Display module and display device

Abstract

This disclosure relates to a display module and display device. The display module includes an array substrate, a cover plate, and an integrated chip. The display module also includes a display area and a non-display area at least partially surrounding the display area. The array substrate and the cover plate are disposed opposite to each other. The integrated chip is located between the array substrate and the cover plate and within the non-display area. A first groove and a second groove are provided on the surface of the cover plate facing the array substrate. At least a portion of the integrated chip is located in the first groove, and at least a portion of the second groove surrounds the display area. A first light-shielding structure is provided in the second groove. On one hand, by providing the first groove on the cover plate, the integrated chip is avoided in height, thereby reducing the thickness of the display module's packaging structure and weakening the halo effect. On the other hand, by providing the second groove around the display area and providing the first light-shielding structure within it, the light leaking from the edge of the display area is absorbed by the first light-shielding structure, improving the display effect of the display module.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] In today's rapidly evolving technological landscape, display technology has permeated every aspect of life, from smart shop windows that outline the retail experience of the future, to interactive interfaces that add a touch of science fiction to home spaces, to head-up displays for car driving, to intelligent information displays in public spaces, and even the seamless integration of smartphones, wearable devices, and augmented reality (AR). Displays have become windows connecting the real and digital worlds.

[0003] However, along with its widespread application, a significant technical problem has gradually emerged—the halo effect. The halo effect refers to the formation of a softly edged, diffused ring of light around the light source, which can cause blurred image edges and color deviations, especially noticeable in low-light environments, severely impacting image clarity and realism. Therefore, effectively mitigating the halo effect and improving display quality has become an urgent problem to be solved. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this disclosure provides a display module and a display device.

[0005] In a first aspect, this disclosure provides a display module, including an array substrate, a cover plate, and an integrated chip; the display module further includes a display area and a non-display area disposed at least partially around the display area;

[0006] The array substrate and the cover plate are disposed opposite to each other. The integrated chip is located between the array substrate and the cover plate and in the non-display area. The surface of the cover plate facing the array substrate is provided with a first groove and a second groove. At least a portion of the integrated chip is located in the first groove. At least a portion of the second groove is disposed around the display area. A first light-shielding structure is provided in the second groove.

[0007] Secondly, this disclosure also provides a display device, including the display module as described above.

[0008] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0009] The technical solution provided in this disclosure involves setting a first groove and a second groove on the surface of a cover plate facing the array substrate. At least a portion of the integrated chip is located in the first groove, and at least a portion of the second groove surrounds the display area. A first light-shielding structure is provided in the second groove. Essentially, by setting the first groove on the cover plate, the integrated chip is avoided in height, thereby reducing the thickness of the display module packaging structure and weakening the halo effect. On the other hand, by setting the second groove around the display area and setting the first light-shielding structure therein, the light leaking from the edge of the display area is absorbed by the first light-shielding structure, thereby improving the display effect of the display module. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0011] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of an existing display module;

[0013] Figure 2 This is a schematic diagram illustrating the relationship between the encapsulation layer thickness and the lateral transmission distance of light, as given in an embodiment of this disclosure.

[0014] Figure 3 This is a top view of a display module provided in an embodiment of the present disclosure;

[0015] Figure 4 For along Figure 2 A schematic diagram of the cross-sectional structure formed after cutting from C1 to C2;

[0016] Figure 5 This is a cross-sectional structural diagram of another display module provided in an embodiment of the present disclosure;

[0017] Figure 6 This is a top view of another display module provided in an embodiment of the present disclosure;

[0018] Figure 7 This is a top view of another display module provided in an embodiment of the present disclosure;

[0019] Figure 8 This is a top view of another display module provided in an embodiment of the present disclosure;

[0020] Figure 9 This is a top view of another display module provided in an embodiment of the present disclosure;

[0021] Figure 10 This is a partial top view of another display module provided in an embodiment of the present disclosure;

[0022] Figure 11 This is a partial top view of another display module provided in an embodiment of the present disclosure;

[0023] Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of the present disclosure. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0025] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0026] Figure 1 This is a schematic diagram of the structure of an existing display module. See also... Figure 1 The display module includes an array substrate 10, a cover plate 20, an integrated chip 30, and an optical adhesive layer 40. The display module also includes a display area AA and a non-display area BB that is at least partially surrounding the display area AA.

[0027] The halo phenomenon is essentially a softly edged, diffused ring of light forming around the light source's luminous area. In the context of display modules, see [link to relevant documentation]. Figure 1 This effect is specifically manifested as: light rays emitted from the display area AA at a relatively small emission angle (such as...) Figure 1 The light rays (L1) emitted from the display module are less likely to undergo total internal reflection at the interface P between the cover plate 20 and the air, and can be directly emitted from the display area AA of the display module for image display. Large-angle light rays emitted from the display area (such as...) Figure 1 The light ray L2, due to its relatively large emission angle, is prone to total internal reflection at the interface P between the cover plate 20 and the air, resulting in lateral transmission of the light ray and thus forming a halo. The emission angle of the light ray refers to the angle between the direction of light ray emission from the array substrate and the direction perpendicular to the light-emitting surface of the array substrate.

[0028] The applicant's research revealed that the severity of halo effects is related to the thickness of the encapsulation layer (including the cover plate and optical adhesive layer). For example, suppose two different display modules have identical array substrates, cover plates, and integrated chip structures, dimensions, and layouts, differing only in the thickness of the optical adhesive layer. The difference in the thickness of the optical adhesive layer between the two display modules results in a difference in the thickness of their encapsulation layers.

[0029] For ease of understanding, these two display modules are drawn in the same structural diagram. See also Figure 2 In the first display module, the surface of the encapsulation layer furthest from the array substrate 10 is designated P', and the encapsulation layer thickness of the first display module is h2. In the second display module, the surface of the encapsulation layer furthest from the array substrate 10 is designated P'", and the encapsulation layer thickness of the second display module is h1. In the first display module, the lateral propagation distance of the light ray L2' emitted from point T with a larger emission angle is s2'. In the second display module, the lateral propagation distance of the light ray L2'" emitted from point T with a larger emission angle is s2'. Obviously, s2' > s2'. Therefore, it can be concluded that in practice, the greater the encapsulation layer thickness, the longer the lateral propagation distance of the light.

[0030] In practice, the thicker the encapsulation layer, the longer the lateral distance of light transmission, and the worse the impact on the display effect. Furthermore, if the light emitted from the display area propagates to the edge of the substrate, it will continue to propagate through the optical waveguide, resulting in edge light leakage, which also has a negative impact on the display effect.

[0031] In view of this, Figure 3 This is a top view of a display module provided in an embodiment of the present disclosure. Figure 4 For along Figure 2 A schematic diagram of the cross-sectional structure formed after cutting along line C1-C2. (See also...) Figure 3 and Figure 4 The display module includes an array substrate 10, a cover plate 20, and an integrated chip 30. The display module also includes a display area AA and a non-display area BB that at least partially surrounds the display area AA. The array substrate 10 and the cover plate 20 are disposed opposite to each other. The integrated chip 30 is located between the array substrate 10 and the cover plate 20 and is situated in the non-display area BB. A first groove D1 and a second groove D2 are provided on the surface of the cover plate 20 facing the array substrate 10. At least a portion of the integrated chip 30 is located in the first groove D1. The second groove D2 at least partially surrounds the display area AA, and a first light-shielding structure D21 is provided in the second groove D2.

[0032] In the above technical solution, the function of the first light-shielding structure D21 disposed in the second groove D2 is to absorb the edge leakage light that has already formed. (Continue to see...) Figure 3An arrow is drawn at the boundary point E of the display area AA, which indicates the edge light leakage point. The edge light leakage emitted from the boundary point E will be absorbed by the first light-shielding structure D21 in the second groove D2 near the boundary point E. Therefore, the halo effect can be weakened.

[0033] In one example, the first light-shielding structure D21 can be, for example, a black coating. In practice, the black coating can be applied to the sidewalls and / or bottom surface of the second groove D2. Exemplarily, in Figure 4 In the middle, a black coating is applied to the sidewalls and bottom surface of the second groove D2. That is, the black coating covers the sidewalls and bottom surface of the second groove D2.

[0034] See another example. Figure 5 The first light-shielding structure D21 can be, for example, a black filler. The black filler can fill the second groove D2. The black filler can be, for example, a black adhesive layer. The first light-shielding structure D21 can either completely fill the second groove D2 or not completely fill it.

[0035] If the distance between the surface of the first light-shielding structure D21 near the array substrate 10 and the surface of the array substrate 10 near the cover plate 20 is a first distance d1; and the minimum distance between the surface of the cover plate 20 near the array substrate 10 and the surface of the array substrate 10 near the cover plate 20 is a second distance d2; then the first light-shielding structure D21 completely fills the second groove D2, for example, meaning that the first distance d1 and the second distance d2 are equal. Alternatively, the first light-shielding structure D21 may not completely fill the second groove D2, for example, meaning that the first distance d1 is less than the second distance d2. For example, in... Figure 5 In the middle, the first light-shielding structure D21 fills the second groove D2.

[0036] The second groove is provided at least partially around the display area. For example, the second groove and the first light-shielding structure can be provided near a portion of the boundary of the display area, or the second groove and the first light-shielding structure can be provided near all the boundaries of the display area.

[0037] In some embodiments, the array substrate 10 may have multiple Micro LED chips and pixel driving circuits for driving the Micro LED chips to emit light. These pixel driving circuits are connected to a display driving chip via traces in the array substrate. The display driving chip is bonded to the array substrate 10 and is used to control the pixel driving circuits. In other embodiments, the array substrate 10 may also have multiple fingerprint recognition units, which are connected to a fingerprint recognition driving chip via traces in the array substrate. The fingerprint recognition driving chip is bonded to the array substrate 10 and is used to control the fingerprint recognition units. Similarly, other driving chips for implementing other functions may also be bonded to the array substrate 10. In this application, the integrated chip 30 may be a display driving chip, a fingerprint recognition driving chip, or other driving chips.

[0038] Those skilled in the art will understand, see Figure 1 If the display module is simply viewed as three parts: array substrate 10, cover plate 20, and optical adhesive layer 40 located between array substrate 10 and cover plate 20. Since the integrated chip 30 and its bonding structure are very thick, in practice, a relatively thick optical adhesive layer 40 needs to be provided between array substrate 10 and cover plate 20 to completely encapsulate the integrated chip 30 in the optical adhesive layer 40.

[0039] In the technical solution of this application, see Figure 4 or Figure 5 By providing a first recess D1 for accommodating the integrated chip 30, at least a portion of the integrated chip 30 is embedded in the first recess D1, forming an intercalation structure. This allows the optical adhesive layer 40 located between the array substrate 10 and the cover plate 20 to be made relatively thinner, thereby reducing the thickness of the encapsulation layer (including the cover plate 20 and the optical adhesive layer 40), reducing the lateral transmission distance of light, and weakening the halo effect.

[0040] It should be noted that "at least a portion of the integrated chip 30 is located in the first groove D1" means that this application does not limit the depth to which the integrated chip 30 is inserted into the first groove D1. For example, in practice, the depth to which the integrated chip 30 is inserted into the first groove D1 can be set to half, one-third, or one-quarter of the height of the integrated chip 30, etc.

[0041] The above technical solution involves setting a first groove and a second groove on the surface of the cover plate facing the array substrate. At least a portion of the integrated chip is located in the first groove, and at least a portion of the second groove surrounds the display area. A first light-shielding structure is provided in the second groove. Essentially, by setting the first groove on the cover plate, the integrated chip is avoided in height, thereby reducing the thickness of the display module packaging structure and weakening the halo effect. On the other hand, by setting the second groove around the display area and setting the first light-shielding structure in it, the first light-shielding structure absorbs the light leaking from the edge of the display area, thereby improving the display effect of the display module.

[0042] Based on the above embodiments, optionally, in the direction from the non-display area to the display area, the distance from the second groove to the display area is less than the distance from the first groove to the display area.

[0043] For example, see Figure 3 The minimum distance from the second groove D2 to the edge of the display area AA is m1, and the minimum distance from the first groove D1 to the edge of the display area AA is m2, where m1 < m2. This arrangement aims to make the second groove D2 as close as possible to the display area AA. The function of the second groove D2 is to absorb edge light leakage using its internal first light-shielding structure D21. The closer the second groove D2 is to the edge of the display area AA, the more edge light leakage it can absorb, which is more beneficial for improving the display effect of the display module.

[0044] Based on the above technical solution, optionally, in the direction from the non-display area BB to the display area AA, the width of the second groove D2 is smaller than the width of the first groove D1.

[0045] Since the first groove D1 is designed to house the integrated chip 30, to adequately protect the integrated chip 30 and prevent damage due to compression or collision caused by external forces during actual use, the size of the first groove D1 needs to be larger than the size of the integrated chip 30. For example, see... Figure 3 The length m6 of the first groove D1 is greater than the length m5 of the integrated chip 30, and the width m4 of the first groove D1 is greater than the width m3 of the integrated chip 30. Since the function of the second groove D2 is to absorb edge light leakage using its internal first light-shielding structure D21, it does not need to house the integrated chip. Therefore, its size is not limited by the size of the integrated chip 30. In the direction from the non-display area BB to the display area AA, the width of the second groove D2 is smaller than the width of the first groove D1. Essentially, this minimizes the width of the second groove D2. A smaller width of the second groove D2 is more conducive to achieving a narrow bezel design for the display module.

[0046] Optionally, in a direction perpendicular to the plane of the array substrate, the depth of the second groove D2 is greater than the depth of the first groove D1.

[0047] See Figure 3 Given a fixed thickness of the cover plate 20, a deeper first groove D1 means a smaller distance m7 between the bottom surface of the first groove D1 and the surface of the cover plate 20 away from the array substrate 10. Since the function of the first groove D1 is to accommodate the integrated chip 30, a smaller distance m7 between the bottom surface of the first groove D1 and the surface of the cover plate 20 away from the array substrate 10 results in weaker strength. During use, the risk of the cover plate cracking near the first groove D1 under external pressure is greater. In other words, a smaller distance m7 between the bottom surface of the first groove D1 and the surface of the cover plate 20 away from the array substrate 10 weakens its protective performance for the integrated chip 30.

[0048] As for the second groove D2, since its function is to absorb edge light leakage by means of the first light-blocking structure D21 inside it, the deeper it is, the larger the area and / or volume of the first light-blocking structure D21 is, and the more edge light leakage it can absorb.

[0049] By setting the second groove in a direction perpendicular to the plane of the array substrate, the depth of the second groove is greater than that of the first groove. Essentially, this ensures that the depths of both the first and second grooves are within a reasonable range, so that the cover plate near the first groove has high strength, effectively protecting the integrated chip and reducing the risk of damage to the integrated chip; and that the second groove is deep enough to ensure that the first light-shielding structure in the second groove can absorb as much edge light leakage as possible, effectively weakening the halo effect and reducing edge light leakage.

[0050] Based on the above technical solutions, optionally, see [reference needed]. Figure 4 and Figure 5 A second light-shielding structure D11 is provided in the first groove D1. This arrangement allows the second light-shielding structure D11 inside the first groove D1 to absorb edge light leakage, thereby further improving the display effect of the display module.

[0051] Similarly, in one example, the second light-shielding structure could be, for example, a black coating. In practice, the black coating could be applied to the sidewalls and / or bottom surface of the first recess. Exemplarily, in Figure 4In this design, the second light-shielding structure D11 is coated on the sidewalls and bottom surface of the first groove D1. That is, a black coating covers the sidewalls and bottom surface of the first groove D1. The advantage of this second light-shielding structure configuration is that the main function of the first groove D1 is to accommodate the integrated chip. By coating the second light-shielding structure D11 on the sidewalls and / or bottom surface of the first groove D1, the second light-shielding structure D11 occupies a relatively small space in the first groove D1, ensuring that the first groove D1 still has sufficient space to accommodate the integrated chip 30 after coating with the second light-shielding structure D11.

[0052] In another example, the second light-shielding structure D11 may optionally be a black filler, for example. The black filler may fill the first recess D1. The black filler may be, for example, a black adhesive layer. To ensure that the first recess D1 can accommodate the integrated chip, the black filler needs to be configured not to completely fill the first recess D1.

[0053] Based on the above technical solution, optionally, in one example, the second groove D2 is connected to the first groove D1 in the length direction of the integrated chip 30; or, the second groove D2 is connected to the first groove D1 in the width direction of the integrated chip 30.

[0054] For example, see Figure 6 The first groove D1 includes sidewalls D12 and D13 parallel to the Y-axis direction (i.e., the width direction of the integrated chip 30). The two ends of the second groove D2 are connected to the sidewalls D12 and D13 of the first groove D1 from both sides. Thus, the second groove D2 and the first groove D1 together form a closed annular structure surrounding the display area AA. This arrangement can absorb edge leakage light emitted from various positions along the edge of the display area AA, further improving the display effect of the display module.

[0055] Or see Figure 7 The first groove D1 includes a sidewall D14 parallel to the X-axis direction (i.e., the length direction of the integrated chip 30), and the second groove D2 is connected to the sidewall D14 of the first groove D1. Thus, the second groove D2 and the first groove D1 together form a closed annular structure surrounding the display area AA. This arrangement can absorb edge leakage light emitted from various positions along the edge of the display area AA, further improving the display effect of the display module.

[0056] Optionally, in another example, the non-display area includes a first non-display area located on one side of the display area, a first groove located in the first non-display area, and a second groove spaced apart from the first groove; the second groove is intermittently arranged in the first non-display area, and in the width direction of the integrated chip, the first groove covers the intermittent area of ​​the second groove. Here, "the second groove is spaced apart from the first groove" means that the first groove and the second groove are not connected.

[0057] For example, see Figure 8 The display area AA includes a first boundary A1, a second boundary A2, a third boundary A3, and a fourth boundary A4. These four boundaries together form a rectangle, which defines the display area AA. The non-display area BB near the fourth boundary A4 is the first non-display area. The second groove D2 includes a first part D21, a second part D22, a third part D23, a fourth part D24, and a fifth part D25. The first part D21 extends in the same direction as the first boundary A1 and is located near it. The second part D22 extends in the same direction as the second boundary A2 and is located near it. The third part D23 extends in the same direction as the third boundary A3 and is located near it. The fourth part D24 and the fifth part D25 both extend in the same direction as the fourth boundary A4 and are located near it. However, there is a discontinuity region N between the fourth part D24 and the fifth part D25. If this discontinuity region N is projected onto… Figure 8 On the X-axis, taking the range of the discontinuous region N on the X-axis as the first range, the integrated chip 30 is projected onto... Figure 8 On the X-axis, the range of integrated chip 30 is the second range. In the width direction of integrated chip 30 (i.e....) Figure 8 In the Y-axis direction, the first groove D1 covers the discontinuous area N of the second groove, that is, the first range is set within the second range.

[0058] Because the second groove has a discontinuity region N, it cannot absorb edge light leakage propagating toward the discontinuity region N. By setting the first groove to cover the discontinuity region of the second groove in the width direction of the integrated chip 30, the second light-shielding structure in the first groove can absorb the edge light leakage propagating toward the discontinuity region N that cannot be absorbed by the second groove. This achieves the purpose of absorbing edge light leakage emitted from each position of the edge of the display area AA.

[0059] Optionally, in another example, the non-display area includes a first non-display area located on one side of the display area, a first groove located in the first non-display area, and a second groove spaced apart from the first groove; the second groove is continuously arranged in the first non-display area, and in the direction from the first non-display area to the display area, the distance from the second groove to the display area is less than the distance from the first groove to the display area.

[0060] For example, see Figure 9The display area AA includes a first boundary A1, a second boundary A2, a third boundary A3, and a fourth boundary A4. These four boundaries together form a rectangle, which defines the display area AA. The non-display area BB near the fourth boundary A4 is the first non-display area. The second recess includes a first portion D21, a second portion D22, a third portion D23, and a fourth portion D24. The first portion D21 extends in the same direction as the first boundary A1 and is located near the first boundary A1. The second portion D22 extends in the same direction as the second boundary A2 and is located near the second boundary A2. The third portion D23 extends in the same direction as the third boundary A3 and is located near the third boundary A3. The fourth portion D24 extends in the same direction as the fourth boundary A4 and is located near the fourth boundary A4. The first part D21, the second part D22, the third part D23, and the fourth part D24 together form a closed ring structure, which can absorb edge leakage light emitted from various positions on the edge of the display area AA, so as to further improve the display effect of the display module.

[0061] Based on the above technical solutions, optionally, the display area includes irregularly shaped boundaries and non-irregularly shaped boundaries, the array substrate includes low-brightness light-emitting units and conventional light-emitting units located in the display area, the light emission brightness of the low-brightness light-emitting units is lower than that of the conventional light-emitting units; the second groove includes a first groove segment and a second groove segment, in the direction from the irregularly shaped boundary to the display area, the first groove segment overlaps with the irregularly shaped boundary, and the low-brightness light-emitting units are arranged adjacent to the irregularly shaped boundary; in the direction from the non-irregularly shaped boundary to the display area, the second groove segment overlaps with the non-irregularly shaped boundary, and the conventional light-emitting units are arranged adjacent to the non-irregularly shaped boundary; the first groove segment and the second groove segment satisfy at least one of (I), (II) and (III): (I) the distance from the first groove segment to the display area in the direction from the irregularly shaped boundary to the display area is greater than the distance from the second groove segment to the display area in the direction from the non-irregularly shaped boundary to the display area; (II) in the direction perpendicular to the plane of the array substrate, the depth of the first groove segment is less than the depth of the second groove segment; (III) the width of the first groove segment in the direction from the irregularly shaped boundary to the display area is less than the width of the second groove segment in the direction from the non-irregularly shaped boundary to the display area.

[0062] In some scenarios, the shape of the display area is not a right-angled rectangle, but other shapes (referred to as irregular shapes in this application), such as rounded rectangles, hexagons, octagons, etc. Display areas with irregular shapes are called irregular display areas.

[0063] The irregular display area includes irregular and non-irregular boundaries. Non-irregular boundaries are straight lines. Irregular boundaries include, for example, rounded corners, or boundaries with acute or obtuse angles. See also Figure 10The irregularly shaped display area is a rounded rectangle. Near the irregular boundary A6, multiple light-emitting units 11 are arranged in a stepped shape. During display, if the light-emitting units 11 near the irregular boundary A6 and the light-emitting units 11 near the non-irregular boundary A7 have the same brightness, the area near the irregular boundary A6 will have a strong jagged edge when displaying the image, affecting the display effect of the display module.

[0064] By setting the array substrate to include a low-brightness light-emitting unit 111 and a conventional light-emitting unit 112 located in the display area AA, the light-emitting brightness of the low-brightness light-emitting unit 111 is lower than that of the conventional light-emitting unit 112; the low-brightness light-emitting unit 111 is arranged adjacent to the irregular boundary A6; and the conventional light-emitting unit 112 is arranged adjacent to the non-irregular boundary A7, the light-emitting brightness of the light-emitting unit 111 near the irregular boundary A6 can be reduced, so as to visually reduce the jaggedness near the irregular boundary A6 when the image is displayed.

[0065] See also Figure 10 The second groove D2 includes a first groove segment D27 and a second groove segment D28. In the direction from the irregular boundary A6 towards the display area AA, the first groove segment D27 overlaps with the irregular boundary A6, meaning that the first groove segment D27 is adjacent to the irregular boundary A6 and is used to absorb edge light leakage emitted from the irregular boundary A6. In the direction from the non-irregular boundary A7 towards the display area AA, the second groove segment D28 overlaps with the non-irregular boundary A7, meaning that the second groove segment D28 is adjacent to the non-irregular boundary A7 and is used to absorb edge light leakage emitted from the non-irregular boundary A7.

[0066] See also Figure 10 The distance from the first groove segment D27 to the display area AA in the direction from the irregular boundary A6 to the display area AA is greater than the distance from the second groove segment D28 to the display area AA in the direction from the non-irregular boundary A7 to the display area AA. This means that the distance from the second groove segment D28 to the non-irregular boundary A7 is closer than the distance from the first groove segment D27 to the irregular boundary A6. Since the closer the distance to the boundary of the display area AA, the more edge light leakage from the boundary of the display area can be absorbed. This allows the second groove segment D28 to absorb more edge light leakage from the non-irregular boundary A7 compared to the first groove segment D27. Consequently, visually, the brightness of the low-brightness light-emitting unit 111 at its location is consistent with the brightness of the conventional light-emitting unit 112 at its location, achieving a visual balance between the brightness of the light-emitting units 11 at the irregular boundary A6 and the non-irregular boundary A7, thereby improving the display effect of the display module.

[0067] In the direction perpendicular to the plane of the array substrate, the depth of the first groove segment D27 is less than the depth of the second groove segment D28. This also means that, relative to the first groove segment D27, the second groove segment D28 can absorb more edge light leakage from the non-irregular boundary A7, which can achieve a visual balance between the brightness of the light-emitting units 11 at the irregular boundary A6 and the non-irregular boundary A7, thereby improving the display effect of the display module.

[0068] The width of the first recessed segment D27 in the direction from the irregular boundary A6 to the display area AA is smaller than the width of the second recessed segment D28 in the direction from the non-irregular boundary A7 to the display area AA. This arrangement allows the second recessed segment D28 to absorb more light leaking from the non-irregular boundary A7 compared to the first recessed segment D27, achieving a visual balance in the brightness of the light-emitting units at the irregular boundary A6 and the non-irregular boundary A7, thereby improving the display effect of the display module.

[0069] Based on the above technical solutions, optionally, the second groove includes a third groove segment and a fourth groove segment, and the array substrate includes a first color light-emitting unit and a second color light-emitting unit, wherein the light emission wavelength of the first color light-emitting unit is greater than the light emission wavelength of the second color light-emitting unit; in the direction from the non-display area to the display area, the third groove segment is disposed adjacent to the first color light-emitting unit, and the fourth groove segment is disposed adjacent to the second color light-emitting unit; the third groove segment and the fourth groove segment satisfy at least one of (I), (II) and (III): (I) in the direction from the non-display area to the display area, the distance from the third groove segment to the display area is greater than the distance from the fourth groove segment to the display area; (II) in the direction perpendicular to the plane of the array substrate, the depth of the third groove segment is less than the depth of the fourth groove segment; (III) in the direction from the non-display area to the display area, the width of the third groove segment is less than the width of the fourth groove segment.

[0070] In the direction from the non-display area to the display area, the third groove segment is adjacent to the first color light-emitting unit, and the fourth groove segment is adjacent to the second color light-emitting unit. This means that the third groove segment is located near the first color light-emitting unit and is used to absorb edge light leakage emitted from the first color light-emitting unit and leaking from the edge of the display area. The fourth groove segment is located near the second color light-emitting unit and is used to absorb edge light leakage emitted from the second color light-emitting unit and leaking from the edge of the display area.

[0071] For the same medium, the refractive index decreases as the wavelength of light increases. According to the law of refraction, the smaller the refractive index, the smaller the angle of refraction of light. A smaller angle of refraction means that the light travels more horizontally (i.e., parallel to the light-emitting surface of the display module, for example...). Figure 2The smaller the propagation distance (in the Y-axis direction), the lower the probability of light leakage and the less edge light leakage. That is, the larger the wavelength of light, the lower the probability of edge light leakage. The emission wavelength of the first color light-emitting unit is greater than that of the second color light-emitting unit, which means that the light emitted from the second color light-emitting unit is more likely to leak out and form edge light leakage compared to the light emitted by the first color light-emitting unit. At least one of (I), (II) and (III) is adopted: (I) in the direction from the non-display area to the display area, the distance from the third groove segment to the display area is greater than the distance from the fourth groove segment to the display area; (II) in the direction perpendicular to the plane of the array substrate, the depth of the third groove segment is less than the depth of the fourth groove segment; (III) in the direction from the non-display area to the display area, the width of the third groove segment is less than the width of the fourth groove segment. Essentially, according to the amount of edge light leakage formed by different color light-emitting units, corresponding groove segments are set to absorb edge light leakage, so that after absorption by the groove segments, the residual edge light leakage near the light-emitting units of different colors tends to be consistent, so as to improve the display effect of the display module.

[0072] For red, green, and blue light, arranged in descending order of wavelength, the order is: red > green > blue. In other words, at the boundary of the display area, the blue light-emitting unit emits the most light, followed by the green light-emitting unit, and finally the red light-emitting unit.

[0073] For example, see Figure 11 If the recessed segment near the blue light-emitting unit B is recessed segment D31, the recessed segment near the green light-emitting unit G is recessed segment D32, and the recessed segment near the red light-emitting unit G is recessed segment D33, then, in the direction from the non-display area BB to the display area AA, the distances from the recessed segments to the display area AA are arranged in descending order as D33 > D32 > D31. The widths of the recessed segments are arranged in descending order as D31 > D32 > D33. The depths of the recessed segments are arranged in descending order as D31 > D32 > D33. This arrangement ensures that the residual edge light leakage near the light-emitting units of different colors is more consistent, thereby improving the display effect of the display module.

[0074] Based on the above technical solutions, optionally, see [reference needed]. Figure 4 or Figure 5 The display module also includes an optical adhesive layer 40 located between the array substrate 10 and the cover plate 20; the optical adhesive layer 40 is used to fix the array substrate 10 and the cover plate 20 together.

[0075] Optionally, in the direction perpendicular to the plane of the array substrate (i.e., the Z-axis direction in the figure), the thickness of the optical adhesive layer 40 in the display area AA is less than the thickness of the optical adhesive layer 40 in the corresponding areas of the first groove D1 and / or the second groove D2. Essentially, this arrangement allows for the filling of gaps in the first groove D1 and the second groove D2 if such gaps exist, thereby improving the strength of the display module and the adhesion between the array substrate 10 and the cover plate 20.

[0076] It should be noted that the gaps in the first groove D1 may be due to the black coating, which serves as the second light-shielding structure, being applied to the sidewalls and / or bottom surface of the first groove D1, leaving gaps in the first groove D1, or gaps may be due to the black filler, which serves as the second light-shielding structure, not completely filling the first groove D1 after filling it.

[0077] Similarly, the gaps in the second groove D2 may be due to gaps remaining in the second groove D2 after the black coating, which serves as the first light-shielding structure, is applied to the sidewalls and / or bottom surface of the second groove D2, or gaps remaining because the black filler, which serves as the first light-shielding structure, does not completely fill the second groove D2 after filling it.

[0078] For example, during the manufacturing process of the display module, optical adhesive is applied to the surface of the array substrate 10 facing the cover plate 20 and / or the surface of the cover plate 20 facing the array substrate 10; after the optical adhesive is applied, the array substrate 10 and the cover plate 20 are aligned and pressure is applied to the array substrate 10 and the cover plate 20 so that the optical adhesive overflows into the first groove D1 and / or the second groove D2 to cure the optical adhesive.

[0079] Based on the same inventive concept, this application also provides a display device. Figure 12 This is a schematic diagram of a display device provided in an embodiment of this disclosure. See also... Figure 12 The display device includes the display module 60 as described above.

[0080] Since the display device provided in this embodiment includes the display module provided in this embodiment, which has the same or corresponding beneficial effects, it will not be described again here.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0082] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display module, characterized by The display module comprises an array substrate, a cover plate and an integrated chip; the display module further comprises a display area and a non-display area arranged at least partially around the display area; The array substrate is arranged opposite to the cover plate, the integrated chip is located between the array substrate and the cover plate and in the non-display area, a surface of the cover plate towards the array substrate is provided with a first groove and a second groove, at least part of the integrated chip is located in the first groove, forming an embedded structure; the second groove is arranged at least partially around the display area, and the second groove is provided with a first light shielding structure.

2. The display module of claim 1, wherein, In a direction from the non-display area to the display area, a distance from the second groove to the display area is smaller than a distance from the first groove to the display area.

3. The display module of claim 1, wherein, In the direction from the non-display area to the display area, a width of the second groove is smaller than a width of the first groove; and / or, in a direction perpendicular to a plane where the array substrate is located, a depth of the second groove is greater than a depth of the first groove.

4. The display module of claim 1, wherein, The first groove is provided with a second light shielding structure.

5. The display module of claim 4, wherein, In a length direction of the integrated chip, the second groove is in communication with the first groove; or, in a width direction of the integrated chip, the second groove is in communication with the first groove.

6. The display module of claim 4, wherein, The non-display area comprises a first non-display area located at one side of the display area, the first groove is located in the first non-display area, and the second groove is arranged spaced apart from the first groove; The second groove is arranged discontinuously in the first non-display area, and in the width direction of the integrated chip, the first groove covers a discontinuous area of the second groove; or, the second groove is arranged continuously in the first non-display area, and in the direction from the first non-display area to the display area, a distance from the second groove to the display area is smaller than a distance from the first groove to the display area.

7. The display module of claim 1, wherein, The display area comprises a special-shaped boundary and a non-special-shaped boundary, the array substrate comprises low-luminance light emitting units and conventional light emitting units in the display area, and luminance of the low-luminance light emitting units is lower than luminance of the conventional light emitting units; The second groove comprises a first groove segment and a second groove segment, in a direction from the special-shaped boundary to the display area, the first groove segment overlaps the special-shaped boundary, and the low-luminance light emitting units are arranged adjacent to the special-shaped boundary; in a direction from the non-special-shaped boundary to the display area, the second groove segment overlaps the non-special-shaped boundary, and the conventional light emitting units are arranged adjacent to the non-special-shaped boundary; The first groove segment and the second groove segment satisfy at least one of (I), (II), and (III): (I) a distance from the first groove segment to the display area in a direction from the non-irregular-shaped boundary to the display area is greater than a distance from the second groove segment to the display area in a direction from the irregular-shaped boundary to the display area; (II) a depth of the first groove segment is less than a depth of the second groove segment in a direction perpendicular to a plane on which the array substrate is located; and (III) a width of the first groove segment in the direction from the non-irregular-shaped boundary to the display area is less than a width of the second groove segment in the direction from the irregular-shaped boundary to the display area.

8. The display module of claim 1, wherein, The second groove includes a third groove segment and a fourth groove segment, the array substrate includes first color light emitting units and second color light emitting units, and an out-lighting wavelength of the first color light emitting units is greater than an out-lighting wavelength of the second color light emitting units; The third groove segment is disposed adjacent to the first color light emitting units in a direction from the non-display area to the display area, and the fourth groove segment is disposed adjacent to the second color light emitting units in the direction from the non-display area to the display area; The third groove segment and the fourth groove segment satisfy at least one of (I), (II), and (III): (I) a distance from the third groove segment to the display area in the direction from the non-display area to the display area is greater than a distance from the fourth groove segment to the display area; (II) a depth of the third groove segment is less than a depth of the fourth groove segment in a direction perpendicular to a plane on which the array substrate is located; and (III) a width of the third groove segment is less than a width of the fourth groove segment in the direction from the non-display area to the display area.

9. The display module of claim 1, wherein, The display module further includes an optical adhesive layer between the array substrate and the cover plate, and a thickness of the optical adhesive layer in the display area is less than a thickness of the optical adhesive layer in a region corresponding to the first groove and / or a region corresponding to the second groove.

10. A display device, characterized by comprising: The display module includes any one of the display modules of claims 1-9.

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