Display module and display device

Abstract

Embodiments of the present application disclose a display module and a display device, the display module comprises a bending area and a non-bending area, further comprising a display panel, a first support layer and a second support layer, the first support layer and the second support layer are located on the non-light-emitting side of the display panel, and the first support layer is located on the side of the second support layer close to the display panel, the surface of the side of the first support layer close to the display panel is a complete surface, the bending area of the second support layer is provided with a hollow area, the hollow area penetrates the second support layer along the thickness direction of the second support layer, a buffer protection structure is arranged in the hollow area, the elastic modulus of the buffer protection structure is greater than the elastic modulus of the second support layer, the above scheme thins the overall thickness of the support layer by arranging the hollow area in the bending area of the second support layer, improves the bending performance of the display module, and at the same time, the buffer protection structure with the elastic modulus greater than that of the second support layer is arranged in the hollow area, thereby improving the impact resistance of the display module.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display module and a display device. BACKGROUND

[0002] In existing display products, the impact resistance of the display module is usually improved by increasing the thickness of the module, but the increase in the thickness of the module leads to poor bending performance of the display module, so that the display module cannot balance the bending performance and the impact resistance. SUMMARY

[0003] Embodiments of the present application provide a display module and a display device, by setting a hollow area in the bending area of the second support layer, and setting a buffer protection structure in the hollow area, the elastic modulus of the buffer protection structure is greater than the elastic modulus of the second support layer, so as to improve the bending performance of the display module while improving the impact resistance of the display module.

[0004] In a first aspect, embodiments of the present application provide a display module, comprising a bending area and a non-bending area.

[0005] The display module further comprises a display panel, a first support layer and a second support layer.

[0006] The first support layer and the second support layer are located on the non-light-emitting side of the display panel, and the first support layer is located on the side of the second support layer close to the display panel.

[0007] The surface of the first support layer close to the display panel is a complete surface.

[0008] The bending area of the second support layer is provided with a hollow area, and the hollow area penetrates the second support layer along the thickness direction of the second support layer.

[0009] The buffer protection structure is arranged in the hollow area, and the elastic modulus of the buffer protection structure is greater than the elastic modulus of the second support layer.

[0010] In a second aspect, embodiments of the present application further provide a display device comprising the display module of the first aspect.

[0011] The display module provided by the application comprises a first support layer and a second support layer arranged on the non-light-emitting side of a display panel, the first support layer is located on the side of the second support layer close to the display panel, wherein the surface of the first support layer close to the display panel is a complete surface to ensure the flatness of the upper surface of the first support layer, the bending area of the second support layer is provided with a hollow area, the hollow area penetrates the second support layer along the thickness direction of the second support layer, thereby hollowing out part of the bending area of the second support layer to reduce the overall thickness of the first support layer and the second support layer in the bending area, thereby improving the bending performance of the display module, and a buffer protection structure is further arranged in the hollow area, the elastic modulus of the buffer protection structure is greater than that of the second support layer, and the buffer protection structure with a greater elastic modulus is not easy to deform when impacted, thereby improving the impact resistance of the display module. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some specific embodiments of the present application, and for those skilled in the art, the basic concepts of device structure, driving method and manufacturing method disclosed and suggested by various embodiments of the present application can be extended and extended to other structures and drawings, and it is needless to say that these should be within the scope of the claims of the present application.

[0013] Figure 1 is a structural schematic diagram of a display module provided by an embodiment of the present application;

[0014] Figure 2 is Figure 1 is a sectional structure diagram along the A-A' direction in

[0015] Figure 3 is a structural schematic diagram of a buffer protection structure provided by an embodiment of the present application;

[0016] Figure 4 is a structural schematic diagram of another buffer protection structure provided by an embodiment of the present application;

[0017] Figure 5 is a structural schematic diagram of another buffer protection structure provided by an embodiment of the present application;

[0018] Figure 6 is a structural schematic diagram of another buffer protection structure provided by an embodiment of the present application;

[0019] Figure 7 is a structural schematic diagram of another buffer protection structure provided by an embodiment of the present application;

[0020] Figure 8This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention;

[0021] Figure 9 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention;

[0022] Figure 10 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention;

[0023] Figure 11 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention;

[0024] Figure 12 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention;

[0025] Figure 13 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention;

[0026] Figure 14 yes Figure 1 A simplified diagram of another cross-sectional structure along the AA' direction;

[0027] Figure 15 yes Figure 1 A simplified diagram of another cross-sectional structure along the AA' direction;

[0028] Figure 16 yes Figure 1 A simplified diagram of another cross-sectional structure along the AA' direction;

[0029] Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the basic concepts disclosed and indicated in the embodiments of this invention, all other embodiments obtained by those skilled in the art are within the scope of protection of this invention.

[0031] Figure 1 This is a schematic diagram of the structure of a display module provided in an embodiment of the present invention. Figure 2 yes Figure 1 A simplified cross-sectional diagram along the A-A' direction. See also... Figure 1 and Figure 2The display module includes a bending area AA and a non-bending area AB. The display module also includes a display panel 10, a first support layer 20 and a second support layer 30. The first support layer 20 and the second support layer 30 are both located on the non-light-emitting side of the display panel 10, and the first support layer 20 is located on the side of the second support layer 30 closer to the display panel 10. The surface 210 of the first support layer 20 on the side closer to the display panel 10 is a complete surface. The bending area AA of the second support layer 30 is provided with a hollow area 310. Along the thickness direction of the second support layer 30, the hollow area 310 penetrates the second support layer 30. A buffer protection structure 320 is provided in the hollow area 310. The elastic modulus of the buffer protection structure 320 is greater than the elastic modulus of the second support layer 30.

[0032] For details, see Figure 1 and Figure 2 The display module can be a foldable display module, including a bending area AA and a non-bending area AB, where the non-bending area AB can be located on both sides of the bending area AA. In the flattened state, both the bending area AA and the non-bending area AB are flat and on the same horizontal plane. At this time, the radii of curvature of both the non-bending area AB and the bending area AA are infinite, and their radii of curvature are equal. In the folded state, the bending area AA can be bent around the bending axis a, and thus the non-bending areas AB located on both sides of the bending area AA can be folded through the bending axis a, achieving the folding of the display module. At this time, the non-bending area AB is flat, and its radius of curvature remains infinite. The bending area AA is bent around the bending axis a at a certain angle, and its radius of curvature is the bending radius of the bending area AA. Furthermore, the radius of curvature of the non-bending area AB is greater than that of the bending area AA.

[0033] It is understood that, in order to illustrate the bending center of the bending region AA, the bending axis a is introduced in this embodiment of the invention. Those skilled in the art will readily realize that in actual products, the bending axis a is not a solid structure, and the bending axes of different film layers in the bending region AA may have a certain degree of offset. Therefore, the bending axis a mentioned in this embodiment of the invention represents a virtual approximate range.

[0034] Optionally, the display module further includes a display panel 10, which may include an array substrate (not shown), an organic light-emitting layer (not shown), an encapsulation layer (not shown), and a touch layer (not shown) stacked sequentially. The array substrate may include a driving circuit, and the organic light-emitting layer may include multiple light-emitting elements. The driving circuit is electrically connected to the light-emitting elements and is used to drive the light-emitting elements to emit light. The specific configuration of the driving circuit may differ depending on the driving method of the light-emitting elements. Specifically, when the driving method of the light-emitting elements is active driving, the driving circuit may include multiple thin-film transistors to drive the light-emitting elements to emit light; when the driving method of the light-emitting elements is passive driving, the driving circuit may include cathode signal lines and anode signal lines to provide the light-emitting elements with the cathode and anode signals required for light emission, thereby driving the light-emitting elements to emit light. This embodiment of the invention does not describe the specific configuration of the driving circuit.

[0035] Optionally, the side of the organic light-emitting layer away from the array substrate can also be encapsulated. The encapsulation layer can be at least a stacked structure of inorganic layer-organic layer-inorganic layer. The encapsulation layer can prevent water and oxygen from eroding the organic light-emitting layer.

[0036] Optionally, a touch layer is also included on the side of the encapsulation layer away from the array substrate. The touch layer may include touch traces and touch capacitors. One end of the touch trace is electrically connected to the touch capacitor, and the other end is electrically connected to the driver chip. The driver chip transmits touch driving signals to one of the capacitor substrates of the touch capacitor and feeds back touch sensing signals to the driver chip based on the touch operation in the capacitor substrate. The driver chip is used to determine whether a touch operation has occurred and the specific touch amount based on the touch driving signal and the touch sensing signal, thereby realizing the touch function of the display module.

[0037] It should be noted that the above embodiments are illustrated using an OLED display panel as an example, and the present invention is not limited thereto. In other embodiments, other types of display panels may also be used. Furthermore, embodiments of the present invention may also include other structures necessary to ensure the normal operation of the display panel, which will not be elaborated upon here.

[0038] Specifically, a first support layer 20 and a second support layer 30 are provided on the non-light-emitting side of the display panel 10. The first support layer 20 is located on the side of the second support layer 30 closest to the display panel 10. The first support layer 20 and the second support layer 30 can be fixed by means of adhesive, riveting, or welding, thereby providing support and protection for the display panel 10. In the prior art, to improve the impact resistance of the display module, the thickness of the support layer is usually increased. However, increasing the thickness of the support layer will result in poor bending performance of the display module, making it impossible for the display module to simultaneously achieve both bending performance and impact resistance.

[0039] To address this, this embodiment of the invention provides a hollow area 310 in the bending region AA of the second support layer 30. The hollow area 310 completely penetrates the second support layer 30 along its thickness direction, thereby reducing the overall thickness of the first support layer 20 and the second support layer 30. This improves the bending performance of the display module in the bending region AA. Furthermore, a buffer protection structure 320 is provided in the hollow area 310. The buffer protection structure 320 can cover the hollow area 310, and its upper surface is bonded to the first support layer 20 through an adhesive layer. The elastic modulus of the buffer protection structure 320 is greater than that of the second support layer 30. As a result, the buffer protection structure 320 with a larger elastic modulus is less prone to deformation when subjected to impact, thus improving the impact resistance of the display module.

[0040] It should be noted that the surface of the first support layer 20 near the display panel 10 can be a complete panel, that is, the first support layer 20 is not etched or otherwise processed, or the first support layer 20 is partially etched on the side away from the display panel, and the trenches do not affect the surface of the first support layer 20 near the display panel 10, so as to ensure the flatness of the surface of the first support layer 20 near the display panel 10.

[0041] It should also be noted that the above embodiments are described with the support structure including the first support layer 20 and the second support layer 30. In addition, the support structure may also include only one support layer, that is, the first support layer 20 and the second support layer 30 are an integral structure. Then, a hollow area is set on the side of the support layer away from the display panel. The hollow area penetrates part of the support layer. By setting a buffer protection structure with an elastic modulus greater than that of the support layer in the hollow area, the bending performance of the bending area of ​​the display module can be improved, as well as the impact resistance of the bending area of ​​the display module can be improved.

[0042] In summary, the embodiments of the present invention ensure the flatness of the surface of the first support layer near the display panel by setting the surface of the first support layer as a complete surface. Furthermore, by setting a hollow area in the bending region of the second support layer, which completely penetrates the second support layer along the thickness direction of the display panel, the overall thickness of the first and second support layers in the bending region is reduced, improving the bending performance of the display module. In addition, a buffer protection structure is provided in the hollow area of ​​the second support layer. The elastic modulus of the buffer protection structure is greater than that of the second support layer. Therefore, the buffer protection structure with a larger elastic modulus is less prone to deformation under impact, thereby improving the impact resistance of the bending region of the display module.

[0043] It should be noted that the buffer protection structure can be a single piece or it can include multiple buffer protection structure parts. The following describes the case where the buffer protection structure includes multiple buffer protection structure parts in conjunction with specific embodiments.

[0044] Optional, Figure 3 This is a schematic diagram of a buffer protection structure provided in an embodiment of the present invention. See also: Figure 1 and Figure 3 The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction X. The first direction X intersects the extension direction of the bending axis a. Along the first direction X, the distance D between two adjacent buffer protection structure portions 321 in the center region 311 of the hollow region 310 is smaller than the distance D between two adjacent buffer protection structure portions 321 in the edge region 312 of the hollow region 310.

[0045] Specifically, such as Figure 1 and Figure 3 As shown, the buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction. Each buffer protection structure portion 321 includes a portion near the center of the hollowed-out region 310 and a portion near the edge of the hollowed-out region 310. Specifically, each buffer protection structure portion 321 includes a portion located in the central region 311 of the hollowed-out region 310 and a portion located in the edge region 312 of the hollowed-out region 310, with the edge region 312 located on both sides of the central region 311. Furthermore, by setting two adjacent buffer protection structure portions 321 in the central region 311 of the hollowed-out region 310... The spacing D is smaller than the spacing D between two adjacent buffer protection structure portions 321 in the two edge regions 312, making the spacing D between any two adjacent buffer protection structure portions 321 in the central region 311 of the hollow region 310 smaller. When bending, the smaller spacing improves the impact resistance of the central region 312. In addition, the spacing D between any two adjacent buffer protection structure portions 321 in the edge regions 312 of the hollow region 310 is larger. When bending, the larger spacing improves the bending performance of the edge regions 312. Thus, the central region 311 of the hollow region 310 has better impact resistance and bending performance.

[0046] It should be noted that, Figure 3This example only illustrates that the spacing D between any two adjacent buffer protection structure portions 321 in the central region 311 of the hollow region 310 is the same, and the spacing D between any two adjacent buffer protection structure portions 321 in the two edge regions 312 is the same. Furthermore, the spacing between two adjacent buffer protection structure portions 321 in the central region 311 of the hollow region 310 is smaller than the spacing between two adjacent buffer protection structure portions 321 in the two edge regions 312. However, this is not a limitation. In other embodiments, the spacing D between two adjacent buffer protection structure portions 321 may gradually increase along the direction from the central region 311 of the hollow region 310 to the edge region 312. Those skilled in the art can set this as needed.

[0047] Optional, Figure 4 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 1 and Figure 4 The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction X. The first direction X intersects the extension direction of the bending axis a. Along the first direction X, the distance D between two adjacent buffer protection structure portions 321 in the center region 311 of the hollow region 310 is greater than the distance D between two adjacent buffer protection structure portions 321 in the edge region 312 of the hollow region 310.

[0048] Specifically, such as Figure 1 and Figure 4As shown, the buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction. Each buffer protection structure portion 321 includes a portion near the center of the hollowed-out region 310 and a portion near the edge of the hollowed-out region 310. Specifically, each buffer protection structure portion 321 includes a portion located in the central region 311 of the hollowed-out region 310 and a portion located in the edge region 312 of the hollowed-out region 310, with the edge region 312 located on both sides of the central region 311. Furthermore, by setting two adjacent buffer protection structure portions 321 in the central region 311 of the hollowed-out region 310... The spacing D of 1 is greater than the spacing D of two adjacent buffer protection structure portions 321 in the two edge regions 312, so that the spacing between any two adjacent buffer protection structure portions 321 in the central region 311 of the hollow region 310 is larger. When bending, the bending performance of the central region 312 is improved by the larger spacing. In addition, the spacing between any two adjacent buffer protection structure portions 321 in the edge regions 312 of the hollow region 310 is smaller. When bending, the impact resistance of the edge region 312 is improved by the smaller spacing. Thus, the bending performance of the central region 311 of the hollow region 310 is better, and the impact resistance of the central region 311 is better.

[0049] It should be noted that, Figure 4 This example only illustrates that the spacing D between any two adjacent buffer protection structure portions 321 in the central region 311 of the hollow region 310 is the same, and the spacing D between any two adjacent buffer protection structure portions 321 in the two edge regions 312 is the same. Furthermore, the spacing between two adjacent buffer protection structure portions 321 in the central region 311 of the hollow region 310 is greater than the spacing between two adjacent buffer protection structure portions 321 in the two edge regions 312. However, this is not a limitation. In other embodiments, the spacing D between two adjacent buffer protection structure portions 321 may gradually decrease along the direction from the central region 311 of the hollow region 310 to the edge region 312. Those skilled in the art can set this as needed.

[0050] It should also be noted that the accompanying drawings of the embodiments of the present invention are all illustrated with the display module in a flattened state as an example. At this time, the first direction X can be perpendicular to the thickness direction of the second support layer 30. When the display module is in a folded state, the first direction X intersects with the extension direction of the bending axis a.

[0051] It is understood that the bending mentioned above refers to the display module bending inward, that is, when the display module bends towards the hollow area 310, the central area 311 of the hollow area 310 has better impact resistance, better bending performance, and better impact resistance. Moreover, those skilled in the art can set it according to actual needs.

[0052] Optional, see below Figure 3 and Figure 4 Along the first direction X, the width L of the multiple buffer protection structure portions 321 is the same. Specifically, the multiple buffer protection structure portions 321 are the same size and shape, which simplifies the arrangement of the buffer protection structure portions 321. This allows the spacing D between two adjacent buffer protection structure portions 321 in the central region 311 to be set smaller than the spacing D between two adjacent buffer protection structure portions 321 in the edge region 312, or the spacing D between two adjacent buffer protection structure portions 321 in the central region 311 to be set larger than the spacing D between two adjacent buffer protection structure portions 321 in the edge region 312.

[0053] The above embodiment is illustrated by taking the example of multiple buffer protection structure portions 321 having the same width L but different spacing D. The following is illustrated by taking a specific embodiment of multiple buffer protection structure portions 321 having the same spacing D but different width L.

[0054] Optional, Figure 5 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 1 and Figure 5 The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction X. The first direction X intersects the extension direction of the bending axis a. Along the first direction X, the widths L of the multiple buffer protection structure portions 321 are different, and the width L of the buffer protection structure portion 321 located in the center region 311 of the hollow region 310 is greater than the width L of the buffer protection structure portion 321 located in the edge region 312 of the hollow region 310.

[0055] For details, see Figure 1 and Figure 5The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction. Each buffer protection structure portion 321 includes a portion near the center of the hollow area 310 and a portion near the edge of the hollow area 310. That is, the multiple buffer protection structure portions 321 include a portion located in the center area 311 of the hollow area 310 and a portion located in the edge area 312 of the hollow area 310, wherein the edge area 312 is located on both sides of the center area 311. Furthermore, the width L of the multiple buffer protection structure portions 321 is different along the first direction X. Specifically, along the first direction X, the width L of the buffer protection structure portion 321 located in the central region 311 can be set to be the same, and the width L of the buffer protection structure portion 321 located in the two edge regions 312 can be the same. Moreover, the width L of the buffer protection structure portion 321 located in the central region 311 is greater than the width L of the buffer protection structure portion 321 located in the edge region 312. This makes the multiple buffer protection structure portions 321 form a structure in the hollowed-out region 310 where the middle buffer protection structure portion 321 is wider and the two side buffer protection structure portions 321 are narrower. This makes the teardrop shape formed by the multiple buffer protection structure portions 321 when bent more full and rounded.

[0056] In yet another embodiment, Figure 6 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 6 Along the direction from the center region 311 of the hollowed-out region 310 to the edge region 312 of the hollowed-out region 310, the width L of the buffer protection structure section 321 decreases sequentially.

[0057] Specifically, such as Figure 6 As shown, along the first direction X, the width L of the buffer protection structure portion 321 located in the central region 311 can be different, and the width L of the buffer protection structure portion 321 located in the two edge regions 312 can be different. Furthermore, along the direction from the central region 311 of the hollow region 310 to the edge region 312 of the hollow region 310, the width L of the buffer protection structure portion 321 decreases sequentially. That is, from the central region 311 to the two edge regions 312, the width L of the buffer protection structure portion 321 gradually decreases, so that the width changes of multiple buffer protection structure portions 321 form a gradient structure. This further makes the teardrop shape formed by the multiple buffer protection structure portions 321 when bent more full and rounded.

[0058] Optional, Figure 7 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 1 and Figure 7The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction X. The first direction X intersects the extension direction of the bending axis a. Along the first direction X, the widths L of the multiple buffer protection structure portions 321 are different, and the width L of the buffer protection structure portion 321 located in the center region 311 of the hollow region 310 is smaller than the width L of the buffer protection structure portion 321 located in the edge region 312 of the hollow region 310.

[0059] For details, see Figure 1 and Figure 7 The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along the first direction X. Each buffer protection structure portion 321 includes a portion near the center of the hollow area 310 and a portion near the edge of the hollow area 310. That is, the multiple buffer protection structure portions 321 include a portion located in the center area 311 of the hollow area 310 and a portion located in the edge area 312 of the hollow area 310, wherein the edge area 312 is located on both sides of the center area 311. Furthermore, the width L of the multiple buffer protection structure portions 321 is different along the first direction X. Specifically, along the first direction X, the width L of the buffer protection structure portion 321 located in the central region 311 can be the same, and the width L of the buffer protection structure portion 321 located in the two edge regions 312 can be the same. Moreover, the width L of the buffer protection structure portion 321 located in the central region 311 is smaller than the width L of the buffer protection structure portion 321 located in the edge region 312. This results in the multiple buffer protection structure portions 321 forming a structure in the hollowed-out region 310 where the middle buffer protection structure portion 321 is narrower and the two side buffer protection structure portions 321 are wider. This reduces the radius of the water droplet formed when the multiple buffer protection structure portions 321 are bent, and the overall shape of the water droplet is elongated.

[0060] In yet another embodiment, Figure 8 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 8 The width L of the buffer protection structure portion 321 increases sequentially from the center region 311 of the hollowed-out region 310 to the edge region 312 of the hollowed-out region 310.

[0061] Specifically, such as Figure 8As shown, along the first direction X, the width L of the buffer protection structure portion 321 located in the central region 311 can be different, and the width L of the buffer protection structure portion 321 located in the two edge regions 312 can be different. And along the direction from the central region 311 of the hollow region 310 to the edge region 312 of the hollow region 310, the width L of the buffer protection structure portion 321 increases sequentially. That is, from the central region 311 to the two edge regions 312, the width L of the buffer protection structure portion 321 gradually increases, so that the width changes of multiple buffer protection structure portions 321 form a gradient structure. In this way, the radius of the water droplet formed when the multiple buffer protection structure portions 321 are bent is further reduced, so that the overall shape of the water droplet is elongated.

[0062] See also Figures 5-8 Optionally, along the first direction X, the spacing D between any two adjacent buffer protection structure portions 321 is the same. Specifically, along the first direction X, multiple buffer protection structure portions 321 are evenly spaced to simplify the setting of the spacing D between any two adjacent buffer protection structure portions 321.

[0063] It should be noted that those skilled in the art can combine the reserved space in the display module and the hinge trajectory to set the width L of the buffer protection structure portion 321 in the center region 311 of the hollow region 310 to be greater than the width L of the buffer protection structure portion 321 in the edge region 312 of the hollow region 310; or the width L of the buffer protection structure portion 321 in the center region 311 of the hollow region 310 to be less than the width L of the buffer protection structure portion 321 in the edge region 312 of the hollow region 310.

[0064] The following description, in conjunction with specific embodiments, illustrates the case where the widths and spacings of multiple buffer protection structure portions 321 are not the same.

[0065] Optional, Figure 9 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 1 and Figure 9 The buffer protection structure 320 includes a plurality of buffer protection structure portions 321, which are arranged along a first direction X. The first direction X intersects the extension direction of the bending axis a. Along the first direction X, the distance D between two adjacent buffer protection structure portions 321 in the center region 311 of the hollow region 310 is greater than the distance D between two adjacent buffer protection structure portions 321 in the edge region 312 of the hollow region 310. The width L of the buffer protection structure portion 321 in the center region 311 of the hollow region 310 is greater than the width L of the buffer protection structure portion 321 in the edge region 312 of the hollow region 310.

[0066] For details, see Figure 9 The buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along a first direction X. Each buffer protection structure portion 321 includes a portion near the center of the hollowed-out area 310 and a portion near the edge of the hollowed-out area 310. Specifically, each buffer protection structure portion 321 includes a portion located in the central region 311 of the hollowed-out area 310 and a portion located in the edge region 312 of the hollowed-out area 310, with the edge region 312 located on both sides of the central region 311. Furthermore, in the first direction X, the width L of the buffer protection structure portion 321 located in the central region 311 is set to be greater than the width L of the buffer protection structure portion 321 located in the edge region 312. This ensures that when the multiple buffer protection structure portions 321 are bent into a full and rounded teardrop shape, if the portion located in the central region... The distance between two adjacent buffer protection structure portions 321 in region 311 is small, that is, the spacing D between the wider buffer protection structure portions 321 in the central region 311 is too small, which makes it difficult for the hollow region 310 to bend. Therefore, when the width L of the buffer protection structure portion 321 in the central region 311 of the hollow region 310 is greater than the width L of the buffer protection structure portion 321 in the edge region 312 of the hollow region 310, the spacing D between two adjacent buffer protection structure portions 321 in the central region 311 along the first direction X is also greater than the spacing D between two adjacent buffer protection structure portions 321 in the edge region 312, so that the wider buffer protection structure portions 321 in the central region 311 have a wider spacing. In this way, the hollow region 310 is easier to form a full and rounded teardrop shape when bent.

[0067] In yet another embodiment, Figure 10 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 10 Along the first direction X, the distance D between two adjacent buffer protection structure portions 321 in the center region 311 of the hollow region 310 is greater than the distance D between two adjacent buffer protection structure portions 321 in the edge region 312 of the hollow region 310, and the width L of the buffer protection structure portion 321 decreases sequentially along the direction from the center region 311 of the hollow region 310 to the edge region 312 of the hollow region 310.

[0068] Specifically, such as Figure 10As shown, along the first direction X, two adjacent buffer protection structure portions 321 in the central region 311 have a larger spacing D, while two adjacent buffer protection structure portions 321 in the edge region 312 have a smaller spacing D. At the same time, along the direction from the central region 311 of the hollow region 310 to the edge region 312 of the hollow region 310, the width L of the buffer protection structure portions 321 decreases sequentially. That is, from the central region 311 to the two edge regions 312, the width L of the buffer protection structure portions 321 gradually decreases, so that the wider buffer protection structure portions 321 correspond to a wider spacing. In this way, the hollow region 310 is more likely to form a full and rounded water droplet shape when bent, and the width changes of multiple buffer protection structure portions 321 form a gradient structure, making the formed water droplet shape fuller and rounder.

[0069] Optional, Figure 11 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 1 and Figure 11 The buffer protection structure 320 includes a plurality of buffer protection structure portions 321, which are arranged along a first direction X. The first direction X intersects the extension direction of the bending axis a. Along the first direction X, the distance D between two adjacent buffer protection structure portions 321 in the center region 311 of the hollow region 310 is less than the distance D between two adjacent buffer protection structure portions 321 in the edge region 312 of the hollow region 310. The width L of the buffer protection structure portion 321 in the center region 311 of the hollow region 310 is less than the width L of the buffer protection structure portion 321 in the edge region 312 of the hollow region 310.

[0070] Specifically, such as Figure 11As shown, the buffer protection structure 320 includes multiple buffer protection structure portions 321, which are arranged along the first direction X. Each buffer protection structure portion 321 includes a portion near the center of the hollowed-out area 310 and a portion near the edge of the hollowed-out area 310. Specifically, each buffer protection structure portion 321 includes a portion located in the central region 311 of the hollowed-out area 310 and a portion located in the edge region 312 of the hollowed-out area 310, with the edge region 312 located on both sides of the central region 311. Furthermore, in the first direction X, the width L of the buffer protection structure portion 321 located in the central region 311 is smaller than the width L of the buffer protection structure portion 321 located in the edge region 312. This reduces the radius of the water droplets formed when the multiple buffer protection structure portions 321 are bent, and when the overall shape of the water droplets is elongated… If the distance between two adjacent buffer protection structure portions 321 in the edge region 312 is small, that is, the spacing D between the wider buffer protection structure portions 321 in the edge region 312 is too small, the hollow region 310 will not be easy to bend. Therefore, when the width L of the buffer protection structure portion 321 in the center region 311 of the hollow region 310 is set to be smaller than the width L of the buffer protection structure portion 321 in the edge region 312 of the hollow region 310, the spacing D between two adjacent buffer protection structure portions 321 in the center region 311 along the first direction X is set to be smaller than the spacing D between two adjacent buffer protection structure portions 321 in the edge region 312, so that the wider buffer protection structure portions 321 in the edge region 312 have a wider spacing. In this way, the hollow region 310 is easier to form an elongated teardrop shape when bent.

[0071] In yet another embodiment, Figure 12 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 12 Along the first direction X, the distance D between two adjacent buffer protection structure portions 321 in the center region 311 of the hollow region 310 is greater than the distance D between two adjacent buffer protection structure portions 321 in the edge region 312 of the hollow region 310, and the width L of the buffer protection structure portion 321 increases sequentially along the direction from the center region 311 of the hollow region 310 to the edge region 312 of the hollow region 310.

[0072] Specifically, such as Figure 12As shown, along the first direction X, adjacent buffer protection structure portions 321 in the central region 311 have a small gap, while adjacent buffer protection structure portions 321 in the edge region 312 have a large gap. At the same time, along the direction from the central region 311 of the hollow region 310 to the edge region 312 of the hollow region 310, the width L of the buffer protection structure portions 321 gradually increases, that is, from the central region 311 to the two edge regions 312, the width L of the buffer protection structure portions 321 gradually increases, so that the wider buffer protection structure portions 321 in the edge region 312 correspond to a wider gap. In this way, the hollow region 310 is more likely to form an overall elongated teardrop shape when bent, and the width change of multiple buffer protection structure portions 321 forms a gradient structure, which further reduces the radius of the teardrop and elongates the overall shape of the teardrop.

[0073] The above embodiments illustrate the case where the buffer protection structure 320 includes multiple buffer protection structure portions 321. In addition, the buffer protection structure 320 may also include multiple buffer protection layers.

[0074] Optional, Figure 13 This is a schematic diagram of another buffer protection structure provided in an embodiment of the present invention. See also... Figure 13 The buffer protection structure 320 includes at least a first buffer protection layer 322 and a second buffer protection layer 323. The first buffer protection layer 322 is located on the side of the second buffer protection layer 323 that is close to the first support layer 20. The elastic modulus of the first buffer protection layer 322 is greater than the elastic modulus of the second buffer protection layer 323.

[0075] Specifically, such as Figure 13 As shown, a buffer protection structure 320 is also provided in the hollow area of ​​the second support layer 30. The buffer protection structure 320 includes multiple buffer protection layers, including at least a first buffer protection layer 322 and a second buffer protection layer 323 stacked together. The surface of the first buffer protection layer 322 closest to the first support layer 20 is bonded to the first support layer 20 through an adhesive layer 340, and the surface of the first buffer protection layer 322 furthest from the first support layer 20 is bonded to the second buffer protection layer 323 through an adhesive layer. Since the buffer protection layer furthest from the first support layer 20 experiences the greatest tensile stress when the hollow area 310 is bent, by setting the elastic modulus of the first buffer protection layer 322 to be greater than that of the second buffer protection layer 323, that is, along the direction from the first support layer 20 to the second support layer 30, the elastic modulus of the multiple buffer protection layers gradually decreases, making the elastic modulus of the outermost buffer protection layer the smallest. In this way, impact energy can be better absorbed, and the impact resistance of the hollow area 310 can be improved.

[0076] It should be noted that, Figure 13 The example only illustrates that the first support layer 20 is bonded to the first buffer protective layer 322 by the adhesive layer 340. In other embodiments, different film layers can be bonded by other means.

[0077] Optional, Figure 14 yes Figure 1 A simplified diagram of another cross-sectional structure along the AA' direction is shown below. Figure 14 The display module also includes a buffer layer 110, which is located on the side of the first support layer 20 away from the second support layer 30. The elastic modulus of the buffer layer 110 is less than or equal to the elastic modulus of the buffer protection structure 320. Specifically, as... Figure 14 As shown, the display module also includes a buffer layer 110, which is located between the display panel 10 and the first support layer 20. The material of the buffer layer 110 can be PI, PET or PU, etc. By setting the elastic modulus of the buffer 110 to be less than or equal to the elastic modulus of the buffer protection structure 320, the impact resistance of the bending area of ​​the display module can be improved.

[0078] Optional, Figure 15 yes Figure 1 A simplified diagram of another cross-sectional structure along the AA' direction is shown below. Figure 15 The first support layer 20 is also provided with a half-carved area 220 on the side close to the second support layer 30. The half-carved area 220 is located in the bending area AA. Along the thickness direction Y of the second support layer 30, the half-carved area 220 penetrates part of the first support layer 20, and the half-carved area 220 is staggered from the hollow area 310.

[0079] Specifically, such as Figure 15 As shown, a half-etched area 220 is also provided in the bending area AA of the first support layer 20. The half-etched area 220 is located on the side of the first support layer 20 near the second support layer 30. Along the thickness direction perpendicular to the second support layer, the half-etched area 220 is staggered from the hollow area 310. That is, the half-etched area 220 can be located on both sides of the hollow area 310 in the first support layer 20. Both sides of the half-etched area 220 include multiple grooves. Along the thickness direction of the first support layer 20, the multiple grooves penetrate part of the first support layer 20. In this way, by setting the half-etched area 220 on both sides of the first support layer 20 corresponding to the hollow area 310, the flatness of the surface of the first support layer 20 near the display panel is ensured, while the stress of the bending area AA of the display module is further reduced, and the bending performance of the bending area AA is improved.

[0080] Optional, Figure 16 yes Figure 1 A simplified diagram of another cross-sectional structure along the AA' direction is shown below. Figure 16The second support layer 30 also includes a bottom support layer 330, which is disposed in the hollow area 310 and located on the side of the buffer protection structure 320 away from the first support layer 20. The elastic modulus of the bottom support layer 330 is greater than that of the buffer protection structure 320. Specifically, as shown... Figure 16 As shown, a bottom support layer 330 is also provided on the side of the buffer protection structure 320 away from the first support layer 20. The bottom support layer 330 provides support and protection for the buffer protection structure 320. At the same time, by setting the elastic modulus of the bottom support layer 330 to be greater than that of the buffer protection structure 320, the impact resistance of the display module is improved.

[0081] Optional, see below Figure 16 The elastic modulus of the first support layer 20 is less than that of the second support layer 30. Specifically, the first support layer 20 can be made of a metal alloy with a lower elastic modulus, while the second support layer 30 can be made of a metal alloy with a higher elastic modulus. This can further improve the impact resistance of the bending area of ​​the display module.

[0082] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 17 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Figure 17 As shown, the display device includes the display module 01 in the above embodiments. This display device includes the display module 01 of any embodiment of the present invention; therefore, the display device provided by the embodiments of the present invention possesses the corresponding beneficial effects of the display module 01 provided by the embodiments of the present invention, which will not be elaborated further here. For example, the display device can be an electronic device such as a mobile phone, computer, smart wearable device (e.g., smartwatch), and in-vehicle display device; the embodiments of the present invention do not limit this.

[0083] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display module, characterized by The bending region can be bent around a bending axis, and the non-bending region cannot be bent around the bending axis. The display module further comprises a display panel, a first support layer and a second support layer; The first support layer and the second support layer are located on the non-light-emitting side of the display panel, and the first support layer is located on the side of the second support layer close to the display panel; The surface of the first support layer close to the display panel is a complete surface; The bending region of the second support layer is provided with a hollow region, and the hollow region penetrates the second support layer in the thickness direction of the second support layer; The hollow region is provided with a buffer protection structure, and the elastic modulus of the buffer protection structure is greater than the elastic modulus of the second support layer; The side of the first support layer close to the second support layer is further provided with a half-etching region; the half-etching region is located in the bending region, and the half-etching region penetrates part of the first support layer in the thickness direction of the second support layer, and the half-etching region is arranged staggered with the hollow region.

2. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts; A plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis; Along the first direction, the spacing between adjacent two buffer protection structure parts in the center region of the hollow region is less than the spacing between adjacent two buffer protection structure parts in the edge region of the hollow region.

3. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts; A plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis; Along the first direction, the spacing between adjacent two buffer protection structure parts in the center region of the hollow region is greater than the spacing between adjacent two buffer protection structure parts in the edge region of the hollow region.

4. The display module of claim 2 or 3, wherein, Along the first direction, the widths of a plurality of buffer protection structure parts are the same.

5. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts; A plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis; Along the first direction, the widths of a plurality of buffer protection structure parts are different, and the width of the buffer protection structure part located in the center region of the hollow region is greater than the width of the buffer protection structure part located in the edge region of the hollow region.

6. The display module of claim 5, wherein, Along the direction from the center region of the hollow region to the edge region of the hollow region, the widths of the buffer protection structure parts decrease in turn.

7. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts; A plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis; Along the first direction, the widths of a plurality of buffer protection structure parts are different, and the width of the buffer protection structure part located in the center region of the hollow region is less than the width of the buffer protection structure part located in the edge region of the hollow region.

8. The display module of claim 7, wherein, The width of the buffer protection structure parts increases in sequence along the direction from the center region of the hollow region to the edge region of the hollow region.

9. The display module of claim 5 or 7, wherein, The distance between any two adjacent buffer protection structure parts in the first direction is the same.

10. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same.

11. The display module of claim 10, wherein, The distance between any two adjacent buffer protection structure parts in the first direction is the same.

12. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same.

13. The display module of claim 12, wherein, The distance between any two adjacent buffer protection structure parts in the first direction is the same.

14. The display module of claim 1, wherein, The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same.

15. The display module of claim 1, wherein, The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts.

16. The display module of claim 1, wherein, The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis.

17. The display module of claim 1, wherein, The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The buffer protection structure comprises a plurality of buffer protection structure parts. The plurality of buffer protection structure parts are arranged along a first direction, wherein the first direction intersects with the extension direction of the bending axis. The distance between any two adjacent buffer protection structure parts in the first direction is the same. The distance between any two adjacent buffer protection structure parts in the first direction is 18. A display device comprising: The display module of any one of claims 1-17.

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