Lens, display module and display device

Abstract

Embodiments of the present application provide a lens, a display module and a display device. The lens comprises: a lens body having a first bonding surface for bonding to a flexible display panel, the lens body comprising a main body portion and a bending portion and a corner portion distributed in turn in a direction away from the center of the main body portion; the bending portion is provided with a first concave portion on the side facing the first bonding surface, and the corner portion is provided with a second concave portion on the side facing the first bonding surface. The first concave portion is arranged on the side of the bending portion facing the first bonding surface to increase the surface area of the bending portion on the side of the first bonding surface, thereby reducing the compression amount of the flexible display panel. The second concave portion is arranged on the side of the corner portion facing the first bonding surface to increase the surface area of the corner portion on the side of the first bonding surface, thereby reducing the compression amount of the flexible display panel, solving the problem that the flexible display panel is prone to wrinkles at the corner portion and the bending portion, and reducing the influence of the bending portion and the corner portion on the display effect of the flexible display panel.

Description

Technical Field

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

[0002] As people's requirements for display devices gradually increase, multi-curved display panels (such as four-curved panels) have emerged, further increasing the viewable area of ​​display devices. However, during the production process of multi-curved display panels, the flexible display panels are prone to wrinkles when bent at the four curved corners, which can lead to poor display quality. There is an urgent need to solve the problem of wrinkles at the four curved corners of multi-curved display panels. Summary of the Invention

[0003] This application provides a lens, a display module, and a display device, aiming to solve the problem of four-corner wrinkles in display panels.

[0004] An embodiment of the first aspect of this application provides a lens, comprising: a lens body having a first bonding surface for bonding to a flexible display panel, the lens body including a main body portion and a curved portion and a corner portion sequentially distributed in a direction away from the center of the main body portion; wherein, the lens body includes two adjacent sides and a bent edge connecting the two sides, the curved portion and the corner portion being disposed on the side of the bent edge facing the main body portion; a first concave portion is disposed on the side of the curved portion facing the first bonding surface, and a second concave portion is disposed on the side of the corner portion facing the first bonding surface.

[0005] According to some embodiments of this application, a second bonding surface is provided on the side of the lens body away from the first bonding surface. The second bonding surface is used to bond the cover plate. A light-shielding layer is provided on the side of the cover plate facing the lens body. The second bonding surface has a light-shielding area for bonding with the light-shielding layer. The orthographic projection of the second concave portion on the cover plate is located within the light-shielding area.

[0006] According to some embodiments of this application, the first recess and / or the second recess is part of a spherical surface.

[0007] According to some embodiments of this application, the main body has a planar portion for supporting a flexible display panel, and the second recessed portion is arc-shaped along an extension direction parallel to the planar portion.

[0008] According to some embodiments of this application, the arc shape includes two or more segments along the extension direction parallel to the plane, and the radii of the two or more arc shapes are different.

[0009] According to some embodiments of this application, along the extension direction parallel to the plane portion, the arc includes three segments, including a middle segment and two edge segments disposed on both sides of the middle segment, the radius of the middle segment being greater than the radius of the edge segments.

[0010] According to some embodiments of this application, the radius increment L of at least one segment of the arc of the second concave portion relative to the corner portion can be calculated by the following formula:

[0011] △S2=S-S2=S-2π(R+L)θ / 360=S-S1-2π*L*θ / 360

[0012] L=(S-S1-△S2)360 / (2π*θ)

[0013] Wherein, △S2 is the compression amount of the flexible display panel corresponding to the arc length of the second concave part, S is the arc length of the flexible display panel used to fit the corner part, S2 is the arc length of the second concave part, S1 is the arc length of the corner part, R is the radius of the corner part, and θ is the angle of the central angle corresponding to the second concave part.

[0014] The second aspect of this application provides a display module including the lens in any of the embodiments of the first aspect. The display module includes a flexible display panel, a lens body is attached to one side of the flexible display panel, and the lens body has a first recess and a second recess on the side facing the flexible display panel.

[0015] According to some embodiments of this application, the display module further includes a cover plate, the cover plate including a light-shielding layer, the orthographic projection of the second recessed portion on the cover plate being located within the light-shielding layer, and the material of the light-shielding layer including ink.

[0016] A third aspect of this application provides a display device, including the display module in any of the embodiments of the second aspect described above.

[0017] In the embodiments of this application, the curved portion and the corner portion are distributed sequentially in the direction away from the center of the main body. The curved portion is located at the edge of the main body on the side away from the center of the main body, and the corner portion is located at the edge of the curved portion on the side away from the center of the main body. That is, the main body, the curved portion and the corner portion are connected in sequence. The lens body includes two adjacent sides and a bent edge connecting the two sides. The curved portion and the corner portion are located on the side of the bent edge facing the main body. The side of the bent edge facing the main body consists of the corner portion and the curved portion in sequence. The side of the curved portion facing the first mating surface is provided with a first concave portion, and the side of the corner portion facing the first mating surface is provided with a second concave portion.

[0018] When the flexible display panel is bonded to the first bonding surface, it conforms to the shape of the first bonding surface. However, when the first bonding surface is bonded to the flexible display panel at curved and corner locations, the surface area of ​​these locations is smaller than that of the flexible display panel at those locations. This causes the flexible display panel to be compressed by the curved and corner locations during bonding, resulting in compression wrinkles. A first recess is provided on the side of the curved portion facing the first bonding surface to increase the surface area of ​​the curved portion on that side, thereby reducing the compression of the flexible display panel. Similarly, a second recess is provided on the side of the corner facing the first bonding surface to increase the surface area of ​​the corner on that side, further reducing the compression of the flexible display panel and solving the problem of wrinkles easily forming at corners and curved portions. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0020] Figure 1 This is a schematic diagram of the lens structure provided in the embodiments of this application;

[0021] Figure 2 yes Figure 1 Enlarged view of a portion of region A in the middle;

[0022] Figure 3 This is a schematic diagram of a partial lens structure provided in an embodiment of this application;

[0023] Figure 4 This is a partial structural diagram of the curved portion of the lens provided in an embodiment of this application;

[0024] Figure 5 This is a partial structural diagram of the curved and corner portions of the lens provided in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the corner structure of the lens provided in an embodiment of this application;

[0026] Figure 7 This is a partial structural diagram of the second concave portion of the lens provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 100, lens body; 110, first mating surface; 120, side edge; 130, bent edge; 140, second mating surface; 150, flat part; 200, curved part; 210, first concave part; 300, corner part; 310, second concave part; 311, middle section; 312, edge section; 400, cover plate; 410, light-shielding layer; 500, main body. Detailed Implementation

[0028] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0029] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In related technologies, as four-sided curved displays become the future trend, a simple way to highlight the four-sided curved effect on the front is to increase the bonding depth of the display module at the four sides and four corners as much as possible. According to the actual bonding verification of the current project, when the bonding depth at the four corners is large, since the flexible display panel is a rectangular structure before bonding, the area of ​​the flexible display panel at the four corners needs to be reduced to ensure tight bonding with the lens. The flexible display panel may experience compression and wrinkles at the four corners.

[0032] To better understand this application, the following will be combined with... Figures 1 to 6 The lens of the embodiment of this application will be described in detail.

[0033] The first aspect of this application provides a lens, such as Figures 1 to 5 As shown, the device includes: a lens body 100, which has a first bonding surface 110 for bonding to a flexible display panel. The lens body 100 includes a main body 500 and a curved portion 200 and a corner portion 300 sequentially distributed in a direction away from the center of the main body 500. The lens body 100 includes two adjacent sides 120 and a bent edge 130 connecting the two sides 120. The curved portion 200 and the corner portion 300 are disposed on the side of the bent edge 130 facing the main body 500. A first concave portion 210 is disposed on the side of the curved portion 200 facing the first bonding surface 110, and a second concave portion 310 is disposed on the side of the corner portion 300 facing the first bonding surface 110.

[0034] In the embodiments provided in this application, the curved portion 200 and the corner portion 300 are sequentially distributed in a direction away from the center of the main body portion 500. The curved portion 200 is located at the edge of the main body portion 500 on the side away from the center of the main body portion 500, and the corner portion 300 is located at the edge of the curved portion 200 on the side away from the center of the main body portion 500. That is, the main body portion 500, the curved portion 200 and the corner portion 300 are connected in sequence. The lens body 100 includes two adjacent side edges 120 and a bent edge 130 connecting the two side edges 120. The curved portion 200 and the corner portion 300 are located on the side of the bent edge 130 facing the main body portion 500. The side of the bent edge 130 facing the main body portion 500 consists of the corner portion 300 and the curved portion 200 in sequence. The side of the curved portion 200 facing the first mating surface 110 is provided with a first concave portion 210, and the side of the corner portion 300 facing the first mating surface 110 is provided with a second concave portion 310.

[0035] When the flexible display panel is bonded to the first bonding surface 110, it adapts to the shape of the first bonding surface 110. When the first bonding surface 110 is bonded to the flexible display panel at the curved portion 200 and the corner portion 300, the surface area of ​​the curved portion 200 and the corner portion 300 on the first bonding surface 110 is smaller than the surface area of ​​the flexible display panel at these locations. During bonding, the flexible display panel is compressed by the curved portion 200 and the corner portion 300, resulting in compression wrinkles. A first recessed portion 210 is provided on the side of the curved portion 200 facing the first bonding surface 110 to increase the surface area of ​​the curved portion 200 on that side, thereby reducing the compression of the flexible display panel. A second recessed portion 310 is provided on the side of the corner portion 300 facing the first bonding surface 110 to increase the surface area of ​​the corner portion 300 on that side, thereby reducing the compression of the flexible display panel and solving the problem of wrinkles easily forming on the flexible display panel at the corner portion 300 and the curved portion 200.

[0036] Optionally, the lens body 100 includes four sides 120, and two adjacent sides 120 are connected by a bent edge 130, that is, it includes four bent edges 130. The bent portion 200 and the corner portion 300 are disposed on the side of the bent edge 130 facing the main body 500. That is, the lens body 100 includes four bent portions 200 and corner portions 300, which are the four corner positions of the display panel.

[0037] In some alternative embodiments, such as Figure 5 As shown, a second bonding surface 140 is provided on the side of the lens body 100 away from the first bonding surface 110. The second bonding surface 140 is used to bond the cover plate 400. A light-shielding layer 410 is provided on the side of the cover plate 400 facing the lens body 100. The second bonding surface 140 has a light-shielding area for bonding with the light-shielding layer 410. The orthographic projection of the second recess 310 on the cover plate 400 is located within the light-shielding area.

[0038] In these optional embodiments, the second bonding surface 140 is positioned opposite to the first bonding surface 110. The second bonding surface 140 is used to bond the cover plate 400, and the first bonding surface 110 is used for the flexible display panel. The lens is located between the flexible display panel and the cover plate 400. A light-shielding layer 410 is provided on the side of the cover plate 400 facing the lens body 100. The light emitted by the light-emitting unit of the flexible display panel cannot pass through the light-shielding layer 410. The second bonding surface 140 has a light-shielding area that is bonded to the light-shielding layer 410. The orthographic projection of the second recess 310 on the cover plate 400 is located within the light-shielding area. The light emitted by the light-emitting unit of the flexible display panel passes through the second recess 310 and is emitted onto the light-shielding layer 410, where it is absorbed by the light-shielding layer 410. Because the second recess 310 increases the inner surface area of ​​the first bonding surface 110, the second recess 310 reduces the lens thickness of the corner portion 300. The light emitted from the light-emitting unit from the second recess 310 will have diffraction and refraction problems, thus affecting the display effect. By placing the orthogonal projection of the second recess 310 on the cover plate 400 within the light-shielding area, the light emitted by the light-emitting unit of the flexible display panel passes through the second recess 310 and is emitted onto the light-shielding layer 410 and absorbed by the light-shielding layer 410, thereby avoiding the diffraction and refraction phenomena of the light emitted from the light-emitting unit from the second recess 310 from affecting the display effect.

[0039] Optionally, the light-shielding layer 410 may include an ink material.

[0040] In some alternative embodiments, such as Figure 4 and Figure 6 As shown, the first recess 210 and / or the second recess 310 are part of a sphere.

[0041] In these optional embodiments, the first recess 210 is part of a sphere, or the second recess 310 is part of a sphere, or both the first recess 210 and the second recess 310 are part of a sphere. The spherical structure of the first recess 210 and the second recess 310 increases the inner surface area of ​​the first mating surface 110. Furthermore, the regular shape of the inner surface of the spherical structure makes it easy to process, and the surface area of ​​the first recess 210 and the second recess 310 can be calculated using the spherical surface area calculation formula. This allows for the calculation of the increase in surface area after the first recess 210 is provided in the curved portion 200, and also the calculation of the increase in surface area after the second recess 310 is provided in the corner portion 300, resulting in more precise dimensions when designing the first recess 210 and the second recess 310.

[0042] In some alternative embodiments, such as Figure 3 and Figure 6 As shown, the main body 500 has a flat portion 150 for supporting a flexible display panel, and the second recessed portion 310 is arc-shaped along the extending direction parallel to the flat portion 150.

[0043] In these optional embodiments, the lens body 100 includes a planar portion 150 and four side surfaces 160 connected to the planar portion 150. The planar portion 150 can be rectangular, and the four side surfaces 160 are respectively connected to the four sides of the rectangular planar portion 150. The planar portion 150 is used to support the flexible display panel. Two adjacent side surfaces 160 are perpendicular to each other and are connected by a corner portion 300. The corner portion 300 is a transition area connecting the two side surfaces 160. The corner portion 300 is arc-shaped along the extension direction parallel to the planar portion 150. The second concave portion 310 is adapted to the shape of the corner portion 300. The second concave portion 310 is arc-shaped along the extension direction parallel to the planar portion 150 to ensure that the thickness of the lens at the corner portion 300 is uniform and to prevent stress concentration caused by a large thickness difference in the lens. Figure 6 In the middle, the dotted arc shape represents the corner 300 located at the arc-shaped position of the first mating surface 110 where the second concave portion 310 is not provided.

[0044] In some alternative embodiments, such as Figure 6 As shown, the arc shape includes two or more segments along the extension direction parallel to the plane portion 150, and the radii of the two or more arc shapes are different.

[0045] In this embodiment, the second recessed portion 310 includes two or more arc segments extending along the extension direction parallel to the planar portion 150. The radii of the two or more arc segments are different to adapt to the curvature design of the display panel at the corner portion 300, ensuring that the thickness of the lens at the corner portion 300 located in the second recessed portion 310 is uniform, and preventing stress concentration caused by a large thickness difference in the lens. The radius of the arc segment near the side 160 is designed to be smaller than the radius of the arc segment away from the side 160. The arc segment near the side 160 connects to the two sides 160 of the lens. The smaller radius of the arc segment near the side 160 results in a smoother curvature change from the side 160 to the arc segment, preventing excessive curvature change from causing excessive compression of the flexible display panel area and resulting in wrinkles.

[0046] In some alternative embodiments, such as Figure 6 As shown, along the extension direction parallel to the planar portion 150, the arc includes three segments, including a middle segment 311 and two edge segments 312 disposed on both sides of the middle segment 311. The radius of the middle segment 311 is greater than the radius of the edge segments 312.

[0047] In these optional embodiments, the second recess 310 includes three arcuate segments extending in a direction parallel to the planar portion 150. Each arcuate segment includes a middle segment 311 and two edge segments 312 disposed on either side of the middle segment 311. The radius of the middle segment 311 is larger than the radius of the edge segments 312. The two edge segments 312 connect to two adjacent side edges 120. The smaller radius of the edge segments 312 results in a smoother curvature change as the side edges 120 enter the edge segments 312, preventing excessive curvature changes that could lead to excessive compression of the flexible display panel at the edge segments 312 and cause wrinkles.

[0048] The second recess 310 is divided into three arc segments connected in sequence, so that the curvature change of the second recess 310 is more gradual. That is, the radius of the edge segment 312 connecting the two sides 120 is smaller than the radius of the middle segment 311, reducing the problem of wrinkles caused by excessive curvature change in the flexible display panel.

[0049] In some alternative embodiments, such as Figure 6 As shown, the radius increment L of at least one segment of the arc of the second concave portion 310 relative to the corner portion 300 can be calculated using the following formula:

[0050] △S2=S-S2=S-2π(R+L)θ / 360=S-S1-2π*L*θ / 360

[0051] L=(S-S1-△S2)360 / (2π*θ)

[0052] Wherein, △S2 is the compression amount of the flexible display panel corresponding to the arc length of the second concave portion 310, S is the arc length of the flexible display panel used to fit the corner portion 300, S2 is the arc length of the second concave portion 310, S1 is the arc length of the corner portion 300, R is the radius of the corner portion 300, and θ is the angle of the central angle corresponding to the second concave portion 310.

[0053] In these optional embodiments, S is the arc length of the flexible display panel at the corner 300, S2 is the arc length of the corner 300, the flexible display panel is compressed by the corner 300 when it is attached to the lens, and the difference between S and S2 is the amount of compression of the flexible display panel, i.e., ΔS2.

[0054] The arc length of the second concave portion 310 in the corner portion 300 can be calculated using the arc length formula, i.e., S2=2π(R+L)θ / 360, where R is the radius of the corner portion 300, which is the original radius of the corner portion 300 before the second concave portion 310 is provided, S1 is the arc length of the corner portion 300, which can be obtained from the arc length formula as S1=2πRθ / 360, and L is the radius increment of a segment of the second concave portion 310 relative to the corner portion 300. The sum of the radius of the corner portion 300 and the radius increment of the second concave portion 310 relative to the corner portion 300 is the radius of the second concave portion 310. The radius increment L of at least one segment of the second recessed portion 310 relative to the corner portion 300 can be calculated using the above formula. According to the experiment, when △S2 < 0.2mm, the flexible display panel has no abnormal wrinkles at the corner portion 300. Therefore, the design size of the second recessed portion 310 can be determined according to the above calculation formula, thereby avoiding the impact of wrinkles on the display effect of the flexible display panel.

[0055] Optionally, when the second recess 310 comprises multiple segments, the radius increment L of the second recess 310 relative to the corner portion 300 can be calculated using the following formula:

[0056] △S2=S-S2=S-2π*(R1+L1)*θ1 / 360-2π*(R2+L2)*θ2 / 360-…-2π*(R N +L N )*θ N / 360

[0057] =S-S1-2π*L1*θ1 / 360-2π*L2*θ2 / 360-…-2π*L N *θ N / 360

[0058] The corner portion 300 and the second concave portion 310 may include N segments. The arc length of the second concave portion 310 can be calculated using the arc length formula, i.e., S2=2π*(R1+L1)*θ1 / 360-2π*(R2+L2)*θ2 / 360-…-2π*(R N +L N )*θ N / 360. Where R... N L is the radius of the corner portion 300, which is the original radius of the corner portion 300 before the second recess 310 is provided. N θ is the radius increment of a segment of the second concave portion 310 relative to the corner portion 300. N Let be the degree measure of the central angle corresponding to a segment of the second recess 310. The radius of the second recess 310 is the sum of the radius of the corner portion 300 and the radius increment of the second recess 310 relative to the corner portion 300. The above formula can be used to calculate that the second recess 310 includes multiple segments with radius increments relative to the corner portion 300.

[0059] Optional, such as Figure 7 As shown, the angle between the radius corresponding to the corner portion 300 and the second recessed portion 310 and the extending direction of the planar portion 150 is α. The radius increment of the second recessed portion 310 can be calculated by measuring the thinning depth T of the second recessed portion 310 in a direction parallel to the planar portion 150. The calculation formula is as follows:

[0060] T=L*arcosα

[0061] Wherein, L is the radius increment of the second concave portion 310 relative to the corner portion 300, T is the thinning depth of the second concave portion 310 along the direction parallel to the planar portion 150, and α is the angle between the radius corresponding to the second concave portion 310 and the extension direction of the planar portion 150.

[0062] In these alternative embodiments, the radius increment of the second recess 310 relative to the corner 300 can be calculated by measuring the thinning depth of the second recess 310 in a direction parallel to the plane portion 150, and the angle between the radius of the second recess 310 or the corner portion 300 and the plane portion 150, which facilitates the dimensional design of the second recess 310.

[0063] The second aspect of this application provides a display module including the lens in any of the embodiments of the first aspect. The display module includes a flexible display panel, and a lens body 100 is attached to one side of the flexible display panel. The lens body 100 is provided with a first recess 210 and a second recess 310 facing the side of the flexible display panel.

[0064] In the embodiments provided in this application, the display module includes a lens, which includes a main body 500, a curved portion 200, and a corner portion 300. The curved portion 200 and the corner portion 300 are sequentially distributed in a direction away from the center of the main body 500. The curved portion 200 is located at the edge of the main body 500 on the side away from the center of the main body 500, and the corner portion 300 is located at the edge of the curved portion 200 on the side away from the center of the main body 500. That is, the main body 500, the curved portion 200, and the corner portion 300 are connected in sequence. The lens body 100 includes two adjacent side edges 120 and a bent edge 130 connecting the two side edges 120. A bent portion 200 and a corner portion 300 are disposed on the side of the bent edge 130 facing the main body 500. The side of the bent edge 130 facing the main body 500 consists of a corner portion 300 and a bent portion 200 in sequence. A first concave portion 210 is provided on the side of the bent portion 200 facing the first mating surface 110, and a second concave portion 310 is provided on the side of the corner portion 300 facing the first mating surface 110.

[0065] When the flexible display panel is bonded to the first bonding surface 110, it conforms to the shape of the first bonding surface 110. When the first bonding surface 110 is bonded to the flexible display panel at the curved portion 200 and the corner portion 300, the surface area of ​​the curved portion 200 and the corner portion 300 on the first bonding surface 110 is smaller than the surface area of ​​the flexible display panel at these locations. During bonding, the flexible display panel is compressed by the curved portion 200 and the corner portion 300, resulting in compression wrinkles. A first recessed portion 210 is provided on the side of the curved portion 200 facing the first bonding surface 110 to increase the surface area of ​​the curved portion 200 on that side, thereby reducing the compression of the flexible display panel. A second recessed portion 310 is provided on the side of the corner portion 300 facing the first bonding surface 110 to increase the surface area of ​​the corner portion 300 on the side of the first bonding surface 110, thereby reducing the compression of the flexible display panel and solving the problem that the flexible display panel in the display module is prone to wrinkles at the corner portion 300 and the curved portion 200.

[0066] In some alternative embodiments, such as Figure 5 As shown, the display module also includes a cover plate 400, which includes a light-shielding layer 410. The orthographic projection of the second recess 310 on the cover plate 400 is located within the light-shielding layer 410. The material of the light-shielding layer 410 includes ink.

[0067] In these alternative embodiments, the lens is located between the flexible display panel and the cover plate 400. The cover plate 400 is provided with a light-shielding layer 410 on the side facing the lens body 100. The light emitted by the light-emitting unit of the flexible display panel cannot pass through the light-shielding layer 410. The orthographic projection of the second recess 310 on the cover plate 400 is located inside the light-shielding layer 410. The light emitted by the light-emitting unit of the flexible display panel passes through the second recess 310 and is emitted onto the light-shielding layer 410 and absorbed by the light-shielding layer 410. Because the second recess 310 increases the inner surface area of ​​the first bonding surface 110, the second recess 310 reduces the lens thickness of the corner portion 300. The light emitted from the light-emitting unit from the second recess 310 will have diffraction and refraction problems, thus affecting the display effect. By placing the orthographic projection of the second recess 310 on the cover plate 400 within the light-shielding layer 410, the light emitted by the light-emitting unit of the flexible display panel passes through the second recess 310 and is absorbed by the light-shielding layer 410, thereby avoiding the diffraction and refraction phenomena of the light emitted from the light-emitting unit from the second recess 310 from affecting the display effect.

[0068] A third aspect of this application provides a display device, including the display module in any of the embodiments of the second aspect described above.

[0069] In the embodiments provided in this application, the display device includes a display module, the display module includes a lens, the lens includes a main body portion 500, a curved portion 200 and a corner portion 300, the curved portion 200 and the corner portion 300 are distributed sequentially in a direction away from the center of the main body portion 500, the curved portion 200 is provided with a first concave portion 210, and the corner portion 300 is provided with a second concave portion 310.

[0070] A first recessed portion 210 is provided on the side of the curved portion 200 facing the first mating surface 110 to increase the surface area of ​​the curved portion 200, thereby reducing the compression of the flexible display panel. A second recessed portion 310 is provided on the corner portion 300 to increase the surface area of ​​the corner portion 300, thereby reducing the compression of the flexible display panel. This solves the problem that the flexible display panel in the display module is prone to wrinkles at the corner portion 300 and the curved portion 200, and improves the display effect of the display device.

[0071] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lens, characterized in that, include: The lens body has a first bonding surface for bonding to a flexible display panel, the lens body including a main body and curved portions and corner portions distributed sequentially in a direction away from the center of the main body; The lens body includes two adjacent sides and a bent edge connecting the two sides. The bent portion and the corner portion are located on the side of the bent edge facing the main body. The bent portion has a first concave portion on the side facing the first mating surface, and the corner portion has a second concave portion on the side facing the first mating surface. The main body has a planar portion for supporting the flexible display panel. The second concave portion is arc-shaped along an extension direction parallel to the planar portion. At least one segment of the arc of the second concave portion has a radius increment L relative to the corner portion, which can be calculated using the following formula: △S2=S-S2=S-2π(R+L)θ / 360=S-S1-2π*L*θ / 360 L=(S-S1-△S2)360 / (2π*θ) Wherein, △S2 is the compression amount of the flexible display panel corresponding to the arc length in the second concave part, S is the arc length of the flexible display panel used to fit the corner part, S2 is the arc length of the second concave part, S1 is the arc length of the corner part, R is the radius of the corner part, and θ is the angle of the central angle corresponding to the second concave part.

2. The lens according to claim 1, characterized in that, The lens body has a second bonding surface on the side opposite to the first bonding surface. The second bonding surface is used to bond the cover plate. The cover plate has a light-shielding layer on the side facing the lens body. The second bonding surface has a light-shielding area for bonding with the light-shielding layer. The orthographic projection of the second concave portion on the cover plate is located within the light-shielding area.

3. The lens according to claim 1, characterized in that, The first recess and / or the second recess is part of a sphere.

4. The lens according to claim 1, characterized in that, The arc shape includes two or more segments along the extension direction parallel to the plane, and the radii of the two or more segments of the arc shape are different.

5. The lens according to claim 4, characterized in that, Along the extension direction parallel to the planar portion, the arc shape includes three segments, including a middle segment and two edge segments disposed on both sides of the middle segment, wherein the radius of the middle segment is greater than the radius of the edge segments.

6. A display module, characterized in that, The display module includes the lens according to any one of claims 1-5, the flexible display panel is attached to one side of the flexible display panel, and the lens body is provided with a first recess and a second recess on the side of the flexible display panel facing the lens body.

7. The display module according to claim 6, characterized in that, The display module further includes a cover plate, which includes a light-shielding layer. The orthographic projection of the second recessed portion on the cover plate is located within the light-shielding layer. The material of the light-shielding layer includes ink.

8. A display device, characterized in that, Includes the display module as described in claim 7.

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