Display module and display apparatus

Abstract

A display module and a display apparatus. The display module comprises a display panel, which comprises a base substrate and a plurality of sub-pixels disposed on the base substrate. The display module further comprises a light-shielding structure, which is located on a light-emitting side of the display panel, wherein the light-shielding structure comprises at least two light-shielding layers (201 / 202), which are sequentially stacked in a direction perpendicular to the base substrate, and at least one light-shielding layer comprises a plurality of light-shielding patterns, orthographic projections of the plurality of light-shielding patterns on the base substrate being located around orthographic projections, on the base substrate, of pixel opening regions corresponding to at least some of the sub-pixels, and orthographic projections of different light-shielding patterns on the base substrate being arranged at intervals around the orthographic projection of one pixel opening region on the base substrate.

Description

Display modules and display devices

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411731647.1, filed in China on November 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of display technology, and more particularly to a display module and a display device. Background Technology

[0004] With the continuous development of display technology, the application fields of display devices are becoming increasingly widespread, and people's requirements for the display quality of display products are becoming increasingly higher. Organic light-emitting diode (OLED) display devices typically use microcavity structures that adjust the red, green, and blue sub-pixels separately to achieve consistent pixel adjustment as the viewing angle changes, thereby improving the white viewing angle color shift of the device. However, since the photoluminescence spectrum (PL spectrum) of the luminescent material itself is fixed, this method has limited ability to improve the viewing angle color shift and will affect the display color gamut to a certain extent. Moreover, using other methods to adjust color shift, such as adjusting the thickness of the inner film layer of the display device and the transmittance of the cathode, will also affect the luminous performance of the device. Summary of the Invention

[0005] The purpose of this disclosure is to provide a display module and a display device.

[0006] To achieve the above objectives, this disclosure provides the following technical solution:

[0007] A first aspect of this disclosure provides a display module, including a display panel, the display panel including a substrate and a plurality of sub-pixels disposed on the substrate;

[0008] The display module further includes a light-shielding structure located on the light-emitting side of the display panel. The light-shielding structure includes at least two light-shielding layers stacked sequentially along a direction perpendicular to the substrate. The orthographic projection of the light-shielding layer on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least a portion of the sub-pixels on the substrate.

[0009] At least one of the light-shielding layers includes multiple light-shielding patterns. The orthographic projection of the multiple light-shielding patterns on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least some sub-pixels on the substrate. Around the orthographic projection of the same pixel opening area on the substrate, the orthographic projections of different light-shielding patterns on the substrate are spaced apart.

[0010] Optionally, the display module further includes a touch layer located on the light-emitting side of the display panel, the touch layer forming multiple grids;

[0011] The at least two light-shielding layers include a first light-shielding layer and at least one second light-shielding layer. The touch layer is reused as the first light-shielding layer. The orthographic projection of the grid on the substrate surrounds the orthographic projection of the corresponding pixel opening area on the substrate.

[0012] Optionally, the at least two light-shielding layers include a second light-shielding layer located between the first light-shielding layer and the display panel, or the second light-shielding layer located on the side of the first light-shielding layer facing away from the display panel.

[0013] Optionally, the at least two light-shielding layers include two second light-shielding layers, with the first light-shielding layer located between the two second light-shielding layers.

[0014] Optionally, a flat layer may be present between adjacent shading layers.

[0015] Optionally, at least one of the second light-shielding layers includes a plurality of independent edge light-shielding patterns, the orthographic projections of the plurality of edge light-shielding patterns on the substrate being distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the substrate.

[0016] Optionally, at least a portion of the edge light-shielding pattern is projected onto the substrate and located between the projections of two adjacent pixel opening regions onto the substrate. The two adjacent pixel opening regions are disposed opposite each other along a first direction, and the edge light-shielding pattern extends along a second direction, which intersects with the first direction.

[0017] Optionally, the orthographic projection of the edge light-blocking pattern on the substrate overlaps at least partially with the orthographic projection of the edge of the grid on the substrate.

[0018] Optionally, the width of the ends of the edge light-blocking pattern gradually decreases along a direction away from the center portion of the edge light-blocking pattern.

[0019] Optionally, the orthographic projection of the edge light-blocking pattern on the substrate includes at least one of the following: a club shape, a rectangle, an ellipse, and a rhombus.

[0020] Optionally, at least one second light-shielding layer includes multiple independent corner light-shielding patterns, each corner light-shielding pattern including a central portion and at least two extended portions, the at least two extended portions being coupled to the central portion, the orthographic projection of the central portion on the substrate at least partially overlapping the orthographic projection of the corner portion of the grid on the substrate; the orthographic projection of the extended portion on the substrate at least partially overlapping the orthographic projection of the edge portion of the grid on the substrate.

[0021] Optionally, in the same corner shading pattern, the angle α between two adjacent extensions satisfies: 90° ≤ α < 180°.

[0022] Optionally, the width of the extension gradually decreases along the direction away from the center.

[0023] Optionally, the extensions of the same corner light-blocking pattern have the same extension length.

[0024] Optionally, among the extensions included in the same corner light-blocking pattern, at least two extensions have different extension lengths.

[0025] Optionally, the plurality of sub-pixels includes a first color sub-pixel and a second color sub-pixel, wherein the area of ​​the pixel opening region corresponding to the first color sub-pixel is larger than the area of ​​the pixel opening region corresponding to the second color sub-pixel;

[0026] The corner light-blocking pattern includes a first extension and a second extension. The length of the first extension is greater than the length of the second extension. The orthographic projection of the first extension on the substrate is located around the orthographic projection of the pixel opening area corresponding to the first color sub-pixel on the substrate. The orthographic projection of the second extension on the substrate is located around the orthographic projection of the pixel opening area corresponding to the second color sub-pixel on the substrate.

[0027] Optionally, the plurality of sub-pixels further includes a third color sub-pixel, wherein the periphery of the pixel opening area corresponding to the third color sub-pixel on the substrate has the orthographic projection of the first extension portion on the substrate and the orthographic projection of the second extension portion on the substrate.

[0028] Optionally, the at least two light-shielding layers include two layers of the second light-shielding layer;

[0029] The second light-shielding layer near the display panel includes a plurality of independent edge light-shielding patterns. The orthographic projections of the plurality of edge light-shielding patterns on the substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the substrate.

[0030] The second light-shielding layer, located away from the display panel, includes a plurality of independent corner light-shielding patterns. Each corner light-shielding pattern includes a central portion and at least two extended portions. The at least two extended portions are respectively coupled to the central portion. The orthographic projection of the central portion on the substrate at least partially overlaps with the orthographic projection of the corner portion of the grid on the substrate. The orthographic projection of the extended portion on the substrate at least partially overlaps with the orthographic projection of the edge portion of the grid on the substrate.

[0031] Optionally, the orthographic projection of the edge light-blocking pattern on the substrate and the orthographic projection of the corner light-blocking pattern on the substrate at least partially overlap; or, the orthographic projection of the edge light-blocking pattern on the substrate and the orthographic projection of the corner light-blocking pattern on the substrate do not overlap.

[0032] Based on the above-described display module technical solution, a second aspect of this disclosure provides a display device including the above-described display module. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation of the disclosure. In the drawings:

[0034] Figure 1 is a first layout diagram of the pixel opening area and touch layer in the display module provided in an embodiment of this disclosure;

[0035] Figure 2 is a second layout diagram of the pixel opening area and touch layer in the display module provided in the embodiment of this disclosure;

[0036] Figure 3 is a schematic diagram of the color shift trajectory of the display module provided in the embodiment of this disclosure in the 90-degree longitude direction;

[0037] Figure 4 is a schematic diagram of the color shift trajectory of the display module provided in the embodiment of this disclosure in the 45-degree longitude direction;

[0038] Figure 5 is a schematic diagram of the color shift trajectory of the display module in the 90-degree longitude direction under each scheme corresponding to Table 1;

[0039] Figure 6 is a schematic diagram of the color shift trajectory of the display module in the 45-degree longitude direction under each scheme corresponding to Table 1;

[0040] Figure 7 is a first cross-sectional schematic diagram of the display module provided in an embodiment of this disclosure;

[0041] Figure 8 is a second cross-sectional schematic diagram of the display module provided in an embodiment of this disclosure;

[0042] Figure 9 is a schematic diagram of the first layout of the pixel opening area and the second light-shielding layer in the display module provided in the embodiment of this disclosure;

[0043] Figure 10 is a first layout schematic diagram of the pixel opening area, touch layer and second light-shielding layer in the display module provided in the embodiment of this disclosure;

[0044] Figure 11 is a schematic diagram of the color shift trajectory of the display module in the 90-degree longitude direction under the scheme in Figure 10;

[0045] Figure 12 is a schematic diagram of the color shift trajectory of the display module in the 45-degree longitude direction under the scheme in Figure 10;

[0046] Figure 13 is a third cross-sectional schematic diagram of the display module provided in an embodiment of this disclosure;

[0047] Figure 14 is a fourth cross-sectional schematic diagram of the display module provided in an embodiment of this disclosure;

[0048] Figures 15 to 17 are schematic diagrams of the edge shading patterns provided in the embodiments of this disclosure;

[0049] Figures 18 to 23 are schematic diagrams of corner shading patterns provided in embodiments of this disclosure;

[0050] Figure 24 is a schematic diagram of the second layout of the pixel opening area and the second light-shielding layer in the display module provided in the embodiment of this disclosure;

[0051] Figure 25 is a second layout schematic diagram of the pixel opening area, touch layer and second light-shielding layer in the display module provided in the embodiment of this disclosure;

[0052] Figure 26 is a schematic diagram of the third layout of the pixel opening area and the touch layer in the display module provided in the embodiment of this disclosure;

[0053] Figure 27 is a schematic diagram of adding a corner shading pattern to Figure 26;

[0054] Figure 28 is a fourth layout diagram of the pixel opening area and touch layer in the display module provided in the embodiment of this disclosure;

[0055] Figure 29 is a schematic diagram of adding a corner shading pattern to Figure 28. Detailed Implementation

[0056] To further illustrate the display module and display device provided in the embodiments of this disclosure, a detailed description is provided below with reference to the accompanying drawings.

[0057] Based on the problems existing in the background technology, it has been found that in display modules with FMLOC (Flexible Multi-Layer On Cell) structure, the large viewing angle offset can be improved by setting the touch layer wiring offset.

[0058] As shown in Figure 1, the orthographic projection of the touch layer 30 onto the substrate is typically located between the orthographic projections of adjacent sub-pixel opening areas (such as the pixel opening area RK corresponding to the red sub-pixel, the pixel opening area GK corresponding to the green sub-pixel, and the pixel opening area BK corresponding to the blue sub-pixel) onto the substrate, and the distance from these opening areas to the orthographic projections of each sub-pixel opening area is equal, for example, 7.5 μm. In this case, the touch layer traces are not offset, and the actual color shift trajectory in the H direction (lateral direction) is shown by the REF line in Figure 3. It should be noted that the numbers corresponding to the dashed circles represent the specifications corresponding to different viewing angles. If the touch layer 30 is offset as shown in Figure 2, that is, the orthographic projection of the touch layer 30 onto the substrate is closer to the orthographic projection pixel of the pixel opening area GK corresponding to the green sub-pixel, for example, 6 μm, and farther from the orthographic projection pixel of the pixel opening area BK corresponding to the blue sub-pixel, for example, 9 μm, the color shift trajectory in the H direction becomes the Split1 line in Figure 3. Comparing the two color shift trajectories in Figure 3, it can be seen that when the touch layer 30 offset design is adopted, the color shift at large viewing angles (such as 60° and 75°) is greatly reduced.

[0059] However, the aforementioned touch layer 30 offset design only effectively improves color shift in the H direction (i.e., longitude 90°, 270°) and V direction (vertical, i.e., longitude 0°, 180°). For oblique viewing angles (i.e., longitude 45°, 135°, 225°, 315°), as shown in Figure 4, corresponding to the two oblique color shift trajectories of the structures in Figures 1 and 2, it can be seen that even with the touch layer 30 offset design, the color shift trajectory is not improved. It is worth noting that the longitude 0° direction described in this disclosure is defined as the upward direction shown in Figure 1, i.e., the V+ direction of the display module; the longitude 90° direction is defined as the right direction shown in Figure 1, i.e., the H+ direction of the display module; the other longitude directions are derived from this. The angle θ mentioned in this case is a commonly used viewing angle in the display industry; θ = 0° is the direction perpendicular to the screen.

[0060] By simulating various scenarios including different offset distances of the touch layer 30 and different thicknesses of the organic package layer (IJP), the various schemes shown in Table 1 were obtained. The view angle offset trajectories in the 90° longitude direction for each scheme are shown in Figure 5, and the view angle offset trajectories in the 45° longitude direction for each scheme are shown in Figure 6. It can be seen that although some schemes show varying degrees of improvement in the large view angle offset in the 90° longitude direction, there is no improvement in the 75° view angle offset trajectory in the 45° longitude direction for all these schemes.

[0061] Table 1

[0062] The simulation results show that conventional solutions such as a 30° offset for the touch layer or increasing or decreasing the thickness of the organic encapsulation layer cannot effectively solve the problem of a large offset at a 45° viewing angle.

[0063] In summary, when using a 30° offset design for the touch layer, the intended improvement in large viewpoint viewpoint viewpoint offset can be achieved by moving the touch layer traces closer to or further away from the pixel opening areas corresponding to the RGB pixels. However, due to the shape limitations of the pixel opening areas and the touch layer traces, the degree of occlusion of different pixel opening areas by the touch layer traces varies at different longitude directions within the same latitude. This results in a situation where large viewpoint viewpoint offset can be improved in the H and V directions, but the large viewpoint viewpoint offset remains significant at 45°.

[0064] The specific reasons for the above problems are analyzed below:

[0065] As shown in Figure 7, a beam of light at an angle θ0 is incident from air into the display module. The projected displacement D of the touch layer traces above the light-emitting layer can be calculated as: D = ∑H i ×tanθ i

[0066] Where θ i The angle of light propagation within each film layer below the touch layer 30 can be calculated sequentially using the law of refraction, H. i The thickness of each film layer.

[0067] An incident light ray at angle θ0 in the air can project the touch layer 30 onto a certain point on the interface of the light-emitting layer. Based on the principle of reversible light path, it can be approximated that the light-emitting area blocked by the projection does not contribute to the outgoing light ray at angle θ0 (the effects of the slope reflection of the pixel boundary layer and the reflection of the interfaces of each film layer are temporarily ignored here).

[0068] More specifically, based on the thickness of each film layer and the refractive index of the material, the projection displacement of the touch layer traces on the emissive layer interface under different wavelengths and angles of incident light can be calculated, as shown in Table 2. The distances between the edges of the RGB sub-pixels and the edges of the touch layer traces in the Split2 bias scheme of touch layer 30 are shown in Table 3. Combining Tables 2 and 3, the range of angle θ in which the pixel opening area is obscured by the projection of touch layer 30 can be obtained.

[0069] Table 2

[0070] Table 3

[0071] The angle range corresponding to the solid lines in Table 2 is the angle range in which the corresponding pixel opening area is occluded in the 90° longitude direction.

[0072] The pixel aperture area RK corresponding to the red subpixel begins to be occluded around 65°. As the angle increases, the projection displacement of the touch layer traces becomes larger, with the occluded area gradually increasing from 65° to 89°. The pixel aperture area GK corresponding to the green subpixel begins to be occluded around 55°, with the occluded area gradually increasing from 55° to 89°. The pixel aperture area BK corresponding to the blue subpixel is not occluded. This results in a decrease in the proportion of green and red light at large viewing angles, a downward shift in the color shift trajectory, and a reduction in JNCD.

[0073] The angle range corresponding to the dashed boxes in Table 2 is the angle range in which the corresponding pixel opening area is occluded in the 45° longitude direction.

[0074] The pixel aperture area RK corresponding to the red sub-pixel begins to be occluded around 45°, and the occlusion area stops increasing around 65° (touch layer trace width 3μm). The pixel aperture area GK corresponding to the green sub-pixel begins to be occluded around 40°, and the occlusion area stops increasing around 60°. The pixel aperture area BK corresponding to the blue sub-pixel begins to be occluded around 60°, and the occlusion area gradually increases up to 89°.

[0075] The main difference between the 90° and 45° longitude directions is that, at 45° longitude, after an angle θ of 60°, the pixel aperture area BK corresponding to the blue sub-pixel begins to be occluded, and the occlusion area gradually increases with the angle θ. However, the occluded areas of the pixel aperture areas RK corresponding to the red sub-pixel and GK corresponding to the green sub-pixel remain unchanged after 60° (around 60°). Therefore, the proportion of blue gradually decreases, while the proportions of red and green light do not decrease further, resulting in a shift in the perceived color bias towards the yellow-green direction.

[0076] The above analysis neglects the reflection from the pixel-defining layer slope and the reflection from the interfaces of each film layer. If these factors are considered, the impact becomes more complex, but the overall trend basically conforms to the above analysis. Through modeling and simulation, the color shift trajectories in the 90° and 45° longitude directions are shown in Split2 of Figures 5 and 6, respectively. That is, the color shift is significantly improved at large viewing angles in the 90° longitude direction, but in the 45° longitude direction, the color shift is improved for θ≤60°, while the color shift increases again at 75°. This conclusion is consistent with the above analysis. Similarly, the above analysis method can be used to explain the color shift trajectory changes of different touch layer 30 offset schemes from Split1 to Split9 in Figures 5 and 6, which will not be elaborated here.

[0077] Please refer to Figures 8 to 10, 13 and 14. This disclosure provides a display module, including a display panel, the display panel including a substrate and a plurality of sub-pixels disposed on the substrate;

[0078] The display module further includes a light-shielding structure located on the light-emitting side of the display panel. The light-shielding structure includes at least two light-shielding layers (such as a first light-shielding layer 201 and a second light-shielding layer 202) stacked sequentially along a direction perpendicular to the substrate. The orthogonal projection of the light-shielding layer on the substrate is located around the orthogonal projection of at least some of the pixel opening areas corresponding to the sub-pixels (such as the pixel opening area RK corresponding to the red sub-pixel, the pixel opening area GK corresponding to the green sub-pixel, and the pixel opening area BK corresponding to the blue sub-pixel) on the substrate.

[0079] At least one of the light-shielding layers includes multiple light-shielding patterns (e.g., edge light-shielding pattern 202a, corner light-shielding pattern 202b). The orthographic projection of the multiple light-shielding patterns on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least some sub-pixels on the substrate. Around the orthographic projection of the same pixel opening area on the substrate, the orthographic projections of different light-shielding patterns on the substrate are spaced apart.

[0080] More specifically, around the orthographic projection of the same pixel opening area, the orthographic projections of each edge light-blocking pattern 202a on the substrate are spaced apart, meaning that each edge light-blocking pattern 202a does not form a closed surrounding structure. Around the orthographic projection of the same pixel opening area, the orthographic projections of each corner light-blocking pattern 202b on the substrate are spaced apart, meaning that each corner light-blocking pattern 202b does not form a closed surrounding structure.

[0081] It should be noted that Figure 8 illustrates the driving backplane BP, pixel delimiting layer PDL, green light-emitting functional layer ELG, blue light-emitting functional layer, first inorganic encapsulation layer CVD1, organic encapsulation layer IJP, and second inorganic encapsulation layer CVD2. These structures all belong to the display panel.

[0082] For example, the display panel includes an organic light-emitting diode (OLED) display panel, which includes a plurality of sub-pixels. Each sub-pixel includes a sub-pixel driving circuit and a light-emitting element. The anode of the light-emitting element is coupled to the sub-pixel driving circuit. The display panel also includes a pixel defining layer, which defines a pixel opening region corresponding to each sub-pixel. The light-emitting functional layer of the light-emitting element is located within the corresponding pixel opening region. The display panel also includes a cathode layer and an encapsulation layer. The cathode layer is located between the light-emitting functional layer and the encapsulation layer. The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, which are sequentially stacked along a direction away from the substrate.

[0083] For example, the orthographic projection of the light-shielding layer on the substrate is located around the orthographic projection of the pixel opening area corresponding to each sub-pixel on the substrate.

[0084] For example, to reduce the color shift JNCD value after θ > 60°, the proportions of red, green, and blue light need to decrease monotonically with increasing θ angle, meaning the occlusion area needs to increase monotonically. By coordinating at least two occlusion layers in the occlusion structure, the occlusion area of ​​the pixel aperture region RK corresponding to the red sub-pixel and the pixel aperture region GK corresponding to the green sub-pixel can be monotonically increased after θ > 60°.

[0085] For example, by adjusting the height of each light-shielding layer, the shape and size of the light-shielding pattern in the light-shielding layer, and the horizontal arrangement of the light-shielding pattern, the degree of occlusion of the pixel opening area corresponding to various color sub-pixels by each light-shielding layer under a large viewing angle in a specific longitude direction can be adjusted, thereby achieving the goal of improving the large viewing angle deviation in a specific longitude direction.

[0086] For example, when setting the height of the light-shielding layer, the desired height can be achieved by simultaneously adjusting the thickness of other film layers. For instance, reducing the thickness of the organic encapsulation layer allows the light-shielding layer closest to the display panel to be closer to the pixel opening area, thereby adjusting its occlusion of the pixel opening area. For example, reducing the thickness of the organic encapsulation layer from 12 μm to 9 μm.

[0087] For example, when setting the display module to include the light-shielding structure, a planarization layer OC can be added between adjacent light-shielding layers in the light-shielding structure to adjust the optical path of light. For example, the thickness of the planarization layer OC is 3μm, which can fill and supplement the optical path reduced by the organic encapsulation layer.

[0088] As can be seen from the specific structure of the display module described above, in the display module provided in this embodiment, a light-shielding structure including at least two light-shielding layers is provided on the light-emitting side of the display panel. The orthographic projection of each light-shielding layer on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least some sub-pixels on the substrate. At the same time, at least one light-shielding layer is provided, including multiple light-shielding patterns (such as: edge light-shielding pattern 202a, corner light-shielding pattern 202b). The orthographic projection of the multiple light-shielding patterns on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least some sub-pixels on the substrate. Around the orthographic projection of the same pixel opening area on the substrate, the orthographic projections of different light-shielding patterns on the substrate are arranged at intervals. In the display module provided in this embodiment, the layout position, layout height, and specific shape of each light-shielding layer can be obtained through theoretical calculation and optical simulation. It can be realized that when the display module is viewed from a specific angle, each light-shielding layer cooperates with each other to partially block the light emitted by at least some sub-pixels, so as to adjust the color shift of the display module under the specific angle.

[0089] Furthermore, in the display module provided in this embodiment, the layout position, layout height, and specific shape of each light-shielding layer can be obtained through theoretical calculation and optical simulation. This enables the adjustment of the degree of occlusion of the pixel opening area corresponding to various color sub-pixels by the light-shielding structure at different θ angles in the longitude directions of 45°, 135°, 225°, and 315°, thereby achieving the goal of adjusting the large viewing angle deviation in the longitude directions of 45°, 135°, 225°, and 315°.

[0090] Therefore, in the display module provided in this embodiment, by providing a light-shielding structure including at least two light-shielding layers on the light-emitting side of the display panel, it is possible to adjust the color shift under various viewing angles.

[0091] Please refer to Figures 8 to 10, 13 and 14, and Figures 24 to 29. In some embodiments, the display module further includes a touch layer 30, which is located on the light-emitting side of the display panel and forms a plurality of grids. The at least two light-shielding layers include a first light-shielding layer 201 and at least one second light-shielding layer 202. The touch layer 30 is reused as the first light-shielding layer 201. The orthographic projection of the grids on the substrate surrounds the orthographic projection of the corresponding pixel opening area on the substrate.

[0092] For example, the touch layer 30 is made of a light-shielding metal material, but is not limited to this.

[0093] For example, the second light-shielding layer 202 shown includes a black matrix layer, but is not limited to this.

[0094] The above configuration reuses the touch layer 30 as the first light-shielding layer 201, which helps to simplify the overall structure of the display module and the manufacturing process of the display module.

[0095] As shown in Figures 8 to 10, in some embodiments, the at least two light-shielding layers include a second light-shielding layer 202, which is located between the first light-shielding layer 201 and the display panel. Exemplarily, the manufacturing process of the display module is as follows: Multiple sub-pixels are fabricated on a substrate, including fabricating a sub-pixel driving circuit with transistors and depositing light-emitting elements of different colors; then, a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer are fabricated sequentially, the first inorganic encapsulation layer including, but not limited to, three inorganic sub-film layers; a second light-shielding layer 202 is fabricated on the side of the encapsulation layer facing away from the substrate; a first planarization layer OC is fabricated on the side of the second light-shielding layer 202 facing away from the substrate; a buffer layer BUF, a touch layer 30, and a second planarization layer OC are fabricated sequentially on the side of the first planarization layer OC facing away from the substrate.

[0096] In some embodiments, when the at least two light-shielding layers include a second light-shielding layer 202 located between the first light-shielding layer 201 and the display panel, as shown in Table 4, the calculated projection displacements of the second light-shielding layer 202 and the touch layer 30 at different θ angles are illustrated. As can be seen from Table 4, under light conditions where θ≥60°, the difference between the projection displacement of the touch layer 30 and the projection displacement of the second light-shielding layer 202 is less than 3μm (the width of the touch layer 30), meaning that the projections of the second light-shielding layer 202 and the touch layer 30 always overlap. The second light-shielding layer 202 is displaced by 5.86 μm outside the projection of the θ = 89° light, failing to reach the edges of the pixel opening area RK corresponding to the red sub-pixel and the pixel opening area GK corresponding to the green sub-pixel (which require displacements of 7 μm and 6 μm respectively). This means that the occlusion area of ​​the pixel opening areas RK and GK corresponding to the red and green sub-pixels monotonically increases in the 60° < θ < 89° range, while the red and green light areas monotonically decrease. Through modeling and simulation, the color shift trajectory results are shown in Implementation Case 1 in Figures 11 and 12. This embodiment significantly improves the 75° viewpoint color shift in the longitude directions of 45°, 135°, 225°, and 315°.

[0097] Table 4

[0098] It should be noted that while increasing the width of the touch layer 30 could improve the insufficient occlusion of the pixel opening area RK corresponding to the red sub-pixels and the pixel opening area GK corresponding to the green sub-pixels in the 45°, 135°, 225°, and 315° directions, widening the touch layer 30 would simultaneously affect color shift in the 0°, 90°, 180°, and 270° directions, and would also reduce screen transmittance. The display module provided in the above embodiment not only improves color shift in the 45°, 135°, 225°, and 315° directions, but also does not affect color shift in the 0°, 90°, 180°, and 270° directions or screen transmittance.

[0099] As shown in Figure 13, in some embodiments, the at least two light-shielding layers include a second light-shielding layer 202, which is located on the side of the first light-shielding layer 201 facing away from the display panel. Exemplarily, the manufacturing process of the display module is as follows: after fabricating the encapsulation layer, a touch layer 30 is fabricated on the side of the encapsulation layer facing away from the substrate; a first planarization layer OC is fabricated on the side of the touch layer 30 facing away from the substrate; and a buffer layer BUF, a second light-shielding layer 202, and a second planarization layer OC are sequentially fabricated on the side of the first planarization layer OC facing away from the substrate.

[0100] It is worth noting that swapping the positions of the touch layer 30 and the second light-shielding layer 202 can achieve the same beneficial effects as described in the above embodiments, which will not be elaborated here.

[0101] As shown in Figure 13, in some embodiments, the at least two light-shielding layers include two second light-shielding layers 202, with the first light-shielding layer 201 located between the two second light-shielding layers 202. Exemplarily, the manufacturing process of the display module is as follows: After the encapsulation layer is fabricated, a first second light-shielding layer 202 is fabricated on the side of the encapsulation layer facing away from the substrate; a first planarization layer OC is fabricated on the side of the first planarization layer OC facing away from the substrate; a first buffer layer BUF is fabricated on the side of the first buffer layer BUF facing away from the substrate; a touch layer 30 is fabricated on the side of the touch layer 30 facing away from the substrate; a second planarization layer OC is fabricated on the side of the second planarization layer OC facing away from the substrate; a second buffer layer BUF is fabricated on the side of the second buffer layer BUF facing away from the substrate; a second second light-shielding layer 202 is fabricated on the side of the second second light-shielding layer 202 facing away from the substrate; and a third planarization layer OC is fabricated on the side of the second second light-shielding layer 202 facing away from the substrate.

[0102] It is worth noting that when the pixel boundary gap between adjacent pixel opening areas is large, and the projection displacement formed by only one second light-shielding layer 202 and touch layer 30 is insufficient, at least two second light-shielding layers 202 can be set. Moreover, for display modules that do not include touch layer 30, the goal of improving large viewing angle deviation in a specific longitude direction can be achieved by adopting a design of double or multiple second light-shielding layers 202, adjusting the height position of different second light-shielding layers 202, the shape and size of the light-shielding patterns in the second light-shielding layers 202, and the horizontal arrangement position of the light-shielding patterns in the second light-shielding layers 202.

[0103] The greater the distance between the light-shielding layer and the substrate, the greater the projected displacement of the light-shielding layer, the smaller the starting angle for blocking the pixel opening area, and the smaller the cutoff angle at which the blocked area does not increase when the width of the light-shielding pattern in the light-shielding layer is constant. For specific color shift situations, the degree of blocking of the pixel opening area corresponding to each color sub-pixel by the first light-shielding layer 201 and the second light-shielding layer 202 at different θ angles can be adjusted according to actual needs. This can be achieved by adjusting the height position of the light-shielding layer, including but not limited to setting the second light-shielding layer 202 to the side of the first light-shielding layer 201 away from the substrate. Furthermore, the second light-shielding layer 202 can have two or more layers. When the second light-shielding layer 202 has two or more layers, the touch layer 30 is not a necessary film layer.

[0104] In the display module provided in the above embodiments, by providing one or at least two second light-shielding layers 202 above or below the touch layer 30, the large viewing angle color shift in the target direction (e.g., longitude directions of 45°, 135°, 225°, and 315°) can be improved without affecting the screen transmittance. Simultaneously, even without the touch layer 30, the large viewing angle color shift in different longitude directions can be improved by designing two or more layers of second light-shielding layers 202.

[0105] It is worth noting that since the touch layer 30 and each of the second light-shielding layers 202 form a stacked structure, the above design will not change the original screen transmittance, and the passive optical characteristics of the product will remain essentially unchanged. Furthermore, the above design can be implemented using existing processes and equipment.

[0106] As shown in Figures 2, 9, 10, and 15 to 17, in some embodiments, at least one second light-shielding layer 202 includes a plurality of independent edge light-shielding patterns 202a. The orthographic projections of the plurality of edge light-shielding patterns 202a on the substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the substrate.

[0107] For example, at least a portion of the edge light-shielding pattern 202a is projected onto the substrate and is located between the projections of two adjacent pixel opening regions onto the substrate. The two adjacent pixel opening regions are disposed opposite each other along a first direction, and the edge light-shielding pattern 202a extends along a second direction that intersects with the first direction.

[0108] For example, the orthographic projection of the edge light-blocking pattern 202a on the substrate overlaps at least partially with the orthographic projection of the edge 301 of the grid on the substrate.

[0109] For example, the orthographic projection of the edge light-blocking pattern 202a on the substrate is located inside the orthographic projection of the edge portion 301 of the grid on the substrate.

[0110] For example, the extension direction of the edge shading pattern 202a is the same as the extension direction of the edge 301 of the overlapping grid, but it is not limited to this.

[0111] For example, the shape of the orthographic projection of the edge light-blocking pattern 202a on the substrate is substantially the same as the shape of the orthographic projection of the edge 301 of the overlapping grid on the substrate.

[0112] For example, the width of the end of the edge light-blocking pattern 202a gradually decreases along the direction away from the center portion of the edge light-blocking pattern 202a. Narrowing the end of the edge light-blocking pattern 202a in the manner described above can reduce the occlusion of the end in the longitude direction at that location. This arrangement is beneficial for reducing occlusion in the longitude directions of 0°, 90°, 180°, and 270°.

[0113] For example, the orthographic projection of the edge light-blocking pattern 202a on the substrate includes at least one of the following: club-shaped, rectangular, elliptical, and rhomboid. For instance, as shown in FIG9, the rectangular edge light-blocking pattern 202a becomes a club-shaped edge light-blocking pattern 202a after its width at the ends, and the club-shaped edge light-blocking pattern 202a is distributed along the four sides of the pixel along the directions of longitude 45°, 135°, 225°, and 315°.

[0114] It is worth noting that the design principle of the edge light-blocking pattern 202a is to ensure that it functions in the longitude direction where color shift adjustment is needed, while minimizing its effect on the longitude direction where color shift adjustment is not required. For example, the color shift in the longitude directions of 0°, 90°, 180°, and 270° has already been adjusted to a relatively good state by the offset of the touch layer 30. Therefore, the design of the second light-blocking layer 202 should consider reducing the obstruction in the longitude directions of 0°, 90°, 180°, and 270°. In practical applications, the shape, length, width, or narrowing of the edge light-blocking pattern 202a can be adjusted according to the specific degree of obstruction required for the pixel opening area corresponding to various color sub-pixels. The suitability of the shape can be determined through optical simulation.

[0115] The above embodiments, by adjusting the shape and length of the edge light-blocking pattern 202a, can reduce the difference in large viewing angle angular deviation in various longitude directions. The degree of occlusion can be adjusted by adjusting the length of the edge light-blocking pattern 202a in its extension direction (e.g., direction B). The shorter the length, the less impact it has on the longitude directions of 0°, 90°, 180°, and 270°. If there are requirements for product transmittance, the width of the edge light-blocking pattern 202a along direction A should be near the line width of the edge 301 of the touch layer 30 grid, or should not exceed the line width of the edge 301 of the touch layer 30 grid by too much, so as not to reduce the screen transmittance.

[0116] As shown in Figures 18 to 29, in some embodiments, at least one second light-shielding layer 202 includes a plurality of independent corner light-shielding patterns 202b. Each corner light-shielding pattern 202b includes a central portion Z1 and at least two extended portions Y1. The at least two extended portions Y1 are respectively coupled to the central portion Z1. The orthographic projection of the central portion Z1 on the substrate at least partially overlaps with the orthographic projection of the corner portion 302 of the grid on the substrate. The orthographic projection of the extended portion Y1 on the substrate at least partially overlaps with the orthographic projection of the edge portion 301 of the grid on the substrate.

[0117] For example, the corner light-blocking pattern 202b includes a central portion Z1 and at least two extended portions Y1 formed as an integral structure.

[0118] For example, the orthographic projection of the central portion Z1 on the substrate is located inside the orthographic projection of the corner portion 302 of the grid on the substrate; the orthographic projection of the extended portion Y1 on the substrate is located inside the orthographic projection of the edge portion 301 of the grid on the substrate.

[0119] For example, the shape of the orthographic projection of the corner light-blocking pattern 202b on the substrate is substantially the same as the shape of the orthographic projection of the overlapping grid portion on the substrate.

[0120] For example, in the same corner light-blocking pattern 202b, the angle α between two adjacent extensions Y1 satisfies: 90° ≤ a < 180°; for example, a can take values ​​of 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, etc., but is not limited to these. It is worth noting that in some cases, 45° ≤ a < 180° can also be set.

[0121] For example, as shown in Figures 18 to 21, the corner light-blocking pattern 202b includes four extended portions Y1, with adjacent extended portions Y1 forming a 90° angle, forming a cross shape; or, as shown in Figure 22, the corner light-blocking pattern 202b includes three extended portions Y1, with some adjacent extended portions Y1 forming a 90° angle and others forming a 180° angle, forming a T-shape; or, as shown in Figure 23, the corner light-blocking pattern 202b includes three extended portions Y1, with adjacent extended portions Y1 forming a 120° angle, forming a Y-shaped pattern.

[0122] It is worth noting that the selection of the aforementioned corner shading pattern 202b can be determined by the pixel arrangement method. For example, when using the sRGB pixel arrangement method, the corner shading pattern 202b is set to a T-shape, and when using the Delta pixel arrangement method, the corner shading pattern 202b is set to a Y-shape.

[0123] For example, the extension Y1 may include rectangles, trapezoids, pentagons, partial ellipses, etc., but is not limited to these.

[0124] For example, the width of the extension Y1 gradually decreases along the direction away from the center Z1. For example, at least part of the end of the extension Y1 away from the center Z1 is narrowed in the manner described above; or, all the ends of the extension Y1 away from the center Z1 are narrowed.

[0125] For example, the extension lengths of each extension Y1 included in the same corner light-blocking pattern 202b are the same.

[0126] For example, among the extensions Y1 included in the same corner light-blocking pattern 202b, at least two extensions Y1 have different extension lengths.

[0127] For example, as shown in Figures 24 and 25, the plurality of sub-pixels includes a first color sub-pixel and a second color sub-pixel, the area of ​​the pixel opening region corresponding to the first color sub-pixel is larger than the area of ​​the pixel opening region corresponding to the second color sub-pixel; the corner light-blocking pattern 202b includes a first extension Y11 and a second extension Y12, the length of the first extension Y11 is greater than the length of the second extension Y12, the orthographic projection of the first extension Y11 on the substrate is located around the orthographic projection of the pixel opening region corresponding to the first color sub-pixel on the substrate, and the orthographic projection of the second extension Y12 on the substrate is located around the orthographic projection of the pixel opening region corresponding to the second color sub-pixel on the substrate.

[0128] For example, the corner light-blocking pattern 202b includes two first extensions Y11 and two second extensions Y12. The two first extensions Y11 are adjacent, and the angle between the extension directions of the two first extensions Y11 is 90°. The two second extensions Y12 are adjacent, and the angle between the extension directions of the two second extensions Y12 is 90°. The angle between adjacent first extensions Y11 and second extensions Y12 is 90°, but it is not limited to this.

[0129] For example, the distance between the ends of the two first extensions Y11 coupled to the central part Z1 is greater than the distance between the ends of the two second extensions Y12 coupled to the central part Z1. The above arrangement can better match the size of the pixel opening area to be blocked by the extension Y1, thereby better improving the color shift problem.

[0130] For example, the central portion Z1 located at the edge between the two first extension portions Y11, and the central portion Z1 located at the edge between the two second extension portions Y12, can be a straight line design or an arc design closer to the pixel opening area, but is not limited to this.

[0131] For example, the ends of the first extension Y11 and the second extension Y12 may be narrowed or not narrowed as needed.

[0132] The above setting method can achieve a larger area of ​​occlusion for the large-sized pixel opening area corresponding to the first color sub-pixel, and a smaller area of ​​occlusion for the small-sized pixel opening area corresponding to the first color sub-pixel. This enables adaptive occlusion of pixel opening areas of different sizes in the 0°, 90°, 180°, and 270° directions, thereby further improving the color shift effect.

[0133] For example, as shown in Figures 24 and 25, the plurality of sub-pixels also includes a third color sub-pixel, and the periphery of the pixel opening area corresponding to the third color sub-pixel on the substrate has the orthographic projection of the first extension Y11 on the substrate and the orthographic projection of the second extension Y12 on the substrate.

[0134] For example, the first color sub-pixel includes a blue sub-pixel, the second color sub-pixel includes a red sub-pixel, and the third color sub-pixel includes a green sub-pixel.

[0135] Based on the shape of the pixel opening area and the arrangement of the touch layer 30 and the light-shielding layer, it can be seen that along the side length direction of the pixel opening area (e.g., longitude 45°, 135°, 225°, 315°), the edge 301 of the grid in the touch layer 30 and the edge light-shielding pattern 202a in the second light-shielding layer 202 are closer to the pixel opening area. Along the corner direction of the pixel opening area (e.g., 0°, 90°, 180°, 270°), the edge 301 of the grid in the touch layer 30 and the edge light-shielding pattern 202a in the second light-shielding layer 202 are farther from the pixel opening area.

[0136] As the angle θ increases, the edges 301 of the grid in the touch layer 30 and the edge occlusion pattern 202a in the second occlusion layer 202 first occlude the pixel opening area along the length of the edge, and then along the corner direction. When the pixel boundary gap between adjacent pixel opening areas is large, there may be occlusion along the length of the edge but no occlusion in the corner direction. If, in this case, the large viewing angle offset is adjusted to a better state through the offset of the touch layer 30 and the second occlusion layer 202, the large viewing angle offset will still be large in the corner direction due to the lack of occlusion.

[0137] In the display module provided in the above embodiments, by setting at least one second light-shielding layer 202 including the plurality of independent corner light-shielding patterns 202b, the plurality of corner light-shielding patterns 202b can be distributed in the corner direction of the pixel opening area, thereby achieving the blocking of the pixel opening area along the corner direction and thus achieving the color shift adjustment in the corner direction of the pixel opening area.

[0138] In some embodiments, the at least two light-shielding layers include two layers of the second light-shielding layer;

[0139] The second light-shielding layer near the display panel includes a plurality of independent edge light-shielding patterns 202a. The orthographic projections of the plurality of edge light-shielding patterns 202a on the substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the substrate.

[0140] The second light-shielding layer, located away from the display panel, includes a plurality of independent corner light-shielding patterns 202b. Each corner light-shielding pattern 202b includes a central portion Z1 and at least two extended portions Y1. The at least two extended portions Y1 are respectively coupled to the central portion Z1. The orthographic projection of the central portion Z1 on the substrate at least partially overlaps with the orthographic projection of the corner portion of the grid on the substrate. The orthographic projection of the extended portion Y1 on the substrate at least partially overlaps with the orthographic projection of the edge portion of the grid on the substrate.

[0141] For example, in two adjacent light-shielding layers, the light-shielding layer closer to the display panel includes an edge light-shielding pattern 202a, and the light-shielding layer farther from the display panel includes a corner light-shielding pattern 202b.

[0142] For example, in two adjacent second light-shielding layers 202, the second light-shielding layer 202 closer to the display panel includes an edge light-shielding pattern 202a, and the second light-shielding layer 202 farther from the display panel includes a corner light-shielding pattern 202b.

[0143] For example, the orthographic projection of the edge light-blocking pattern 202a on the substrate and the orthographic projection of the corner light-blocking pattern 202b on the substrate at least partially overlap; or, the orthographic projection of the edge light-blocking pattern 202a on the substrate and the orthographic projection of the corner light-blocking pattern 202b on the substrate do not overlap.

[0144] It is worth noting that the height of the second light-shielding layer 202, including the corner light-shielding pattern 202b, can be set above the second light-shielding layer 202, including the edge light-shielding pattern 202a, or above the touch layer 30. Setting the second light-shielding layer 202, including the corner light-shielding pattern 202b, at a higher height can achieve a greater projection displacement, thereby supplementing the occlusion effect in the corner direction of the pixel opening area, and thus achieving color shift adjustment in the corner direction of the pixel opening area.

[0145] The above settings can achieve similar occlusion effects and color difference adjustment effects at various azimuth angles, thus more effectively improving the color cast function.

[0146] This disclosure also provides a display device, including the display module provided in the above embodiments.

[0147] It should be noted that the display device can be any product or component with display function, such as a television, monitor, digital photo frame, mobile phone, or tablet computer. The display device also includes flexible circuit boards, printed circuit boards, and backplanes.

[0148] In the display module provided in the above embodiments, the layout position, layout height, and specific shape of the light-shielding pattern of each light-shielding layer can be obtained through theoretical calculations and optical simulations. This allows the light-shielding layers to cooperate with each other to partially block the light emitted by at least some sub-pixels when the display module is viewed from a specific angle, thereby adjusting the color shift of the display module at that specific angle. Furthermore, in the display module provided in the above embodiments, the layout position, layout height, and specific shape of each light-shielding layer can be obtained through theoretical calculations and optical simulations. This allows the light-shielding structure to adjust the degree of blocking of the pixel opening area corresponding to various color sub-pixels at different angles θ in the longitude directions of 45°, 135°, 225°, and 315°, thereby achieving the goal of adjusting the color shift at different large viewing angles such as 45°, 135°, 225°, and 315°. Therefore, in the display module provided in the above embodiments, by providing a light-shielding structure including at least two light-shielding layers on the light-emitting side of the display panel, color shift adjustment at various viewing angles can be achieved.

[0149] The display device provided in this disclosure, when including the above-described display module, also has the above-described beneficial effects, which will not be repeated here.

[0150] It should be noted that "the structure extends in a certain direction" means that the structure includes a main part and a secondary part connected to the main part. The main part is a line, line segment, or strip-shaped body. The main part extends in a certain direction, and the length of the main part extending in a certain direction is greater than the length of the secondary part extending in other directions.

[0151] It should be noted that, in the embodiments of this disclosure, "same layer" can refer to film layers located on the same structural layer. Alternatively, for example, film layers located on the same layer can be layer structures formed by using the same film deposition process to form a specific pattern, and then patterning the film layer using the same photomask through a single patterning process. Depending on the specific pattern, the single patterning process may include multiple exposure, development, or etching processes, and the specific pattern in the formed layer structure can be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0152] In the various method embodiments of this disclosure, the sequence numbers of each step are not intended to limit the order of the steps. For those skilled in the art, any changes in the order of the steps are within the scope of protection of this disclosure without any creative effort.

[0153] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments are basically similar to the product embodiments, so the description is relatively simple, and the relevant parts can be referred to the description of the product embodiments.

[0154] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure 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 “connection,” “coupling,” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “above,” “below,” “left,” and “right” are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes. It is understood that when an element such as a layer, film, region, or substrate is referred to as being “above” or “below” another element, the element may be located “directly” above or below the other element, or there may be intermediate elements present. In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. The above descriptions are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display module, comprising a display panel, the display panel including a substrate and a plurality of sub-pixels disposed on the substrate; The display module further includes a light-shielding structure located on the light-emitting side of the display panel. The light-shielding structure includes at least two light-shielding layers stacked along a direction perpendicular to the substrate. The orthographic projection of the light-shielding layer on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least a portion of the sub-pixels on the substrate. At least one of the light-shielding layers includes multiple light-shielding patterns. The orthographic projection of the multiple light-shielding patterns on the substrate is located around the orthographic projection of the pixel opening area corresponding to at least some sub-pixels on the substrate. Around the orthographic projection of the same pixel opening area on the substrate, the orthographic projections of different light-shielding patterns on the substrate are spaced apart.

2. The display module according to claim 1, wherein, The display module also includes a touch layer, which is located on the light-emitting side of the display panel and forms multiple grids. The at least two light-shielding layers include a first light-shielding layer and at least one second light-shielding layer. The touch layer is reused as the first light-shielding layer. The orthographic projection of the grid on the substrate surrounds the orthographic projection of the corresponding pixel opening area on the substrate.

3. The display module according to claim 2, wherein, The at least two light-shielding layers include a second light-shielding layer located between the first light-shielding layer and the display panel, or the second light-shielding layer located on the side of the first light-shielding layer facing away from the display panel.

4. The display module according to claim 2, wherein, The at least two light-shielding layers include two second light-shielding layers, with the first light-shielding layer located between the two second light-shielding layers.

5. The display module according to claim 2, wherein, There is a flat layer between adjacent shading layers.

6. The display module according to any one of claims 2 to 5, wherein, At least one second light-shielding layer includes multiple independent edge light-shielding patterns, the orthographic projections of the multiple edge light-shielding patterns on the substrate being distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the substrate.

7. The display module according to claim 6, wherein, At least a portion of the edge light-shielding pattern is projected onto the substrate in orthogonal projection, located between the orthogonal projections of two adjacent pixel opening regions onto the substrate. The two adjacent pixel opening regions are disposed opposite each other along a first direction, and the edge light-shielding pattern extends along a second direction, which intersects with the first direction.

8. The display module according to claim 6, wherein, The orthographic projection of the edge light-blocking pattern on the substrate overlaps at least partially with the orthographic projection of the edge of the grid on the substrate.

9. The display module according to claim 6, wherein, Along a direction away from the center of the edge light-blocking pattern, the width of the ends of the edge light-blocking pattern gradually decreases.

10. The display module according to claim 6, wherein, The orthographic projection of the edge light-blocking pattern on the substrate includes at least one of the following: club-shaped, rectangular, elliptical, and rhomboid shapes.

11. The display module according to any one of claims 2 to 5, wherein, At least one second light-shielding layer includes a plurality of independent corner light-shielding patterns, each corner light-shielding pattern including a central portion and at least two extended portions, the at least two extended portions being coupled to the central portion respectively, and the orthographic projection of the central portion on the substrate at least partially overlapping the orthographic projection of the corner portion of the grid on the substrate. The orthographic projection of the extension portion on the substrate at least partially overlaps with the orthographic projection of the edge portion of the mesh on the substrate.

12. The display module according to claim 11, wherein, In the same corner shading pattern, the angle α between two adjacent extensions satisfies: 90°≤a<180°.

13. The display module according to claim 11, wherein, The width of the extension gradually decreases along the direction away from the center.

14. The display module according to claim 11, wherein, The extension lengths of all extensions included in the same corner light-blocking pattern are the same.

15. The display module according to claim 11, wherein, In the same corner shading pattern, at least two of the extended portions have different extension lengths.

16. The display module according to claim 15, wherein, The plurality of sub-pixels includes a first color sub-pixel and a second color sub-pixel, wherein the area of ​​the pixel aperture region corresponding to the first color sub-pixel is larger than the area of ​​the pixel aperture region corresponding to the second color sub-pixel; The corner light-blocking pattern includes a first extension and a second extension. The length of the first extension is greater than the length of the second extension. The orthographic projection of the first extension on the substrate is located around the orthographic projection of the pixel opening area corresponding to the first color sub-pixel on the substrate. The orthographic projection of the second extension on the substrate is located around the orthographic projection of the pixel opening area corresponding to the second color sub-pixel on the substrate.

17. The display module according to claim 16, wherein, The plurality of sub-pixels also includes a third color sub-pixel, and the periphery of the pixel opening area corresponding to the third color sub-pixel on the substrate has the orthogonal projection of the first extension portion on the substrate and the orthogonal projection of the second extension portion on the substrate.

18. The display module according to claim 2, wherein, The at least two light-shielding layers include two layers of the second light-shielding layer; The second light-shielding layer near the display panel includes a plurality of independent edge light-shielding patterns. The orthographic projections of the plurality of edge light-shielding patterns on the substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the substrate. The second light-shielding layer, away from the display panel, includes a plurality of independent corner light-shielding patterns. Each corner light-shielding pattern includes a central portion and at least two extended portions. The at least two extended portions are respectively coupled to the central portion. The orthographic projection of the central portion on the substrate at least partially overlaps with the orthographic projection of the corner portion of the grid on the substrate. The orthographic projection of the extension portion on the substrate at least partially overlaps with the orthographic projection of the edge portion of the mesh on the substrate.

19. The display module according to claim 18, wherein, The orthographic projection of the edge light-blocking pattern on the substrate and the orthographic projection of the corner light-blocking pattern on the substrate at least partially overlap; Alternatively, the orthographic projection of the edge light-blocking pattern on the substrate does not overlap with the orthographic projection of the corner light-blocking pattern on the substrate.

20. A display device comprising a display module as claimed in any one of claims 1 to 19.

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