Patent Application
20190296051
The present disclosure relates to the field of display.
At present, a common display device, such as a monitor, a television, a mobile phone, a tablet, etc., usually has a regular rectangular display screen. With the development of display technology, the rectangular display screen can no longer meet diverse requirements of users. Thus, shape of the display screen is increasingly diverse.
Typically, a non-rectangular display screen is known as a special-shaped display screen. The special-shaped display screen includes a special-shaped display area and a non-special-shaped display area. A number of each row of pixel units in the special-shaped display area is different from a number of each row of pixel units in the non-special-shaped display area. When a scanning wire provides the same scan signal for the pixel units in a corresponding row, the special-shaped display area and the non-special-shaped display area may have different loads on the scanning wire due to a difference in the number of each row of the pixel units.
Accordingly, it is necessary to provide a display panel and a display device for the problem of a width difference of the power wire.
A display panel includes:
a display area;
and a non-display area disposed around the display area;
where the display area includes a first sub-display area and a second sub-display area, the first sub-display area includes a plurality of pixel units arranged in an array and a first scanning wire connecting each row of the pixel units; the second sub-display area includes a plurality of pixel units arranged in an array;
the non-display area includes a fixed potential signal wire, the fixed potential signal wire includes a first signal wire and a second signal wire, the second signal wire is connected to the first signal wire, and the second signal wire includes a connecting portion and strip portions connected to the connecting portion and arranged at intervals, a width of the second signal wire is greater than a width of the first signal wire; and
the display panel further includes a leading-out wire, the leading-out wire is correspondingly connected to the first scanning wire, and extends to the non-display area to overlap with the second signal wire, the second signal wire and the leading-out wire are provided at different layers, the second signal wire and the leading-out wire are used to generating a parasitic capacitance to compensate a load of the first scanning wire.
In an embodiment, a number of each row of the pixel units in the first sub-display area is less than a number of each row of the pixel units in the second sub-display area.
In an embodiment, a width of the strip portion is the same as a width of the first signal wire.
In an embodiment, the numbers of the pixel units in at least two rows of the first sub-display area are different, and lengths of the leading-out wires corresponding to the pixel units in the different rows are different.
In an embodiment, the length of the leading-out wire increases as the number of the pixel units in a corresponding row decreases.
In an embodiment, the display panel includes a notched area, the notched area is provided in the non-display area, and adjacent to the first sub-display area, to make the number of each row of the pixel units in the first sub-display area less than the number of each row of the pixel units in the second sub-display area.
In an embodiment, the display panel includes a front surface having the display area, a projection of the notched area on the front surface includes a bottom edge and two side edges distributed on both sides of the bottom edge, the first signal wire is disposed along the side edges, and the second signal wire is disposed along the bottom edge.
In an embodiment, the leading-out wire is disposed along the side edges and extends from the side edges to the bottom edge.
In an embodiment, the fixed potential signal wire includes a power supply signal wire.
In an embodiment, the second sub-display area includes a second scanning wire connected to each row of the pixel units, and a number of the strip portions of the second signal wire overlapping with the leading-out wire is in proportion to a difference between the number of the pixel units on the first scanning wire and the number of the pixel units on the second scanning wire.
In an embodiment, the power supply signal wire is coupled with the leading-out wire to form a parasitic capacitance to compensate for the load of the first scanning wire to make a load amount of the first scanning wire the same as a load amount of the second scanning wire.
In an embodiment, the display panel further includes a first metal layer, the first metal layer is a gate metal layer of transistors in the display panel, the first leading-out wire is further coupled with the first metal layer of the display panel to form a parasitic capacitance to compensate for the load of the first scanning wire.
In an embodiment, the leading-out wire is located between the second signal wire and the first metal layer of the display panel.
A display device includes the aforementioned display panel.
In an embodiment, the display device further includes a sensor provided in the notched area.
According to the aforementioned display panel and display device, the second signal wire with a wider width is used to be coupled with the leading-out wire of the first scanning wire to form a parasitic capacitance to compensate for the load of the first scanning wire, to make a load amount of the first scanning wire the same as a load amount of the second scanning wires. The second signal wire in the present application includes a plurality of strip portions arranged at intervals. Compared with the conventional full-surface power supply signal wire, the strip power wires arranged at intervals can reduce the difference between the wire widths of the first signal wire and the second signal wire, thereby reducing a difference between voltages of the pixel units connected to the first signal wire and second signal wire, so that the voltages of the pixel units are the same, and pixel currents thereof are also the same, thereby improving display uniformity.
As explained above, it has been desirable to make shaped displays. In conventional technology, a power compensating unit is provided in a non-display area of a display panel. By increasing an entire wire width of the power compensating unit, parasitic capacitance between a power wire and the scanning wire is increased, thereby increasing the load of the scanning wire. However, since a difference between wire widths of the power supply compensating unit and a power supply without the compensating unit is large, differences in resistance and capacitance on the power wire is large, so that brightness of a displayed image is uneven, which affects a display effect.
In order to make the above objects, features and advantages of the present disclosure more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. Numerous specific details are set forth in the description below in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without departing from the scope of the present application, and thus the present application is not limited by the specific embodiments disclosed below.
It will be understood that when an element is referred to as being “disposed” or “provided” on another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to another element or intervening elements may be present. The terms “vertical”, “horizontal”, “left”, “right”, and the like, as used herein, are for illustrative purposes only and are not intended to be limited as the only embodiment.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments, and not to limit the present application.
Referring to
The non-display area 120 is provided with a fixed potential signal wire 104. The fixed potential signal wire 104 includes a first signal wire 105 and a second signal wire 106. The second signal wire 106 includes a connecting portion (which is not shown in
The display panel 100 further includes a leading-out wire 107, the leading-out wire 107 and the first scanning wire 102 are connected in one to one correspondence, and the leading-out wire 107 extends to the non-display area 120 and overlaps with a projection of the second signal wire 106 on the display panel 100. The fixed potential signal wire 104 and the leading-out wire 107 are provided in different layers. Further, the second signal wire 106 and the leading-out wire 107 are provided in different layers, that is, the second signal wire 106 and the leading-out wire 107 are interposed with an insulating medium. A parasitic capacitance can be generated between the leading-out wire 107 and the second signal wire 106 to compensate for a load of the first scanning wire 103.
According to display panel provided in this embodiment, the fixed potential signal wire 104 and leading-out wire 107 of the first scanning wire 102 are provided in different layers 102 to form the parasitic capacitance to compensate for the load of the first scanning wire 102, such that the load of the first scanning wire 102 and the load of the second scanning wire 103 are the same. The fixed potential signal wire includes the first signal wire 105 and the second signal wire 106 with different widths. A total width of the second signal wire 106 is greater than the width of the first signal wire 105. The second signal wire 106 includes a plurality of strip portions 1062 arranged at intervals. A wire width difference between wire widths of each strip portion 1062 in the first direction and the first signal wire 105 in the second direction is small. Thus, a wire resistance difference between wire resistances of the strip portion 1062 and the first signal wire 105 is small, and a voltage difference on wire resistance loss is small, such that a voltage difference between the pixel units connected to the first signal wire 105 and the pixel units connected the second signal wire 106 can be reduced, thereby improving uniformity of di splay brightness and di splay effect.
Referring to
Specifically, in the present embodiment, the fixed potential signal wire 104 can be a power supply signal wire. The power supply signal wire is coupled with the leading-out wire 107 to form a parasitic capacitance to compensate for the load of the first scanning wire 102, to make the load of the first scanning wire 102 the same as the load of the second scanning wire 103. An end of the leading-out wire 107 is connected to the first scanning wire 102, and the other end thereof is extended by a frame trace to overlap with the second signal wire 106.
The second signal wire 106 is connected to the first signal wire 105 through the connecting portion 1061. The second signal wire 106 further includes strip portions 1062 that is connected to the connecting portion 1061 and arranged at intervals. The leading-out wire 107 extends to overlap the strip portion 1062. Since the leading-out wires 107 and the strip portions 1062 are provided in different layers, and interposed with an insulating medium, so an overlapping region of the leading-out wire 107 and the strip portions 1062 can form a parasitic capacitance to compensate for the load of the leading-out wire 107.
In addition, the leading-out wire 107 can also be coupled with a first metal layer (which is not shown in
In this embodiment, the width of the strip portion 1062 in the first direction D1 is the same as the width of the first signal wire 105 in the second direction D2, and the width of the connecting portion 1061 in the second direction D2 is the same as the width of the first signal wire in the second direction D2, and the connecting portion 1061, the strip portions 1062, and the first signal wire 105 belong to the same power supply signal wire. Since the wire widths at various positions of the power supply signal wires are the same, the resistances at various positions of the power supply signal wires are approximated. Since the first signal wire 105 is connected to each column of the pixel units 101 in the first sub-display area 111, the second signal wire 106 is connected to each column of the pixel units 101 in the second sub-display area 112, and the power supply voltages are supplied to the pixel units 101. Therefore, the first signal wire 105 and the second signal wire 106 have the same resistance on the wires, and the consumed resistances thereof are also the same. The power supply voltage distributed to the pixel units 101 in the first sub-display area 111 by the first signal wire 105 and the power supply voltage distributed t the pixel units in the second sub-display area 112 by the second signal wire 106 are the same, and the pixel current of the pixel units 101 in the first sub-display area 111 and the pixel current of the pixel units 101 in the second area 112 are the same, so that an light emission luminance throughout the display panel 100 is the same, thereby improving the display effect.
Of course, the width of the strip portion 1062 can be unequal to the width of the first signal wire 105. According to the requirements, in the case of satisfying the size of a required compensation capacitance, the width of the strip portion 1062 can be minimized to be close to the width of the first signal wire 105 in order to reduce the wire width difference between the strip portion and the first signal wire, so as to reduce the on-line resistance difference of various positions of the same power supply signal wire, and reduce the voltage difference of the pixel units connected to the power supply signal wires of different widths, thereby improving the luminance uniformity of the display panel.
In this embodiment, the pixel units connected to different widths on the power supply signal wire are respectively P1, P2, P3, and P4, wherein P1 and P4 are connected to the first signal wire, and P2 and P3 are connected to the second signal wire.
When comparing the power supply signal wire of the present application having the strip portions 1062 with the power supply signal wire 300 of
The change rate of the first current difference is a ratio of a difference between the current drop value of the solution shown in
It can be seen from the data in the table, when compared to the power supply signal wire 300 without a compensating unit, the current drop value from P1 to P2 and the current drop value from P3 to P4 of the power supply signal wire of the solution shown in
The power supply signal wire having the strip portions 1062 provided in this embodiment can reduce the wire width difference of various portions on the same power supply signal wire, that is, reduce the wire resistance difference on the same power supply signal wire. It can be seen from the date in the above table that the change rate of the second current difference corresponding to the solution of this embodiment is smaller than the change rate of the first current difference corresponding to the solution shown in
In an embodiment, the numbers of the pixel units 101 of at least two rows in the first sub-display area 111 are different, and the lengths of the leading-out wires 107 corresponding to the pixel units 101 in different rows are also different.
Specifically, the numbers of at least two rows of the pixel units 101 in the first sub-display area 111 are different, and the loads of the at least two rows of the first scanning wires 102 are different. Since the number of each row of the pixel units in the second sub-display area 112 is the same, the load of each row in the second scanning wire 103 is the same. Therefore, the load difference between different rows of the first scanning wire 102 and the second scanning wire 103 is different.
An end of the leading-out wire 107 is correspondingly connected to the first scanning wire 102, and the other end thereof is extended to the non-display area 120 and overlaps with the second signal wire 106. An overlapping region between the leading-out wire 107 and the strip portions 1062 of the second signal wire 106 forms a parasitic capacitance. The larger the area of the overlapping region, the larger the capacity of the parasitic capacitance, and the more the load on the first scanning wire 102 is compensated. Since the load required to be compensated for the first scanning wire 102 on different rows is different, the lengths of the overlapping regions between the different leading-out wires 107 and the second signal wires 106 are different, and the areas of the overlapping regions of the leading-out wires 107 and the strip portions 1062 are different as well.
In this embodiment, an extending direction of the leading-out wire 107 and an extending direction of the strip portions 1062 are perpendicular to each other. When the leading-out wire 107 intersects with the strip portions 1062, an overlapping region is generated, and the overlapping region can be used as a compensating unit connected to the first scanning wire 102. An arrangement direction of the plurality of strip portions 1062 is the same as the extending direction of the leading-out wire 107. The longer the leading-out wire 107 extends, the larger the number of strip portions 1062 overlapping the leading-out wire 107, and the larger the number of compensating units connected to the leading-out wire 107.
Therefore, the fewer the pixel units 101 connected to the first scanning wire 102, that is, the smaller the load, the larger the load difference between the first scanning wire 102 and the second scanning wire 103, and the more the load required to be compensated. Therefore, the fewer the pixel units 101 connected to the first scanning wire 102, the more the compensating units required to be connected, and the longer the leading-out wire 107 corresponding to the first scanning wire 102. That is, it is in proportion to the number of the compensating units connected to the first scanning wire 102, and the difference between the number of the pixel units on the first scanning wire 102 and the number of the pixel units on the second scanning wire 103. In other words, it is in proportion to the number of strip portions 1062 overlapping with the leading-out wire 107, and the difference between the number of the pixel units 101 on the first scanning wire 102 and the number of the pixel units 101 on the second scanning wire 103.
In this embodiment, the second signal wire 106 is designed as strip portions arranged at intervals, the leading-out wire 107 can be provided to overlap with the strip portions 1062 of different numbers according to the difference between the number of the pixel units 101 of each first scanning wire 102 and each second scanning wire 103 to compensate for the first scanning wire 102, so as to facilitate determining the load required to be compensated for each first scanning wire 102.
In an embodiment, the display panel 100 is provided with a notched area 130. The notched area 130 is disposed in the non-display area 120 and adjacent to the first sub-display area 111. Due to the provision of the notched area 130, the number of each row of the pixel units 101 in the first sub-display area 111 is smaller than the number of each row of the pixel units 101 in the second sub-display area 112. The notched area 130 can be used to arrange a functional component such as a sensor and the like, to provide a function such as imaging and the like for an electronic device.
In an embodiment, the display panel 100 includes a front surface having the display area 110, and a projection of the notched area 130 on the front surface of the display panel includes a bottom edge and two side edges disposed on both sides of the bottom edge. The first signal wire 105 is arranged along the side edge, and the second signal wire 106 is arranged along the bottom edge.
Specifically, in the present embodiment, the display panel 100 is a rectangular screen body having chamfers. The non-display area 120 of the display panel 100 includes an upper frame and a lower frame extending along the first direction D1, and a first side frame and a second side frame extending along the second direction D2. The first direction D1 is perpendicular to the second direction D2. The notched area 130 is formed by recessing a side edge of the upper frame into the display area 110. The fixed potential signal wire 104 is disposed in the upper frame. Since the notched area 130 is recessed inward, the upper frame includes a bottom edge portion and two side edge portions adjacent to and connected to the notched area 130. The first signal wire 105 is disposed along the side edges and disposed at an arcuate frame of the side edge portion. The second signal wire 106 is disposed along the bottom edge and disposed at a straight frame of the bottom edge portion. The frame further includes two straight frames connected the two side edge portions, respectively, and the second signal wire 106 is provided at the straight frame. In this embodiment, the first signal wire 105 and the second signal wire 106 form an entire continuous power supply signal wire.
In this embodiment, since an area of the arcuate frame is small, and the leading-out wire 107 is disposed at the arcuate frame of the side edge and extends from the arcuate frame portion to the straight frame, therefore the width of the first signal wire 105 disposed in the arcuate frame is narrow. Since an area of the straight frame is large, therefore the width of the second signal wire 106 disposed in the straight frame is wide, and can be used to couple with the leading-out wire 107 to form a parasitic capacitance, thereby compensating for the load of the first scanning wire 102, to make the load of the first scanning wire 102 equal to the load of the second scanning wire 103, the pixel current thereof is the same, and the light emission luminance is also the same.
A display device is provided according to yet another embodiment of the present disclosure, which includes a package shell and a display panel packages in the package shell. The display device further includes a sensor disposed in the notched area. The sensor can be any one chosen from a camera, a fingerprint recognition component, an iris recognition component, and an earpiece.
The technical features of the above embodiments can be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no collision in the combination of these technical features, it should be considered as the scope described in this specification.
The foregoing implementations are merely specific embodiments of the present disclosure, and are not intended to limit the protection scope of the present disclosure. It should be noted that any variation or replacement readily figured out by persons skilled in the art within the technical scope disclosed in the present disclosure shall all fall into the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810456794.0 | May 2018 | CN | national |
This application is a continuation application for International Application PCT/CN2018/111717, filed on Oct. 24, 2018, which claims the priority benefit of Chinese Patent Application No. 201810456794.0, titled “DISPLAY PANEL AND DISPLAY DEVICE” and filed on May 14, 2018. The entireties of both applications are incorporated by reference herein for all purposes.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2018/111717 | Oct 2018 | US |
| Child | 16435558 | US |
