Display module and display device

Abstract

The present disclosure relates to the technical field of display, and provides a display module and a display device. The display module comprises: a display panel, comprising a display region and a non-display region; a bezel region, the orthographic projection of the bezel region on the display panel overlapping the non-display region; an optical adhesive layer, the optical adhesive layer being arranged on a light exit side of the display panel; a cover plate, the cover plate being arranged on the side of the optical adhesive layer facing away from the display panel, and within the bezel region, at least one groove being formed on the surface of the side of the cover plate close to the display panel; and an ink layer, the ink layer being arranged in the bezel region and on the side of the cover plate close to the display panel, wherein the ink layer comprises a first portion an a second portion, the second portion is arranged on the side of the first portion away from the display region, and the second portion is arranged closer to the display panel than the first portion. The first portion is arranged in the groove, the second portion is configured to cover a portion of the surface of the side of the cover plate close to the display panel, and the orthographic projection of the optical adhesive layer on the display panel at least partially overlaps the orthographic projection of the first portion on the display panel.

Description

A display module and a display device

[0001] This disclosure claims priority to Chinese Patent Application No. 2024112043637, filed on August 29, 2024, entitled “A Display Module and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of display technology, and more specifically, to a display module and a display device. Background Technology

[0003] In recent years, with the rapid development of OLED display technology, the narrow bezel design of modules has become widely favored by consumers due to its high screen-to-body ratio, aesthetic appeal, and slim profile. However, as consumer demand for narrow bezels increases, technological bottlenecks are becoming increasingly apparent.

[0004] The bezel width of the display module depends on the bonding tolerance limits of the display panel and the amount of excess liquid optical adhesive. Currently, reducing the bonding tolerances of the display panel and improving equipment precision are extremely costly. Furthermore, the high fluidity of the liquid optical adhesive can cause excess adhesive during bonding, leading to a wider bezel. Therefore, reducing excess adhesive in the display module and achieving a narrow bezel design is a pressing issue that needs to be addressed in this field. Summary of the Invention

[0005] This disclosure provides a display module and a display device, aiming to solve the problem of how to reduce adhesive overflow and achieve a narrow bezel design for the display module.

[0006] A first aspect of this disclosure provides a display module, the display module comprising:

[0007] The display panel includes a display area and a non-display area;

[0008] The border area overlaps with the non-display area in the orthographic projection of the display panel;

[0009] An optical adhesive layer is disposed on the light-emitting side of the display panel;

[0010] A cover plate is disposed on the side of the optical adhesive layer away from the display panel, and within the frame area, at least one groove is provided on the surface of the cover plate near the display panel.

[0011] An ink layer is disposed within the frame area and on the side of the cover plate near the display panel. The ink layer includes a first part and a second part, wherein the second part is disposed on the side of the first part away from the display area and is disposed relative to the first part near the display panel.

[0012] The first part is disposed in the groove, and the second part is configured to cover a portion of the surface of the cover plate near the display panel. The orthographic projection of the optical adhesive layer on the display panel at least partially overlaps with the orthographic projection of the first part on the display panel.

[0013] In one alternative embodiment, the orthographic projection of the edge of the optical adhesive layer on the display panel is located inside the orthographic projection of the first part on the display panel, or the orthographic projection of the edge of the optical adhesive layer on the display panel coincides with the orthographic projection of the edge of the first part away from the display area on the display panel.

[0014] In one alternative embodiment, the surface of the second part near the display panel is flush with the light-emitting surface of the display panel.

[0015] In one alternative embodiment, the width of the groove along the first direction is less than or equal to a first width, the first width being the width of the edge of the first part near the display area and the edge of the display panel within the border area along the first direction, the first direction being the arrangement direction of the display area and the border area.

[0016] In one alternative embodiment, the depth of the groove along the second direction is less than or equal to half the thickness of the cover plate along the second direction, where the second direction is the direction in which the cover plate points toward the display panel.

[0017] In one alternative embodiment, the depth of the groove along the second direction is greater than or equal to 0.01 mm and less than or equal to 0.3 mm, where the second direction is the direction in which the cover plate points toward the display panel.

[0018] In one alternative embodiment, the thickness of the second part along the second direction is greater than or equal to the depth of the groove along the second direction, where the second direction is the direction in which the cover plate points toward the display panel.

[0019] In one alternative embodiment, the border area includes a straight area and a corner area, and the groove is configured as an arcuate groove disposed in the corner area.

[0020] In one alternative embodiment, the projected area of ​​the groove on the display panel is greater than or equal to 3.8% and less than or equal to 4.5% of the area of ​​the corner area where the groove is located.

[0021] In one alternative embodiment, there are multiple grooves, which are arranged at intervals along a first direction, where the first direction is the arrangement direction of the display area and the border area.

[0022] In one alternative embodiment, the groove includes a first groove and a second groove arranged at intervals, the first groove being disposed close to the display area;

[0023] The edge of the first groove near the display area is aligned with the edge of the first part near the display area, and the edge of the second groove away from the display area is aligned with the edge of the display panel within the border area.

[0024] In one alternative embodiment, the width of each groove along a first direction is greater than or equal to 0.04 mm and less than or equal to 0.1 mm, where the first direction is the arrangement direction of the display area and the border area.

[0025] In one alternative embodiment, the groove is completely filled by the first part, and the side surface of the first part near the display panel is configured to be flush with the side surface of the cover plate near the display panel.

[0026] In one alternative embodiment, the first part fills a portion of the groove, and the portion of the groove not filled by the first part is filled with the material of the optical adhesive layer.

[0027] In one alternative embodiment, within the groove, the first portion is disposed on the side of the optical adhesive layer away from the display panel, and the first portion completely covers the bottom of the groove.

[0028] In one alternative embodiment, the thickness of the first portion gradually increases along a second direction in a first direction, where the first direction is the arrangement direction of the display area and the frame area, and the second direction is the direction in which the cover plate points towards the display panel.

[0029] In one alternative embodiment, the orthographic projection shape of the side surface of the first part closest to the display panel on the first plane is a straight line, an arc, a step, or other irregular shape, and the first plane is a plane perpendicular to the light-emitting surface of the display panel.

[0030] A second aspect of this disclosure provides a display device, the display device including a display module as described in any one of the first aspects of this disclosure. Beneficial effects:

[0031] This disclosure provides a display module and a display device. The display module includes: a display panel, including a display area and a non-display area; a bezel area, whose orthographic projection on the display panel overlaps with the non-display area; an optical adhesive layer disposed on the light-emitting side of the display panel; a cover plate disposed on the side of the optical adhesive layer away from the display panel, wherein at least one groove is provided on the surface of the cover plate near the display panel within the bezel area; and an ink layer disposed within the bezel area and on the side of the cover plate near the display panel, the ink layer including a first portion and a second portion, wherein the second portion is disposed on the side of the first portion away from the display area and is disposed near the display panel relative to the first portion; the first portion is disposed within the groove, and the second portion is configured to cover a portion of the surface of the cover plate near the display panel, wherein the orthographic projection of the optical adhesive layer on the display panel at least partially overlaps with the orthographic projection of the first portion on the display panel. This disclosure places the second part of the ink layer at a position close to the first part near the display panel, so that a step difference is formed between the second part and the first part. When the optical adhesive layer is attached to the display panel, the second part blocks the outward expansion of the optical adhesive layer, thereby reducing or even eliminating the step difference of the optical adhesive layer at the position of the ink layer, effectively reducing the amount of adhesive overflow of the optical adhesive layer, and realizing the narrow bezel design of the display module.

[0032] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 is a schematic diagram of a display module structure in which the first and second parts have the same thickness according to an embodiment of the present disclosure;

[0035] Figure 2 is a schematic diagram of a display module structure in which the thickness of the second part is greater than that of the first part, according to an embodiment of the present disclosure.

[0036] Figure 3 is a schematic diagram of a display module structure with increased groove depth according to an embodiment of the present disclosure;

[0037] Figure 4 is a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has a stepped cross-section according to an embodiment of the present disclosure;

[0038] Figure 5 is a schematic diagram of another display module structure in which the first part of the groove near the edge of the display panel has a stepped cross-section according to an embodiment of the present disclosure;

[0039] Figure 6 is a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has a straight cross-section according to an embodiment of the present disclosure;

[0040] Figure 7 is a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has an arc-shaped cross-section according to an embodiment of the present disclosure;

[0041] Figure 8 is a top view schematic diagram of a cover plate structure according to an embodiment of the present disclosure;

[0042] Figure 9 is a top view of area a of a cover plate with an arc-shaped groove in a corner area according to an embodiment of the present disclosure;

[0043] Figure 10 is a top view of area a of a cover plate with two arc-shaped grooves in a corner area according to an embodiment of the present disclosure;

[0044] Figure 11 is a top view of region b of a cover plate with a groove in a flat area according to an embodiment of the present disclosure;

[0045] Figure 12 is a top view of region b of a cover plate with two grooves in a flat area according to an embodiment of the present disclosure.

[0046] Explanation of reference numerals in the attached drawings: 11, display panel; 12, polarizer; 13, optical adhesive layer; 14, ink layer; 141, first part; 142, second part; 15, cover plate; 151, groove; 1511, first groove; 1512, second groove; A1, display area; A2, border area; B1, flat area; B2, corner area; X, first direction; Y, second direction. Specific Implementation

[0047] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0048] In the accompanying drawings, the size of constituent elements, the thickness of layers, or areas may sometimes be exaggerated for clarity. Therefore, any implementation of this disclosure is not necessarily limited to the dimensions shown in the drawings, and the shapes and sizes of the components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and any implementation of this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0049] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0050] In recent years, with the rapid development of OLED display technology, the narrow bezel design of modules has become widely favored by consumers due to its high screen-to-body ratio, aesthetic appeal, and slim profile. However, as consumer demand for narrow bezels increases, technological bottlenecks are becoming increasingly apparent.

[0051] The bezel width of the display module depends on the bonding tolerance limits of the display panel and the amount of excess liquid optical adhesive. Currently, reducing the bonding tolerances of the display panel and improving equipment precision are extremely costly. Furthermore, the high fluidity of the liquid optical adhesive can cause excess adhesive during bonding, leading to a wider bezel in the display module.

[0052] Specifically, during the bonding process of the cover glass, the bonding force and uniformity affect the amount of adhesive overflow in the optical adhesive layer. For example, if the bonding force of the cover glass is too great, the liquid optical adhesive will overflow more into the bezel area when the cover glass squeezes it. The bezel area of ​​the display module is used to contain the overflow of the optical adhesive layer, controlling the overflowing optical adhesive material within the bezel area to prevent the overflow from contaminating and damaging the display area. However, while a larger bezel width can increase the amount of overflow that can be contained, a larger bezel width will increase the overall size and weight of the display, which is not conducive to the design of thinner and lighter devices with narrower bezels.

[0053] In view of this, the present disclosure proposes a display module. Figure 1 shows a schematic diagram of a display module structure with the same thickness in the first and second parts according to an embodiment of the present disclosure. As shown in Figure 1, the display module includes: a display panel 11, which includes a display area A1 and a non-display area, wherein the non-display area can be disposed around the display area A1 on at least one side of the display area A1 (top, bottom, left, right); a border area A2, the orthographic projection of the border area A2 on the display panel 11 overlapping the non-display area; an optical adhesive layer 13, which is disposed on the light-emitting side of the display panel 11; and a cover plate 15, which is disposed on the side of the optical adhesive layer 12 away from the display panel 11. The optical adhesive layer 12 is used to achieve adhesion between the cover plate 15 and the display panel 11. The optical adhesive layer 12 has extremely high light transmittance (typically exceeding 90%), which helps to reduce light loss on the screen and thus improve the display effect. During the bonding process, the optical adhesive layer 12 is a liquid optical adhesive material that can cure at room temperature or medium temperature to form a stable and durable adhesive layer, ensuring a tight connection between the components of the display module.

[0054] In this embodiment, the display panel 11 can be a liquid crystal display (LCD), an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, etc., and is not specifically limited herein. It should be noted that the display panel 11 includes a light-emitting side. In this embodiment, the light-emitting side refers to the side of the display panel 11 from which light is emitted and faces the user. All the film layers mentioned in this embodiment are disposed on the light-emitting side of the display panel 11.

[0055] In this embodiment, the cover plate 15 serves as the outermost protective layer of the display module, directly contacting the external environment to prevent dust, moisture, oil, and other impurities from entering the interior of the display module, thereby protecting the display module from contamination and physical damage. The cover plate 15 is attached to the side of the optical adhesive layer 13 facing away from the display panel 11, and its bonding with other film layers of the display module is achieved through the adhesive effect of the optical adhesive layer 13.

[0056] In this embodiment, the display panel 11, the optical adhesive layer 13, and the cover plate 15 cover the display area A1. The edges of the display panel 11 and the optical adhesive layer 13, away from the display area A1, extend into the border area A2. The edge of the cover plate 15 is configured such that the border area A2 is away from the edge of the display area A1. Therefore, in a normal projection onto the display panel 11, the display panel 11 and the optical adhesive layer 13 are located inside the cover plate 15, and the edge of the cover plate 15 protrudes away from the display area A1 relative to the edges of the optical adhesive layer 13 and the display panel 11.

[0057] In some optional embodiments, the display module further includes a polarizer 12 disposed between the display panel 11 and the optical adhesive layer 13. The polarizer 12 is used to block reflected light and improve the display effect. The polarizer 12 covers the display area A1, and the edge of the polarizer 12 is aligned with the edge of the display panel 11.

[0058] During the bonding process of the cover plate 15, the liquid optical adhesive material will diffuse away from the display area A1 due to the bonding force. To prevent the diffused optical adhesive material from affecting the display area, an area is needed in the frame area A2 to accommodate the overflowing optical adhesive material (hereinafter, for ease of description, the area in the frame area A2 used to accommodate the overflowing optical adhesive material will be referred to as the accommodating area). The accommodating area includes a first edge and a second edge that are arranged opposite to each other. The first edge is the edge of the display panel 11 away from the display area A1, and the second edge is the edge of the cover plate 15 away from the display area A1. The overflowing optical adhesive material enters the accommodating area to prevent the optical adhesive material from adversely affecting the display area of ​​the display module.

[0059] In other words, in this embodiment of the disclosure, the amount of overflowing optical adhesive material that can be accommodated depends on the width of the accommodating area, which is part of the frame area A2. The larger the width of the frame area A2 (or the accommodating area) along the first direction X, the larger the amount of overflowing adhesive that can be accommodated. The first direction X is the arrangement direction of the display area A1 and the frame area A2. However, the larger the corresponding frame width of the display module, the more difficult it is to achieve a narrow frame design for the display module.

[0060] Therefore, in this embodiment, the display module further includes an ink layer 14, which is disposed within the frame area A2 and on the side of the cover plate 15 near the display panel 11. The edge of the frame area A2 near the display area A1 is the edge of the ink layer 14 near the display area A1. The ink layer 14 serves to shield light and improve the sealing between the cover plate 15 and the display module device. The ink layer 14 includes a first portion 141 and a second portion 142. The second portion 142 is disposed on the side of the first portion 141 away from the display area A1 and is disposed near the display panel 11 relative to the first portion 141. The orthographic projection of the optical adhesive layer 13 on the display panel 11 at least partially overlaps with the orthographic projection of the first portion 141 on the display panel 11.

[0061] In this embodiment of the present disclosure, within the frame area A2, at least one groove 151 is provided on the surface of the cover plate 15 near the display panel 11. A first portion 141 is disposed within the groove 151, and a second portion 142 is configured to cover a portion of the cover plate surface near the display panel. It is readily understood that since the first portion 141 and the second portion 142 are respectively disposed on both sides of the first edge (i.e., the edge of the display panel 11), and the second portion 142 is disposed on the side of the first portion 141 away from the display area A1, the groove 151 is disposed on the side of the first edge near the display area A1 corresponding to the first portion 141. The portion of the cover plate 15 covered by the second portion 142 is the cover plate area outside the groove 151, and the portion of the cover plate 15 covered by the second portion 142 is the portion of the cover plate area of ​​the groove 151 away from the display area A1.

[0062] In this embodiment, the first part 141 of the ink layer 14 is disposed inside the groove 151, and the second part 142 is disposed on the side surface of the cover plate 15 outside the groove 151 near the display panel 11. This makes the side surface of the first part 141 near the display panel 11 further away from the display panel 11 than the side surface of the second part 142 near the display panel 11, creating a step difference between the first part 141 and the second part 142. The groove 151 and the first part 141 disposed in the groove 151 are located on the side of the first edge near the display area A1. The optical adhesive layer 13 is disposed on the side of the first part 141 near the display panel 11 and on the side of the second part 142 near the display area A2. Thus, the structure of the first part 141 and the second part 142 effectively prevents the optical adhesive material from overflowing into the receiving area.

[0063] In some optional embodiments, the junction of the first part 141 and the second part 142 is aligned with the first edge of the receiving area. That is, the first part 141 is located on the side of the first edge closer to the display area A1, and the second part 142 is located on the side of the first edge closer to the frame area A2. When the optical adhesive layer 13 overflows without being subjected to adhesive force, the orthographic projection of the edge of the optical adhesive layer 13 on the display panel 11 is located inside the orthographic projection of the first part 141 on the display panel 11. When the optical adhesive layer 13 overflows away from the display area A1 under the action of adhesive force, the optical adhesive layer 13 is blocked by the second part 142, and the orthographic projection of the edge of the optical adhesive layer 13 on the display panel 11 coincides with the orthographic projection of the edge of the first part 141 away from the display area A1 on the display panel 11.

[0064] In this embodiment, the second part 142 is positioned closer to the display panel 11 than the first part 141, with the first part 141 located within the groove 151 and the second part 142 positioned on the cover surface outside the groove 151. This creates a step difference between the first part 141 and the second part 142 along the second direction Y. When the material of the optical adhesive layer 13 overflows away from the display area A1, the second part 142 blocks the movement of the optical adhesive material, thereby reducing the amount of overflow. The second direction Y is the direction from the cover 15 to the display panel 11. With reduced overflow, the adverse effects of overflowing optical adhesive material on the display module are mitigated. Furthermore, less overflow means that the width of the receiving area along the first direction X can be reduced, thus achieving a narrow bezel design for the display module. The existing bezel area A2 has a width of 0.41 mm along the first direction X. By setting the ink layer 14 according to the scheme of this embodiment, the amount of excess adhesive can be effectively reduced, thereby reducing the width of the bezel area A2 along the first direction X. Under the premise of ensuring the bonding tolerance of the display panel 11 and that the excess adhesive of the optical adhesive layer will not have an adverse effect on the display panel 11, the width of the bezel area A2 along the first direction X can be reduced by 0.1 mm (down to 0.31 mm), thereby realizing the narrow bezel design of the display module.

[0065] In some optional embodiments, the width of the groove 151 along the first direction X is less than or equal to a first width, where the first width is the width of the edge of the first portion 141 near the display area A1 along the first direction X and the edge of the display panel 11 within the border area A2. That is, the orthographic projection of the groove 151 onto the display panel 11 lies between the orthographic projection of the edge of the first portion 141 near the display area A1 and the edge of the display panel 11 within the border area A2 onto the display panel 11. Optionally, the first width is greater than or equal to 0.15 mm and less than or equal to 0.25 mm; exemplarily, the first width is 0.21 mm, and the width of the groove 151 along the first direction X is less than or equal to 0.21 mm.

[0066] In some optional embodiments, to avoid the groove 151 being too deep and affecting the protective function of the cover plate 15, the depth of the groove 151 along the second direction Y is less than or equal to half the thickness of the cover plate along the second direction Y. Optionally, the depth of the groove 151 along the second direction is greater than or equal to 0.01 mm and less than or equal to 0.3 mm, where the second direction is the direction from which the cover plate points to the display panel.

[0067] Optionally, Figure 3 shows a schematic diagram of a display module structure with increased groove depth. As shown in Figure 3, the width of the border area A2 along the first direction X is greater than or equal to 0.35 mm and less than or equal to 0.45 mm; the first width is greater than or equal to 0.15 mm and less than or equal to 0.25 mm; the width of the groove 151 along the first direction X is less than or equal to the first width; the depth of the groove 151 along the second direction Y is greater than or equal to 0.01 mm and less than or equal to 0.3 mm; the volume of the groove 151 is greater than or equal to 0.064 mm². 3 And less than or equal to 1.06mm 3 In this embodiment of the disclosure, the volume of the groove 151 is related to the depth of the groove along the second direction Y. By increasing the depth of the groove 151 along the second direction Y, the filling volume of the optical adhesive layer 13 material in the groove 151 can be increased, further reducing the amount of adhesive overflow.

[0068] For example, the width of the border area A2 along the first direction X is 0.41 mm, the width of the groove 151 along the first direction X is 0.21 mm, and the depth of the groove 151 along the second direction Y is 0.015 mm. In this case, the ratio of the width of the groove along the first direction X to the width of the border area A2 along the first direction X is 51.2%, and the projected area of ​​the groove 151 on the display panel 11 is 4.24 mm². 2 The volume of the groove 151 is 0.064 mm. 3 The groove 151 has a width of 0.21 mm along the first direction X and a depth of 0.25 mm along the second direction Y. Therefore, the volume of the groove 151 is 1.06 mm². 3 .

[0069] In some alternative embodiments, the second portion 142 of the ink layer 14 is used to block the optical adhesive layer 13 disposed on the side of the first portion 141 near the display panel 11 from moving toward the receiving area. The first portion 141 is disposed in the groove 151, and the second portion 142 is disposed on the surface of the cover plate 15 near the display panel 11. Therefore, the step difference between the second portion 142 and the first portion 141 depends on the thickness of the second portion 142 along the second direction Y. The greater the thickness of the second portion 142 along the second direction Y, the stronger the effect of blocking the overflow of the optical adhesive layer 13 along the first direction X.

[0070] In one embodiment, when the thickness of the second portion 142 along the second direction Y is the same as the depth of the groove 151 along the second direction Y, if the groove 151 is completely filled by the first portion 141, the second portion 142 and the first portion 141 of the ink layer 14 can be formed in one step, thereby reducing the process difficulty and process cost. For example, as shown in FIG1, the depth of the groove 151 along the second direction Y is 0.015 mm, and the thickness of the second portion 142 along the second direction Y is 0.015 mm.

[0071] In another embodiment, FIG2 shows a schematic diagram of a display module structure in which the thickness of the second part is greater than that of the first part according to an embodiment of the present disclosure. As shown in FIG2, in order to further improve the blocking effect of the second part 142 of the ink layer 14 on the optical adhesive layer 13, the thickness of the second part 142 along the second direction Y is greater than or equal to the depth of the groove 141 along the second direction Y. For example, the depth of the groove 151 along the second direction Y is 0.015 mm, and the thickness of the second part 142 along the second direction Y is 0.25 mm. In some optional embodiments, as shown in FIG2, the thickness of the second part 142 along the second direction Y is greater than or equal to the depth of the groove 141 along the second direction Y; the side surface of the second part 142 near the display panel 11 is flush with the light-emitting surface of the display panel 11, that is, the thickness of the second part 142 along the second direction Y is equal to the sum of the thicknesses of the polarizer 12 and the optical adhesive layer 13 along the second direction Y.

[0072] In some alternative embodiments, FIG8 shows a top view of a cover plate structure according to an embodiment of the present disclosure. As shown in FIG8, the frame area A2 of the display module includes a straight area B1 and a corner area B2, and the groove 151 can be disposed within the straight area B1 and / or the corner area B2. In one embodiment, FIG11 shows a top view of a cover plate b region with a groove disposed in the straight area according to an embodiment of the present disclosure. As shown in FIG11, when the groove 151 is disposed within the straight area B1, the groove 151 is a straight groove, and the extending direction of the straight groove is the same as the extending direction of the straight area B1 where the straight groove is located.

[0073] Since the width of the frame area A2 (and the receiving area) along the first direction X is used not only to accommodate the excess adhesive of the optical adhesive layer 13, but also to reserve a bonding tolerance for the bonding of the display panel 11, preventing the performance of the display module from being affected by misalignment during bonding, when the groove 151 is set to form the first part 141 and the second part 142 with a step difference, setting the groove 151 in the area with a large bonding tolerance can reduce the width of the frame area A2 (and the receiving area) along the first direction X to a greater extent. Specifically, the bonding tolerance of the corner area B2 is larger than that of the straight area B1. For example, the bonding tolerance of the corner area B2 is 0.21 mm, and the bonding tolerance of the straight area B1 is 0.15 mm. Therefore, in another embodiment, Figure 9 shows a top view of a cover plate area a with an arc-shaped groove in a corner area according to an embodiment of this disclosure. As shown in Figure 9, the groove 151 can also be disposed within the corner area B2. When the groove 151 is disposed within the corner area B2, the groove 151 is an arc-shaped groove, and the curvature of the arc-shaped groove is the same as the curvature of the corner area B2 where the arc-shaped groove is located. Optionally, the ratio of the orthographic projection area of ​​the groove 151 on the display panel 11 to the area of ​​the corner area B2 where the groove 151 is located is greater than or equal to 3.8% and less than or equal to 4.5%. For example, when the shape of the corner area B2 is a 1 / 4 semicircle, the shape of the arc-shaped groove is a 1 / 4 annular groove. In this case, the width (annular width) of the groove 151 along the first direction X is 0.21 mm, and the orthographic projection area of ​​the groove 151 on the display panel 11 is 4.24 mm. 2 The area of ​​the groove 151 is 4.24% of the area of ​​the corner area B2 where the groove is located. This indicates that the groove 151 achieves the narrow bezel design of the display module with a small area ratio, while ensuring that the cover plate 15 is not affected by the groove 151.

[0074] In some alternative embodiments, as shown in Figures 9 and 11, there may be one groove 151. When there is one groove 151, the maximum width of the groove 151 along the first direction X is the first width. That is, the groove 151 is located between the edge of the first part 141 near the display area A1 and the edge of the display panel 11 in the border area A2 in the orthographic projection of the display panel 11.

[0075] In some optional embodiments, there may be multiple grooves 151, which are spaced apart along the first direction X. The structure between adjacent grooves 151 has the same thickness as the cover plate 15 along the second direction Y. In this embodiment, by providing multiple spaced grooves 151, when the material of the optical adhesive layer 13 moves along the first direction X under the action of bonding pressure during the bonding process, it needs to pass through multiple spaced grooves 151 sequentially, thereby increasing the difficulty of the material of the optical adhesive layer 13 moving along the first direction X and further limiting the overflow of the optical adhesive layer 13. Optionally, in order to reduce the difficulty and cost of the process, the width of each groove 151 along the first direction X is the same, and the width of the groove 151 along the first direction X is the same as the width of the partition structure between two adjacent grooves 151 along the first direction X. For example, the width of each groove 151 along the first direction X is greater than or equal to 0.04 mm and less than or equal to 0.1 mm.

[0076] In one embodiment, FIG10 shows a top view of a cover plate area a with two arc-shaped grooves in a corner area according to an embodiment of the present disclosure. As shown in FIG10, the groove 151 is an arc-shaped groove provided in the corner area B2. The groove 151 includes a first groove 1511 and a second groove 1512 arranged at intervals. The first groove 1511 is located near the display area A1. The first groove 1511 and the second groove 1512 have the same curvature as the corner area B2 they are located in. The edge of the first groove 1511 near the display area A1 is aligned with the edge of the first part 141 near the display area A1. The edge of the second groove 1512 away from the display area A1 is aligned with the edge of the display panel 11 within the frame area A2. A partition structure is formed between the edge of the first groove 1511 away from the display area A1 and the edge of the second groove 1512 near the display area A1. The width of the partition structure, the first groove 1511, and the second groove 1512 along the first direction X is the same. For example, if the width of the edge of the first part 141 near the display area A1 and the edge of the display panel 11 within the frame area A2 along the first direction X is 0.21 mm, then the width of the partition structure, the first groove 1511, and the second groove 1512 along the first direction X is 0.07 mm.

[0077] In another embodiment, FIG12 shows a top view of a cover plate b region with two grooves in a flat area according to an embodiment of the present disclosure. As shown in FIG12, the groove 151 is a straight groove provided in the flat area B1. The groove 151 includes a first groove 1511 and a second groove 1512 arranged at intervals. The first groove 1511 is located near the display area A1. The extending directions of the first groove 1511 and the second groove 1512 are the same as the extending direction of the flat area B1 in which they are located. The edge of the first groove 1511 near the display area A1 is aligned with the edge of the first part 141 near the display area A1. The edge of the second groove 1512 away from the display area A1 is aligned with the edge of the display panel 11 in the frame area A2. The edge of the first groove 1511 away from the display area A1 and the edge of the second groove 1512 near the display area A1 form a partition structure between the first groove 1511 and the second groove 1512.

[0078] In some optional embodiments, as shown in FIG1, the groove 151 can be completely filled by the first part 141. In this case, the side surface of the first part 141 near the display panel 11 is configured to be flush with the side surface of the cover plate 15 near the display panel 11. The optical adhesive layer 13 is disposed on the side of the first part 141 near the display panel 11. Since the groove 151 is completely filled with the first part 141, the optical adhesive layer 13 is not filled into the groove 151. The edge of the optical adhesive layer 13 is attached to the side wall of the second part 142 near the display area A1, thereby preventing the optical adhesive layer 13 from overflowing.

[0079] It is easy to understand that when the groove 151 is completely filled by the first part 141, the first part 141 and the groove 151 have the same size. For details on the size setting of the first part 141, please refer to the above description on the size of the groove. This embodiment will not be repeated here.

[0080] In some optional embodiments, to further reduce the amount of adhesive overflow in the optical adhesive layer 13, a portion of the material of the optical adhesive layer 13 can be accommodated in the groove 151, allowing a larger volume of optical adhesive material to be accommodated on the side of the first edge near the display area A1. Specifically, the first part 141 fills a portion of the area within the groove 151, and the area within the groove 151 not filled by the first part 141 is filled with the material of the optical adhesive layer 13. During the bonding process of the cover plate 15, under bonding pressure, the optical adhesive material on the side of the first edge near the display area A1 will first enter the groove 151 to fill the area not filled by the first part 141, thereby reducing the overflow of the optical adhesive material into the accommodating area, and thus reducing the width of the bezel area A2, achieving a narrow bezel design for the display module.

[0081] Optionally, when the first part 141 fills a portion of the area within the groove 151, in order to avoid the optical adhesive layer 13 directly contacting the bottom of the groove 151 and thus affecting the performance of the display module, the first part 141 is disposed on the side of the material of the optical adhesive layer 13 away from the display panel 11 within the groove 151, and the first part 141 covers the bottom of the groove 151 entirely.

[0082] In some optional embodiments, since the excess adhesive in the optical adhesive layer 13 is caused by the movement of the optical adhesive material along the first direction X under bonding pressure, the movement of the optical adhesive material along the first direction X is easily caused when the surface covered by the optical adhesive layer 13 is a flat surface. Therefore, in this embodiment of the present disclosure, when the first part 141 fills a portion of the area within the groove 151, the material of the optical adhesive layer 13 within the groove 151 covers the side surface of the first part 141 near the display panel 11. In order to reduce the amount of material movement of the optical adhesive layer 13 along the first direction X, the thickness of the first part 141 gradually increases along the second direction Y in the first direction X, so that the side surface of the first part 141 near the display panel 11 forms a non-flat surface that does not extend along the first direction X, thereby reducing the amount of material movement of the optical adhesive layer 13 along the first direction X and reducing the excess adhesive phenomenon. Optionally, the orthographic projection shape of the side surface of the first part 141 near the display panel 11 on the first plane is a straight line, an arc, a step, or other irregular shape, and the first plane is a plane perpendicular to the light-emitting surface of the display panel 11.

[0083] In one embodiment, FIG4 shows a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has a stepped cross-section according to an embodiment of the present disclosure. As shown in FIG4, the first part 141 has a stepped cross-section along the first plane near the edge of the display panel 11. Along the direction from the display area A1 to the border area A2, the thickness of each step of the first part 141 increases sequentially along the second direction Y, forming a stepped structure that rises toward the border area A2.

[0084] In one embodiment, FIG5 shows a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has a stepped cross-section according to another embodiment of the present disclosure. As shown in FIG5, the first part 141 has a stepped cross-section along the first plane on one side edge near the display panel 11. Along the direction from the display area A1 to the border area A2, the thickness of each step of the first part 141 decreases sequentially along the second direction Y, forming a stepped structure that rises toward the display area A1.

[0085] In one embodiment, FIG6 shows a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has a straight cross-section according to an embodiment of the present disclosure. As shown in FIG6, the first part 141 has a straight cross-sectional shape along the first plane on one side edge near the display panel 11. Along the direction from the display area A1 to the border area A2, the thickness of the first part 141 along the second direction Y can gradually increase (as shown in FIG6), and the thickness of the first part 141 along the second direction Y can also gradually decrease.

[0086] In one embodiment, FIG7 shows a schematic diagram of a display module structure in which the first part of the groove near the edge of the display panel has an arc-shaped cross-section according to an embodiment of the present disclosure. As shown in FIG7, the cross-sectional shape of the first part 141 near the edge of the display panel 11 along the first plane is arc-shaped. Along the direction from the display area A1 to the border area A2, the thickness of the first part 141 along the second direction Y can gradually increase (as shown in FIG7), and the thickness of the first part 141 along the second direction Y can also gradually decrease.

[0087] This disclosure provides a display module, comprising: a display panel including a display area and a non-display area; a bezel area overlapping the non-display area in its orthographic projection onto the display panel; an optical adhesive layer disposed on the light-emitting side of the display panel; a cover plate disposed on the side of the optical adhesive layer away from the display panel, wherein at least one groove is provided on the surface of the cover plate near the display panel within the bezel area; and an ink layer disposed within the bezel area and on the side of the cover plate near the display panel, the ink layer comprising a first portion and a second portion, the second portion being disposed on the side of the first portion away from the display area and near the display panel relative to the first portion; the first portion being disposed within the groove, and the second portion being configured to cover a portion of the surface of the cover plate near the display panel, wherein the orthographic projection of the optical adhesive layer on the display panel at least partially overlaps the orthographic projection of the first portion on the display panel. This disclosure places the second part of the ink layer at a position close to the first part near the display panel, so that a step difference is formed between the second part and the first part. When the optical adhesive layer is attached to the display panel, the second part blocks the outward expansion of the optical adhesive layer, thereby reducing or even eliminating the step difference of the optical adhesive layer at the position of the ink layer, effectively reducing the amount of adhesive overflow of the optical adhesive layer, and realizing the narrow bezel design of the display module.

[0088] Based on the same inventive concept, this disclosure provides a display device, which includes a display panel as described in the embodiments of this disclosure.

[0089] In some optional embodiments, the display device includes, but is not limited to, any product or component with touch display function such as a television, laptop, tablet, mobile phone, personal digital assistant (PDA), navigator, wearable device, virtual reality (VR) device, etc. Those skilled in the art can make appropriate selections according to the actual use of the display device, and this disclosure will not elaborate further.

[0090] It should be noted that, in addition to the display panel, the display device also includes other necessary components and parts. Taking a monitor as an example, the display device may also include a housing, circuit board, power cord, etc. Those skilled in the art can make corresponding additions according to the specific usage requirements of the display device, which will not be elaborated here.

[0091] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0092] In the description of this specification, it should be understood that the terms "center," "thickness," "upper," "lower," "front," "rear," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to 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 disclosure.

[0093] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0094] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0095] The foregoing application provides many different implementations or examples for carrying out different structures of this disclosure. To simplify this disclosure, the components and arrangements of specific examples are described above. Of course, these are merely examples and are not intended to limit this disclosure. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0096] The terms "an embodiment," "embodiment," or "one or more embodiments" as used herein mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this disclosure. Furthermore, please note that the examples of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0097] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this disclosure may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0098] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only 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 terminal device 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 terminal device. 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 terminal device that includes said element.

[0099] The above provides a detailed description of a display module and display device provided by this disclosure. Specific examples have been used to illustrate the principles and implementation methods of this disclosure. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this disclosure. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this disclosure. Therefore, the content of this specification should not be construed as a limitation of this disclosure.

Claims

1. A display module, characterized in that, The display module includes: The display panel includes a display area and a non-display area; The border area overlaps with the non-display area in the orthographic projection of the display panel; An optical adhesive layer is disposed on the light-emitting side of the display panel; A cover plate is disposed on the side of the optical adhesive layer away from the display panel, and within the frame area, at least one groove is provided on the surface of the cover plate near the display panel. An ink layer is disposed within the frame area and on the side of the cover plate near the display panel. The ink layer includes a first part and a second part, wherein the second part is disposed on the side of the first part away from the display area and is disposed relative to the first part near the display panel. The first part is disposed in the groove, and the second part is configured to cover a portion of the surface of the cover plate near the display panel. The orthographic projection of the optical adhesive layer on the display panel at least partially overlaps with the orthographic projection of the first part on the display panel.

2. The display module according to claim 1, characterized in that, The orthographic projection of the edge of the optical adhesive layer on the display panel is located inside the orthographic projection of the first part on the display panel, or the orthographic projection of the edge of the optical adhesive layer on the display panel coincides with the orthographic projection of the edge of the first part away from the display area on the display panel.

3. The display module according to claim 1, characterized in that, The second part is flush with the light-emitting surface of the display panel on the side closest to the display panel.

4. The display module according to claim 1, characterized in that, The width of the groove along the first direction is less than or equal to the first width, where the first width is the width of the edge of the first part near the display area and the edge of the display panel within the border area along the first direction, and the first direction is the arrangement direction of the display area and the border area.

5. The display module according to claim 1, characterized in that, The depth of the groove along the second direction is less than or equal to half the thickness of the cover plate along the second direction, where the second direction is the direction in which the cover plate points toward the display panel.

6. The display module according to claim 1, characterized in that, The depth of the groove along the second direction is greater than or equal to 0.01 mm and less than or equal to 0.3 mm, where the second direction is the direction in which the cover plate points to the display panel.

7. The display module according to claim 1, characterized in that, The thickness of the second part along the second direction is greater than or equal to the depth of the groove along the second direction, where the second direction is the direction in which the cover plate points to the display panel.

8. The display module according to claim 1, characterized in that, The border area includes a straight area and a corner area, and the groove is configured as an arc-shaped groove in the corner area.

9. The display module according to claim 8, characterized in that, The area of ​​the recess projected onto the display panel is greater than or equal to 3.8% and less than or equal to 4.5% of the area of ​​the corner area where the recess is located.

10. The display module according to claim 1, characterized in that, The grooves are multiple, and the multiple grooves are arranged at intervals along a first direction, which is the arrangement direction of the display area and the border area.

11. The display module according to claim 10, characterized in that, The groove includes a first groove and a second groove arranged at intervals, with the first groove located close to the display area; The edge of the first groove near the display area is aligned with the edge of the first part near the display area, and the edge of the second groove away from the display area is aligned with the edge of the display panel within the border area.

12. The display module according to claim 10, characterized in that, The width of each groove along the first direction is greater than or equal to 0.04 mm and less than or equal to 0.1 mm, where the first direction is the arrangement direction of the display area and the border area.

13. The display module according to any one of claims 1-12, characterized in that, The groove is completely filled by the first part, and the surface of the first part near the display panel is configured to be flush with the surface of the cover plate near the display panel.

14. The display module according to any one of claims 1-12, characterized in that, The first part fills a portion of the groove, and the area of ​​the groove not filled by the first part is filled with the material of the optical adhesive layer.

15. The display module according to claim 14, characterized in that, Within the groove, the first part is disposed on the side of the optical adhesive layer away from the display panel, and the first part completely covers the bottom of the groove.

16. The display module according to claim 14, characterized in that, In a first direction, the thickness of the first part gradually increases along the second direction, where the first direction is the arrangement direction of the display area and the frame area, and the second direction is the direction in which the cover plate points to the display panel.

17. The display module according to claim 14, characterized in that, The orthographic projection shape of the first part's surface near the display panel onto the first plane is a straight line, an arc, a step, or other irregular shape, and the first plane is a plane perpendicular to the light-emitting surface of the display panel.

18. A display device, characterized in that, The display device includes a display module as described in any one of claims 1 to 17.

Images