CN115620626B

CN115620626B - Electronic equipment, display screen, display module and dislocation amount testing method of display module

Info

Publication number: CN115620626B
Application number: CN202210969303.9A
Authority: CN
Inventors: 张瑞龙; 王海军
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-10-20
Anticipated expiration: 2042-08-12
Also published as: CN115620626A

Abstract

The embodiment of the application provides electronic equipment, a display screen, a display module and a dislocation amount testing method thereof, wherein the display module at least comprises at least two material layers which are arranged in a laminated way; at least one first groove is formed in a first material layer of the at least two material layers, a first filling layer is arranged in the first groove, and the material adopted by the first filling layer is different from the material adopted by the first material layer; at least one second groove is formed in a second material layer of the at least two material layers, a second filling layer is arranged in the second groove, and the material adopted by the second filling layer is different from the material adopted by the second material layer. Therefore, the dislocation quantity between each material layer in the display module can be accurately measured while the reliability of the display module is not damaged, and further the display effect of the display screen can be prevented from being influenced.

Description

Electronic equipment, display screen, display module and dislocation amount testing method of display module

Technical Field

The embodiment of the application relates to the technical field of terminals, in particular to electronic equipment, a display screen, a display module and a dislocation amount testing method thereof.

Background

Foldable electronic equipment such as mobile phones and computers are indistinguishable from our lives, are visible everywhere in life, and greatly improve the living standard of people. With the rapid development of communication equipment technology, the screen display effect of mobile terminals such as mobile phones is getting more and more important, however, the size of the mobile phones restricts the expansion of the screen size.

In the related art, in order to realize a larger screen area on a smaller electronic device, the electronic device may employ a folder type structure. Specifically, the foldable electronic device generally includes a first structural member, a second structural member, a rotating shaft assembly, and a flexible screen body, where the first structural member and the second structural member are relatively folded or relatively unfolded through the rotating shaft assembly, and the flexible screen body generally covers one side of the first structural member, the second structural member, and the rotating shaft assembly. In the process from an unfolding state to a folding state of the foldable electronic equipment, the membrane materials of each layer at the bending position of the flexible screen body are easy to be dislocated due to shear strain, if the dislocation amount is too large, the membrane materials are possibly cracked, and the like, so that how to accurately measure the dislocation amount between the membrane materials of each layer of the flexible screen body becomes a current problem.

Disclosure of Invention

The embodiment of the application provides electronic equipment, a display screen, a display module and a dislocation amount testing method thereof, which can accurately measure the dislocation amount between each material layer in the display module without damaging the reliability of the display module, thereby avoiding affecting the display effect of the display screen.

In a first aspect, an embodiment of the present application provides a display module, where the display module at least includes: at least two material layers arranged in a stacked manner; at least one first groove is formed in a first material layer of the at least two material layers, a first filling layer is arranged in the first groove, and the material adopted by the first filling layer is different from the material adopted by the first material layer; at least one second groove is formed in a second material layer of the at least two material layers, a second filling layer is arranged in the second groove, and the material adopted by the second filling layer is different from the material adopted by the second material layer.

The display module provided by the embodiment of the application at least comprises at least two material layers which are arranged in a laminated manner, the display module comprises two material layers, the two material layers are respectively a first material layer and a second material layer, at least one first groove is formed in the first material layer, a first filling layer which is different from the first material layer in material is arranged in the first groove, at least one second groove is formed in the second material layer, and a second filling layer which is different from the second material layer in material is arranged in the second groove.

In one possible implementation, the orthographic projection of the first groove in the thickness direction of the display module does not overlap with the orthographic projection of the second groove in the thickness direction of the display module.

Through staggering the orthographic projection of first recess and second recess on the thickness direction of display module assembly and setting, can avoid first recess and second recess to be linked together in the thickness direction of display module assembly, if first recess and second recess are linked together in the thickness direction of display module assembly, can cause certain influence to the structural strength of display module assembly, can also influence the display effect of display module assembly to a certain extent in addition.

In one possible implementation manner, the display module includes: a continuous display region and a non-display region; the non-display area is connected to an outer edge of the display area. The display module can be divided into a display area and a non-display area, wherein the non-display area surrounds the display area for one circle, so that the display area is surrounded on the inner side of the non-display area.

In a possible implementation manner, an orthographic projection of the first groove in a thickness direction of the display module is located in the non-display area; and the orthographic projection of the second groove in the thickness direction of the display module is positioned in the non-display area. Through with first recess design in the non-display area of display module assembly, can avoid first recess to produce harmful effects to the performance of display area to can avoid producing harmful effects to the display effect of display module assembly.

In one possible implementation, the display area includes: a plurality of pixel units distributed at intervals; orthographic projection of the first groove in the thickness direction of the display module is not overlapped with the pixel unit; orthographic projection of the second groove in the thickness direction of the display module is not overlapped with the pixel unit.

Through designing the first groove to stagger each other with the pixel unit of display area, can avoid first groove to cause the interference to the pixel unit of display area to can avoid producing harmful effect to the display effect of display module assembly.

In one possible implementation, a face of the first filling layer facing away from the bottom of the first recess is flush with a face of the first material layer provided with the first recess; one surface of the second filling layer, which faces away from the bottom of the second groove, is flush with one surface of the second material layer, which is provided with the second groove.

Through the one side design that deviates from the tank bottom of first recess with first filling layer be equipped with the one side of first recess with first material layer flush mutually, the roughness when can ensure that first filling layer sets up in first recess avoids first filling layer to trap in or the protrusion in first recess, like this, can resume structural strength and the roughness on first material layer in the very big degree. Also, by designing the side of the second filling layer facing away from the groove bottom of the second groove to be flush with the side of the second material layer provided with the second groove, the flatness of the second filling layer when being arranged in the second groove can be ensured, and the second filling layer is prevented from being trapped in or protruding out of the second groove, so that the structural strength and the flatness of the second material layer can be recovered to a great extent.

In one possible implementation manner, the cross-sectional shape of the first groove is rectangular, cross-shaped, diamond-shaped or triangular; the cross section of the second groove is rectangular, cross-shaped, diamond-shaped or triangular.

In one possible implementation, the method further includes: at least one adhesive layer; the bonding layer is positioned between two adjacent material layers; the bonding layer is provided with at least one third groove, a third filling layer is arranged in the third groove, and the material adopted by the third filling layer is different from the material adopted by the bonding layer.

By designing the adhesive layer between two adjacent material layers, the two adjacent material layers can be prevented from falling off or separating from each other, and the connection strength between the two adjacent material layers can be ensured.

In addition, through being provided with at least one third recess on the adhesive linkage, and be provided with the third filling layer that is different with the material of adhesive linkage in the third recess, take this display module assembly to include two material layers, these two material layers are first material layer and second material layer respectively for the example, in this way, in the in-service use, mark the initial position of certain third filling layer and certain first filling layer and certain second filling layer earlier, after the state of display module assembly changes, mark the position of aforesaid certain third filling layer and certain first filling layer and certain second filling layer again, then through calculating the displacement difference of twice mark, can accurately obtain the relative misplacement between adhesive linkage and the first material layer, and between adhesive linkage and the second material layer, therefore, adopt above-mentioned scheme, can also accurately measure the misplacement between each material layer and the adhesive linkage in the display module assembly, while not damaging the reliability of display module assembly.

In one possible implementation manner, the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the first groove in the thickness direction of the display module; or, the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the second groove in the thickness direction of the display module; or, the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the first groove in the thickness direction of the display module, and the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the second groove in the thickness direction of the display module.

Through staggering the orthographic projection of third recess and first recess on the thickness direction of display module assembly and setting, can avoid third recess and first recess to be linked together in the thickness direction of display module assembly, if third recess and first recess are linked together in the thickness direction of display module assembly, can cause certain influence to the structural strength of display module assembly, can also influence the display effect of display module assembly to a certain extent in addition.

Through staggering the orthographic projection of third recess and second recess on the thickness direction of display module assembly and setting, can avoid third recess and second recess to be linked together in the thickness direction of display module assembly, if third recess and second recess are linked together in the thickness direction of display module assembly, can cause certain influence to the structural strength of display module assembly, can also influence the display effect of display module assembly to a certain extent in addition.

Through staggering the orthographic projection of third recess and first recess and second recess on the thickness direction of display module assembly and setting, can avoid third recess and first recess and second recess to be linked together in the thickness direction of display module assembly, if third recess and first recess and second recess are linked together in the thickness direction of display module assembly, can cause certain influence to the structural strength of display module assembly, can also influence the display effect of display module assembly to a certain extent in addition.

In one possible embodiment, the side of the third filling layer facing away from the bottom of the third recess is flush with the side of the adhesive layer provided with the third recess.

Through the one side design that deviates from the tank bottom of third recess with the third filling layer be equipped with the one side of third recess with the adhesive linkage and flush mutually, the roughness when can ensure that the third filling layer sets up in the third recess avoids the third filling layer to be in-situ to be traped or the protrusion in the third recess, like this, can resume adhesive linkage's structural strength and roughness in the very big degree.

In one possible implementation, the cross-sectional shape of the third groove is rectangular, cross-shaped, diamond-shaped or triangular.

In one possible implementation, at least two of the material layers further comprise: a third material layer; the third material layer is provided with at least one fourth groove, a fourth filling layer is arranged in the fourth groove, and the material adopted by the fourth filling layer is different from the material adopted by the third material layer.

The display module comprises three material layers, namely a first material layer, a second material layer and a third material layer, at least one fourth groove is formed in the third material layer, and a fourth filling layer which is different from the third material layer is arranged in the fourth groove.

In one possible embodiment, the side of the fourth filling layer facing away from the bottom of the fourth recess is flush with the side of the third material layer provided with the fourth recess.

Through the one side design that deviates from the tank bottom of fourth recess with fourth filling layer be equipped with the one side of fourth recess with the third material layer and flush mutually, the roughness when can ensure that fourth filling layer sets up in the fourth recess avoids fourth filling layer to trap in or the protrusion in the fourth recess, like this, can resume the structural strength and the roughness on third material layer in the very big degree.

In one possible implementation, the cross-sectional shape of the fourth groove is rectangular, cross-shaped, diamond-shaped or triangular.

In a second aspect, an embodiment of the present application provides a display screen, including at least: a glass cover plate and any one of the display modules; the glass cover plate is covered on the display module.

The display screen provided by the embodiment of the application at least comprises a display module, wherein the display module at least comprises at least two material layers which are arranged in a laminated way, the display module comprises two material layers, the two material layers are respectively a first material layer and a second material layer, at least one first groove is formed in the first material layer, a first filling layer which is different from the first material layer in material is formed in the first groove, at least one second groove is formed in the second material layer, and a second filling layer which is different from the second material layer in material is formed in the second groove.

In a third aspect, an embodiment of the present application provides an electronic device, including at least: the display screen is described above.

The electronic device provided by the embodiment of the application at least comprises a display screen, the display screen at least comprises a display module, the display module at least comprises at least two material layers which are arranged in a lamination mode, the display module comprises two material layers, the two material layers are respectively a first material layer and a second material layer, at least one first groove is formed in the first material layer, a first filling layer which is different from the first material layer in material is arranged in the first groove, at least one second groove is formed in the second material layer, and a second filling layer which is different from the second material layer in material is arranged in the second groove.

In a fourth aspect, an embodiment of the present application provides a method for manufacturing a display module, where the method at least includes: providing at least a first material layer and a second material layer; at least one first groove is formed in the first material layer, and at least one second groove is formed in the second material layer; a first filling layer is arranged in the first groove, wherein the material adopted by the first filling layer is different from the material adopted by the first material layer; and a second filling layer is arranged in the second groove, wherein the material adopted by the second filling layer is different from the material adopted by the second material layer.

According to the manufacturing method of the display module, in the manufacturing method of the display module, at least one first groove is formed in the first material layer, the first filling layer which is different from the first material layer in material is arranged in the first groove, at least one second groove is formed in the second material layer, and the second filling layer which is different from the second material layer in material is arranged in the second groove.

In one possible implementation manner, the forming at least one first groove on the first material layer includes: disposing a first photoresist on one side of the first material layer; setting a first preset pattern on the first photoresist and exposing; developing the first photoresist; etching the first photoresist and the first material layer according to the first preset pattern; removing the first photoresist to form at least one first groove on the first material layer;

the forming of at least one second groove on the second material layer includes: disposing a second photoresist on one side of the second material layer; setting a second preset pattern on the second photoresist and exposing; developing the second photoresist; etching the second photoresist and the second material layer according to the second preset pattern; and removing the second photoresist to form at least one second groove on the second material layer.

In one possible implementation manner, the disposing a first filling layer in the first groove includes: depositing a first filling material on one surface of the first material layer, which is provided with the first groove; providing a third photoresist on a side of the first filling material facing away from the first material layer; setting a third preset pattern on the third photoresist and exposing; developing the third photoresist; etching the third photoresist and the first filling material according to the third preset pattern; removing the third photoresist to enable the residual first filling material to form a first filling layer in the first groove;

The second filling layer is arranged in the second groove, and the method comprises the following steps: depositing a second filling material on one surface of the second material layer, which is provided with the second groove; disposing a fourth photoresist on a side of the second fill material facing away from the second material layer; setting a fourth preset pattern on the fourth photoresist and exposing; developing the fourth photoresist; etching the fourth photoresist and the second filling material according to the fourth preset pattern; and removing the fourth photoresist to enable the residual second filling material to form a second filling layer in the second groove.

In one possible implementation manner, the first material layer is made of polyamide, and the first filling material is silicon; the second material layer is made of polyamide, and the second filling material is silicon.

In one possible implementation manner, the disposing a first filling layer in the first groove includes: a first filling material is arranged on one surface of the first material layer, which is provided with the first groove, in a silk screen manner; setting a third preset pattern on the first filling material and exposing; developing the first filling material to form a first filling layer in the first groove; wherein the first filling material is a photosensitive material;

The second filling layer is arranged in the second groove, and the method comprises the following steps: a second filling material is arranged on one surface of the second material layer, which is provided with the second groove, in a silk screen manner; setting a fourth preset pattern on the second filling material and exposing; developing the second filling material to form a second filling layer in the second groove; wherein the second filling material is a photosensitive material.

In one possible implementation, the first material layer is transparent polyamide, a polarizing plate or an optical adhesive, and the first filling material is photosensitive silver paste; the second material layer is transparent polyamide, a polarizing plate or optical cement, and the second filling material is photosensitive silver paste.

In a fifth aspect, an embodiment of the present application provides a method for testing a dislocation amount of a display module, where the method at least includes: marking the position of a first groove on the first material layer and marking the position of a second groove on the second material layer; measuring a first X-direction distance and a first Y-direction distance between the first groove and the second groove; after the display module is bent, measuring a second X-direction distance and a second Y-direction distance between the first groove and the second groove; and calculating the X displacement difference between the first groove and the second groove according to the second X distance and the first X distance, and calculating the Y displacement difference between the first groove and the second groove according to the second Y distance and the first Y distance to obtain the dislocation amount of the display module after bending.

In the method for testing the dislocation of the display module provided by the embodiment of the application, the display module comprises two material layers, wherein the two material layers are respectively a first material layer and a second material layer, at least one first groove is arranged on the first material layer, a first filling layer which is different from the material of the first material layer is arranged in the first groove, at least one second groove is arranged on the second material layer, and a second filling layer which is different from the material of the second material layer is arranged in the second groove.

Drawings

Fig. 1 is a schematic perspective view of a folding screen mobile phone in a folded state according to an embodiment of the present application;

fig. 2 is a schematic perspective view of a folding screen mobile phone in a semi-folded state according to an embodiment of the present application;

fig. 3 is a schematic perspective view of a folding mobile phone in an unfolded state according to an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a display screen in a folding screen mobile phone according to an embodiment of the present application;

fig. 5 is a schematic cross-sectional view of a display module in a display screen of a folding screen mobile phone according to an embodiment of the present application;

fig. 6 is a schematic top view of a display module in a display screen of a folding mobile phone according to an embodiment of the application;

fig. 7 is a schematic cross-sectional view of a display module in a display screen of a folding mobile phone according to an embodiment of the application;

fig. 8 is a schematic cross-sectional view of a display module in a display screen of a folding mobile phone according to an embodiment of the application;

fig. 9 is a schematic cross-sectional view of a display module in a display screen of a folding mobile phone according to an embodiment of the application;

FIG. 10 is a schematic diagram of a display module according to an embodiment of the application, in which a first photoresist is disposed on one surface of a first material layer;

FIG. 11 is a schematic diagram showing a structure of a display module according to an embodiment of the application, wherein a first predetermined pattern is set on a first photoresist and exposed;

FIG. 12 is a schematic diagram showing a structure of developing a first photoresist in a display module according to an embodiment of the application;

FIG. 13 is a schematic diagram of a structure of a display module according to an embodiment of the present application for etching a first photoresist and a first material layer according to a first predetermined pattern;

FIG. 14 is a schematic diagram showing a structure of removing the first photoresist to form at least one first recess on the first material layer in the display module according to an embodiment of the application;

FIG. 15 is a schematic diagram showing a structure of a display module according to an embodiment of the application, wherein a first filling material is deposited on a surface of a first material layer having a first recess;

FIG. 16 is a schematic structural diagram of a display module according to an embodiment of the present application, in which a third photoresist is disposed on a surface of the first filling material facing away from the first material layer;

FIG. 17 is a schematic diagram showing a structure of setting a third predetermined pattern on a third photoresist and performing exposure in a display module according to an embodiment of the application;

FIG. 18 is a schematic diagram of a structure of a display module according to an embodiment of the application for etching a third photoresist and a first filling material according to a third predetermined pattern;

FIG. 19 is a schematic diagram showing a structure of removing the third photoresist in the display module according to an embodiment of the application, so that the remaining first filling material forms a first filling layer in the first recess;

FIG. 20 is a schematic diagram of a display module according to an embodiment of the application, in which a second photoresist is disposed on one surface of a second material layer;

FIG. 21 is a schematic diagram showing a structure of a display module according to an embodiment of the application, wherein a second predetermined pattern is set on a second photoresist and exposed;

FIG. 22 is a schematic diagram showing a structure of developing a second photoresist in a display module according to an embodiment of the application;

FIG. 23 is a schematic diagram of a structure of a display module according to an embodiment of the present application for etching a second photoresist and a second material layer according to a second predetermined pattern;

FIG. 24 is a schematic diagram showing a structure of removing the second photoresist to form at least one second recess on the second material layer in the display module according to an embodiment of the application;

fig. 25 is a schematic structural diagram of a display module according to an embodiment of the present application, in which a second filling material is disposed on a surface of a second material layer with a second groove by screen printing;

FIG. 26 is a schematic diagram showing a structure of setting a fourth predetermined pattern on the second filling material and exposing the fourth predetermined pattern in the display module according to an embodiment of the present application;

Fig. 27 is a schematic structural diagram of developing the second filling material to form a second filling layer in the second groove in the display module according to an embodiment of the application;

fig. 28 is a schematic structural diagram of marking a first marking point on a first material layer in a display module according to an embodiment of the application;

fig. 29 is a schematic structural diagram of a display module according to an embodiment of the application, in which a first mark point is marked on a first material layer and a second mark point is marked on a second material layer;

FIG. 30 is a schematic diagram illustrating a structure of a first mark point and a second mark point in a display module according to an embodiment of the application;

fig. 31 is a schematic structural diagram of a display module according to an embodiment of the present application, in which a first mark point is marked on a first material layer, a second mark point is marked on a second material layer, and a third mark point is marked on a third material layer;

FIG. 32 is a schematic diagram of a structure of marking a third mark point on a third material layer in a display module according to an embodiment of the application;

fig. 33 is a schematic structural diagram of marking a third mark point on a third material layer in a display module according to an embodiment of the application.

Reference numerals illustrate:

200-folding screen mobile phone; 210-a first structural member; 220-a second structural member;

230-a spindle assembly; 240-a rear cover; 250-display screen;

251-glass cover plate; 100-a display module; 100 a-a display area;

1001-pixel units; 100 b-non-display area; 110-a first material layer;

111-a first groove; 1111—the bottom of the first groove; 112-a first filling layer;

120-a second material layer; 121-a second groove; 1211-the bottom of the second groove;

122-a second filling layer; 130-a third material layer; 131-fourth grooves;

1311-the bottom of the fourth groove; 132-fourth fill layer; 140-fourth material layers;

150-a fifth material layer; 160-a sixth material layer; 170-a first adhesive layer;

171-a third groove; 1711-a bottom of the third groove; 172-a third filler layer;

180-a second adhesive layer; 190-a third adhesive layer; 191-fourth adhesive layer;

310-a first emitting device; 320-a first receiving device; 330-a second emitting device;

340-a second receiving device; 410-a first mark point; 420-a second marker point;

430-third marker point; 440-fourth mark point; 450-fifth marker point;

500-a first photoresist; 510-a third photoresist; 520-a second photoresist;

600-a first preset pattern; 610-a third preset pattern; 620-a second preset pattern;

630-a fourth preset pattern; 700-light source; 800-a first filler material;

810-a second filler material.

Detailed Description

The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, as will be described in detail with reference to the accompanying drawings.

The appearance of the flexible screen breaks through the display mode of the original display device, the foldable electronic device can doubly improve the information interaction efficiency through one or more simple folds, the information interaction mode can be completely overturned through the designs of multiple folds, scroll type and the like in the future, the folding electronic display screen can flexibly change the switching mode according to different use scenes, meanwhile, the high screen occupation ratio and the definition can be provided, and the folding electronic display screen gradually becomes a hotspot for people to study.

The embodiment of the application provides an electronic device, which may include, but is not limited to, mobile or fixed terminals with display screens, such as mobile phones, tablet computers, notebook computers, ultra-mobile personal computers (ultra-mobile personal computer, UMPC), handheld computers, touch televisions, interphones, netbooks, point of sale (POS) machines, personal digital assistants (personal digital assistant, PDAs), wearable devices, virtual reality devices, wireless U-discs, bluetooth sound/earphone/glasses, vehicle-mounted front-loading, automobile data recorders, security devices, and the like.

In the embodiment of the present application, the mobile phone is taken as an example of the electronic device, and the mobile phone provided in the embodiment of the present application may be a curved screen mobile phone, a flat screen mobile phone, a tablet mobile phone, or a folding screen mobile phone (for example, see a water drop type folding screen mobile phone shown in fig. 7), and in the embodiment of the present application, the folding screen mobile phone is taken as an example.

Referring to fig. 1 to 3, taking the electronic device as an example of a folding screen mobile phone 200, the folding screen mobile phone 200 may include: the first structural member 210 and the second structural member 220 have a bending region between the first structural member 210 and the second structural member 220. In this embodiment, a rotating shaft assembly 230 may be disposed in the bending region, where the rotating shaft assembly 230 is located between the first structural member 210 and the second structural member 220, and the first structural member 210 and the second structural member 220 are rotationally connected through the rotating shaft assembly 230, so as to achieve folding and unfolding of the first structural member 210 and the second structural member 220.

In an embodiment of the present application, as shown in fig. 2 or fig. 3, the folding screen mobile phone 200 may further include: the display 250, wherein the display 250 may be a flexible screen, and the flexible screen may cover one surface of the first structural member 210, the rotating shaft assembly 230, and the second structural member 220, so that the flexible screen may be folded or unfolded according to rotation of the first structural member 210 and the second structural member 220.

Illustratively, when the first structural member 210 and the second structural member 220 are rotated in a direction toward each other to a folded state (see fig. 1), the flexible screen of the folding screen phone 200 is also positioned between the first structural member 210 and the second structural member 220 in the folded state. When the first structural member 210 and the second structural member 220 are rotated away from each other to an unfolded state (see fig. 3), the flexible screen of the folding screen mobile phone 200 is unfolded until the first structural member 210 and the second structural member 220 are located on the same horizontal plane.

In the embodiment of the present application, since the display 250 needs to be folded, the display 250 may be a flexible display, for example, the flexible display may be an Organic Light-Emitting Diode (OLED) display.

It should be noted that the number of the structural members in the folding screen mobile phone 200 may be two (see fig. 1 to 3) or more, and when the number of the structural members is two or more, each adjacent structural member may rotate around the mutually parallel rotating shaft assembly 230, so as to form a multi-layer structural member, or obtain a larger display area after being unfolded. In the embodiment of the present application, two structural members (i.e., the first structural member 210 and the second structural member 220) are mainly used for illustration in the folding-screen mobile phone 200.

Further, the folding screen mobile phone 200 may further include: the rear cover 240, as shown in fig. 1 or 2, the rear cover 240 is located on a side of the first structural member 210, the hinge assembly 230, and the second structural member 220 facing away from the display screen 250, for example, the first structural member 210, the hinge assembly 230, and the second structural member 220 may each be located between the display screen 250 and the rear cover 240.

It should be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device. In other embodiments of the application, the electronic device may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. For example, the folding screen phone 200 may further include a camera module, a flash, and other devices. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

In addition, referring to fig. 4, the display screen 250 may include at least the display module 100 and the glass cover plate 251, wherein the glass cover plate 251 may be positioned above the display module 100, and in particular, the glass cover plate 251 may cover the display module 100, and the size of the glass cover plate 251 may be greater than or equal to the size of the display module 100.

In the embodiment of the present application, the display module 100 and the glass cover plate 251 may be connected by an adhesive layer (not shown in the figure), and specifically, the display module 100 and the glass cover plate 251 may be adhered by optical cement (Optical Clear Adhesive, OCA). Of course, in other examples, the display module 100 and the glass cover plate 251 may be attached to each other in other manners, for example, the display module 100 and the glass cover plate 251 may be hot-pressed to form the display screen 250.

The display module 100 generally includes a multi-layer structure, and in the related art, for the display module 100, two adjacent layers of structures are generally fixedly connected with each other by adopting an adhesive manner. However, in the process from the unfolded state to the folded state of the foldable electronic device, the display module 100 is relatively bent, so that the display module 100 is easy to generate dislocation between each layer of film material at the bending position due to shear strain, if the dislocation amount is too large, the film material may be cracked, and other problems may result in the uneven phenomenon of the display module 100, so that the display effect of the display screen 250 may be affected, and the visual experience of consumers when using the electronic device may be further affected. Therefore, how to accurately measure the amount of dislocation between the films of the display module 100 becomes a current problem.

Based on this, the embodiment of the application provides a new display module 100, and the display module 100 can be applied to an electronic device (such as a mobile phone or a computer) with a display screen 250 to solve the above technical problems.

The following describes the specific structure of the display module 100 in detail, taking different embodiments as examples with reference to the accompanying drawings.

Referring to fig. 5, an embodiment of the present application provides a display module 100, where the display module 100 may be applied to a display 250 (e.g. a flexible display), and the display module 100 may at least include: at least two material layers (e.g., the first material layer 110 and the second material layer 120 in fig. 5 or 6) are stacked.

Wherein, at least one first groove 111 may be disposed on the first material layer 110, a first filling layer 112 may be disposed in the first groove 111, and a material adopted by the first filling layer 112 may be different from a material adopted by the first material layer 110. At least one second groove 121 may be disposed on the second material layer 120, and a second filling layer 122 may be disposed in the second groove 121, and a material adopted by the second filling layer 122 may be different from a material adopted by the second material layer 120.

It should be noted that the first recess 111 may be formed on the first material layer 110 by an etching process, and the second recess 121 may be formed on the second material layer 120 by an etching process.

By arranging at least one first groove 111 on the first material layer 110, arranging a first filling layer 112 with a material different from that of the first material layer 110 in the first groove 111, arranging at least one second groove 121 on the second material layer 120, and arranging a second filling layer 122 with a material different from that of the second material layer 120 in the second groove 121, in the actual use process, the initial positions of a certain first filling layer 112 and a certain second filling layer 122 are marked first, after the state of the display module 100 is changed, the positions of the certain first filling layer 112 and a certain second filling layer 122 are marked again, and then the displacement difference of the two marks is calculated, so that the dislocation amount between the first material layer 110 and the second material layer 120 can be accurately obtained.

In an embodiment of the present application, the front projection of the first groove 111 in the thickness direction of the display module 100 may not overlap with the front projection of the second groove 121 in the thickness direction of the display module 100.

Through staggering the orthographic projection of the first groove 111 and the second groove 121 in the thickness direction of the display module 100, the first groove 111 and the second groove 121 can be prevented from being communicated in the thickness direction of the display module 100, and if the first groove 111 and the second groove 121 are communicated in the thickness direction of the display module 100, the structural strength of the display module 100 can be influenced to a certain extent, and in addition, the display effect of the display module 100 can be influenced to a certain extent.

In an embodiment of the present application, as shown in fig. 6, the display module 100 may include: a continuous display area 100a and a non-display area 100b, wherein the non-display area 100b is connected to an outer edge of the display area 100 a. That is, the display module 100 may be divided into a display area 100a and a non-display area 100b, wherein the non-display area 100b surrounds the display area 100a once to surround the display area 100a inside the non-display area 100 b.

In an embodiment of the present application, the front projection of the first recess 111 in the thickness direction of the display module 100 may be located in the non-display area 100b, and likewise, the front projection of the second recess 121 in the thickness direction of the display module 100 may be located in the non-display area 100 b. By designing the first groove 111 in the non-display area 100b of the display module 100, the first groove 111 can be prevented from adversely affecting the usability of the display area 100a, and thus the display effect of the display module 100 can be prevented from being adversely affected.

Additionally, with continued reference to FIG. 6, in some embodiments, the display area 100a may include: and a plurality of pixel units 1001 distributed at intervals, wherein the orthographic projection of the first groove 111 in the thickness direction of the display module 100 is not overlapped with the pixel unit 1001, and the orthographic projection of the second groove 121 in the thickness direction of the display module 100 is not overlapped with the pixel unit 1001.

By designing the first groove 111 to be offset from the pixel unit 1001 of the display area 100a, interference of the first groove 111 with the pixel unit 1001 of the display area 100a can be avoided, and adverse effects on the display effect of the display module 100 can be avoided.

It will be appreciated that in embodiments of the present application, the side of the first filling layer 112 facing away from the bottom 1111 of the first recess may be flush with the side of the first material layer 110 provided with the first recess 111, and the side of the second filling layer 122 facing away from the bottom 1211 of the second recess may be flush with the side of the second material layer 120 provided with the second recess 121.

In this way, the flatness of the first filling layer 112 when disposed in the first recess 111 can be ensured, and the first filling layer 112 is prevented from being trapped in or protruding from the first recess 111, so that the structural strength and flatness of the first material layer 110 can be restored to a great extent. Also, the flatness of the second filling layer 122 when it is disposed in the second groove 121 can be ensured, and the second filling layer 122 is prevented from being caught in or protruding from the second groove 121, so that the structural strength and flatness of the second material layer 120 can be restored to a great extent.

In one possible implementation, the cross-sectional shape of the first groove 111 may be rectangular, cross-shaped, diamond-shaped, or triangular, and the cross-sectional shape of the second groove 121 may be rectangular, cross-shaped, diamond-shaped, or triangular. It should be noted that the cross-sectional shapes of the first groove 111 and the second groove 121 are not limited in the embodiments of the present application, and are not limited to the above examples.

In an embodiment of the present application, the display module 100 may further include: at least one adhesive layer (e.g., the first adhesive layer 170 in fig. 7), wherein the adhesive layer may be located between two adjacent material layers, at least one third groove 171 may be disposed on the adhesive layer, a third filling layer 172 may be disposed in the third groove 171, and a material of the third filling layer 172 is different from a material of the adhesive layer.

For example, referring to fig. 7, taking an adhesive layer as the first adhesive layer 170, the first adhesive layer 170 may be located between the first material layer 110 and the second material layer 120, at least one third groove 171 may be disposed on the first adhesive layer 170, a third filling layer 172 may be disposed in the third groove 171, and a material of the third filling layer 172 is different from a material of the first adhesive layer 170.

By designing the adhesive layer between two adjacent material layers, the two adjacent material layers can be prevented from falling off or separating from each other, and the connection strength between the two adjacent material layers can be ensured. For example, by designing the first adhesive layer 170 between the first material layer 110 and the second material layer 120, it is possible to prevent the first material layer 110 and the second material layer 120 from coming off or coming off, and thus it is possible to secure the connection strength between the adjacent first material layer 110 and second material layer 120.

In addition, by providing at least one third groove 171 on the adhesive layer, and providing a third filling layer 172 with a material different from that of the adhesive layer in the third groove 171, the display module 100 may include two material layers, that is, the first material layer 110 and the second material layer 120, respectively, and the adhesive layer is the first adhesive layer 170, for example, in the actual use process, the initial positions of a certain third filling layer 172 and a certain first filling layer 112 and a certain second filling layer 122 are marked first, after the state of the display module 100 changes, the positions of a certain third filling layer 172 and a certain first filling layer 112 and a certain second filling layer 122 are marked again, and then by calculating displacement differences of the two marks, relative amounts of displacement between the first adhesive layer 170 and the first material layer 110 and between the first adhesive layer 170 and the second material layer 120 can be accurately obtained.

It should be noted that, in the embodiment of the present application, the orthographic projection of the third groove 171 in the thickness direction of the display module 100 may not overlap with the orthographic projection of the first groove 111 in the thickness direction of the display module 100. By staggering the orthographic projection of the third groove 171 and the first groove 111 in the thickness direction of the display module 100, the third groove 171 and the first groove 111 can be prevented from being communicated in the thickness direction of the display module 100, and if the third groove 171 and the first groove 111 are communicated in the thickness direction of the display module 100, the structural strength of the display module 100 can be affected to a certain extent, and in addition, the display effect of the display module 100 can be affected to a certain extent.

Alternatively, the orthographic projection of the third groove 171 in the thickness direction of the display module 100 does not overlap with the orthographic projection of the second groove 121 in the thickness direction of the display module 100. By staggering the orthographic projections of the third groove 171 and the second groove 121 in the thickness direction of the display module 100, the third groove 171 and the second groove 121 can be prevented from being communicated in the thickness direction of the display module 100, and if the third groove 171 and the second groove 121 are communicated in the thickness direction of the display module 100, the structural strength of the display module 100 can be affected to a certain extent, and in addition, the display effect of the display module 100 can be affected to a certain extent.

Alternatively, the orthographic projection of the third groove 171 in the thickness direction of the display module 100 does not overlap with the orthographic projection of the first groove 111 in the thickness direction of the display module 100, and the orthographic projection of the third groove 171 in the thickness direction of the display module 100 does not overlap with the orthographic projection of the second groove 121 in the thickness direction of the display module 100. Through staggering the orthographic projection of the third groove 171 and the first groove 111 and the second groove 121 in the thickness direction of the display module 100, the third groove 171 and the first groove 111 and the second groove 121 can be prevented from being communicated in the thickness direction of the display module 100, and if the third groove 171 and the first groove 111 and the second groove 121 are communicated in the thickness direction of the display module 100, the structural strength of the display module 100 can be affected to a certain extent, and in addition, the display effect of the display module 100 can be affected to a certain extent.

In addition, in some embodiments, the side of the third filler layer 172 facing away from the groove bottom 1711 of the third groove may be flush with the side of the adhesive layer where the third groove 171 is located. Illustratively, in fig. 7, the side of the third filler layer 172 facing away from the groove bottom 1711 of the third groove is flush with the side of the first adhesive layer 170 where the third groove 171 is located.

By designing the side of the third filling layer 172 facing away from the groove bottom 1711 of the third groove to be flush with the side of the first adhesive layer 170 where the third groove 171 is provided, it is possible to ensure flatness when the third filling layer 172 is provided in the third groove 171, and to avoid the third filling layer 172 from being trapped in or protruding from the third groove 171, and thus, it is possible to recover the structural strength and flatness of the first adhesive layer 170 to a great extent.

In one possible implementation, the cross-sectional shape of the third groove 171 may be rectangular, cross-shaped, diamond-shaped, or triangular. Note that, the cross-sectional shape of the third groove 171 is not limited in the embodiment of the present application, and is not limited to the above example.

On the basis of the above embodiment, the at least two material layers may further include: a third material layer 130 (see fig. 8), wherein the second material layer 120 is located between the third material layer 130 and the first material layer 110.

Specifically, as shown in fig. 8, at least one fourth groove 131 may be disposed on the third material layer 130, a fourth filling layer 132 may be disposed in the fourth groove 131, and a material adopted by the fourth filling layer 132 may be different from a material adopted by the third material layer 130.

By providing at least one fourth groove 131 on the third material layer 130, and providing a fourth filling layer 132 with a material different from that of the third material layer 130 in the fourth groove 131, the display module 100 may include three material layers, which are the first material layer 110, the second material layer 120, and the third material layer 130, respectively, for example, so that in a practical use process, the initial positions of a certain fourth filling layer 132 and a certain first filling layer 112, and a certain second filling layer 122 are marked first, after the state of the display module 100 changes, the positions of a certain fourth filling layer 132 and a certain first filling layer 112, and a certain second filling layer 122 are marked again, and then by calculating displacement differences of the marks twice, the relative amounts of displacement between the third material layer 130 and the first material layer 110, and between the third material layer 130 and the second material layer 120 can be accurately obtained.

It will be appreciated that in embodiments of the present application, the side of the fourth filler layer 132 facing away from the groove bottom 1311 of the fourth groove may be flush with the side of the third material layer 130 where the fourth groove 131 is provided.

By designing the face of the fourth filling layer 132 facing away from the groove bottom 1311 of the fourth groove to be flush with the face of the third material layer 130 provided with the fourth groove 131, it is possible to ensure flatness when the fourth filling layer 132 is provided in the fourth groove 131, to avoid the fourth filling layer 132 from being trapped in or protruding from the fourth groove 131, and thus, it is possible to recover structural strength and flatness of the third material layer 130 to a great extent.

In one possible implementation, the cross-sectional shape of the fourth groove 131 may be rectangular, cross-shaped, diamond-shaped, or triangular. Note that, the cross-sectional shape of the fourth groove 131 is not limited in the embodiment of the present application, and is not limited to the above example.

In addition, it may be understood that, in the embodiment of the present application, referring to fig. 9, the display module 100 may further include: the fourth material layer 140, the fifth material layer 150, and the sixth material layer 160, wherein the fourth material layer 140 may be located between the first material layer 110 and the first adhesive layer 170, and the fifth material layer 150 may be located between the first material layer 110 and the sixth material layer 160.

In order to measure the amount of dislocation between the fourth material layer 140 and other material layers or adhesive layers, at least one fifth groove (not shown) may be provided on the fourth material layer 140, a fifth filling layer may be provided in the fifth groove, and the fifth filling layer may be made of a material different from that of the fourth material layer 140. Also, in order to measure the amount of dislocation between the fifth material layer 150 and other material layers or adhesive layers, at least one sixth groove (not shown) may be provided on the fifth material layer 150, a sixth filling layer may be provided in the sixth groove, and the sixth filling layer may be made of a material different from that of the fifth material layer 150. In order to measure the amount of dislocation between the sixth material layer 160 and other material layers or adhesive layers, at least one seventh groove (not shown) may be provided on the sixth material layer 160, a seventh filling layer may be provided in the seventh groove, and the seventh filling layer may be made of a material different from that of the sixth material layer 160.

With continued reference to fig. 9, the display module 100 may further include: a second adhesive layer 180 and a third adhesive layer 190, wherein the second adhesive layer 180 may be located between the first material layer 110 and the third material layer 130, and the third adhesive layer 190 may be located between the first material layer 110 and the fifth material layer 150.

In order to measure the amount of dislocation between the second adhesive layer 180 and other material layers or adhesive layers, at least one eighth groove (not shown) may be provided on the second adhesive layer 180, an eighth filling layer may be provided in the eighth groove, and the material of the eighth filling layer may be different from that of the second adhesive layer 180. Also, in order to measure the amount of dislocation between the third adhesive layer 190 and other material layers or adhesive layers, at least one ninth groove (not shown) may be provided on the third adhesive layer 190, a ninth filling layer may be provided in the ninth groove, and the material of the ninth filling layer may be different from that of the third adhesive layer 190.

In fig. 9, the first material layer 110 may be a polyamide, the second material layer 120 may be a polarizing plate, the third material layer 130 may be a transparent polyamide, the fourth material layer 140 may be a light emitting display layer, the fifth material layer 150 may be a steel sheet, the sixth material layer 160 may be a mylar, and the first adhesive layer 170, the second adhesive layer 180, and the third adhesive layer 190 may be optical adhesives.

In addition, the embodiment of the present application further provides a method for manufacturing the display module 100, which is used for manufacturing the display module 100 in the above embodiment, and the manufacturing method at least may include:

s101: providing at least a first material layer 110 and a second material layer 120;

s102: at least one first groove 111 is formed in the first material layer 110, and at least one second groove 121 is formed in the second material layer 120;

s103: a first filling layer 112 is disposed in the first groove 111, wherein a material adopted by the first filling layer 112 is different from a material adopted by the first material layer 110, and a second filling layer 122 is disposed in the second groove 121, wherein a material adopted by the second filling layer 122 is different from a material adopted by the second material layer 120.

In the manufacturing method of the display module 100, at least one first groove 111 is formed in the first material layer 110, a first filling layer 112 made of a material different from that of the first material layer 110 is formed in the first groove 111, at least one second groove 121 is formed in the second material layer 120, and a second filling layer 122 made of a material different from that of the second material layer 120 is formed in the second groove 121, so that in the actual use process, the initial positions of a certain first filling layer 112 and a certain second filling layer 122 are marked first, after the state of the display module 100 is changed, the positions of the certain first filling layer 112 and a certain second filling layer 122 are marked again, and then the displacement difference of the two marks is calculated, so that the dislocation amount between the first material layer 110 and the second material layer 120 can be accurately obtained.

It should be noted that, in the embodiment of the present application, in S102, the opening at least one first groove 111 on the first material layer 110 may include:

S1021A: referring to fig. 10, a first photoresist 500 is disposed on one side of the first material layer 110;

S1022A: setting a first preset pattern 600 on the first photoresist 500 and performing exposure;

specifically, referring to fig. 11, the first preset pattern 600 may be exposed using a light source 700.

S1023A: referring to fig. 12, the first photoresist 500 is developed;

S1024A: referring to fig. 13, the first photoresist 500 and the first material layer 110 are etched according to the first preset pattern 600;

S1025A: referring to fig. 14, the first photoresist 500 is removed to form at least one first groove 111 on the first material layer 110.

Also, in S102, at least one second groove 121 (not shown in the drawing) is formed on the second material layer 120, which may include:

S1021B: referring to fig. 20, a second photoresist 520 is disposed on one side of the second material layer 120;

S1022B: referring to fig. 21, a second preset pattern 620 is set on the second photoresist 520 and exposed;

S1023B: referring to fig. 22, the second photoresist 520 is developed;

S1024B: referring to fig. 23, the second photoresist 520 and the second material layer 120 are etched according to the second preset pattern 620;

S1025B: referring to fig. 24, the second photoresist 520 is removed to form at least one second groove 121 on the second material layer 120.

In addition, in the embodiment of the present application, the specific implementation manner of S103 may include, but is not limited to, the following two possible implementation manners:

in one possible implementation manner, in S103, disposing the first filling layer 112 in the first groove 111 may include:

S1031A: referring to fig. 15, a first filling material 800 is deposited on a side of the first material layer 110 where the first recess 111 is provided;

S1032A: referring to fig. 16, a third photoresist 510 is disposed on a side of the first fill material 800 facing away from the first material layer 110;

S1033A: referring to fig. 17, a third preset pattern 610 is set on the third photoresist 510 and exposed;

S1034A: developing the third photoresist 510;

S1035A: referring to fig. 18, the third photoresist 510 and the first filling material 800 are etched according to the third preset pattern 610;

S1036A: referring to fig. 19, the third photoresist 510 is removed so that the remaining first filling material 800 forms the first filling layer 112 in the first groove 111.

Also, in S103, disposing the second filling layer 122 (not shown in the drawing) in the second groove 121 may include:

S1031B: depositing a second filling material on a surface of the second material layer 120 where the second groove 121 is provided;

S1032B: disposing a fourth photoresist on a side of the second fill material facing away from the second material layer 120;

S1033B: setting a fourth preset pattern on the fourth photoresist and exposing;

S1034B: developing the fourth photoresist;

S1035B: etching the fourth photoresist and the second filling material according to the fourth preset pattern;

S1036B: the fourth photoresist is removed so that the remaining second filling material forms a second filling layer 122 in the second recess 121.

In this implementation, the material used for the first material layer 110 may be polyamide, and the material used for the second material layer 120 may be polyamide. The material used for the first filling material 800 may be silicon, and the material used for the second filling material may be silicon.

Alternatively, in another possible implementation manner, in S103, the first filling layer 112 (not shown in the drawing) is disposed in the first groove 111, which may include:

S1031C: a first filling material 800 is silk-screened on one surface of the first material layer 110 provided with the first groove 111;

S1032C: setting a third preset pattern 610 on the first filling material 800 and exposing;

S1033C: the first filling material 800 is developed to form a first filling layer 112 in the first groove 111, wherein the first filling material 800 is a photosensitive material.

Also, in S103, disposing the second filling layer 122 in the second groove 121 may include:

S1031D: referring to fig. 25, a second filling material 810 is silk-screened on the side of the second material layer 120 provided with the second grooves 121;

S1032D: referring to fig. 26, a fourth preset pattern 630 is set on the second filling material 810 and exposed;

S1033D: referring to fig. 27, the second filling material 810 is developed to form the second filling layer 122 in the second groove 121.

Wherein the second filling material 810 is a photosensitive material.

In this implementation, the first material layer 110 may be transparent polyamide, a polarizing plate, or an optical adhesive, and the first filling material 800 may be photosensitive silver paste. Also, the second material layer 120 may be transparent polyamide, a polarizing plate, or an optical cement, and the second filling material 810 may be photosensitive silver paste.

In addition, the embodiment of the present application further provides a method for testing the dislocation amount of the display module 100, which may adopt the display module 100 in the above embodiment, and the testing method at least may include:

S201: the position of the first groove 111 on the first material layer 110 is marked as a first marking point 410 (see fig. 28), and the position of the second groove 121 on the second material layer 120 is marked as a second marking point 420 (see fig. 29);

specifically, referring to fig. 30, when marking the position of the first groove 111 on the first material layer 110, the first marking point 410 may be marked using the first transmitting device 310 and the first receiving device 320. In marking the location of the second recess 121 on the second material layer 120, the second marking point 420 may be marked with the second transmitting device 330 and the second receiving device 340.

It is to be understood that, in the embodiment of the present application, taking the marking of the position of the first groove 111 on the first material layer 110 as an example, when the front or back is selected to transmit or receive a signal, a determination may be made according to whether the first material layer 110 is transparent. For example, when the first material layer 110 is a transparent material, back-side transmission and reception signals are selected. When the first material layer 110 is a non-transparent material, front emission and reception signals are selected.

S202: measuring a first X-direction distance and a first Y-direction distance between the first groove 111 and the second groove 121;

S203: after the display module 100 is bent, measuring a second X-direction distance and a second Y-direction distance between the first groove 111 and the second groove 121;

s204: the X displacement difference between the first groove 111 and the second groove 121 is calculated according to the second X-direction distance and the first X-direction distance, and the Y displacement difference between the first groove 111 and the second groove 121 is calculated according to the second Y-direction distance and the first Y-direction distance, so as to obtain the amount of dislocation after bending of the display module 100.

In the method for testing the dislocation amount of the display module 100, taking the display module 100 may include two material layers, where the two material layers are a first material layer 110 and a second material layer 120, for example, by disposing at least one first groove 111 on the first material layer 110 and disposing a first filling layer 112 different from the material of the first material layer 110 in the first groove 111, disposing at least one second groove 121 on the second material layer 120 and disposing a second filling layer 122 different from the material of the second material layer 120 in the second groove 121, in this way, in the actual use, the positions of the first groove 111 on the first material layer 110 are marked, the positions of the second groove 121 on the second material layer 120 are marked, and a first X-direction distance and a first Y-direction distance between the first groove 111 and the second groove 121 are measured, for example, after the state change of the display module 100 occurs, the second X-direction distance between the first groove 111 and the second groove 121 is measured, and then the second X-direction distance between the second groove 121 and the second groove 121 is measured, and the second bending distance between the second groove 121 can be calculated according to the state of the first bending moment and the second bending moment, and the state of the second bending moment can be prevented from being influenced, and the state of the dislocation between the first bending moment and the second material layer can be calculated, and the state of the display module can be prevented from being destroyed, and the dislocation between the two opposite to the first bending moment and the first moment and the second bending moment can be accurately calculated according to the state.

In addition, it can be appreciated that, in the embodiment of the present application, when the display module 100 further includes the third material layer 130, the position of the fourth groove 131 on the third material layer 130 may be further marked as a third mark point 430 (see fig. 31). In this way, the amount of misalignment between the third material layer 130 and other material layers or adhesive layers can be conveniently measured, and specific testing methods are the same or similar to those described above and will not be repeated here.

When the display module 100 further includes the fourth material layer 140, the position of the fifth groove on the fourth material layer 140 may be further marked as a fourth mark point 440 (see fig. 32). In this way, the amount of misalignment between the fourth material layer 140 and other material layers or adhesive layers can be conveniently measured, and specific testing methods are the same or similar to those described above and will not be described in detail herein.

When the display module 100 further includes the fifth material layer 150, the position of the sixth groove on the fifth material layer 150 may be further marked with a fifth mark point 450 (see fig. 33). In this way, the amount of misalignment between the fifth material layer 150 and other material layers or adhesive layers can be conveniently measured, and specific testing methods are the same or similar to those described above and will not be repeated here.

Further, referring to fig. 32 and 33, in the embodiment of the present application, when the display module 100 further includes the first adhesive layer 170, the second adhesive layer 180, the third adhesive layer 190, or the fourth adhesive layer 191, the positions of the grooves opened on the first adhesive layer 170, the second adhesive layer 180, the third adhesive layer 190, or the fourth adhesive layer 191 may be also marked. In this way, it is possible to facilitate measurement of the amount of misalignment between the first adhesive layer 170, the second adhesive layer 180, the third adhesive layer 190, or the fourth adhesive layer 191 and other material layers or adhesive layers, and specific test methods are the same as or similar to those described above, and will not be described in detail herein.

In describing embodiments of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly coupled, indirectly coupled through an intermediary, in communication between two elements, or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

The embodiments of the application may be implemented or realized in any number of ways, including as a matter of course, such that the apparatus or elements recited in the claims are not necessarily oriented or configured to operate in any particular manner. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more unless specifically stated otherwise.

The terms first, second, third, fourth and the like in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "may include" and "have," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the embodiments of the present application, and are not limited thereto. Although embodiments of the present application have been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments may be modified or some or all of the technical features may be replaced with equivalents. Such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that it at least comprises:

at least two material layers arranged in a stacked manner;

at least one first groove is formed in a first material layer of the at least two material layers, a first filling layer is arranged in the first groove, and the material adopted by the first filling layer is different from the material adopted by the first material layer;

at least one second groove is formed in a second material layer of the at least two material layers, a second filling layer is arranged in the second groove, and the material adopted by the second filling layer is different from the material adopted by the second material layer;

the first filling layer is made of silicon or photosensitive silver paste, and the second filling layer is made of silicon or photosensitive silver paste;

when the display module is used, the initial positions of the first filling layer and the second filling layer are marked, after the state of the display module is changed, the positions of the first filling layer and the second filling layer are marked again, and then the dislocation quantity between the first material layer and the second material layer is obtained by calculating the displacement difference of the two marks.

2. The display module of claim 1, wherein an orthographic projection of the first groove in a thickness direction of the display module does not overlap with an orthographic projection of the second groove in the thickness direction of the display module.

3. The display module of claim 1, wherein the display module comprises: a continuous display region and a non-display region;

the non-display area is connected to an outer edge of the display area.

4. A display module according to claim 3, wherein the orthographic projection of the first recess in the thickness direction of the display module is located in the non-display area;

and the orthographic projection of the second groove in the thickness direction of the display module is positioned in the non-display area.

5. A display module according to claim 3, wherein the display area comprises: a plurality of pixel units distributed at intervals;

orthographic projection of the first groove in the thickness direction of the display module is not overlapped with the pixel unit;

orthographic projection of the second groove in the thickness direction of the display module is not overlapped with the pixel unit.

6. The display module according to any one of claims 1-5, wherein a surface of the first filling layer facing away from a bottom of the first recess is flush with a surface of the first material layer provided with the first recess;

One surface of the second filling layer, which faces away from the bottom of the second groove, is flush with one surface of the second material layer, which is provided with the second groove.

7. The display module assembly of any one of claims 1-5, wherein the first recess has a rectangular, cross-shaped, diamond-shaped, or triangular cross-sectional shape;

the cross section of the second groove is rectangular, cross-shaped, diamond-shaped or triangular.

8. The display module assembly of any one of claims 1-5, further comprising: at least one adhesive layer; the bonding layer is positioned between two adjacent material layers;

the bonding layer is provided with at least one third groove, a third filling layer is arranged in the third groove, and the material adopted by the third filling layer is different from the material adopted by the bonding layer.

9. The display module of claim 8, wherein an orthographic projection of the third groove in a thickness direction of the display module does not overlap with an orthographic projection of the first groove in the thickness direction of the display module;

or, the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the second groove in the thickness direction of the display module;

Or, the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the first groove in the thickness direction of the display module, and the orthographic projection of the third groove in the thickness direction of the display module is not overlapped with the orthographic projection of the second groove in the thickness direction of the display module.

10. The display module of claim 9, wherein a side of the third filling layer facing away from a bottom of the third groove is flush with a side of the adhesive layer where the third groove is located.

11. The display module assembly of any one of claims 9-10, wherein the third recess has a rectangular, cross-shaped, diamond-shaped, or triangular cross-sectional shape.

12. The display module of any one of claims 1-5, 9-10, wherein at least two of the material layers further comprise: a third material layer;

the third material layer is provided with at least one fourth groove, a fourth filling layer is arranged in the fourth groove, and the material adopted by the fourth filling layer is different from the material adopted by the third material layer.

13. The display module of claim 12, wherein a side of the fourth filler layer facing away from a bottom of the fourth recess is flush with a side of the third material layer where the fourth recess is located.

14. The display module of claim 13, wherein the fourth recess has a rectangular, cross-shaped, diamond-shaped, or triangular cross-sectional shape.

15. A display screen, comprising at least: a glass cover plate and a display module according to any one of the preceding claims 1-14;

the glass cover plate is covered on the display module.

16. An electronic device, comprising at least: a display screen as claimed in claim 15.

17. A method for manufacturing a display module, for manufacturing the display module according to any one of claims 1 to 14, comprising at least:

providing at least a first material layer and a second material layer;

at least one first groove is formed in the first material layer, and at least one second groove is formed in the second material layer;

a first filling layer is arranged in the first groove, wherein the material adopted by the first filling layer is different from the material adopted by the first material layer; a second filling layer is arranged in the second groove, wherein the material adopted by the second filling layer is different from the material adopted by the second material layer;

18. The method for manufacturing a display module according to claim 17, wherein the forming at least one first groove in the first material layer includes:

disposing a first photoresist on one side of the first material layer;

setting a first preset pattern on the first photoresist and exposing;

developing the first photoresist;

etching the first photoresist and the first material layer according to the first preset pattern;

removing the first photoresist to form at least one first groove on the first material layer;

the forming of at least one second groove on the second material layer includes:

Disposing a second photoresist on one side of the second material layer;

setting a second preset pattern on the second photoresist and exposing;

developing the second photoresist;

etching the second photoresist and the second material layer according to the second preset pattern;

and removing the second photoresist to form at least one second groove on the second material layer.

19. The method for manufacturing a display module according to claim 18, wherein the disposing a first filling layer in the first groove includes:

depositing a first filling material on one surface of the first material layer, which is provided with the first groove;

providing a third photoresist on a side of the first filling material facing away from the first material layer;

setting a third preset pattern on the third photoresist and exposing;

developing the third photoresist;

etching the third photoresist and the first filling material according to the third preset pattern;

removing the third photoresist to enable the residual first filling material to form a first filling layer in the first groove;

the second filling layer is arranged in the second groove, and the method comprises the following steps:

Depositing a second filling material on one surface of the second material layer, which is provided with the second groove;

disposing a fourth photoresist on a side of the second fill material facing away from the second material layer;

setting a fourth preset pattern on the fourth photoresist and exposing;

developing the fourth photoresist;

etching the fourth photoresist and the second filling material according to the fourth preset pattern;

and removing the fourth photoresist to enable the residual second filling material to form a second filling layer in the second groove.

20. The method according to claim 19, wherein the first material layer is made of polyamide; the second material layer is made of polyamide.

21. The method for manufacturing a display module according to claim 18, wherein the disposing a first filling layer in the first groove includes:

a first filling material is arranged on one surface of the first material layer, which is provided with the first groove, in a silk screen manner;

setting a third preset pattern on the first filling material and exposing;

developing the first filling material to form a first filling layer in the first groove;

Wherein the first filling material is a photosensitive material;

a second filling material is arranged on one surface of the second material layer, which is provided with the second groove, in a silk screen manner;

setting a fourth preset pattern on the second filling material and exposing;

developing the second filling material to form a second filling layer in the second groove;

wherein the second filling material is a photosensitive material.

22. The method of claim 21, wherein the first material layer is transparent polyamide, a polarizing plate, or an optical adhesive;

the second material layer is transparent polyamide, a polarizing plate or optical adhesive.

23. A method for testing the dislocation quantity of a display module, which adopts the display module according to any one of claims 1 to 14, and is characterized by comprising at least:

marking the position of a first groove on the first material layer and marking the position of a second groove on the second material layer;

measuring a first X-direction distance and a first Y-direction distance between the first groove and the second groove;

after the display module is bent, measuring a second X-direction distance and a second Y-direction distance between the first groove and the second groove;

And calculating the X displacement difference between the first groove and the second groove according to the second X distance and the first X distance, and calculating the Y displacement difference between the first groove and the second groove according to the second Y distance and the first Y distance to obtain the dislocation amount of the display module after bending.