Display module and electronic device

Abstract

The application discloses a display module and an electronic device. The display module comprises an array substrate, an electroluminescent layer, an encapsulation layer and a touch metal grid layer. A plurality of pixel light-emitting areas are defined on the array substrate, and the electroluminescent layer is arranged in any pixel light-emitting area. The encapsulation layer is arranged on one side of the array substrate, and the touch metal grid layer is arranged on one side of the encapsulation layer. The array substrate, the encapsulation layer and the touch metal grid layer are sequentially stacked along a first direction. The touch metal grid layer comprises a plurality of metal tracks which are cross-distributed and form a plurality of hollow areas. The orthographic projection of the hollow area on the array substrate covers the pixel light-emitting area. The light generated by the electroluminescent layer is sequentially emitted from the display module through the encapsulation layer and the hollow area. The ratio of the maximum light blocking angle of the touch metal grid layer in the second direction and the third direction to the maximum light blocking angle of the electroluminescent layer in the second direction and the third direction is within a preset range. The second direction and the third direction are perpendicular to each other, and both the second direction and the third direction are perpendicular to the first direction.

Description

Technical Field

[0001] This application belongs to the field of display module technology, specifically relating to a display module and an electronic device. Background Technology

[0002] As organic light-emitting diode (OLED) display technology evolves towards higher resolution, the density of metal wiring within pixels continues to increase. It is no longer possible to lay out a large area of ​​metal pads under the anode layer to achieve planarization. This can lead to color shift in the display module when viewed from a wide viewing angle, which seriously affects display quality and user experience. Summary of the Invention

[0003] This application aims to provide a display module and electronic device that solves the problem of color shift in current display modules when viewed from a wide angle, which seriously affects display quality and user experience.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application propose a display module, comprising:

[0006] An array substrate, on which multiple pixel light-emitting areas are defined;

[0007] An electroluminescent layer is provided in any pixel light-emitting area;

[0008] Encapsulation layer, which is disposed on one side of the array substrate;

[0009] A touch metal mesh layer is disposed on one side of the encapsulation layer. The array substrate, the encapsulation layer and the touch metal mesh layer are stacked sequentially along the first direction. The touch metal mesh layer includes multiple metal traces that are distributed in a cross direction. The multiple metal traces enclose multiple hollow areas. The orthogonal projection of the hollow areas on the array substrate covers the pixel light-emitting area. The light generated by the electroluminescent layer is emitted from the display module sequentially through the encapsulation layer and the hollow areas.

[0010] Among them, the ratio of the maximum light-blocking angle of the touch metal mesh layer to the electroluminescent layer in the second direction and the third direction is within a preset range, the second direction and the third direction are perpendicular to each other, and both the second direction and the third direction are perpendicular to the first direction.

[0011] Secondly, embodiments of this application provide an electronic device, which includes the display module described in the first aspect.

[0012] In the embodiments of this application, the maximum light-blocking angle quantifies the maximum critical angle at which light can be emitted in different directions without being blocked by the metal traces. The ratio of the maximum light-blocking angle of the touch metal mesh layer to that of the electroluminescent layer in different directions is within a preset range, which means that the light path blocking characteristics in different directions are matched in a coordinated manner. Due to the change in optical path difference caused by anode fluctuations, the brightness attenuation curves in different directions will have asymmetrical deviations. By controlling the ratio of the maximum light-blocking angles in different directions, a geometric blocking compensation amount that cancels out the anode defects is introduced, so that the effective light-emitting cone angle of the light in different directions tends to be consistent, thereby significantly reducing the color shift phenomenon at a large viewing angle. This solution can achieve viewing angle compensation without adding additional structures or changing the material of the light-emitting layer, and has the advantages of low cost and ease of implementation.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of a display module having a light-blocking angle α1 according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of a display module having a light-blocking angle α2 according to an embodiment of this application;

[0017] Figure 3 This is a partial schematic diagram of a display module according to an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of a pixel repeating unit according to an embodiment of this application;

[0019] Figure 5 This is a schematic diagram showing the relative positions of pixel combinations and metal traces according to an embodiment of this application.

[0020] Figure label:

[0021] 100 Display module, 110 Array substrate, 111 Pixel light-emitting area, 112 Center hole, 120 Electroluminescent layer, 121 Red pixel light-emitting layer, 122 Green pixel light-emitting layer, 123 Blue pixel light-emitting layer, 130 Encapsulation layer, 140 Touch metal mesh layer, 141 Metal trace, 142 Hollow area, 150 Pixel combination, 160 Pixel repeating unit. Detailed Implementation

[0022] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The following is combined with Figures 1-5 This application describes a display module and an electronic device according to embodiments thereof.

[0027] Combination Figure 1 and Figure 2As shown, in some embodiments of this application, a display module 100 is proposed. The display module 100 includes: an array substrate 110, an electroluminescent layer 120, an encapsulation layer 130, and a touch metal mesh layer 140. A plurality of pixel light-emitting regions 111 are defined on the array substrate 110, and an electroluminescent layer 120 is disposed within any pixel light-emitting region 111. The encapsulation layer 130 is disposed on one side of the array substrate 110, and the touch metal mesh layer 140 is disposed on one side of the encapsulation layer 130. The array substrate 110, the encapsulation layer 130, and the touch metal mesh layer 140 are arranged along a first direction (…). Figure 1 (The arrow at A1 points to) stacked sequentially. The touch metal mesh layer 140 includes multiple intersecting metal traces 141, which enclose multiple hollow areas 142. The orthogonal projection of the hollow areas 142 onto the array substrate 110 covers the pixel light-emitting area 111. The light generated by the electroluminescent layer 120 is emitted from the display module 100 sequentially through the encapsulation layer 130 and the hollow areas 142. The touch metal mesh layer 140 is compared to the electroluminescent layer 120 in the second direction ( Figure 1 The arrow at A2 points to) and the third direction ( Figure 2 The ratio of the maximum light-blocking angle (pointing to the arrow at A3) is within a preset range, the second direction and the third direction are perpendicular to each other, and both the second direction and the third direction are perpendicular to the first direction.

[0028] The array substrate 110 serves as the supporting foundation for the display module 100. A patterned pixel definition layer is disposed on the array substrate 110. The pixel definition layer defines multiple pixel light-emitting regions 111 through photolithography. These pixel light-emitting regions 111 are used to limit the film formation range of subsequent functional layers, so that each electroluminescent layer 120 emits light independently without interference. The electroluminescent layer 120 is formed within the pixel light-emitting region 111. Under the drive of an electric field, the electroluminescent layer 120 realizes carrier injection and recombination to generate visible light. Since it is impossible to lay a large area metal pad under the anode layer in high-resolution products to achieve global planarization, there are micro-ripples on the anode surface caused by the underlying wiring. These ripples will cause large viewing angle color deviation.

[0029] An encapsulation layer 130 is disposed on the side of the electroluminescent layer 120 facing away from the array substrate 110. The encapsulation layer 130 is typically composed of alternating inorganic and organic layers. A touch metal mesh layer 140 is disposed on the side of the encapsulation layer 130 facing away from the electroluminescent layer 120. The touch metal mesh layer 140 includes multiple metal traces 141 patterned into a mesh structure by photolithography. The orthogonal projection of the hollow area 142 formed by adjacent metal traces 141 onto the array substrate 110 covers the pixel light-emitting area 111, ensuring that the light generated by the electroluminescent layer 120 can pass through the hollow area 142 and be emitted.

[0030] The maximum light-blocking angle quantifies the maximum critical angle at which light can be emitted in different directions without being blocked by the metal trace 141. The ratio of the maximum light-blocking angle of the touch metal mesh layer 140 to the electroluminescent layer 120 in different directions is within a preset range, which means that the light path blocking characteristics in different directions are matched in a coordinated manner. Due to the change in optical path difference caused by anode fluctuations, the brightness attenuation curves in different directions will have asymmetrical deviations. By controlling the ratio of the maximum light-blocking angles in different directions, a geometric blocking compensation amount that cancels out the anode defects is introduced, so that the effective light-emitting cone angle of the light in different directions tends to be consistent, thereby significantly reducing the color shift phenomenon at a large viewing angle. This solution can achieve viewing angle compensation without adding additional structures or changing the light-emitting layer material, and has the advantages of low cost and ease of implementation.

[0031] Combination Figure 1 and Figure 2 As shown, in one possible embodiment, the maximum angle between the emitted light from the electroluminescent layer 120 tilted toward the second direction and the first direction is α1, and the maximum angle between the emitted light from the electroluminescent layer 120 tilted toward the third direction and the first direction is α2, and the ratio of α1 to α2 is within a preset range.

[0032] The straight line H is set to pass through the center of the electroluminescent layer 120 and extend along the first direction. The shortest distance between H and the metal trace 141 along the second direction is L1. The shortest distance between H and the metal trace 141 along the third direction is L2. The distance between the electroluminescent layer 120 and the touch metal mesh layer 140 in the first direction is L3. The light blocking angle α1 = arctan(L1 / L3) and the light blocking angle α2 = arctan(L2 / L3) are within a preset range.

[0033] A straight line H is defined as passing through the center of the electroluminescent layer 120 and extending along a first direction. A second direction and a third direction are perpendicular to each other and both perpendicular to the first direction. Along the second direction, the shortest distance between the straight line H and the metal trace 141 is L1, representing the horizontal offset of the center of the electroluminescent layer 120 from the nearest shading boundary in the second direction. Along the third direction, the shortest distance between the straight line H and the metal trace 141 is L2, representing the vertical offset of the center of the electroluminescent layer 120 from the nearest shading boundary in the third direction. The distance between the electroluminescent layer 120 and the touch metal mesh layer 140 in the first direction is L3, which is mainly determined by the thickness of the encapsulation layer 130 and represents the vertical distance from the light source to the shading plane. Based on the above geometric relationships, the light-blocking angles α1=arctan(L1 / L3) and α2=arctan(L2 / L3) are defined. α1 and α2 quantify the maximum critical angles at which light can be emitted in the second direction and the third direction without being blocked by the metal trace 141. When the ratio of α1 to α2 is within a preset range, it means that the light path blocking characteristics in the two orthogonal directions are matched in a coordinated manner. Due to the change in optical path difference caused by anode fluctuations, the brightness attenuation curves in different directions will have asymmetrical deviations. By controlling the ratio of L1 to L2 relative to L3, a geometric blocking compensation amount that cancels out the anode defect is introduced, so that the effective light-emitting cone angle of the light in the second direction and the third direction tends to be consistent, thereby significantly reducing the color shift phenomenon at a large viewing angle. This scheme can achieve viewing angle compensation without adding additional structures or changing the light-emitting layer material, and has the advantages of low cost and easy implementation.

[0034] In one possible embodiment, α1 and α2 satisfy the following condition: 0.8 ≤ α1 / α2 ≤ 1.2.

[0035] The ratio of the light-blocking angles α1 and α2 is further limited to the range of 0.8 to 1.2. When α1 / α2 is less than 0.8, it indicates that the light-blocking angle α1 in the second direction is relatively too small, meaning that the metal trace 141 blocks the emitted light too severely in the second direction. This will result in a narrowing of the effective light-emitting cone angle in this direction, and the light will be excessively truncated at a large viewing angle, making the brightness attenuation rate in the second direction much higher than that in the third direction. Conversely, when α1 / α2 is greater than 1.2, it indicates that the light-blocking angle α1 in the second direction is relatively too large, meaning that the metal trace 141 does not block enough in the second direction, resulting in an excessively wide light-emitting cone angle in this direction. The light attenuation rate in the second direction is much lower than that in the third direction. Both of these situations will cause obvious color shift at large viewing angles. Whether α1 / α2 is less than 0.8 or greater than 1.2, it disrupts the matching of light path blocking in the two orthogonal directions, leading to the asymmetry of the brightness attenuation curve, and thus causing color shift defects that are perceptible to the human eye.

[0036] Limiting the ratio of α1 to α2 to between 0.8 and 1.2 ensures that the attenuation curves of the second and third directions remain highly overlapping in the wide viewing angle region, which is a guarantee for achieving high-quality wide viewing angle display effects.

[0037] In one possible embodiment, the brightness decay curves of the electroluminescent layer 120 in the second direction and the third direction are related to the relative positions of the metal trace 141 and the electroluminescent layer 120.

[0038] The position of the metal trace 141 relative to the electroluminescent layer 120 determines the brightness decay curve of the electroluminescent layer 120 in the second or third direction. For example, when the metal trace 141 approaches the center of the electroluminescent layer 120, L1 or L2 decreases, and the corresponding light-blocking angle α1 or α2 becomes smaller, making it easier for light to be blocked in a certain direction, thus accelerating the brightness decay in that direction. Conversely, when the metal trace 141 is far away from the center of the electroluminescent layer 120, the light-blocking angle increases, making it easier for light to escape, thus delaying the brightness decay in that direction. Based on the actual optical path difference distribution caused by anode undulations, the position of the metal trace 141 relative to the electroluminescent layer 120 can be selectively set to achieve consistency in the brightness decay curves of pixels in different directions, effectively addressing complex optical interference problems under high-resolution pixel density.

[0039] In one possible embodiment, the brightness decay curves of the electroluminescent layer 120 in the second direction and the third direction are related to the spacing of the adjacent metal traces 141 in the second direction; or, the brightness decay curves of the electroluminescent layer 120 in the second direction and the third direction are related to the spacing of the adjacent metal traces 141 in the third direction.

[0040] The brightness decay curve is altered by adjusting the spacing of adjacent metal traces 141 in the hollowed-out area 142 in the second or third direction. The size of the hollowed-out area 142 directly determines the values ​​of L1 and L2. Increasing the spacing of the metal traces 141 in a certain direction essentially increases L1 or L2 in that direction, thereby expanding the light-emitting cone angle in that direction and slowing down the brightness decay in that direction. For example, if the physical size of the blue pixel emitting layer 123 is longer in the second direction, resulting in slower brightness decay in the second direction, the brightness decay can be accelerated by reducing the trace spacing in the second direction, matching the brightness decay rate in the second direction with that in the third direction, thereby significantly reducing color shift at wide viewing angles.

[0041] In one possible embodiment, the luminance decay curves of the electroluminescent layer 120 in the second direction and the third direction are related to the size of the electroluminescent layer 120 in the second direction, or the luminance decay curves of the electroluminescent layer 120 in the second direction and the third direction are related to the size of the electroluminescent layer 120 in the third direction.

[0042] By adjusting the size of the electroluminescent layer 120 in the second or third direction, the brightness decay curve is adjusted, thereby affecting the values ​​of L1 and L2 from the source. For example, when the size of the electroluminescent layer 120 in the second direction is increased, the value of L1 will change even if the position of the metal trace 141 remains unchanged, which in turn affects the light blocking angle in this direction, so that the brightness decay in the second direction matches the brightness decay rate in the third direction, thereby significantly reducing the color shift phenomenon at a large viewing angle.

[0043] Of course, in other embodiments, the spacing of adjacent metal traces 141 in the hollowed-out area 142 along the second direction or the third direction can be adjusted, while the size of the electroluminescent layer 120 in the second direction or the third direction can be adjusted.

[0044] It should be noted that when the size of the electroluminescent layer 120 needs to be adjusted, the size of the pixel light-emitting area 111 is adjusted simultaneously.

[0045] Combination Figure 1 , Figure 2 and Figure 3 As shown, in one possible embodiment, the brightness decay curves of the electroluminescent layer 120 in the second direction and the third direction are related to the spacing between the electroluminescent layer 120 and the touch metal mesh layer 140 in the first direction.

[0046] In this embodiment, the brightness attenuation curve is adjusted by adjusting the spacing between the electroluminescent layer 120 and the touch metal mesh layer 140 in the first direction. The size of L3 mainly depends on the deposition thickness of the inorganic and organic layers in the encapsulation layer 130. When L3 increases, the light blocking angles α1 and α2 will decrease while L1 and L2 remain unchanged. However, when L1 and L2 are not equal, the changes in α1 and α2 are different as L3 changes, so that the values ​​of α1 and α2 can gradually approach each other, making the effective light emission cone angles of the light in the second and third directions tend to be consistent, thereby reducing the color shift phenomenon.

[0047] Combination Figure 4 and Figure 5As shown, in one possible embodiment, the plurality of electroluminescent layers 120 include a red pixel light-emitting layer 121, a green pixel light-emitting layer 122, and a blue pixel light-emitting layer 123. Adjacent red pixel light-emitting layers 121, green pixel light-emitting layers 122, and blue pixel light-emitting layers 123 form a pixel combination 150, and a plurality of adjacent pixel combinations 150 form a pixel repetition unit 160. In a pixel repetition unit 160, a pixel combination 150 is rotated by a set angle relative to its adjacent pixel combinations 150.

[0048] In a pixel repeating unit 160, a pixel group 150 is rotated by a set angle relative to its adjacent pixel groups 120. The purpose of this rotation is to counteract the directional light attenuation differences of a single electroluminescent layer 120. For example, the light emitted by the red pixel luminescent layer 121 exhibits a faster brightness attenuation characteristic in the second direction and a relatively gentle attenuation characteristic in the third direction. If all pixel groups 150 maintain the same arrangement direction, the overall color shift of the displayed image in the second direction cannot be eliminated. By rotating a pixel group 150 by a set angle relative to its adjacent pixel groups 120, such as rotating it by 90 degrees, the long axis direction or attenuation-sensitive direction of adjacent pixel groups 150 is staggered. When an observer looks at the area where a pixel repeating unit 160 is located, the optical information received by the human eye is the average value of the light intensity superimposed in multiple directions of the red pixel luminescent layer 121, the green pixel luminescent layer 122, and the blue pixel luminescent layer 123. The rotated pixel group 150 fills the area of ​​rapid attenuation in the second direction of the adjacent pixel group 120 with the originally gentler attenuation characteristic in the third direction. This complementary effect is particularly pronounced in the high-resolution display module 100 with smaller pixel size, because within the tiny pixel repeating unit 160, the light emitted by multiple pixel combinations 150 quickly mixes after leaving the display module 100, making it difficult for the human eye to distinguish the directional attenuation characteristics of a single pixel combination 150, and instead perceiving an overall uniform white light or colored light field, thereby greatly reducing the color shift phenomenon caused by inconsistent attenuation in a single direction.

[0049] This rotation arrangement does not change the relative geometric relationship between the metal traces 141 and the electroluminescent layer 120 in the touch metal mesh layer 140. That is, the ratio of the light blocking angles α1 to α2 remains effective. The rotation operation only optimizes the spatial distribution of the pixel combination 150 itself, so that the optical compensation scheme in the above embodiment can generate synergistic gain with the pixel arrangement structure, reduce the risk of display unevenness caused by process fluctuations, and improve the display effect of the display module 100.

[0050] Combination Figure 4 and Figure 5As shown, in one possible embodiment, in a pixel repetition unit 160, a plurality of pixel combinations 150 are arranged circumferentially along the center of the pixel repetition unit 160. Figure 5 The distribution (as indicated by the arrow at point C) ensures that the angle between any two adjacent pixel combinations 150 remains constant, thus making the arrangement order of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123 in the circumferential direction have a certain regularity. This allows light energy to be more evenly dispersed in the two-dimensional plane, and the light attenuation characteristics of each pixel combination 150 in the second or third direction are averaged within a 360-degree range, effectively avoiding color shift caused by a single pixel arrangement direction.

[0051] Combination Figure 4 and Figure 5 As shown, in one possible embodiment, in a pixel repeating unit 160, multiple pixel combinations 150 surround to form a central hole 112, and in a first direction, the central hole 112 corresponds to the intersection of multiple metal traces 141.

[0052] The intersection of the metal traces 141 has a high stacking height and is opaque. If the intersection covers the pixel combination 150, it will seriously block the effective light-emitting area. By arranging multiple pixel combinations 150 around the center of the pixel repeating unit 160 to form a central hole 112, the intersection of the multiple metal traces 141 falls exactly within the range of the central hole 112, thereby avoiding the intersection of the metal traces 141 from blocking the pixel combination 150 and improving the light energy utilization of the pixel.

[0053] The central hole 112 can also be used as an alignment mark in the fabrication process to help the photolithography equipment accurately align the relative positions of the touch metal mesh layer 140 and the array substrate 110.

[0054] This application relates to a panel design scheme aimed at solving the problem of inconsistent brightness attenuation in the horizontal and vertical directions for high-resolution products, especially Real RGB (RealRed Green Blue) products. The main improvement of this application is: designing the pixel shape through optical simulation, utilizing the differences in pixel shape length and width to compensate for the inconsistent brightness attenuation caused by differences in anode flatness. To achieve the maximum display area, Real RGB typically uses a triangular arrangement of red, blue, and green pixels. Since blue light has the lowest light emission efficiency, the blue light area is designed to be the largest. In this case, although the distance between the touch metal mesh layer 140 and the pixel edge is the same, the distance from the pixel center to the pixel's edge along the horizontal direction (second direction) and along the vertical direction (third direction) is different, resulting in differences in brightness attenuation. Furthermore, due to the high metal density in the pixel design (referring to the structure formed by filling the electroluminescent layer 120 within the pixel's light-emitting area 111), designers can only try to ensure symmetry in the horizontal and vertical directions, but this symmetry cannot be guaranteed, leading to inconsistent brightness attenuation in the horizontal and vertical directions. This application optimizes the pixel aspect ratio to compensate for the inconsistent brightness decay caused by the underlying design.

[0055] The specific solution is as follows: After completing the array pixel design, extract the cross-sectional schematic diagrams of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123 in the horizontal and vertical directions. Design the emitting area and aspect ratio of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123, and simulate the brightness attenuation of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123 in the horizontal and vertical directions. Optimize the aspect ratio of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123 to make the brightness attenuation of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123 in the horizontal and vertical directions consistent. Design the touch panel sensor and adjust the distance from the touch metal mesh layer 140 to the pixels to make the brightness attenuation of the red pixel emitting layer 121, green pixel emitting layer 122, and blue pixel emitting layer 123 in the horizontal and vertical directions basically consistent.

[0056] A group of red pixel emitting layers 121, green pixel emitting layers 122, and blue pixel emitting layers 123 constitutes a pixel combination 150. Four pixel combinations 150 are stacked to form a pixel repeating unit 160. In this design, each pixel combination 150 within a pixel repeating unit 160 is rotated by 90° / 180° / 270°. Metal traces 141 are used for line replacement in the blank spaces in the middle of the pixel repeating unit 160. By adjusting the width of the red pixel emitting layers 121 and blue pixel emitting layers 123, the aperture ratio of the pixel repeating unit 160 can be adjusted.

[0057] By setting the length and width of the electroluminescent layer 120, obtaining raw data on brightness attenuation of the electroluminescent layer 120 from different viewing angles, setting the thickness of the film layer above the electroluminescent layer 120 and the encapsulation layer 130, and setting the relative position of the touch metal mesh layer 140, optical simulation is performed using optical modeling and lighting simulation design software to output the brightness viewing angle curve under the current design. By adjusting the length and width of the model, as well as the distance from the touch metal mesh layer 140 to the pixel center, different brightness viewing angle curves can be output. The optimal design scheme is selected based on consistent brightness attenuation in both the horizontal and vertical directions.

[0058] The horizontal distance from the center of the electroluminescent layer 120 to the metal trace 141 is 'a', and the height is 'b'. The light-blocking angle is arctan(a / b). Adjusting the value of a / b will yield different brightness decay curves.

[0059] For high-resolution organic light-emitting diode (OLED) display products, the brightness attenuation of the red pixel light-emitting layer 121 / green pixel light-emitting layer 122 / blue pixel light-emitting layer 123 in the horizontal and vertical directions can be adjusted by adjusting the distance between the touch metal mesh layer 140 and the array substrate 110. For example, if the brightness attenuation is faster in the horizontal direction than in the vertical direction, the lateral distance between the touch metal mesh layer 140 and the pixel can be adjusted to compensate for this by increasing / decreasing the lateral distance between the touch metal mesh layer 140 and the pixel in the horizontal direction, so that the viewing angles in the horizontal and vertical directions remain consistent.

[0060] For high-resolution organic light-emitting diode (OLED) display products, the brightness decay of the red pixel light-emitting layer 121 / green pixel light-emitting layer 122 / blue pixel light-emitting layer 123 in the horizontal and vertical directions can be adjusted by adjusting the shape and area of ​​the pixel light emission. For example, if the brightness decays faster in the horizontal direction than in the vertical direction, it can be compensated by increasing the light emission area in the horizontal direction / decreasing the light emission area in the vertical direction, so that the viewing angles in the horizontal and vertical directions remain consistent.

[0061] By adopting the solution of this application, it can be ensured that high-resolution, complex wiring organic light-emitting diode display products still maintain viewing angle consistency in both the horizontal and vertical directions.

[0062] In the embodiments of this application, an electronic device is proposed, which includes the display module 100 in any of the above embodiments, and the electronic device can achieve the technical effects in any of the above embodiments, which will not be repeated here.

[0063] For example, the electronic device can be a mobile phone, tablet computer, or desktop computer.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A display module, characterized in that, include: An array substrate, wherein a plurality of pixel light-emitting areas are defined on the array substrate; An electroluminescent layer is provided in any of the pixel light-emitting areas; An encapsulation layer is disposed on one side of the array substrate; A touch metal mesh layer is disposed on one side of the encapsulation layer. The array substrate, the encapsulation layer, and the touch metal mesh layer are stacked sequentially along a first direction. The touch metal mesh layer includes multiple metal traces that are distributed in a cross pattern. The multiple metal traces enclose multiple hollow areas. The orthographic projection of the hollow areas on the array substrate covers the pixel light-emitting area. The light generated by the electroluminescent layer is emitted from the display module sequentially through the encapsulation layer and the hollow areas. The ratio of the maximum light-blocking angle of the touch metal mesh layer to the electroluminescent layer in the second direction and the third direction is within a preset range. The second direction and the third direction are perpendicular to each other, and both the second direction and the third direction are perpendicular to the first direction.

2. The display module according to claim 1, characterized in that, The maximum angle between the emitted light from the electroluminescent layer tilted toward the second direction and the first direction is α1, and the maximum angle between the emitted light from the electroluminescent layer tilted toward the third direction and the first direction is α2. The ratio of α1 to α2 is within a preset range.

3. The display module according to claim 2, characterized in that, The brightness decay curves of the electroluminescent layer in the second direction and the third direction are related to the relative positions of the metal trace and the electroluminescent layer.

4. The display module according to claim 2, characterized in that, The brightness decay curves of the electroluminescent layer in the second direction and the third direction are related to the spacing between adjacent metal traces in the second direction; or The brightness decay curves of the electroluminescent layer in the second direction and the third direction are related to the spacing of the adjacent metal traces in the third direction.

5. The display module according to claim 2, characterized in that, The brightness decay curves of the electroluminescent layer in the second direction and the third direction are related to the size of the electroluminescent layer in the second direction, or The brightness decay curves of the electroluminescent layer in the second direction and the third direction are related to the size of the electroluminescent layer in the third direction.

6. The display module according to claim 2, characterized in that, The brightness decay curves of the electroluminescent layer in the second direction and the third direction are related to the spacing between the electroluminescent layer and the touch metal mesh layer in the first direction.

7. The display module according to any one of claims 1 to 6, characterized in that, The plurality of electroluminescent layers include a red pixel light-emitting layer, a green pixel light-emitting layer and a blue pixel light-emitting layer. Adjacent red pixel light-emitting layers, green pixel light-emitting layers and blue pixel light-emitting layers form a pixel combination, and a plurality of adjacent pixel combinations form a pixel repeating unit. In one of the pixel repeating units, a pixel combination is rotated by a set angle relative to the adjacent pixel combination.

8. The display module according to claim 7, characterized in that, In one pixel repeating unit, a plurality of pixel combinations are distributed circumferentially along the center of the pixel repeating unit.

9. The display module according to claim 8, characterized in that, In one pixel repeating unit, multiple pixels are combined to form a central hole, and in the first direction, the central hole corresponds to the intersection of multiple metal traces.

10. An electronic device, characterized in that, include: The display module as described in any one of claims 1 to 9.

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