WO2024026960A1

WO2024026960A1 - Protective cover plate, bonding fixture, display module and manufacturing method therefor

Info

Publication number: WO2024026960A1
Application number: PCT/CN2022/116122
Authority: WO
Inventors: 裴军强; 张琪
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2022-08-05
Filing date: 2022-08-31
Publication date: 2024-02-08
Also published as: CN115311944A; CN115311944B

Abstract

A protective cover plate (20), a bonding fixture (70), a display module (100) and a manufacturing method therefor. The display module (100) comprises the protective cover plate (20) and a display assembly (80) bonded to the protective cover plate (20). A cover plate wrinkle-structure is provided at a corner region of the surface of the protective cover plate (20) close to the display assembly (80), and a display assembly wrinkle-structure is provided at a corner region of the display assembly (80) so as to be engaged with the cover plate wrinkle-structure.

Description

Protective cover, laminating jig, display module and manufacturing method thereof

Technical field

The present application relates to the field of display technology, and in particular to a protective cover, a laminating jig, a display module and a manufacturing method thereof.

Background technique

In order to achieve a full-screen display, it is a common design to design the four sides of the display screen as curved displays. In order to further optimize the display effect of the full-screen display, the four corners of the display screen are also designed as curved surface displays. However, when the four corners of the display screen are also designed as curved displays, the flat flexible display panel needs to be attached to the cover plate with a Gaussian curved surface at the corners. During the process of attaching the flexible display panel to the cover plate, the flexible display The panel will form wrinkles with increasing volume at the corners. The increasing volume of wrinkles will increase the risk of stress concentration and cracking of the flexible display panel. Cracks in the flexible display panel will cause water and oxygen to intrude into the flexible display panel, thereby causing the flexible display panel to There is a risk of display failure at the corners.

Therefore, it is necessary to propose a technical solution to solve the problem of stress concentration during the lamination process of flexible display panels.

technical problem

The purpose of this application is to provide a protective cover, a laminating fixture, a display module and a manufacturing method thereof, so as to improve the stress concentration problem that occurs during the laminating process of the display assembly.

Technical solutions

In a first aspect, the present application provides a display module, which has a main display area, at least one first side curved surface area, at least one second side curved surface area, and at least one corner area. The first side curved surface area and one of the second side curved surface areas are respectively connected to adjacent two sides of one of the main display areas, at least one of the corner areas is connected to one of the main display areas, and one of the corner areas is connected to one of the main display areas. Connected between adjacent one of the first side curved surface areas and one of the adjacent second side curved surface areas, the display module includes a protective cover and a display component that is attached to the protective cover;

The surface of the protective cover close to the display component is provided with a cover pleat structure in the corner area, and the display component is provided with a display component pleat structure engaged with the cover pleat structure in the corner area.

In a second aspect, the present application also provides a protective cover for a display module, the protective cover having at least one first cover side curved surface area, at least one second cover side curved surface area, and at least one cover corner area , one of the cover plate corner areas is connected between an adjacent first cover plate side curved surface area and a second cover plate side curved surface area, and the protective cover plate includes:

The cover plate pleat structure is located on the fitting surface of the protective cover plate in the corner area of the cover plate.

In a third aspect, the application further provides a fitting jig, which has at least one first side support curved surface area, at least one second side support curved surface area, and at least one support corner curved surface area, and one of the support curved surface areas The corner curved surface area is connected between an adjacent first side supporting curved surface area and a second side supporting curved surface area. The fitting fixture includes:

The jig fold structure is located on the supporting surface of the fitting jig in the supporting corner curved surface area.

In a fourth aspect, this application also provides a method for manufacturing a display module, which method includes the following steps:

Provide a display component to be bonded, the display component to be bonded is in the shape of a flat plate;

A protective cover plate is provided, the protective cover plate has at least one first cover plate side curved surface area, at least one second cover plate side curved surface area and at least one cover plate corner area, and one of the cover plate corner areas is connected to an adjacent Between one of the first cover plate side curved surface areas and a second cover plate side curved surface area, the protective cover plate includes a cover plate pleated structure, and the cover plate pleated structure is located on the cover of the protective cover plate. The fitting surface in the corner area of the board;

A fitting jig is provided, the fitting jig has at least one first side support curved surface area, at least one second side support curved surface area and at least one support corner curved surface area, one of the support corner curved surface areas is connected to adjacent Between a first side support curved surface area and a second side support curved surface area, the fitting jig includes a jig fold structure, and the jig fold structure is located in the support corner curved surface area of the fitting jig. On the support surface, the fold structure of the fixture matches the fold structure of the cover plate;

Place the display component to be bonded on the support surface of the bonding jig;

The protective cover is placed on the display component to be bonded, so that the cover fold structure in the corner area of the cover plate corresponds to the jig fold structure in the support corner curved surface area, and the One of the first cover plate side curved surface areas corresponds to one of the first side support curved surface areas, and one second cover plate side curved surface area corresponds to a second side support curved surface area. Under the support of the fitting fixture, the The protective cover is pressed with the display component to be bonded. During the pressing process, the display component to be bonded is affected by the matching wrinkle structure of the jig and the wrinkle structure of the cover plate. Forming a display component pleated structure, the display component pleated structure is meshed with the fixture pleated structure and the cover pleated structure;

The laminating fixture is removed to obtain the display module.

beneficial effects

This application provides a protective cover, a laminating fixture, a display module and a manufacturing method thereof. The protective cover is used to set a cover fold structure on the laminating surface of the corner area of the cover, and the supporting corner curved surface of the laminating fixture is A jig fold structure is set on the supporting surface of the area. The jig fold structure matches the fold structure of the cover plate. The flat display component to be bonded is placed on the bonding jig, and the protective cover is placed on the display component to be bonded. The fold structure of the cover plate and the fold structure of the jig are set correspondingly. During the process of fitting the display component to be bonded with the protective cover, the matching fold structure of the cover plate and the fold structure of the jig jointly guide the display component to be bonded to form. The fold structure of the display component that is aligned with the fold structure of the cover plate and the fold structure of the fixture makes the shape of the fold structure of the display component controllable and stable, and improves the wrinkle structure of the display panel in traditional technology. The stress concentration problem caused by the development and increase will be improved, thereby improving the problems of cracking and corner failure caused by stress concentration.

Moreover, compared with the traditional technology where the fitting surface at the corner of the protective cover is a smooth Gaussian curved surface, the protective cover of this application is provided with a cover fold structure on the fitting surface of the corner area of the cover, so that the protective cover is The bonding area between the corner area and the display component to be bonded increases, which reduces the difference between the bonding area of the corner area of the display component to be bonded and the bonding area of the protective cover corresponding to the corner area of the cover, thereby reducing the Reduce the volume of the fold structure of the display component caused by the difference in fitting area between the fitting area of the display component to be fitted corresponding to the corner area and the fitting area of the protective cover corresponding to the corner area of the cover, further improving the cause of the fold structure The stress concentration problem and the failure problem at the corners.

Description of the drawings

Figure 1 is a schematic diagram of a display module according to an embodiment of the present application;

Figure 2 is a three-dimensional schematic view of the display component and protective cover of the display module shown in Figure 1;

Figure 3 is an exploded schematic diagram of the display component shown in Figure 2;

Figure 4 is an enlarged schematic diagram of the side of the protective cover close to the display assembly in Figure 2 at A1;

Figure 5 is an enlarged schematic view of the side of the component close to the protective cover shown in Figure 2 at A2;

Figure 6 is an enlarged schematic diagram of the side of the component away from the protective cover shown in Figure 2 at A2;

Figure 7 is a schematic cross-sectional view along the I-I tangent line of the display module shown in Figure 1;

Figure 8 is a schematic cross-sectional view along the II-II tangent line of the fold structure of the cover plate of the display module and the fold structure of the display component shown in Figure 1;

Figure 9 is a rainbow diagram of the Gaussian curvature distribution when the fitting surface of the traditional protective cover at the corner is a Gaussian surface;

Figure 10 is an enlarged schematic diagram of the protective cover of the display module in the corner area and the side close to the display component around the corner area according to another embodiment of the present application;

Figure 11 is an enlarged schematic diagram of the display component of the display module in the corner area and the side close to the protective cover of the corner area according to another embodiment of the present application;

Figure 12 is another embodiment of the present application showing a cross-section of the module along the thickness direction of the corner area in the direction where the corner area extends from the connection between the first side curved surface area and the corner area to the connection between the second side curved surface area and the corner area. schematic diagram;

Figure 13 shows another embodiment of the present application showing the thickness direction of the display module in the main display area, the fold structure of the cover plate and the fold structure of the display component in the corner area extending from the connection between the main display area and the corner area to the corner area away from the main display area. Schematic cross-section along the thickness direction of the corner area in the direction of the edge;

Figure 14 is an enlarged schematic diagram of the protective cover of the display module in the corner area and the side close to the display component around the corner area according to another embodiment of the present application;

Figure 15 is an enlarged schematic diagram of the display component of the display module in the corner area and the side close to the protective cover of the corner area according to another embodiment of the present application;

Figure 16 is another embodiment of the present application showing a cross-section of the module along the thickness direction of the corner area in the direction where the corner area extends from the connection between the first side curved surface area and the corner area to the connection between the second side curved surface area and the corner area. schematic diagram;

Figure 17 is a three-dimensional schematic view of a planar display panel to be bonded, a planar first functional unit to be bonded, and a planar second functional unit to be bonded;

Figure 18 is a schematic cross-sectional view of a flat display component to be bonded;

Figure 19 is a three-dimensional schematic view of the protective cover according to the embodiment of the present application;

Figure 20 is a partial enlarged schematic diagram of the protective cover shown in Figure 19 at A3;

Figure 21 is a three-dimensional schematic view of the fitting jig according to the embodiment of the present application;

Figure 22 is a partial enlarged schematic view of the laminating jig shown in Figure 21 at position A4.

Embodiments of the invention

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of this application.

Please refer to FIG. 1 , which is a schematic diagram of a display module according to an embodiment of the present application. The display module 100 has a main display area 100a, at least one first side curved surface area 100b, at least one second side curved surface area 100c and at least one corner area 100d. A corner area 100d is connected between an adjacent first side curved surface area 100b and a second side curved surface area 100c. An adjacent first side curved surface area 100b and a second side curved surface area 100c are respectively connected to adjacent two sides of a main display area 100a, and at least one corner area 100d is connected to a main display area 100a.

Specifically, in this embodiment, the display module 100 has one main display area 100a, two first side curved surface areas 100b, two second side curved surface areas 100c, and four corner areas 100d. The main display area 100a, the two first side curved surface areas 100b, the two second side curved surface areas 100c and the four corner areas 100d are all used for display.

The main display area 100a is flat, but is not limited to this, and the main display area 100a may also be curved. The main display area 100a has opposite first and third sides and opposite second and fourth sides. The first side of the main display area 100a is adjacent to the second side and the fourth side. The main display area 100a has a third side. The third side is also adjacent to the second side and the fourth side.

One first side curved surface area 100b is connected to the first side of the main display area 100a, and the other first side curved surface area 100b is connected to the third side of the main display area 100a. Therefore, the two first side curved surface areas 100b are respectively connected to Opposite sides of the main display area 100a. The two first side curved surface areas 100b are both in the shape of curved surfaces, but are not limited thereto. The two first side curved surface areas 100b may also be in the shape of a plane.

One second side curved surface area 100c is connected to the second side of the main display area 100a, and the other second side curved surface area 100c is connected to the fourth side of the main display area 100a. Therefore, the two second side curved surface areas 100c are respectively connected to Opposite sides of the main display area 100a. The two second side curved surface areas 100c are also in the shape of curved surfaces, but are not limited thereto. The two second side curved surface areas 100c may also be in the shape of a plane.

Each corner area 100d is connected between an adjacent first side curved surface area 100b and a second side curved surface area 100c and is connected to the main display area 100a. The corner area 100d is curved, and the curved surface is spherical.

Please refer to FIG. 2 , which is a three-dimensional schematic diagram of the display component and the protective cover of the display module shown in FIG. 1 . The display module 100 includes a display component 80 and a protective cover 20 attached to the display component 80 .

In this embodiment, the protective cover 20 is located on the light emitting side of the display component 80 to protect the display component 80 . The protective cover 20 is a transparent four-curved cover. The protective cover 20 is a glass-based cover, but is not limited thereto. The protective cover 20 may also include a transparent polymer cover, or the protective cover 20 may also include ultra-thin glass.

The surface of the protective cover 20 away from the display component 80 in the corner area 100d includes a smooth curved surface, for example, a Gaussian curved surface, so that the display module 100 has a smooth appearance, thereby improving user experience.

The protective cover 20 has the same thickness in the main display area 100a, the first side curved surface area 100b and the second side curved surface area 100c.

Please refer to Figure 3, which is an exploded schematic diagram of the display component shown in Figure 2. The display component 80 has the same thickness in the main display area 100a, the first side curved surface area 100b and the second side curved surface area 100c.

In this embodiment, the display assembly 80 includes a display panel 10 , a first functional unit 30 and a second functional unit 40 . The first functional unit 30 is disposed between the display panel 10 and the protective cover 20 . The second functional unit 40 is disposed between the display panel 10 and the protective cover 20 . on the side of the display panel 10 away from the protective cover 20 .

The display panel 10 is a flexible display panel. The display panel 10 includes a flexible substrate, a driving circuit layer, and a plurality of light emitting devices. The flexible substrate includes a polymer substrate, and the polymer substrate includes but is not limited to at least one of a polyimide layer and a polyethylene terephthalate layer. The driving circuit layer is arranged on the flexible substrate. The driving circuit layer includes a plurality of driving circuits. The driving circuits include thin film transistors, capacitors and other devices. A plurality of light-emitting devices are disposed on a side of the driving circuit layer away from the flexible substrate. The plurality of light-emitting devices include but are not limited to at least one of organic light-emitting diodes, quantum dot light-emitting diodes, inorganic light-emitting diodes, micro-light-emitting diodes, and sub-millimeter light-emitting diodes. kind.

Specifically, the display panel 10 is a flexible organic light-emitting diode display panel. The flexible organic light-emitting diode display panel includes a flexible substrate, a driving circuit layer, a light-emitting device layer and a film packaging layer that are stacked in sequence.

It can be understood that the display panel 10 may also include a touch layer integrated on the thin film encapsulation layer and a filter layer formed on the touch layer. The touch layer may include a self-capacitive touch unit or a mutual-capacitive touch unit, and the touch layer may also include an antenna unit. The filter layer is used to replace the traditional polarizer. The filter layer includes a color filter layer and a black matrix. The color filter layer includes multiple red photoresists, multiple blue photoresists, and multiple green photoresists.

The first functional unit 30 is a transparent optical adhesive layer, but is not limited thereto. The first functional unit 30 may also include two transparent optical adhesive layers and a functional layer such as a polarizer located between the two transparent optical adhesive layers.

The second functional unit 40 includes a backplane and a transparent optical adhesive layer located on the backplane. The transparent optical adhesive layer on the backplane is located on the side close to the display panel 10 . However, it is not limited to this. The second functional unit 40 may also include other Functional layer.

Please refer to Figure 4, Figure 5, Figure 6, Figure 7 and Figure 8 at the same time. Figure 4 is an enlarged schematic diagram of the side of the protective cover close to the display component in Figure 2 at A1. Figure 5 is an enlarged schematic diagram of the side of the protective cover close to the display component in Figure 2. An enlarged schematic view of one side of the cover plate at A2. Figure 6 is an enlarged schematic view of the side of the display module away from the protective cover plate at A2 in Figure 2. Figure 7 is a tangent line I-I along the display module shown in Figure 1. Figure 8 is a schematic cross-sectional view along the II-II tangent line of the fold structure of the display module cover and the fold structure of the display component shown in Figure 1.

In this embodiment, the surface of the protective cover 20 close to the display component 80 is provided with a cover pleated structure 201 in the corner area 100d, and the display component 80 is provided with a display component pleated structure 801 that engages with the cover pleated structure 201 in the corner area 100d. .

As shown in FIGS. 4 and 7 , the protective cover 20 includes a corner fitting curved surface 20 a on the side of the corner area 100 d close to the display assembly 80 , and the thickness of the protective cover 20 at the location of the corner fitting curved surface 20 a is equal to that of the protective cover. 20 in the thickness of the main display area 100a, the corner fitting curved surface 20a is a smooth curved surface, and the cover pleat structure 201 is disposed on the corner fitting curved surface 20a and protrudes and/or recesses relative to the corner fitting curved surface 20a.

As shown in Figures 5, 6 and 7, the display component 80 includes a display component corner portion 802 in the corner area 100d. The thickness of the display component corner portion 802 is equal to the thickness of the display component 80 in the main display area 100a. The display component corner portion 802 To smooth the curved surface, the display component wrinkle structure 801 is disposed on the display component corner 802 and protrudes and/or is recessed relative to the display component corner 802 .

During the bonding process between the protective cover 20 and the display component 80 before being bonded, the cover wrinkle structure 201 on the protective cover 20 guides the portion where the display component 80 and the cover wrinkle structure 201 are bonded to form a shape. Controllable and stable wrinkle structure 801 of the display component. Correspondingly, the display panel 10 in the display component 80 will also form a controllable and stable wrinkle structure in the corner area, improving the wrinkle structure at the corners of the display panel in traditional technology. The problem of stress concentration caused by continuous development and increase during the bonding process will be improved, thereby improving the problems of cracking and corner failure caused by stress concentration.

It should be noted that "occlusion" in this application refers to the direct contact between the two interlocking parts through the complementary protruding structure and the indented structure.

In this embodiment, at least part of the cover fold structure 201 is located at the edge of the corner area 100d away from the main display area 100a, so that the side of the protective cover 20 close to the display assembly 80 and located far away from the corner area 100d of the protective cover 20 The edge of the main display area 100a includes wavy segments; correspondingly, due to the guiding effect of the cover fold structure 201, at least part of the display assembly fold structure 801 is located in the corner area 100d away from the edge of the main display area 100a, so that the display assembly 80 is in the corner area The edge of 100d away from the main display area 100a includes wavy segments. The wave segments include wave crests and/or wave troughs.

In traditional technology, when the display component and the protective cover are bonded together, wrinkles with a larger amplitude are more likely to occur at the edge of the corner area away from the main display area. In view of this, the display module of the embodiment of the present application uses at least part of the cover pleated structure 201 to be located at the edge of the corner area 100d away from the main display area 100a, so as to guide at least part of the display component pleated structure 801 to be located at the corner during the bonding process. The area 100d is far away from the edge of the main display area 100a, and while adapting to the wrinkle structure formation process of the display component, the display component 80 is guided to form controllable and stable wrinkles at the edge of the corner area 100d away from the main display area 100a.

Specifically, as shown in Figures 4 and 8, the cover fold structure 201 extends from the connection between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a; correspondingly, as shown in Figures 5 and 6 As shown in FIG. 8 , the display component fold structure 801 extends from the connection between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a.

In traditional technology, when the display component and the protective cover are bonded before bonding, it is easy to form a wrinkle structure extending from the connection between the main display area and the corner area to the edge of the corner area away from the main display area. In view of this, the display module 100 of the embodiment of the present application extends through the cover fold structure 201 from the connection between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a to guide the display component fold structure 801 Extending from the connection between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a, while adapting to the wrinkle formation process on the display component 80, it can better guide the display component 80 to form a controllable and stable shape. Component pleat structure 801 is shown.

It can be understood that the cover fold structure 201 can also extend from any position between the connection between the main display area 100a and the corner area 100d and the edge of the corner area 100d away from the main display area 100a, to the corner area 100d away from the main display area 100a. correspondingly, the display component fold structure 801 can extend from any position between the connection between the main display area 100a and the corner area 100d and the edge of the corner area 100d away from the main display area 100a to the corner area 100d away from the main display area 100a the edge of.

In addition, the extension direction of the cover fold structure 201 can also be the same as the extension direction of the corner area 100d from the connection between the corner area 100d and the first side curved surface area 100b to the connection between the corner area 100d and the second side curved surface area 100c. The corresponding , the extension direction of the display component fold structure 801 is the same as the extension direction of the corner area 100d from the connection point between the corner area 100d and the first side curved surface area 100b to the connection point between the corner area 100d and the second side curved surface area 100c. For example, the cover pleated structure 201 extends from the connection between the corner area 100d and the first side curved surface area 100b to the connection between the corner area 100d and the second side curved surface area 100c. Correspondingly, the display component pleated structure 801 extends from the corner area 100d and the first side curved surface area 100c. The connection point of the side curved surface area 100b extends to the connection point of the corner area 100d and the second side curved surface area 100c.

In this embodiment, at least part of the pleating amplitude of the cover pleated structure 201 increases toward the edge of the corner area 100d away from the main display area 100a. Correspondingly, at least part of the pleating amplitude of the display assembly pleated structure 801 increases toward The direction closer to the corner area 100d and away from the edge of the main display area 100a increases gradually.

It can be understood that the pleating amplitude of the entire cover plate pleated structure 201 can increase toward the edge of the corner area 100d away from the main display area 100a. Correspondingly, the pleating amplitude of the entire display assembly pleated structure 801 can increase toward the corner area. 100d increases in the direction away from the edge of the main display area 100a; alternatively, the folding amplitude of a part of the cover pleated structure 201 can remain unchanged in the direction close to the corner area 100d away from the edge of the main display area 100a, and the other part of the cover pleated structure 201 can remain unchanged. A part of the pleating amplitude may increase toward the edge of the corner area 100d away from the main display area 100a. Correspondingly, the pleating amplitude of a part of the display component pleat structure 801 may increase toward the edge of the corner area 100d away from the main display area 100a. Alternatively, the pleating amplitude of another part of the pleated structure 801 of the display assembly may increase toward an edge closer to the corner area 100d and away from the main display area 100a.

In traditional technology, when the display component and the protective cover are bonded before bonding, wrinkles with a larger amplitude are more likely to occur at the edge of the corner area away from the main display area. In view of this, at least part of the folding amplitude of the cover fold structure 201 increases in a direction closer to the corner area 100d and away from the edge of the main display area 100a, so as to adapt to the wrinkle formation process on the display assembly 80 and at the same time better guide the display assembly 80 A display component wrinkle structure 801 with controllable and stable topography is formed.

In this embodiment, in the direction in which the corner area 100d extends from the connection between the first side curved surface area 100b and the corner area 100d to the connection between the second side curved surface area 100c and the corner area 100d, at least one part of the cover pleated structure 201 The pleating amplitude of the part continuously increases first and then decreases. The pleating amplitude of at least part of the pleated structure 801 of the display assembly continuously increases first and then decreases.

It should be noted that when the fold structure includes a convex structure, the folding amplitude of the convex structure is the convex height; when the fold structure includes an indented structure, the folding amplitude of the indented structure is the indentation depth.

In addition, the pleating amplitude of the cover pleated structure 201 is based on the corner fitting curved surface 20a. In other words, the greater the pleating amplitude of the cover pleated structure 201, the greater the pleating amplitude of the cover pleated structure 201 relative to the corner fitting curved surface 20a. The greater the protrusion height or indentation depth, conversely, the smaller the pleat amplitude of the cover pleated structure 201 is, the smaller the protrusion height or indentation depth of the cover pleated structure 201 relative to the corner fitting curved surface 20a is. The pleating amplitude of the display module pleated structure 801 is based on the display module corner 802 as a reference. The greater the pleating amplitude of the display module pleated structure 801, the display module pleated structure 801 as a whole will act as a whole relative to the display module corner 802. The greater the overall protruding height or indentation depth, and conversely, the smaller the folding amplitude of the display component pleat structure 801, the protruding height or The depth of indentation is smaller.

Specifically, as shown in FIGS. 4 and 8 , the cover fold structure 201 includes at least one indented structure L. The at least one indented structure L is indented in a direction away from the display assembly 80 . The protective cover 20 is in the indented structure L. The first thickness H1 at the location decreases in the direction closer to the edge of the corner area 100d away from the main display area 100a; at the same time, as shown in Figure 7, the connection between the first side curved surface area 100b and the corner area 100d in the corner area 100d In the direction extending to the connection between the second side curved surface area 100c and the corner area 100d, the first thickness H1 of the protective cover 20 at the position where a recessed structure L is located continuously first decreases and then increases.

For example, the cover pleated structure 201 includes three indented structures L that are indented and spaced apart relative to the corner fitting curved surface 20a. The protective cover 20 is located at the first position of one indented structure L of the cover pleated structure 201. The thickness H1 decreases toward the edge of the corner area 100d away from the main display area 100a, and the first thickness H1 of the protective cover 20 at the location of each recessed structure L of the cover fold structure 201 is smaller than the first thickness H1 of the protective cover 20 at The thickness of the main display area 100a; at the same time, in the direction in which the corner area 100d extends from the connection between the first side curved surface area 100b and the corner area 100d to the connection between the second side curved surface area 100c and the corner area 100d, the cover plate The first thickness H1 of each indented structure L of the pleated structure 201 (at position B in FIG. 7 ) continuously decreases and then increases.

In this embodiment, as shown in FIG. 8 , the second thickness H2 of the display component 80 at the position where the display component wrinkle structure 801 is located is constant. In other words, the second thickness H2 of the display component 80 at the position where the display component wrinkle structure 801 is located is unchanged. The second thickness H2 is uniform or hardly changes. Moreover, the second thickness H2 of the display component 80 at the position where the display component wrinkle structure 801 is located is also equal to or tends to be the same as the thickness of the display component 80 in the main display area 100a.

It should be noted that since the display panel 10 that constitutes the display assembly 80 is not compressible or stretchable, and the first functional unit 30 and the second functional unit 40 are attached to the display assembly 80 and the protective cover 20 There will be no obvious stretching or compression during the lamination process, and the display panel 10, the first functional unit 30 and the second functional unit 40 will not change before and after lamination, so that the display assembly 80 formed after lamination will wrinkle in the display assembly. The second thickness H2 at the location of the structure 801 is equal to or tends to be the same as the thickness of the display component 80 before lamination.

In this embodiment, as shown in FIGS. 4 and 7 , at least part of the cover fold structure 201 is located in the corner area 100d and extends from the connection between the corner area 100d and the first side curved surface area 100b to the corner area 100d and the second side curved surface. The middle area of the connection between the area 100c; correspondingly, as shown in Figures 5, 6 and 7, at least part of the fold structure 801 of the display assembly is located in the corner area 100d and extends from the connection between the corner area 100d and the first side curved surface area 100b to The middle area where the corner area 100d and the second side curved surface area 100c are connected.

It should be noted that, as shown in Figure 9, it is a rainbow diagram of the Gaussian curvature distribution when the fitting surface of the traditional protective cover at the corner is a Gaussian curved surface. The traditional protective cover includes a flat portion S0, a first side curved portion S1, a second side curved portion S2, and a cover corner portion S3. The first side curved portion S1 and the second side curved portion S2 are connected to the adjacent flat portion S0. On both sides, the cover corner portion S3 is connected between the first side curved portion S1 and the second side curved portion S2. The bonding surface of the cover corner S3 has a first bonding area D1, a second bonding area D2, a third bonding area D3, a fourth bonding area D4, a fifth bonding area D5 and a sixth bonding area. D6, between the first bonding area D1, the second bonding area D2, the third bonding area D3, the fourth bonding area D4, the fifth bonding area D5 and the sixth bonding area D6 and the flat part S0 The distance increases.

The Gaussian curvature distribution of the first to sixth bonding areas D1 to D6 is as follows: the first bonding area D1 is blue, the second bonding area D2 is cyan, the third bonding area D3 is green, and the fourth bonding area D3 is green. The bonding area D4 is yellow, the fifth bonding area D5 is red, and the sixth bonding area D6 is pink. Correspondingly, the Gaussian curvatures of the first bonding area D1 to the sixth bonding area D6 increase gradually. Moreover, the sixth bonding area D6 is located in the direction in which the cover corner S3 extends from the connection between the first side curved surface S1 and the cover corner S3 to the connection between the second side curved surface S2 and the cover corner S3 . The middle area of the bonding surface of the cover corner S3.

When a traditional protective cover is bonded to a flat display component, the greater the Gaussian curvature of the bonding surface is, the easier it is for the flat display component to wrinkle after being bonded to the protective cover. The Gaussian curvature of the sixth bonding area D6 that is farthest from the flat portion S0 of the protective cover is larger, making it easier for the display component after bonding to wrinkle.

This embodiment shows that the module 100 is located at least partially in the middle area of the corner area 100d through the cover fold structure 201 from the connection between the corner area 100d and the first side curved surface area 100b to the connection between the corner area 100d and the second side curved surface area 100c. , the Gaussian curvature of the middle area where the cover fold structure 201 is provided is reduced, which is beneficial to guiding the display assembly 80 to form a display assembly fold structure 801 with smaller fold width and smaller volume in the middle area.

In this embodiment, please continue to refer to FIGS. 4 to 7 simultaneously. The cover pleated structure 201 includes at least one cover pleated curved surface 201a. The display component pleat structure 801 is formed in the thickness direction of the display component 80, and the display component pleat structure 801 includes at least one display component pleat curved surface 801a and at least one display component pleat back surface 801b. At least one cover pleated curved surface 201a, at least one display component pleated curved surface 801a, and at least one display component pleated back surface 801b are all smooth arc-shaped curved surfaces.

The display component pleated structure 801 of the display module in the embodiment of the present application includes the display component pleated back surface 801b and the display component pleated curved surface 801a, so that the display component pleated structure 801 is pleated in a curved surface, which is beneficial to reducing the risk of the display component pleated structure 801 due to wrinkling. the stress produced.

It can be understood that the cover fold structure 201 may also include a planar fold surface, and correspondingly, the display assembly fold structure 801 may also include a planar fold surface.

As shown in FIG. 7 , at least one display component wrinkled curved surface 801a is located on the side of the display component wrinkled structure 801 close to the protective cover 20 , and at least one cover panel wrinkled curved surface 201a and at least one display component wrinkled curved surface 801a are at the corner of the display module 100 The area 100d is arranged in a one-to-one correspondence in the thickness direction. At least one cover fold curved surface 201a is fitted and engaged with at least one display component fold curved surface 801a. The surface profile of each display component fold curved surface 801a is consistent with that of a corresponding cover. The surface profiles of the plate corrugated curved surfaces 201a are the same.

As shown in FIGS. 6 and 7 , at least one display component pleated back surface 801 b is located on the side of the display component pleated structure 801 away from the protective cover 20 . In other words, at least one display component pleated back surface 801 b is located on the back surface of at least one display component pleated curved surface 801 a , at least one display component pleated back surface 801b and at least one display component pleated curved surface 801a are arranged in one-to-one correspondence in the thickness direction of the corner area 100d of the display component 80, and the pleating direction of each display component pleated back surface 801b is consistent with that of the corresponding display component. The pleating directions of the pleated curved surfaces 801a are the same.

It should be noted that if a display component folded curved surface 801a is a convex curved surface relative to the display component 80, then a display component folded curved surface 801a corresponding to a display component folded curved surface 801a is an indented curved surface relative to the display component 80; if If a display component's wrinkled curved surface 801a is a concave curved surface relative to the display component 80, then a display component's wrinkled curved surface 801a corresponding to a display component's wrinkled curved surface 801a is a convex curved surface relative to the display component 80.

The number of the cover pleated curved surface 201a, the display component pleated curved surface 801a and the display component pleated back surface 801b is the same. The number of the cover pleated curved surface 201a, the display component pleated curved surface 801a, and the display component pleated back surface 801b may be one, two, three, or more than three.

The greater the number of the cover plate pleated curved surfaces 201a, the greater the number of the display component pleated curved surfaces 801a and the display component pleated back surfaces 801b, so that the areas and wrinkle amplitudes of one display component pleated curved surface 801a and one display component pleated back surface 801b are larger. The smaller it is, the more beneficial it is to further reduce the stress caused by the folding of the display assembly's wrinkle structure 801, but it will also increase the manufacturing difficulty of forming the cover's wrinkle structure 201.

When the number of the cover plate pleated curved surfaces 201a is two or more, multiple cover plate pleated curved surfaces 201a are arranged at intervals, and the corner fitting curved surface 20a is between the two spaced cover plate pleated curved surfaces 201a. Correspondingly, there are multiple cover plate pleated curved surfaces 201a. The pleated curved surfaces 801a of the display components are arranged at intervals, and the pleated back surfaces 801b of the display components are also arranged at intervals. The pleated curved surfaces 801a of two adjacent display components and the pleated back surfaces 801b of two adjacent display components are display components. The surface of the corner portion 802 is formed such that a plurality of display element pleat curved surfaces 801a and a plurality of display element pleat back surfaces 801b are formed at intervals. It can be understood that at least two cover plate pleated curved surfaces 201a may also be in contact, so that at least two display component pleated curved surfaces 801a are continuously formed at the same time, at least two display component pleated back surfaces 801b are also continuously formed.

In this embodiment, as shown in FIGS. 4 , 7 and 8 , at least one cover fold curved surface 201 a includes at least one cover fold indented curved surface, and the cover fold indented curved surface is indented in a direction away from the display assembly 80 ; As shown in Figures 5, 7 and 8, at least one display component folded curved surface 801a includes at least one display component folded convex curved surface, and the display component folded convex curved surface protrudes in a direction close to the protective cover 20, and at least one display component The pleat convex curved surface is engaged with at least one cover plate pleat indented curved surface one-to-one.

Specifically, please refer to Figures 4 and 7 at the same time. When a cover pleated structure 201 includes three indented structures L that are indented relative to the corner fitting curved surface 20a and are arranged at intervals, a cover pleated structure 201 includes three intervals. Each recessed structure L includes a cover pleated curved surface 201a. Between two adjacent cover pleated curved surfaces 201a is a corner fitting curved surface 20a. The protective cover 20 is recessed. The first thickness H1 at the location of the structure L is smaller than the thickness of the protective cover 20 in the main display area 100a, so that the first thickness H1 of the protective cover 20 at the location of the folded indented curved surface of the cover is smaller than the thickness of the protective cover 20 at the main display area 100a. The thickness of the display area 100a.

The three spaced cover plate fold curved surfaces 201a include a first cover plate folded indented curved surface 201a1, a second cover plate folded indented curved surface 201a2 and a third cover plate folded indented curved surface 201a3. The second cover plate folded indented curved surface 201a2 is located at Between the first cover plate folded indented curved surface 201a1 and the third cover plate folded indented curved surface 201a3, the first cover plate folded indented curved surface 201a1, the second cover plate folded indented curved surface 201a2 and the third cover plate folded indented curved surface 201a3 are all recessed in the direction away from the display component 80.

The second cover plate fold indented curved surface 201a2 is located in the middle area of the corner area 100d extending from the connection between the corner area 100d and the first side curved surface area 100b to the connection between the corner area 100d and the second side curved surface area 100c, and the second cover plate wrinkles The indented curved surface 201a2 extends from the connection between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a. The second cover fold indented curved surface 201a2 has a second indented surface.

The first cover plate fold indented curved surface 201a1 and the third cover plate folded indented curved surface 201a3 are respectively symmetrically arranged on opposite sides of the second cover plate folded indented curved surface 201a2. The cover fold recessed curved surface 201a3 also extends from the connection between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a. The first cover fold recessed curved surface 201a1 has a first recessed surface. The cover fold indented curved surface 201a3 has a third indented surface, the area of the first indented surface is equal to the area of the third indented surface, and the area of the second indented surface is greater than the area of the third indented surface.

It can be understood that the area of the first recessed surface and the area of the third recessed surface may also be different, and the area of the second recessed surface may also be equal to the area of the third recessed surface.

Please refer to Figure 5, Figure 7 and Figure 8 at the same time. The display component pleated structure 801 includes three spaced display component pleated curved surfaces 801a. The three spaced display component pleated curved surfaces 801a are located on the display component 80 in the corner area 100d close to the protective cover. One side of the board 20 protrudes toward the direction close to the protective cover 20. Three spaced display component wrinkled curved surfaces 801a include a first display component wrinkled convex curved surface 801a1, a second display component wrinkled convex curved surface 801a2, and a third display component. The wrinkled convex curved surface 801a3 and the second display component wrinkled convex curved surface 801a2 are located between the first display component wrinkled convex curved surface 801a1 and the third display component wrinkled convex curved surface 801a3. The first display component wrinkled convex curved surface 801a1 and the second display component have a wrinkled convex curved surface 801a3. The folded convex curved surface 801a2 of the display component and the folded convex curved surface 801a3 of the third display component both protrude toward the direction close to the protective cover 20 .

The second display component wrinkle convex curved surface 801a2 is located in the middle area of the corner area 100d extending from the connection between the corner area 100d and the first side curved surface area 100b to the connection between the corner area 100d and the second side curved surface area 100c, and the second display component is wrinkled The convex curved surface 801a2 extends from the connection point between the main display area 100a and the corner area 100d to the edge of the corner area 100d away from the main display area 100a. The second display component pleated convex curved surface 801a2 and the second cover panel pleated indented curved surface 201a2 are correspondingly arranged in the thickness direction of the corner area 100d and mesh with each other. The surface profile of the second display component's pleated protruding curved surface 801a2 is the same as the surface profile of the second cover's pleated recessed curved surface 201a2. The corrugated convex curved surface of the second display component has a second convex surface, and the area of the second convex surface is equal to the area of the second recessed surface.

The first display component's wrinkled convex curved surface 801a1 and the third display component's wrinkled convex curved surface 801a3 are respectively symmetrically arranged on opposite sides of the second display component's wrinkled convex curved surface 801a2, and both are separated from the main display area 100a and the corner area. The connection point 100d extends to the edge of the corner area 100d away from the main display area 100a. The first display component's wrinkled convex curved surface 801a1 and the first cover's wrinkled recessed curved surface 201a1 are arranged correspondingly in the thickness direction of the corner area 100d and mesh with each other. The surface profile of the first display component's wrinkled convex curved surface 801a1 is consistent with that of the first cover The surface contours of the corrugated indented curved surfaces 201a1 are the same, and the corrugated convex curved surface 801a1 of the first display component has a first convex surface, and the area of the first convex surface is equal to the area of the first indented surface. The wrinkled convex curved surface 801a3 of the third display component and the wrinkled indented curved surface 201a3 of the third cover plate are correspondingly arranged in the thickness direction of the corner area 100d and mesh with each other. The surface profile of the wrinkled convex curved surface 801a3 of the third display component is consistent with that of the third cover plate. The surface contours of the wrinkled indented curved surfaces 201a3 are the same, and the wrinkled convex curved surface 801a3 of the third display component has a third convex surface, and the area of the third convex surface is equal to the area of the third indented surface.

Please refer to Figures 6 and 7 at the same time. The display component pleated structure 801 also includes three spaced apart display component pleated back surfaces 801b. The three spaced apart display component pleated back surfaces 801b are located on the display component 80 in the corner area 100d away from the protective cover 20. On one side, three spaced apart display component fold back surfaces 801b include the first display component fold recessed back surface 801b1, the second display component fold recessed back surface 801b2, and the third display component fold recessed back surface 801b3. The second display component fold recessed back surface 801b3 The recessed back surface 801b2 is located between the fold recessed back surface 801b1 of the first display component and the fold recessed back surface 801b3 of the third display component. The fold recessed back surface 801b1 of the first display component, the fold recessed back surface 801b2 of the second display component and the third display component The recessed back surface 801b3 of the component folds is recessed in a direction closer to the protective cover 20.

The folded back surface 801b2 of the second display component is located in the middle area of the corner area 100d extending from the connection between the corner area 100d and the first side curved surface area 100b to the connection between the corner area 100d and the second side curved surface area 100c, and the second display component is wrinkled The recessed back surface 801b2 is located on the back surface of the folded convex curved surface 801a2 of the second display component. The folded recessed back surface 801b1 of the first display component is located on the back surface of the convex curved surface 801a1 of the wrinkles of the first display component. The folded recessed back surface 801b3 of the third display component is located at the back surface of the folded convex curved surface 801a3 of the third display component.

In this embodiment, the second thickness H2 of the display component 80 at the location of the display component fold structure 801 is equal to the thickness of the display component 80 in the main display area 100a, so that the display component 80 protrudes from the first display component folds 801a1 to the third display component curved surface 801a1. The second thickness H2 at the location of the folded convex curved surface 801a3 of the display component is equal to the thickness of the display component 80 in the main display area 100a.

In the display module of the embodiment of the present application, the area of the first indented surface of the first cover fold indented curved surface 201a1 and the area of the third indented surface of the third cover plate folded indented curved surface 201a3 are both smaller than that of the second cover plate. The area of the second indented surface of the folded indented curved surface 201a2 is to reduce the Gaussian curvature of the middle area where the second cover plate folded indented curved surface 201a2 is located. Correspondingly, it is more conducive to reducing the curvature formed by the guide plate folded structure 201. Displays the pleated area of the component pleated structure 801.

It should be noted that in this embodiment, the cover fold curved surface 201a on the protective cover 20 in the display module is an indented curved surface, and the cover fold curved surface 201a is obtained by thinning the protective cover 20 .

In this embodiment, as shown in Figure 4, a first chamfer structure 20b is provided at the connection between the cover fold structure 201 and the corner fitting curved surface 20a. The first chamfer structure 20b is a smooth curved surface. The first chamfer structure 20b is tangent to the corner fitting curved surface 20a and the cover pleated structure 201 to achieve a smooth transition at the connection between the cover pleated structure 201 and the corner fitting curved surface 20a; correspondingly, as shown in Figures 5 and 6, A second chamfer structure 803 is provided at the connection between the corner part 802 of the display component and the pleated structure 801 of the display component. The second chamfer structure 803 is a smooth curved surface structure to realize the connection between the corner part 802 of the display component and the pleated structure 801 of the display component. smooth transition.

It should be noted that the first chamfering structure 20b is formed through a chamfering process along the connection between the cover pleated structure 201 and the corner fitting curved surface 20a, and a part of the first chamfering structure 20b is located on the cover pleated structure 201 superior. The second chamfer structure 803 is formed through a chamfering process along the connection between the display component corner 802 and the display component wrinkle structure 801 , and a part of the second chamfer structure 803 is located on the display component wrinkle structure 801 .

As shown in Figure 4, the connection between the cover fold structure 201 and the first chamfer structure 20b has a first U-shaped connection section 201b, and the opening of the first U-shaped connection section 201b faces the corner area 100d away from the edge of the main display area 100a. And extends to the edge of the corner area 100d away from the main display area 100a; there is a second U-shaped connection section 801c at the connection between the display component fold structure 801 and the second chamfer structure 803, and the opening of the second U-shaped connection section 801c faces the corner area 100d. Far away from the edge of the main display area 100a, and extending to the corner area 100d away from the edge of the main display area 100a, the second U-shaped connecting section 801c has the same shape as the first U-shaped connecting section 201b. The first U-shaped connecting section 201b and the second U-shaped connecting section 801c can both be symmetrical U-shaped sections, but are not limited thereto. The first U-shaped connecting section 201b and the second U-shaped connecting section 801c can also both be symmetrical U-shaped sections. Asymmetrical U-shaped segment.

Referring to FIG. 7 , the first functional unit 30 includes a first functional unit pleated structure 301 that engages with the cover pleated structure 201 in the corner area 100 d. The surface of the first functional unit pleated structure 301 that contacts the cover pleated structure 201 is relative to the first functional unit pleated structure 301 and the cover pleated structure 201 . A functional unit 30 protrudes. The surface where the first functional unit pleated structure 301 contacts the cover pleated structure 201 is the display component pleated curved surface 801a. The surface profile of the surface where the first functional unit pleated structure 301 contacts the cover pleated structure 201 is the same as The surfaces of the cover pleated structures 201 have the same surface profile.

The display panel 10 includes a display panel pleated structure 101 that is engaged with the first functional unit pleated structure 301 in the corner area 100d. The surface of the first functional unit pleated structure 301 that contacts the display panel pleated structure 101 is recessed relative to the first functional unit 30. The surface of the display panel wrinkle structure 101 in contact with the first functional unit wrinkle structure 301 protrudes relative to the display panel 10 . The surface profile of the surface of the first functional unit wrinkle structure 301 in contact with the display panel wrinkle structure 101 and the display panel wrinkle structure 101 are The surface profiles of the surfaces contacted by the first functional unit pleated structure 301 are the same.

The second functional unit 40 includes a second functional unit pleated structure 401 engaged with the display panel pleated structure 101 in the corner area 100d. The surface of the second functional unit wrinkle structure 401 in contact with the display panel wrinkle structure 101 is protruding relative to the second functional unit 40, the surface profile of the surface of the second functional unit wrinkle structure 401 in contact with the display panel wrinkle structure 101 and the display panel wrinkle structure 101 has the same surface profile as the surface in contact with the second functional unit pleated structure 401. The surface of the second functional unit pleated structure 401 away from the display panel 10 is the display component pleated backside 801b. The display component pleated backside 801b is relative to the inside of the second functional unit 40. trap.

Please refer to Figures 10, 11, 12 and 13. Figure 10 is an enlarged schematic diagram of the protective cover of the display module in the corner area and the side close to the display component around the corner area, according to another embodiment of the present application. Figure 11 This is an enlarged schematic diagram of the display component of the display module in another embodiment of the present application in the corner area and the side close to the protective cover around the corner area. Figure 12 is an enlarged view of the display module in the corner area from the first A schematic cross-sectional view along the thickness direction of the corner area in the direction from the connection between the side curved surface area and the corner area to the connection between the second side curved surface area and the corner area. Figure 13 is a display module in the main display area according to another embodiment of the present application. The cross-sectional schematic diagram of the thickness direction, the fold structure of the cover plate and the fold structure of the display assembly along the thickness direction of the corner area in the direction where the corner area extends from the connection between the main display area and the corner area to the edge of the corner area away from the main display area.

The display module of this embodiment is basically similar to the display module shown in FIG. 1 , and the similarities will not be repeated. The differences include that the cover fold structure 201 includes at least one protruding structure T, and at least one protruding structure T approaches. The direction of the display assembly 80 protrudes, and the third thickness H3 of the protective cover 20 at the location of the protruding structure T increases toward the direction near the corner area 100d away from the edge of the main display area 100a. At the same time, in the corner area 100d, from the first In the direction from the connection between the side curved surface area 100b and the corner area 100d to the connection between the second side curved surface area 100c and the corner area 100d, the third thickness H3 of the protective cover 20 at the position where the protruding structure T is located continuously increases first. then decrease.

In addition, when the cover fold structure 201 includes at least one protruding structure T, each protruding structure T includes a cover fold curved surface 201a, and each cover fold curved surface 201a is a cover fold convex curved surface. The curved surface protrudes in a direction close to the display component 80. The third thickness H3 of the protective cover 20 at the position of the cover fold protruding curved surface is the third thickness H3 of the protective cover 20 at the position of the protruding structure T. The protective cover The third thickness H3 of the plate 20 at the location of the protruding structure T is greater than the thickness of the protective cover 20 in the main display area 100a; at least one display component fold curved surface 801a includes at least one display component fold indented curved surface, the display component fold indented curved surface Facing inward direction away from the protective cover 20 , at least one cover fold convex curved surface meshes with at least one display component fold indented curved surface one-to-one.

Specifically, as shown in Figures 10 and 12, at least one cover fold curved surface 201a includes a first cover fold convex curved surface 201a4 and a second cover fold convex curved surface 201a5 arranged at intervals. The first cover fold convex curved surface 201a5. The curved surface 201a4 and the second cover fold protruding curved surface 201a5 protrude relative to the protective cover 20. The first cover fold protruding curved surface 201a4 and the second cover fold protruding curved surface 201a5 both protrude toward the direction close to the display assembly 80. A cover fold convex curved surface 201a4 and a second cover fold convex curved surface 201a5 are respectively symmetrically arranged in the corner area 100d and extend from the connection between the first side curved surface area 100b and the corner area 100d to the second side curved surface area 100c and the corner area. Opposite sides of the 100d junction in the middle.

As shown in Figures 11 and 12, at least one display component wrinkled curved surface 801a includes a first display component wrinkled indented curved surface 801a4 and a second display component wrinkled indented curved surface 801a5 arranged at intervals. The first display component wrinkled indented curved surface 801a4 and The folded indented curved surface 801a5 of the second display component is indented relative to the display component 80. The folded indented curved surface 801a4 of the first display component and the folded indented curved surface 801a5 of the second display component are indented in the direction away from the protective cover 20. The first display component The component fold indented curved surface 801a4 and the second display component fold indented curved surface 801a5 are respectively symmetrically arranged in the corner area 100d and extend from the connection between the first side curved surface area 100b and the corner area 100d to the connection between the second side curved surface area 100c and the corner area 100d. on opposite sides of the middle position. The folded indented curved surface 801a4 of the first display component and the first cover folded convex curved surface 201a4 are correspondingly arranged in the thickness direction of the corner area 100d of the display module 100 and mesh with each other. The folded indented curved surface 801a5 of the second display component and the second The cover fold protruding curved surfaces 201a5 are correspondingly arranged in the thickness direction of the corner area 100d of the display module 100 and mesh with each other.

In this embodiment, the differences also include: the surface in contact between the first functional unit wrinkle structure 301 and the cover wrinkle structure 201 is recessed relative to the first functional unit 30; The surface in contact with 101 protrudes relative to the first functional unit 30 , the surface in contact with the display panel wrinkle structure 101 and the first functional unit wrinkle structure 301 is recessed relative to the display panel 10 , and the display panel wrinkle structure 101 and the second functional unit wrinkle structure 401 The contact surface protrudes relative to the display panel 10 , and the surface of the second functional unit wrinkle structure 401 in contact with the display panel wrinkle structure 101 is recessed relative to the second functional unit 40 .

In the embodiment of the present application, the cover fold structure 201 of the protective cover 20 of the display module 100 protrudes toward the direction closer to the display assembly 80 , and the display assembly fold structure 801 of the display assembly 80 retracts away from the protective cover 20 .

Please refer to Figure 14, Figure 15 and Figure 16. Figure 14 is an enlarged schematic diagram of the protective cover of the display module in the corner area and the side close to the display component around the corner area, according to another embodiment of the present application. Figure 15 is an enlarged schematic diagram of the present application. Another embodiment of the display module shows an enlarged schematic diagram of the display component in the corner area and the side close to the protective cover around the corner area. Figure 16 is another embodiment of the present application showing the display module in the corner area from the first side curved surface area. A cross-sectional representation along the thickness direction of the corner area in a direction extending from the connection point of the corner area to the connection point between the second side curved surface area and the corner area.

The display module of this embodiment is basically similar to the display module shown in Figure 1, and the similarities will not be repeated. The differences include that in this embodiment, the cover fold structure 201 includes at least one protruding structure T and at least one The recessed structure L, at least one protruding structure T protrudes in the direction close to the display component 80, and at least one recessed structure L recesses in the direction away from the display component 80. The protective cover 20 is located at the first position of the recessed structure L. The thickness H1 decreases toward the edge of the corner area 100d away from the main display area 100a, and the third thickness H3 of the protective cover 20 at the position of the protruding structure T increases toward the edge of the corner area 100d away from the main display area 100a. , the first thickness H1 of the protective cover 20 at the position of the recessed structure L is smaller than the thickness of the protective cover 20 in the main display area 100a, and the third thickness H3 of the protective cover at the position of the protruding structure T is greater than the thickness of the protective cover 20 The thickness of the panel 20 in the main display area 100a; at the same time, in the direction in which the corner area 100d extends from the connection between the first side curved surface area 100b and the corner area 100d to the connection between the second side curved surface area 100c and the corner area 100d. , the third thickness H3 of the protective cover 20 at the position of the protruding structure T continuously increases first and then decreases, and the thickness of the protective cover 20 at the position of the recessed structure L first decreases and then increases.

It should be noted that when the cover fold structure 201 simultaneously includes a convex structure T protruding relative to the corner fitting curved surface 20a and an indented structure L recessed relative to the corner fitting curved surface 20a, the convex structure T and the indented structure L can be arranged at intervals or continuously on the corner fitting curved surface 20a.

In addition, when the cover fold structure 201 includes at least one protruding structure T and at least one indented structure L, each protruding structure T includes a cover fold convex curved surface, and the cover fold convex curved surface faces the surface close to the display assembly 80 direction protruding, each recessed structure L includes a cover fold recessed curved surface, the cover fold recessed curved surface is recessed in a direction away from the display assembly 80 , at least one cover fold convex curved surface and at least one cover fold recessed surface The curved surfaces are spaced apart from each other; at the same time, the plurality of display component fold curved surfaces include at least one display component fold convex curved surface and at least one display component fold recessed curve, and the display component fold recessed curve faces in the direction away from the protective cover 20 The folded convex curved surface of the display component protrudes in the direction close to the protective cover 20. At least one folded convex curved surface of the cover plate meshes with at least one display component folded concave curved surface one-to-one. At least one display component folded convex curved surface meshes with At least one cover fold indented curved surface is engaged one-to-one.

Specifically, as shown in Figures 14 and 16, the plurality of cover plate fold curved surfaces 201a include a first cover plate fold indented curved surface 201a1, a second cover plate folded indented curved surface 201a2, a third cover plate folded indented curved surface 201a3, The first cover plate fold convex curved surface 201a4 and the second cover plate fold convex curved surface 201a5, the second cover plate fold indented curved surface 201a2 is located between the first cover plate fold convex curved surface 201a4 and the second cover plate fold convex curved surface 201a5 During this period, the first cover fold indented curved surface 201a1 is located on the side of the second cover plate pleated convex curved surface 201a5 away from the second cover plate pleated indented curved surface 201a2, and the third cover plate pleated indented curved surface 201a3 is located on the first cover folded surface. The convex curved surface 201a4 is away from the side of the second cover folded indented curved surface 201a2. The first cover plate fold indented curved surface 201a1, the second cover plate folded indented curved surface 201a2, and the third cover plate folded indented curved surface 201a3 shown in Figure 14 are respectively different from the first cover plate folded indented curved surface 201a1 and the third cover plate folded indented curved surface 201a1 shown in Figure 4. The folded indented curved surface 201a2 of the second cover plate and the folded indented curved surface 201a3 of the third cover plate are the same and will not be described again here. The first cover plate fold convex curved surface 201a4 and the second cover plate fold convex curved surface 201a5 shown in Figure 14 are respectively the same as the first cover plate fold convex curved surface 201a4 and the second cover plate fold convex curved surface 201a5 shown in Figure 10, No further details will be given here.

As shown in Figures 15 and 16, the plurality of display component wrinkled curved surfaces 801a include a first display component wrinkled convex curved surface 801a1, a second display component wrinkled convex curved surface 801a2, a third display component wrinkled convex curved surface 801a3, and a first display component wrinkled convex curved surface 801a2. The folded indented curved surface 801a4 of the component and the folded indented curved surface 801a5 of the second display component, the second display component folded convex curved surface 801a2 are located between the folded indented curved surface 801a4 of the first display component and the folded indented curved surface 801a5 of the second display component. The folded convex curved surface 801a1 of a display component is located on the side of the folded indented curved surface 801a5 of the second display component away from the folded convex curved surface 801a2 of the second display component, and the wrinkled convex curved surface 801a3 of the third display component is located on the folded indented curved surface of the first display component. 801a4 is away from the side of the second display component fold protruding from the curved surface 801a2. The first display component's wrinkled convex curved surface 801a1, the second display component's wrinkled convex curved surface 801a2, and the third display component's wrinkled convex curved surface 801a3 in Figure 15 are respectively different from the first display component's wrinkled convex curved surface 801a1, The wrinkled convex curved surface 801a2 of the second display component and the wrinkled convex curved surface 801a3 of the third display component are the same, and will not be described again here. The folded indented curved surface 801a4 of the first display component and the folded indented curved surface 801a5 of the second display component in Figure 15 are respectively the same as the folded indented curved surface 801a4 of the first display component and the folded indented curved surface 801a5 of the second display component in Figure 11, No further details will be given here.

As shown in FIG. 16 , the first display component pleated convex curved surface 801a1 is arranged corresponding to and engages with the first cover pleated indented curved surface 201a1 in the thickness direction of the corner area 100d of the display module 100 . The second display component fold protruding curved surface 801a2 is disposed corresponding to and engaged with the second cover plate folded indented curved surface 201a2 in the thickness direction of the corner area 100d of the display module 100. The third display component pleated protruding curved surface 801a3 is arranged corresponding to and interlocking with the third cover pleated recessed curved surface 201a3 in the thickness direction of the corner area 100d of the display module. The first display component fold recessed curved surface 801a4 is disposed corresponding to and engaged with the first cover plate fold protruding curved surface 201a4 in the thickness direction of the corner area 100d of the display module 100. The second display component fold recessed curved surface 801a5 is disposed corresponding to and engaged with the second cover plate fold protruding curved surface 201a5 in the thickness direction of the corner area 100d of the display module 100.

In the embodiment of the present application, the cover fold structure 201 of the protective cover 20 of the display module 100 includes a recessed curved surface of the cover folds and a convex curved surface of the cover folds. Correspondingly, the fold structure of the display component includes a recessed curved surface of the cover folds. The display component pleat convex surface is engaged and the display component pleat indented surface is engaged with the cover pleat convex surface.

It should be noted that the recessed curved surfaces of the cover plate folds and the convex curved surfaces of the cover plate folds can be provided alternately as in this embodiment, or one or more recessed curved surfaces of the cover plate folds can be provided between two or more recessed curved surfaces of the cover plate folds. The cover plate folds are convex curved surfaces, or two or more cover plate folds convex curved surfaces set one or more cover plate folds indented curved surfaces. In the same way, the arrangement between the folded convex curved surface of the display component and the folded indented curved surface of the display component is not limited to being arranged alternately one by one.

In addition, this application also provides a method of manufacturing a display module. The manufacturing method of the display module includes the following steps:

S10: Provide a display component to be bonded, and the display component to be bonded is flat.

Specifically, please refer to FIG. 17 , which provides a planar display panel 50 to be bonded, a planar first functional unit 60 to be bonded, and a planar second functional unit 90 to be bonded. The display panel 50 to be bonded is For a flat flexible display panel, the first functional unit 60 to be bonded is a flat transparent optical adhesive layer, and the second functional unit 90 to be bonded includes a flat back plate and a transparent optical adhesive layer located on the surface of the back plate; The first functional unit 60 to be bonded is bonded to the light-emitting surface of the display panel 50 to be bonded, the second functional unit 90 to be bonded is bonded to the back of the light-emitting surface of the display panel 50 to be bonded, and The transparent optical adhesive layer bonded to the second functional unit 90 is in contact with the display panel 50 to be bonded, and a flat display component 110 to be bonded is obtained, as shown in FIG. 18 .

S20: Provide a protective cover. The protective cover has at least one first cover side curved surface area, at least one second cover side curved surface area, and at least one cover corner area. One cover corner area is connected to an adjacent one. Between the first cover plate side curved surface area and a second cover plate side curved surface area, the protective cover plate includes a cover plate fold structure, and the cover plate fold structure is located on the fitting surface of the protective cover plate in the corner area of the cover plate.

Specifically, as shown in Figures 19 and 20, Figure 19 is a three-dimensional schematic view of the protective cover according to an embodiment of the present application, and Figure 20 is a partially enlarged schematic view of the protective cover shown in Figure 19 at A3. The protective cover 20 has two first cover side curved surface areas 20d, two second cover side curved surface areas 20e, a cover plate middle area 20c and four cover panel corner areas 20f. The two first cover plate side curved surfaces are The area 20d is connected to the opposite first and second sides of a cover plate middle area 20c, and the two second cover plate side curved surface areas 20e are connected to the opposite third and fourth sides of a cover plate middle area 20c. The cover plate The first side of the middle area 20c is adjacent to the third and fourth sides of the cover middle area 20c. One cover middle area 20c is flat, two first cover side curved areas 20d and two second covers The plate side curved surface area 20e is curved. Each cover panel corner area 20f is connected between an adjacent first cover panel side curved surface area 20d and a second cover panel side curved surface area 20e.

The protective cover 20 is a transparent four-curved cover. The protective cover 20 may be made of glass, but is not limited thereto, and may also include transparent polymer.

The protective cover 20 includes an accommodation cavity 20g enclosed by two first cover side curved surface areas 20d, two second cover side curved surface areas 20e, a cover plate middle area 20c and four cover plate corner areas 20f. The accommodating cavity 20g includes a fitting surface 20h for fitting the display component 110 to be adhered. The fitting surface 20h is located in two first cover side curved surface areas 20d, two second cover side curved surface areas 20e, and a The cover plate middle area 20c and the four cover plate corner areas 20f. The protective cover 20 includes a cover pleat structure 201 on the fitting surface 20h of the cover corner area 20f, and the cover pleat structure 201 protrudes relative to the protective cover 20.

In this embodiment, the protective cover 20 has the same thickness in the first cover side curved surface area 20d, the two second cover side curved surface areas 20e and a cover middle area 20c. The thickness of the position where 201 is located is greater than the thickness of the protective cover 20 in the middle area 20c of the cover.

It can be understood that in other embodiments, the cover pleated structure 201 can be recessed relative to the protective cover 20 . In this case, the thickness of the protective cover 20 at the position where the cover pleated structure 201 is located is smaller than the thickness of the protective cover 20 at the position of the protective cover 20 . The thickness of the middle area 20c of the board; alternatively, a part of the cover pleated structure 201 protrudes relative to the protective cover 20, and the other part of the cover pleated structure 201 is recessed relative to the protective cover 20. At this time, the protective cover 20 The thickness of a part of the position where the plate fold structure 201 is located is greater than the thickness of the protective cover 20 in the middle area 20c of the cover plate, and the thickness of the other part of the protective cover 20 where the cover plate fold structure 201 is located is smaller than the thickness of the protective cover 20 in the middle of the cover plate. The thickness of zone 20c.

S30: Provide a fitting jig, which has at least one first side support curved surface area, at least one second side support curved surface area, and at least one support corner curved surface area, one support corner curved surface area being connected to an adjacent third side supporting curved surface area. Between one side of the support curved surface area and a second side of the support curved surface area, the fitting fixture includes a fixture fold structure, the fixture fold structure is located on the support surface of the fitting fixture supporting the corner curved surface area, and the fixture fold structure is connected to The fold structure of the cover plate is adapted.

Specifically, as shown in Figures 21 and 22, Figure 21 is a three-dimensional schematic view of the bonding fixture according to an embodiment of the present application, and Figure 22 is a partially enlarged schematic view of the bonding fixture shown in Figure 21 at position A4. The laminating jig 70 includes a support part 701 and a jig base 702. The support part 701 is provided on the jig base 702. The fitting fixture 70 is a silicone fixture. It can be understood that the laminating fixture 70 can also be a glass fixture.

The support part 701 includes a middle support area 701a, two first side support curved surface areas 701b, two second side support curved surface areas 701c, and four support corner curved surface areas 701d. The middle support area 701a is planar and rectangular. One first side support curved surface area 701b is connected to the first side of the middle support area 701a, the other first side support curved surface area 701b is connected to the third side of the middle support area 701a, and the first side of the middle support area 701a is connected to the middle support. The third side of the area 701a is opposite, and the two first side support curved surface areas 701b are both curved surface support areas. One second side support curved surface area 701c is connected to the second side of the middle support area 701a, the other second side support curved surface area 701c is connected to the fourth side of the middle support area 701a, and the second side of the middle support area 701a is connected to the middle support. The fourth side of the area 701a is opposite and adjacent to the first side of the middle support area 701a. The fourth side of the middle support area 701a is adjacent to the third side of the middle support area 701a. The two second side support curved surface areas 701c are both It is the surface support area. Each support corner curved surface area 701d is connected between an adjacent first side support curved surface area 701b and a second side support curved surface area 701c and is connected with the middle support area 701a. Each support corner curved surface area 701d is curved. The support part 701 has a support surface 701e for supporting the parts to be bonded. The support surface 701e is located in a middle support area 701a, two first side support curved surface areas 701b, two second side support curved surface areas 701c and four support corners. Surface area 701d. The fitting jig 70 is provided with a jig pleated structure 703 on the support surface 701e that supports the corner curved surface area 701d. The jig pleated structure 703 is recessed relative to the laminating jig 70. The jig pleated structure 703 and the cover pleat structure 201 suitable.

Please refer to Figure 20 and Figure 22 at the same time. In Figure 20, the cover fold structure 201 includes three protruding structures. In Figure 22, the jig fold structure 703 includes three indented structures. The three protruding structures in Figure 20 are different from those in Figure 20. The three recessed structures in 22 are one-to-one complementary, and each protruding structure can be accommodated in one recessed structure.

It should be noted that "matching" in this application refers to a completely or partially complementary structure between the two parts that are adapted to each other.

S40: Place the display component to be bonded on the bonding jig.

Specifically, the display component 110 to be bonded is placed on the supporting surface 701e of the supporting part 701.

S50: Place the protective cover on the display component to be bonded, so that the cover fold structure in the corner area of the cover plate corresponds to the jig fold structure supporting the corner curved surface area, and a first cover side curved surface area corresponds to a The first side support curved surface area and the second side cover side curved surface area correspond to the second side support curved surface area. Under the support of the fitting fixture, the protective cover and the display component to be joined are pressed together. During the process, the display component to be bonded forms a display component pleat structure under the action of the matching jig pleat structure and the cover pleat structure, and the display component pleat structure meshes with the jig pleat structure and the cover pleat structure.

Specifically, the bonding surface 20h of the protective cover 20 is bonded to the display component 110 to be bonded, and the cover middle area 20c of the protective cover 20 is set corresponding to the middle support area 701a of the bonding jig 70. The protective cover The two first cover side curved surface areas 20d of the protection cover 20 and the two first side support curved surface areas 701b of the laminating jig 70 are arranged in one-to-one correspondence. The two second side support curved surface areas 701c of the joint jig 70 are arranged in one-to-one correspondence, the four cover corner areas 20f of the protective cover 20 are arranged in one-to-one correspondence with the four supporting corner curved surface areas 701d, and the indented jig The pleated structure 703 is arranged corresponding to the raised cover pleated structure 201 to pressurize the protective cover 20. Under the joint action of the matching jig pleated structure 703 and the cover pleated structure 201, the display component 110 to be attached is Molded into a display component, the display component includes a display component pleat structure, and the display component pleat structure is meshed with the fixture pleat structure 703 and the cover pleat structure 201 .

S60: Remove the bonding fixture and obtain the display module.

Specifically, the laminating jig 70 is removed to obtain the display module.

The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or modify some of them. Equivalent substitutions are made for the features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application.

Claims

A display module, wherein the display module has a main display area, at least one first side curved surface area, at least one second side curved surface area and at least one corner area, and an adjacent first side curved surface area area and one of the second side curved surface areas are respectively connected to adjacent two sides of one of the main display areas, at least one of the corner areas is connected to one of the main display areas, and one of the corner areas is connected to an adjacent Between one of the first side curved surface areas and one of the second side curved surface areas, the display module includes a protective cover and a display component that is attached to the protective cover;

The surface of the protective cover close to the display component is provided with a cover pleat structure in the corner area, and the display component is provided with a display component pleat structure engaged with the cover pleat structure in the corner area.
The display module according to claim 1, wherein at least part of the fold structure of the cover is located at an edge of the corner area away from the main display area, and at least part of the wrinkle structure of the display component is located in the corner area. away from the edge of the main display area.
The display module according to claim 2, wherein the cover fold structure extends from the connection between the main display area and the corner area to an edge of the corner area away from the main display area;

The pleated structure of the display component extends from the connection between the main display area and the corner area to an edge of the corner area away from the main display area.
The display module according to claim 2, wherein the pleating amplitude of at least part of the cover pleated structure increases in a direction closer to the corner area and away from the edge of the main display area;

The pleating amplitude of at least part of the pleated structure of the display component increases toward a direction closer to the corner area and away from an edge of the main display area.
The display module according to claim 4, wherein the cover fold structure includes at least one protruding structure, and at least one of the protruding structures protrudes in a direction close to the display component, and the protective cover is at the The thickness of the position where the protruding structure is located increases toward the direction close to the corner area and away from the edge of the main display area, and the thickness of the display component at the position where the display component wrinkle structure is located is constant.
The display module according to claim 4, wherein the cover fold structure includes at least one indented structure, at least one of the indented structures is indented in a direction away from the display component, and the protective cover is in The thickness of the recessed structure decreases toward the edge of the corner area away from the main display area;

The thickness of the display component is constant at the location where the fold structure of the display component is located.
The display module according to claim 1, wherein the corner area extends from a connection between the first side curved surface area and the corner area to a connection between the second side curved surface area and the corner area. in the direction of

The pleating amplitude of at least part of the pleated structure of the cover plate continuously increases first and then decreases, and the pleating amplitude of at least part of the pleated structure of the display assembly continuously increases first and then decreases.
The display module according to claim 7, wherein the cover fold structure includes at least one protruding structure, and at least one of the protruding structures protrudes in a direction close to the display component, and is formed from the corner area in the corner area. The connection between the first side curved surface area and the corner area extends in the direction of the connection between the second side curved surface area and the corner area, and the thickness of the protective cover at the location of the protruding structure Continuously increases first and then decreases.
The display module according to claim 7, wherein the cover fold structure includes at least one recessed structure, and the at least one recessed structure is recessed in a direction away from the display component, and the corner area is from The connection between the first side curved surface area and the corner area extends in the direction of the connection between the second side curved surface area and the corner area, and the protective cover is located at the position of the recessed structure. The thickness first decreases and then increases continuously.
The display module according to claim 1, wherein the cover pleated structure includes at least one cover pleated curved surface, and the display component pleated structure includes at least one display component that is fit and engaged with the cover pleated curved surface. Wrinkled surfaces.
The display module according to claim 10, wherein at least one of the cover pleated curved surfaces includes at least one cover pleated convex curved surface, and at least one of the cover pleated convex curved surfaces protrudes in a direction close to the display component. ;

At least one folded curved surface of the display component includes at least one folded indented curved surface of the display component, at least one of the folded indented curved surfaces of the display component is indented in a direction away from the protective cover, and at least one of the cover plate folded convex curved surfaces is connected with at least one of the folded curved surfaces of the display component. The folds of one of the display components are recessed and curved surfaces are engaged one-to-one.
The display module according to claim 11, wherein the thickness of the protective cover at the location of the folded convex curved surface of the cover is greater than the thickness of the protective cover in the main display area, and the display component The thickness at the location of the folded indented curved surface of the display component is equal to the thickness of the display component in the main display area.
The display module according to claim 10, wherein at least one cover fold curved surface includes at least one cover fold recessed curved surface, and the cover fold recessed curved surface is recessed in a direction away from the display component;

At least one display component wrinkled curved surface includes at least one display component wrinkled convex curved surface, the display component wrinkled convex curved surface protrudes in a direction close to the protective cover, at least one of the display component wrinkled convex curved surface and at least one of the The recessed curved surfaces of the cover plate are engaged one-to-one.
The display module according to claim 13, wherein the thickness of the protective cover at the location of the folded indented curved surface of the cover is less than the thickness of the protective cover in the main display area, and the display The thickness of the component at the position where the folded convex curved surface of the display component is located is equal to the thickness of the display component in the main display area.
The display module according to claim 1, wherein at least part of the cover fold structure is located in the corner area extending from the connection between the first side curved surface area and the corner area to the connection between the corner area and the second side curved surface area. At least part of the fold structure of the display component is located in the middle area of the corner area extending from the connection between the first side curved surface area and the corner area to the connection between the corner area and the second side curved surface area.
The display module according to claim 1, wherein the protective cover includes a corner fitting curved surface on a side of the corner area close to the display component, and the cover fold structure is disposed on the corner fitting surface. The curved surface protrudes and/or recesses relative to the corner fitting curved surface, and a chamfer structure is provided at the connection between the cover fold structure and the corner fitting curved surface;

The display component includes a display component corner portion in the corner area, the display component wrinkle structure is disposed on the display component corner portion and protrudes and/or recesses relative to the display component corner portion, the display component A chamfer structure is provided at the connection between the corner portion and the fold structure of the display component.
The display module according to claim 1, wherein the display component includes:

A first functional unit is fitted to the protective cover, and includes a first functional unit pleated structure in the corner area that engages with the pleated structure of the cover;

A display panel is located on the side of the first functional unit away from the protective cover, and includes a display panel pleated structure in the corner area that engages with the pleated structure of the first functional unit; and

The second functional unit is located on the side of the display panel away from the protective cover, and includes a second functional unit pleated structure in the corner area that engages with the pleated structure of the display panel.
A protective cover for a display module, wherein the protective cover has at least one first cover side curved surface area, at least one second cover side curved surface area, and at least one cover corner area, and one of the cover panels The corner area is connected between an adjacent first cover side curved surface area and a second cover side curved surface area, and the protective cover includes:

The cover plate pleat structure is located on the fitting surface of the protective cover plate in the corner area of the cover plate.
A fitting jig, wherein the fitting jig has at least one first side support curved surface area, at least one second side support curved surface area and at least one support corner curved surface area, and one of the support corner curved surface areas is connected to the corresponding Between an adjacent first side support curved surface area and a second side support curved surface area, the fitting fixture includes:

The jig fold structure is located on the support surface of the fitting jig in the support corner curved surface area.
A method of manufacturing a display module, wherein the method includes the following steps:

Provide a display component to be bonded, the display component to be bonded is in the shape of a flat plate;

A protective cover plate is provided, the protective cover plate has at least one first cover plate side curved surface area, at least one second cover plate side curved surface area and at least one cover plate corner area, and one of the cover plate corner areas is connected to an adjacent Between one of the first cover plate side curved surface areas and a second cover plate side curved surface area, the protective cover plate includes a cover plate pleated structure, and the cover plate pleated structure is located on the cover of the protective cover plate. The fitting surface in the corner area of the board;

A fitting jig is provided, the fitting jig has at least one first side support curved surface area, at least one second side support curved surface area and at least one support corner curved surface area, one of the support corner curved surface areas is connected to adjacent Between a first side support curved surface area and a second side support curved surface area, the fitting jig includes a jig fold structure, and the jig fold structure is located in the support corner curved surface area of the fitting jig. On the support surface, the fold structure of the fixture matches the fold structure of the cover plate;

Place the display component to be bonded on the support surface of the bonding jig;

The protective cover is placed on the display component to be bonded, so that the cover fold structure in the corner area of the cover plate corresponds to the jig fold structure in the support corner curved surface area, and the One of the first cover plate side curved surface areas corresponds to one of the first side support curved surface areas, and one second cover plate side curved surface area corresponds to a second side support curved surface area. Under the support of the fitting fixture, the The protective cover is pressed with the display component to be bonded. During the pressing process, the display component to be bonded is affected by the matching wrinkle structure of the jig and the wrinkle structure of the cover plate. Forming a display component pleated structure, the display component pleated structure is meshed with the fixture pleated structure and the cover pleated structure;

The laminating fixture is removed to obtain the display module.