitting elements L1 may be set according to practical situations, and are not limited herein. Examples will also be described hereinafter and repetition is not made herein. In an embodiment, the second display area A2 further includes second light-emitting elements L2, and the second pixel circuit PC2 is configured to drive the second light-emitting elements L2 to emit light. In an embodiment, referring to
“In at least one minimum repeating unit U, at least two first light-emitting elements L1 of the same color may be electrically connected to the same first pixel circuit PC1”, that is, one first pixel circuit PC1 may drive at least two first light-emitting elements L1 of the same color (referred to as a “one driving multiple”). The following cases may be included: the “one driving multiple” within the same minimum repeating unit U is included in the first display area A1, that is, in one minimum repeating unit U, at least two first light-emitting elements L1 of the same color is electrically connected to the same first pixel circuit PC1, e.g., two, more or all of the first light-emitting elements L1 of the same color within the same minimum repeating unit U are electrically connected to the same first pixel circuit PC1; the “one driving multiple” among two or more minimum repeating units U is included in the first display area A1, that is, among two or more minimum repeating units U, at least two first light-emitting elements L1 of the same color are electrically connected to the same first pixel circuit PC1, e.g., two, more or all of the first light-emitting elements L1 of the same color among two or more minimum repeating units U are electrically connected to the same first pixel circuit PC1; both the “one driving multiple” within the same minimum repeating unit U and the “one driving multiple” among two or more minimum repeating units U are included in the first display area A1. In this way, the number of first pixel circuits PC1 can be reduced. In an embodiment, referring to
The line type of the co-drive connection line W1 may also be set according to practical situations, which is not limited herein. In an embodiment, the co-drive connection line W1 may include a straight line (as shown in
In the case where any two co-drive connection lines W1 of co-drive connection lines W1 configured to electrically connect the light-emitting elements do not intersect, all of the co-drive connection lines W1 may be located in the same layer. In this way, the process of the display panel can be simplified, thereby reducing the cost. Alternatively, at least two of the co-drive connection lines W1 may be arranged in different layers. In this way, the distance between the co-drive connection lines W1 can be increased, thereby weakening the signal coupling between the co-drive connection lines W1. In the case where two co-drive connection lines W1 of the co-drive connection lines W1 configured to electrically connect the first light-emitting elements L1 intersect, the two intersected co-drive connection lines W1 are arranged in different layers. In this way, the short circuit can be avoided. In an embodiment, a co-drive connection line layer 131 may be separately arranged in the display panel to form the co-drive connection lines W1 (as shown in
In the case where the first pixel circuits PC1 are arranged in the first display area A1, at least two first light-emitting elements L1 of at least one same color are electrically connected to the same first pixel circuit PC1 so that the number of first pixel circuits PC1 in the first display area A1 can be reduced, thereby reducing the area occupied by the first pixel circuits PC1 in the first display area A1, increasing the area ratio of the transparent area in the first display area A1, and increasing the transmittance of the first display area A1. Moreover, in the case where the “one driving multiple” in the first display area A1 is the “one driving multiple” within the minimum repeating unit U, the light-emitting spots in the entire minimum repeating unit U increase so that the definition of pixels in the minimum repeating unit U viewed by human eyes can be increased, thereby improving the display effect. In the case where the “one driving multiple” in the first display area A1 is the “one driving multiple” among at least two minimum repeating units U, the uniformity of the first display area A1 can be improved, thereby improving the display effect. The increase in the transmittance of the first display area A1 can improve the optical performance of the optical elements accommodated in the first display area A1, facilitating increasing the density of the first light-emitting elements L1 in the first display area A1 while satisfying the optical performance of the optical elements, thereby improving the display effect of the display panel.
In the display panel according to the embodiments of the present application, the first display area A1 is used as the optical element reservation area, and in the first display area A1, in at least one minimum repeating unit U, at least two first light-emitting elements L1 of at least one same color are electrically connected to the same first pixel circuit PC1. In this way, the first pixel circuits PC1 do not need to be in one-to-one correspondence with the first light-emitting elements L1, and the number of first pixel circuits PC1 is reduced, facilitating reducing the ratio of the non-transparent area in the first display area A1, solving the issue of low transmittance of the optical element reservation area, and improving the transmittance of the optical element reservation area.
In an embodiment, the first light-emitting elements L1 include red light-emitting elements, green light-emitting elements and blue light-emitting elements; the number of red light-emitting elements, the number of green light-emitting elements and the number of blue light-emitting elements are the same; the same first pixel circuit PC1 is electrically connected to n1 red light-emitting elements, the same first pixel circuit PC1 is electrically connected to n2 green light-emitting elements, and the same first pixel circuit PC1 is electrically connected to n3 blue light-emitting elements; and it may be set that n3>n1 and n3>n2, where n1, n2 and n3 are positive integers. The blue light-emitting element has the shortest life, the red light-emitting element has the longest life, and the green light-emitting element has a life between the life of the blue light-emitting element and the life of the red light-emitting element. Therefore, n3 is set to be the maximum, facilitating reducing the current density flowing through the blue light-emitting elements to a greater extent, further prolonging the life of the blue pixels to a greater extent and finally prolonging the life of the display panel. In an embodiment, n1=n2. Since the human eyes are most sensitive to green, such setting can ensure the display effect of the display panel in the human eyes.
In an embodiment, the first light-emitting elements L1 include red light-emitting elements, green light-emitting elements, and blue light-emitting elements; in the first display area A1, the same first pixel circuit PC1 is electrically connected to n4 red light-emitting elements, the same first pixel circuit PC1 is electrically connected to n4 green light-emitting elements, and the same first pixel circuit PC1 is electrically connected to n4 blue light-emitting elements; and the number of first pixel circuits PC1 electrically connected to the blue light-emitting elements may be set to be maximum, and n4 is an integer greater than 1. In this way, the current density flowing through the blue light-emitting elements can be reduced, thereby prolonging the life of the blue pixels to a greater extent, and finally prolonging the life of the display panel. In an embodiment, the number of first pixel circuits PC1 electrically connected to the red light-emitting elements is the same as the number of first pixel circuits PC1 electrically connected to the green light-emitting elements. Since the human eyes are most sensitive to green, such setting can ensure the display effect of the display panel in the human eyes.
For “In the same minimum repeating unit U, at least two first light-emitting elements L1 of the same color are electrically connected to the same first pixel circuit PC1”, there may be multiple implementation modes that are described below in detail by means of examples but are not intended to limit the present application.
In an embodiment, as shown in
First light-emitting elements L1 of m colors are included in the same minimum repeating unit U. In the same minimum repeating unit U, first light-emitting elements L1 of m1 colors include at least two first light-emitting elements L1, where m is a positive integer greater than or equal to 3, and m1 is a positive integer greater than or equal to 1. For the first light-emitting elements L1 of m1 colors, among first light-emitting elements L1 of m2 colors, for first light-emitting elements L1 of each color, two, more or all of the first light-emitting elements L1 of the same color in the same minimum repeating unit U may be configured to be electrically connected to the same first pixel circuit PC1 (i.e., the “one driving multiple”); moreover, among first light-emitting elements L1 of m3 colors, the first light-emitting elements L1 are in one-to-one correspondence with the first pixel circuits PC1 (i.e., a “one driving one”), where m2+m3=m1, m2 is a positive integer greater than or equal to 1, and m3 is an integer greater than or equal to 0). Exemplarily, the same minimum repeating unit U includes the following first light-emitting elements L1 of three colors, red light-emitting elements, green light-emitting elements and blue light-emitting elements, and in the same minimum repeating unit U, the first light-emitting elements L1 of each color include at least two first light-emitting elements L1. Thus, one, two or three of cases described below may be included in the same minimum repeating unit U. First, two or more red light-emitting elements in the same minimum repeating unit U are electrically connected to the same first pixel circuit PC1. Second, two or more green light-emitting elements in the same minimum repeating unit U are electrically connected to the same first pixel circuit PC1. Third, two or more blue light-emitting elements in the same minimum repeating unit U are electrically connected to the same first pixel circuit PC1.
Compared with the case where first light-emitting elements L1 of the same color in multiple minimum repeating units U spaced apart are electrically connected to the same first pixel circuit PC1, the first light-emitting elements L1 of the same color in the same minimum repeating unit U are electrically connected to the same first pixel circuit PC1, facilitating reducing the design difficulty of a co-drive connection line W1 for electrically connecting the first light-emitting elements L1 to the first pixel circuit PC1, shortening the length of the co-drive connection line W1 and reducing the loss on the co-drive connection line W1.
The light-emitting elements of the same color electrically connected with the same first pixel circuit PC1 have the same light-emitting brightness. At least two first light-emitting elements L1 of the same color electrically connected to the same first pixel circuit PC1 belong to the same minimum repeating unit U, so that the distance between the at least two first light-emitting elements L1 of the same color can be closer, the sawtooth is not prone to occur during the display, and it is facilitated that the display effect is improved.
In an embodiment, as shown in
The same first pixel circuit PC1 crosses at least two minimum repeating units U to carry out the “one driving multiple”, so that the same first pixel circuit PC1 can drive more first light-emitting elements L1, facilitating reducing the number of first pixel circuits PC1, thereby increasing the ratio of the transparent area in the first display area A1. Moreover, the first pixel circuit PC1 crosses at least two minimum repeating units U to carry out the “one driving multiple” so that which first light-emitting elements L1 driven by the same first pixel circuit PC1 can be flexibly configured.
In an embodiment, as shown in
The at least two adjacent minimum repeating units U in the row direction X or the column direction Y described here refer to at least two minimum repeating units U arranged in sequence in the row direction X or the column direction Y.
Compared with the case where the same first pixel circuit PC1 carries out the “one driving multiple” among multiple minimum repeating units U that are far away from each other or irregularly dispersed, that the first pixel circuit PC1 carries out the “one driving multiple” among at least two adjacent minimum repeating units U in the row direction X or in the column direction Y facilitates reducing the design difficulty of the co-drive connection line W1 for electrically connecting the first light-emitting elements L1 to the first pixel circuit PC1, shortens the length of the co-drive connection line W1 and reduces the loss on the co-drive connection line W1. Moreover, the distance among the multiple first light-emitting elements L1 electrically connecting to the same first pixel circuit PC1 can be made closer, and the sawtooth is not prone to occur during the display, improving display effect.
The number of minimum repeating units U involved by the first light-emitting elements L1 electrically connected to the same first pixel circuit PC1 and whether the minimum repeating units U are arranged in sequence in the row direction X or in the column direction Y may be set according to practical situations, and are not limited herein.
In an embodiment, as shown in
M*N minimum repeating units U in M rows and N columns refer to that N minimum repeating units U in each row are adjacent in the row direction X, and M minimum repeating units U in each row are adjacent in the column direction Y. In this way, the M*N minimum repeating units U in M rows and N columns are arranged compactly and regularly.
The minimum repeating units U involved by the same first pixel circuit PC1 for carrying out the “one driving multiple” are enlarged to at least M*N minimum repeating units U in M rows and N columns, so that more choices can be made when which first light-emitting elements L1 are driven by the same first pixel circuit PC1 is designed, facilitating reducing the design difficulty. Moreover, compared with the case where the same first pixel circuit PC1 carries out the “one driving multiple” among multiple minimum repeating units U that are far away from each other or irregularly dispersed, that the first light-emitting elements L1 driven by the same first pixel circuit PC1 are assigned among the M*N minimum repeating units U arranged compactly and regularly facilitates reducing the design difficulty of the co-drive connection line W1 for electrically connecting the first light-emitting elements L1 to the first pixel circuit PC1, shortens the length of the co-drive connection line W1 and reduces the loss on the co-drive connection line W1. Moreover, the distance between the multiple first light-emitting elements L1 electrically connecting to the same first pixel circuit PC1 can be closer, and the sawtooth is not prone to occur during the display, improving display effect.
The values of M and N may be set according to practical situations, and are not limited herein.
In an embodiment, as shown in
With such arrangement, the number of first pixel circuits PC1 can be reduced, thereby improving the transmittance of the first display area A1. Moreover, the distance between the multiple first light-emitting elements L1 electrically connecting to the same first pixel circuit PC1 can be closer, the connection loss can be reduced, and the occurrence of the sawtooth can be avoided, improving the display effect.
In an embodiment, as shown in
With such arrangement, the number of first pixel circuits PC1 can be further reduced, thereby improving the transmittance of the first display area A1.
On the basis of the preceding technical schemes, in an embodiment, at least one first pixel circuit PC1 is located in the second display area A2. In this way, at least one first pixel circuit PC1 originally arranged in the first display area A1 is transferred to the second display area A2, and thus the position where the at least one first pixel circuit PC1 is originally arranged becomes the transparent area, increasing the area ratio of the transparent area in the first display area A1 and increasing the transmittance of the first display area A1.
In an embodiment, as shown in
In an embodiment, as shown in
In a direction perpendicular to the plane where the display panel is located, the first light-emitting elements L1 arranged at the outer periphery of the first aggregation area JJ partially overlap with the first aggregation area JJ corresponding to the first light-emitting elements L1 or the first light-emitting elements L1 arranged at the outer periphery of the first aggregation area JJ partially do not overlap with the first aggregation area JJ corresponding to the first light-emitting elements L1, which are not limited herein.
Since the first pixel circuits PC1 are not arranged in an area in addition to the first aggregation area JJ in the first display area A1, the diffraction caused by gaps existing in metal structures in the first pixel circuits PC1 does not exist in the corresponding area. Moreover, the first pixel circuits PC1 are arranged centrally in the first aggregation area JJ, that is, metal structures in the first pixel circuits PC1 are arranged compactly, so that the diffraction caused by gaps existing in metal structures in the first pixel circuits PC1 can also be improved.
In an embodiment, the display panel includes a substrate, a pixel circuit layer and a light blocking layer. The pixel circuit PC is located in the pixel circuit layer. The light blocking layer is located on a side of the pixel circuit layer facing away from the substrate. The light blocking layer includes multiple light blocking portions. An orthographic projection of the first aggregation area JJ on the plane where the display panel is located is within an orthographic projection of the light blocking portion on the plane where the display panel is located. In this way, the light blocking portion can block the pixel circuit PC and some metal wirings (such as the scan lines and the data lines) in the first aggregation area JJ to avoid the occurrence of the diffraction when the external light passes through the gaps between the metal structures or the metal wirings in the first pixel circuit PC1, facilitating improving the performance of the optical elements.
The material of the light blocking layer and the relative position relationship between the light blocking layer and other films in the display panel may be set according to practical situations, and are not limited herein. In an embodiment, the anode layer includes at least one first conductive layer and the second conductive layer. The material of the first conductive layer may include the ITO. The material of the second conductive layer may include the silver. The light blocking layer and the second conductive layer may be arranged in the same layer. In this way, one process can be saved, facilitating reducing the cost of the display panel.
In an embodiment, the light blocking portion is in the shape of a circle or an ellipse. In the case where a contour line of the light blocking portion includes a straight line edge (e.g., the light blocking portion is in the shape of a rectangle), the diffraction is likely to occur when the external light bypasses the light blocking portion and irradiates the optical elements. Therefore, the contour line of the light blocking portion is set to be a curved edge, the problem of the diffraction can be effectively improved, thereby improving the optical performance of the optical elements.
In an embodiment, as shown in
In the first aggregation area JJ, the first pixel circuits PC1 are regularly arranged in rows or columns, facilitating reducing the design difficulty of the mask required in the process of manufacturing the display panel and facilitating compactly arranging the first pixel circuits PC1 so that the area of the first aggregation area JJ can be reduced. In this way, when the light blocking layer is arranged, the area of the light blocking portion can be reduced, thereby increasing the transmittance of the first display area A1.
In an embodiment, as shown in
In an embodiment, as shown in
The first pixel circuit PC1 and the second pixel circuit PC2 located in the same row may be electrically connected to the same metal wire (such as the scan line) extending in the row direction X, do not need to be connected to two metal wires respectively, and do not need to be connected to the same metal wire through winding. In this way, the number of metal wires passing through the first display area A1 can be reduced or the length of the metal wires passing through the first display area A1 can be shortened, thereby increasing the transmittance of the first display area A1, and improving the optical performance of the optical elements.
In an embodiment, as shown in
In an embodiment, as shown in
The first pixel circuits PC1 and the second pixel circuits PC2 are arranged in staggered rows, facilitating flexibly arranging positions of the first pixel circuits PC1 so that the first pixel circuits PC1 are compactly arranged, and the first light-emitting elements L1 electrically connected to the first pixel circuits PC1 arranged in the first aggregation area JJ are facilitated being arranged at the outer periphery of the first aggregation area JJ.
The driving mode corresponding to the “one driving multiple” and the arrangement mode of the first pixel circuits PC1, especially the arrangement that the first pixel circuits PC1 are aggregated in the first aggregation area JJ, are applicable to any pixel arrangement and the pixel arrangement is described below in detail by way of examples, which are not intended to limit the present application.
Exemplarily,
The light-emitting color of the light-emitting element L11 of the first color, the light-emitting color of the light-emitting element L12 of the second color and the light-emitting color of the light-emitting element L13 of the third color can be set according to practical situations, and are not limited herein. In an embodiment, the light-emitting element L11 of the first color includes the red light-emitting element, the light-emitting element L12 of the second color includes the green light-emitting element, and the light-emitting element L13 of the third color includes the blue light-emitting element; or the light-emitting element L11 of the first color includes the green light-emitting element, the light-emitting element L12 of the second color includes the red light-emitting element, and the light-emitting element L13 of the third color includes the blue light-emitting element.
In an embodiment, in the same minimum repeating unit U, at least two first light-emitting elements L1 of at least one same color are electrically connected to the same first pixel circuit PC1. In other words, in the same minimum repeating unit U, there are first light-emitting elements L1 of n colors driven by the first pixel circuit PC1 in the manner of the “one driving multiple”, where n=1, 2 or 3. The larger n is, the smaller the number of first pixel circuits PC1, the better the transmittance of the first display area A1.
In an embodiment, referring to
In the first display area A1, the arrangement mode of the first light-emitting elements L1 is “x arrangement”. In the “x arrangement”, the red light-emitting element has the smallest area, and the green light-emitting element has a smaller area than the blue light-emitting element; in the row direction X, a spacing between the blue light-emitting element and the green light-emitting element is equal to a spacing between the blue light-emitting element and the red light-emitting element; and in the column direction Y, a spacing between two adjacent blue light-emitting elements is smaller than a spacing between the blue light-emitting element and the red light-emitting element that are adjacent to each other. The preceding spacing refers to a distance between edges of openings on a pixel definition layer.
The light-emitting element L13 of the third color in the second light-emitting element column U2 and the light-emitting element L13 of the third color in the fourth light-emitting element column U4 are arranged in a misaligned mode in the row direction X so that in the process of manufacturing the light-emitting element L13 of the third color, two light-emitting elements L13 of the third color closer to each other in the column direction Y can be vaporized through the same opening on the mask. In this way, the size of the opening can be increased and the manufacturing difficulty and the cost of the mask can be reduced.
In an embodiment, referring to
As shown in
In an embodiment, referring to
In the column direction, if two light-emitting elements L13 of the third color are arranged on one side and another side of one light-emitting element L13 of the third color separately, and a spacing between the one light-emitting element L13 of the third color and one of the two light-emitting elements L13 of the third color is different from a spacing between the one light-emitting element L13 of the third color and another one of the two light-emitting elements L13 of the third color. This light-emitting element L13 of the third color and the light-emitting element L13 of the third color having a smaller spacing from this light-emitting element L13 of the third color are electrically connected to the same first pixel circuit PC1. The spacing described here refers to the distance between edges of openings on the pixel definition layer. For example, as shown in
The two light-emitting elements L13 of the third color electrically connected to the same first pixel circuit PC1 are closer to each other so that the sawtooth is not prone to occur during the display, and the co-drive connection line W1 between the two light-emitting elements L13 of the third color can be shorter, facilitating reducing the loss on the co-drive connection line W1.
In an embodiment, referring to
Exemplarily,
When multiple first light-emitting elements L1 are driven by the same first pixel circuit PC1, this first pixel circuit PC1 may be directly connected to any one of the first light-emitting elements L1 driven by this first pixel circuit PC1 through an anode connection line. The manner of arranging the anode connection line may be the nearest connection. In this way, the anode connection line can be ensured to be shorter and the loss of the signal on the anode connection line can be reduced.
Three first pixel circuits PC1 carrying out a “one driving two” mode are aggregated in the first aggregation area JJ corresponding to the first repeating unit CF1, one first pixel circuit PC1 may be directly electrically connected to any one of two first light-emitting elements L1 driven by the first pixel circuit PC1, and the three first pixel circuits PC1 may be arranged at any position in the first aggregation area JJ. All of the first light-emitting elements L1 in the first repeating unit CF1 are arranged at the outer periphery of the first aggregation area JJ. The first aggregation area JJ is arranged inside the first repeating unit CF1, and may overlap with the partial area of the first light-emitting elements L1 close to the first aggregation area JJ (as shown in
The three first pixel circuits PC1 to which the first repeating unit CF1 is electrically connected are aggregated in the first aggregation area JJ, facilitating improving the diffraction caused by the structure of the first pixel circuits PC1, thereby facilitating reducing the diffraction degree of the first display area A1. Moreover, multiple first light-emitting elements L1 in the first repeating unit CF1 are arranged at the outer periphery of the first aggregation area JJ so that the multiple first light-emitting elements L1 in the first repeating unit CF1 are in the state of approximately surrounding the first aggregation area JJ, facilitating the electrical connection between the first pixel circuit PC1 and the first light-emitting element L1 directly electrically connected to the first pixel circuit PC1 through the anode connection line W2, and facilitating reducing the design difficulty of the anode connection line W2.
Exemplarily,
In the first display area A1, the arrangement mode of the first light-emitting elements L1 is “YYG arrangement”. The light-emitting color of the light-emitting element L11 of the first color, the light-emitting color of the light-emitting element L12 of the second color and the light-emitting color of the light-emitting element L13 of the third color may be set according to practical situations, and are not limited herein. In an embodiment, the light-emitting element L11 of the first color includes the red light-emitting element, the light-emitting element L12 of the second color includes the green light-emitting element, and the light-emitting element L13 of the third color includes the blue light-emitting element.
In an embodiment, in the same minimum repeating unit U, at least two first light-emitting elements L1 of at least one same color are electrically connected to the same first pixel circuit PC1. In other words, in the same minimum repeating unit U, there are first light-emitting elements L1 of n colors driven by the first pixel circuit PC1 in the manner of the “one driving multiple”, where n=1, 2 or 3. The larger n is, the smaller the number of first pixel circuits PC1 is, which is more conducive to improving the transmittance of the first display area A1.
In an embodiment, referring to
Exemplarily,
Three first pixel circuits PC1 carrying out a “one driving two” mode are aggregated in the first aggregation area JJ corresponding to the minimum repeating unit U, one first pixel circuit PC1 may be directly electrically connected to any one of two first light-emitting elements L1 driven by the first pixel circuit PC1, and the first pixel circuit PC1 may be arranged at any position in the first aggregation area JJ. All of the first light-emitting elements L1 in the minimum repeating unit U are arranged at the outer periphery of the first aggregation area JJ. The first aggregation area JJ is arranged inside the minimum repeating unit U, and may overlap with the partial area of at least part of the first light-emitting elements L1 close to the first aggregation area JJ (as shown in
The first pixel circuits PC1 to which the minimum repeating unit U is electrically connected are aggregated between the first light-emitting element column U1 and second light-emitting element column U2, facilitating improving the diffraction caused by the structure of the first pixel circuits PC1, thereby facilitating reducing the diffraction degree of the first display area A1. Moreover, multiple first light-emitting elements L1 in the minimum repeating unit U can be arranged on two sides of the aggregated first pixel circuits PC1, facilitating the electrical connection between the first pixel circuit PC1 and the first light-emitting element L1 directly electrically connected to the first pixel circuit PC1 through the anode connection line W2, and facilitating reducing the design difficulty of the anode connection line W2.
Exemplarily.
In the first display area A1, the arrangement mode of the first light-emitting elements L1 is “YYG-like arrangement”. The light-emitting color of the light-emitting element L11 of the first color, the light-emitting color of the light-emitting element L12 of the second color and the light-emitting color of the light-emitting element L13 of the third color may be set according to practical situations, and are not limited herein. In an embodiment, the light-emitting element L11 of the first color includes the red light-emitting element, the light-emitting element L12 of the second color includes the green light-emitting element, and the light-emitting element L13 of the third color includes the blue light-emitting element.
In an embodiment, in the same minimum repeating unit U, at least two first light-emitting elements L1 of at least one same color are electrically connected to the same first pixel circuit PC1. In other words, in the same minimum repeating unit U, there are first light-emitting elements L1 of n colors driven by the first pixel circuit PC1 in the manner of the “one driving multiple”, where n=1, 2 or 3. The larger n is, the smaller the number of first pixel circuits PC1 is, which is more conducive to improving the transmittance of the first display area A1. In an embodiment, the number of the light-emitting elements L12 of the second color connected to the same first pixel circuit PC1 may be two and these light-emitting elements L12 of the second color are two light-emitting elements L12 of the second color arranged close to each other.
In an embodiment, referring to
Exemplarily,
Two first pixel circuits PC1 carrying out the “one driving two” mode and one first pixel circuit PC1 carrying out the “one driving four” mode are aggregated in the first aggregation area JJ corresponding to the minimum repeating unit U. The first pixel circuit PC1 carrying out the “one driving two” mode may be directly electrically connected to any one of two first light-emitting elements L1 driven by the first pixel circuit PC1. Similarly, the first pixel circuit PC1 carrying out the “one driving four” mode may be directly electrically connected to any one of four light-emitting elements L12 of the second color driven by the first pixel circuit PC1. Moreover, the three first pixel circuits PC1 may be arranged at any position in the first aggregation area JJ. All of the first light-emitting elements L1 in the minimum repeating unit U are arranged at the outer periphery of the first aggregation area JJ. The first aggregation area JJ is arranged inside the minimum repeating unit U, and may overlap with the partial area of at least part of the first light-emitting elements L1 close to the first aggregation area JJ (as shown in
The first pixel circuits PC1 to which the minimum repeating unit U is electrically connected are aggregated between the first light-emitting element column U1 and second light-emitting element column U2, facilitating improving the diffraction caused by the structure of the first pixel circuits PC1, thereby facilitating reducing the diffraction degree of the first display area A1. Moreover, multiple first light-emitting elements L1 in the minimum repeating unit U can be arranged on two sides of the aggregated first pixel circuits PC1, facilitating the electrical connection between the first pixel circuit PC1 and the first light-emitting element L1 directly electrically connected to the first pixel circuit PC1 through the anode connection line W2, and facilitating reducing the design difficulty of the anode connection line W2.
Exemplarily,
The first virtual quadrangle U5 includes a parallelogram, a trapezoid, a rectangle, a square or the like. The second virtual quadrangle U6 includes a parallelogram, a trapezoid, a rectangle a square or the like.
In the first display area A1, the arrangement mode of the first light-emitting elements L1 is “diamond arrangement”. The light-emitting color of the light-emitting element L11 of the first color, the light-emitting color of the light-emitting element L12 of the second color and the light-emitting color of the light-emitting element L13 of the third color may be set according to practical situations, and are not limited herein. In an embodiment, the light-emitting element L11 of the first color includes the red light-emitting element, the light-emitting element L12 of the second color includes the green light-emitting element, and the light-emitting element L13 of the third color includes the blue light-emitting element; or the light-emitting element L11 of the first color includes the blue light-emitting element, the light-emitting element L12 of the second color includes the green light-emitting element, and the light-emitting element L13 of the third color includes the red light-emitting element.
In an embodiment, in the same minimum repeating unit U, at least two first light-emitting elements L1 of at least one same color are electrically connected to the same first pixel circuit PC1. In other words, in the same minimum repeating unit U, there are first light-emitting elements L1 of n colors driven by the first pixel circuit PC1 in the manner of the “one driving multiple”, where n=1, 2 or 3. The larger n is, the larger the number of first light-emitting elements L1 connected to the same first pixel circuit PC1 is, and the smaller the number of first pixel circuits PC1 is, which is more conducive to improving the transmittance of the first display area A1.
In an embodiment, referring to
Exemplarily,
Two first pixel circuits PC1 carrying out the “one driving two” mode and one first pixel circuit PC1 carrying out the “one driving four” mode are aggregated in the first aggregation area JJ corresponding to the minimum repeating unit U. The two first pixel circuit PC1 carrying out the “one driving two” mode may be directly electrically connected to any one of two first light-emitting elements L1 driven by the first pixel circuit PC1. Similarly, the first pixel circuit PC1 carrying out the “one driving four” mode may be directly electrically connected to any one of four light-emitting elements L12 of the second color driven by the first pixel circuit PC1. Moreover, the three first pixel circuits PC1 may be arranged at any position in the first aggregation area JJ. In the minimum repeating unit U, the light-emitting element L11 of the first color and the light-emitting element L13 of the third color are arranged at the outer periphery of the first aggregation area JJ, the first aggregation area JJ overlaps with the light-emitting element L12 of the second color inside the first virtual quadrangle U5, and the first aggregation area JJ may overlap with the partial area of at least part of the light-emitting element L11 of the first color close to the first aggregation area JJ, and/or may overlap with the partial area of at least part of the light-emitting element L12 of the second color close to the first aggregation area JJ (as shown in
The three first pixel circuits PC1 to which the minimum repeating unit U is electrically connected are aggregated in the first aggregation area JJ, facilitating improving the diffraction caused by the structure of the first pixel circuits PC1, thereby facilitating reducing the diffraction degree of the first display area A1. Moreover, multiple first light-emitting elements L1 in the minimum repeating unit U are arranged at the outer periphery of the first aggregation area JJ, the light-emitting elements L11 of the first color and the light-emitting elements L13 of the third color in the minimum repeating unit U are in the state of approximately surrounding the first aggregation area JJ, and one light-emitting element L13 of the third color overlaps with the first aggregation area JJ, facilitating the electrical connection between the first pixel circuit PC1 and the first light-emitting element L1 directly electrically connected to the first pixel circuit PC1 through the anode connection line W2, and facilitating reducing the design difficulty of the anode connection line W2.
Exemplarily,
In the first display area A1, the arrangement manner of the first light-emitting elements L1 is “Real arrangement”. Light-emitting colors of the light-emitting element L11 of the first color, the light-emitting element L12 of the second color and the light-emitting element L13 of the third color may be set according to practical situations, and are not limited herein. In an embodiment, the light-emitting element L11 of the first color is one of the red light-emitting element, the green light-emitting element or the blue light-emitting element; the light-emitting element L12 of the second color is one of the red light-emitting element, the green light-emitting element or the blue light-emitting element; and the light-emitting element L13 of the third color is one of the red light-emitting element, the green light-emitting element or the blue light-emitting element.
In an embodiment, referring to
Exemplarily,
Referring to
The three first pixel circuits PC1 to which the second repeating unit CF2 is electrically connected are aggregated in the first aggregation area JJ, facilitating improving the diffraction caused by the structure of the first pixel circuits PC1, thereby facilitating reducing the diffraction degree of the first display area A1. Moreover, multiple first light-emitting elements L1 in the second repeating unit CF2 are arranged at the outer periphery of the first aggregation area JJ so that the peripheral first light-emitting element L1 in the second repeating unit CF2 are in the state of approximately surrounding the first aggregation area JJ, facilitating the electrical connection between the first pixel circuit PC1 and the first light-emitting element L1 directly electrically connected to the first pixel circuit PC1 through the anode connection line W2, and reducing the design difficulty of the anode connection line W2.
In
The first pixel circuit PC1 in the first aggregation area JJ and the scan line SCAN are connected in various modes. In an embodiment, as shown in
The number of scan lines SCAN electrically connected to the pixel circuit row PCH is related to the structure of the first pixel circuit PC1. Exemplarily, in combination with
The different pixel circuit line PCH is electrically connected to different three scan lines SCAN so that back and forth winding of the scan lines SCAN can be avoided and the design difficulty of the scanning line SCAN can be reduced.
In an embodiment, as shown in
The electrical connection described here includes the electrical connection through the anode connection wire W2, the electrical connection through the co-drive connection wire W1, the electrical connection through coupling and the like.
Such configuration mode is applicable to any pixel arrangement in which the three first pixel circuits PC1 in the same first aggregation area JJ are arranged in two rows. Exemplarily,
In an embodiment, an orthographic projection of at least one first pixel circuit PC1 on a plane where the display panel is located at least partially overlap with an orthographic projection of at least one first light-emitting element L1 electrically connected to the at least one first pixel circuit PC1 on the plane where the display panel is located.
Here, the first light-emitting element L1 electrically connected to the first pixel circuit PC1 refers to the first light-emitting element L1 directly connected to the first pixel circuit PC1, and excludes the first light-emitting element L1 indirectly electrically connected to the first pixel circuit PC1 through the co-drive connection line W1 or another first light-emitting element.
The position where the first light-emitting element L1 is located and the position where the first pixel circuit PC1 is located have low transmittance. The orthographic projection of the at least one first pixel circuit PC1 on the plane where the display panel is located at least partially overlap with the orthographic projection of at least one first light-emitting element L1 electrically connected to the at least one first pixel circuit PC1 on the plane where the display panel is located so that the sum of the area occupied by the first light-emitting element L1 and the area occupied by the first pixel circuit PC1 can be reduced, facilitating increasing the ratio of the transparent area in the first display area A1, and further improving the performance of the optical elements.
Such configuration mode is applicable to any pixel arrangement which is described below in detail by way of examples but is not intended to limit the present application. Exemplarily,
In an embodiment, referring to
In an embodiment, an orthographic projection of at least one first pixel circuit PC1 on a plane where the display panel is located does not overlap with an orthographic projection of the first light-emitting elements L1 electrically connected to the at least one first pixel circuit PC1 on the plane where the display panel is located.
The light-emitting element electrically connected to the first pixel circuit PC1 described here refers to the first light-emitting element L1 directly connected to the first pixel circuit PC1, and excludes the first light-emitting element L1 indirectly electrically connected to the first pixel circuit PC1 through the co-drive connection line W1 or another first light-emitting element.
Such configuration mode is applicable to any pixel arrangement that is described below in detail by way of examples but is not intended to limit the present application.
In an embodiment, as shown in
The length of the anode connection line W2 described here refers to the minimum distance from the via for electrically connecting the first light-emitting element L1 with the first pixel circuit PC1 to the light-emitting element.
The material of a film where the anode connection line W2 is located and the relative position relationship between the film where the anode connection line W2 is located and other films in the display panel may be set according to practical situations, and are not limited herein. In an embodiment, the anode layer includes at least one first conductive layer and the second conductive layer. The material of the first conductive layer includes an ITO. The material of the second conductive layer includes a silver. The anode connection line W2 may be located in one of the at least one first conductive layer. In this way, one process can be saved, facilitating reducing the cost of the display panel. Moreover, the ITO is transparent, and the anode connection line W2 is arranged in one of the at least one first conductive layer so that the anode connection line W2 can be avoided from blocking the light, facilitating improving the transmittance of the first display area A1, and further improving the optical performance of the optical elements.
The line type of the anode connection line W2 may also be set according to practical situations, which is not limited herein. In an embodiment, the anode connection line W2 may include a straight line, and may also include a curve. In the case where the anode connection line W2 includes the curve, the diffraction degree when the external light bypasses the anode connection line W2 can be effectively reduced, thereby reducing the impact of diffraction phenomenon on the optical performance of the optical elements.
With such configuration, the length of the anode connection line W2 of the green light-emitting element can be greater than the length of the anode connection line W2 of the blue light-emitting element. The green light-emitting element has a longer life than the blue light-emitting element. The length of the anode connection line W2 of the green light-emitting element is increased and the length of the anode connection line of the blue light-emitting element can be shortened so that the signal delay of the blue light-emitting element can be reduced, increasing the light-emitting effect.
In an embodiment, the third display area A3 further includes third light-emitting elements L3 and third pixel circuits PC3. The third pixel circuit PC3 is configured to drive the third light-emitting elements L3 to emit light. The third pixel circuit PC3 and the first pixel circuit PC1 may have the same or different implementation modes, and are not limited herein.
The at least one first pixel circuit PC1 is moved to the third display area A3 so that the number of first pixel circuits PC1 arranged in the first display area A1 can be reduced, facilitating increasing the transmittance of the first display area A1, thereby facilitating improving the performance of the optical elements.
In an embodiment, the second display area A2 includes second light-emitting elements L2 of at least three different colors. The second pixel circuit PC2 is configured to drive the second light-emitting elements L2 to emit the light. The density of first light-emitting elements L1 in the first display area A1 is less than or equal to the density of second light-emitting elements L2 in the second display area A2.
Exemplarily,
The density of the first light-emitting elements L1 in the first display area A1 is equal to the density of the second light-emitting elements L2 in the second display area A2 so that the first display area A1 and the second display area A2 have the same display brightness. The current density of the first light-emitting element L1 is equal to the current density of the second light-emitting element L2 so that the aging speed of the first light-emitting element L1 is close to the aging speed of the second light-emitting element L2, avoiding the occurrence of split screen caused by different aging speeds of the first light-emitting element L1 and the light-emitting element L2.
Exemplarily,
On the basis that the density of the first light-emitting elements L1 in the first display area A1 is less than the density of the second light-emitting elements L2 in the second display area A2, the first pixel circuits PC1 may be arranged in the first display area A1 (i.e., built in), as shown in
The density of the first light-emitting elements L1 in the first display area A1 is less than the density of the second light-emitting elements L2 in the second display area A2 so that the transmittance of the first display area A1 can be increased, thereby improving the performance of the optical elements.
In an embodiment,
If not in collision, the structures of the display panel shown in the preceding multiple drawings may be combined or replaced with each other, and are not limited in the embodiments of the present application.
Based on the preceding concept, embodiments of the present application further provide a display device. The display device includes the display panel described in any embodiment of the present application. Therefore, the display device provided in embodiments of the present application also has the effects described in the preceding embodiments, and will not be repeated herein.
Exemplarily,
Exemplarily,
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110460556.9 | Apr 2021 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/103123 | 6/29/2021 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2022/227260 | 11/3/2022 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 20200394959 | Lou et al. | Dec 2020 | A1 |
| 20210327972 | Lou | Oct 2021 | A1 |
| Number | Date | Country |
|---|---|---|
| 110310576 | Oct 2019 | CN |
| 110580873 | Dec 2019 | CN |
| 110767682 | Feb 2020 | CN |
| 110767720 | Feb 2020 | CN |
| 110890026 | Mar 2020 | CN |
| 210245501 | Apr 2020 | CN |
| 112038373 | Dec 2020 | CN |
| 112071887 | Dec 2020 | CN |
| 112072000 | Dec 2020 | CN |
| 112634809 | Apr 2021 | CN |
| 2011191473 | Sep 2011 | JP |
| Entry |
|---|
| International Search Report for PCT/CN2021/103123, dated Dec. 1, 2021 (nine (9) pages). |
| Number | Date | Country | |
|---|---|---|---|
| 20240062720 A1 | Feb 2024 | US |
