Display module and display device

Abstract

The present application discloses a display module and a display device, wherein the display module includes a display panel, a cover body, and a flexible connector. The display panel has a display area and a binding area located on one side of the display area. The cover body includes a cover plate and a limiting structure connected to each other. The cover plate is provided on one side of the display panel. The limiting structure is provided on a first surface of the cover plate facing the display panel, and the limiting structure protrudes from the first surface. The flexible connector includes a first connecting portion, a bending portion, and a second connecting portion. The first connecting portion is connected to the binding area of ​​the display panel. The second connecting portion is provided on a side of the display panel away from the cover plate. The bending portion is at least partially bent into an arc shape and connects the first connecting portion and the second connecting portion. The limiting structure is provided between the first surface and the first connecting portion. According to the embodiments provided in the present application, the display module and the display device provided in the present application reduce the cracking phenomenon of the flexible connector and improve the reliability of the display module and the display device.

Description

Technical Field

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

[0002] Display panels are widely used in electronic devices such as mobile phones and tablets. As display quality improves, people have increasingly higher requirements for screen-to-body ratio. The chip that controls the display panel can be placed on the backlight side of the display panel, and the display panel and chip can be connected by bending a flexible connector. In this way, the display area of ​​the display panel will occupy more area in the electronic device, achieving the purpose of increasing the screen-to-body ratio. Because the flexible connector has a certain elastic recovery force, the bent flexible connector has a rebound stress that restores it to a flat state. Under the action of the rebound stress, the connection between the flexible connector and the display panel is prone to cracking, resulting in the failure of the flexible connector to transmit signals. Summary of the Invention

[0003] The embodiments of the present application provide a display module and a display device, the purpose of which is to reduce cracking at the connection between the flexible connector and the display panel and improve the reliability of the display module.

[0004] An embodiment of the first aspect of the present application provides a display module, which includes a display panel, a cover body and a flexible connector, wherein the display panel has a display area and a binding area located on one side of the display area; the cover body includes a connected cover plate and a limiting structure, the cover plate is arranged on one side of the display panel, the limiting structure is arranged on the first surface of the cover plate facing the display panel, and the limiting structure protrudes from the first surface; the flexible connector includes a first connecting portion, a bending portion and a second connecting portion, the first connecting portion is connected to the binding area of ​​the display panel, the second connecting portion is arranged on the side of the display panel away from the cover plate, the bending portion is at least partially bent into an arc shape and connects the first connecting portion and the second connecting portion, and the limiting structure is arranged between the first surface and the first connecting portion.

[0005] According to an embodiment of the first aspect of the present application, the limiting structure includes an abutting surface for abutting the first connecting portion, and the maximum height from the abutting surface to the first surface is equal to the maximum spacing distance between the first connecting portion and the first surface.

[0006] According to any of the foregoing embodiments of the first aspect of the present application, the display panel includes a light-emitting device layer, the flexible connector includes a first flexible circuit board, and the first connecting portion of the first flexible circuit board is connected to the binding area of ​​the light-emitting device layer; the limiting structure includes a first limiting portion, and the first limiting portion is arranged between the first surface and the first connecting portion of the first flexible circuit board.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the first flexible circuit board is interconnected with the limiting structure on a side of the light-emitting device layer facing the cover plate.

[0008] According to any of the foregoing embodiments of the first aspect of the present application, the display panel also includes a touch layer, which is arranged on the side of the light-emitting device layer close to the cover body, and the flexible connector includes a second flexible circuit board, and the first connecting portion of the second flexible circuit board is connected to the touch layer; the limiting structure includes a second limiting portion, and the second limiting portion is arranged between the first surface and the first connecting portion of the second flexible circuit board.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the touch layer on the cover plate is spaced apart from or adjacent to the orthographic projection of the limiting structure on the cover plate.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the projection of the touch layer on the cover plate at least partially overlaps with the projection of the limiting structure on the cover plate.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, along the direction from the cover body to the display panel, the thickness of the first limiting portion is greater than the thickness of the second limiting portion.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the display module also includes an optical film layer and an optical adhesive layer, the optical film layer and the optical adhesive layer cover the display area, the optical film layer is arranged on the side of the touch layer close to the cover body, the optical adhesive layer is adhered to the cover body and the optical film layer, and along the thickness direction of the display module, the sum of the thickness of the second limiting portion and the second flexible circuit board is equal to the sum of the thickness of the optical film layer and the optical adhesive layer.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the optical adhesive layer includes a first bonding portion and a second bonding portion, the first bonding portion is located in the display area, the second bonding portion extends from the first bonding portion to the binding area, and at least part of the first connection portion of the second flexible circuit board is bonded to the cover body through the second bonding portion.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the display panel includes a light-emitting device layer and an encapsulation layer, the encapsulation layer is located on the side of the light-emitting device layer facing the touch layer, and along the thickness direction of the display module, the sum of the thickness of the first limiting portion and the first flexible circuit board is equal to the sum of the thickness of the optical film layer, the optical adhesive layer, the touch layer and the encapsulation layer.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the first limiting portion and the second limiting portion are connected along the first direction.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the first limiting portion and the second limiting portion are spaced apart along a first direction, and the first direction is perpendicular to the thickness direction of the display module.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the limiting structure and the cover plate are an integrated piece.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the surface of the limiting structure away from the cover body is a curved surface.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the limiting structure is an insulating strip attached to the cover plate.

[0020] An embodiment of the second aspect of the present application further provides a display device, comprising a display module according to any one of the above-mentioned embodiments of the first aspect.

[0021] In the display module and display device provided in the embodiments of the present application, the limiting structure protrudes from the first surface, and the limiting structure is arranged between the first surface of the cover body and the first connecting portion of the flexible connector. The limiting structure can limit the movement of the first connecting portion toward the cover plate, thereby avoiding cracks in the flexible connector 3 after bending due to its own elastic restoring force to a certain extent, thereby preventing abnormal display of the display module and improving the reliability of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0023] Figure 1 This is a schematic diagram of a partial cross-sectional structure of a display module provided by an embodiment of the first aspect of the present application;

[0024] Figure 2 is a schematic diagram of a partial cross-sectional structure of another display module provided by an embodiment of the first aspect of the present application;

[0025] Figure 3 is a schematic diagram of a partial cross-sectional structure of another display module provided by an embodiment of the first aspect of the present application;

[0026] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a cover provided by an embodiment of the first aspect of the present application;

[0027] Figure 5 1 is a schematic diagram of a partial cross-sectional structure of another cover provided by an embodiment of the first aspect of the present application;

[0028] Figure 6 It is a structural schematic diagram of the display device provided in the embodiment of the second aspect of the present application.

[0029] Description of reference numerals:

[0030] 10. Display module; 20. Display device; AA, display area; BB, binding area;

[0031] 1. Display panel; 11. Light-emitting device layer; 12. Touch control layer; 13. Optical film layer; 14. Optical adhesive layer; 15. Encapsulation layer; 16. Substrate layer; 17. Driver chip; 171. Display driver chip; 172. Touch control chip; 18. Spacer layer;

[0032] 2. Cover body; 21. Cover plate; 211. First surface; 22. Limiting structure; 221. First limiting portion; 221a. Abutting surface; 222. Second limiting portion;

[0033] 3. Flexible connector; 31. First flexible circuit board; 3a. First connecting portion; 3b. Bend portion; 3c. Second connecting portion; 32. Second flexible circuit board.

[0034] Specific implementation methods

[0035] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0037] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or region, it may mean that it is directly on the other layer or region, or that other layers or regions are included between it and the other layer or region. Furthermore, if the component is turned over, the layer or region will be "below" or "beneath" the other layer or region.

[0038] In the prior art, in order to increase the screen-to-body ratio, people have designed various implementation methods. Among them, the chip that controls the display panel can be set on the backlight side of the display panel, and the display panel and the chip can be connected by bending a flexible connector. In this way, the display area of ​​the display panel will occupy more area in the electronic device, achieving the purpose of increasing the screen-to-body ratio. However, since the flexible connector has a certain elastic recovery force, the bent flexible connector has a rebound stress that restores it to a flat state. Under the action of the rebound stress, cracks are easily formed at the connection between the flexible connector and the display panel, and water vapor will enter the display panel through the cracks, thereby causing the flexible connector to fail to transmit signals. The inventor found that after the flexible connector is connected to the display panel, a reinforcement structure such as glue can be applied to the connection between the flexible connector and the display panel to enhance the stability of the connection between the flexible connector and the display panel. However, it takes a certain amount of time for the reinforcement structure such as glue to solidify, and during this time period, the rebound stress can still cause cracks to form at the connection between the flexible connector and the display panel.

[0039] To solve the above problems, embodiments of the present application provide a display module 10 and a display device 20 . Embodiments of the display module 10 and the display device 20 will be described below with reference to the accompanying drawings.

[0040] The embodiment of the present application provides a display module 10 , which can reduce cracking of the flexible connector 3 and improve the reliability of the display module 10 .

[0041] See Figure 1 , Figure 1 It is a partial cross-sectional structural schematic diagram of a display module provided in an embodiment of the first aspect of the present application.

[0042] like Figure 1 As shown, the display module 10 provided by the embodiment of the first aspect of the present application includes a display panel 1, a cover body 2 and a flexible connector 3, the display panel 1 has a display area AA and a binding area BB located on one side of the display area AA; the cover body 2 includes a connected cover plate 21 and a limiting structure 22, the cover plate 21 is arranged on one side of the display panel 1, the limiting structure 22 is arranged on the first surface 211 of the cover plate 21 facing the display panel 1, and the limiting structure 22 protrudes from the first surface 211; the flexible connector 3 includes a first connecting portion 3a, a bending portion 3b and a second connecting portion 3c, the first connecting portion 3a is connected to the binding area BB of the display panel 1, the second connecting portion 3c is arranged on the side of the display panel 1 away from the cover plate 21, the bending portion 3b is at least partially bent into an arc shape and connects the first connecting portion 3a and the second connecting portion 3c, and the limiting structure 22 is arranged between the first surface 211 and the first connecting portion 3a.

[0043] The display area AA of the display panel 1 is used for displaying images, and the binding area BB of the display panel 1 is a non-display area. Along the thickness direction Y of the display panel 1, the side of the display panel 1 for display is the light-emitting side, and the side opposite to the light-emitting side is the backlight side. The cover body 2 is arranged on the light-emitting side of the display panel 1. Optionally, the display module 10 may also include one or more driver chips 17 for controlling the display panel 1, and the driver chip 17 is arranged on the backlight side. The first connection portion 3a of the flexible connector 3 is arranged in the binding area BB, and the display panel 1 and the driver chip 17 located on the backlight side are electrically connected by bending the flexible connector 3, so that the display area AA of the display panel 1 will occupy more display area on the display panel 1, thereby improving the screen-to-body ratio of the display panel 1.

[0044] The cover plate 21 can protect the display panel 1 and prevent the display panel 1 from being damaged by external collisions to a certain extent. The cover plate 21 covers the display area AA and the binding area BB. The limiting structure 22 can be made of a variety of materials, such as silicone, polyethylene terephthalate (PET) and other hard insulating materials with high rigidity and not easy to deform, so as to limit the movement of the first connection part 3a in the direction close to the cover plate 21, and to a certain extent prevent the first connection part 3a from separating from the display panel 1 due to its own elastic restoring force, or the first connection part 3a from cracking. It is easy for those skilled in the art to understand that the limiting structure 22 and the cover plate 21 can be made of the same material or different materials. When the limiting structure 22 and the cover plate 21 are made of the same material, an integrated structure can be formed by a hot pressing and cold pouring process; when the limiting structure 22 and the cover plate 21 are made of different materials, the cover plate 21 and the limiting structure 22 can be prepared in advance, and then the two can be bonded together. In such as Figure 1 In the illustrated embodiment, there is one retaining structure 22, but those skilled in the art will appreciate that the number of retaining structures 22 may be multiple, and the present application is not limited thereto. Those skilled in the art will appreciate that a reinforcement structure may also be provided on the first connecting portion 3a, connecting the first connecting portion 3a to any area of ​​the display panel 1 to improve the stability of the connection between the first connecting portion 3a and the display panel 1.

[0045] In the display module 10 provided in the embodiment of the present application, the limiting structure 22 protrudes from the first surface 211, and the limiting structure 22 is arranged between the first surface 211 of the cover body 2 and the first connection part 3a of the flexible connector 3. The limiting structure 22 can limit the movement of the first connection part 3a toward the direction close to the cover plate 21, and to a certain extent avoid cracks caused by the elastic restoring force of the flexible connector 3 after bending, thereby preventing abnormal display of the display module 10 and improving the reliability of the display module 10.

[0046] Please refer to Figure 2In some optional embodiments, the limiting structure 22 includes an abutting surface 221a for abutting the first connecting portion 3a. The maximum height d from the abutting surface 221a to the first surface 211 is equal to the maximum spacing distance between the first connecting portion 3a and the first surface 211, thereby ensuring that the first connecting portion 3a press-fitted with the display panel 1 will not bend toward the cover 2. Figure 2 , is a partial cross-sectional structural diagram of another display module provided in an embodiment of the first aspect of the present application.

[0047] In some optional embodiments, the display panel 1 includes a light-emitting device layer 11, the flexible connector 3 includes a first flexible circuit board 31, and the first connection portion 3a of the first flexible circuit board 31 is connected to the binding area BB of the light-emitting device layer 11; the limiting structure 22 includes a first limiting portion 221, and the first limiting portion 221 is arranged between the first surface 211 and the first connection portion 3a of the first flexible circuit board 31.

[0048] The light-emitting device layer 11 is an organic light-emitting diode (OLED) display layer. Optionally, a plurality of light-emitting devices are provided on the light-emitting device layer 11. The plurality of light-emitting devices may include three light-emitting layers, including red light-emitting devices, green light-emitting devices, and blue light-emitting devices. Of course, the light-emitting layer generally formed on the glass substrate of the OLED device is not limited to red light-emitting devices, green light-emitting devices, and blue light-emitting devices, but may also include white light-emitting devices or other color light-emitting devices. The first flexible circuit board 31 may be a chip-on-film, and each light-emitting device is connected to the display driver chip 171 via the first flexible circuit board 31, so that the display driver chip 171 drives each light-emitting device to emit light, thereby realizing the display area AA of the display panel 1 to display the image.

[0049] In the embodiment of the present application, by connecting the first connection portion 3a of the first flexible circuit board 31 to the light-emitting device layer 11 in the binding area BB, this arrangement can ensure that the first flexible circuit board 31 does not affect the normal display of the light-emitting device layer 11 located in the display area AA, thereby further improving the screen-to-body ratio; by arranging the first limiting portion 221 between the first surface 211 and the first connection portion 3a of the first flexible circuit board 31, the first limiting portion 221 can limit the bending of the first connection portion 3a of the first flexible circuit board 31 toward the direction close to the cover plate 21, thereby avoiding or reducing the occurrence of cracks in the first flexible circuit board 31 to a certain extent.

[0050] The first limiting portion 221 may be used only to abut the first connecting portion 3a of the first flexible circuit board 31. In some optional embodiments, the first flexible circuit board 31 may be connected to the limiting structure 22 on the side of the light-emitting device layer 11 facing the cover plate 21, so that the limiting structure 22 also supports the first flexible circuit board 31, thereby improving the relative position stability between the limiting structure 22 and the first flexible circuit board 31.

[0051] Please refer to Figure 3 , Figure 3 It is a partial cross-sectional structural diagram of another display module provided in an embodiment of the first aspect of the present application.

[0052] In some optional embodiments, the display panel 1 also includes a touch layer 12, which is arranged on the side of the light-emitting device layer 11 close to the cover body 2, and the flexible connector 3 includes a second flexible circuit board 32, and the first connecting portion 3a of the second flexible circuit board 32 is connected to the touch layer 12; the limiting structure 22 includes a second limiting portion 222, and the second limiting portion 222 is arranged between the first surface 211 and the first connecting portion 3a of the second flexible circuit board 32.

[0053] Optionally, a touch layer 12 is deposited on one side of the light-emitting device layer 11 by evaporation. The touch layer 12 may include multiple touch electrodes arranged in an array across the entire display area AA. A second flexible circuit board 32 connects the touch layer 12 to a touch chip 172 located on the backlight side, enabling the touch function of the display module 10. The location of the touch chip 172 on the backlight side of the display panel 1 further improves the screen-to-body ratio of the display panel 1. The second connection portion 3c of the second flexible circuit board 32 can be bonded to the second connection portion 3c of the first flexible circuit board 31 to facilitate connection to an external control chip while reducing the overall thickness of the display module 10. By disposing a second stopper 222 between the first surface 211 and the first connection portion 3a of the second flexible circuit board 32, the second stopper 222 can prevent the first connection portion 3a of the second flexible circuit board 32 from bending toward the cover plate 21, preventing cracks in the second flexible circuit board 32 and improving the reliability of the display module 10.

[0054] Similarly, the second limiting portion 222 may be used only to abut the first connecting portion 3a of the second flexible circuit board 32. In some optional embodiments, the second flexible circuit board 32 may be connected to the limiting structure 22 on the side of the touch layer 12 facing the cover plate 21, so that the second limiting portion 222 also supports the second flexible circuit board 32, thereby improving the relative position stability between the limiting structure 22 and the second flexible circuit board 32.

[0055] In some optional embodiments, the orthographic projection of the touch layer 12 on the cover plate 21 is spaced apart from or adjacent to the orthographic projection of the second limiting portion 222 on the cover plate 21. Those skilled in the art will appreciate that the touch layer 12 can extend to the binding area BB, and the limiting structure 22 is connected to the touch layer 12 in the binding area BB. This arrangement will not affect the normal display of the display area AA of the display panel 1. The orthographic projection of the touch layer 12 on the cover plate 21 is spaced apart from or adjacent to the orthographic projection of the second limiting portion 222 on the cover plate 21, that is, the second limiting portion 222 is not disposed between the touch layer 12 and the cover plate 21. The second limiting portion 222 only has a limiting effect on the second flexible circuit board 32 suspended on one side of the touch layer 12.

[0056] In other embodiments, the projection of the touch layer 12 on the cover plate 21 at least partially overlaps with the projection of the second limiting portion 222 on the cover plate 21, that is, the second limiting portion 222 is at least partially arranged between the touch layer 12 and the cover plate 21, and the second limiting portion 222 has a limiting effect on at least the second flexible circuit board 32 located on the surface of the touch layer 12.

[0057] Please refer to Figure 4 , Figure 4 This is a structural diagram of a cover provided in an embodiment of the first aspect of the present application.

[0058] In some optional embodiments, along the direction from the cover 2 to the display panel 1, i.e., the thickness direction Y of the display module 10, the thickness of the first limiting portion 221 is greater than the thickness of the second limiting portion 222. In these optional embodiments, because the touch layer 12 is disposed on the side of the light-emitting device layer 11 close to the cover 2, the thickness of the first limiting portion 221 is set to be greater than the thickness of the second limiting portion 222. This allows the first limiting portion 221 and the second limiting portion 222 to differentially limit the first connecting portion 3a of the first flexible circuit board 31 and the first connecting portion 3a of the second flexible circuit board 32, respectively.

[0059] In some optional embodiments, the display module 10 also includes an optical film layer 13 and an optical adhesive layer 14, the optical film layer 13 and the optical adhesive layer 14 cover the display area AA, the optical film layer 13 is arranged on the side of the touch layer 12 close to the cover body 2, the optical adhesive layer 14 is adhered to the cover body 2 and the optical film layer 13, and along the thickness direction Y of the display module 10, the sum of the thickness of the second limiting portion 222 and the second flexible circuit board 32 is equal to the sum of the thickness of the optical film layer 13 and the optical adhesive layer 14.

[0060] Optionally, the optical film layer 13 may include a polarizer, an anti-reflection film, etc., and the optical adhesive layer 14 may be a transparent TOCA (Thermal-melt Optical Clear Adhesive). The optical film layer 13 is bonded to the cover body 2 through the optical adhesive layer 14. The display panel 1 can emit light through the light-emitting device layer 11 and transmit it out of the display panel 1 through the optical film layer 13, so that the user can see the image displayed by the display panel 1. The optical film layer 13 can also improve the contrast of the display module 10. Optionally, the optical film layer 13 is arranged on the side of the touch layer 12 close to the cover body 2. After the display panel 1 is manufactured, the optical film layer 13 and the touch layer 12 are attached to the display panel 1 as a whole. In one embodiment, the thickness of the optical film layer 13 is 0.1 to 0.15 mm, and the thickness of the optical adhesive layer 14 is 1.5 mm. Those skilled in the art will easily understand that the thickness of the optical film layer 13 and the optical adhesive layer 14 can be selected according to actual needs, and this application will not go into details here. By setting the thickness of the second limiting portion 222 , the second limiting portion 222 can just contact the first connecting portion 3 a of the second flexible circuit board 32 , thereby preventing the second flexible circuit board 32 from breaking to a certain extent.

[0061] In some optional embodiments, the optical adhesive layer 14 includes a first bonding portion and a second bonding portion (not shown). The first bonding portion is located in the display area AA, and the second bonding portion extends from the first bonding portion to the binding area BB. At least a portion of the first connecting portion 3a of the second flexible circuit board 32 is bonded to the cover body 2 via the second bonding portion. In these optional embodiments, the first bonding portion is bonded to the cover plate 21, and the second bonding portion bonds the second flexible circuit board 32 to the cover body 2. This prevents the second flexible circuit board 32 from moving and increases the stability of the connection between the second flexible circuit board 32 and the touch layer 12.

[0062] In some optional embodiments, the display panel 1 includes a light-emitting device layer 11 and an encapsulation layer 15, the encapsulation layer 15 is located on the side of the light-emitting device layer 11 facing the touch layer 12, and along the thickness direction Y of the display module 10, the sum of the thicknesses of the first limiting portion 221 and the first flexible circuit board 31 is equal to the sum of the thicknesses of the optical film layer 13, the optical adhesive layer 14, the touch layer 12 and the encapsulation layer 15.

[0063] Optionally, the display panel 1 further includes a substrate layer 16, which is disposed on a side of the light-emitting device layer 11 away from the cover 2. A driver chip 17 is disposed on a side of the substrate layer 16 away from the light-emitting device layer 11, i.e., on the backlight side of the display panel 1. The second connection portion 3c of the first flexible circuit board 31 and the second connection portion 3c of the second flexible circuit board 32 are electrically connected to the driver chip 17, respectively, enabling the light-emitting device layer 11 to emit light and the touch layer 12 to control touch. Optionally, the substrate layer 16 may comprise a transparent insulating organic material. The encapsulation layer 15 may be a thin-film encapsulation structure, used to encapsulate the light-emitting device layer 11 and the substrate layer 16 to prevent water and oxygen from entering the light-emitting device layer 11. The encapsulation layer 15 may further comprise an organic encapsulation layer and an inorganic encapsulation layer, wherein the number of organic and inorganic encapsulation layers may be one or more, and the specific number of layers is not limited in this application. In the embodiment of the present application, the thickness of the encapsulation layer 15 is 0.25 mm. Those skilled in the art will readily appreciate that the thickness of the encapsulation layer 15 can be selected according to actual needs, and this application will not elaborate further here. The thickness of the first limiting portion 221 is set so that it can just contact the first connecting portion 3a of the first flexible circuit board 31, thereby avoiding or reducing the occurrence of cracks in the first flexible circuit board 31. Optionally, the display module 10 also includes a spacer layer 18, which is located between the substrate layer 16 and the flexible connector 3. The spacer layer 18 is used to fix the display driver chip 171, wherein the height of the display driver chip 171 is less than or equal to the height of the spacer layer 18. The material of the spacer layer 18 can be PET or foam, which will not be further described in this application.

[0064] In some optional embodiments, the first limiting portion 221 and the second limiting portion 222 are connected along the first direction X. In other optional embodiments, the first limiting portion 221 and the second limiting portion 222 are spaced apart along the first direction X, where the first direction X is perpendicular to the thickness direction Y of the display module 10. In these optional embodiments, the connection of the first limiting portion 221 and the second limiting portion 222 allows for integral molding during the manufacture of the cover 2, facilitating processing. Furthermore, the spacing of the first limiting portion 221 and the second limiting portion 222 allows for flexible placement of the first limiting portion 221 and the second limiting portion 222 according to the spacing between the first flexible circuit board 31 and the second flexible circuit board 32, thereby reducing the overall size of the limiting structure 22.

[0065] In some optional embodiments, the retaining structure 22 and the cover plate 21 are integrally formed. In these optional embodiments, the integral retaining structure 22 and cover plate 21 can be manufactured through a hot pressing process and / or a cold casting process. The integral retaining structure 22 and cover plate 21 facilitates assembly of the display module 10.

[0066] In some optional embodiments, the limiting structure 22 is an insulating strip attached to the cover plate 21. In these optional embodiments, the limiting structure 22 is configured as a rectangular insulating strip, and the limiting structure 22 is attached to the cover plate 21 by double-sided tape, transparent tape, etc. This configuration simplifies the structure and reduces the cost of the product. Optionally, the abutting surface 221a of the insulating strip can be a plane perpendicular to the thickness direction Y of the display panel 1, so that the entire surface of the first connecting portion 3a close to the abutting surface 221a can be flatly attached to the abutting surface 221a, and the force between the limiting structure 22 and the first connecting portion 3a is uniform.

[0067] Please refer to Figure 5 , Figure 5 This is a schematic structural diagram of another cover body provided in an embodiment of the first aspect of the present application.

[0068] In other optional embodiments, the surface of the limiting structure 22 away from the cover body 2 is a curved surface, that is, the abutting surface 221a is a curved surface. In these optional embodiments, the limiting structure 22 protrudes from the first surface 211. The curved surface can better abut the first connecting portion 3a of the flexible connector 3, leaving a certain amount of interference, ensuring that the flexible connector 3 will not break after bending, further improving the reliability of the display module 10. The curved surface can also prevent the limiting structure 22 from having protruding corners, to a certain extent preventing friction between the limiting structure 22 and the first connecting portion 3a, which could cause the corners in the limiting structure 22 to pierce the first connecting portion 3a.

[0069] See also Figure 6 , Figure 6 It is a structural schematic diagram of the display device provided in the embodiment of the second aspect of the present application.

[0070] The second embodiment of the present application further provides a display device 20, comprising the display module 10 of any of the first embodiments. Optionally, the display device 20 may further comprise a middle frame, and the display module 10 is mounted on the middle frame.

[0071] The display device 20 provided in the embodiment of the present application has the relevant structure of the aforementioned display module 10. Please refer to the display module 10 provided in the above embodiments. It has all the beneficial effects of the aforementioned display module 10 and will not be repeated here.

[0072] While the embodiments described above are not exhaustive, they do not limit the invention to specific embodiments. Clearly, numerous modifications and variations are possible based on the above description. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A display module, characterized in that: include: A display panel having a display area and a binding area located on one side of the display area; a cover body, comprising a cover plate and a limiting structure connected to each other, wherein the cover plate is provided on one side of the display panel, and the limiting structure is provided on a first surface of the cover plate facing the display panel, and the limiting structure protrudes from the first surface; A flexible connector includes a first connecting portion, a bending portion, and a second connecting portion, wherein the first connecting portion is connected to the binding area of ​​the display panel, the second connecting portion is arranged on the side of the display panel away from the cover plate, the bending portion is at least partially bent into an arc shape and connects the first connecting portion and the second connecting portion, and the limiting structure is arranged between the first surface and the first connecting portion.

2. The display module according to claim 1, wherein: The limiting structure includes an abutting surface for abutting the first connecting portion, and a maximum height from the abutting surface to the first surface is equal to a maximum spacing distance between the first connecting portion and the first surface.

3. The display module according to claim 1, wherein: The display panel includes a light-emitting device layer, the flexible connector includes a first flexible circuit board, and the first connection portion of the first flexible circuit board is connected to the binding area of ​​the light-emitting device layer; The limiting structure includes a first limiting portion, which is arranged between the first surface and the first connecting portion of the first flexible circuit board.

4. The display module according to claim 3, wherein: The first flexible circuit board is connected to the limiting structure on a side of the light-emitting device layer facing the cover plate.

5. The display module according to claim 3, wherein: The display panel further includes a touch layer, the touch layer being disposed on a side of the light-emitting device layer close to the cover body, the flexible connector including a second flexible circuit board, the first connection portion of the second flexible circuit board being connected to the touch layer; The limiting structure includes a second limiting portion, which is arranged between the first surface and the first connecting portion of the second flexible circuit board.

6. The display module according to claim 5, wherein: The orthographic projection of the touch layer on the cover plate is spaced apart from or adjacent to the orthographic projection of the limiting structure on the cover plate; Alternatively, a projection of the touch layer on the cover plate and a projection of the limiting structure on the cover plate at least partially overlap.

7. The display module according to claim 5, wherein: Along the thickness direction of the display module, the thickness of the first limiting portion is greater than the thickness of the second limiting portion.

8. The display module according to claim 5, wherein: The display module also includes an optical film layer and an optical adhesive layer, which cover the display area. The optical film layer is arranged on the side of the touch layer close to the cover body. The optical adhesive layer is adhered to the cover body and the optical film layer. Along the thickness direction of the display module, the sum of the thickness of the second limiting portion and the second flexible circuit board is equal to the sum of the thickness of the optical film layer and the optical adhesive layer.

9. The display module according to claim 8, wherein: The optical adhesive layer includes a first bonding portion and a second bonding portion, the first bonding portion is located in the display area, the second bonding portion extends from the first bonding portion to the binding area, and at least part of the first connecting portion of the second flexible circuit board is adhered to the cover body through the second bonding portion.

10. The display module according to claim 8, wherein: The display panel includes a light-emitting device layer and an encapsulation layer. The encapsulation layer is located on the side of the light-emitting device layer facing the touch layer. Along the thickness direction of the display module, the sum of the thickness of the first limiting portion and the first flexible circuit board is equal to the sum of the thickness of the optical film layer, the optical adhesive layer, the touch layer and the encapsulation layer.

11. The display module according to claim 5, wherein: The first limiting portion and the second limiting portion are connected along a first direction; Alternatively, the first limiting portion and the second limiting portion are spaced apart along a first direction, and the first direction is perpendicular to a thickness direction of the display module.

12. The display module according to claim 1, wherein: The limiting structure and the cover plate are integrated.

13. The display module according to claim 1, wherein: The surface of the limiting structure away from the cover body is a curved surface.

14. The display module according to claim 1, wherein: The limiting structure is an insulating strip attached to the cover plate.

15. A display device, characterized in that: include: The display module according to any one of claims 1 to 14.

Images