Display panel and display device

Abstract

The application discloses a display panel and a display device to avoid the accumulation of static electricity in the light shielding layer and improve the alignment accuracy of the array substrate and the opposite substrate. The display panel comprises an array substrate, an opposite substrate and a liquid crystal layer. The opposite substrate comprises a light shielding layer. The light shielding layer comprises at least one groove. The display panel further comprises at least one positioning pattern. The positioning pattern comprises at least one mark pattern, a plurality of first positioning patterns and a plurality of second positioning patterns. The orthogonal projection of the positioning pattern on the opposite substrate is located on the side of the at least one groove away from the display area. The plurality of first positioning patterns are arranged in sequence along the extension direction of the groove. The plurality of first positioning patterns are located on the side of the mark pattern in the extension direction of the groove. The plurality of second positioning patterns comprise a plurality of second positioning patterns arranged in sequence in the extension direction of the groove. The orthogonal projection of the second positioning pattern on the array substrate overlaps with the first pattern, and the orthogonal projection of the light shielding layer on the array substrate covers the mark pattern.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] With the widespread use of electronic products in daily life, while product specifications are constantly being iterated and improved, customers are also paying more attention to product quality. In existing LCD display panels, the black matrix is ​​prone to accumulating static electricity, resulting in a greenish tint in the L0 grayscale. Alignment deviations between the array substrate and the color filter substrate can also affect the display effect. Summary of the Invention

[0003] This application provides a display panel and display device to avoid the accumulation of static electricity in the light-shielding layer and to improve the alignment accuracy of the array substrate and the opposing substrate.

[0004] An embodiment of this application provides a display panel, which includes: an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer located between the array substrate and the counter substrate;

[0005] The display panel includes a display area and a surrounding area that surrounds the display area;

[0006] The opposing substrate includes a light-shielding layer; the light-shielding layer includes at least one groove located in the peripheral region;

[0007] The display panel also includes at least one positioning pattern located in the peripheral area; the positioning pattern includes: at least one marking pattern and a plurality of first positioning patterns located in the array substrate, and a plurality of second positioning patterns located in the light-shielding layer;

[0008] The positioning pattern is projected onto the opposite substrate on the side of at least one groove away from the display area;

[0009] Multiple first positioning patterns are arranged sequentially along the extension direction of the groove; the multiple first positioning patterns are located on one side of the marking pattern in the extension direction of the groove;

[0010] Multiple second positioning patterns are arranged sequentially in the extending direction of the groove; the second positioning patterns overlap with the first pattern in the orthographic projection of the array substrate, and the light-shielding layer covers the marking pattern in the orthographic projection of the array substrate.

[0011] In some embodiments, in an arrangement direction perpendicular to the plurality of first positioning patterns, a portion of the first positioning patterns has a first length, and the remaining portion of the first positioning patterns has a second length. The first length is greater than the second length, and the first positioning patterns of the first length and the first positioning patterns of the second length are arranged alternately.

[0012] The light-shielding layer also includes multiple cutouts, with the second positioning pattern located between two adjacent cutouts; in the direction perpendicular to the arrangement of the multiple cutouts, the lengths of the multiple cutouts are equal;

[0013] Multiple first positioning patterns are adjacent to marking patterns on both sides of the groove in the extension direction.

[0014] In some embodiments, the cutout portion is connected to the groove.

[0015] In some embodiments, at least one groove includes: a first groove and a second groove;

[0016] The first recess surrounds the display area, and the second recess is located on the side of the first recess away from the display area;

[0017] The positioning pattern is projected onto the opposite substrate on the side of the second groove furthest from the display area.

[0018] In some embodiments, the peripheral area includes a binding area located on one side of the display area in a first direction;

[0019] The second groove includes at least three portions: a first portion, a second portion, and a third portion; the second portion, the first portion, and the third portion are interconnected.

[0020] The first part is located on the side of the display area away from the binding area, and the second and third parts are located on both sides of the display area in the second direction; the first direction and the second direction intersect.

[0021] The second groove includes at least: a first part located in the third peripheral area, a second part located in the second peripheral area, and a third part located in the fourth peripheral area; the first part, the second part, and the third part are interconnected.

[0022] In a direction perpendicular to the plane of the display panel, the orthographic projections of the first, second, and third portions on the side away from the display area all include the orthographic projection of the pattern.

[0023] In some embodiments, the display panel further includes: a conductive adhesive in contact with the array substrate; the conductive adhesive is located between the display area and the bonding area;

[0024] The light-shielding layer is projected onto the side of the conductive adhesive away from the bonding area in the array substrate;

[0025] The second groove also includes a fourth part; the fourth part is located between the binding area and the display area, and the fourth part is connected to the second part and / or the third part.

[0026] In some embodiments, in the first direction, the maximum distance between the center of the conductive adhesive in the orthographic projection of the array substrate and the fourth portion is greater than or equal to 500 micrometers.

[0027] In some embodiments, the end of the fourth portion away from the second or third portion extends to the edge of the light-shielding layer;

[0028] In the second direction, the distance between the end of the fourth portion away from the second or third portion and the center of the conductive adhesive in the orthogonal projection of the array substrate is greater than or equal to 500 micrometers.

[0029] In some embodiments, the opposing substrate further includes: a color resist structure;

[0030] The color resist structure includes a portion located within the groove and a portion located on the side of the light-shielding layer facing the array substrate;

[0031] At least part of the color resist structure also includes a portion located within the cutout section.

[0032] In some embodiments, the distance between the edge of the color resist structure and the groove is greater than or equal to 5 micrometers.

[0033] In some embodiments, the array substrate further includes a common electrode line located in the peripheral region; the first groove, when projected onto the substrate, falls within the common electrode line.

[0034] In some embodiments, the peripheral area includes a binding area; a first alignment mark and a second alignment mark; the first alignment mark and the second alignment mark are located in the peripheral area of ​​the display area on the side away from the binding area;

[0035] The array substrate includes a first alignment mark, and the light-shielding layer includes a second alignment mark; the second alignment mark is an opening that penetrates the light-shielding layer, and the second alignment mark is surrounded by a non-opening area of ​​the light-shielding layer.

[0036] The first alignment mark and the second alignment mark correspond one-to-one;

[0037] The shape of the first alignment mark is the same as that of the second alignment mark, and the orthographic projection of the first alignment mark onto the light-shielding layer covers the second alignment mark.

[0038] In some embodiments, in a direction perpendicular to the display panel, the orthographic projections of the first alignment mark and the second alignment mark are located on the side of the second recess opposite to the display area;

[0039] Both the array substrate and the opposing substrate include a corner region, and the first alignment mark and the second alignment mark are located in the corner region.

[0040] In some embodiments, the array substrate includes a first substrate and the opposing substrate includes a second substrate.

[0041] Both the first substrate and the second substrate have corners at their edges, and the corners on the side of the first substrate and the second substrate away from the bonding area are not right angles.

[0042] This application provides a display device, which includes a display panel provided in this application embodiment.

[0043] The display panel and display device provided in this application embodiment have at least one groove in the peripheral area of ​​the light-shielding layer, which can prevent static electricity from being conducted into the display panel along the light-shielding layer and prevent the display panel from turning green in the L0 grayscale. The positioning pattern consists of a first positioning pattern and a marking pattern included in the array substrate and a second positioning pattern included in the opposing substrate. Therefore, the alignment accuracy between the array substrate and the opposing substrate can be determined and adjusted based on the first positioning pattern, the marking pattern, and the second positioning pattern, thereby improving the alignment accuracy between the array substrate and the opposing substrate. Furthermore, the positioning pattern is located on the side of the groove away from the display area, thereby preventing light leakage in the peripheral area of ​​the display panel caused by the setting of the second positioning pattern. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0046] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0047] Figure 3 An embodiment provided in this application Figure 2 A magnified structural diagram of region E1 in the middle;

[0048] Figure 4 An embodiment provided in this application Figure 2 The intention behind the enlarged structure in the E2 region;

[0049] Figure 5 An embodiment provided in this application Figure 2 A magnified structural diagram of the E3 region;

[0050] Figure 6 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0051] Figure 7 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0052] Figure 8This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0053] Figure 9 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0054] Figure 10 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0055] Figure 11 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0056] Figure 12 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0057] Figure 13 A schematic diagram of the structure of a display panel provided for related technologies;

[0058] Figure 14 A schematic diagram of the structure of a display device provided for related technologies;

[0059] Figure 15 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0060] Figure 16 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0061] Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0063] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0064] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of this application. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0065] This application provides a display panel, such as... Figures 1-5 As shown, the display panel includes: an array substrate 1 and a counter substrate 2 disposed opposite to each other, and a liquid crystal layer 3 located between the array substrate 1 and the counter substrate 2;

[0066] The display panel includes a display area AA and a peripheral area NA surrounding the display area AA;

[0067] The opposing substrate 2 includes a light-shielding layer 202; the light-shielding layer 202 includes at least one groove 4 located in the peripheral region NA;

[0068] The display panel also includes at least one positioning pattern 5 located in the peripheral area NA; the positioning pattern 5 includes: at least one marking pattern 502 and a plurality of first positioning patterns 501 located in the array substrate 1, and a plurality of second positioning patterns 503 located in the light shielding layer 202.

[0069] The orthographic projection of the positioning pattern 5 onto the opposing substrate 2 is located on the side of at least one groove 4 away from the display area AA;

[0070] Multiple first positioning patterns 501 are arranged sequentially along the extension direction of the groove 4; the multiple first positioning patterns 501 are located on one side of the marking pattern 502 in the extension direction of the groove 4;

[0071] Multiple second positioning patterns 503 are arranged sequentially in the extending direction of the groove 4; the second positioning patterns 503 overlap with the first pattern in the orthographic projection of the array substrate 1, and the light-shielding layer 202 covers the marking pattern 502 in the orthographic projection of the array substrate 1.

[0072] The display panel provided in this application embodiment has at least one groove in the peripheral area of ​​the light-shielding layer, which can prevent static electricity from being conducted into the display panel along the light-shielding layer and prevent the display panel from turning green in the L0 grayscale. The positioning pattern consists of a first positioning pattern and a marking pattern included in the array substrate and a second positioning pattern included in the opposing substrate. Therefore, the alignment accuracy between the array substrate and the opposing substrate can be determined and adjusted based on the first positioning pattern, the marking pattern, and the second positioning pattern, thereby improving the alignment accuracy between the array substrate and the opposing substrate. Furthermore, the positioning pattern is located on the side of the groove away from the display area, thereby preventing light leakage in the peripheral area of ​​the display panel caused by the setting of the second positioning pattern.

[0073] It should be noted that, Figures 3-5 They are respectively Figure 2 Enlarged schematic diagram of regions E1, E2, and E3.

[0074] In some embodiments, such as Figures 3-5 As shown, the light-shielding layer 202 also includes a plurality of cutout portions 6, and the second positioning pattern 503 is located between two adjacent cutout portions 6;

[0075] The orthographic projection of the cutout portion 6 onto the array substrate 1 does not overlap with a marking pattern 502 and a first positioning pattern 501, but at least a portion of the orthographic projection of the cutout portion 6 onto the array substrate 1 overlaps with the area between two adjacent first positioning patterns 501.

[0076] In some embodiments, such as Figures 3-5 As shown, the orthographic projection of the partially cut-out portion 6 onto the array substrate 1 also overlaps with the area between the first positioning pattern 501 and the marking pattern 502.

[0077] The display panel provided in this application embodiment has multiple cutouts formed in the light-shielding layer, and the area between the cutouts is a second positioning pattern. Therefore, when the array substrate and the opposing substrate are aligned, the alignment accuracy between the array substrate and the opposing substrate can be determined based on the overlap relationship between the cutouts, the marking pattern, and the first positioning pattern. If the cutouts expose the marking pattern and / or the first positioning pattern, there is a deviation in the alignment between the array substrate and the opposing substrate; if the cutouts do not expose the marking pattern and the first positioning pattern, the alignment accuracy between the array substrate and the opposing substrate meets the requirements.

[0078] In some embodiments, such as Figures 3-5 As shown, the hollowed-out part 6 is connected to the groove 4. This reduces the design and manufacturing difficulty of the hollowed-out part.

[0079] In some embodiments, such as Figure 3As shown, in the arrangement direction perpendicular to the plurality of first positioning patterns 501, a portion of the first positioning patterns 501 have a length of a first length h5, and the remaining portion of the first positioning patterns 501 have a length of a second length h4. The first length h5 is greater than the second length h4, and the first positioning patterns 501 with the first length h5 and the first positioning patterns 501 with the second length h4 are arranged alternately.

[0080] In the direction perpendicular to the arrangement of the multiple hollowed-out portions 6, the lengths of the multiple hollowed-out portions 6 are equal, and the length of the hollowed-out portion 6 is less than the second length h4.

[0081] In some embodiments, such as Figures 3-5 As shown, multiple first positioning patterns 501 are adjacent to marking patterns 502 on both sides of the extension direction of the groove 4.

[0082] In some embodiments, the width of the groove is greater than or equal to 10 micrometers and less than or equal to 30 micrometers in the direction perpendicular to the extension of the groove.

[0083] In some embodiments, such as Figure 2 As shown, at least one groove 4 includes: a first groove 401 and a second groove 402;

[0084] The first groove 401 surrounds the display area AA, and the second groove 402 is located on the side of the first groove 401 away from the display area AA;

[0085] The orthographic projection of the positioning pattern 5 onto the opposing substrate 2 is located on the side of the second groove 402 away from the display area AA.

[0086] The display panel provided in this application embodiment includes two grooves, which can further prevent static electricity from being introduced into the interior of the display panel along the light-shielding layer.

[0087] In some embodiments, such as Figure 2 As shown, the display panel includes multiple positioning patterns 5.

[0088] In some embodiments, such as Figure 2 As shown, the size of the array substrate 1 is larger than the size of the opposing substrate 2;

[0089] The peripheral area NA includes the binding area NA-1 located on the side of the display area AA in the first direction Y;

[0090] The projection of the opposing substrate 2 onto the array substrate 1 does not overlap with the bonding area NA-1; the edges of the array substrate 1 and the opposing substrate 2 on the side of the display area AA away from the bonding area NA-1 in the first direction Y coincide, and the edge of the opposing substrate 2 on the side of the display area AA facing the bonding area NA-1 in the first direction Y is located between the display area AA and the bonding area NA-1.

[0091] The second groove 402 includes at least a first portion 4021, a second portion 4022, and a third portion 4023; the second portion 4022, the first portion 4021, and the third portion 4023 are interconnected.

[0092] The first part 4021 is located on the side of the display area AA away from the binding area NA-1, the second part 4022 and the third part 4023 are located on both sides of the display area AA in the second direction X; the first direction Y intersects with the second direction X; Figure 2 The example used is that the first direction Y is perpendicular to the second direction X.

[0093] In a direction perpendicular to the plane of the display panel, the orthographic projections of the first part 4021, the second part 4022, and the third part 4023 all include the orthographic projection of the positioning pattern 5 on the side away from the display area AA.

[0094] In some embodiments, such as Figures 3-5 As shown, the display panel includes multiple marking patterns 502; the multiple marking patterns 502 include: a first marking pattern 5021, a second marking pattern 5022, a third marking pattern 5023, and a fourth marking pattern 5024;

[0095] A positioning mark 12 is formed by a plurality of first positioning patterns 501 corresponding to a positioning pattern 5 and marking patterns 502 located on both sides of the plurality of first positioning patterns 501 respectively.

[0096] When the display panel includes multiple positioning patterns 5, the multiple positioning patterns 5 include multiple positioning marks 12;

[0097] The plurality of positioning marks 12 include: a plurality of first positioning marks 1201, a plurality of second positioning marks 1202, and a plurality of third positioning marks 1203;

[0098] The marking pattern 502 in the first positioning mark 1201 is the first marking pattern 5021 located on both sides of the plurality of first positioning patterns 501 respectively;

[0099] The marking pattern 502 in the second positioning mark 1202 includes: a second marking pattern 5022 located on both sides of the plurality of first positioning patterns 501 respectively, and a third marking pattern 5023 located on the side of one of the second marking patterns 5022 away from the plurality of first positioning patterns 501 in the arrangement direction of the plurality of first positioning patterns 501.

[0100] The marking pattern 502 in the third positioning mark 1203 includes: a second marking pattern 5022 located on both sides of the plurality of first positioning patterns 501 respectively, and a fourth marking pattern 5024 located on the side of one of the second marking patterns 5022 away from the plurality of first positioning patterns 501 in the arrangement direction of the plurality of first positioning patterns 501.

[0101] In a direction perpendicular to the plane of the display panel, the positioning mark 12 on the side of the first part 4021 that is away from the display area AA is the first positioning mark 1201 and the third positioning mark 1203, and the positioning mark 12 on the side of the second part 4022 or the third part 4023 that is away from the display area AA is the first positioning mark 1201 and the second positioning mark 1202.

[0102] In some embodiments, such as Figures 3-5 As shown, the first marking pattern 5021 is shaped like a "-", that is, the first marking pattern 5021 is a strip extending along the arrangement direction of the plurality of first positioning patterns 501; the second marking pattern 5022 is shaped like a "+"; the third marking pattern 5023 is shaped like a "Y"; and the fourth marking pattern 5024 is shaped like an "X".

[0103] In some embodiments, such as Figure 6 As shown, the array substrate 1 includes: a first substrate 101, a first conductive layer 102 located on the side of the first substrate 101 facing the liquid crystal layer 3, and a second conductive layer 110 located on the side of the first conductive layer 102 away from the first substrate 101.

[0104] Specifically, the array substrate includes multiple thin-film transistors (TFTs), each TFT including an active layer 13, a gate G, a source S, and a drain D; the first conductive layer 102 includes a gate G, and the second conductive layer 110 includes a source S and a drain D;

[0105] The active layer 13 is located between the first substrate 101 and the first conductive layer 102.

[0106] In some embodiments, the first conductive layer or the second conductive layer includes a first positioning pattern and a marking pattern.

[0107] In some embodiments, such as Figure 6As shown, the array substrate 1 includes: a first transparent conductive layer 103 located on the side of the second conductive layer 110 away from the first substrate 101, a second transparent conductive layer 104 located on the side of the first transparent conductive layer 103 away from the first substrate 101, a buffer layer 105 located between the first substrate 101 and the active layer 13, a gate insulating layer 106 located between the active layer 13 and the first conductive layer 102, an interlayer insulating layer 107 located between the first conductive layer 102 and the second conductive layer 110, a passivation layer 108 located between the second conductive layer 110 and the first transparent conductive layer 103, and a planarization layer 109 located between the first transparent conductive layer 103 and the second transparent conductive layer 104.

[0108] In some embodiments, such as Figure 6 As shown, the first transparent conductive layer 103 includes a common electrode 15, and the second transparent conductive layer 104 includes a pixel electrode 14.

[0109] Alternatively, in some embodiments, the first transparent conductive layer may include a pixel electrode, and the second transparent conductive layer may include a common electrode.

[0110] In some embodiments, such as Figure 7 , Figure 8 , Figure 9 As shown, the opposing substrate 2 also includes: a color resist structure 10;

[0111] The color resist structure 10 includes a portion located within the groove 4 and a portion located on the side of the light-shielding layer 202 facing the array substrate 1.

[0112] At least part of the color resist structure 10 also includes a portion located within the cutout portion 6.

[0113] The color resist structure covers the groove and the hollow portion, and the color resist structure also includes a portion extending outside the groove and the hollow portion and covering a light-shielding layer. The display panel provided in this application embodiment, by covering the groove and the hollow portion with the color resist structure, can reduce the light transmittance of the groove and the hollow portion, thereby avoiding light leakage at the groove and the hollow portion and affecting the display effect of the color resist structure.

[0114] In some embodiments, the color resist structure is a blue color resist.

[0115] The display panel provided in this application embodiment has a blue color resist structure. Since the blue color resist has a small amount of light transmission, it can improve the light-shielding effect of the color resist structure and further avoid light leakage in the groove and hollow part, which would affect the display effect of the color resist structure.

[0116] In some embodiments, such as Figure 8 , Figure 9 As shown, the distance h1 between the edge of the color resist structure 10 and the groove 4 is greater than or equal to 5 micrometers.

[0117] That is, the edge of the color resist structure overlaps with the light-shielding layer, and the distance between the edge of the color resist structure and the groove is greater than or equal to 5 micrometers. This can avoid light leakage caused by the color resist structure not being able to completely cover the groove due to misalignment.

[0118] In some embodiments, for the portion where the cutout connects to the groove, the distance between the edge of the color resist structure and the edge of the cutout is greater than or equal to 5 micrometers.

[0119] In some embodiments, such as Figure 7 , Figure 8 , Figure 9 As shown, the color resist structure 10 includes a first color resist structure 1001 and a second color resist structure 1002. The first color resist structure 1001 covers the first groove 401, and the second color resist structure 1002 covers the second groove 402 and the hollow portion 6.

[0120] In some embodiments, such as Figure 7 As shown, the orthographic projection of the second color resist structure 1002 onto the array substrate 1 overlaps with the first positioning pattern 501 and the marking pattern 502;

[0121] Furthermore, the first positioning pattern 501 and the marking pattern 502 also include portions that do not overlap with the orthographic projection of the second color resist structure 1002 onto the array substrate 1.

[0122] In some embodiments, the opposing substrate further includes: a plurality of third color resist structures located in the display area; the first color resist structure, the second color resist structure, and the third color resist structure are located in the same layer;

[0123] like Figure 2 As shown, the light-shielding layer 202 includes a plurality of opening areas 2021 located in the display area AA; a third color resist (not shown) structure covers the opening areas 2021.

[0124] In some embodiments, the display panel includes a plurality of sub-pixels; the opening area is the sub-pixel opening area;

[0125] The multiple sub-pixels include multiple red sub-pixels, multiple blue sub-pixels, and multiple green sub-pixels. Correspondingly, the multiple third color resists include: red color resist located in the red sub-pixel, blue color resist located in the blue sub-pixel, and green color resist located in the green sub-pixel.

[0126] In some embodiments, such as Figure 9 As shown, the array substrate 1 also includes a common electrode line 16 located in the peripheral region NA; the orthographic projection of the first groove 401 onto the substrate falls within the common electrode line 16. Thus, the common electrode line can also shield the first groove, further preventing light leakage at the first groove.

[0127] In some embodiments, the common electrode line is electrically connected to the common electrode;

[0128] like Figure 9 As shown, the common electrode line 16 includes, for example, a first sub-part 1601 located in the first conductive layer 102 and a second sub-part 1602 located in the second transparent conductive layer 104.

[0129] The second sub-part 1602 is electrically connected to the second sub-part 1602.

[0130] In some embodiments, such as Figure 9 As shown, the distance h6 between the edge of the common electrode line 16 and the first groove 401 is greater than or equal to 5 micrometers. This avoids light leakage caused by the common electrode line not completely blocking the first groove due to alignment misalignment.

[0131] In some embodiments, the display panel further includes: a sealant located in the peripheral area between the array substrate and the opposing substrate; that is, the array substrate and the opposing substrate are connected by the sealant.

[0132] The liquid crystal layer is surrounded by a sealing adhesive, and the display area is also surrounded by the sealing adhesive.

[0133] In some embodiments, such as Figure 10 As shown, the sealing adhesive 17 is projected onto the opposite substrate 2 on the side of the second groove 402 facing the display area (not shown).

[0134] In other words, the sealant does not extend to the edges of the array substrate and the opposing substrate, which avoids the introduction of static electricity through the sealant during the process of cutting the motherboard into multiple display panels. Furthermore, the sealant is typically a UV-curable adhesive, requiring UV irradiation for curing after application. Since the second positioning pattern is located on the side of the second groove away from the display area, and the cutout portion of the light-shielding layer is also located on the side of the second groove away from the display area, the sealant does not cover the areas corresponding to the second groove and the cutout portion. This reduces the overlap area between the sealant and the second color resist structure, preventing the second color resist structure located in the second groove and cutout portion from affecting the curing of the sealant and improving the curing yield of the sealant.

[0135] In some embodiments, such as Figure 10 As shown, the sealing adhesive 17 overlaps with the edge of the second color resist structure 1002 in the orthographic projection of the opposing substrate 2.

[0136] In some embodiments, such as Figure 2 As shown, the display panel also includes: conductive adhesive 11 in contact with the array substrate 1; the conductive adhesive 11 is located between the display area AA and the bonding area NA-1;

[0137] The light-shielding layer 202 is projected onto the array substrate 1 on the side of the conductive adhesive 11 away from the bonding area NA-1;

[0138] The second groove 402 also includes a fourth part 4024; the fourth part 4024 is located between the binding area NA-1 and the display area AA, and the fourth part 4024 is connected to the second part 4022 and / or the third part 4023.

[0139] The display panel provided in this application embodiment has a conductive adhesive in contact with the array substrate, thereby dissipating static electricity from the array substrate. Furthermore, the second groove includes a portion located between the conductive adhesive and the display area, thus isolating the light-shielding layer on its outer side (the side facing away from the display area) from the light-shielding layer on its inner side (the side facing the display area). In this way, even if the light-shielding layer on the outer side of the second groove contacts the conductive adhesive and conducts static electricity, the second groove can still isolate the static electricity from the light-shielding layer on its inner side, preventing a large area of ​​the light-shielding layer on the inner side of the second groove from becoming charged and causing poor greening in the L0 grayscale.

[0140] In some embodiments, the conductive adhesive is conductive silver paste.

[0141] In some embodiments, in the first direction Y, the maximum distance H2 between the center of the orthographic projection of the conductive adhesive 11 onto the array substrate 1 and the fourth portion 4024 is greater than or equal to 500 micrometers.

[0142] In some embodiments, the second groove includes a fourth portion, the two ends of which are connected to the second portion and the third portion respectively, that is, the second groove surrounds the first groove.

[0143] Alternatively, in some embodiments, such as Figure 2 As shown, the end of the fourth part 4024 that is away from the second part 4022 or the third part 4023 extends to the edge of the light-shielding layer 202;

[0144] In the second direction X, the distance H3 between the end of the fourth portion 4024 away from the second portion 4022 or the third portion 4023 and the center of the conductive adhesive 11 in the orthogonal projection of the array substrate 1 is greater than or equal to 500 micrometers.

[0145] In some embodiments, such as Figure 2 As shown, the second groove 402 includes two fourth portions 4024 that are disconnected from each other; one end of one fourth portion 4024 is connected to the second portion 4022 and the other end extends to the edge of the light-shielding layer 202; one end of the other fourth portion 4024 is connected to the third portion 4023 and the other end extends to the edge of the light-shielding layer 202.

[0146] The display panel provided in this application embodiment has a fourth portion of the second groove extending to the edge of the light-shielding layer. The two fourth portions are disconnected, so the second groove is not connected end to end. Correspondingly, the second color resist structure covering the second groove is also not connected end to end. This can prevent static electricity from being introduced into the light-shielding layer inside the second groove through the connected second color resist structure, and further avoid poor greening of L0 grayscale.

[0147] In some embodiments, the orthographic projection of the common electrode line surrounds the display area. The conductive adhesive contacts the common electrode line, thereby dissipating static electricity from the common electrode line. Specifically, the conductive adhesive contacts the second sub-portion of the common electrode line located in the second transparent conductive layer.

[0148] In some embodiments, such as Figure 11 , Figure 12 As shown, the display panel also includes: a first alignment mark 7 and a second alignment mark 8; the first alignment mark 7 and the second alignment mark 8 are located in the peripheral area NA of the display area AA on the side away from the binding area NA-1;

[0149] The array substrate 1 includes a first alignment mark 7, and the light-shielding layer 202 includes a second alignment mark 8; the second alignment mark 8 is an opening penetrating the light-shielding layer 202, and the second alignment mark 8 is surrounded by a non-opening area of ​​the light-shielding layer 202.

[0150] The first alignment mark 7 and the second alignment mark 8 correspond one-to-one;

[0151] The shape of the first alignment mark 7 is the same as that of the second alignment mark 8, and the orthographic projection of the first alignment mark 7 onto the light-shielding layer 202 covers the second alignment mark 8.

[0152] It should be noted that, Figure 12 for Figure 11 An enlarged schematic diagram of the region containing the first alignment mark 7 and the second alignment mark 8.

[0153] In related technologies, such as Figure 13 As shown, the array substrate 1 includes a first alignment mark 7, and the area where the light-shielding layer is set on the first alignment mark 7 includes a removal area E4, that is, the orthographic projection of the first alignment mark 7 onto the opposing substrate 2 is located outside the edge of the light-shielding layer 202. The removal area E4 is not covered by the light-shielding layer, as... Figure 14 As shown, when the display panel is applied to a display device, a lower polarizer 23 is provided on the lower surface of the array substrate 1, and an upper polarizer 14 is provided on the upper surface of the opposing substrate. The frame 22 of the display device covers the edge of the opposing substrate 2 and there is a gap between it and the upper polarizer 24. The light emitted from the backlight module 25 reaches the array substrate 1 and then reaches the removal area E4. It will be emitted from between the frame 22 and the upper polarizer 24, which will cause light leakage at the edge of the display panel.

[0154] The display panel provided in this application embodiment has a second alignment mark in the area where the first alignment mark is set, which exposes a portion of the first alignment mark, thereby preventing the light-shielding layer from obscuring the first alignment mark. Since the second alignment mark is surrounded by the non-opening area of ​​the light-shielding layer, and the orthographic projection of the first alignment mark onto the light-shielding layer covers the second alignment mark, that is, the orthographic projection of the area surrounding the first alignment mark onto the substrate is also covered by the light-shielding layer, the area corresponding to the first alignment mark is no longer a large area where the light-shielding layer is removed. Providing the coverage area of ​​the light-shielding layer allows light to leak from the environment in the area surrounding the first alignment mark, improving the display effect.

[0155] It should be noted that, Figure 11 The illustration will be given using the example where both the first alignment mark 7 and the second alignment mark 8 are cross-shaped. Alternatively, in some embodiments, such as... Figure 15 As shown, the shapes of the first alignment mark 7 and the second alignment mark 8 can also be L-shaped or other shapes.

[0156] In some embodiments, such as Figure 15 As shown, the edge of the light-shielding layer 202 also includes a mosaic pattern 20; the mosaic pattern 20 includes multiple interlocking block structures. This further avoids the risk of light leakage at the edges.

[0157] In some embodiments, such as Figure 11 As shown, in the direction perpendicular to the display panel, the orthographic projections of the first alignment mark 7 and the second alignment mark 8 are located on the side of the second groove 402 opposite to the display area AA.

[0158] Both the array substrate 1 and the opposing substrate 2 include a corner region 9, and the first alignment mark 7 and the second alignment mark 8 are located in the corner region 9.

[0159] The setting of the first and second alignment marks can prevent light leakage in the corner area.

[0160] In some embodiments, such as Figure 11 As shown, a portion of the second groove 402 adjacent to the second alignment mark 8 extends in a direction intersecting the first direction Y and the second direction X. Specifically, the connection between the first portion 4021 and the third portion 4023 of the second groove 402 extends in a direction intersecting the first direction Y and the second direction X, and the connection between the first portion 4021 and the second portion 4022 of the second groove 402 extends in a direction intersecting the first direction Y and the second direction X. This provides sufficient space for the second alignment mark and the first alignment mark.

[0161] In some embodiments, in a direction perpendicular to the display panel, the distance between the edge of the orthographic projection of the first alignment mark and the edge of the orthographic projection of the second alignment mark is greater than or equal to 10 micrometers, thereby avoiding the second alignment mark from failing to expose the cross-shaped first alignment mark due to process fluctuations, and avoiding affecting the alignment function of the first alignment mark.

[0162] In some embodiments, the first conductive layer or the second conductive layer includes a first alignment mark.

[0163] In some embodiments, such as Figure 16 As shown, the edges of the first substrate 101 and the second substrate (not shown) both include corners 19, and the corners 19 on the side of the first substrate 101 and the second substrate away from the bonding area NA-1 are not right angles.

[0164] That is, the original right-angled areas of the edges of the first substrate and the second substrate on the side away from the bonding area are cut off, so that the corners of the first substrate and the second substrate are not right angles, thereby further avoiding light leakage from the edges of the first substrate and the second substrate from affecting the display effect.

[0165] In some embodiments, such as Figure 16 As shown, corner 19 is equivalent to the chamfer formed by removing the triangular area from the right angle. The side length of the removed triangular area is, for example, 0.2 mm.

[0166] This application provides a display device, such as... Figure 17 As shown, the display device includes the display panel 26 provided in the embodiments of this application.

[0167] In some embodiments, such as Figure 17 As shown, the display device may also include a backlight module 27 located on the light-incident side of the display panel 26. The backlight module may be a direct-lit backlight module or an edge-lit backlight module.

[0168] In practical implementation, a side-lit backlight module may include LED strips, stacked reflective sheets, light guide plates, diffusers, prism assemblies, etc., with the LED strips located on one side of the thickness direction of the light guide plate. A direct-lit backlight module may include a matrix light source, a reflective sheet, diffuser plate, and brightness enhancement film stacked on the light-emitting side of the matrix light source, with the reflective sheet including openings directly opposite the positions of the LEDs in the matrix light source. The LEDs in the LED strips and the LEDs in the matrix light source can be light-emitting diodes (LEDs), such as miniature LEDs (Mini LEDs, Micro LEDs, etc.). Submillimeter-scale or even micrometer-scale miniature LEDs, like organic light-emitting diodes (OLEDs), are self-emissive devices. Like OLEDs, they possess a series of advantages such as high brightness, ultra-low latency, and ultra-wide viewing angles. Furthermore, because inorganic LEDs emit light based on more stable and lower-resistance metal semiconductors, they have advantages over organic LEDs, such as lower power consumption, greater resistance to high and low temperatures, and longer lifespan. Furthermore, when micro LEDs are used as backlights, more precise dynamic backlighting effects can be achieved. This not only effectively improves screen brightness and contrast but also solves the glare problem caused by traditional dynamic backlighting between bright and dark areas of the screen, thus optimizing the visual experience.

[0169] The display device provided in this application embodiment includes any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, and navigator. Other essential components of this display device are understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting this application. Implementation of this display device can refer to the above-described display panel embodiment; repeated details will not be elaborated upon.

[0170] In summary, the display panel and display device provided in this application embodiment have at least one groove in the peripheral area of ​​the light-shielding layer, which can prevent static electricity from being conducted into the display panel along the light-shielding layer and prevent the display panel from turning green in the L0 grayscale. The positioning pattern consists of a first positioning pattern and a marking pattern included in the array substrate, and a second positioning pattern included in the opposing substrate. Therefore, the alignment accuracy between the array substrate and the opposing substrate can be determined and adjusted based on the first positioning pattern, the marking pattern, and the second positioning pattern, thereby improving the alignment accuracy between the array substrate and the opposing substrate. Furthermore, the positioning pattern is located on the side of the groove away from the display area, thereby preventing light leakage in the peripheral area of ​​the display panel caused by the setting of the second positioning pattern.

[0171] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0172] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A display panel, characterized in that, The display panel includes: an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer located between the array substrate and the counter substrate; The display panel includes a display area and a peripheral area surrounding the display area; The opposing substrate includes a light-shielding layer; the light-shielding layer includes at least one groove located in the peripheral region; The display panel further includes at least one positioning pattern located in the peripheral area; the positioning pattern includes: at least one marking pattern and a plurality of first positioning patterns located in the array substrate, and a plurality of second positioning patterns located in the light-shielding layer; The positioning pattern is projected onto the opposing substrate on the side of the at least one groove away from the display area; The plurality of first positioning patterns are arranged sequentially along the extension direction of the groove; the plurality of first positioning patterns are located on one side of the marking pattern in the extension direction of the groove; The plurality of second positioning patterns are arranged sequentially in the extending direction of the groove; the second positioning patterns overlap with the first pattern in the orthographic projection of the array substrate, and the light-shielding layer covers the marking pattern in the orthographic projection of the array substrate.

2. The display panel according to claim 1, characterized in that, In the arrangement direction perpendicular to the plurality of first positioning patterns, a portion of the first positioning patterns has a first length, and the remaining portion of the first positioning patterns has a second length. The first length is greater than the second length, and the first positioning patterns of the first length and the first positioning patterns of the second length are arranged alternately. The light-shielding layer also includes multiple cutouts, with the second positioning pattern located between two adjacent cutouts; the lengths of the multiple cutouts are equal in the direction perpendicular to their arrangement. The plurality of first positioning patterns are adjacent to the marking pattern on both sides of the extension direction of the groove.

3. The display panel according to claim 2, characterized in that, The hollowed-out portion is connected to the groove.

4. The display panel according to any one of claims 1 to 3, characterized in that, The at least one groove includes: a first groove and a second groove; The first groove surrounds the display area, and the second groove is located on the side of the first groove away from the display area; The positioning pattern is projected onto the opposing substrate on the side of the second groove away from the display area.

5. The display panel according to claim 4, characterized in that, The peripheral area includes a binding area located on one side of the display area in the first direction; The second groove includes at least a first portion, a second portion, and a third portion; the second portion, the first portion, and the third portion are interconnected. The first portion is located on the side of the display area away from the binding area, and the second portion and the third portion are respectively located on both sides of the display area in a second direction; the first direction intersects the second direction; The second groove includes at least: a first portion located in the third peripheral region, a second portion located in the second peripheral region, and a third portion located in the fourth peripheral region; the first portion, the second portion, and the third portion are interconnected. In a direction perpendicular to the plane of the display panel, the orthographic projections of the first part, the second part, and the third part on the side away from the display area all include the orthographic projection of the pattern.

6. The display panel according to claim 5, characterized in that, The display panel further includes: a conductive adhesive in contact with the array substrate; the conductive adhesive is located between the display area and the bonding area; The light-shielding layer is projected onto the array substrate on the side of the conductive adhesive away from the bonding area; The second groove further includes a fourth portion; the fourth portion is located between the binding area and the display area, and the fourth portion is in communication with the second portion and / or the third portion.

7. The display panel according to claim 6, characterized in that, In the first direction, the maximum distance between the center of the conductive adhesive's orthogonal projection onto the array substrate and the fourth portion is greater than or equal to 500 micrometers.

8. The display panel according to claim 6 or 7, characterized in that, The fourth portion extends away from the second portion or the third portion to the edge of the light-shielding layer; In the second direction, the distance between the end of the fourth portion away from the second portion or the third portion and the center of the conductive adhesive in the orthogonal projection of the array substrate is greater than or equal to 500 micrometers.

9. The display panel according to any one of claims 1 to 3, 5 to 7, characterized in that, The opposing substrate further includes: a color resist structure; The color resist structure includes a portion located within the groove and a portion located on the side of the light-shielding layer facing the array substrate; At least part of the color resist structure also includes a portion located within the cutout portion.

10. The display panel according to claim 9, characterized in that, The distance between the edge of the color resist structure and the groove is greater than or equal to 5 micrometers.

11. The display panel according to any one of claims 1 to 3, 5 to 7, and 10, characterized in that, The array substrate also includes a common electrode line located in the peripheral region; the first groove, when projected onto the substrate, falls within the common electrode line.

12. The display panel according to any one of claims 1 to 3, 5 to 7, and 10, characterized in that, The peripheral area includes a binding area; a first alignment mark and a second alignment mark; the first alignment mark and the second alignment mark are located in the peripheral area on the side of the display area away from the binding area; The array substrate includes a first alignment mark, and the light-shielding layer includes a second alignment mark; the second alignment mark is an opening penetrating the light-shielding layer, and the second alignment mark is surrounded by a non-opening area of ​​the light-shielding layer. The first alignment mark corresponds one-to-one with the second alignment mark; The shape of the first alignment mark is the same as that of the second alignment mark, and the orthographic projection of the first alignment mark on the light-shielding layer covers the second alignment mark.

13. The display panel according to claim 12, characterized in that, In a direction perpendicular to the display panel, the orthographic projections of the first alignment mark and the second alignment mark are located on the side of the second groove opposite to the display area; Both the array substrate and the opposing substrate include a corner region, and the first alignment mark and the second alignment mark are located in the corner region.

14. The display panel according to any one of claims 1 to 3, 5 to 7, and 10, characterized in that, The array substrate includes a first substrate, and the opposing substrate includes a second substrate. The edges of both the first substrate and the second substrate include corners, and the corners on the side of the first substrate and the second substrate away from the bonding area are not right angles.

15. A display device, characterized in that, The display device includes a display panel according to any one of claims 1 to 14.

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