Display device and array substrate

Abstract

A display device and an array substrate. The array substrate of the display device includes a substrate and a pixel electrode layer. The outermost effective pixel electrode included in the pixel electrode layer includes a first effective pixel electrode, which includes a first pixel electrode edge and a second pixel electrode edge, and the first pixel electrode edge is located between the second pixel electrode edge and the frame area; the common electrode layer included in the display device includes a block-shaped first extended common electrode, the orthographic projection of the first extended common electrode on the substrate overlaps with the orthographic projection of the first effective pixel electrode on the substrate, the first extended common electrode includes a first extended portion that exceeds the first effective pixel electrode, the first extended portion has a first extended portion edge, the substrate has a first substrate edge, and the first extended portion edge is located between the first substrate edge and the first pixel electrode edge. The display device can improve the bright line defect that occurs in the film tearing / ESD test.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display device and an array substrate. Background Art

[0002] Touch display products can be found everywhere around us. Touch display products save space, are easy to carry, and have better human-computer interaction.

[0003] Since its launch in 2015, TDDI (Touch and Display Driver Integration) touch display products have been widely favored by panel manufacturers due to their good performance, thin and light appearance, simplified supply chain and reduced costs. As consumers' requirements for screen-to-body ratio become higher and higher, the borders of TDDI touch display products are getting narrower and narrower. As the borders become narrower, the GND (ground line) line width becomes thinner and thinner, and many ESD-related defects continue to emerge. This poses a great challenge to the anti-ESD (Electro-Static discharge) ability of TDDI touch display products. Summary of the invention

[0004] The embodiment of the present disclosure provides a display device, which has an effective display area and a frame area outside the effective display area, and includes an array substrate and an opposing substrate arranged oppositely, wherein the array substrate includes a substrate and a pixel electrode layer located on the substrate, the pixel electrode layer includes a plurality of effective pixel electrodes located in the effective display area, the outermost effective pixel electrode among the plurality of effective pixel electrodes includes a first effective pixel electrode, the first effective pixel electrode includes a first pixel electrode edge and a second pixel electrode edge arranged along a first direction and extending along a second direction, and the first pixel electrode edge is located between the second pixel electrode edge and the frame area in the first direction, and the first direction and the second direction intersect each other; one of the array substrate and the opposing substrate includes a common electrode layer, the common electrode layer includes a block-shaped first extended common electrode, the orthographic projection of the first extended common electrode on the substrate partially overlaps with the orthographic projection of the first effective pixel electrode on the substrate, the first extended common electrode includes a first extended portion exceeding the first effective pixel electrode, the first extended portion has a first extended portion edge extending along the second direction, the substrate has a first substrate edge extending along the second direction, and the first extended portion edge is located between the first substrate edge and the first pixel electrode edge in the first direction.

[0005] For example, in the display device provided by at least one embodiment of the present disclosure, in the first direction, the length of the first extension portion is greater than or equal to 1 / 3 of the length of the first effective pixel electrode.

[0006] For example, in the display device provided in at least one embodiment of the present disclosure, the border area includes a first border area, a second border area, a third border area and a fourth border area arranged in sequence in a clockwise direction; the array substrate has an exceeding portion exceeding the opposing substrate, and the exceeding portion is located in the fourth border area; the first extension portion is located in at least one of the first border area to the fourth border area.

[0007] For example, in the display device provided in at least one embodiment of the present disclosure, the first extension portion is located in the first border area and / or the third border area; in the first direction, the ratio of the length of the first extension portion to the length of the first effective pixel electrode is greater than or equal to 1.

[0008] For example, in the display device provided in at least one embodiment of the present disclosure, the first extension portion is located in the second border area and / or the fourth border area; in the first direction, the ratio of the length of the first extension portion to the length of the first effective pixel electrode is greater than or equal to 1 / 3 and less than or equal to 1 / 2.

[0009] For example, in the display device provided by at least one embodiment of the present disclosure, the pixel electrode layer further includes a plurality of virtual pixel electrodes spaced apart from the plurality of effective pixel electrodes, and the plurality of virtual pixel electrodes are located in the border area.

[0010] For example, in the display device provided in at least one embodiment of the present disclosure, the plurality of virtual pixel electrodes include a first virtual pixel electrode, and an orthographic projection of the first virtual pixel electrode on the substrate at least partially overlaps with an orthographic projection of the first extension portion on the substrate.

[0011] For example, in the display device provided by at least one embodiment of the present disclosure, in the first direction, the edge of the first extension portion is located between the first virtual pixel electrode and the edge of the first substrate.

[0012] For example, in the display device provided by at least one embodiment of the present disclosure, the edge of the first virtual pixel electrode that is closest to the first extension portion and extends along the second direction is the first virtual pixel electrode edge, and the first virtual pixel electrode edge includes a first end and a second end; in the first direction, the distances from the first end and the second end to the edge of the first extension portion are not equal.

[0013] For example, in the display device provided by at least one embodiment of the present disclosure, the edge of the first virtual pixel electrode that is closest to the first extension portion and extends along the second direction is the first virtual pixel electrode edge, and the first virtual pixel electrode edge includes a first end, a second end, and a connecting line located between the first end and the second end, and the connecting line is parallel to the edge of the first extension portion.

[0014] For example, in the display device provided by at least one embodiment of the present disclosure, the border area also includes a light-transmitting area, at least part of the edge of the light-transmitting area is surrounded by the effective display area, wherein the multiple effective pixel electrodes include a plurality of second effective pixel electrodes that are closest to the light-transmitting area and arranged along the circumference of the light-transmitting area, each of the multiple second effective pixel electrodes includes a third pixel electrode edge and a fourth pixel electrode edge that are arranged along the first direction and extend along the second direction, and the third pixel electrode edge is located between the fourth pixel electrode edge and the light-transmitting area in the first direction; the common electrode layer includes a second extended common electrode, the orthographic projection of the second extended common electrode on the substrate partially overlaps with the orthographic projection of each of the multiple second effective pixel electrodes on the substrate, the second extended common electrode includes a second extended portion that exceeds each of the multiple second effective pixel electrodes, the second extended portion includes a plurality of sub-extended portions arranged corresponding to the multiple second effective pixel electrodes, each of the multiple sub-extended portions has a first sub-extended portion edge extending along the second direction, and the first sub-extended portion edge is located between the light-transmitting area and the third pixel electrode edge in the first direction.

[0015] For example, in the display device provided in at least one embodiment of the present disclosure, the edges of the first sub-expansion portions of two sub-expansion portions adjacent to each other along the circumference of the light-transmitting area have different extension directions.

[0016] For example, in the display device provided by at least one embodiment of the present disclosure, in the second direction, edges of first sub-expansion portions of at least two of the sub-expansion portions are arranged in a staggered manner in the first direction.

[0017] For example, in the display device provided by at least one embodiment of the present disclosure, the multiple virtual pixel electrodes also include a plurality of second virtual pixel electrodes located between the second effective pixel electrode and the light-transmitting area in the first direction, and the orthographic projections of the plurality of second virtual pixel electrodes on the substrate at least partially overlap with the orthographic projections of the plurality of sub-extension portions of the second extension portion on the substrate.

[0018] For example, in the display device provided by at least one embodiment of the present disclosure, an edge of a first sub-expansion portion of the plurality of sub-expansion portions is located between the corresponding second virtual pixel electrode and the light-transmitting area.

[0019] For example, in the display device provided in at least one embodiment of the present disclosure, the array substrate also includes a plurality of switching elements located on the substrate and spaced apart from each other, the plurality of switching elements including a plurality of first switching elements, and the plurality of first switching elements are respectively electrically connected to the plurality of effective pixel electrodes.

[0020] For example, in the display device provided in at least one embodiment of the present disclosure, the multiple switching elements also include multiple second switching elements, and the orthographic projections of the multiple second switching elements on the substrate at least partially overlap with the orthographic projections of the multiple virtual pixel electrodes on the substrate.

[0021] For example, in the display device provided in at least one embodiment of the present disclosure, the common electrode layer includes a plurality of spaced-apart sub-common electrodes, the plurality of sub-common electrodes are reused as touch electrodes, and the first extended common electrode and the second extended common electrode are respectively one of the plurality of sub-common electrodes.

[0022] For example, in the display device provided by at least one embodiment of the present disclosure, the first extended common electrode and the second extended common electrode are respectively an integrated structure.

[0023] For example, in the display device provided by at least one embodiment of the present disclosure, the absolute value of the operating voltage of the first extended common electrode and the second extended common electrode is less than or equal to 0.2V.

[0024] For example, in the display device provided by at least one embodiment of the present disclosure, the ratio of the area of ​​the first extended portion to the area of ​​the first extended common electrode does not exceed 1%.

[0025] For example, the display device provided by at least one embodiment of the present disclosure further includes a ground line surrounding the effective display area, wherein the line width of the ground line is less than or equal to 50 micrometers.

[0026] For example, in the display device provided in at least one embodiment of the present disclosure, one of the array substrate and the opposing substrate includes a black matrix layer, and the black matrix layer shields the first extended portion of the first extended common electrode and the second extended portion of the second extended public electrode.

[0027] For example, the display device provided by at least one embodiment of the present disclosure further includes an annular sealant connecting the array substrate and the opposing substrate, wherein the black matrix layer has an annular groove at the sealant.

[0028] For example, in the display device provided in at least one embodiment of the present disclosure, the groove is filled with a filter material.

[0029] The embodiment of the present disclosure also provides an array substrate, which has an effective display area and a frame area outside the effective display area, wherein the array substrate includes a substrate and a pixel electrode layer located on the substrate, the pixel electrode layer includes a plurality of effective pixel electrodes located in the effective display area, the outermost effective pixel electrode among the plurality of effective pixel electrodes includes a first effective pixel electrode, the first effective pixel electrode includes a first pixel electrode edge and a second pixel electrode edge arranged along a first direction and extending along a direction different from a second direction, and the first pixel electrode edge is located between the second pixel electrode edge and the frame area in the first direction, and the first direction and the second direction intersect each other; the array substrate also includes a common electrode layer, the common electrode layer includes a block-shaped first extended common electrode, the orthographic projection of the first extended common electrode on the substrate partially overlaps with the orthographic projection of the first effective pixel electrode on the substrate, the first extended common electrode includes a first extended portion exceeding the first effective pixel electrode, the first extended portion has a first extended portion edge extending along the second direction, the substrate has a first substrate edge extending along the second direction, and the first extended portion edge is located between the first substrate edge and the first pixel electrode edge in the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0031] Figure 1 is a partial cross-sectional schematic diagram of a display device;

[0032] Figure 2 A simplified top view of a display device provided in an embodiment of the present disclosure;

[0033] Figure 3A A schematic cross-sectional view of a local structure of a display device provided in an embodiment of the present disclosure;

[0034] Figure 3B for Figure 3A A partial enlarged schematic diagram of

[0035] Figure 4A A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the first border area;

[0036] Figure 4B A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the third frame area;

[0037] Figure 4CA schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the second frame area;

[0038] Figure 4D A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the fourth frame area;

[0039] Figure 5 A schematic diagram of the connection relationship between touch electrodes and touch signal lines in a display device provided by an embodiment of the present disclosure;

[0040] Fig. 6A A schematic diagram of the connection relationship between multiple switch elements and effective pixel electrodes and virtual pixel electrodes in a display device provided in an embodiment of the present disclosure;

[0041] Figure 6B A schematic diagram of the connection relationship between multiple switch elements and effective pixel electrodes and virtual pixel electrodes in a display device provided by another embodiment of the present disclosure;

[0042] Figure 6C A schematic top view of a display device provided by another embodiment of the present disclosure when the first extended common electrode is located in the first border area;

[0043] Figure 7 A schematic top view of a portion of the structure at a corner of a display device provided in an embodiment of the present disclosure;

[0044] Fig. 8A A schematic diagram of a structure in which a frame area of ​​a display device provided in an embodiment of the present disclosure includes a light-transmitting area;

[0045] Figure 8B A schematic structural diagram of a frame area including a light-transmitting area in a display device provided in another embodiment of the present disclosure;

[0046] Figure 8C A schematic diagram of the structure of a pixel electrode layer and a common electrode layer close to a light-transmitting area in a display device provided in an embodiment of the present disclosure;

[0047] Fig. 9 A schematic cross-sectional view of a portion of the structure in the first frame area or the third frame area of ​​the display device provided in an embodiment of the present disclosure;

[0048] Fig.10 A schematic top view of a ground wire in a display device provided in an embodiment of the present disclosure;

[0049] Fig.11A A partial cross-sectional schematic diagram of a part of the structure of an array substrate provided in an embodiment of the present disclosure;

[0050] Fig. 11B for Fig.11A A partial enlarged schematic diagram of . DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0052] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] Figure 1 FIG. 1 is a partial cross-sectional schematic diagram of a display device. Figure 1 As shown, the display device has an effective display area and a frame area and includes an array substrate ARS and an opposing substrate OPS arranged opposite to each other and a liquid crystal LC located between the two substrates. One of the opposing substrate OPS and the array substrate ARS includes a black matrix layer. The array substrate ARS includes a substrate BS and a common electrode layer CEL and a pixel electrode layer PEL located on the side of the substrate BS facing the liquid crystal LC, and a passivation insulating layer PVX separating the two electrode layers, and the common electrode CEL and the pixel electrode layer PEL are both located in the effective display area.

[0054] The inventors of the present application have noticed in their research that Figure 1During the film tearing / ESD (Electro-Static Discharge) test of the display device shown, a bright line appears on the side where the gate drive circuit of the display device is located. The inventor of the present application noted that the reasons for the bright line are as follows: at the moment of film tearing or when the screen of the display device is struck with an electrostatic gun during the ESD test, static electricity spreads from the center of the screen of the display device to the periphery on the cover plate CG, the polarizer Pol, the black matrix layer and the array substrate ARS and accumulates at the periphery; when the electrostatic discharge capability of the display device is relatively weak (for example, when the resistance of the polarizer Pol and the black matrix layer is relatively large and the grounding line is relatively narrow), the static electricity accumulated at the edges of each film layer in the display device forms an electrostatic field that affects the deflection of the edge liquid crystal LC; the common electrode layer CEL is relatively sensitive to the interference of the electrostatic field due to its own low voltage (for example, voltage ≤±0.2V), so the accumulation of static electricity at the edge of the common electrode layer CEL will aggravate the occurrence of bright lines.

[0055] The embodiment of the present disclosure provides a display device and an array substrate. The display device has an effective display area and a frame area outside the effective display area, and includes an array substrate and an opposing substrate arranged oppositely. The array substrate includes a substrate and a pixel electrode layer located on the substrate, the pixel electrode layer includes a plurality of effective pixel electrodes located in the effective display area, the outermost effective pixel electrode among the plurality of effective pixel electrodes includes a first effective pixel electrode, the first effective pixel electrode includes a first pixel electrode edge and a second pixel electrode edge arranged along a first direction and extending along a second direction different from the first direction, and the first pixel electrode edge is located in the first direction between the second pixel electrode edge and the portion of the frame area closest to the first pixel electrode edge; one of the array substrate and the opposing substrate includes a common electrode layer, the common electrode layer includes a block-shaped first extended common electrode, the orthographic projection of the first extended common electrode on the substrate overlaps with the orthographic projection of the first effective pixel electrode on the substrate, the first extended common electrode includes a first extended portion exceeding the first effective pixel electrode, the first extended portion has a first extended portion edge extending along the second direction, the substrate has a first substrate edge extending along the second direction, and the first extended portion edge is located in the first direction between the first substrate edge and the first pixel electrode edge. By extending the common electrode layer outside the effective display area (ie, extending the common electrode layer to the frame area), the bright line defect on the screen of the display device during the film tearing / ESD test can be improved.

[0056] Figure 2 A schematic top view of a display device provided in an embodiment of the present disclosure. Figure 2 As shown, the display device provided by the embodiment of the present disclosure has an effective display area and a frame area outside the effective display area. In some embodiments, the planar structure of the display device is a quadrilateral structure. For example, Figure 2As shown, the border area of ​​the display device includes a first border area, a second border area, a third border area and a fourth border area arranged in sequence in a clockwise direction, the first border area is opposite to the third border area, and the second border area is opposite to the fourth border area. The display device also includes an array substrate ARS and an opposing substrate OPS that are relatively arranged, and the array substrate ARS has an exceeding portion that exceeds the opposing substrate OPS, and the exceeding portion is located in the fourth border area. In other embodiments, the planar structure of the display device may also be a polygonal structure or a non-polygonal structure. In some embodiments, a gate driving circuit electrically connected to the gate line is provided in at least one of the first border area and the third border area, a data driving circuit electrically connected to the data line is provided in the fourth border area, and a flexible printed circuit board and other structures may also be provided in the fourth border area.

[0057] In the embodiment of the present disclosure, the first extended common electrode may be located in at least one of the first frame area to the fourth frame area.

[0058] Figure 3A A schematic cross-sectional view of a local structure of a display device provided in an embodiment of the present disclosure; Figure 3B for Figure 3A A partial enlarged schematic diagram of Figure 4A A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the first border area; Figure 4B A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the third frame area; Figure 4C A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the second frame area; Figure 4D A schematic top view of a display device provided by an embodiment of the present disclosure when the first extended common electrode is located in the fourth border area.

[0059] like Figure 3A and Figures 4A-4D As shown, the display device includes a plurality of sub-pixel regions (each sub-pixel region is a region surrounded by adjacent gate lines and adjacent data lines) intersecting and defined by a plurality of data lines SL and a plurality of gate lines (not shown in the figure), for example, the plurality of sub-pixel regions include a plurality of red sub-pixel regions, a plurality of green sub-pixel regions, and a plurality of blue sub-pixel regions. In some embodiments, as Figure 3A As shown, the display device further includes a color filter layer CF, the color filter layer CF includes a red filter material R located in a plurality of red sub-pixel regions, a green filter material G located in a plurality of green sub-pixel regions, and a blue filter material B located in a plurality of blue sub-pixel regions. In some embodiments, the counter substrate OPS may include a color filter layer CF, such as Figure 3A In some other embodiments, the array substrate ARS may include a color filter layer CF.

[0060] In some embodiments, Figure 3A As shown, the display device further includes a black matrix layer BM. Each sub-pixel region includes an opening area and a non-opening area surrounding the opening area, the non-opening area is an area of ​​the sub-pixel region blocked by the black matrix layer BM, and the opening area is an area of ​​the sub-pixel region not blocked by the black matrix layer BM, and the effective display area includes the opening area and the non-opening area of ​​the plurality of sub-pixel regions. In some embodiments, the counter substrate OPS may include a black matrix layer BM, such as Figure 3A In some other embodiments, the array substrate ARS may include a black matrix layer BM.

[0061] like Figure 3A and Figure 3B As shown, the display device includes an array substrate ARS and an opposing substrate OPS that are arranged opposite to each other. The array substrate ARS includes a substrate BS and a pixel electrode layer PEL located on the substrate BS. The pixel electrode layer PEL includes a plurality of effective pixel electrodes EP located in an effective display area. For example, each effective pixel electrode EP is located in a sub-pixel area, and each sub-pixel area has an effective pixel electrode EP, that is, the effective pixel electrode EP corresponds to the sub-pixel area one by one. FIG. 3A to FIG. 4D As shown, the outermost effective pixel electrode among the multiple effective pixel electrodes EP includes a first effective pixel electrode EP1, and the first effective pixel electrode EP1 includes a first pixel electrode edge PA and a second pixel electrode edge PB arranged in sequence along a first direction and extending along a second direction different from the first direction, the first pixel electrode edge PA and the second pixel electrode edge PB are the edges of the first effective pixel electrode EP1 that are farthest apart in the first direction, and the first pixel electrode edge PA is located in the first direction between the second pixel electrode edge PB and the portion of the border area that is closest to the first pixel electrode edge PA. It should be noted that the outermost effective pixel electrode refers to the effective pixel electrode adjacent to the border area among the multiple effective pixel electrodes EP. Taking the multiple effective pixel electrodes EP arranged in multiple rows and columns as an example, the outermost effective pixel electrodes among the multiple effective pixel electrodes EP are the effective pixel electrodes in the first row, the last row, the first column, and the last column.

[0062] One of the array substrate ARS and the counter substrate OPS includes a common electrode layer CEL. Figure 3A and Figure 3B In the illustrated embodiment, the array substrate ARS includes a common electrode layer CEL located on a substrate BS, and the common electrode layer CEL is separated from the pixel electrode layer PEL by a passivation insulating layer PVX. Figure 3A and Figure 3BAs shown, the common electrode layer CEL is located between the substrate BS and the pixel electrode layer PEL. In this case, each effective pixel electrode EP includes a plurality of strip electrodes spaced apart and connected in parallel. In other embodiments, the pixel electrode layer PEL is located between the substrate BS and the common electrode layer CEL. In this case, the common electrode layer CEL includes a plurality of strip electrodes spaced apart and connected in parallel.

[0063] like FIG. 3A to FIG. 4D As shown, the common electrode layer CEL includes a block-shaped first extended common electrode ECE1, and the orthographic projection of the first extended common electrode ECE1 on the substrate BS partially overlaps with the orthographic projection of the first effective pixel electrode EP1 on the substrate BS, that is, the first extended common electrode ECE1 includes a portion overlapping with the first effective pixel electrode EP1 and includes a portion not overlapping with the first effective pixel electrode EP1. It should be noted that the "block-shaped" first extended common electrode ECE1 means that the first extended common electrode ECE1 is not linear, and at this time, the first pixel electrode edge PA and the second pixel electrode edge PB of the first effective pixel electrode EP1 are located between the two edges of the first extended common electrode ECE1 that extend along the second direction and are farthest apart in the first direction. In some embodiments, the first extended common electrode ECE1 overlaps with a number of effective pixel electrodes EP arranged in sequence along the first direction and overlaps with a number of effective pixel electrodes EP arranged in sequence along the second direction. For example, as FIG. 3A to FIG. 4D As shown, the orthographic projection of the first extended common electrode ECE1 on the substrate BS also overlaps with the orthographic projection of the effective pixel electrode EP adjacent to the first effective pixel electrode EP1 in the first direction on the substrate BS; and, as shown 4A to 4D As shown, the orthographic projection of the first extended common electrode ECE1 on the substrate BS also overlaps with the orthographic projection of the effective pixel electrode EP adjacent to the first effective pixel electrode EP1 in the second direction on the substrate BS. In some embodiments, the first extended common electrode ECE1 may include a plurality of directly connected common electrode strips, that is, there is a strip-shaped opening between adjacent common electrode strips, and the strip-shaped opening penetrates the first extended common electrode ECE1 in the thickness direction of the first extended common electrode ECE1. In other embodiments, the first extended common electrode ECE1 may be a plate-shaped structure without the plurality of common electrode strips, such as 4A to 4D As shown, in this case, the orthographic projection of the portion of the entire first effective pixel electrode EP1 located in the opening area of ​​the sub-pixel region on the substrate BS is located within the orthographic projection of the first extended common electrode ECE1 on the substrate BS.

[0064] like FIG. 3A to FIG. 4DAs shown, the first extended common electrode ECE1 includes a first extended portion EC1 that extends beyond the first effective pixel electrode EP1, the first extended portion EC1 has a first extended portion edge CEA extending along the second direction, the edge of the substrate BS that is closest to the first extended portion edge CEA and extends along the second direction is the first substrate edge BSA, and the first extended portion edge CEA is located between the first substrate edge BSA and the first pixel electrode edge PA in the first direction. That is, in the first direction, the orthographic projection of the first extended portion edge CEA on the substrate BS is located between the orthographic projection of the first pixel electrode edge PA on the substrate BS and the first substrate edge BSA. In this case, the first extended portion edge CEA is located outside the effective display area, that is, the first extended portion edge CEA is located in the portion of the frame area that is closest to the first pixel electrode edge PA.

[0065] In the embodiment of the present disclosure, by extending the first extended common electrode ECE1 from the position overlapping with the first effective pixel electrode EP1 to the frame area (that is, extending outside the effective display area), the edge of static electricity accumulation can be changed from Figure 1 The effective display area in the manner shown is expanded outwardly beyond the effective display area, thereby effectively improving the bright line defects on the screen of the display device.

[0066] In some embodiments, the display device includes a plurality of first effective pixel electrodes EP1 and a plurality of first extended common electrodes ECE1. In some embodiments, the plurality of first effective pixel electrodes EP1 and the plurality of first extended common electrodes ECE1 may be located in the same frame area among the first to fourth frame areas. In other embodiments, the plurality of first effective pixel electrodes EP1 may be located in different frame areas, and the plurality of first extended common electrodes ECE1 may be located in different frame areas. For example, when the first frame area and the third frame area are arranged in sequence along the first direction, as Figure 4A and Figure 4B As shown, a portion of the first effective pixel electrode EP1 and a portion of the first extended common electrode ECE1 are located in the first frame area, and another portion of the first effective pixel electrode EP1 and another portion of the first extended common electrode ECE1 are located in the third frame area; or, in the case where the second frame area and the fourth frame area are arranged in sequence along the first direction, as shown in FIG. Figure 4C and Figure 4D As shown, a portion of the first effective pixel electrode EP1 and a portion of the first extended common electrode ECE1 are located in the second frame area, and another portion of the first effective pixel electrode EP1 and another portion of the first extended common electrode ECE1 are located in the fourth frame area.

[0067] In at least one embodiment, the absolute value of the working voltage of the first extended common electrode ECE1 is less than or equal to 0.2 V. In this way, vertical block defects caused by an excessively large voltage difference between the first extended common electrode ECE1 and the effective pixel electrode EP can be avoided.

[0068] In at least one embodiment, the first extended common electrode ECE1 is reused as a touch electrode. In this case, the display device provided by the embodiment of the present disclosure is an embedded touch display device (eg, a TDDI touch display device), so that the display device has a high degree of integration.

[0069] Figure 5 A schematic diagram of the connection relationship between touch electrodes and touch signal lines in a display device provided by an embodiment of the present disclosure.

[0070] For example, Figure 5 As shown, the common electrode layer includes a plurality of spaced-apart sub-common electrodes TE, which are reused as touch electrodes, and the first extended common electrode ECE1 is one of the outermost sub-common electrodes among the plurality of sub-common electrodes TE. For example, the plurality of sub-common electrodes TE are arranged in a plurality of rows and columns, and the outermost sub-common electrodes among the plurality of sub-common electrodes TE are the sub-common electrodes TE in the first row, the last row, the first column, and the last column. Figure 5 As shown, the display device also includes a plurality of touch signal lines Tx and a touch control circuit IC, and each touch electrode TE is electrically connected to the corresponding touch signal line Tx through a via VH, thereby being electrically connected to the touch control circuit IC through the touch signal line Tx. In at least one embodiment, a time-sharing drive method can be adopted, that is: in the display stage, a common voltage is applied to the sub-common electrode TE to realize the display function; in the touch stage, a touch signal is applied to the sub-common electrode TE to realize the touch function. For example, the touch signal line Tx is multiplexed as a common electrode signal line to provide a signal to the sub-common electrode TE in the display stage. For example, the display device also includes a flexible printed circuit board FPC, which is located on one side of the back ion common electrode TE of the touch control circuit IC.

[0071] In some embodiments, 4A to 4D As shown, the touch signal line Tx is located between adjacent sub-pixel areas to avoid affecting the aperture ratio of the display device. For example, a plurality of sub-pixel areas in the display device are divided into a plurality of pixel areas, each pixel area including three sub-pixel areas. In this case, for example, a touch signal line Tx is arranged between adjacent pixel areas, and there is only one column of pixel areas between two adjacent touch signal lines Tx, such as 4A to 4D In some embodiments, 4A to 4DAs shown, the first extended common electrode ECE1 can overlap with multiple touch signal lines Tx, that is, multiple touch signal lines Tx are arranged in the area where the first extended common electrode ECE1 is located, a part of the multiple touch signal lines Tx (for example, one touch signal line Tx) is electrically connected to the first extended common electrode ECE1, and another part of the multiple touch signal lines Tx is not electrically connected to the first extended common electrode ECE1. The arrangement of the touch signal lines Tx includes but is not limited to 4A to 4D The embodiment shown.

[0072] In at least one embodiment, each sub-common electrode TE is an integrated structure, and accordingly, the first extended common electrode ECE1 is an integrated structure.

[0073] In at least one embodiment, the absolute value of the operating voltage of each sub-common electrode TE is less than or equal to 0.2 V. In this way, vertical block defects caused by an excessively large voltage difference between the sub-common electrode TE and the effective pixel electrode EP can be avoided.

[0074] In at least one embodiment of the present disclosure, since the first extended common electrode ECE1 is extended to the frame area, the area of ​​the first extended common electrode ECE1 is larger than the area of ​​the sub-common electrodes TE that are not extended outward among the above-mentioned multiple sub-common electrodes TE (the areas of these sub-common electrodes TE that are not extended outward are roughly the same, and "roughly" means ignoring the influence of manufacturing process errors). In order to avoid affecting the touch effect, in at least one embodiment, the ratio of the area of ​​the first extended portion EC1 to the area of ​​the first extended common electrode ECE1 does not exceed 1%. In the embodiment of the present disclosure, by making the first extended portion EC1 occupy only a very small part of the first extended common electrode ECE1, the poor bright line of the display device is effectively improved while taking into account the touch effect.

[0075] In at least one embodiment, in the first direction, the length of the first extension portion EC1 is greater than or equal to 1 / 3 of the length of the first effective pixel electrode EP1. For example, the length of the first extension portion EC1 in the first direction is greater than or equal to 1 / 3 of the length of the sub-pixel region where the first effective pixel electrode EP1 is located in the first direction. In this way, it can be ensured that the edge CEA of the first extension portion is far away from the effective display area, thereby effectively improving the poor bright line on the screen of the display device. It should be noted that the length of the first effective pixel electrode EP1 is the distance between the first pixel electrode edge PA and the second pixel electrode edge PB of the first effective pixel electrode EP1 in the first direction.

[0076] The length of the first extended portion EC1 in the first direction can be adjusted according to the border area where it is located.

[0077] For example, when the first extended portion EC1 is located in the first border area (eg Figure 4A as shown) or the third border area (as shown Figure 4B In the case of (as shown in the figure), in the first direction, the ratio of the length of the first extension portion EC1 to the length of the first effective pixel electrode EP1 is greater than or equal to 1. The length of the first effective pixel electrode EP1 in the first direction is the distance between the first pixel electrode edge PA and the second pixel electrode edge PB of the first effective pixel electrode EP1 in the first direction. For example, in the first direction, the ratio of the length of the first extension portion EC1 to the length of the first effective pixel electrode EP1 is also less than or equal to 2. For example, when the first extension portion EC1 is located in the first border area (as shown in the figure), the length of the first extension portion EC1 to the length of the first effective pixel electrode EP1 is greater than or equal to 1. Figure 4A as shown) or the third border area (as shown Figure 4B In the case shown in FIG. 1 , in the first direction, the ratio of the length of the first extension portion EC1 to the length of the sub-pixel region where the first effective pixel electrode EP1 is located (i.e., the length of the adjacent data line SL defining the sub-pixel region in the first direction) is greater than or equal to 1. For example, in the first direction, the ratio of the length of the first extension portion EC1 to the length of the sub-pixel region where the first effective pixel electrode EP1 is located is also less than or equal to 2.

[0078] For example, when the first extended portion EC1 is located in the second border area (eg Figure 4C as shown) or the fourth border area (as shown Figure 4D In the case shown in the figure, in the first direction, the ratio of the length of the first extension portion EC1 in the first direction to the length of the first effective pixel electrode EP1 in the first direction is greater than or equal to 1 / 3 and less than or equal to 1 / 2. For example, in the first direction, the ratio of the length of the first extension portion EC1 in the first direction to the length of the sub-pixel area where the first effective pixel electrode EP1 is located in the first direction (that is, the length of the adjacent gate line in the first direction that defines the sub-pixel area) is greater than or equal to 1 / 3 and less than or equal to 1 / 2. The length of the first extension portion EC1 in the first direction should not be too small to ensure that the edge CEA of the first extension portion is far away from the effective display area, thereby effectively improving the poor bright line on the screen of the display device; the length of the first extension portion EC1 in the first direction should not be too large to avoid increasing the width of the border area.

[0079] It should be noted that, in some embodiments, 4A to 4DAs shown, the first pixel electrode edge PA of the first effective pixel electrode EP1 is not linear, and the first extended common electrode ECE1 includes a portion located between adjacent effective pixel electrodes EP in the second direction. In this case, the length of the first extended portion EC1 in the first direction refers to the maximum length of the portion of the first extended portion EC1 facing the first pixel electrode edge PA in the first direction, that is, the maximum distance in the first direction between the portion of the first extended portion edge CEA facing the first pixel electrode edge PA and the first pixel electrode edge PA (that is, the distance between the orthographic projections in the first direction).

[0080] In some embodiments, 4A to 4D As shown, the effective pixel electrode EP includes a plurality of strip electrodes that are spaced apart and connected in parallel, and the inclination directions of the strip electrodes of two adjacent rows of effective pixel electrodes EP are opposite. Figure 4A and Figure 4B As shown, the strip electrodes of the first row of effective pixel electrodes EP are inclined to the right, and the strip electrodes of the second row of effective pixel electrodes EP are inclined to the left.

[0081] In the case that the first extended common electrode ECE1 is located in different border areas, the first extended portion edge CEA of the first extended common electrode ECE1 may have different shapes.

[0082] For example, when the first extended portion EC1 is located in the first border area (eg Figure 4A as shown) or the third border area (as shown Figure 4B In the case shown in FIG. 1 , the first extension portion edge CEA of the first extended common electrode ECE1 has a first edge segment ECA1 and a second edge segment ECA2 whose extension directions intersect, the first edge segment ECA1 is inclined in the same direction as the strip electrodes of the first row of effective pixel electrodes EP, and the second edge segment ECA2 is inclined in the same direction as the strip electrodes of the second row of effective pixel electrodes EP. For example, Figure 4A As shown, the first edge segment ECA1 and the second edge segment ECA2 of the first extension portion edge CEA form a first curved portion, and the curved end of the first curved portion (the middle portion of the first curved portion) is closer to the first substrate edge BSA than the rest of the first curved portion. Figure 4B As shown, the first edge segment ECA1 and the second edge segment ECA2 of the first extension portion edge CEA form a second curved portion, and the curved end of the second curved portion (the middle portion of the second curved portion) is farther from the first substrate edge BSA than the rest of the second curved portion. Figure 4A ) and the other part is located in the third border area (as shown Figure 4BIn the case shown in the figure, for the first extended common electrode ECE1 located in the first border area and the first extended common electrode ECE1 located in the third border area, both of which are adjacent to the same row of effective pixel electrodes EP, the portions of the first extended portion edges CEA of the two first extended common electrodes ECE1 facing the same row of effective pixel electrodes EP have the same inclination direction.

[0083] For example, when the first extended portion EC1 is located in the second border area (eg Figure 4C as shown) or the fourth border area (as shown Figure 4D In the case shown in the figure, the first extension portion edge CEA is a straight line; and in the first direction, the distance from the first extension portion edge CEA to the first effective pixel electrode EP1 when the first extension portion edge CEA is located in the second frame area is greater than the distance from the first extension portion edge CEA to the first effective pixel electrode EP1 when the first extension portion edge CEA is located in the fourth frame area. That is to say, in the first direction, the distance from the first extension portion edge CEA to the first pixel electrode edge PA of the first effective pixel electrode EP1 when the first extension portion edge CEA is located in the second frame area is greater than the distance from the first extension portion edge CEA to the first pixel electrode edge PA of the first effective pixel electrode EP1 when the first extension portion edge CEA is located in the fourth frame area.

[0084] In some embodiments, FIG. 3A to FIG. 4D As shown, the pixel electrode layer PEL further includes a plurality of virtual pixel electrodes DP (DPs) spaced apart from the plurality of effective pixel electrodes EP. Figure 3A and Figure 3B Only one virtual pixel electrode DP is shown in the figure, and the multiple virtual pixel electrodes DP are located in the frame area. That is to say, the effective pixel electrode EP is the pixel electrode located in the effective display area, and the virtual pixel electrode DP is the pixel electrode located in the frame area.

[0085] In the embodiment of the present disclosure, the array substrate ARS further includes a plurality of switch elements located on the substrate BS, and the plurality of switch elements are respectively located in the plurality of sub-pixel regions to electrically connect the effective pixel electrodes EP in the plurality of sub-pixel regions. For example, the switch element is a thin film transistor, and the thin film transistor includes a gate, an active layer, and a source and a drain electrically connected to the active layer, the gate is electrically connected to the gate line (for example, directly connected), and the source is electrically connected to the data line SL (for example, directly connected).

[0086] Fig. 6A A schematic diagram of the connection relationship between multiple switch elements and effective pixel electrodes and virtual pixel electrodes in a display device provided by an embodiment of the present disclosure. Fig. 6A As shown, the array substrate ARS further includes a plurality of switch elements T located on the substrate BS and spaced apart from each other. The plurality of switch elements T include a plurality of first switch elements T1 ( Fig. 6AOnly one first switch element T1 is shown for illustration), and the plurality of first switch elements T1 are electrically connected (for example, electrically connected through via holes VHP) to the plurality of effective pixel electrodes EP. For example, the plurality of first switch elements T1 are electrically connected to the plurality of effective pixel electrodes EP one by one. That is to say, each first switch element T1 is electrically connected to only one effective pixel electrode EP, and each effective pixel electrode EP is electrically connected to only one first switch element T1.

[0087] In at least one embodiment, 4A to 4D As shown, the effective pixel electrode EP has a protrusion PP at the end thereof, and the effective pixel electrode EP is electrically connected to the first switch element T1 through the protrusion PP. At this time, for example, the orthographic projection of the protrusion PP on the substrate BS overlaps with the orthographic projection of the via hole VHP on the substrate BS. Fig. 6A As shown, the plurality of switch elements further include a plurality of second switch elements T2 ( Fig. 6A Only one second switch element T2 is shown for illustration), the orthographic projection of each second switch element T2 on the substrate BS overlaps with the orthographic projection of a virtual pixel electrode DP on the substrate BS, and the second switch element T2 is electrically insulated from the virtual pixel electrode DP, so there is no via hole VHP between the second switch T2 and the virtual pixel electrode DP. In other words, the effective pixel electrode EP is electrically connected to the switch element T, and the virtual pixel electrode DP overlaps with the switch element T but is not electrically connected. For example, the virtual pixel electrode DP also has a protrusion PP corresponding to the switch element T at its end.

[0088] In the disclosed embodiment, by setting a virtual pixel electrode DP, the electric field around the effective pixel electrode EP can be made more uniform, so that the peripheral display effect is better. On the other hand, in the process of making the effective pixel electrode EP, it is necessary to expose the photoresist coated on the material used to form the effective pixel electrode EP (hereinafter referred to as the pixel electrode material); if the virtual pixel electrode DP is not set on the outside of the effective pixel electrode EP, since the light transmittance on the edge side is larger than that on other areas, the edge side is exposed to a large amount and overexposure occurs, which in turn causes the outermost effective pixel electrode to be too thin or broken, thereby affecting the peripheral pixel display; therefore, by setting a virtual pixel electrode DP on the outside of the effective pixel electrode EP, the effective pixel electrode can be effectively protected from exposure. On the other hand, there is no connection via VHP between the virtual pixel electrode DP and the switching element T, so that the virtual pixel electrode DP is not used for display.

[0089] Figure 6B A schematic diagram of the connection relationship between multiple switch elements and effective pixel electrodes and virtual pixel electrodes in a display device provided by another embodiment of the present disclosure; Figure 6CA schematic top view of a display device provided by another embodiment of the present disclosure when the first extended common electrode is located in the first border area.

[0090] For example, in other embodiments, Figure 6B As shown, the second switch element T2 can also be electrically connected to the virtual pixel electrode DP. In this case, a via hole VHP2 is set between the second switch T2 and the virtual pixel electrode DP. The second switch T2 is electrically connected to the virtual pixel electrode DP through the via hole VHP2. That is, the virtual pixel electrode DP is electrically connected to the second switch T2. For example, Figure 6C As shown, the second switch T2 corresponds to the end of the virtual pixel electrode DP (for example, the first virtual pixel electrode DP1), and the end of the virtual pixel electrode DP also has a protrusion PP corresponding to the second switch element T2. The second switch T2 is connected to the data line SL and the protrusion PP connected to the virtual pixel electrode DP. The second switch T2 is connected to the protrusion PP through the via hole VHP2. The data line SL connected to the virtual pixel electrode DP is provided with a break DK1 at the end corresponding to the virtual pixel electrode DP to cut off the data signal transmitted by the data line SL, so that the virtual pixel electrode DP is not used for display.

[0091] In some embodiments, the plurality of virtual pixel electrodes DP included in the pixel electrode layer PEL may be located in the same frame area among the first frame area to the fourth frame area. In other embodiments, the plurality of virtual pixel electrodes DP may be located in different frame areas respectively.

[0092] In some embodiments, when the virtual pixel electrode DP is located in the first border area (eg Figure 4A as shown) or the third border area (as shown Figure 4B In some embodiments, when the virtual pixel electrode DP is located in the second frame area (such as Figure 4C as shown) or the fourth border area (as shown Figure 4D In the case where the second frame area and the fourth frame area are arranged in sequence along the first direction, the length of the virtual pixel electrode DP in the first direction is approximately 1 / 3 to 1 / 2 of the length of the effective pixel electrode EP in the first direction. Since there are many signal lines in the fourth frame area, the length of the virtual pixel electrode DP in the first direction when it is located in the fourth frame area is less than the length of the virtual pixel electrode DP in the first direction when it is located in the third frame area.

[0093] In at least one embodiment, FIG. 3A to FIG. 4DAs shown, the plurality of virtual pixel electrodes DP included in the pixel electrode PEL include a first virtual pixel electrode DP1 , and an orthographic projection of the first virtual pixel electrode DP1 on the substrate BS overlaps with an orthographic projection of the first extension portion EC1 on the substrate BS.

[0094] In at least one embodiment, 4A to 4D As shown, in the first direction, the first extension portion edge CEA is located between the first virtual pixel electrode DP1 and the first substrate edge BSA, that is, the orthographic projection of the first extension portion edge CEA on the substrate BS is located between the orthographic projection of the first virtual pixel electrode DP1 on the substrate BS and the first substrate edge BSA. In the embodiment of the present disclosure, since the first virtual pixel electrode DP1 is not electrically connected to the switching element T, although the static electricity accumulated at the first extension portion edge CEA can generate an electric field between the first extension portion edge CEA and the first virtual pixel electrode DP1, the black matrix BM (such as Fig. 9 As shown in the figure, the edge CEA of the first extension portion is shielded, so that bright line defects will not occur during the film tearing / ESD test.

[0095] In some embodiments, the pattern of the virtual pixel electrode DP is consistent with the pattern of the effective pixel electrode EP. Figure 4A and Figure 4B As shown in FIG. 1 , the virtual pixel electrode DP includes a plurality of strip electrodes spaced apart from each other. Figure 4A and Figure 4B As shown in FIG. 1 , the strip electrode of each virtual pixel electrode DP in the border area has substantially the same inclination direction and substantially the same length as the strip electrode of the effective pixel electrode EP adjacent to the virtual pixel electrode DP. In other embodiments, the pattern of the virtual pixel electrode DP is different from the pattern of the effective pixel electrode EP. For example, Figure 4C and Figure 4D As shown, the strip electrodes of each virtual pixel electrode DP in the frame area and the strip electrodes of the effective pixel electrodes EP adjacent to the virtual pixel electrode DP have different inclination directions and different lengths.

[0096] like 4A to 4D As shown in FIG. 1 , the edge of the first virtual pixel electrode DP1 that is closest to the first extension portion EC1 and extends along the second direction is the first virtual pixel electrode edge DPA. Figure 4A and Figure 4B As shown, the first virtual pixel electrode edge DPA of the first virtual pixel electrode DP1 is not linear, so the shape of the first extension portion edge CEA of the first extended common electrode ECE1 also changes with the shape of the first virtual pixel electrode edge DPA. Figure 4C and Figure 4DAs shown, the first virtual pixel electrode edge DPA of the first virtual pixel electrode DP1 is straight.

[0097] For example, Figure 4A and Figure 4B As shown, the first virtual pixel electrode edge DPA includes a first end DPA1 and a second end DPA2, and the first end DPA1 and the second end DPA2 are both curved ends. For example, the distances from the orthographic projections of the first end DPA1 and the second end DPA2 on the substrate BS to the orthographic projections of the first extension portion edge CEA on the substrate BS are not equal. That is to say, when the first extension portion EC1 is located in the first border area or the third border area, the lengths of the first extension portion EC1 at the first end DPA1 and the second end DPA2 (i.e., the lengths in the first direction) are not equal. For example, Figure 4A As shown, in the second direction, the second end DPA2 of the first virtual pixel electrode edge DPA is located between the first end DPA1 of the first virtual pixel electrode edge DPA and the protrusion PP; the length of the first extension portion EC1 along the first direction at the first end DPA1 is greater than the length of the first extension portion EC1 along the first direction at the second end DPA2, that is, the distance between the edge CEA of the first extension portion EC1 and the first end DPA1 in the first direction is greater than the distance between the edge CEA of the first extension portion EC1 and the second end DPA2 in the first direction. For example, Figure 4B As shown, in the second direction, the second end DPA2 of the first virtual pixel electrode edge DPA is located between the first end DPA1 of the first virtual pixel electrode edge DPA and the protrusion PP; the length of the first extension portion EC1 along the first direction at the first end DPA1 is smaller than the length of the first extension portion EC1 along the first direction at the second end DPA2, that is, the distance between the edge CEA of the first extension portion EC1 and the first end DPA1 in the first direction is smaller than the distance between the edge CEA of the first extension portion EC1 and the second end DPA2 in the first direction. For example, Figure 4A and Figure 4B As shown, the first virtual pixel electrode edge DPA includes a connection line between the first end DPA1 and the second end DPA2, the connection line is substantially straight, and the connection line is substantially parallel to the portion of the first extension portion edge CEA facing the connection line. In this way, the first extension portion EC1 can have different lengths along the first direction at different positions of the first virtual pixel electrode edge DPA, thereby effectively avoiding poor bright line and preventing the first extension portion EC1 from increasing the width of the border area.

[0098] In at least one embodiment, on the basis that the plurality of effective pixel electrodes EP include the first effective pixel electrode EP1 and the common electrode layer CEL includes the first extended common electrode ECE1, the outermost effective pixel electrode among the plurality of effective pixel electrodes EP may further include a second effective pixel electrode, the second effective pixel electrode and the first effective pixel electrode are respectively located in adjacent border areas, and the common electrode layer CEL may further include a second extended common electrode, the second extended common electrode and the first extended common electrode ECE1 are respectively located in adjacent border areas. That is, the first effective pixel electrode EP1 and the first extended common electrode ECE1 are located in the first border area (such as Figure 4A as shown) and the third border area (as Figure 4B ), and the second effective pixel electrode and the second extended common electrode are located in one of the second frame area and the fourth frame area; or, the second effective pixel electrode and the second extended common electrode are located in one of the first frame area and the third frame area, and the first effective pixel electrode EP1 and the first extended common electrode ECE1 are located in the second frame area (as shown in FIG. Figure 4C as shown) and the fourth border area (as shown Figure 4D one of the above).

[0099] Figure 7 Schematic diagram of a top view of a portion of the structure at a corner of a display device provided in an embodiment of the present disclosure. For example, in some embodiments, Figure 7 The schematic diagram of the structure of two adjacent connecting corners located in the first frame area, the second frame area, the third frame area and the fourth frame area is shown. For example, the corner where the third frame and the second frame are connected is taken as an example for introduction. The structures of other corners can be similar to this, and will not be repeated here. It should be noted that Figure 7 Only a partial structure at a corner is shown.

[0100] For example, in some embodiments, Figure 7 As shown, combined Figure 4B as well as Figure 4C, multiple first effective pixel electrodes EP11 are respectively located in the Yn1 row, the Yn2 row, the Yn3 row, the Yn4 row and the Yn5 row. For example, the second column from the right in each row in the figure is the setting position of the effective pixel electrode EP11. The first effective pixel electrodes EP11 in the Yn3 row, the Yn4 row and the Yn5 row are located in the same column (the second column from the right in the figure), while the first effective pixel electrodes EP11 in the Yn1 row and the Yn2 row are staggered and are located in different columns from the first effective pixel electrodes EP11 in the Yn3 row, the Yn4 row and the Yn5 row. Each first effective pixel electrode EP11 includes a first pixel electrode edge PA11 and a second pixel electrode edge PB11 extending along the second direction, and the first pixel electrode edge PA11 is closer to the first substrate edge BSA than the second pixel electrode edge PB11. It should be noted that, Figure 7 The structure of the first effective pixel electrode EP11 is Figure 4B as well as Figure 4C The first effective pixel electrode EP1 is the same as that in FIG.

[0101] like Figure 7 As shown, the first extended common electrode ECE11, the orthographic projection of the first extended common electrode ECE11 on the substrate BS partially overlaps with the orthographic projection of the first effective pixel electrode EP11 on the substrate BS, that is, the first extended common electrode ECE11 includes a portion overlapping with the first effective pixel electrode EP11 and includes a portion not overlapping with the first effective pixel electrode EP11. The first extended common electrode ECE11 continues to extend in a direction closer to the first substrate edge BSA than the first effective pixel electrode EP11. The first extended common electrode ECE11 includes a plurality of first extended portions that extend beyond the first effective pixel electrode EP11. The plurality of first extended portions are respectively located in the same row as a first effective pixel electrode EP11. Figure 7In the embodiment, the plurality of first extension portions include, for example, a first extension portion ECE111, a first extension portion ECE112, a first extension portion ECE113, a first extension portion ECE114, and a first extension portion ECE115, which are respectively located in the Yn1 row, the Yn2 row, the Yn3 row, the Yn4 row, and the Yn5 row. Each first extension portion has a first extension portion edge extending along the second direction, and the first extension portion edge is located in the first direction between the first substrate edge BSA and the first pixel electrode edge PA11. For example, the first extension portion ECE111, the first extension portion ECE112, the first extension portion ECE113, the first extension portion ECE114, and the first extension portion ECE115 include a first extension portion edge ECA11, a first extension portion edge ECA12, a first extension portion edge ECA13, a first extension portion edge ECA14, and a first extension portion edge ECA15, respectively. That is, in the same row, in the first direction, the orthographic projection of the edge of the first extension portion on the substrate BS is located between the orthographic projection of the first pixel electrode edge PA11 on the substrate BS and the first substrate edge BSA. In this case, the edge of the first extension portion is located outside the effective display area, that is, the edge of the first extension portion is located in the portion of the frame area closest to the edge of the first pixel electrode.

[0102] In the above embodiment, by extending the first extended common electrode from the position overlapping with the first effective pixel electrode to the frame area (that is, extending outside the effective display area), the edge of static electricity accumulation can be changed from Figure 1 The effective display area in the manner shown is expanded outwardly beyond the effective display area, thereby effectively improving the bright line defects on the screen of the display device.

[0103] For example, in some embodiments, Figure 7 As shown, the first extension portion edges of adjacent rows of first extension portions extend in different directions. For example, the first extension portion edge ECA11 and the first extension portion edge ECA12 extend in different directions, but the first extension portion edge ECA11 and the first extension portion edge ECA13 extend in the same direction, forming a structure in which the first extension portion edges are alternately arranged in the second direction, so as to reduce the width of the border area of ​​the display device.

[0104] For example, in some embodiments, Figure 7 As shown, the first expansion portion edges of at least two first expansion portions are arranged in a staggered manner. For example, the first expansion portion edge ECA14 and the first expansion portion edge ECA15 are located in different columns, forming a staggered arrangement structure, thereby forming a smooth corner.

[0105] For example, in some embodiments, as shown in the figure, the plurality of virtual pixel electrodes DP include a first virtual pixel electrode DP11, a first virtual pixel electrode DP12, a first virtual pixel electrode DP13, a first virtual pixel electrode DP14, and a first virtual pixel electrode DP15 located in the Yn1 row, the Yn2 row, the Yn3 row, the Yn4 row, and the Yn5 row, respectively (for example, the first virtual pixel electrode is set in the rightmost column of each row in the figure). The orthographic projection of each first virtual pixel electrode DP on the substrate BS overlaps with the orthographic projection of the first extension portion of the row on the substrate BS. For example, in the Yn5 row, the orthographic projection of the first virtual pixel electrode DP11 on the substrate BS overlaps with the orthographic projection of the first extension portion ECE111 of the row on the substrate BS. In the first direction, the edge of the first extension portion is located between the first virtual pixel electrode and the first substrate edge BSA, that is, the orthographic projection of the edge of the first extension portion on the substrate BS is located between the orthographic projection of the first virtual pixel electrode on the substrate BS and the first substrate edge BSA. For example, in row Yn5, the positive projection of the edge ECA11 of the first extension portion on the substrate BS is between the positive projection of the first virtual pixel electrode DP11 on the substrate BS and the first substrate edge BSA. In the embodiment of the present disclosure, since the first virtual pixel electrode is not electrically connected to the switching element, although the static electricity accumulated at the edge of the first extension portion can generate an electric field between the edge of the first extension portion and the first virtual pixel electrode, the black matrix BM (such as Fig. 9 As shown in the figure, the edge of the first extension portion is shielded so that bright line defects will not occur during the film tearing / ESD test.

[0106] Fig. 8A A schematic diagram of a structure in which a frame area of ​​a display device provided in an embodiment of the present disclosure includes a light-transmitting area; Figure 8B A schematic structural diagram of a frame area including a light-transmitting area in a display device provided in another embodiment of the present disclosure; Figure 8C This is a schematic structural diagram of a pixel electrode layer and a common electrode layer close to a light-transmitting area in a display device provided in an embodiment of the present disclosure.

[0107] For example, in some embodiments, Fig. 8A As shown, the frame area also includes a light-transmitting area TL10, and at least part of the edge of the light-transmitting area TL10 is surrounded by the effective display area. For example, the light-transmitting area TL10 is located at the upper left corner of the effective display area, and the light-transmitting area TL10 is surrounded by the effective display area. An opening KH10 is provided in the light-transmitting area TL10 to allow light to pass through the opening KH10. For example, a front camera can be provided at the opening KH10.

[0108] For example, in some embodiments, Figure 8BAs shown, the light-transmitting area TL20 may also be disposed at the upper edge of the display area, and the edge of the light-transmitting area TL20 except one side of the second frame area is surrounded by the effective display area. For example, the light-transmitting area TL20 is provided with an opening KH20.

[0109] It should be noted that the embodiments of the present disclosure are not limited by the location of the light-transmitting area. Figure 8C A schematic structural diagram of the pixel electrode layer and the common electrode layer at the connection position between the effective display area and the light-transmitting area is shown. Figure 8C Only a partial structure of the connection position between the effective display area and the light-transmitting area is shown.

[0110] For example, in some embodiments, Figure 8C As shown, the plurality of effective pixel electrodes include a plurality of second effective pixel electrodes that are closest to the light-transmitting area TL10 / TL20 and are arranged axially along the light-transmitting area TL10 / TL20. For example, the second effective pixel electrodes EP21 are respectively located in rows Xn1 to Xn9 (the second effective pixel electrode is arranged in the second column from the right side of the same row in the figure). The second effective pixel electrodes EP21 of rows Xn7, Xn8 and Xn9 are located in the same column, while the second effective pixel electrodes EP21 of rows Xn5 and Xn6 are staggered and are located in different columns from the second effective pixel electrodes EP21 of rows Xn7, Xn8 and Xn9. Each of the plurality of second effective pixel electrodes EP21 includes a third pixel electrode edge PA21 and a fourth pixel electrode edge PB21 that are arranged in the first direction and extend in the second direction, and the third pixel electrode edge PA21 is located between the fourth pixel electrode edge PB21 and the light-transmitting area TL10 / TL20 in the first direction. It should be noted that Figure 7 The structure of the second effective pixel electrode EP21 is similar to Figure 4B as well as Figure 4C The first effective pixel electrode EP1 is the same as that in FIG.

[0111] For example, in some embodiments, Figure 8CAs shown, the common electrode layer includes a second extended common electrode ECE21, and the orthographic projection of the second extended common electrode ECE21 on the substrate BS partially overlaps with the orthographic projection of the plurality of second effective pixel electrodes EP21 on the substrate BS. The second extended common electrode ECE21 continues to extend in a direction close to the light-transmitting area TL10 / TL20 compared to the second effective pixel electrode EP21. The second extended common electrode ECE21 includes a second extended portion that exceeds the plurality of second effective pixel electrodes EP21, and the second extended portion includes a plurality of sub-extended portions corresponding to the plurality of second effective pixel electrodes EP21. For example, the plurality of sub-extended portions are respectively located in the same row as a second effective pixel electrode EP21. The plurality of sub-extended portions, for example, include a sub-extended portion ECE211, a sub-extended portion ECE212, a sub-extended portion ECE213, a sub-extended portion ECE214, and a sub-extended portion ECE215, which are respectively located in rows Xn5 to Xn9. It should be noted that sub-extended portions are also provided in rows Xn1 to Xn4 in the figure, which are not listed one by one here.

[0112] For example, in some embodiments, Figure 8C As shown, each of the multiple sub-expansion portions has a first sub-expansion portion edge extending along the second direction, and the first sub-expansion portion edge is located between the light-transmitting area TL10 / TL20 and the third pixel electrode edge PA21 in the first direction. For example, sub-expansion portion ECE211, sub-expansion portion ECE212, sub-expansion portion ECE213, sub-expansion portion ECE214 and sub-expansion portion ECE215 include a first sub-expansion portion edge ECA21, a first sub-expansion portion edge ECA22, a first sub-expansion portion edge ECA23, a first sub-expansion portion edge ECA24 and a first sub-expansion portion edge ECA25, respectively. That is, in the same row, in the first direction, the orthographic projection of the first sub-expansion portion edge on the substrate BS is located between the orthographic projection of the third pixel electrode edge PA21 on the substrate BS and the light-transmitting area TL10 / TL20. In this case, the first sub-expansion portion edge is located outside the effective display area, that is, the first sub-expansion portion edge is located in the portion of the frame area that is closest to the third pixel electrode edge.

[0113] In the above embodiment, by extending the second extended common electrode from the position overlapping with the second effective pixel electrode toward the direction close to the light-transmitting area (that is, extending outside the effective display area), the edge of static electricity accumulation can be changed from Figure 1 The effective display area in the manner shown is expanded outwardly beyond the effective display area, thereby effectively improving the bright line defects on the screen of the display device.

[0114] For example, in some embodiments, Figure 8CAs shown, the extension directions of the first sub-expansion portion edges of two sub-expansion portions adjacently arranged along the circumference of the light-transmitting area TL10 / TL20 are different. For example, the extension directions of the first sub-expansion portion edge ECA21 and the first sub-expansion portion edge ECA22 are different, but the extension directions of the first sub-expansion portion edge ECA21 and the first sub-expansion portion edge ECA23 are the same, forming a structure in which the first sub-expansion portion edges are alternately arranged in the second direction to save arrangement space.

[0115] For example, in some embodiments, Figure 8C As shown, in the second direction, the first sub-expansion portion edges of at least two sub-expansion portions are staggered in the first direction. For example, the first sub-expansion portion edge ECA24 and the first sub-expansion portion edge ECA25 are located in different columns, forming a staggered arrangement structure, thereby forming a smooth arc-shaped joint structure.

[0116] For example, in some embodiments, Figure 8C As shown, the multiple virtual pixel electrodes also include multiple second virtual pixel electrodes located between the second effective pixel electrode EP21 and the light-transmitting area TL10 / TL20 in the first direction (for example, the second virtual pixel electrode is set in the rightmost column of each row in the figure). For example, the multiple second virtual pixel electrodes include a second virtual pixel electrode DP21, a second virtual pixel electrode DP22, a second virtual pixel electrode DP23, a second virtual pixel electrode DP24 and a second virtual pixel electrode DP25, which are respectively located in rows Xn5 to Xn9. The orthographic projections of the multiple second virtual pixel electrodes on the substrate at least partially overlap with the orthographic projections of the multiple sub-expansion parts of the second extension part on the substrate. For example, in row Xn9, the orthographic projection of the second virtual pixel electrode DP21 on the substrate BS overlaps with the orthographic projection of the second extension part ECE211 on the substrate BS.

[0117] For example, in some embodiments, Figure 8C As shown, the edge of the first sub-extension portion of the plurality of sub-extension portions is located between the corresponding second virtual pixel electrode and the light-transmitting area TL10 / TL20. That is to say, the orthographic projection of the edge of the first sub-extension portion on the substrate BS is located between the orthographic projection of the second virtual pixel electrode on the substrate BS and the light-transmitting area TL10 / TL20. For example, in the Xn9 row, the orthographic projection of the edge of the first sub-extension portion ECA21 on the substrate BS is located between the orthographic projection of the second virtual pixel electrode DP21 on the substrate BS and the light-transmitting area TL10 / TL20. In the disclosed embodiment, since the second virtual pixel electrode is not electrically connected to the switching element, although the static electricity accumulated at the edge of the first sub-extension portion can generate an electric field between the edge of the first extension portion and the first virtual pixel electrode, the edge of the first sub-extension portion is shielded by the black matrix BM, so that poor bright lines will not occur during the film tearing / ESD test.

[0118] For example, the second extended common electrode ECE21 is Figure 5 One of the sub-common electrodes in the plurality of sub-common electrodes TE shown. Fig. 8A As shown, when the edge light-transmitting area TL10 is located at the upper left corner of the effective display area and the light-transmitting area TL10 is surrounded by the effective display area, the first extended common electrode located at the upper left corner of the effective display area also serves as the second extended common electrode. At this time, the first extended common electrode includes the sides close to the first border area and the second border area and the corner area connecting the first border area and the second border area, and also includes the area surrounding the light-transmitting area TL10.

[0119] For example, the second extended common electrode is an integrated structure.

[0120] For example, the absolute value of the operating voltage of the second extended common electrode is less than or equal to 0.2V.

[0121] For example, one of the array substrate and the opposite substrate includes a black matrix layer, and the black matrix layer shields the second extended portion of the second extended common electrode.

[0122] For example, in some embodiments, Figure 8C The region where the second virtual pixel electrode DP21 is located may not be provided with a switching element, that is, the region where the orthographic projection of the second virtual pixel electrode DP21 on the substrate BS is located may not be provided with a switching element, so that the second virtual pixel electrode DP21 is not used for display.

[0123] Fig. 9 A schematic cross-sectional view of a portion of the structure in the first frame area or the third frame area of ​​the display device provided in an embodiment of the present disclosure.

[0124] For example, Fig. 9 As shown, the display device has a gate driving circuit GD in the first frame area or the third frame area. For example, the gate driving circuit is GOA (Gate Driver on Array).

[0125] For example, Fig. 9As shown, the black matrix layer BM blocks the portion of the first extended common electrode ECE1 that exceeds the first effective pixel electrode EP1 (i.e., the above-mentioned first extended portion EC1). In some embodiments, the display device further includes a sealant SF connecting the array substrate ARS and the opposing substrate OPS, and the black matrix layer BM has a groove BMG at the sealant SF, and the thickness of the groove BMG is equal to the thickness of the black matrix layer BM, that is, the groove BMG is a through groove that runs through the black matrix layer BM. By providing the groove BMG in the black matrix layer BM, the ESD resistance of the display device can be improved. In some embodiments, the positive projection of the groove BMG on the substrate BS is a closed or non-closed annular structure surrounding the effective display area. In some embodiments, the groove BMG is filled with a filter material. For example, the filter material is a blue filter material. By filling the filter material in the groove BMG, light leakage can be avoided.

[0126] In some embodiments, Fig. 9 As shown, the display device further includes a polarizer Pol located on the side of the opposing substrate OPS away from the array substrate ARS. For example, the resistance of the polarizer Pol does not exceed 3*10 9 Ω. The use of low-resistance polarizers can help reduce static electricity accumulation during film tearing / ESD testing, thereby improving bright line defects.

[0127] In some embodiments, the display device further includes a ground line on the substrate BS. Fig.10 A schematic top view of a grounding wire in a display device provided in an embodiment of the present disclosure. Fig.10 As shown, the ground line GND surrounds the effective display area, and the line width of the ground line GND is less than or equal to 50 microns. The narrow width of the ground line GND is conducive to realizing a narrow frame design. Fig.10 As shown, the two connection terminals of the ground line GND are both located in the fourth frame area, and a panel binding pin PBP is also provided in the fourth frame area.

[0128] The embodiment of the present disclosure also provides an array substrate. Fig.11A A partial cross-sectional schematic diagram of a part of the structure of an array substrate provided in an embodiment of the present disclosure; Fig. 11B for Fig.11A A partial enlarged schematic diagram of Fig.11A and Fig. 11BAs shown, the array substrate ARS has an effective display area and a frame area outside the effective display area. The array substrate ARS includes a substrate BS and a pixel electrode layer PEL located on the substrate BS. The pixel electrode layer PEL includes a plurality of effective pixel electrodes EP located in the effective display area. The outermost effective pixel electrode among the plurality of effective pixel electrodes EP includes a first effective pixel electrode EP1. The first effective pixel electrode EP1 includes a first pixel electrode edge PA and a second pixel electrode edge PB arranged in a first direction and extending in a second direction different from the first direction. The first pixel electrode edge PA and the second pixel electrode edge PB are the farthest edges of the first effective pixel electrode EP1 in the first direction, and the first pixel electrode edge PA is located in the first direction. between the second pixel electrode edge PB and the border area; the array substrate ARS also includes a common electrode layer CEL, the common electrode layer CEL includes a block-shaped first extended common electrode ECE1, the orthographic projection of the first extended common electrode ECE1 on the substrate BS overlaps with the orthographic projection of the first effective pixel electrode EP1 on the substrate BS, the first extended common electrode ECE1 includes a first extended portion EC1 that exceeds the first effective pixel electrode EP1, the first extended portion EC1 has a first extended portion edge CEA extending along the second direction, the edge of the substrate BS that is closest to the first extended portion edge CEA and extending along the second direction is the first substrate edge BSA, and the first extended portion edge CEA is located between the first substrate edge BSA and the first pixel electrode edge PA in the first direction.

[0129] In the embodiment of the present disclosure, by extending the first extended common electrode ECE1 from the position overlapping with the first effective pixel electrode EP1 to the frame area (that is, extending outside the effective display area), the edge of static electricity accumulation can be changed from Figure 1 The effective display area in the manner shown is expanded outwardly beyond the effective display area, thereby effectively improving the bright line defects on the screen of the display device.

[0130] In at least one embodiment, the absolute value of the working voltage of the first extended common electrode ECE1 is less than or equal to 0.2 V. In this way, vertical block defects caused by an excessively large voltage difference between the first extended common electrode ECE1 and the effective pixel electrode EP can be avoided.

[0131] In some embodiments, the common electrode layer CEL includes a plurality of spaced-apart sub-common electrodes, which are reused as touch electrodes, and the first extended common electrode ECE1 is one of the plurality of sub-common electrodes. For example, the first extended common electrode ECE1 is an integrated structure.

[0132] In at least one embodiment, the ratio of the area of ​​the first extended portion EC1 to the area of ​​the first extended common electrode ECE1 does not exceed 1% to avoid affecting the touch performance.

[0133] In some embodiments, the array substrate includes a first frame area, a second frame area, a third frame area and a fourth frame area arranged in sequence in a clockwise direction, and the first extended common electrode ECE1 may be located in at least one of the first frame area to the fourth frame area.

[0134] In some embodiments, the first expansion portion EC1 is located in the first frame area or the third frame area; and in the first direction, a ratio of a length of the first expansion portion EC1 to a length of the first effective pixel electrode EP1 is greater than or equal to 1 and less than or equal to 2.

[0135] In at least one embodiment, the pixel electrode layer PEL further includes a plurality of virtual pixel electrodes spaced apart from the plurality of effective pixel electrodes EP, and the plurality of virtual pixel electrodes are located in the border area. For example, the plurality of virtual pixel electrodes include a first virtual pixel electrode overlapping the first extended common electrode. In some embodiments, the common electrode CEL further includes a second extended common electrode, and the plurality of virtual pixel electrodes further include a second virtual pixel electrode overlapping the second extended common electrode.

[0136] The same components in the above embodiment of the array substrate and in the above embodiment of the display device may be arranged in the same manner, and the repeated parts will not be described again.

[0137] Furthermore, the embodiments of the present disclosure and the features therein may be combined with each other without conflict.

[0138] The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A display device having an effective display area and a frame area outside the effective display area and comprising an array substrate and an opposing substrate arranged opposite to each other, wherein: The array substrate comprises a substrate and a pixel electrode layer located on the substrate, the pixel electrode layer comprises a plurality of effective pixel electrodes located in the effective display area, the outermost effective pixel electrode among the plurality of effective pixel electrodes comprises a first effective pixel electrode, the first effective pixel electrode comprises a first pixel electrode edge and a second pixel electrode edge arranged along a first direction and extending along a second direction, and the first pixel electrode edge is located between the second pixel electrode edge and the border area in the first direction, and the first direction and the second direction intersect each other; One of the array substrate and the counter substrate comprises a common electrode layer, the common electrode layer comprises a block-shaped first extended common electrode, an orthographic projection of the first extended common electrode on the substrate partially overlaps with an orthographic projection of the first effective pixel electrode on the substrate, the first extended common electrode comprises a first extended portion extending beyond the first effective pixel electrode, the first extended portion has a first extended portion edge extending along the second direction, the substrate has a first substrate edge extending along the second direction, and the first extended portion edge is located between the first substrate edge and the first pixel electrode edge in the first direction; The pixel electrode layer further includes a plurality of virtual pixel electrodes spaced apart from the plurality of effective pixel electrodes, and the plurality of virtual pixel electrodes are located in the frame area; The frame area further includes a light-transmitting area, at least a portion of the edge of the light-transmitting area is surrounded by the effective display area, and an opening is provided in the light-transmitting area, wherein: The plurality of effective pixel electrodes include a plurality of second effective pixel electrodes that are closest to the light-transmitting area and arranged along the circumference of the light-transmitting area, each of the plurality of second effective pixel electrodes includes a third pixel electrode edge and a fourth pixel electrode edge that are arranged along the first direction and extend along the second direction, and the third pixel electrode edge is located between the fourth pixel electrode edge and the light-transmitting area in the first direction; The common electrode layer includes a second extended common electrode, the orthographic projection of the second extended common electrode on the substrate partially overlaps with the orthographic projection of each of the plurality of second effective pixel electrodes on the substrate, the second extended common electrode includes a second extended portion extending beyond each of the plurality of second effective pixel electrodes, the second extended portion includes a plurality of sub-extended portions arranged corresponding to the plurality of second effective pixel electrodes, Each of the plurality of sub-expansion portions has a first sub-expansion portion edge extending along the second direction, and the first sub-expansion portion edge is located between the light-transmitting area and the edge of the third pixel electrode in the first direction; The common electrode layer includes a plurality of spaced-apart sub-common electrodes, the plurality of sub-common electrodes are reused as touch electrodes, and the first extended common electrode and the second extended common electrode are respectively one of the plurality of sub-common electrodes.

2. The display device according to claim 1, wherein: In the first direction, a length of the first extension portion is greater than or equal to 1 / 3 of a length of the first effective pixel electrode.

3. The display device according to claim 1, wherein: The border area includes a first border area, a second border area, a third border area and a fourth border area arranged in sequence in a clockwise direction; the array substrate has an exceeding portion exceeding the opposing substrate, and the exceeding portion is located in the fourth border area; the first extension portion is located in at least one of the first border area to the fourth border area.

4. The display device according to claim 3, wherein: The first extension portion is located in the first frame area and / or the third frame area; in the first direction, a ratio of a length of the first extension portion to a length of the first effective pixel electrode is greater than or equal to 1.

5. The display device according to claim 3, wherein: The first extension portion is located in the second border area and / or the fourth border area; in the first direction, the ratio of the length of the first extension portion to the length of the first effective pixel electrode is greater than or equal to 1 / 3 and less than or equal to 1 / 2.

6. The display device according to claim 1, wherein: The plurality of virtual pixel electrodes include a first virtual pixel electrode, an orthographic projection of the first virtual pixel electrode on the substrate at least partially overlaps with an orthographic projection of the first extension portion on the substrate.

7. The display device according to claim 6, wherein: In the first direction, the edge of the first extension portion is located between the first virtual pixel electrode and the edge of the first substrate.

8. The display device according to claim 7, wherein: The edge of the first virtual pixel electrode that is closest to the first extension portion and extends along the second direction is the first virtual pixel electrode edge, and the first virtual pixel electrode edge includes a first end and a second end; in the first direction, the distances from the first end and the second end to the edge of the first extension portion are not equal.

9. The display device according to claim 7, wherein: The edge of the first virtual pixel electrode that is closest to the first extension portion and extends along the second direction is the first virtual pixel electrode edge, and the first virtual pixel electrode edge includes a first end, a second end, and a connecting line located between the first end and the second end, and the connecting line is parallel to the edge of the first extension portion.

10. The display device according to claim 1, wherein: The edges of the first sub-expansion portions of two sub-expansion portions adjacent to each other along the circumference of the light-transmitting area have different extension directions.

11. The display device according to claim 1, wherein: In the second direction, the edges of the first sub-expansion portions of at least two of the sub-expansion portions are staggered in the first direction.

12. The display device according to claim 1, wherein: The plurality of virtual pixel electrodes further include a plurality of second virtual pixel electrodes located between the second effective pixel electrode and the light-transmitting area in the first direction, The orthographic projections of the plurality of second virtual pixel electrodes on the substrate at least partially overlap with the orthographic projections of the plurality of sub-expansion portions of the second expansion portion on the substrate.

13. The display device according to claim 12, wherein: An edge of a first sub-expansion portion of the plurality of sub-expansion portions is located between the corresponding second virtual pixel electrode and the light-transmitting area.

14. The display device according to any one of claims 1 to 13, wherein: The array substrate further comprises a plurality of switch elements which are located on the substrate and are spaced apart from each other. The plurality of switch elements comprise a plurality of first switch elements which are electrically connected to the plurality of effective pixel electrodes respectively.

15. The display device according to claim 14, wherein: The plurality of switching elements further include a plurality of second switching elements, and orthographic projections of the plurality of second switching elements on the substrate at least partially overlap with orthographic projections of the plurality of virtual pixel electrodes on the substrate, respectively.

16. The display device according to claim 1, wherein: The first extended common electrode and the second extended common electrode are respectively an integrated structure.

17. The display device according to any one of claims 10 to 13, wherein: An absolute value of an operating voltage of the first extended common electrode and the second extended common electrode is less than or equal to 0.2V.

18. The display device according to any one of claims 1 to 9, wherein: A ratio of an area of ​​the first extended portion to an area of ​​the first extended common electrode does not exceed 1%.

19. The display device according to any one of claims 1 to 9, further comprising a ground line surrounding the effective display area, wherein: The line width of the ground line is less than or equal to 50 microns.

20. The display device according to any one of claims 10 to 13, wherein: One of the array substrate and the counter substrate includes a black matrix layer, and the black matrix layer shields the first extended portion of the first extended common electrode and the second extended portion of the second extended public electrode.

21. The display device according to claim 20, further comprising a ring-shaped sealant connecting the array substrate and the counter substrate, wherein: The black matrix layer has an annular groove at the sealant.

22. The display device according to claim 21, wherein: The groove is filled with a filter material.

23. An array substrate, comprising an effective display area and a frame area outside the effective display area, wherein: The array substrate comprises a substrate and a pixel electrode layer located on the substrate, the pixel electrode layer comprises a plurality of effective pixel electrodes located in the effective display area, the outermost effective pixel electrode among the plurality of effective pixel electrodes comprises a first effective pixel electrode, the first effective pixel electrode comprises a first pixel electrode edge and a second pixel electrode edge arranged along a first direction and extending along a direction different from a second direction, and the first pixel electrode edge is located between the second pixel electrode edge and the border area in the first direction, and the first direction and the second direction intersect each other; The array substrate further comprises a common electrode layer, the common electrode layer comprises a first block-shaped extended common electrode, an orthographic projection of the first extended common electrode on the substrate partially overlaps with an orthographic projection of the first effective pixel electrode on the substrate, the first extended common electrode comprises a first extended portion extending beyond the first effective pixel electrode, the first extended portion has a first extended portion edge extending along the second direction, the substrate has a first substrate edge extending along the second direction, and the first extended portion edge is located between the first substrate edge and the first pixel electrode edge in the first direction; The pixel electrode layer further includes a plurality of virtual pixel electrodes spaced apart from the plurality of effective pixel electrodes, and the plurality of virtual pixel electrodes are located in the frame area; The frame area further includes a light-transmitting area, at least a portion of the edge of the light-transmitting area is surrounded by the effective display area, wherein: The plurality of effective pixel electrodes include a plurality of second effective pixel electrodes that are closest to the light-transmitting area and arranged along the circumference of the light-transmitting area, each of the plurality of second effective pixel electrodes includes a third pixel electrode edge and a fourth pixel electrode edge that are arranged along the first direction and extend along the second direction, and the third pixel electrode edge is located between the fourth pixel electrode edge and the light-transmitting area in the first direction; The common electrode layer includes a second extended common electrode, the orthographic projection of the second extended common electrode on the substrate partially overlaps with the orthographic projection of each of the plurality of second effective pixel electrodes on the substrate, the second extended common electrode includes a second extended portion extending beyond each of the plurality of second effective pixel electrodes, the second extended portion includes a plurality of sub-extended portions arranged corresponding to the plurality of second effective pixel electrodes, Each of the plurality of sub-expansion portions has a first sub-expansion portion edge extending along the second direction, and the first sub-expansion portion edge is located between the light-transmitting area and the edge of the third pixel electrode in the first direction; The common electrode layer includes a plurality of spaced-apart sub-common electrodes, the plurality of sub-common electrodes are reused as touch electrodes, and the first extended common electrode and the second extended common electrode are respectively one of the plurality of sub-common electrodes.

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