A curved surface display module and a display device

Abstract

The present invention discloses a curved display module and a display device. The curved display module has a non-bent display area and a bent display area, as well as a flexible display layer and a support plate. A first bent portion, a second bent portion and a third bent portion are provided at the bent portion of the flexible display layer, so that the support plate is attached to at least part of the non-bent portion and the first bent portion, thereby enabling the support plate to provide a supporting effect for the non-bent portion of the flexible display layer and preventing the non-bent portion of the flexible display layer from bending and deforming; and a non-bent portion. By making the thickness of the support plate on the side of the first bent portion close to the second bent portion smaller than the thickness of at least part of the support plate attached to the non-bent portion, there is a support plate with a smaller thickness on the inner side of the bent display area, reducing the stress generated due to a larger thickness or a sudden change in thickness of the support plate on the inner side of the bent display area, which is beneficial to improving the yield and service life of the curved display module.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to a curved display module and a display device. Background Art

[0002] With the development of display technologies, devices with display functions present diversified forms, and curved display devices with excellent visual effects functions emerge as the times require. The curved display device can be a four-curved display device, a double-curved display device, a single-curved display device, etc.; among them, on the basis of the original flat display, the four-curved display device adds a curved display at the edge, so as to have a higher screen-to-body ratio.

[0003] The curved display device usually includes a flexible display layer. The flexible display layer in the flat display area needs to be supported by a support plate so that the flexible display layer in the flat display area is in a non-bent state, while the flexible display layer in the curved display area needs to be in a bent state. However, when the flexible display layer is bent, since there is a support plate with a certain thickness at the junction of the curved display area and the flat display area, the laminated structure of the support plate and the flexible display layer is relatively thick, and the thickness of the support plate changes suddenly at this position, resulting in a stress concentration problem at this junction. Therefore, device damage, circuit breakage, etc. are likely to occur in the flexible display layer at this position. Summary of the Invention

[0004] The present invention provides a curved display module and a display device to solve the defects existing in the prior art, improve the stress concentration problem, and improve the yield and service life of the curved display module.

[0005] In a first aspect, the present invention provides a curved display module, including: a non-bent display area and a bent display area;

[0006] The curved display module further includes: a flexible display layer and a support plate;

[0007] The flexible display layer includes a bent portion and a non-bent portion; at least part of the bent portion is located in the bent display area, and at least part of the non-bent portion is located in the non-bent display area; the bent portion includes a first bent portion, a second bent portion and a third bent portion, the first bent portion is opposite to the second bent portion, and the first bent portion is connected to the second bent portion through the third bent portion;

[0008] The support plate is attached to at least part of the non-bent portion and the first bent portion;

[0009] The thickness of the support plate on the side of the first bent portion close to the second bent portion is less than the thickness of at least part of the support plate attached to the non-bent portion.

[0010] In a second aspect, the present invention provides a display device, comprising: the curved display module described in the first aspect of the present invention.

[0011] According to the technical solution of the present invention, by making the support plate fit with at least part of the non-bending part and the first bending part of the bending part, the support plate can provide a supporting effect for the non-bending part of the flexible display layer, preventing the non-bending part of the flexible display layer from bending and deforming and affecting normal display, and providing a supporting effect for the first bending part to prevent the bending display area from deforming due to external impact; at the same time, the thickness of the support plate on the side of the first bending part close to the second bending part is smaller than the thickness of at least part of the support plate that fits with the non-bending part, so that the support plate with a smaller thickness is provided inside the bending display area, reducing the stress caused by a larger thickness or a sudden change in thickness, which is beneficial to improving the yield rate and service life of the curved display module.

[0012] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of a curved display module in the prior art;

[0015] Figure 2 It is a schematic structural diagram of a curved display module provided by an embodiment of the present invention;

[0016] Figure 3 It is a top view of a curved display module provided by an embodiment of the present invention;

[0017] Figure 4 It is a schematic structural diagram of another curved display module provided by an embodiment of the present invention;

[0018] Figure 5 It is a schematic structural diagram of yet another curved display module provided by an embodiment of the present invention;

[0019] Figure 6 It is a schematic structural diagram of still another curved display module provided by an embodiment of the present invention;

[0020] Figure 7 It is a schematic structural diagram of a curved display module provided by an embodiment of the present invention;

[0021] Figure 8 Schematic structural diagram of another curved display module provided by an embodiment of the present invention;

[0022] Figure 9 Schematic structural diagram of yet another curved display module provided by an embodiment of the present invention;

[0023] Figure 10 Schematic structural diagram of still another curved display module provided by an embodiment of the present invention;

[0024] Figure 11 Schematic structural diagram of a curved display module provided by an embodiment of the present invention;

[0025] Figure 12 Schematic structural diagram of another curved display module provided by an embodiment of the present invention;

[0026] Figure 13 Schematic structural diagram of yet another curved display module provided by an embodiment of the present invention;

[0027] Figure 14 Schematic structural diagram of still another curved display module provided by an embodiment of the present invention;

[0028] Figure 15 Schematic structural diagram of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] Figure 1 Schematic structural diagram of a curved display module in the prior art, as Figure 1 shown, the curved display module 001 includes a flexible display layer 01 and a support layer 02. The flexible display layer 01 has the characteristics of being flexible and bendable. The support layer 02 is disposed on the back of the flexible display layer 02 to support the flexible display layer 01 and prevent the flexible display layer 01 at the area where no bending deformation is required from deforming.

[0031] Generally, for realizing curved surface display, narrow bezel, or double-sided display, etc., a part of the flexible display layer 01 is bent towards the back of another part of the flexible display layer 01 with a certain bending radius, so that the flexible display layer 01 includes a non-bent part and a bent part; a support layer 02 is provided on the back of the non-bent part, while the support layer 02 is not provided on the back of the bent part, resulting in a sudden change in the thickness of the support layer 02 at the junction positions A1 and A2 between the bent part and the non-bent part, so that the stress received at the junction positions A1 and A2 is relatively large, and the relatively large stress will cause damage such as fracture of the flexible display layer, thereby affecting the yield and display effect of the display module.

[0032] To solve the above problems, an embodiment of the present invention provides a curved surface display module, including: a non-bent display area and a bent display area; the curved surface display module further includes a flexible display layer and a support plate; the flexible display layer includes a bent part and a non-bent part; at least part of the bent part is located in the bent display area, and at least part of the non-bent part is located in the non-bent display area; the bent part includes a first bent part, a second bent part, and a third bent part, the first bent part is opposite to the second bent part, and the first bent part is connected to the second bent part through the third bent part; the support plate is attached to at least part of the non-bent part and the first bent part; the thickness of the support plate on the side of the first bent part close to the second bent part is less than the thickness of at least part of the support plate attached to the non-bent part.

[0033] By adopting the above technical solution, by attaching the support plate to at least part of the non-bent part and the first bent part of the bent part, the support plate can provide a supporting effect for the non-bent part of the flexible display layer, preventing the non-bent part of the flexible display layer from bending and deforming and affecting normal display, and providing a supporting effect for the first bent part to prevent the bent display area from deforming due to external impact; at the same time, the thickness of the support plate on the side of the first bent part close to the second bent part is less than the thickness of at least part of the support plate attached to the non-bent part, so that the support plate with a smaller thickness is provided inside the bent display area, reducing the stress generated due to a larger thickness or a sudden change in thickness, which is beneficial to improving the yield and service life of the curved surface display module.

[0034] The above is the core idea of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] Figure 2 It is a schematic structural diagram of a curved surface display module provided by an embodiment of the present invention. Figure 3 It is a top view of a curved surface display module provided by an embodiment of the present invention. With reference to Figure 2 and Figure 3, the curved display module 100 provided by the embodiment of the present invention includes a non-bending display area 1 and a bending display area 2. Both the non-bending display area 1 and the bending display area 2 can present corresponding display pictures, meeting the display requirements of a high screen-to-body ratio.

[0036] Among them, the display surface of the non-bending display area 1 can be a flat surface, while the display surface of the bending display area 2 can be a curved surface, so that the non-bending display area 1 and the bending display area 2 are connected to each other. In this way, the non-bending display area 1 and the bending display area 2 can smoothly display different contents of the same picture.

[0037] It can be understood that in the embodiment of the present invention, the bending display area 2 can partially surround the non-bending display area 1 or completely surround the non-bending display area 1. Figure 3 Only the situation where the bending display area 2 partially surrounds the non-bending display area 1 is shown in the figure. For example, the bending display area 2 is located on opposite sides of the non-bending display area 1, so that the curved display module 100 can be used as a double-curved display module. In addition, for the situation where the bending display area 2 completely surrounds the non-bending display area 1, the bending display area 2 can be provided around the non-bending display area 1, so that the curved display module 100 can be used as a four-curved display module. The embodiment of the present invention does not specifically limit the surrounding situation of the bending display area 2 and the non-bending display area 1. For the convenience of description, the embodiment of the present invention takes the partial film layer structure schematic diagram of the curved display module as an example to exemplarily illustrate the technical solution of the embodiment of the present invention.

[0038] Continue to refer to Figure 2 , the curved display module 100 further includes a flexible display layer 10 and a support plate 20; the flexible display layer 10 includes a bending part 11 and a non-bending part 12; at least part of the bending part 11 is located in the bending display area 2, and at least part of the non-bending part 12 is located in the non-bending display area 2; the bending part 11 includes a first bending part 111, a second bending part 112 and a third bending part 113. The first bending part 111 is opposite to the second bending part 112, and the first bending part 111 is connected to the second bending part 112 through the third bending part 113; the support plate 20 is attached to at least part of the non-bending part 12 and the first bending part 111; the thickness of the support plate 20 on the side of the first bending part 111 close to the second bending part 112 is less than the thickness of at least part of the support plate 20 attached to the non-bending part 12.

[0039] Among them, the flexible display layer 10 may include a flexible substrate, a driving circuit and a light-emitting element located on one side of the flexible substrate, and the driving circuit is used to drive the light-emitting element to display and emit light. The flexible substrate may include flexible film layers such as polyethylene terephthalate (PET) film, polyethylene naphthalate (PEN) film, polyimide (PI) film, and ultra-thin glass film, so that the flexible display layer has special properties such as bending and curling; the light-emitting element may include one of organic light-emitting diodes (OLEDs), micro light-emitting diodes (micro-LEDs), and mini light-emitting diodes (mini-LEDs); the driving circuit may include devices such as thin-film transistors, so that the driving circuit can convert the corresponding data voltage signal into a current signal to drive the light-emitting element to emit light.

[0040] Specifically, due to the bendable and deformable characteristics of the flexible display layer 10, at least a part of the non-bending portion 12 of the flexible display layer 10 can be attached to the support plate 20, and the support plate 20 can provide a supporting effect for at least a part of the non-bending portion 12 of the flexible display layer 10, so that the non-bending portion 12 is in a non-bending state, preventing the non-bending portion 12 of the flexible display layer 10 from bending and deforming and affecting the display. Among them, the support plate 20 can be made of any material with a supporting function, that is, the support plate 20 can have relatively high rigidity. For example, the support plate 20 can include materials such as metal or hard organic substances. When the support plate 20 includes a metal material, the metal material includes but is not limited to stainless steel (SUS); when the support plate 20 includes a hard organic substance material, the hard organic substance material includes but is not limited to polyethylene terephthalate (PET).

[0041] In addition, continue to refer to Figure 2, the support plate 20 also abuts against the first bent portion 111, and this part of the support plate 20 can provide a supporting effect for the first bent portion 111 to prevent the first bent portion 111 from deforming due to external impact; since the first bent portion 111 is opposite to the second bent portion 112 and the first bent portion 111 is connected to the second bent portion 112 through the third bent portion 113, the first bent portion 111 is the area where the bent portion 11 meets the non-bent portion 12. By making the thickness b of the support plate 20 on the side of the first bent portion 111 close to the second bent portion 112 less than the thickness a of at least part of the support plate 20 that abuts against the non-bent portion 12, it is possible to improve the situation where the first bent portion 111 is subjected to greater stress due to the relatively large thickness of the support plate 20 that abuts against the first bent portion 111, resulting in damage to the flexible display layer 10. In addition, because the thickness b of the support plate 20 on the side of the first bent portion 111 close to the second bent portion 112 is less than the thickness a of at least part of the support plate 20 that abuts against the non-bent portion 12, a part of the thickness of the support plate 20 at the junction of the non-bent portion 12 and the first bent portion 111 is reduced. At the junction of the first bent portion 111 and the third bent portion 113, the sudden change in the thickness of the support plate 20 will be less than the thickness of at least part of the support plate 20 that abuts against the non-bent portion 12, thereby being able to improve the stress concentration problem caused by the sudden change in the thickness of the support plate 20, which is beneficial to improving the yield and service life of the curved display module 100 and is beneficial to improving the display effect of the curved display module 100.

[0042] In the embodiment of the present invention, by making the support plate abut against at least part of the non-bent portion and the first bent portion of the bent portion, the support plate can provide a supporting effect for the non-bent portion of the flexible display layer, preventing the non-bent portion of the flexible display layer from bending and deforming, affecting the display, and providing a supporting effect for the first bent portion to prevent the bent display area from deforming due to external impact; at the same time, the thickness of the support plate on the side of the first bent portion close to the second bent portion is less than the thickness of at least part of the support plate that abuts against the non-bent portion, so that the support plate on the inner side of the bent display area has a smaller thickness, reducing the stress caused by the relatively large thickness or sudden change in the thickness of the support plate on the inner side of the bent display area, which is beneficial to improving the yield and service life of the curved display module.

[0043] It can be understood that the support plate 20 abuts against at least part of the non-bent portion 12. At this time, the support plate 20 can abut against part of the non-bent portion 12. For example, Figure 2 as shown, the support plate 20 only abuts against the non-bent portion 12 adjacent to the first bent portion 111 and does not abut against the non-bent portion 12 adjacent to the second bent portion 112; or, the support plate 20 can also abut against all of the non-bent portion 12. On the premise of ensuring that the non-bent portion 12 is in a non-bent state, the embodiment of the present invention does not specifically limit the abutting situation between the support plate 20 and the non-bent portion 12.

[0044] Optional, Figure 4 A schematic diagram of the structure of another curved display module provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the non-bending portion 12 of the curved display module 100 includes a first non-bending portion 121 and a second non-bending portion 122; the first non-bending portion 121 is opposite to at least part of the second non-bending portion 122, and the first non-bending portion 121 is located on the side of the second non-bending portion 122 away from the light-emitting surface of the flexible display layer 10; the first non-bending portion 121 is connected to the first bending portion 111; the second non-bending portion 122 is connected to the second bending portion 112; the support plate 20 includes a first support plate 21 and a second support plate 22; the first support plate 21 is bonded to the first non-bending portion 121 and the first bending portion 111; the second support plate 22 is at least bonded to the second non-bending portion 122.

[0045] Specifically, the first support plate 21 of the support plate 20 is in contact with the first non-bending portion 121 and the first bending portion 111, and can support the first non-bending portion 121, prevent the first non-bending portion 121 from bending and deforming, and prevent external impact from causing deformation of the curved display area 2. The second support plate 22 in the support plate 20 is at least in contact with the second non-bending portion 122, so that it can support the second non-bending portion 122, prevent the second non-bending portion 122 from bending and deforming, and prevent external impact from causing deformation of the first non-bending portion 121 and the second non-bending portion 122, which affects the display of the curved display module 100, which is beneficial to improving the yield and service life of the curved display module.

[0046] The first support plate 21 and the second support plate 22 may be made of the same material, and may be made of stainless steel (SUS), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polycarbonate (PC), polyacrylate (PA), polyvinyl alcohol (PVA), acrylonitrile-butadiene-styrene (ABS) and other materials with high rigidity, which can maintain the stability of the curved display module 100 and avoid damage to the curved display module 100 during transportation. Alternatively, the first support plate 21 and the second support plate 22 may be made of different materials, which is not specifically limited in the embodiment of the present invention.

[0047] It can be understood that, in the embodiment of the present invention, the second support plate 22 is at least in contact with the second non-bending portion 122, that is, the second support plate 22 can only be in contact with the second non-bending portion 122, or, in addition to being in contact with the second non-bending portion 122, the second support plate 22 can also be in contact with other parts of the flexible display layer 10. The arrangement of the second support plate 22 can be designed according to actual needs, and the embodiment of the present invention does not specifically limit this.

[0048] For example, Figure 5This is a schematic structural diagram of another curved display module provided by an embodiment of the present invention. As Figure 5 shown, the second support plate 22 can also be attached to the second bent portion 112, so as to support the second bent portion 112 and prevent the second bent portion 112 from deforming due to external impact, thereby improving the service life of the curved display module 100.

[0049] For ease of description, in the embodiments of the present invention, the case where the second support plate 22 is attached to both the second non-bent portion 122 and the second bent portion 112 at the same time is taken as an example to exemplarily illustrate the technical solutions of the embodiments of the present invention.

[0050] It should be noted that when the curved display module 100 is a single-sided curved display module, the side of the first non-bent portion 121 facing away from the second non-bent portion 122 is the non-bent display surface of the curved display module 100, or the side of the second non-bent portion 122 facing away from the first non-bent portion 121 is the non-bent display surface; and when the display module 100 is a double-sided curved display module, the side of the first non-bent portion 121 facing away from the second non-bent portion 122 and the side of the second non-bent portion 122 facing away from the first non-bent portion 121 are both non-bent display surfaces.

[0051] In an alternative embodiment, referring to Figure 2 、 4 any one of the drawings in FIGS. 5, when the curved display module 100 is a single-sided curved display module and the side of the second non-bent portion 122 facing away from the first non-bent portion 121 is the non-bent display surface, the curved display module 100 may further include a buffer and heat dissipation composite layer 40, a functional layer 50, and a cover plate 60. The buffer and heat dissipation composite film layer 40 can be located between the first support plate 21 and the second support plate 22 to buffer the stress acting on the flexible display layer 10 and dissipate the heat generated when the flexible display layer 10 works, playing a certain protective role for the curved display module 100 and avoiding damage to the curved display module 100 caused by foreign objects or external forces. The functional layer 50 can include an optical adhesive layer, a polarizing layer, a touch layer, etc. The functional layer 50 is located between the cover plate 60 and the second non-bent portion 122. When the functional layer 50 includes a touch layer, the presence of this functional layer enables the curved display module 100 to achieve a touch function; and when the functional layer 50 includes an optical adhesive layer and / or a polarizing layer, the functional layer 50 can have a high light transmittance, good water resistance, and good mechanical strength, etc., to protect the flexible display layer 10 and eliminate glare, improving the visual effect. The cover plate 60 is disposed on the side of the functional layer 50 away from the flexible display layer 10, so as to prevent the components in the flexible display layer 10 in the curved display module 100 from being damaged by impact and providing a protective effect for the curved display module 100.

[0052] In other alternative embodiments, when the curved display module 100 is a curved display module with dual-sided display, the above-mentioned functional layer 50 and cover plate 60 can also be disposed on the side of the first non-bending portion 121 away from the second non-bending portion 122. On the premise of being able to achieve the inventive points of the embodiments of the present invention, the embodiments of the present invention do not specifically limit the setting manner of the functional layer 50 and the cover plate 60. For ease of description, the embodiments of the present invention will be exemplarily described by taking the case where the functional layer 50 and the cover plate 60 are only disposed on the side of the second non-bending portion 122 away from the first non-bending portion 121 as an example.

[0053] In an alternative embodiment, with continued reference to Figure 5 , in the curved display module 100, the first support plate 21 is located on the side of the first non-bending portion 121 close to the second non-bending portion 122; the second support plate 22 is located on the side of the second non-bending portion 122 close to the first non-bending portion 121; the thickness of at least a part of the first support plate 21 that fits with the first bending portion 111 is smaller than the thickness of the first support plate 21 that fits with the first non-bending portion 121. Thus, by reducing the thickness of the first support plate 21 that fits with the first bending portion 111, when the curved display module 21 is bent, the problem of large stress caused by a large change in the thickness of the internal support plate is improved, which is beneficial to improving the yield rate and service life of the curved display module.

[0054] Optionally, Figure 6 is a schematic structural diagram of another curved display module provided by the embodiments of the present invention. As Figure 6 shown, the thickness of at least a part of the second support plate 22 that fits with the second bending portion 112 is smaller than the thickness of the second support plate 22 that fits with the second non-bending portion 122. Thus, by reducing the thickness of the second support plate 22 that fits with the second bending portion 112, the stress generated due to the sudden change in the thickness of the second support plate 22 during the bending of the curved display module 100 can be reduced, which is beneficial to improving the yield rate and service life of the curved display module 100.

[0055] Optionally, Figure 7 is a schematic structural diagram of a curved display module provided by the embodiments of the present invention. As Figure 7 shown, in the curved display module 100, along the direction from the first bending portion 111 to the third bending portion 113, the thickness of at least a part of the first support plate 21 that fits with the first bending portion 111 gradually decreases.

[0056] Specifically, in the direction from the first bending portion 111 towards the third bending portion 113, the thickness of at least a part of the first support plate 21 that fits with the first bending portion 111 gradually decreases. That is, in the direction from the first bending portion 111 towards the third bending portion 113, the surface on the side of at least a part of the first support plate 21 that fits with the first bending portion 111 and faces away from the first bending portion 111 can be a descending slope. In this way, by making the thickness of the first support plate 21 change gradually, the stress generated by the presence of the first support plate 21 when the curved display module 100 is bent can be dispersed, achieving a smooth transition effect, improving the problem of stress concentration, and further increasing the yield rate and service life of the curved display module 100.

[0057] It can be understood that when, in the direction from the first bending portion 111 towards the third bending portion 113, the surface on the side of at least a part of the first support plate 21 that fits with the first bending portion 111 and faces away from the first bending portion 111 can be a descending slope, the starting position of the slope can be located at the position where the first support plate 21 fits with the first non-bending portion 121, or can also be located at the position where the first support plate 21 fits with the first bending portion 111; similarly, the ending position of the slope can be located at the position where the first support plate 21 fits with the first bending portion 111, or can also be located at the position where the first support plate 21 fits with the third bending portion 113; in the embodiment of the present invention, the starting position and the ending position of the slope can be set according to the required steepness of the slope to be presented. In an exemplary embodiment, the starting position of the slope can be located at the position where the first support plate 21 fits with the first non-bending portion 121, and the ending position of the slope is located at the position where the first support plate 21 fits with the third bending portion 113, so that the slope has sufficient length and can descend slowly, thereby enabling the stress to be sufficiently dispersed.

[0058] Optionally, continue to refer to Figure 7 , when the thickness of at least a part of the second support plate 22 that fits with the second bending portion 112 is less than the thickness of the second support plate 22 that fits with the second non-bending portion 122, in the direction from the second non-bending portion 112 towards the third bending portion 113, the thickness of at least a part of the second support plate that fits with the second bending portion gradually decreases.

[0059] Specifically, in the direction from the second bending portion 112 towards the third bending portion 113, the thickness of at least a part of the second support plate 22 that fits the second bending portion 112 gradually decreases. That is, in the direction from the second bending portion 112 towards the third bending portion 113, the surface on the side of at least a part of the second support plate 22 that fits the second bending portion 112 and faces away from the second bending portion 112 can be a descending slope. In this way, by making the thickness of the second support plate 22 gradually change, the stress generated by the presence of the second support plate 22 when the curved display module 100 is bent can be dispersed, achieving a smooth transition effect, improving the problem of stress concentration, and further increasing the yield and service life of the curved display module 100.

[0060] Similarly, it can be understood that when, in the direction from the second bending portion 112 towards the third bending portion 113, the surface on the side of at least a part of the second support plate 22 that fits the second bending portion 112 and faces away from the second bending portion 112 can be a descending slope, the starting position of the slope can be located at the position where the second support plate 22 fits the second non-bending portion 122, or can also be located at the position where the second support plate 22 fits the second bending portion 112; similarly, the ending position of the slope can be located at the position where the second support plate 22 fits the second bending portion 112, or can also be located at the position where the second support plate 22 fits the third bending portion 113; in the embodiment of the present invention, the starting position and the ending position of the slope can be set according to the required steepness of the presented slope. In an exemplary embodiment, the starting position of the slope can be located at the position where the second support plate 22 fits the second non-bending portion 122, and the ending position of the slope is located at the position where the second support plate 22 fits the third bending portion 113, so that the slope has sufficient length and the slope can descend slowly, thereby enabling the stress to be sufficiently dispersed.

[0061] It should be noted that Figure 7 only the exemplary drawings of the embodiments of the present invention Figure 7 only show the case where the first support plate 21 and the second support plate 22 present a slope shape when their thicknesses gradually decrease. However, in the embodiments of the present invention, when the thicknesses of the first support plate 21 and the second support plate 22 gradually decrease, they can also be of other shapes.

[0062] Optionally, Figure 8 is a schematic structural diagram of another curved display module provided by the embodiment of the present invention, as Figure 8As shown, the direction in which the first bending portion 111 points to the third bending portion 113, the support plate 20 includes a plurality of first steps 210, and the height of the first step 210 close to the first non-bending portion 121 is greater than the height of the first step 210 away from the first non-bending portion 121. In this way, by gradually reducing the thickness of the first support plate 21 in the form of steps, the stress generated by the sudden change in the thickness of the first support plate 21 when the curved display module 100 is bent can also be dispersed at each first step 210, achieving a smooth transition effect, which is beneficial to improving the yield and service life of the curved display module 100.

[0063] Optionally, continue to refer to Figure 8 , in the direction in which the second bending portion 112 points to the third bending portion 113, the support plate 20 includes a plurality of second steps 220, and the height of the second step close to the second non-bending portion 122 is greater than the height of the second step 220 away from the second non-bending portion 122. In this way, by gradually reducing the thickness of the second support plate 22 in the form of steps, the stress generated by the sudden change in the thickness of the second support plate 22 when the curved display module 100 is bent can also be dispersed at each second step 220, achieving a smooth transition effect, which is beneficial to improving the yield and service life of the curved display module 100.

[0064] It can be understood that the first steps 210 of the first support plate 21 and the second steps 220 of the second support plate 22 can be obtained by an etching preparation process, that is, different degrees of etching are performed on the first support plate 21 in the direction in which the first bending portion 111 points to the third bending portion 113, and different degrees of etching are performed on the second support plate 22 in the direction in which the second bending portion 112 points to the third bending portion 113, and the first steps 210 and the second steps 220 can be formed. Alternatively, the first steps 210 and the second steps 220 can also be obtained by other preparation processes, and the embodiments of the present invention do not make specific limitations on this.

[0065] In an optional embodiment, referring to Figure 4-8 any one of the drawings, the curved display module 100 may further include a flexible protective layer 30; the flexible protective layer 30 includes a first protective portion 31, a second protective portion 32 and a third protective portion 33; the first protective portion 31 is connected to the second protective portion 32 through the third protective portion 33; in the thickness direction of the flexible display layer 10, the first protective portion 31 at least covers the first bending portion 111, the second protective portion 32 at least covers the second bending portion 112, and the third protective portion 33 at least covers the third bending portion 113. At this time, the first protective portion 31 is located on the side of the first bending portion 111 away from the first support plate 21, and the second protective portion 32 is located on the side of the second bending portion 112 away from the second support plate 22.

[0066] Among them, the flexible protective layer 30 has a certain elastic deformation ability. When the flexible display layer 10 of the curved surface display module 100 is bent, it can reduce the bending difficulty of the flexible display layer 10 and reduce the bending stress suffered by the flexible display layer 10 during bending, so as to prevent cracks and the like from occurring in the flexible display layer 10. In this way, in the thickness direction of the flexible display layer 10, the first protection part 31 at least covers the first bending part 111, the second protection part 32 at least covers the second bending part 112, and the third protection part 33 at least covers the third bending part 113, so that the first protection part 31, the second protection part 32 and the third protection part 33 can respectively form a protective effect on the first bending part 111, the second bending part 112 and the third protection part 33.

[0067] It should be noted that the above is only an exemplary description of the case where the flexible protective layer 30 covers the bending part 11. In the embodiment of the present invention, the flexible protective layer 30 may also cover a part of the non-bending part 12, so that the flexible protective layer 30 can also play a certain protective role on the non-bending part 12.

[0068] It can be understood that the above is only an exemplary description taking the first support plate 21 and the second support plate 22 both being located between the first non-bending part 121 and the second non-bending part 122 as an example. In the embodiment of the present invention, the first support plate 21 and / or the second support plate 22 may not be located between the first non-bending part 121 and the second non-bending part 122.

[0069] Optionally, Figure 9 is a schematic structural diagram of another curved surface display module provided by the embodiment of the present invention, as Figure 9 shown, the first support plate 21 of the curved surface display module 100 is located on the side of the first non-bending part 121 facing away from the second non-bending part 122; at this time, the thickness of the support plate 20 on the side of the second bending part 112 close to the first bending part 111 is 0 micrometers; the second support plate 22 is located on the side of the second non-bending part 122 close to the first non-bending part 121.

[0070] As Figure 1 shown, in the prior art, when the first support plate 021 is attached to the first non-bending part 121' and the first bending part 111', when the curved surface display module 001 is bent, the tension direction F1' of the first bending part 111' faces the side of the first bending part 111' facing away from the second bending part 112', and the tension direction F2' of the first support plate 021 faces the side of the first support plate 021 facing the first bending part 111'. Under the reverse action of the two tensions, the film layer separation phenomenon is likely to occur in the first bending part 111', affecting the service life of the curved surface display module 100.

[0071] In this embodiment, the thickness of the support plate 20 on the side of the second bending portion 112 close to the first bending portion 111 is set to 0 microns, and the first support plate 21 is located on the side of the first non-bending portion 121 away from the second non-bending portion 122. When the curved display module 100 is bent, the first bending portion 111 is subjected to a tension F1 in the direction towards the side of the first bending portion 111 away from the second bending portion 112, and the first support plate 21 attached to the first bending portion 111 is subjected to a tension F2 on the side of the first support plate 21 towards the first bending portion 111, so that the interaction point of the tensions F1 and F2 is concentrated between the first bending portion 111 and the first support plate 21, avoiding the film layer separation of the first bending portion 111 caused by the concentration of bending tension.

[0072] In an alternative embodiment, when the curved display module 100 is a single-sided display curved display module, the side of the second non-bending portion 122 away from the first non-bending portion 121 is a non-bending display surface, and the second support plate 22 is located on the side of the second non-bending portion 122 close to the first non-bending portion 121, so that the light emitted by the flexible display layer 10 is not blocked by the second support plate 22, meeting the normal light-emitting requirements of the curved display module 100, ensuring both the display light-emitting requirements of the flexible display layer 10 and reducing the damage to the flexible display layer 10 caused by the stress generated during bending.

[0073] Optionally, Figure 10 is a schematic structural diagram of another curved display module provided by an embodiment of the present invention. As Figure 10 shown, when the curved display module 100 further includes a flexible protection layer 30, the flexible protection layer 30 includes a first protection portion 31, a second protection portion 32, and a third protection portion 33. The first protection portion 31 is connected to the second protection portion 32 through the third protection portion 33, and in the thickness direction of the flexible display layer 10, the first protection portion 31 at least covers the first bending portion 111, the second protection portion 32 at least covers the second bending portion 112, and the third protection portion 33 at least covers the third bending portion 113. The first protection portion 31 can be located between the first bending portion 111 and the first support plate 21, and the second protection portion 32 can be located on the side of the second bending portion 112 away from the second support plate 22. Thus, by disposing the first protection portion 31 between the first bending portion 111 and the first support plate 21, compared with Figure 1 the prior art shown, the stress generated during bending is transferred from the first bending portion 111 to the first protection portion 31, thereby reducing the stress received by the flexible display layer 10 and achieving the protection of the flexible protection layer 10.

[0074] Optionally, Figure 11 is a schematic structural diagram of a curved display module provided by an embodiment of the present invention. As Figure 11 shown, the thickness of at least a part of the second protection portion 32 of the curved display module 100 is greater than the thickness of the first protection portion 31.

[0075] Specifically, since the second support plate 22 is disposed inside the second non-bending portion 122 and the second bending portion 112, by making the thickness of at least a part of the second protection portion 32 greater than the thickness of the first protection portion 31, the second protection portion 32 can play a greater protective role on the flexible display layer 10, further improving the reliability of the curved display module 100.

[0076] In an alternative embodiment, the thickness difference between the second protection portion 32 and the first protection portion 31 in the flexible protection layer 30 is related to the manufacturing process of the flexible protection layer 30. The flexible protection layer 30 can be prepared by dispensing. The dispensing process is from one side of the flexible display layer 10 to the other side. Since the colloid has fluidity, there will be a thickness difference phenomenon between the first protection portion 31 and the second protection portion 32.

[0077] Optionally, continue to refer to Figure 11 , in the thickness direction of the flexible display layer 10, the first protection portion 31 also covers a part of the first non-bending portion 121; along the direction from the first bending portion 111 to the first non-bending portion 121, the thickness of at least a part of the first protection portion 31 covering the first non-bending portion 121 gradually decreases. In this way, when the flexible protection layer 30 is attached to the first support plate 21, a smooth transition can be achieved, preventing a large attachment gap from occurring between the first protection portion 31 and the first support plate 31, and making the structure of the curved display module 100 more compact.

[0078] Optionally, Figure 12 is a schematic structural diagram of another curved display module provided by an embodiment of the present invention. As Figure 12 shown, when the first support plate 21 is on the side of the first non-bending portion 121 and the first bending portion 111 away from the second non-bending portion 122, the thickness of at least a part of the first support plate 21 attached to the first bending portion 111 is less than the thickness of the first support plate 21 attached to the first non-bending portion 121. In this way, the bending stress on the film layer between the first bending portion 111 and the first support plate 21 can be reduced.

[0079] Correspondingly, the thickness of at least a part of the second support plate 22 attached to the second bending portion 112 will also be less than the thickness of the second support plate 22 attached to the second non-bending portion 122. In this way, the stress generated by the presence of the second support plate 22 when the curved display module 100 is bent is dispersed, achieving a smooth transition effect, improving the problem of stress concentration, and further improving the yield and service life of the curved display module 100.

[0080] Based on the above embodiments, Figure 13 is a schematic structural diagram of yet another curved display module provided by an embodiment of the present invention. As Figure 13As shown, along the direction from the first bending portion 111 to the third bending portion 113, the thickness of at least a part of the first support plate 21 attached to the first bending portion 111 gradually decreases. In this way, by making the thickness of the first support plate 21 change gradually, the stress generated by the presence of the first support plate 21 when the curved display module 100 is bent can be dispersed, achieving a smooth transition effect.

[0081] Correspondingly, the thickness of at least a part of the second support plate 22 attached to the second bending portion 112 is also smaller than the thickness of the second support plate 22 attached to the second non-bending portion 122. In this way, the stress generated by the presence of the second support plate 22 when the curved display module 100 is bent can be dispersed, achieving a smooth transition effect, improving the problem of stress concentration, and further improving the yield and service life of the curved display module 100.

[0082] It can be understood that Figure 13 only an exemplary description is given in which the thickness of the first support plate 21 decreases in a ramp-like gradual change. In the embodiments of the present invention, the form of the gradual change in the thickness of the first support plate 21 can also be stepped.

[0083] Exemplarily, Figure 14 is a schematic structural diagram of another curved display module provided by an embodiment of the present invention. As Figure 14 shown, along the direction from the first bending portion 111 to the third bending portion 113, the thickness of at least a part of the first support plate 21 attached to the first bending portion 111 gradually decreases in a stepped manner. In this way, the stress generated by the sudden change in the thickness of the first support plate 21 when the curved display module 100 is bent can also be dispersed at each step, achieving a smooth transition effect, and thus being beneficial to improving the yield and service life of the curved display module 100. Correspondingly, the thickness of at least a part of the second support plate 22 attached to the second bending portion 112 also gradually decreases in a stepped manner. In this way, the stress generated by the presence of the second support plate 22 when the curved display module 100 is bent can be dispersed, achieving a smooth transition effect, improving the problem of stress concentration, and further improving the yield and service life of the curved display module 100.

[0084] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes the curved display module provided by any embodiment of the present invention. Therefore, this display device has the technical features of the curved display module provided by the embodiments of the present invention and can achieve the beneficial effects of the curved display module provided by the embodiments of the present invention. The same parts can refer to the description of the curved display module provided by the embodiments of the present invention above and will not be repeated here.

[0085] Exemplarily, Figure 15 is a schematic structural diagram of a display device provided by an embodiment of the present invention. As Figure 15As shown, the display device 200 includes the curved display module 100 provided by the embodiments of the present invention. The display device 200 provided by the embodiments of the present invention can be any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiments of the present invention do not make special limitations in this regard.

[0086] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. There is no limitation herein.

[0087] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A curved surface display module, characterized in that, include: A non-bending display area and a bending display area; The curved display module further includes: a flexible display layer and a support plate; The flexible display layer includes a bending portion and a non-bending portion; at least part of the bending portion is located in the bending display area, and at least part of the non-bending portion is located in the non-bending display area; the bending portion includes a first bending portion, a second bending portion and a third bending portion, the first bending portion is opposite to the second bending portion, and the first bending portion is connected to the second bending portion through the third bending portion; The support plate is in contact with at least a portion of the non-bending portion and the first bending portion; The thickness of the support plate on the side of the first bending portion close to the second bending portion is smaller than the thickness of at least a portion of the support plate in contact with the non-bending portion; The non-bending portion includes a first non-bending portion and a second non-bending portion; The first non-bending portion is opposite to at least a portion of the second non-bending portion, and the first non-bending portion is located on a side of the second non-bending portion away from the light emitting surface of the flexible display layer; The first non-bending portion is connected to the first bending portion; the second non-bending portion is connected to the second bending portion; The support plate includes a first support plate and a second support plate; the first support plate is in contact with the first non-bending portion and the first bending portion; the second support plate is in contact with at least the second non-bending portion; Wherein, the first support plate is located on a side of the first non-bending portion away from the second non-bending portion; and the thickness of the support plate on the side of the second bending portion close to the first bending portion is 0 micrometers.

2. The curved surface display module according to claim 1, wherein The second supporting plate is located on a side of the second non-bending portion close to the first non-bending portion.

3. The curved display module according to claim 2, wherein, Also includes: Flexible protective layer; The flexible protective layer includes a first protective portion, a second protective portion and a third protective portion; the first protective portion is connected to the second protective portion through the third protective portion; In the thickness direction of the flexible display layer, the first protection portion at least covers the first bending portion, the second protection portion at least covers the second bending portion, and the third protection portion at least covers the third bending portion; The first protection portion is located between the first bending portion and the first supporting plate, and the second protection portion is located on a side of the second bending portion away from the second supporting plate.

4. The curved surface display module according to claim 3, wherein The thickness of at least a portion of the second protection portion is greater than the thickness of the first protection portion.

5. The curved display module according to claim 3, wherein In the thickness direction of the flexible display layer, the first protection portion also covers a portion of the first non-bending portion; Along the direction from the first bending portion to the first non-bending portion, the thickness of at least a portion of the first protection portion covering the first non-bending portion gradually decreases.

6. The curved display module according to claim 1, wherein Along the direction from the first bending portion to the third bending portion, the thickness of at least a portion of the first support plate in contact with the first bending portion gradually decreases.

7. The curved display module according to claim 6, wherein The first bending portion points in the direction of the third bending portion, the support plate includes a plurality of first steps, and the height of the first step close to the first non-bending portion is greater than the height of the first step away from the first non-bending portion.

8. The curved surface display module according to claim 1, wherein The second supporting plate is also in contact with the second bending portion.

9. The curved surface display module according to claim 8, wherein, The thickness of at least part of the second support plate that fits the second bending part is less than the thickness of the second support plate that fits the second non-bending part.

10. The curved surface display module according to claim 9, characterized in that, Along the direction from the second bending part to the third bending part, the thickness of at least part of the second support plate that fits the second bending part gradually decreases.

11. The curved display module according to claim 10, wherein Along the direction from the second bending part to the third bending part, the support plate includes a plurality of second steps, and the height of the second step close to the second non-bending part is greater than the height of the second step far from the second non-bending part.

12. A display device, characterized in that, Comprising: The curved surface display module according to any one of claims 1-11.

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