Display panel and display device

Abstract

This application relates to a display panel and a display device; the display panel includes a plurality of pixel areas arranged along a first direction and a second direction; a conductive layer includes a plurality of signal lines arranged along the first direction, and a plurality of pixel areas arranged along the second direction are disposed between two adjacent signal lines; a light-shielding layer includes a light-shielding portion located between two adjacent pixel areas along the first direction; wherein, the orthographic projection of the light-shielding portion on the first substrate at least partially overlaps with the orthographic projection of the signal lines on the first substrate, and at least part of the light-shielding portion extends into the pixel area; this application can further shield light obliquely incident into the pixel area, reduce light leakage, reduce dark state brightness, and improve the contrast of the display panel.

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] Currently, display panels have increasingly higher requirements for viewing angle and contrast in order to improve information readability, adapt to multi-angle viewing, and enhance the overall user experience.

[0003] For example, in in-vehicle displays, the low contrast makes it difficult for drivers to read the information on the display under various driving conditions (such as daytime, nighttime, sunny days, rainy days, etc.) and the influence of the in-vehicle environment. Summary of the Invention

[0004] This application provides a display panel and a display device that can improve the contrast of the display panel.

[0005] This application provides a display panel, which includes a plurality of pixel areas arranged along a first direction and a second direction, wherein the first direction and the second direction intersect.

[0006] The display panel also includes:

[0007] First substrate;

[0008] A conductive layer is disposed on the first substrate. The conductive layer includes a plurality of signal lines arranged along the first direction, and a plurality of pixel regions arranged along the second direction are disposed between two adjacent signal lines.

[0009] A black matrix is ​​disposed on the side of the conductive layer away from the first substrate, and the black matrix is ​​disposed at least between two adjacent pixel regions along the first direction;

[0010] A light-shielding layer is disposed between the first substrate and the conductive layer, or between the conductive layer and the black matrix, wherein the light-shielding layer includes a light-shielding portion located between two adjacent pixel regions along the first direction;

[0011] Wherein, the orthographic projection of the light-shielding portion on the first substrate at least partially overlaps with the orthographic projection of the signal line on the first substrate, and at least a portion of the light-shielding portion extends into the pixel area.

[0012] In one embodiment of this application, the signal line includes a signal line segment located between two adjacent pixel regions along the first direction, and the light-shielding portion is not parallel to the signal line segment.

[0013] In one embodiment of this application, the center of the light-shielding portion does not coincide with the center of the signal line segment, and the line connecting the center of the light-shielding portion and the center of the signal line segment is parallel to the first direction.

[0014] In one embodiment of this application, the light-shielding portion includes a first side and a second side disposed opposite to each other along the first direction. Between any two adjacent pixel regions along the first direction, the distance from the center of the signal line segment to the first side is greater than the distance from the center of the signal line segment to the second side.

[0015] In one embodiment of this application, the overlapping area of ​​a pixel region located on the first side of the light-shielding portion with the light-shielding portion is greater than the overlapping area of ​​a pixel region located on the second side of the light-shielding portion with the light-shielding portion.

[0016] In one embodiment of this application, the signal segment includes a first segment and a second segment connected together. The first segment and the second segment are connected at the center of the signal segment. The first segment and the second segment have a first included angle toward the center side of the light-shielding part and a second included angle away from the center side of the light-shielding part. The first included angle is smaller than the second included angle.

[0017] In one embodiment of this application, the light-shielding portion is parallel to the second direction, and the acute angle between the light-shielding portion and the first line segment is equal to the acute angle between the light-shielding portion and the second line segment.

[0018] In one embodiment of this application, the light-shielding portion intersects with the second direction, and the light-shielding portion includes a first light-shielding sub-part and a second light-shielding sub-part connected to each other. The first light-shielding sub-part and the second light-shielding sub-part are connected at the center of the light-shielding portion. The first light-shielding sub-part overlaps with the first line segment, and the second light-shielding sub-part overlaps with the second line segment.

[0019] The acute angle between the first light-shielding sub-part and the first line segment is equal to the acute angle between the second light-shielding sub-part and the second line segment.

[0020] In one embodiment of this application, the acute angle between the light-shielding part and the signal line segment is greater than or equal to 5° and less than or equal to 15°.

[0021] In one embodiment of this application, the signal line includes a signal line segment located between two adjacent pixel areas along the first direction, and the light-shielding portion is arranged parallel to the signal line segment.

[0022] In one embodiment of this application, the black matrix includes a first sub-section located between two adjacent pixel regions along the first direction, the first sub-section being parallel to the signal line segment.

[0023] In one embodiment of this application, the black matrix further includes a second sub-part connected to the first sub-part, the second sub-part extending into the pixel area located on a first side of the first sub-part;

[0024] And / or, the black matrix further includes a third sub-part connected to the first sub-part, the third sub-part extending into the pixel area located on a second side opposite to the first sub-part and the first side, and the direction from the first side to the second side is the first direction.

[0025] In one embodiment of this application, the second sub-part partially overlaps with the center of the pixel region along the first direction, the third sub-part partially overlaps with the center of the pixel region along the first direction, the length of the second sub-part along the first direction is less than the length of the third sub-part along the first direction, and the length of the second sub-part along the second direction is greater than the length of the third sub-part along the second direction.

[0026] In one embodiment of this application, the display panel further includes a device region located between two adjacent pixel regions along the second direction, the display panel further includes a thin-film transistor disposed on the first substrate and located within the device region, the thin-film transistor being connected to the signal line, and the black matrix further includes a fourth sub-part covering at least the device region.

[0027] In one embodiment of this application, the display panel further includes:

[0028] Multiple pixel electrodes are disposed on the side of the conductive layer away from the first substrate. The multiple pixel electrodes are disposed corresponding to multiple pixel regions. The pixel electrodes in the pixel regions are connected to the thin film transistors in the adjacent device regions along the second direction.

[0029] The pixel electrode includes a main body and ends located on opposite sides of the main body along the second direction, wherein at least a portion of the ends are projected onto the first substrate in the orthographic projection of the fourth sub-part onto the first substrate.

[0030] In one embodiment of this application, the light-shielding layer is disposed between the conductive layer and the black matrix, and the display panel further includes:

[0031] The second substrate is disposed on the side of the light-shielding layer away from the first substrate, and the black matrix is ​​disposed on the second substrate and located on the side of the second substrate close to the light-shielding layer;

[0032] A common electrode is disposed on the side of the conductive layer away from the first substrate, and the light-shielding part is connected to the common electrode. The material of the light-shielding layer includes a metallic material.

[0033] A liquid crystal layer is disposed between the common electrode and the black matrix.

[0034] In one embodiment of this application, any of the pixel regions includes a third side and a fourth side disposed opposite to each other along the first direction, and the length of the light-shielding portion is less than the length of the third side.

[0035] In accordance with the above-mentioned objectives of this application, embodiments of this application also provide a display device, the display device including the display panel.

[0036] This application provides a display panel and a display device. By adding a light-shielding layer to the display panel, and the light-shielding layer including a light-shielding part that at least partially overlaps with the signal line, and the light-shielding part being at least partially located between adjacent pixel areas, it can further block light entering the pixel area at an angle on the basis of the original black matrix, reduce light leakage, reduce dark state brightness, and improve the contrast of the display panel. Furthermore, since at least part of the light-shielding part extends into the pixel area, the degree of blocking of the oblique light emitted by the light-shielding part to the adjacent pixel area can be adjusted by adjusting the blocking area of ​​the light-shielding part to the adjacent pixel area, so that the blocking effect of the light-shielding part on the oblique light emitted in the preset direction is greater, thereby improving the contrast of the display panel in the preset direction.

[0037] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0038] 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 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.

[0039] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0040] Figure 1 This is a schematic diagram of a first structure of a display panel provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of a first planar distribution structure of a display panel provided in an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of a second planar distribution structure of a display panel provided in an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of a second structure of the display panel provided in an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of a third structure of the display panel provided in an embodiment of this application;

[0045] Figure 6 This is a schematic diagram of a third planar distribution structure of a display panel provided in an embodiment of this application;

[0046] Figure 7 This is a schematic diagram of a first structure between a signal line segment and a light-shielding part provided in an embodiment of this application.

[0047] Figure 8 A schematic diagram of a second structure between the signal line segment and the light-shielding part provided in an embodiment of this application;

[0048] Figure 9 This is a schematic diagram of a fourth planar distribution structure of a display panel provided in an embodiment of this application;

[0049] Figure 10 A schematic diagram of a fifth planar distribution structure of a display panel provided in an embodiment of this application;

[0050] Figure 11 A schematic diagram of a sixth planar distribution structure of a display panel provided in an embodiment of this application;

[0051] Figure 12 A schematic diagram of a seventh planar distribution structure of a display panel provided in an embodiment of this application;

[0052] Figure 13 This is a schematic diagram of a third structure between the signal line segment and the light-shielding part provided in an embodiment of this application;

[0053] Figure 14 This is a schematic diagram of a display device provided in an embodiment of this application.

[0054] Explanation of reference numerals in the attached figures:

[0055] 11. First substrate; 12. Second substrate; 101. Pixel area; 1011. Third side; 1012. Fourth side; 102. Device area;

[0056] 20. Conductive layer; 21. Signal line; 211. Signal segment; 2111. First segment; 2112. Second segment; 22. Touch line;

[0057] 30. Black Matrix; 31. First Sub-section; 32. Second Sub-section; 33. Third Sub-section; 34. Fourth Sub-section;

[0058] 40. Light-shielding layer; 41. Light-shielding part; 411. First light-shielding sub-part; 412. Second light-shielding sub-part; 413. First side; 414. Fourth side;

[0059] 50. Device layer; 51. Pixel electrode; 52. Thin-film transistor; 521. Active layer; 522. Gate; 523. Source; 524. Drain; 53. Shielding layer; 54. Buffer layer; 55. Gate insulating layer; 56. Interlayer dielectric layer; 57. Planarization layer; 58. Insulating layer; 59. Common electrode;

[0060] 61. Color block; 62. Protective layer; 63. Spacer pillars; 64. Liquid crystal layer. Detailed Implementation

[0061] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0062] Please combine Figure 1 , Figure 2 as well as Figure 3 This application provides a display panel, which includes a plurality of pixel areas 101 arranged along a first direction X and a second direction Y, wherein the first direction X and the second direction Y intersect.

[0063] The display panel further includes a first substrate 11, a conductive layer 20, a black matrix 30, and a light-shielding layer 40; the conductive layer 20 is disposed on the first substrate 11, and the conductive layer 20 includes a plurality of signal lines 21 arranged along the first direction X, and a plurality of pixel areas 101 arranged along the second direction Y are disposed between two adjacent signal lines 21; the black matrix 30 is disposed on the side of the conductive layer 20 away from the first substrate 11, and the black matrix 30 is disposed between at least two adjacent pixel areas 101 along the first direction X; the light-shielding layer 40 is disposed between the first substrate 11 and the conductive layer 20, or between the conductive layer 20 and the black matrix 30, and the light-shielding layer 40 includes a light-shielding portion 41 located between two adjacent pixel areas 101 along the first direction X.

[0064] Wherein, the orthographic projection of the light-shielding part 41 on the first substrate 11 at least partially overlaps with the orthographic projection of the signal line 21 on the first substrate 11, and at least a portion of the light-shielding part 41 extends into the pixel area 101.

[0065] In the implementation process, this application embodiment adds a light-shielding layer 40 to the display panel, and the light-shielding layer 40 includes a light-shielding part 41 that at least partially overlaps with the signal line 21. Furthermore, the light-shielding part 41 is at least partially located between adjacent pixel areas 101. This further enhances the light-shielding effect of the original black matrix 30 on light incident obliquely into the pixel area 101, reducing light leakage and lowering dark-state brightness, thereby improving the contrast of the display panel. Furthermore, at least a portion of the light-shielding part 41 extends into the pixel area 101. Therefore, by adjusting the area of ​​obstruction by the light-shielding part 41 on adjacent pixel areas 101, the degree of obstruction of obliquely emitted light from adjacent pixel areas 101 can be adjusted, making the obstruction effect of the light-shielding part 41 on obliquely emitted light in a preset direction greater, thereby improving the contrast of the display panel in the preset direction.

[0066] Specifically, please continue to combine Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The display panel includes a first substrate 11 and a second substrate 12 disposed opposite to each other, a device layer 50, a color resist layer, a protective layer 62, spacer pillars 63, and a liquid crystal layer 64.

[0067] In some embodiments, the device layer 50 is disposed on the first substrate 11 and located on the side of the first substrate 11 close to the second substrate 12.

[0068] In some embodiments, the device layer 50 includes a shielding layer 53, a thin-film transistor 52, and an insulating film layer covering the shielding layer 53 and the thin-film transistor 52 disposed on the first substrate 11; specifically, the thin-film transistor 52 includes an active layer 521, a gate 522, a source 523, and a drain 524, and the insulating film layer includes a buffer layer 54, a gate insulating layer 55, an interlayer dielectric layer 56, a planarization layer 57, and an insulating layer 58; wherein, the shielding layer 53 is disposed on the surface of the first substrate 11 near the second substrate 12, the buffer layer 54 covers the shielding layer 53, and the active layer 50... Active layer 521 is disposed on buffer layer 54 and located on the side of shielding layer 53 away from the first substrate 11. Gate insulating layer 55 covers active layer 521. Gate 522 is disposed on gate insulating layer 55 and located on the side of active layer 521 away from shielding layer 53. Interlayer dielectric layer 56 covers gate 522. Source 523 and drain 524 are disposed on interlayer dielectric layer 56 and pass through interlayer dielectric layer 56 and gate insulating layer 55, respectively overlapping with both sides of active layer 521. Planarization layer 57 covers source 523 and drain 524.

[0069] In some embodiments, the display panel includes a plurality of pixel regions 101 arranged along the first direction X and the second direction Y, and the first direction X and the second direction Y intersect. Further, the display panel also includes a device region 102 located between two adjacent pixel regions 101 along the second direction Y. The thin-film transistor 52 can be disposed in the device region 102 to avoid the thin-film transistor 52 blocking the light emitted by the pixel region 101. Each pixel region 101 can correspond to one device region 102. Thus, the thin-film transistor 52 in each device region 102 can be used to control the signal transmitted to the corresponding pixel region 101.

[0070] In some embodiments, the first direction X is perpendicular to the second direction Y.

[0071] In some embodiments, the device layer 50 further includes a plurality of pixel electrodes 51 and a common electrode 59, wherein the pixel electrodes 51 and the common electrode 59 are disposed on the side of the thin film transistor 52 away from the first substrate 11; the plurality of pixel electrodes 51 are correspondingly disposed with respect to a plurality of pixel regions 101, and the pixel electrode 51 in each pixel region 101 is connected to the thin film transistor 52 in the adjacent device region 102 along the second direction Y, so as to enable the thin film transistor 52 in the device region 102 to be used to control the signal transmitted to the corresponding pixel region 101.

[0072] In some embodiments, the plurality of pixel electrodes 51 are configured in a one-to-one correspondence with the plurality of pixel regions 101.

[0073] In some embodiments, the color filter layer is disposed on the second substrate 12 and located on the side of the second substrate 12 close to the first substrate 11. The color filter layer includes a black matrix 30 disposed on the second substrate 12 and a plurality of color blocks 61, and the black matrix 30 is located between adjacent color blocks 61. The protective layer 62 covers the plurality of color blocks 61 and the black matrix 30. The spacer pillars 63 are disposed on the side of the protective layer 62 away from the second substrate 12.

[0074] The plurality of color resist blocks 61 are configured corresponding to the plurality of pixel areas 101, and the plurality of color resist blocks 61 may include red color resist blocks, green color resist blocks and blue color resist blocks, thereby enabling colored light to pass through the color filter layer to achieve full-color display of the display panel.

[0075] In some embodiments, the plurality of color resist blocks 61 are configured in a one-to-one correspondence with the plurality of pixel regions 101.

[0076] In some embodiments, the liquid crystal layer 64 is disposed between the device layer 50 and the protective layer 62 and includes a plurality of liquid crystal molecules. The pixel electrode 51 in each pixel region 101 can form an electric field with the common electrode 59 to control the deflection of the liquid crystal molecules in each pixel region 101, thereby controlling the amount of light passing through each pixel region 101 to realize the display function of the display panel.

[0077] In this embodiment, the conductive layer 20 is located in the device layer 50, that is, the conductive layer 20 is a film layer in the device layer 50; the conductive layer 20 includes a plurality of signal lines 21 arranged along the first direction X, and a plurality of pixel regions 101 arranged along the second direction Y are disposed between two adjacent signal lines 21, and a signal line 21 is disposed between two adjacent columns of pixel regions 101 along the first direction X.

[0078] In some embodiments, the conductive layer 20 may include the source 523 and the drain 524, that is, the signal line 21 is disposed on the same layer as the source 523 and the drain 524.

[0079] The signal line 21 is used to transmit signals to a plurality of adjacent pixel regions 101 arranged along the second direction Y. The signal line 21 can be a data line. The signal line 21 is connected to the thin film transistors 52 in the plurality of adjacent device regions 102 arranged along the second direction Y. For example, it can be connected to the source 523 or the drain 524. Then, the signal in the signal line 21 can be transmitted to the pixel electrode 51 in the corresponding pixel region 101 through the thin film transistors 52.

[0080] In some embodiments, the conductive layer 20 may further include a touch line 22, and the touch line 22 may be disposed between two adjacent columns of the pixel areas 101 along the first direction X.

[0081] In some embodiments, the black matrix 30 may include a first sub-section 31 disposed between two adjacent pixel areas 101 along the first direction X. Both the signal line 21 and the first sub-section 31 can block the light emitted between adjacent pixel areas 101. However, the light emitted by each pixel area 101 is still easily affected by oblique light emission, which seriously affects the contrast of the display panel.

[0082] In this embodiment, the light-shielding layer 40 is located in the device layer 50. The light-shielding layer 40 is located between the first substrate 11 and the conductive layer 20, or between the conductive layer 20 and the black matrix 30. This embodiment uses the example of the light-shielding layer 40 being located between the conductive layer 20 and the black matrix 30 for illustration. Figure 1 As shown.

[0083] The light-shielding layer 40 includes a light-shielding portion 41 located between two adjacent pixel regions 101 along the first direction X, and the orthographic projection of the light-shielding portion 41 on the first substrate 11 at least partially overlaps with the orthographic projection of the signal line 21 on the first substrate 11; such as Figure 1 As shown, light A1 is emitted between adjacent signal lines 21 and can enter the liquid crystal layer 64 from the edge of the light-shielding part 41, reaching the color filter layer. Compared to the forward direction, the emission direction of light A2 is more oblique than that of light A1. Therefore, when light A2 passes through the edge of the signal line 21, it will still be blocked by the light-shielding part 41 to avoid the oblique light A2 affecting the light emission of the adjacent pixel area 101, which can effectively improve the contrast of the display panel.

[0084] In some embodiments, the width of the light-shielding portion 41 may be greater than, less than or equal to the width of the signal line 21.

[0085] In some embodiments of this application, such as Figure 4 As shown, the common electrode 59 can be disposed on the planarization layer 57 and covered by the insulating layer 58. The light-shielding part 41 is also disposed on the planarization layer 57 and covered by the insulating layer 58, and the light-shielding part 41 can be connected to the common electrode 59.

[0086] In some embodiments, the material of the light-shielding layer 40 may include a conductive metal material. For example, the metal layer 40 may be a single metal layer, multiple metal layers, a metal alloy, or a stack of multiple metal layers and an insulating layer. An insulating layer is provided between adjacent metal layers, and adjacent metal layers can be connected through vias passing through the insulating layer. Furthermore, the connection between the light-shielding part 41 and the common electrode 59 can reduce the resistance of the common electrode 59. The common electrode 59 can also be disposed opposite to the same layer material of the gate 522 to form a storage capacitor. Therefore, the connection between the light-shielding part 41 and the common electrode 59 can improve the charging capability of the storage capacitor formed by the common electrode 59.

[0087] In some embodiments, the material of the light-shielding layer 40 may be an insulating light-shielding material, such as a dark color resist material, and the light-shielding layer 40 may be located between the conductive layer 20 and the liquid crystal layer 64.

[0088] It should be noted that the pixel electrode 51 may be located on the insulating layer 58 and between the insulating layer 58 and the liquid crystal layer 64.

[0089] In some embodiments of this application, such as Figure 5 As shown, the common electrode 59 can be disposed on the insulating layer 58, and the light-shielding part 41 is also disposed on the insulating layer 58, and the light-shielding part 41 can be connected to the common electrode 59.

[0090] In some embodiments, the material of the light-shielding layer 40 can be a conductive metal material, and the connection between the light-shielding part 41 and the common electrode 59 can reduce the resistance of the common electrode 59. Furthermore, the common electrode 59 can be disposed opposite to the same layer material of the gate 522 to form a storage capacitor, and the connection between the light-shielding part 41 and the common electrode 59 can improve the charging capability of the storage capacitor formed by the common electrode 59.

[0091] In some embodiments, the material of the light-shielding layer 40 may be an insulating light-shielding material, such as a dark color resist material, and the light-shielding layer 40 may be located between the conductive layer 20 and the liquid crystal layer 64.

[0092] It should be noted that the pixel electrode 51 may be located between the planarization layer 57 and the insulating layer 58.

[0093] In other embodiments of this application, the light-shielding layer 40 may also be disposed in other locations, such as between the conductive layer 20 and the film layer where the common electrode 59 is located, or on the side of the common electrode 59 away from the conductive layer 59.

[0094] In some embodiments, please combine Figure 1 , Figure 2 , Figure 3 as well as Figure 6 The signal line 21 includes a signal line segment 211 located between two adjacent pixel areas 101 along the first direction X. The light-shielding part 41 is not parallel to the signal line segment 211, and at least a portion of the light-shielding part 41 extends into the pixel area 101. Furthermore, by adjusting the blocking area of ​​the light-shielding part 41 on the adjacent pixel area 101, the degree of blocking of the oblique light emitted by the light-shielding part 41 on the adjacent pixel area 101 can be adjusted, so that the blocking effect of the light-shielding part 41 on the oblique light emitted in the preset direction is greater, thereby improving the contrast of the display panel in the preset direction.

[0095] It should be noted that the center of the light-shielding part 41 does not coincide with the center of the signal line segment 211, and the line connecting the center of the light-shielding part 41 and the center of the signal line segment 211 is parallel to the first direction X; that is, the light-shielding part 41 is offset relative to the signal line segment 211 towards an adjacent pixel area 101, thereby improving the blocking effect of the light-shielding part 41 on the oblique light emission of the adjacent pixel area 101.

[0096] It has been verified that light leakage is more likely to occur in the middle of the edge area of ​​the pixel area 101. Therefore, the line connecting the center of the light-shielding part 41 and the center of the signal line segment 211 is parallel to the first direction X, which can effectively block the position of the pixel area 101 that is prone to light leakage, thereby more effectively improving the contrast of the display panel.

[0097] It is understandable that, since the added light-shielding layer 40 is located on the side of the black matrix 30 closer to the backlight, that is, the light-shielding part 41 is located closer to the light source, by adjusting the position and structure of the light-shielding part 41, the oblique light can be blocked more effectively, which is more conducive to and more effective in improving the contrast of the display panel.

[0098] In some embodiments, the light-shielding portion 41 includes a first side 413 and a second side 414 disposed opposite to each other along the first direction X. Between any two adjacent pixel regions 101 along the first direction X, the distance H1 from the center of the signal line segment 211 to the first side 413 is greater than the distance H2 from the center of the signal line segment 211 to the second side 414. That is, the light-shielding portion 41 is offset toward the pixel region 101 on the first side 413. Therefore, the overlapping area of ​​a pixel region 101 located on the first side 413 of the light-shielding portion 41 with the light-shielding portion 41 is greater than the overlapping area of ​​a pixel region 101 located on the second side 414 of the light-shielding portion 41 with the light-shielding portion 41.

[0099] It is understandable that when a pixel area 101 located on the first side 413 of the light-shielding part 41 emits light in a direction toward the light-shielding part 41, that is, toward... Figure 6 When light is emitted from the right side of the light-shielding part 41, the light-shielding part 41 has a greater blocking effect, and can more effectively block the light emitted diagonally to the right by a pixel area 101 located on the first side 413 of the light-shielding part 41; when a pixel area 101 located on the second side 414 of the light-shielding part 41 emits light towards the light-shielding part 41, that is, towards Figure 6 When light is emitted from the left side of the display panel, the blocking effect of the light-shielding part 41 is relatively small. Therefore, the blocking effect of the light-shielding part 41 on the oblique light emitted from the pixel area 101 on the right side is relatively small compared with the blocking effect on the pixel area 101 on the left side. This can effectively improve the contrast of the right side of the display panel, thereby achieving the purpose of improving the contrast of the display panel at a specific viewing angle.

[0100] In some embodiments, any pixel region 101 includes a third side 1011 and a fourth side 1012 disposed opposite to each other along the first direction X, and the length of the light-shielding part 41 is less than the length of the third side 1011; thereby, while ensuring that the light-shielding part 41 effectively blocks the oblique light emitted by the pixel region 101, the transmittance of the pixel region 101 can be improved.

[0101] In some embodiments, the ratio of the length of the light-shielding portion 41 to the length of the third side 1011 is greater than or equal to 30% and less than or equal to 80%.

[0102] It should be noted that the signal line segment 211 includes a first line segment 2111 and a second line segment 2112 connected together. The first line segment 2111 and the second line segment 2112 are connected at the center of the signal line segment 211. The first line segment 2111 and the second line segment 2112 have a first included angle α towards the center side of the light-shielding part 41 and a second included angle b away from the center side of the light-shielding part 41. The first included angle α is smaller than the second included angle b, that is, the signal line segment 211 is bent, and the light-shielding part 41 is offset towards the inside of the bend of the signal line segment 211.

[0103] Correspondingly, the pixel electrode 51 includes a main body 511 and end portions 512 connected to opposite sides of the main body 511 along the second direction Y. The main body 511 is bent, and the bending direction and bending angle of the main body 511 can be the same as those of the signal line segment 211.

[0104] It is understood that the acute angle c between the light-shielding part 41 and the signal line segment 211 is greater than or equal to 5° and less than or equal to 15°; for example, the angle c can be 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14° or 15°; wherein, if the angle c is too small or too large, the light-shielding part 41 cannot block the light leakage area of ​​the adjacent pixel area 101 at a specific viewing angle.

[0105] In some embodiments of this application, such as Figure 7 As shown, the light-shielding part 41 is parallel to the second direction Y, and the acute angle between the light-shielding part 41 and the first line segment 2111 is equal to the acute angle between the light-shielding part 41 and the second line segment 2112.

[0106] In some embodiments of this application, such as Figure 8 As shown, the light-shielding part 41 intersects the second direction Y. The light-shielding part 41 includes a first light-shielding sub-part 411 and a second light-shielding sub-part 412 connected to each other. The first light-shielding sub-part 411 and the second light-shielding sub-part 412 are connected at the center of the light-shielding part 41. The first light-shielding sub-part 411 partially overlaps with the first line segment 2111, and the second light-shielding sub-part 412 partially overlaps with the second line segment 2112. The acute angle between the first light-shielding sub-part 411 and the first line segment 2111 is equal to the acute angle between the second light-shielding sub-part 412 and the second line segment 2112.

[0107] It should be noted that the acute angle between the first light-shielding sub-part 411 and the first line segment 2111, and the acute angle between the second light-shielding sub-part 412 and the second line segment 2112, are both greater than or equal to 5° and less than or equal to 15°.

[0108] Furthermore, the light-shielding layer 40 can be a single film layer or a stacked structure of multiple sub-layers. Consequently, the light-shielding portion 41 can be composed of multiple sub-layers, meaning that different parts of the light-shielding portion 41 can be located in different sub-layers. For example, the light-shielding layer 40 can include a first sub-layer and a second sub-layer, with the first light-shielding sub-part 411 located in the first sub-layer and the second light-shielding sub-part 412 located in the second sub-layer. The first light-shielding sub-part 411 and the second light-shielding sub-part 412 can be connected or not connected through vias.

[0109] As mentioned above, the light-shielding part 41 can be located between any two adjacent pixel areas 101 along the first direction X, or the light-shielding part 41 can be located between a portion of two adjacent pixel areas 101 along the first direction X. There is no limitation here, and it can be selected according to actual needs. The illustrations provided in this application embodiment only show one light-shielding part 41 for illustration.

[0110] In addition, the first sub-part 31 of the black matrix 30 is located between two adjacent pixel areas 101 along the first direction X; the orthographic projection of the light-shielding part 41 on the first substrate 11 at least partially overlaps with the orthographic projection of the first sub-part 31 on the first substrate 11.

[0111] In some embodiments, the first sub-part 31 is parallel to the signal line segment 211. Therefore, the angle between the light-shielding part 41 and the first sub-part 31 is the same as the angle between the light-shielding part 41 and the signal line segment 211.

[0112] In some embodiments, the first sub-part 31 may not be parallel to the signal line segment 211, but the orthographic projection of the signal line segment 211 on the first substrate 11 is located within the orthographic projection of the first sub-part 31 on the first substrate 11.

[0113] In some embodiments of this application, such as Figure 9 As shown, the first sub-part 31 includes a first side 311 and a second side 312 disposed opposite to each other along the first direction X, and the direction in which the first side 311 points to the second side 312 is the first direction.

[0114] The black matrix 30 also includes a second sub-part 32 connected to the first sub-part 31, the second sub-part 32 extending into the pixel area 101 located on the first side 311 of the first sub-part 31.

[0115] In some embodiments, the second sub-part 32 partially overlaps with the center of the pixel region 101 along the first direction X; further, the line connecting the center of the second sub-part 32 and the center of the pixel region 101 is parallel to the first direction X.

[0116] In other embodiments of this application, such as Figure 10 As shown, the black matrix 30 also includes a third sub-part 33 connected to the first sub-part 31, the third sub-part 33 extending into the pixel area 101 located in the second side 312 opposite to the first side 311 of the first sub-part 31.

[0117] In some embodiments, the third sub-part 33 partially overlaps with the center of the pixel region 101 along the first direction X; further, the line connecting the center of the third sub-part 33 and the center of the pixel region 101 is parallel to the first direction X.

[0118] It should be noted that, since the main body 511 of the pixel electrode 51 bends at the center of the pixel area 101, the combined electric field generated by the pixel electrode 51 at the bend can easily cause disorder in the deflection of liquid crystal molecules in that area, which can easily lead to light leakage and oblique light emission. In this embodiment, the second sub-part 32 and the third sub-part 33 are added to the black matrix 30 to cover the bent pixel electrode 51 at the edge of the pixel area 101, which can further block light leakage and oblique light emission and improve the contrast of the display panel.

[0119] In some embodiments, on the outer side of the bend of the pixel electrode 51, the length of light leakage at the edge of the pixel region 101 along the first direction X is less than the length along the second direction Y, and on the inner side of the bend of the pixel electrode 51, the length of light leakage at the edge of the pixel region 101 along the first direction X is greater than the length along the second direction Y. Therefore, in this embodiment, the length of the second sub-part 32 along the first direction X is less than the length of the third sub-part 33 along the first direction X, and the length of the second sub-part 32 along the second direction Y is greater than the length of the third sub-part 33 along the second direction Y, so as to effectively block light leakage and oblique light emission according to the shape of the pixel electrode 51.

[0120] In some embodiments, the ratio of the length of the second sub-part 32 along the second direction Y to the length of the third side 1011 of the pixel region 101 along the second direction Y is greater than or equal to one-third and less than or equal to one-half.

[0121] As mentioned above, the black matrix 30 can simultaneously include the second sub-part 32 and the third sub-part 33, or it can include only the second sub-part 32 or the third sub-part 33.

[0122] In some embodiments of this application, please refer to Figure 3 and Figure 11 As shown, the black matrix 30 further includes a fourth sub-part 34 that covers at least the device region 102; wherein the fourth sub-part 34 extends along the second direction Y into the adjacent pixel region 101 and covers the end portion 512 of the pixel electrode 51, that is, the orthographic projection of the end portion 512 on the first substrate 11 is located within the orthographic projection of the fourth sub-part 34 on the first substrate 11.

[0123] It is understood that since the deflection of liquid crystal molecules at the end 512 is prone to disorder, in this embodiment of the application, by having the fourth sub-part 34 cover the end 512, the uneven display phenomenon of the display panel at the end 512 can be further reduced.

[0124] In some embodiments of this application, please refer to Figure 3 and Figure 12 As shown, the black matrix 30 further includes a fourth sub-part 34 that covers at least the device region 102; wherein the fourth sub-part 34 extends along the second direction Y into the adjacent pixel region 101 and covers a portion of the end portion 512 of the pixel electrode 51, that is, the orthographic projection of a portion of the end portion 512 on the first substrate 11 is located within the orthographic projection of the fourth sub-part 34 on the first substrate 11.

[0125] It is understood that the fourth sub-part 34 can cover part of the end portion 512 near the third side 1011 and the fourth side 1012, while exposing the remaining end portion 512, thereby reducing light leakage and uneven display while ensuring the transmittance of the pixel area 101.

[0126] It should be noted that in other embodiments of this application, please refer to Figure 13 This embodiment and Figure 8 The difference in the illustrated embodiment is that the light-shielding part 41 and the signal line segment 211 can also be arranged in parallel.

[0127] Wherein, the first light-shielding sub-part 411 partially overlaps with the first line segment 2111, and the second light-shielding sub-part 412 partially overlaps with the second line segment 2112; the first light-shielding sub-part 411 is arranged parallel to the first line segment 2111, and the second light-shielding sub-part 412 is arranged parallel to the second line segment 2112.

[0128] In summary, by adding a light-shielding layer 40 to the display panel, and the light-shielding layer 40 including a light-shielding portion 41 that at least partially overlaps with the signal line 21, and the light-shielding portion 41 being at least partially located between adjacent pixel areas 101, the light-shielding effect of the black matrix 30 can be further enhanced to block light obliquely incident on the pixel area 101, reducing light leakage and lowering dark-state brightness, thereby improving the contrast of the display panel.

[0129] In addition, such as Figure 14 As shown in the embodiments of this application, a display device 70 is also provided. The display device 70 includes a backlight module 71 and a display panel 72 as described in the above embodiments, and the display panel 72 is disposed on the light-emitting side of the backlight module 71.

[0130] It is understood that since the display device 70 has the same display panel 72 as in the above embodiments, the display device 70 has the same beneficial effects as the display panel 72 described in the above embodiments, which will not be repeated here.

[0131] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0132] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0133] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0134] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a plurality of pixel areas arranged along a first direction and a second direction, wherein the first direction and the second direction intersect. The display panel also includes: First substrate; A conductive layer is disposed on the first substrate. The conductive layer includes a plurality of signal lines arranged along the first direction. A plurality of pixel regions arranged along the second direction are disposed between two adjacent signal lines. The signal lines include signal line segments located between two adjacent pixel regions along the first direction. A black matrix is ​​disposed on the side of the conductive layer away from the first substrate. The black matrix is ​​disposed at least between two adjacent pixel areas along the first direction. The black matrix includes a first sub-part located between two adjacent pixel areas along the first direction, and a second sub-part and a third sub-part connected to the first sub-part. The first sub-part is parallel to the signal line segment. The second sub-part extends into the pixel area located on a first side of the first sub-part. The third sub-part extends into the pixel area located on a second side of the first sub-part opposite to the first side. The direction from the first side to the second side is the first direction. The second sub-part partially overlaps with the center of the pixel region along the first direction, the third sub-part partially overlaps with the center of the pixel region along the first direction, the length of the second sub-part along the first direction is less than the length of the third sub-part along the first direction, and the length of the second sub-part along the second direction is greater than the length of the third sub-part along the second direction; A light-shielding layer is disposed between the first substrate and the conductive layer, or between the conductive layer and the black matrix, wherein the light-shielding layer includes a light-shielding portion located between two adjacent pixel regions along the first direction; Wherein, the orthographic projection of the light-shielding portion on the first substrate at least partially overlaps with the orthographic projection of the signal line on the first substrate, and at least a portion of the light-shielding portion extends into the pixel area.

2. The display panel according to claim 1, characterized in that, The light-shielding part is not parallel to the signal line segment.

3. The display panel according to claim 2, characterized in that, The center of the light-shielding part does not coincide with the center of the signal line segment, and the line connecting the center of the light-shielding part and the center of the signal line segment is parallel to the first direction.

4. The display panel according to claim 3, characterized in that, The light-shielding portion includes a first side and a second side disposed opposite to each other along the first direction. Between any two adjacent pixel areas along the first direction, the distance from the center of the signal line segment to the first side is greater than the distance from the center of the signal line segment to the second side.

5. The display panel according to claim 4, characterized in that, The overlapping area of ​​a pixel region located on the first side of the light-shielding part with the light-shielding part is greater than the overlapping area of ​​a pixel region located on the second side of the light-shielding part with the light-shielding part.

6. The display panel according to claim 4, characterized in that, The signal segment includes a first segment and a second segment connected together. The first segment and the second segment are connected at the center of the signal segment. The first segment and the second segment have a first included angle toward the center side of the light-shielding part and a second included angle away from the center side of the light-shielding part. The first included angle is smaller than the second included angle.

7. The display panel according to claim 6, characterized in that, The light-shielding part is parallel to the second direction, and the acute angle between the light-shielding part and the first line segment is equal to the acute angle between the light-shielding part and the second line segment.

8. The display panel according to claim 6, characterized in that, The light-shielding part intersects with the second direction. The light-shielding part includes a first light-shielding sub-part and a second light-shielding sub-part connected to each other. The first light-shielding sub-part and the second light-shielding sub-part are connected at the center of the light-shielding part. The first light-shielding sub-part overlaps with the first line segment, and the second light-shielding sub-part overlaps with the second line segment. The acute angle between the first light-shielding sub-part and the first line segment is equal to the acute angle between the second light-shielding sub-part and the second line segment.

9. The display panel according to claim 2, characterized in that, The acute angle between the light-shielding part and the signal line segment is greater than or equal to 5° and less than or equal to 15°.

10. The display panel according to claim 1, characterized in that, The light-shielding part is arranged parallel to the signal line segment.

11. The display panel according to claim 1, characterized in that, The display panel further includes a device area located between two adjacent pixel areas along the second direction, and the display panel further includes a thin-film transistor disposed on the first substrate and located within the device area, the thin-film transistor being connected to the signal line, and the black matrix further includes a fourth sub-section covering at least the device area.

12. The display panel according to claim 11, characterized in that, The display panel also includes: Multiple pixel electrodes are disposed on the side of the conductive layer away from the first substrate. The multiple pixel electrodes are disposed corresponding to multiple pixel regions. The pixel electrodes in the pixel regions are connected to the thin film transistors in the adjacent device regions along the second direction. The pixel electrode includes a main body and ends located on opposite sides of the main body along the second direction, wherein at least a portion of the ends are projected onto the first substrate in the orthographic projection of the fourth sub-part onto the first substrate.

13. The display panel according to any one of claims 1 to 10, characterized in that, The light-shielding layer is disposed between the conductive layer and the black matrix, and the display panel further includes: The second substrate is disposed on the side of the light-shielding layer away from the first substrate, and the black matrix is ​​disposed on the second substrate and located on the side of the second substrate close to the light-shielding layer; A common electrode is disposed on the side of the conductive layer away from the first substrate, and the light-shielding part is connected to the common electrode. The material of the light-shielding layer includes a metallic material. A liquid crystal layer is disposed between the common electrode and the black matrix.

14. The display panel according to any one of claims 1 to 10, characterized in that, Each of the pixel regions includes a third side and a fourth side disposed opposite to each other along the first direction, and the length of the light-shielding portion is less than the length of the third side.

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

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