Display module and display device

Abstract

The utility model provides a display module and a display device, relates to the technical field of display, and is used for improving color cast of the display module. The display panel comprises a display panel, and the display panel comprises a substrate and a plurality of sub-pixels arranged on the substrate; the display module further comprises a shading structure, the shading structure is located on the light emitting side of the display panel, and the shading structure comprises at least two shading layers which are sequentially arranged in a stacked mode in the direction perpendicular to the substrate. The at least one shading layer comprises a plurality of shading patterns, the orthographic projections of the shading patterns on the substrate are located on the periphery of the orthographic projection of the pixel opening areas corresponding to at least part of the sub-pixels on the substrate, and the shading patterns are located on the periphery of the orthographic projection of the same pixel opening area on the substrate. Orthographic projections of different shading patterns on the substrate are arranged at intervals.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] With the continuous development of display technology, the application fields of display devices are becoming increasingly extensive, and people's demand for display quality of display products is becoming increasingly higher. Organic light-emitting diode (OLED) displays typically use a microcavity structure that adjusts the red, green, and blue sub-pixels separately to achieve consistent pixel adjustment with changing viewing angle, thereby improving the device's white viewing angle color shift. However, due to the inherent photoluminescence spectrum (PL spectrum) of the luminescent material, this method has limited ability to improve viewing angle color shift and will affect the displayed color gamut to a certain extent. Moreover, other methods of adjusting color shift, such as adjusting the thickness of the display device's inner film layer and the transmittance of the cathode, can also affect the device's luminescence performance. Utility Model Content

[0003] The purpose of the present invention is to provide a display module and a display device for improving the color deviation of the display module.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A first aspect of the present invention provides a display module, comprising a display panel, wherein the display panel comprises a base substrate and a plurality of sub-pixels arranged on the base substrate;

[0006] The display module further includes a light shielding structure, the light shielding structure being located on a light-emitting side of the display panel, the light shielding structure including at least two light shielding layers stacked sequentially in a direction perpendicular to the base substrate; the orthographic projections of the light shielding layers on the base substrate being located around orthographic projections of pixel openings corresponding to at least some of the sub-pixels on the base substrate;

[0007] At least one layer of the shading layer includes multiple shading patterns, and the orthographic projections of the multiple shading patterns on the base substrate are located around the orthographic projections of the pixel opening areas corresponding to at least some sub-pixels on the base substrate. Around the orthographic projections of the same pixel opening area on the base substrate, the orthographic projections of different shading patterns on the base substrate are arranged at intervals.

[0008] Optionally, the display module further includes a touch layer, the touch layer is located on the light-emitting side of the display panel, and the touch layer forms a plurality of grids;

[0009] 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 base substrate surrounds the orthographic projection of the corresponding pixel opening area on the base substrate.

[0010] Optionally, the at least two light-shielding layers include a second light-shielding layer, and the second light-shielding layer is located between the first light-shielding layer and the display panel, or the second light-shielding layer is located on a side of the first light-shielding layer facing away from the display panel.

[0011] Optionally, the at least two light-shielding layers include two second light-shielding layers, and the first light-shielding layer is located between the two second light-shielding layers.

[0012] Optionally, there is a flat layer between adjacent light-shielding layers.

[0013] Optionally, at least one layer of the second shading layer includes a plurality of independent edge shading patterns, and the orthographic projections of the plurality of edge shading patterns on the base substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least part of the sub-pixels on the base substrate.

[0014] Optionally, at least part of the orthographic projection of the edge shading pattern on the base substrate is located between the orthographic projections of two adjacent pixel opening areas on the base substrate, and the two adjacent pixel opening areas are arranged relative to each other along a first direction, and the edge shading pattern extends along a second direction, and the second direction intersects with the first direction.

[0015] Optionally, the orthographic projection of the edge shading pattern on the base substrate at least partially overlaps with the orthographic projection of the edge of the grid on the base substrate.

[0016] Optionally, the width of the end portion of the edge light-shielding pattern gradually decreases along a direction away from the central portion of the edge light-shielding pattern.

[0017] Optionally, the orthographic projection of the edge shading pattern on the base substrate includes at least one of a mallet shape, a rectangle, an ellipse and a diamond shape.

[0018] Optionally, at least one layer of the second shading layer includes a plurality of independent corner shading patterns, the corner shading patterns include 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 base substrate at least partially overlaps with the orthographic projection of the corner portion of the grid on the base substrate; the orthographic projection of the extended portion on the base substrate at least partially overlaps with the orthographic projection of the edge portion of the grid on the base substrate.

[0019] Optionally, the angle a between two adjacent extension portions in the same corner light-shielding pattern satisfies 90°≤a<180°.

[0020] Optionally, the width of the extension portion gradually decreases along the direction away from the center portion.

[0021] Optionally, the extension length of each extension portion in the same corner light-shielding pattern is the same.

[0022] Optionally, the extension length of at least two extension portions in the same corner light-shielding pattern is different.

[0023] Optionally, the plurality of sub-pixels comprises first color sub-pixels and second color sub-pixels, the area of the pixel opening region corresponding to the first color sub-pixel is greater than the area of the pixel opening region corresponding to the second color sub-pixel.

[0024] The corner light-shielding pattern comprises a first extension portion and a second extension portion, the length of the first extension portion is greater than the length of the second extension portion, the orthographic projection of the first extension portion on the substrate substrate is located on the periphery of the orthographic projection of the pixel opening region corresponding to the first color sub-pixel on the substrate substrate, and the orthographic projection of the second extension portion on the substrate substrate is located on the periphery of the orthographic projection of the pixel opening region corresponding to the second color sub-pixel on the substrate substrate.

[0025] Optionally, the plurality of sub-pixels further comprises third color sub-pixels, the periphery of the orthographic projection of the pixel opening region corresponding to the third color sub-pixel on the substrate substrate has the orthographic projection of the first extension portion on the substrate substrate and the orthographic projection of the second extension portion on the substrate substrate.

[0026] Optionally, the at least two light-shielding layers comprise two second light-shielding layers.

[0027] The second light-shielding layer close to the display panel comprises a plurality of edge light-shielding patterns independent of each other, the orthographic projection of the plurality of edge light-shielding patterns on the substrate substrate is distributed on the periphery of the orthographic projection of the pixel opening region corresponding to the at least part of the sub-pixels on the substrate substrate.

[0028] The second light-shielding layer away from the display panel comprises a plurality of corner light-shielding patterns independent of each other, the corner light-shielding pattern comprises a center portion and at least two extension portions, the at least two extension portions are respectively coupled with the center portion, the orthographic projection of the center portion on the substrate substrate at least partially overlaps with the orthographic projection of the corner portion of the grid on the substrate substrate; the orthographic projection of the extension portion on the substrate substrate at least partially overlaps with the orthographic projection of the edge portion of the grid on the substrate substrate.

[0029] Optionally, the orthographic projection of the edge shading pattern on the base substrate at least partially overlaps with the orthographic projection of the corner shading pattern on the base substrate; or, the orthographic projection of the edge shading pattern on the base substrate does not overlap with the orthographic projection of the corner shading pattern on the base substrate.

[0030] Based on the technical solution of the above-mentioned display module, a second aspect of the present invention provides a display device including the above-mentioned display module.

[0031] In the technical solution provided by the present invention, the layout position, layout height, and specific shape of the shading pattern of each shading layer can be obtained through theoretical calculation and optical simulation, so that when the display module is viewed at a specific viewing angle, the shading layers cooperate with each other to partially block the light output of at least some sub-pixels, so as to adjust the degree of color deviation of the display module at the specific viewing angle.

[0032] Furthermore, in the technical solution provided by the present invention, the layout position, layout height, and specific shape of each shading layer can be obtained through theoretical calculation and optical simulation, and the degree of shading of the pixel opening area corresponding to various color sub-pixels by the shading structure at different θ angles such as longitude 45°, 135°, 225° and 315° can be adjusted, thereby achieving the goal of adjusting different large viewing angle color deviations such as longitude 45°, 135°, 225° and 315°.

[0033] Therefore, in the technical solution provided by the present invention, 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 at various viewing angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0035] Figure 1 A schematic diagram of a first layout of a pixel opening area and a touch layer in a display module provided by an embodiment of the present utility model;

[0036] Figure 2 A second schematic diagram of the layout of the pixel opening area and the touch layer in the display module provided by an embodiment of the present utility model;

[0037] Figure 3 A schematic diagram of the color shift trajectory of a display module provided by an embodiment of the present invention in the 90-degree longitude direction;

[0038] Figure 4A schematic diagram of the color shift trajectory of the display module provided by an embodiment of the present invention in the direction of 45 degrees longitude;

[0039] Figure 5 Schematic diagram of the color deviation trajectory of the display module in the 90-degree longitude direction under each solution corresponding to Table 1;

[0040] Figure 6 Schematic diagram of the color deviation trajectory of the display module in the longitude direction of 45 degrees under each solution corresponding to Table 1;

[0041] Figure 7 A first cross-sectional schematic diagram of a display module provided by an embodiment of the present utility model;

[0042] Figure 8 A second cross-sectional schematic diagram of a display module provided by an embodiment of the present utility model;

[0043] Figure 9 A schematic diagram of a first layout of a pixel opening area and a second light shielding layer in a display module provided by an embodiment of the present utility model;

[0044] Figure 10 A schematic diagram of a first layout of a pixel opening area, a touch layer, and a second light shielding layer in a display module provided by an embodiment of the present utility model;

[0045] Figure 11 for Figure 10 Schematic diagram of the color deviation trajectory of the display module at 90 degrees longitude under this solution;

[0046] Figure 12 for Figure 10 A schematic diagram showing the color deviation trajectory of the module at 45 degrees longitude under this solution;

[0047] Figure 13 A third cross-sectional schematic diagram of a display module provided by an embodiment of the present utility model;

[0048] Figure 14 A fourth cross-sectional schematic diagram of a display module provided by an embodiment of the present utility model;

[0049] Figures 15 to 17 A schematic diagram of an edge shading pattern provided in an embodiment of the present utility model;

[0050] Figures 18 to 23 A schematic diagram of a corner shading pattern provided by an embodiment of the present utility model;

[0051] Figure 24 A second schematic diagram of the layout of the pixel opening area and the second light shielding layer in the display module provided by an embodiment of the present utility model;

[0052] Figure 25The second layout schematic diagram of the pixel opening area, the touch layer and the second light shielding layer in the display module is provided for the embodiment of the utility model.

[0053] Figure 26 The third layout schematic diagram of the pixel opening area and the touch layer in the display module is provided for the embodiment of the utility model.

[0054] Figure 27 The schematic diagram of adding the corner light shielding pattern on the basis of Figure 26 .

[0055] Figure 28 The fourth layout schematic diagram of the pixel opening area and the touch layer in the display module is provided for the embodiment of the utility model.

[0056] Figure 29 The schematic diagram of adding the corner light shielding pattern on the basis of Figure 28 . Specific implementation

[0057] In order to further illustrate the display module and the display device provided by the embodiment of the utility model, the following will be described in detail in combination with the drawings of the specification.

[0058] Based on the problems existing in the background art, it is found through research that, in the display module with the FMLOC (Flexible Multi-Layer On Cell, flexible multi-layer On Cell touch structure) structure, the large viewing angle color deviation can be improved by setting the touch layer trace offset.

[0059] As Figure 1 shown, the orthographic projection of the touch layer 30 on the substrate substrate is usually 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) on the substrate substrate, and the distance from the orthographic projection of each sub-pixel opening area in the adjacent sub-pixel opening area on the substrate substrate is equal, such as 7.5 μm. In this case, the touch layer trace is not offset, and the actual H direction (lateral) color deviation track is as shown in the REF line in Figure 3 . It should be noted that the numbers corresponding to the dashed line ring represent the corresponding specifications under different viewing angles. If the touch layer 30 offset design as shown in Figure 2 is adopted, that is, the orthographic projection of the touch layer 30 on the substrate substrate is closer to the orthographic projection of the pixel opening area GK corresponding to the green sub-pixel on the substrate substrate, such as 6 μm, and is farther from the orthographic projection of the pixel opening area BK corresponding to the blue sub-pixel on the substrate substrate, such as 9 μm, and the H direction color deviation track becomes the Split1 line in Figure 3 . Compared with Figure 3The two color shift traces in FIG1 show 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.

[0060] However, the above-mentioned offset design of the touch layer 30 can only effectively improve the color shift in the H direction (i.e., 90° and 270° longitude) and the V direction (i.e., 0° and 180° longitude). However, when viewing at a wide viewing angle in an oblique direction (i.e., 45°, 135°, 225°, and 315° longitude), the color shift in the vertical direction is not significantly improved. Figure 4 As shown, corresponding to Figure 1 and Figure 2 The two oblique color shift tracks of the structure show that even with the offset design of the touch layer 30, the color shift track is not improved. It is worth noting that the longitude 0° direction described in this utility model is defined as Figure 1 The upward direction is the V+ direction of the display module, and the longitude 90° direction is Figure 1 The right direction shown is the H+ direction of the display module, and 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, with θ = 0° being perpendicular to the screen.

[0061] By simulating various situations such as the touch layer 30 being offset at different distances and the organic encapsulation layer (IJP) being of different thicknesses, various solutions are obtained as shown in Table 1, and the color deviation trajectories of the viewing angle in the longitude 90° direction of various solutions are obtained as follows: Figure 5 As shown in the figure, the angular deviation trajectory of the 45° longitude direction of various schemes is obtained as follows Figure 6 As shown in the figure, it can be seen that although some solutions have different degrees of improvement in the large visual angle deviation in the 90° longitude direction, there is no improvement in the 75° visual angle deviation trajectory of all these solutions in the 45° longitude direction.

[0062]

[0063] Table 1

[0064] The above simulations show that conventional solutions such as offsetting the touch layer 30 or increasing or decreasing the thickness of the organic encapsulation layer cannot effectively solve the problem of large color offset at a 45° viewing angle.

[0065] In summary, using a touch layer 30 offset design can achieve the desired effect of improving large viewing angle color skew by moving the touch layer routing closer to or further away from the pixel openings corresponding to the RGB pixels. However, due to the shape constraints of the pixel openings and touch layer routing, the touch layer routing blocks different pixel openings inconsistently in different longitudes at the same latitude. This results in improved large viewing angle color skew in the H and V directions, but significant large viewing angle color skew in the 45° direction remains.

[0066] The following is an analysis of the specific reasons for the above problems:

[0067] like Figure 7 As shown in Figure 1, a beam of light with an angle of θ0 is incident from the air into the display module. The projected displacement D of the touch layer trace above the light-emitting layer can be calculated as:

[0068] D=∑H i ×tanθ i

[0069] where θ i is the propagation angle of light in each film layer below the touch layer 30, which can be calculated in sequence by the law of refraction. i is the thickness of each film layer.

[0070] The incident light at an angle of θ0 in the air can project the touch layer 30 somewhere on the interface of the light-emitting layer. According to the principle of reversible light path, it can be approximately regarded as follows: the light-emitting area blocked by the projection does not contribute to the outgoing light at an angle of θ0 (the influence of the slope reflection of the pixel definition layer and the reflection at the interface of each film layer are temporarily ignored here).

[0071] More specifically, the projected displacement of the touch layer traces at the luminescent layer interface for incident light of different wavelengths and angles can be calculated based on the thickness and refractive index of each film layer, as shown in Table 2. The distances between the edges of the RGB subpixels and the edges of the touch layer traces in the Split 2 touch layer 30 bias scheme are shown in Table 3. Combining Tables 2 and 3, we can derive the angle θ within which the pixel opening is obscured by the projection of the touch layer 30.

[0072]

[0073] Table 2

[0074]

[0075] Table 3

[0076] The angle range corresponding to the solid-line frame in Table 2 is the angle range in which the corresponding pixel opening area is blocked in the longitude 90° direction.

[0077] The pixel opening area RK corresponding to the red sub-pixel begins to be blocked at around 65°. As the angle increases, the projection displacement of the touch layer trace increases, and the blocked area gradually increases from 65° to 89°. The pixel opening area GK corresponding to the green sub-pixel begins to be blocked at around 55° and gradually increases from 55° to 89°. The pixel opening area BK corresponding to the blue sub-pixel is not blocked. This results in a decrease in the ratio of green and red light at large viewing angles, a downward shift in the color shift trajectory, and a decrease in JNCD.

[0078] The angle range corresponding to the dotted box in Table 2 is the angle range in which the corresponding pixel opening area is blocked in the longitude 45° direction.

[0079] The pixel opening area RK corresponding to the red sub-pixel starts to be blocked at around 45° and the blocked area does not increase at around 65° (the touch layer trace width is 3μm). The pixel opening area GK corresponding to the green sub-pixel starts to be blocked at around 40° and the blocked area does not increase at around 60°. The pixel opening area BK corresponding to the blue sub-pixel starts to be blocked at around 60° and the blocked area gradually increases at 89°.

[0080] The main difference between the 90° and 45° longitude directions is that at 45°, after an angle of θ of 60°, the pixel opening area BK corresponding to the blue sub-pixel begins to be blocked, and the blocked area gradually increases as the angle θ increases. However, the blocked areas of the pixel opening areas RK corresponding to the red sub-pixel and the pixel opening areas GK corresponding to the green sub-pixel remain unchanged after (or near) 60°. As a result, the proportion of blue light gradually decreases, while the proportions of red and green light do not decrease further, and the corresponding large viewing angle color shifts toward yellow-green.

[0081] The above analysis ignores the reflection of the slope of the pixel definition layer and the reflection of the interface of each film layer. If these factors are taken into account, the impact will be more complicated, but the overall trend is basically consistent with the above analysis. Through modeling and simulation, the color deviation trajectories in the longitude 90° direction and 45° direction are as follows: Figure 5 and Figure 6 As shown in Split 2, the color shift at 90° longitude is greatly improved, but at 45° longitude, the color shift at θ≤60° is improved, while at 75° the color shift increases. This conclusion is consistent with the above analysis. The above analysis method can also be used to explain Figure 5 and Figure 6 The color shift trajectory changes of different touch layer 30 biasing schemes from Split 1 to Split 9 are not described in detail here.

[0082] See also Figures 8 to 10 、 Figure 13 and Figure 14 , an embodiment of the present utility model provides a display module, comprising a display panel, wherein the display panel comprises a base substrate and a plurality of sub-pixels arranged on the base substrate;

[0083] The display module further includes a light-shielding structure, which is 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 in sequence along a direction perpendicular to the base substrate. The orthographic projection of the light-shielding layer on the base substrate is located around the orthographic projection of pixel opening areas corresponding to at least some sub-pixels (such as a pixel opening area RK corresponding to a red sub-pixel, a pixel opening area GK corresponding to a green sub-pixel, and a pixel opening area BK corresponding to a blue sub-pixel) on the base substrate.

[0084] At least one layer of the shading layer includes multiple shading patterns (such as: edge shading pattern 202a, corner shading pattern 202b), and the orthographic projections of the multiple shading patterns on the base substrate are located around the orthographic projections of the pixel opening areas corresponding to at least some sub-pixels on the base substrate. Around the orthographic projections of the same pixel opening area on the base substrate, the orthographic projections of different shading patterns on the base substrate are arranged at intervals.

[0085] More specifically, around the orthographic projection of the same pixel opening area, the orthographic projections of the edge light-shielding patterns 202a on the base substrate are spaced apart, meaning that the edge light-shielding patterns 202a do not form a closed surrounding structure. Around the orthographic projection of the same pixel opening area, the orthographic projections of the corner light-shielding patterns 202b on the base substrate are spaced apart, meaning that the corner light-shielding patterns 202b do not form a closed surrounding structure.

[0086] It should be noted that Figure 8 The figure shows a driving backplane BP, a pixel defining layer PDL, a green light-emitting functional layer ELG, a blue light-emitting functional layer, a first inorganic encapsulation layer CVD1, an organic encapsulation layer IJP and a second inorganic encapsulation layer CVD2. These structures all belong to the display panel.

[0087] Exemplarily, the display panel comprises an organic light-emitting diode display panel, comprising a plurality of sub-pixels, each of which includes a sub-pixel driving circuit and a light-emitting element, wherein the light-emitting element includes an anode coupled to the sub-pixel driving circuit; the display panel further comprises a pixel defining layer, wherein the pixel defining layer defines a pixel opening region corresponding to each sub-pixel, and the light-emitting element includes a light-emitting functional layer located within the corresponding pixel opening region. The display panel further comprises a cathode layer and an encapsulation layer, wherein the cathode layer is located between the light-emitting functional layer and the encapsulation layer; the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, which are stacked in sequence in a direction away from the base substrate.

[0088] Exemplarily, the orthographic projection of the light shielding layer on the base substrate is located around the orthographic projection of the pixel opening area corresponding to each sub-pixel on the base substrate.

[0089] For example, to achieve a reduced JNCD value for color shifts above θ>60°, the proportion of red, green, and blue light must decrease monotonically as the angle θ increases, similarly to the blue light. This means the blocked area must increase monotonically. By coordinating at least two shielding layers within the shielding structure, the shielding area of ​​the pixel openings RK and GK corresponding to the red and green sub-pixels can increase monotonically above θ>60°.

[0090] For example, by adjusting the height position of each shading layer, the shape and size of the shading pattern in the shading layer, and the horizontal arrangement position of the shading pattern, the degree of blocking of the pixel opening area corresponding to each color sub-pixel by each shading layer under a large viewing angle in a specific longitude direction can be adjusted, thereby achieving the goal of improving the color deviation of the large viewing angle in a specific longitude direction.

[0091] 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 example, the thickness of the organic encapsulation layer can be reduced so that the light-shielding layer closest to the display panel is closer to the pixel opening area, thereby adjusting its shielding of the pixel opening area. For example, the thickness of the organic encapsulation layer can be reduced from 12μm to 9μm.

[0092] For example, when a display module includes the light shielding structure, a flat 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 flat layer OC has a thickness of 3 μm, which can fill and supplement the optical path reduced by the thinning of the organic encapsulation layer.

[0093] According to the specific structure of the display module described above, in the display module provided by the embodiment of the present invention, a light-shielding structure including at least two light-shielding layers is provided on the light-emitting side of the display panel, and 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 to include multiple light-shielding patterns (such as: edge light-shielding patterns 202a and corner light-shielding patterns 202b), and the orthographic projections of the multiple light-shielding patterns on the substrate are located around the orthographic projection of the pixel opening area corresponding to at least some sub-pixels on the substrate, and 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 by the embodiment of the present invention, the layout position, layout height, and specific shape of the light-shielding pattern of each light-shielding layer can be obtained through theoretical calculation and optical simulation, so that when the display module is viewed at a specific viewing angle, the light-shielding layers cooperate with each other to partially block the light output of at least some sub-pixels, so as to adjust the degree of color deviation of the display module at the specific viewing angle.

[0094] Furthermore, in the display module provided by the embodiment of the present invention, the layout position, layout height, and specific shape of each shading layer can be obtained through theoretical calculation and optical simulation, and the degree of shading of the pixel opening area corresponding to each color sub-pixel by the shading structure at different θ angles such as 45°, 135°, 225° and 315° in the longitude direction can be adjusted, thereby achieving the goal of adjusting different large viewing angle color deviations such as 45°, 135°, 225° and 315° in the longitude direction.

[0095] Therefore, the display module provided by the embodiment of the present application can adjust color cast under various viewing angles by setting the light shielding structure including at least two light shielding layers on the light emitting side of the display panel.

[0096] Please refer to Figures 8 to 10 、 Figure 13 and Figure 14 , Figures 24 to 29 In some embodiments, the display module further comprises a touch layer 30, the touch layer 30 is located on the light emitting side of the display panel, and the touch layer 30 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 multiplexed as the first light shielding layer 201, and the orthographic projection of the grid on the substrate substrate surrounds the orthographic projection of the corresponding pixel opening area on the substrate substrate.

[0097] For example, the touch layer 30 is made of light shielding metal material, but is not limited thereto.

[0098] For example, the second light shielding layer 202 includes a black matrix layer, but is not limited thereto.

[0099] The above setting mode multiplexes the touch layer 30 as the first light shielding layer 201, which is beneficial to simplify the overall structure of the display module and simplify the manufacturing process flow of the display module.

[0100] As Figures 8 to 10 shown, in some embodiments, the at least two light shielding layers include a second light shielding layer 202, and the second light shielding layer 202 is located between the first light shielding layer 201 and the display panel. For example, the manufacturing process flow of the display module is as follows: a plurality of sub-pixels are manufactured on a substrate substrate, which includes manufacturing a sub-pixel driving circuit with a transistor, and depositing to form light emitting elements of different colors; then, a first inorganic packaging layer, an organic packaging layer and a second inorganic packaging layer are sequentially manufactured, the first inorganic packaging layer includes but is not limited to three inorganic sub-film layers; the second light shielding layer 202 is manufactured on the side of the packaging layer away from the substrate substrate; the first layer of flat layer OC is manufactured on the side of the second light shielding layer 202 away from the substrate substrate; the buffer layer BUF, the touch layer 30 and the second layer of flat layer OC are sequentially manufactured on the side of the first layer of flat layer OC away from the substrate substrate.

[0101] 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 projection displacement of the second light shielding layer 202 and the touch layer 30 at different θ angles is calculated. As can be seen from Table 4, under light with θ≥60°, the projection displacement of the touch layer 30 minus the projection displacement of the second light shielding layer 202 is less than 3 μm (the width of the touch layer 30), that is, the projections of the second light shielding layer 202 and the touch layer 30 always overlap. The projection outside displacement of the second light shielding layer 202 under light with θ=89° is 5.86 μm, which does not 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 (7 μm and 6 μm of displacement are required, respectively), that is, the shielding area of the pixel opening area RK corresponding to the red sub-pixel and the pixel opening area GK corresponding to the green sub-pixel in the interval 60°<θ<89° is monotonically increasing, and the red light and green light are monotonically decreasing. Through modeling simulation, the color shift trajectory results are as shown in the implementation case 1 of Figure 11 and Figure 12 In this embodiment, the 75° viewing angle color shift in the longitude directions 45°, 135°, 225° and 315° is greatly improved.

[0102]

[0103] Table 4

[0104] It should be noted that it is conceivable that increasing the width of the touch layer 30 can also improve the problem of insufficient shielding of the pixel opening area RK corresponding to the red sub-pixel and the pixel opening area GK corresponding to the green sub-pixel in the longitude directions 45°, 135°, 225° and 315° to some extent, but widening the touch layer 30 will simultaneously affect the color shift in the latitude directions 0°, 90°, 180° and 270°, and the transmittance of the screen will decrease. In the display module provided in the above embodiments, the color shift in the longitude directions 45°, 135°, 225° and 315° can be improved, and the color shift in the latitude directions 0°, 90°, 180° and 270° and the transmittance of the screen will not be affected.

[0105] As shown in Figure 13 In some embodiments, the at least two light shielding layers include a second light shielding layer 202 located on the side of the first light shielding layer 201 away from the display panel. For example, the manufacturing process flow of the display module is as follows: after the encapsulation layer is manufactured, the touch layer 30 is manufactured on the side of the encapsulation layer away from the substrate substrate; the first flat layer OC is manufactured on the side of the touch layer 30 away from the substrate substrate; and the buffer layer BUF, the second light shielding layer 202 and the second flat layer OC are sequentially manufactured on the side of the first flat layer OC away from the substrate substrate.

[0106] It is worth noting that exchanging the positions of the touch layer 30 and the second light shielding layer 202 can also achieve the beneficial effects achieved in the above embodiment, which will not be described in detail here.

[0107] like Figure 13 As shown, in some embodiments, the at least two light-shielding layers include two second light-shielding layers 202, and the first light-shielding layer 201 is 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 manufactured, a first second light-shielding layer 202 is manufactured on the side of the encapsulation layer facing away from the base substrate; a first flat layer OC is manufactured on the side of the first second light-shielding layer 202 facing away from the base substrate; a first buffer layer BUF is manufactured on the side of the first flat layer OC facing away from the base substrate; a touch layer 30 is manufactured on the side of the first buffer layer BUF facing away from the base substrate; a second flat layer OC is manufactured on the side of the touch layer 30 facing away from the base substrate; a second buffer layer BUF is manufactured on the side of the second flat layer OC facing away from the base substrate; a second second light-shielding layer 202 is manufactured on the side of the second buffer layer BUF facing away from the base substrate; and a third flat layer OC is manufactured on the side of the second second light-shielding layer 202 facing away from the base substrate.

[0108] It is worth noting that if the pixel-defining layer gap between adjacent pixel openings is large, and the projection displacement created by only one second light-shielding layer 202 and touch layer 30 is insufficient, at least two layers of second light-shielding layer 202 may be provided. Furthermore, for display modules that do not include a touch layer 30, a dual- or multi-layer second light-shielding layer 202 design can be employed to adjust the height of the different second light-shielding layers 202, the shape and size of the light-shielding patterns within the second light-shielding layers 202, and the horizontal arrangement of the light-shielding patterns within the second light-shielding layers 202 to improve color skewness in specific longitudinal directions.

[0109] The greater the distance between the light-shielding layer and the base substrate, the greater the projected displacement of the light-shielding layer, the smaller the starting angle for blocking the pixel opening area, and, given a constant width of the light-shielding pattern in the light-shielding layer, the smaller the cutoff angle at which the blocked area does not increase. To address specific color shift situations, the degree to which the first and second light-shielding layers 201 and 202 block the pixel opening areas corresponding to each color sub-pixel at different angles θ can be adjusted as needed. The height of the light-shielding layers can be adjusted, including but not limited to positioning the second light-shielding layer 202 on the side of the first light-shielding layer 201 away from the base substrate. Furthermore, the second light-shielding layer 202 can comprise two or more layers. When the second light-shielding layer 202 comprises two or more layers, the touch layer 30 is not a required film layer.

[0110] The display module provided by the above embodiments can improve the large-viewing-angle color deviation of the target direction (e.g., the longitude directions of 45°, 135°, 225° and 315°) without affecting the screen transmittance, and can also improve the large-viewing-angle color deviation of different longitude directions without the touch layer 30.

[0111] It is worth noting that, since the touch layer 30 and each second light shielding layer 202 form a stacked structure, the above design does not change the original screen transmittance, and the passive optical characteristics of the product are basically unchanged. Meanwhile, the above design scheme can be realized by using existing processes and equipment.

[0112] As shown in FIGS. 1 to 3, Figure 2 , Figure 9 , Figure 10 , Figures 15 to 17 In some embodiments, at least one of the second light shielding layers 202 includes a plurality of edge light shielding patterns 202a which are independent of each other, and the orthographic projection of the plurality of edge light shielding patterns 202a on the substrate substrate is distributed around the orthographic projection of the pixel opening region corresponding to the at least part of the sub-pixel on the substrate substrate.

[0113] For example, the orthographic projection of at least part of the edge light shielding pattern 202a on the substrate substrate is located between the orthographic projections of two adjacent pixel opening regions on the substrate substrate, the two adjacent pixel opening regions are arranged relative to each other along a first direction, and the edge light shielding pattern 202a extends along a second direction which intersects the first direction.

[0114] For example, the orthographic projection of the edge light shielding pattern 202a on the substrate substrate at least partially overlaps the orthographic projection of the edge of the grid 301 on the substrate substrate.

[0115] For example, the orthographic projection of the edge light shielding pattern 202a on the substrate substrate is located inside the orthographic projection of the edge of the grid 301 on the substrate substrate.

[0116] For example, the extension direction of the edge light shielding pattern 202a is the same as the extension direction of the edge of the grid 301 which overlaps the edge light shielding pattern 202a, but is not limited thereto.

[0117] For example, the shape of the orthographic projection of the edge light shielding pattern 202a on the substrate substrate is substantially the same as the shape of the orthographic projection of the edge of the grid 301 which overlaps the edge light shielding pattern 202a on the substrate substrate.

[0118] For example, the width of the end portions of the edge light-shielding pattern 202a gradually decreases as it moves away from the center portion of the edge light-shielding pattern 202a. Narrowing the end portions of the edge light-shielding pattern 202a in this manner can reduce the amount of obstruction in the longitudinal direction of the location. This arrangement is beneficial for reducing obstruction in the longitudes of 0°, 90°, 180°, and 270°.

[0119] For example, the orthographic projection of the edge shading pattern 202a on the substrate includes at least one of a mallet shape, a rectangle, an ellipse and a diamond shape. Figure 9 As shown, the rectangular edge shading pattern 202a becomes a mallet-shaped edge shading pattern 202a after the width of the end portion is narrowed. The mallet-shaped edge shading pattern 202a is distributed along the four sides of the pixel in directions of longitude 45°, 135°, 225° and 315°.

[0120] It's worth noting that the design principle for the edge light-shielding pattern 202a is to maximize its effectiveness in longitudinal directions requiring color shift adjustment, while minimizing its effectiveness in longitudinal directions not requiring adjustment. For example, since color shift in the longitudes of 0°, 90°, 180°, and 270° has already been adjusted to a relatively good state by the biasing of the touch layer 30, the design of the second light-shielding layer 202 should consider minimizing obstruction in the longitudes of 0°, 90°, 180°, and 270°. In actual applications, the shape, length, width, or narrowing of the edge light-shielding pattern 202a can be adjusted based on the specific degree of obstruction required for the pixel opening areas corresponding to the various color sub-pixels. Optical simulations can be used to determine the appropriate shape.

[0121] The above embodiment can reduce the large viewing angle color deviation differences in various longitudinal directions by adjusting the shape and length of the edge shading pattern 202a. The degree of shielding can be adjusted by adjusting the length of the edge shading pattern 202a in its extension direction (e.g., direction B). The shorter the length, the less impact it has on the longitudes of 0°, 90°, 180°, and 270°. If product transmittance is required, the width of the edge shading pattern 202a along direction A should be close to 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 a significant amount to avoid reducing screen transmittance.

[0122] like Figures 18 to 29As shown, in some embodiments, at least one of the second light shielding layer 202 comprises a plurality of corner light shielding patterns 202b which are independent of each other, each of the corner light shielding patterns 202b comprises a central part Z1 and at least two extension parts Y1, the central part Z1 is coupled with the at least two extension parts Y1 respectively, the central part Z1 is at least partially overlapped with the corner part 302 of the grid on the substrate substrate, and the extension part Y1 is at least partially overlapped with the side part 301 of the grid on the substrate substrate.

[0123] As an example, the central part Z1 and the at least two extension parts Y1 of the corner light shielding pattern 202b are formed as an integral structure.

[0124] As an example, the central part Z1 is located inside the corner part 302 of the grid on the substrate substrate, and the extension part Y1 is located inside the side part 301 of the grid on the substrate substrate.

[0125] As an example, the shape of the corner light shielding pattern 202b on the substrate substrate is substantially the same as the shape of the grid part overlapped with it on the substrate substrate.

[0126] As an example, in the same corner light shielding pattern 202b, the angle a between two adjacent extension parts Y1 satisfies: 90°≤a<180°; for example, a can take values such as 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, etc., but not limited thereto. It is worth noting that in some cases, 45°≤a<180° can also be set.

[0127] As an example, as shown in FIG. 2B, the corner light shielding pattern 202b comprises four extension parts Y1, and the adjacent extension parts Y1 form a cross-shaped corner light shielding pattern 202b. Figures 18 to 21 As an example, as shown in FIG. 2B, the corner light shielding pattern 202b comprises four extension parts Y1, and the adjacent extension parts Y1 form a cross-shaped corner light shielding pattern 202b. Figure 22 As an example, as shown in FIG. 2B, the corner light shielding pattern 202b comprises four extension parts Y1, and the adjacent extension parts Y1 form a cross-shaped corner light shielding pattern 202b. Figure 23 As an example, as shown in FIG. 2B, the corner light shielding pattern 202b comprises four extension parts Y1, and the adjacent extension parts Y1 form a cross-shaped corner light shielding pattern 202b.

[0128] It is worth noting that the selection of the above-mentioned corner light shielding pattern 202b can be determined by the pixel arrangement. For example, when the SRGB pixel arrangement is adopted, the corner light shielding pattern 202b is set to be T-shaped, and when the Delta pixel arrangement is adopted, the corner light shielding pattern 202b is set to be Y-shaped.

[0129] Exemplarily, the extension portion Y1 includes a rectangle, a trapezoid, a pentagon, a partial ellipse, etc., but is not limited thereto.

[0130] Exemplarily, the width of the extension portion Y1 gradually decreases in a direction away from the central portion Z1. For example, at least a portion of the extension portion Y1 away from the central portion Z1 is narrowed in the above manner; or, all of the extension portion Y1 away from the central portion Z1 is narrowed.

[0131] Exemplarily, the extension lengths of the extension portions Y1 included in the same corner light-shielding pattern 202b are the same.

[0132] Exemplarily, among the extension portions Y1 included in the same corner light-shielding pattern 202 b , at least two extension portions Y1 have different extension lengths.

[0133] For example, Figure 24 and Figure 25 As shown, the multiple sub-pixels include a first color sub-pixel and a second color sub-pixel, and the area of ​​the pixel opening area corresponding to the first color sub-pixel is larger than the area of ​​the pixel opening area corresponding to the second color sub-pixel; the corner shading pattern 202b includes a first extension portion Y11 and a second extension portion Y12, the length of the first extension portion Y11 is larger than the length of the second extension portion Y12, the orthographic projection of the first extension portion Y11 on the base substrate is located at the periphery of the orthographic projection of the pixel opening area corresponding to the first color sub-pixel on the base substrate, and the orthographic projection of the second extension portion Y12 on the base substrate is located at the periphery of the orthographic projection of the pixel opening area corresponding to the second color sub-pixel on the base substrate.

[0134] Exemplarily, the corner shading pattern 202b includes two first extension portions Y11 and two second extension portions Y12, the two first extension portions Y11 are adjacent, and the angle between the extension directions of the two first extension portions Y11 is 90°, the two second extension portions Y12 are adjacent, and the angle between the extension directions of the two second extension portions Y12 is 90°, and the angle between adjacent first extension portions Y11 and second extension portions Y12 is 90°, but is not limited to this.

[0135] Exemplarily, the distance between the ends of the two first extension portions Y11 coupled to the central portion Z1 is greater than the distance between the ends of the two second extension portions Y12 coupled to the central portion Z1. The above-mentioned setting method can better match the size of the pixel opening area to be blocked by the extension portion Y1, thereby better improving the color deviation problem.

[0136] Exemplarily, the edge of the center portion Z1 between the two first extension portions Y11 and the edge of the center portion Z1 between the two second extension portions Y12 can be designed as a straight line or an arc closer to the pixel opening area, but is not limited thereto.

[0137] Illustratively, the end portion of the first extension portion Y11 and the end portion of the second extension portion Y12 may be narrowed or not narrowed according to actual needs.

[0138] The above setting method can achieve a larger area of ​​occlusion for the large-size pixel opening area corresponding to the first color sub-pixel, and a smaller area of ​​occlusion for the small-size pixel opening area corresponding to the first color sub-pixel. In this way, adaptive occlusion of pixel opening areas of different sizes in the directions of 0°, 90°, 180°, and 270° can be achieved, thereby further improving the color deviation effect.

[0139] For example, Figure 24 and Figure 25 As shown, the multiple sub-pixels also include a third color sub-pixel, and the pixel opening area corresponding to the third color sub-pixel has an orthographic projection of the first extension portion Y11 on the base substrate and an orthographic projection of the second extension portion Y12 on the base substrate around the orthographic projection of the pixel opening area on the base substrate.

[0140] Exemplarily, 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.

[0141] It can be seen from the shape of the pixel opening area and the arrangement of the touch layer 30 and the light-shielding layer that along the length direction of the pixel opening area (such as: longitude 45°, 135°, 225°, and 315° directions), 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, and along the corner direction of the pixel opening area (such as: 0°, 90°, 180°, and 270° directions), 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 away from the pixel opening area.

[0142] As the angle θ increases, the edge 301 of the grid in the touch layer 30 and the edge shading pattern 202a in the second light-shielding layer 202 first block the pixel openings along the lengthwise direction, and then block the pixel openings along the corners. If the pixel-defining layer gap between adjacent pixel openings is large, this may result in shading along the lengthwise direction but not along the corners. If the offset of the touch layer 30 and the second light-shielding layer 202 in this case adjusts the large viewing angle color skew to a better value along the lengthwise direction, the large viewing angle color skew remains large because the corners are not blocked.

[0143] In the display module provided by the above embodiment, at least one layer of the second light-shielding layer 202 is provided to include the multiple independent corner light-shielding patterns 202b, so that the multiple corner light-shielding patterns 202b can be distributed in the corner direction of the pixel opening area, thereby blocking the pixel opening area along the corner direction, thereby achieving color deviation adjustment in the corner direction of the pixel opening area.

[0144] In some embodiments, the at least two light-shielding layers include two layers of the second light-shielding layers;

[0145] The second light-shielding layer close to the display panel includes a plurality of independent edge light-shielding patterns 202a, wherein the orthographic projections of the plurality of edge light-shielding patterns 202a on the base substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the base substrate;

[0146] The second light-shielding layer away from the display panel includes a plurality of independent corner light-shielding patterns 202b, and the corner light-shielding patterns 202b include a central portion Z1 and at least two extended portions Y1, and the at least two extended portions Y1 are respectively coupled to the central portion Z1, and the orthographic projection of the central portion Z1 on the base substrate at least partially overlaps with the orthographic projection of the corner portion of the grid on the base substrate; the orthographic projection of the extended portion Y1 on the base substrate at least partially overlaps with the orthographic projection of the edge portion of the grid on the base substrate.

[0147] For example, in two adjacent light-shielding layers, the light-shielding layer close to the display panel includes the edge light-shielding pattern 202a, and the light-shielding layer away from the display panel includes the corner light-shielding pattern 202b.

[0148] Illustratively, of the two adjacent second light-shielding layers 202 , the second light-shielding layer 202 close to the display panel includes an edge light-shielding pattern 202 a , and the second light-shielding layer 202 away from the display panel includes a corner light-shielding pattern 202 b .

[0149] Exemplarily, the orthographic projection of the edge shading pattern 202a on the base substrate at least partially overlaps with the orthographic projection of the corner shading pattern 202b on the base substrate; or, the orthographic projection of the edge shading pattern 202a on the base substrate does not overlap with the orthographic projection of the corner shading pattern 202b on the base substrate.

[0150] It is worth noting that the height position 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 can be set 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 larger projection displacement, thereby supplementing the shielding effect in the corner direction of the pixel opening area, thereby achieving color deviation adjustment in the corner direction of the pixel opening area.

[0151] The above-mentioned setting method can achieve similar shielding effects at various azimuth angles and similar color difference adjustment effects, thereby more effectively improving the color cast function.

[0152] An embodiment of the present invention further provides a display device, comprising the display module provided by the above embodiment.

[0153] It should be noted that the display device can be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device also includes a flexible circuit board, a printed circuit board and a backplane.

[0154] In the display module provided by the above embodiment, the layout position, layout height, and specific shape of each light-shielding layer can be determined through theoretical calculation and optical simulation. 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 at a specific viewing angle, thereby adjusting the degree of color shift of the display module at the specific viewing angle. Furthermore, in the display module provided by the above embodiment, the layout position, layout height, and specific shape of each light-shielding layer can be determined through theoretical calculation and optical simulation. This allows the light-shielding structure to adjust the degree of blocking the pixel opening area corresponding to each color sub-pixel at different angles θ, such as 45°, 135°, 225°, and 315° in longitude, thereby achieving the goal of adjusting the color shift at different viewing angles, such as 45°, 135°, 225°, and 315° in longitude. Therefore, in the display module provided by the above 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 at various viewing angles.

[0155] The display device provided by the embodiment of the present invention also has the above-mentioned beneficial effects when including the above-mentioned display module, which will not be described in detail here.

[0156] It should be noted that the structure extends along 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, a line segment or a strip-shaped body, the main part extends along a certain direction, and the length of the main part extended along a certain direction is greater than the length of the secondary part extended along other directions.

[0157] It should be noted that the "same layer" in the embodiments of the present invention may refer to film layers on the same structural layer. Or, for example, film layers on the same layer may be film layers that are formed using the same film-forming process to form specific patterns, and then patterned using the same mask through a single patterning process to form the film layers. Depending on the specific pattern, a single patterning process may include multiple exposure, development, or etching processes, and the specific patterns in the resulting layer structure may be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0158] In the various method embodiments of the present invention, the serial numbers of the steps cannot be used to limit the order of the steps. For ordinary technicians in this field, without paying any creative work, changes to the order of the steps are also within the scope of protection of the present invention.

[0159] It should be noted that the various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, the method embodiments are described briefly because they are generally similar to the product embodiments. For relevant parts, refer to the description of the product embodiments.

[0160] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect", "couple" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0161] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be directly on or under the other element, or intervening elements can also be present.

[0162] In the description above of the embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner without departing from the scope of the present disclosure.

[0163] The above describes only the specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display module, characterized in that: A display panel is provided, wherein the display panel includes a base substrate and a plurality of sub-pixels arranged on the base substrate; The display module further includes a light shielding structure, which is located on the light-emitting side of the display panel and includes at least two light shielding layers stacked in a direction perpendicular to the base substrate; The orthographic projection of the light shielding layer on the base substrate is located around the orthographic projection of the pixel opening area corresponding to at least part of the sub-pixels on the base substrate; At least one layer of the shading layer includes multiple shading patterns, and the orthographic projections of the multiple shading patterns on the base substrate are located around the orthographic projections of the pixel opening areas corresponding to at least some sub-pixels on the base substrate. Around the orthographic projections of the same pixel opening area on the base substrate, the orthographic projections of different shading patterns on the base substrate are arranged at intervals.

2. The display module according to claim 1, wherein: The display module further includes a touch layer, the touch layer is located on the light-emitting side of the display panel, and the touch layer forms a plurality of 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 base substrate surrounds the orthographic projection of the corresponding pixel opening area on the base substrate.

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

5. The display module according to claim 2, wherein: There is a flat layer between adjacent light-shielding layers.

6. The display module according to any one of claims 2 to 5, wherein: At least one layer of the second shading layer includes multiple independent edge shading patterns, and the orthographic projections of the multiple edge shading patterns on the base substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least part of the sub-pixels on the base substrate.

7. The display module according to claim 6, wherein: At least part of the orthographic projection of the edge shading pattern on the base substrate is located between the orthographic projections of two adjacent pixel opening areas on the base substrate, and the two adjacent pixel opening areas are arranged opposite to each other along a first direction. The edge shading pattern extends along a second direction, and the second direction intersects with the first direction.

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

9. The display module according to claim 6, wherein: The width of the end portion of the side light shielding pattern gradually decreases in a direction away from the central portion of the side light shielding pattern.

10. The display module according to claim 6, wherein: The orthographic projection of the edge light-shielding pattern on the base substrate includes at least one of a mallet shape, a rectangle, an ellipse and a diamond shape.

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

12. The display module according to claim 11, wherein: In the same corner light-shielding pattern, the angle a formed between two adjacent extension portions satisfies: 90°≤a<180°.

13. The display module according to claim 11, wherein: The width of the extension portion gradually decreases in a direction away from the central portion.

14. The display module according to claim 11, wherein: The extension lengths of the extension portions of the same corner light-shielding pattern are the same.

15. The display module according to claim 11, wherein: Among the extended portions included in the same corner light-shielding pattern, at least two extended portions have different extended lengths.

16. The display module according to claim 15, wherein: The plurality of sub-pixels include a first color sub-pixel and a second color sub-pixel, and 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 shading pattern includes a first extension portion and a second extension portion, the length of the first extension portion is greater than the length of the second extension portion, the orthographic projection of the first extension portion on the base substrate is located around the orthographic projection of the pixel opening area corresponding to the first color sub-pixel on the base substrate, and the orthographic projection of the second extension portion on the base substrate is located around the orthographic projection of the pixel opening area corresponding to the second color sub-pixel on the base substrate.

17. The display module according to claim 16, wherein: The multiple sub-pixels also include a third color sub-pixel, and the pixel opening area corresponding to the third color sub-pixel has an orthographic projection of the first extension portion on the base substrate and an orthographic projection of the second extension portion on the base substrate around the orthographic projection of the pixel opening area on the base 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 layers; The second light-shielding layer close to the display panel includes a plurality of independent edge light-shielding patterns, wherein the orthographic projections of the plurality of edge light-shielding patterns on the base substrate are distributed around the orthographic projections of the pixel opening areas corresponding to at least some of the sub-pixels on the base substrate; The second light-shielding layer, which is away from the display panel, includes a plurality of mutually independent corner light-shielding patterns, each of the corner light-shielding patterns including a central portion and at least two extended portions, each of the at least two extended portions being coupled to the central portion, and an orthographic projection of the central portion on the base substrate at least partially overlapping with an orthographic projection of a corner portion of the grid on the base substrate; The orthographic projection of the extension portion on the base substrate at least partially overlaps with the orthographic projection of the edge of the grid on the base substrate.

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

20. A display device, characterized in that: The display module comprises the display module according to any one of claims 1 to 19.

Images