Patent Application
20250241180
This disclosure relates to the field of display technology, and specifically, to a display panel and a display device.
Organic Light Emitting Display (OLED) has many advantages such as self-illumination, high brightness, wide viewing angle, short response time, high definition and contrast, can be produced with R, G, and B full-color components, and has gradually become the display device of choice. However, with the continuous development of science and technology, people's purposeful demand for OLED display devices is also gradually increasing.
This disclosure is directed to overcome the above-mentioned shortcomings of the related art and provide a display panel and a display device.
According to one aspect of this disclosure, a display panel is provided and has a display area and a non-display area, where a cutting channel is provided in the non-display area, and the display panel includes:
In some embodiments of this disclosure, a difference between the first distance and the second distance is greater than or equal to 30 microns.
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, the first distance is substantially equal to a distance between an edge line, close to the cutting channel, of the display area and the cutting channel, and the second optical functional layer extend to an edge of the cutting channel close to the display area.
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, the first optical functional layer includes a plurality of covering parts, with each covering part covers one touch lead.
In some embodiments of this disclosure, the non-display area includes a bonding area, a bonding pin is provided in the bonding area, the touch lead is connected to the bonding pin, and, in a side of the non-display area close to the bonding area, the first optical functional layer only covers the touch lead.
In some embodiments of this disclosure, the refractive index of the second optical function layer is greater than the refractive index of the first optical function layer, the optical pattern is a recessed part, and at least part of the second optical function layer is located within the recessed part.
In some embodiments of this disclosure, the first optical functional layer and the second optical functional layer are both made from organic insulation materials, and a thickness of the second optical functional layer is greater than a thickness of the first optical functional layer.
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, the touch layer group includes:
In some embodiments of this disclosure, the non-display area includes a bending area, and the display panel further includes:
In some embodiments of this disclosure, an edge line of the bending area close to the display area is a first edge line, the first optical functional layer and the second optical functional layer both extend into the bending area, a non-zero third distance is provided between an edge line, close to the first edge line, of the first optical function layer and the first edge line, a non-zero fourth distance is provided between an edge line, close to the first edge line, of the second optical function layer and the first edge line, and the fourth distance is greater than the third distance.
In some embodiments of this disclosure, an edge line of the bending area close to the display area is a first edge line, the first optical functional layer and the second optical functional layer both extend into a side of the bending area close to the display area, a non-zero third distance is provided between an edge line, close to the first edge line, of the first optical function layer and the first edge line, a non-zero fourth distance is provided between an edge line, close to the first edge line, of the second optical function layer and the first edge line, and the third distance is greater than the fourth distance.
In some embodiments of this disclosure, an absolute value of a difference between the fourth distance and the third distance is greater than or equal to 5 microns.
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, an absolute value of a difference between the sixth distance and the fifth distance is greater than or equal to 5 microns.
In some embodiments of this disclosure, an orthographic projection of an edge line of the first optical functional layer on the base substrate is configured as a curve, and an orthographic projection of an edge line of the second optical functional layer on the base substrate is configured as a curve.
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, the display panel further includes:
In some embodiments of this disclosure, the reflective layer includes:
In some embodiments of this disclosure, the first lead includes a gate line and/or a data line and/or a power line.
In some embodiments of this disclosure, the display area of the display panel is provided with a light-transmitting part, and the shielding layer further includes:
In some embodiments of this disclosure, the display panel further includes: a color film layer, provided on a side of the second optical functional layer away from the base substrate, or on a side of the first optical functional layer close to the base substrate; where the color film layer includes a plurality of filter parts arranged opposite to sub-pixels.
According to another aspect of this disclosure, a display device is provided and includes the display panel according to any embodiment(s) as described above.
It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit this disclosure.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. Apparently, the drawings in the following description are only some embodiments of this disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.
Explanation of reference symbols in the display panel of this disclosure are given as follows:
Exemplary embodiments will now be described more fully with reference to the accompanying drawings. Exemplary embodiments may, however, be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings indicate the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the drawings are merely schematic illustrations of this disclosure and are not necessarily drawn to scale.
Although relative terms, such as “upper” and “lower” are used in this specification to describe the relative relationship of one component as illustrated to another, these terms are used in this specification only for convenience, for example, according to direction of the example described with reference to the drawings. It will be understood that if the illustrated device were turned upside down, components described as “on/above” would become components as “under/below”. When a structure is “on/above” another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is “directly” placed on the other structure, or that the structure is “indirectly” placed on the other structure through another structure.
The terms “a”, “an”, “the”, “said” and “at least one” are used to indicate the presence of one or more elements/components/etc. The terms “include” and “have” are used to indicate an open-ended inclusion and mean that there may be additional elements/components/etc. in addition to those listed. The terms “first”, “second”, “third” and the like are only used as a marker, not a limit on the number of its objects.
In this application, unless otherwise clearly stated and limited, the term “connection” should be understood in a broad sense. For example, “connection” may be a fixed connection, a detachable connection, or an integral body. It may be a direct connection or an indirect connection through intermediaries. The term “and/or” is just an association relationship that describes related objects, which means that there may be three relationships. For example, A and/or B may include three situations: A alone exists, both A and B exist, and B alone exists. In addition, the character “/” in this disclosure generally indicates that the related objects are in an “or” relationship.
Exemplary embodiments of this disclosure provide a display panel 100. Referring to
In the display panel 100 of this disclosure, on the one hand, the non-zero first distance is provided between the edge line of the first optical functional layer 71 close to the cutting channel 14 and the cutting channel 14, and the non-zero second distance is provided between the edge line of the second optical functional layer 72 close to the cutting channel 14 and the cutting channel 14. In other words, the first optical functional layer 71 and the second optical functional layer 72 are not provided at the cutting channel 14, so that no carbon ash will be generated during the cutting process, thereby avoiding a connection between two adjacent conductive wires of the display panel 100 and, thus, preventing poor display. On the other hand, the second optical functional layer 72 covers the optical pattern 711 of the first optical functional layer 71 and extends to the side of the base substrate 1 close to the cutting channel 14. In the part close to the cutting channel 14, the second optical functional layer 72 protrudes from the first optical functional layer 71, and there is only one layer of second optical functional layer 72, so the step difference of the second optical functional layer 72 is small, and bubbles are less likely to appear after the protective film is attached. Furthermore, the first optical functional layer 71 in the display area AA has the optical pattern 711, the second optical functional layer 72 covers the optical pattern 711 of the first optical functional layer 71, and the first optical functional layer 71 and the second optical functional layer 72 have different refractive indexes, so the front light extraction efficiency of the display panel 100 can be adjusted through the first optical functional layer 71 and the second optical functional layer 72.
Referring to
Referring to
The side area CB may include a first side area CB1, a second side area CB2, a third side area CB3, and a fourth side area CB4. The first side area CB1 and the second side area CB2 are provided on opposite sides of the display area AA in the first direction X. The third side area CB3 and the fourth side area CB4 are provided on opposite sides of the display area AA in the second direction Y. The bonding area BOD is provided on the side of the fourth side area CB4 away from the display area AA. Specifically, the bending area BEND is connected to the fourth side area CB4, and the bonding area BOD is connected to the bending area BEND. That is, the bending area BEND is connected between the bonding area BOD and the fourth side area CB4.
Referring to
Referring to
Referring to
The touch driver chip 12 may include an integrated circuit that drives the touch layer group 5, and the touch driver chip 12 may also include an integrated circuit that receives a touch signal. In some embodiments, the integrated circuit may include a touch driving integrated circuit that generates and provides a touch driving signal, and a touch sensing integrated circuit that receives the touch signal, but the invention is not limited thereto. The touch driver chip 12 is connected to the bonding pin 15 of the display panel 100 to provide a touch driving signal to the bonding pin 15 and receive a touch sensing signal fed back by the touch layer group 5.
The display panel 100 may include the base substrate 1 and the display substrate 10. The display substrate 10 may be an OLED (Organic Electroluminescence Display) display substrate, a QLED (Quantum Dot Light Emitting Diodes) display substrate, and the like. The display substrate 10 has a light-emitting side and a non-light-emitting side. The light-emitting side and the non-light-emitting side are opposite to each other. Image can be displayed on the light-emitting side. The side on which the image is displayed is the display surface.
The following takes the OLED display substrate as an example for description.
Referring to
Referring to
The material of the base substrate 1 may include inorganic material. For example, the inorganic material may be glass, quartz or metal. The material of the base substrate 1 may also include organic material. For example, the organic material may be resin material such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate, and polyethylene naphthalate. The base substrate 1 may be formed of multiple material layers. For example, the base substrate 1 may include multiple base material layers, and the material of the base material layer may be any of the above-mentioned materials. Alternatively, the base substrate 1 may also be provided as a single layer, and may be made of any of the above materials.
Referring to
A buffer layer 22 may also be formed on the side of the light-shielding layer 21 away from the base substrate 1. The buffer layer 22 plays a role in blocking water vapor and impurity ions in the base substrate 1 (especially in organic materials), and increasing hydrogen ions for the active layer subsequently formed. The buffer layer 22 is made from an insulation material, which can insulate and isolate the light-shielding layer 21 from the active layer. The buffer layer 22 may include silicon nitride, silicon oxide, or silicon oxynitride. Depending on the type or process condition of base substrate 1, the buffer layer 22 may be omitted.
The active layer is provided on the side of the buffer layer 22 away from the base substrate 1. The active layer may include a channel part 231 and conductor parts disposed at both ends of the channel part 231. One of the two conductor parts is a source connection part 232, and the other is the drain connection part 233. A gate insulation layer 24 is provided on the side of the active layer away from the base substrate 1, and a gate layer is provided on the side of the gate insulation layer 24 away from the base substrate 1. The gate layer may include a gate electrode 25 and a gate line (not shown in the drawings).
An interlayer dielectric layer 26 is provided on the side of the gate layer away from the base substrate 1, and a via hole is provided on the interlayer dielectric layer 26. The via hole is connected to the source connection part 232 and the drain connection part 233. A first connection conductor layer 27 is provided on the side of the interlayer dielectric layer 26 away from the substrate 1. The first connection conductor layer 27 may include a source electrode 271, a drain electrode 272 and a data line (not shown in the drawings), where the data line may be connected to the source electrode 271, or a part of the data line may serve as the source electrode 271. The source electrode 271 is connected to the source electrode connection part 232 through the via hole on the interlayer dielectric layer 26, and the drain electrode 272 is connected to drain connection part 233 through the via hole on the interlayer dielectric layer 26.
In some other embodiments of this disclosure, a passivation layer is provided on the side of the first connection conductor layer 27 away from the substrate 1, and a via hole is also provided on the passivation layer. A second connection conductor layer is provided on one side of the substrate 1. The second connection conductor layer may include a second source electrode and/or a second drain electrode. The second source electrode and the second drain electrode are correspondingly connected to the source electrode and drain electrode, respectively, through the via hole on the passivation layer. Also, a third connection conductor layer, a fourth connection conductor layer, and the like may also be provided as needed.
Still referring to
It should be noted that the thin film transistor described in this specification is a top gate thin film transistor. In some other embodiments of this disclosure, the thin film transistor may also be a bottom gate type or a double gate type, and the specific structure thereof is not specified here. Furthermore, when thin film transistors with opposite polarities are used or when the current direction changes during circuit operation, the functions of the “source electrode 271” and the “drain electrode 272” may be interchanged with each other. Therefore, in this specification, “source electrode 271” and “drain electrode 272” may be interchanged with each other.
Still referring to
Specifically, a first electrode 31 layer is provided on a side of the planarization layer 28 away from the base substrate 1. The first electrode 31 layer may include a first electrode 31 and a first lead 171. The first electrode 31 is provided in the display area AA, the first lead 171 is provided in the non-display area NA, the first lead 171 is spaced apart from the first electrode 31, and the first electrode 31 is connected to the drain electrode 272 of the driving backplane 2 through the via hole. The first electrode 31 is provided with the driving signal through the drain electrode 272, and the first electrode 31 may be an anode (pixel electrode).
A pixel definition layer 32 is provided on a side of the first electrode 31 away from the base substrate 1. An opening is provided on the pixel definition layer 32, and the opening is connected to the first electrode 31, so that at least part of the first electrode 31 is not covered by the pixel definition layer 32.
A light-emitting layer group 33 is provided on a side of the pixel definition layer 32 away from the base substrate 1, and at least part of the light-emitting layer group 33 is located in the opening. A second electrode 34 is provided on a side of the light-emitting layer group 33 away from the base substrate 1. The second electrode 34 may be a cathode (common electrode). The light-emitting layer group 33 in an opening emits light to form a sub-pixel 35, so that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 in the opening on the substrate 1. The display substrate 10 may include a plurality of sub-pixels 35.
The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer and an electron injection layer that are stacked in sequence. The hole injection layer is in contact with the first electrode 31 and the electron injection layer is in contact with the second electrode 34. Alternatively, in some other embodiments of this disclosure, the light-emitting layer group 33 may only include a hole transport layer, a light-emitting layer and an electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure may be provided as needed.
Holes are injected into the organic light-emitting layer from the side of the first electrode 31, and electrons are injected into the organic light-emitting layer from the side of the second electrode 34. Finally, the holes and electrons recombine in the organic light-emitting layer to generate excitons. When the generated excitons relax from the excited state to the ground state, the OLED emits visible light.
The above is the exemplary structure of the display substrate 10 in the display area AA. In the non-display area NA, the data lines, gate lines and first leads 171 extend to the non-display area NA and are finally connected to the bonding pins 15 in the bonding area B OD.
An encapsulation layer group 4 is provided on the side of the second electrode 34 away from the base substrate 1. Referring to
In some embodiments, referring to
Referring to
Referring to
Referring to
In some embodiments, as shown in
For example, referring to
Since the driving backplane 22 needs to be connected to electrical signals, the first touch electrode 6111, the second touch electrode 6121 and the second connection part 6122 also need to be connected to electrical signals. The first touch electrode 6111, the second touch electrode 6121 and the second connection part 6122 are further away from the driving backplane 22 relative to the first touch layer 51, thereby reducing the electric signal interference between the driving backplane 22 and each of the first touch electrode 6111, the second touch electrode 6121 and the second connection part 6122, and ensuring the display effect and touch effect of the display panel 100. Alternatively, in some other embodiments of this disclosure, the first touch layer 51 may also include the first touch electrode 6111, the second touch electrode 6121 and the second connection part 6122, and the second touch layer 53 may also include the first connection part 6112.
In some other embodiments, the first touch electrode 6111, the first connection part 6112 and the second touch electrode 6121 are arranged in the same layer and can be formed through a single patterning process. The first touch electrode 6111 and the first connection part 6112 are formed in an integral structure, the second connection part 6122 may be provided on the bridge layer to form a bridge structure, and an insulation layer is provided between the first connection part 6112 and the second connection part 6122.
For example, the second touch layer 53 may include the first touch electrode 6111, the second touch electrode 6121, and the first connection part 6112. The first touch electrode 6111 and the first connection part 6112 are connected into one piece within the second touch layer 53. Furthermore, a gap is provided between the second touch electrode 6121 and both the first touch electrode 6111 and the first connection part 6112, and the gap is achieved by disconnection of the metal grid. The first touch layer 51 may include the second connection part 6122, which is connected to two adjacent second touch electrodes 6121 through fourth via holes provided on the touch insulation layer 52, so as to connect the plurality of second touch electrodes 6121 arranged sequentially along the first direction X into one piece. Alternatively, in some other embodiments of this disclosure, the first touch layer 51 may also include the first touch electrode 6111, the second touch electrode 6121 and the first connection part 6112, and the second touch layer 53 may also include the second connection part 6122.
In some embodiments, the first touch electrode 6111 and the second touch electrode 6121 may have a rhombus shape, for example, a regular rhombus shape, a transverse rhombus shape (longer in the transverse direction), or a longitudinal rhombus shape (longer in the longitudinal direction). In some embodiments, the first touch electrode 6111 and the second touch electrode 6121 may have any one or more of triangles, squares, trapezoids, parallelograms, pentagons, hexagons and other polygons, which are not limited in this disclosure.
In the side area CB, a touch lead 62 is provided. The touch lead 62 may include a first touch sub-lead, or a second touch sub-lead, or a first touch sub-lead and a second touch sub-lead that are stacked and connected. In other words, the touch lead 62 may be a single-layer structure including only the first touch sub-lead or the second touch sub-lead. The touch lead 62 may also include a stacked double-layer structure of the first touch sub-lead and the second touch sub-lead, in which the first touch sub-lead and the second touch sub-lead are connected. The first touch layer may include the first touch sub-lead, that is, the first touch sub-lead is disposed on the first touch layer; the second touch layer may include the second touch sub-lead, that is, the second touch sub-lead is disposed on the second touch layer.
Referring to
First ends of a part of the first touch leads 621 are respectively connected to one end of the first touch unit 611, and second ends of these first touch leads 621 are led out to the bonding pins 15 and connected to the bonding pins 15. First ends of another part of the first touch leads 621 are respectively connected to the opposite end of the first touch unit 611, and second ends of the another part of the first touch lead 621 are led to the bonding pins 15 and connected to the bonding pins 15.
In some embodiments, when touch control can be achieved by fingers, the first touch electrode 6111 may be a driving electrode, and the second touch electrode 6121 may be a sensing electrode. Alternatively, the first touch electrode 6111 may be a sensing electrode, and the second touch electrode 6121 may be a driving electrode. A plurality of first touch units 611 and a plurality of second touch units 612 constitute (M rows of driving electrodes*N columns of sensing electrodes). In other words, M first touch units 611 and N second touch units 612 are included, where M and N are positive integers greater than two.
Referring to
It can be understood that the first touch electrodes 6111 in the same row are arranged sequentially along the second direction Y (the length direction of the display area AA). The number of first touch electrodes 6111 included in a row of first touch units 611 is relatively large. The touch signal starts from the first touch electrode 6111 coupled to the first touch lead 621 and is transmitted sequentially, in a direction away from the first touch lead 621, along a row of first touch electrodes 6111. However, as the transmission distance increases, the touch signal will gradually attenuate. In view of this, when the number of first touch electrodes 6111 is large, both ends of the same row of first touch electrodes 6111 are coupled to the first touch lead 621 respectively, thereby ensuring that the touch signal received by the first touch electrode 6111, which is farthest from the first touch lead 621 in a row of first touch electrodes 6111, is not attenuated and, thus ensuring that the touch signals on multiple first touch electrodes 6111 in a row are basically the same, so touch noise can be reduced.
In some other embodiments, the first touch lead 621 may also have only one connection mode, that is, only one end of the first touch unit 611 is connected to the first touch lead 621. This wiring mode is called 1T1R.
Alternatively, in some other embodiments of this disclosure, the second touch leads 622 may be configured in two parts. The first ends of one part of the second touch leads 622 are connected correspondingly to one ends of the second touch units 612, and the second ends of these second touch leads 622 are led out to the bonding pin 15 and connected with the bonding pin 15. The first ends of another part of the second touch leads 622 are connected to the opposite ends of the second touch units 612, and the second ends of the another part of the second touch leads 622 are led out to the bonding pin 15 and connected with the bonding pin 15.
This wiring mode can also be called 2T2R, which can ensure that, among a row of touch electrodes coupled to the touch leads, the touch signals received by the touch electrodes that are relatively farther away from the touch leads 62 are almost the same as that received by the touch electrodes that are relatively closer to the touch leads 62, thereby ensuring the touch accuracy of a relatively large touch screen.
Referring to
In the display area AA, the first optical function layer 71 has an optical pattern 711. Specifically, a plurality of recessed parts may be provided on the side of the first optical function layer 71 away from the base substrate 1, that is, the optical pattern 711 may include a plurality of recessed parts. The recessed part may include side walls and a bottom wall, where the bottom wall is parallel to the display surface, and the side walls intersect the display surface. There is a one-to-one correspondence between the recessed parts and the sub-pixels 35. Specifically, the number of the recessed parts is the same as the number of the sub-pixels 35, and the shape of the recessed parts is the same as the shape of the sub-pixels 35. For example, when the sub-pixels 35 are formed in a circular shape, the recessed parts are also formed to be circular; when the sub-pixels 35 are formed to be rectangular, the recessed parts are also formed to be rectangular. Alternatively, in some other embodiments of this disclosure, the shape of the sub-pixels 35 and the shape of the recessed parts may also be other shapes, which will not be elaborated here.
As shown in
Referring to
The second optical functional layer 72 is disposed on the side of the first optical functional layer 71 away from the base substrate 1. At least part of the second optical functional layer 72 is disposed in the recessed part. The refractive index of the second optical functional layer 72 is the different from that of the first optical functional layer 71. For example, the refractive index of the second optical functional layer 72 may be greater than the refractive index of the first optical functional layer 71. In this way, a total reflection is prone to occur at the interface between the second optical functional layer 72 and the side walls of the recessed part. The side walls of the recessed part will cause total reflection of the inclined outgoing light to form total reflected light and change the angle of the outgoing light, so that the total reflected light is more concentrated and emitted from the front of the display panel 100, thereby improving the light extraction efficiency at the front of the display panel 100, reducing the light extraction efficiency at the side surface of the display panel 100, and increasing the anti-peeping effect.
Alternatively, the refractive index of the second optical functional layer 72 may be smaller than the refractive index of the first optical functional layer 71, so refraction may occur at the interface between the second optical functional layer 72 and the side walls of the recessed part, and the refraction angle is smaller than the incident angle. In this way, the angle of the outgoing light is also changed, so that the total reflected light is relatively concentrated and emitted from the front of the display panel 100, thereby improving the light extraction efficiency at the front of the display panel 100, reducing the light extraction efficiency at the side surface of the display panel 100, and increasing the anti-peeping effect.
The thickness of the second optical functional layer 72 is greater than the thickness of the first optical functional layer 71. The thickness of the second optical functional layer 72 is greater than or equal to 3 microns and less than or equal to 5 microns. For example, the thickness of the second optical functional layer 72 may be 3.2 microns, 3.5 microns, 3.8 microns, 4.15 microns, 4.56 microns, 4.88 microns, etc. The thickness of the first optical functional layer 71 is greater than or equal to 1.5 microns and less than or equal to 2.5 microns. For example, the thickness of the first optical functional layer 71 may be 1.7 microns, 1.9 microns, 2.1 microns, 2.25 microns, 2.45 microns, etc.
During the preparation process of the display panel 100, multiple display panels 100 may be prepared on a larger motherboard, and then multiple display panels 100 may be formed through cutting along the cutting channel 14. The materials of the first optical functional layer 71 and the second optical functional layer 72 are both organic insulation material(s). Carbon ash may easily be generated during cutting process of the organic insulation material, which may lead to connection of two adjacent wires of the display panels 100, thereby resulting in poor display. Therefore, the first optical functional layer 71 and the second optical functional layer 72 are not provided at the cutting channel 14. However, if the first optical functional layer 71 and the second optical functional layer 72 are not provided, bubbles may easily be generated by the protective film at the cutting channel 14 after the protective film is attached during the preparation process.
The inventor found that the main reason, why bubbles are easily generated by the protective film at the cutting channel 14, lies in that the step difference formed by the stacking of the first optical functional layer 71 and the second optical functional layer 72 is relatively large. For example, the step difference can reach 5.6 microns, making bubbles likely occur at the cutting channel 14 after applying the protective film.
In some embodiments, as shown in
The second optical functional layer 72 covers the optical pattern 711 of the first optical functional layer 71 and extends to the side of the substrate 1 close to the cutting channel 14. Specifically, the second optical functional layer 72 covers the first optical functional layer 71 in the display area AA, and the second optical functional layer 72 is also disposed in the recessed part of the first optical functional layer 71. In the non-display area NA, the second optical functional layer 72 covers the sidewall of the first optical functional layer 71 and extends to the base substrate 1, and a non-zero second distance D2 is provided between the edge line of the second optical function layer 72 close to the cutting channel 14 and the cutting channel 14, that is, the second optical function layer 72 does not extend from the display area AA to the cutting channel 14, and the second optical functional layer 72 is spaced apart from the cutting channel 14. The first distance D1 is greater than the second distance D2, that is, the second optical functional layer 72 completely covers the first optical functional layer 71.
In the part where the second optical functional layer 72 protrudes from the first optical functional layer 71, there is only one layer of the second optical functional layer 72. Since the step difference produced by the second optical functional layer 72 is small, after the protective film is attached, it is not easy for bubbles to be caused by only the thickness of the second optical functional layer 72. Moreover, since the materials of the first optical functional layer 71 and the second optical functional layer 72 are both organic insulation materials and have good fluidity, arc shapes can be formed at the edge of the side wall of the first optical functional layer 71, as well as at the part of the second optical functional layer 72 covering the side wall of the first optical functional layer 71, and at the edge of the side wall of the second optical functional layer 72. This arrangement makes the step difference of the second optical functional layer 72 be relatively smooth, so bubbles are less likely to appear after the protective film is attached.
In this case, the difference C1 between the first distance D1 and the second distance D2 is greater than or equal to 30 microns, so that the second optical functional layer 72 can cover the first optical functional layer 71 well, and the step difference formed by the second optical functional layer 72 is relatively small and smooth.
In addition, since the width of the non-display area of the display panel is limited, the difference C1 between the first distance D1 and the second distance D2 is less than or equal to 70 microns, that is, the width of the part of the second optical functional layer 72 protruding beyond the first optical functional layer 71 is greater than or equal to 30 microns and less than or equal to 70 microns. For example, the difference between the first distance and the second distance may be 33 microns, 36.7 microns, 43.2 microns, 48 microns, 50 microns, 52 microns, 57.8 microns, 63.4 microns, 68.5 microns, etc.
In addition, the first distance is greater than or equal to 80 microns and less than or equal to 140 microns. For example, the first distance may be 83 microns, 86.7 microns, 93.2 microns, 98 microns, 102 microns, 107.8 microns, 113.4 microns, 118.5 microns, 122 microns, 127.5 microns, 132.4 microns, 138.7 microns, etc.
The second distance is greater than or equal to 50 microns and less than or equal to 90 microns. For example, the second distance may be 52 microns, 57.8 microns, 63.4 microns, 68.5 microns, 73.2 microns, 78 microns, 83 microns, 86.7 microns, etc.
Alternatively, the above data may vary depending on the product and the equipment process.
In some embodiments of this disclosure, as shown in
The crack blocking structure 16 and the interlayer dielectric layer 26 may be provided in the same layer and with the same material, that is, the crack blocking structure 16 and the interlayer dielectric layer 26 may be formed through the same patterning process. In addition, the encapsulation layer group 4 may also cover a part of the crack blocking structure 16 close to the display area AA.
In some embodiments of this disclosure, as shown in
With this arrangement, the step difference caused by the first optical function layer 71 at the edge of the display panel 100 can be completely eliminated. However, when the first optical functional layer 71 is formed by exposing and developing the first optical function material layer to remove the material in the non-display area NA, the developer may corrode the leads of the second touch layer 53, thereby causing the touch lead 62 to be disconnected or have excessive resistance and, thus, affecting the touch effect.
In order to solve the above problem, as shown in
After covering the touch leads 62 with the first optical functional layer 71, when the first optical functional material layer is exposed and developed to remove the material in the non-display area NA, the developer will not cause corrosion on the touch leads 62 of the second touch layer 53, thereby ensuring that the touch leads 62 will not be disconnected or have excessive resistance and, thus, preventing the touch effect from being affected. Moreover, since the touch lead 62 is still a certain distance away from the cutting channel 14, the covering parts 712 will not produce a step difference at the edge of the display panel 100, so no bubbles will be generated after the protective film is attached.
Furthermore, as shown in
In some embodiments of this disclosure, referring to
Specifically, if the difference between the fourth distance D4 and the third distance D3 is greater than or equal to 5 microns, the second optical functional layer 72 can cover the first optical functional layer 71 well, and the step difference formed by the second optical functional layer 72 is relatively small and smooth.
In addition, in order to prevent the second optical function layer 72 from extending too far into the bending area BEND and affecting the bending of the display panel 100, the difference between the fourth distance and the third distance is less than or equal to 15 microns. For example, the difference between the fourth distance D4 and the third distance D3 may be 5.3 microns, 5.7 microns, 6.2 microns, 6.8 microns, 7.1 microns, 7.8 microns, 8.4 microns, 8.8 microns, 9.2 microns, 9.8 microns, 10 microns, 10.8 micron, 11.4 micron, 12.8 micron, 13.7 micron, 14.5 micron and so on.
In addition, the third distance D3 may be greater than or equal to 3 microns and less than or equal to 8 microns. For example, the third distance may be 3.3 microns, 3.7 microns, 4.2 microns, 4.8 microns, 5.1 microns, 5.8 microns, 6.4 microns, or 6.8 microns. micron, 7.2 microns, 7.8 microns and so on.
The fourth distance D4 may be greater than or equal to 8 microns and less than or equal to 23 microns. For example, the fourth distance may be 8.3 microns, 8.7 microns, 9.2 microns, 9.8 microns, 10.1 microns, 10.8 microns, 11.4 microns, 11.8 microns, 12.2 microns, 12.8 microns, 13.7 microns, 14.2 microns, 15.8 microns, 16.1 microns, 17.8 microns, 18.4 microns, 19.8 microns, 20.2 microns, 21.8 microns, 22.5 microns and so on.
Alternatively, in some other embodiments of this disclosure, with reference to
Specifically, as long as the difference between the third distance D3 and the fourth distance D4 is greater than or equal to 5 microns, the second optical functional layer 72 can cover the first optical functional layer 71 well, and the step difference formed by the second optical functional layer 72 is relatively small and smooth.
In addition, in order to prevent the second optical function layer 72 from extending too long into the bending area BEND and affecting the bending of the display panel 100, the difference between the third distance D3 and the fourth distance D4 is less than or equal to 15 microns. For example, the difference between the third distance and the fourth distance may be 5.3 microns, 5.7 microns, 6.2 microns, 6.8 microns, 7.1 microns, 7.8 microns, 8.4 microns, 8.8 microns, 9.2 microns, 9.8 microns, 10 microns, 10.8 microns, 11.4 microns, 12.8 microns, 13.7 microns, 14.5 microns and so on.
In addition, the fourth distance D4 may be greater than or equal to 3 microns and less than or equal to 8 microns. For example, the third distance may be 3.3 microns, 3.7 microns, 4.2 microns, 4.8 microns, 5.1 microns, 5.8 microns, 6.4 microns, 6.8 microns, 7.2 microns, 7.8 microns and so on.
In addition, the third distance D3 may be greater than or equal to 8 microns and less than or equal to 23 microns. For example, the fourth distance may be 8.3 microns, 8.7 microns, 9.2 microns, 9.8 microns, 10.1 microns, 10.8 microns, 11.4 microns, 11.8 microns, 12.2 microns, 12.8 microns, 13.7 microns, 14.2 microns, 15.8 microns, 16.1 microns, 17.8 microns, 18.4 microns, 19.8 microns, 20.2 microns, 21.8 microns, 22.5 microns and so on.
Referring to
Since inorganic materials are relatively brittle, they are prone to cracks during bending; while organic materials are soft and are not prone to cracks during bending. Therefore, the inorganic materials are to be removed in the bending area BEND, while the organic material layer 30 can be remained or partial film layer(s) thereof can be removed.
Two patterning processes can be adopted to remove the third inorganic layer 29 in the bending area BEND. For example, a first mask etching (referred to as Etch Bending A MASK, “EBA MASK” for short) is adopted to form the first groove 291 on the third inorganic layer 29. Then a second mask etching (referred to as Etch Bending B MASK, “EBB MASK” for short) is applied on the third inorganic layer 29 in the first groove 291 to form the second groove 292, so as to make the third inorganic layer 29 further thinned, and cause the third inorganic layer 29 in the bending area BEND to be completely etched away. In other words, the second groove 292 is a through groove penetrating the third inorganic layer 29, and the first groove 291 exposes the second groove 292 to form a stepped groove structure. The edge line of the second groove 292 is the edge line of the bending area BEND, so that the orthographic projection of the bending area BEND on the substrate 1 overlaps with the orthographic projection of the first groove 291 on the base substrate. For example, the orthographic projection of the first groove 291 on the base substrate covers the orthographic projection of the bending area BEND on the base substrate 1, the orthographic projection of the first groove 291 on the base substrate has a larger area than the orthographic projection of the bending area BEND on the base substrate 1, and the third inorganic layer 29 is not provided in the bending area BEND.
In addition, it should be noted that in
In some other embodiments of this disclosure, as shown in
Specifically, as long as the difference between the sixth distance D6 and the fifth distance D5 is greater than or equal to 5 microns, the second optical functional layer 72 can cover the first optical functional layer 71 well, and the step difference formed by the second optical functional layer 72 is relatively small and smooth.
In addition, in order to prevent the second optical functional layer 72 from extending too long to fall above the bonding pin 15 and affecting the bonding of the display panel 100, the difference between the sixth distance D6 and the fifth distance D5 is less than or equal to 15 microns. For example, the difference between the sixth distance and the fifth distance may be 5.3 microns, 5.7 microns, 6.2 microns, 6.8 microns, 7.1 microns, 7.8 microns, 8.4 microns, 8.8 microns, 9.2 microns, 9.8 microns, 10 microns, 10.8 microns, 11.4 microns, 12.8 microns, 13.7 microns, 14.5 microns and so on.
In addition, the fifth distance D5 may be greater than or equal to 3 microns and less than or equal to 8 microns. For example, the third distance may be 3.3 microns, 3.7 microns, 4.2 microns, 4.8 microns, 5.1 microns, 5.8 microns, 6.4 microns, or 6.8 microns, 7.2 microns, 7.8 microns and so on.
The sixth distance D6 may be greater than or equal to 8 microns and less than or equal to 23 microns. For example, the fourth distance may be 8.3 microns, 8.7 microns, 9.2 microns, 9.8 microns, 10.1 microns, 10.8 microns, 11.4 microns, 11.8 microns, 12.2 microns, 12.8 microns, 13.7 microns, 14.2 microns, 15.8 microns, 16.1 microns, 17.8 microns, 18.4 microns, 19.8 microns, 20.2 microns, 21.8 microns, 22.5 microns and so on.
Alternatively, in some other embodiments of this disclosure, neither the first optical function layer 71 nor the second optical function layer 72 extends to the side of the bonding pin 15 away from the substrate 1. In other words, there is no overlap between the orthographic projection of the second optical function layer 72 and the first optical functional layer 71 on the base substrate 1 and the orthographic projection of the bonding pin 15 on the base substrate 1. The first optical functional layer 71 and the second optical functional layer 72 extend to the edge of the bonding pin 15 close to the display area AA. The second optical functional layer 72 is configured to cover the first optical functional layer 71, and the specific size relationship will not be repeated here.
Further, as shown in
Further, with reference to
Furthermore, a reflective layer 17 is provided in the non-display area NA, and the orthographic projection of the reflective layer 17 on the base substrate 1 is located within the orthographic projection of the first shielding part on the base substrate 1. For example, the orthographic projection of the first shielding part on the substrate 1 may coincide with the orthographic projection of the reflective layer 17 on the base substrate 1. The first shielding part can block external ambient light from reaching the reflective layer 17, thereby preventing the reflective layer 17 from reflecting the ambient light and affecting the display effect of the display panel 100. The orthographic projection of the first shielding part on the base substrate 1 may also cover the orthographic projection of the reflective layer 17 on the base substrate 1, and the orthographic projection of the first shielding part on the base substrate 1 has a larger area than that of the reflective layer 17 on the base substrate, so that the first shielding part not only covers the side of the reflective layer 17 away from the base substrate 1, but also covers the side walls of the reflective layer 17, thereby further ensuring the shielding effect of the first shielding part on the reflective layer 17, so as to prevent the reflective layer 17 from reflecting ambient light under strong ambient light and affecting the display effect of the display panel 100.
The reflective layer 17 may include a touch lead 62 and a first lead 171. The touch lead 62 and the first lead 171 are both provided between the base substrate 1 and the first optical functional layer 71. Specifically, the first lead 171 may include data lines, gate lines, power lines (VSS) and the like. Since the data lines, gate lines, power lines and the like are generally made of metal and have high reflectivity, after being blocked by the first shielding part, the data lines, gate lines, power lines and the like can be prevented from reflecting ambient light under strong ambient light and affecting the display effect of the display panel 100.
In some other embodiments of this disclosure, as shown in
However, there may be light leakage around the light-transmitting part 18, that is, the light from the sub-pixels 35 in the display area AA may be emitted through the light-transmitting part 18, and may further be emitted to the photodetector, camera or the like, thereby affecting the detection function of the photodetector or the imaging function of the camera.
In order to solve the above technical problems, the shielding layer 8 may also include a second shielding part 82. The second shielding part 82 may also be provided on the side of the touch layer group 5 away from the base substrate 1. The second shielding part 82 covers non-luminescent area around the light-transmitting part 18, that is, the orthographic projection of the second shielding part 82 on the base substrate 1 coincides with the orthographic projection of the non-luminescent area around the light-transmitting part 18 on the base substrate 1. The light emitted from the sub-pixels 35 can be blocked by the second shielding part 82 to prevent the light from being emitted through the light-transmitting part 18 or from being emitted to the photodetector or camera through the light-transmitting part 18 and, thus, avoid affecting the detection function of the photodetector or the imaging function of the camera.
In some embodiments, as shown in
Based on the same inventive concept, exemplary embodiments of this disclosure also provide a display device, which may include the display panel 100 described in any forgoing embodiment(s). The specific structure of the display panel 100 has been described in detail above and, thus, will not be repeated here.
The specific type of the display device is not particularly limited. Any type of display device commonly used in the field can be used, including, for example, mobile devices such as mobile phones, wearable devices such as watches, VR devices, and the like. Those skilled in the art can make selection according to specific usage of the display device, which will not be elaborated here.
It should be noted that, in addition to the display panel 100, the display device further includes other necessary parts and components. Taking a display as an example, it may further include, for example, a casing, a circuit board, a power cord, and the like. Those skilled in the art can make supplement according to specific usage requirement of the display device, which will not be elaborated here.
Compared with the prior art, the beneficial effects of the display device according to some embodiments of this disclosure are the same as the beneficial effects of the display panel 100 according to the forgoing embodiments, and will not be repeated here.
Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure that follow the general principles of the disclosure and include common knowledge or customary technical means in the art that are not disclosed in the disclosure. It is intended that the specification and examples be considered as exemplary only.
This application is the U.S. national phase application of PCT Application No. PCT/CN2023/070127, filed Jan. 3, 2023 and titled “DISPLAY PANELS AND DISPLAY DEVICES”, the entire content of which is incorporated herein by reference for all purposes.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2023/070127 | 1/3/2023 | WO |
