Display module, preparation method thereof and electronic device

Abstract

This application provides a display module and its manufacturing method, as well as an electronic device. The manufacturing method of the display module includes: providing a support film and a screen assembly, and placing the screen assembly on the support film; wherein, the screen assembly includes a stacked display body and a protective film, the protective film being located on the side of the display body facing away from the support film, and the screen assembly having an effective portion and a portion to be cut along a first direction; the portion of the support film exposed above the display body is an outward expansion portion; along the first direction, the sum of the length of the portion to be cut and the length of the outward expansion portion on the same side is greater than or equal to a first threshold; and a clearance structure is formed at a preset position of the outward expansion portion; removing the protective film using a film-tearing element, thereby exposing the side of the display body facing away from the support film; wherein, the starting position of the film-tearing element during film tearing corresponds to the position of the clearance structure. This manufacturing method of the display module can avoid adhesion between the film-tearing element and the support film, reducing the risk of damage to the display body.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display module and its manufacturing method, as well as an electronic device. Background Technology

[0002] Organic Light-Emitting Diode (OLED) display panels used in electronic devices are formed by cutting a large panel (usually requiring two cuts). During the manufacturing process of an OLED display module, a support film is attached beneath the display body. This support film reinforces and supports the display body, preventing malfunctions. Typically, the area of ​​the support film is larger than the area of ​​the display body, ensuring that all parts of the display are supported. After the first cut and before the second cut, the support film is attached to the side of the display body opposite to the light-emitting direction; together, they form the display module. During the second cut, any excess portion of the display module is removed; to ensure successful cutting, the width of this excess portion must meet certain dimensions.

[0003] In related technologies, increasing the layout ratio of display panels on a large display board is generally achieved by reducing the spacing between the display panels. After reducing the panel spacing, to ensure that the excess space in the display module meets size requirements, the width of the support film is generally increased. However, increasing the width of the support film makes it prone to sticking to the tear-off element. Consequently, during the subsequent tear-off process, the tear-off element may lift the display screen through the support film, rendering the display screen unusable. Summary of the Invention

[0004] This application provides a display module and its manufacturing method, as well as an electronic device, which aims to solve the problem that the support film easily adheres to the film-removing element, and that during the subsequent film-removing process using the film-removing element, the film-removing element lifts up the display screen body through the support film, resulting in the display screen body being scrapped.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a method for manufacturing a display module, comprising:

[0006] A support film and a screen assembly are provided, and the screen assembly is disposed on the support film; wherein, the screen assembly includes a stacked display screen and a protective film, the protective film is located on the side surface of the display screen facing away from the support film, and the screen assembly has an effective portion and a portion to be cut along a first direction; the portion of the support film exposed above the display screen is an outward expansion portion; along the first direction, the sum of the length of the portion to be cut and the length of the outward expansion portion on the same side is greater than or equal to a first threshold; and a clearance structure is formed at a preset position of the outward expansion portion;

[0007] The protective film is removed using a film-removing element, exposing the surface of the display screen facing away from the supporting film; wherein the starting position of the film-removing element during film removal corresponds to the position of the avoidance structure.

[0008] The avoidance structure is an avoidance groove formed at a preset position of the outward expansion portion.

[0009] Wherein, along the first direction, both sides of the support membrane expose the screen assembly and form the outward expansion portion; the outward expansion portion on each side forms a clearance structure.

[0010] The outward expansion portion includes a first outward expansion portion and a second outward expansion portion; along the first direction, the second outward expansion portion is located on the side of the first outward expansion portion away from the screen assembly; and along the second direction perpendicular to the first direction, the second outward expansion portion is recessed inward by a second threshold relative to the first outward expansion portion to define the clearance groove with the first outward expansion portion.

[0011] Preferably, the first threshold is not less than 2 mm;

[0012] Preferably, the length of the first outward expansion portion along the first direction is less than or equal to 0.6 mm;

[0013] Preferably, the second threshold is 4.2-4.8 mm;

[0014] Preferably, along the first direction, the length of the portion to be cut is greater than or equal to 0.6 mm and less than or equal to 0.85 mm; the length of the second outward expansion portion is greater than or equal to 0.4 mm and less than or equal to 1.6 mm.

[0015] The avoidance structure includes a first avoidance groove and a second avoidance groove;

[0016] The outward expansion portion includes a third outward expansion portion, a fourth outward expansion portion, and a fifth outward expansion portion; the third outward expansion portion is provided at least around a first side edge of the display screen body, a second side edge adjacent to the first side edge, and a third side edge opposite to the first side edge; the first side edge and the third side edge are arranged sequentially along the first direction;

[0017] The fourth outward expansion is disposed corresponding to the second side and is located on the side of the third outward expansion away from the display screen body; along the first direction, at least one end of the fourth outward expansion is recessed inward by a third threshold relative to the third outward expansion to define and form the first clearance groove with the third outward expansion;

[0018] The fifth outward expansion is disposed corresponding to the first side and / or the third side, and extends along a second direction perpendicular to the first direction, and is located on the side of the third outward expansion away from the display screen body; along the second direction, one end of the fifth outward expansion facing the fourth outward expansion is recessed inward by a fourth threshold relative to the third outward expansion to define and form the second clearance groove with the third outward expansion;

[0019] Preferably, the length of the portion of the third expansion corresponding to the first side and / or the portion of the third side along the first direction is no greater than 0.6 mm; the length of the portion of the third expansion corresponding to the second side along the second direction is no greater than 0.8 mm; the length of the fourth expansion along the second direction is 0.2 mm to 0.6 mm; and the length of the fifth expansion along the first direction is 0.4 mm to 0.8 mm.

[0020] The support film has an adhesive side surface facing the screen assembly.

[0021] Before the step of removing the protective film using a film-peeling element and exposing the side of the display screen facing away from the supporting film, the method further includes:

[0022] At least the adhesiveness of the extended portion at the predetermined position on one side surface facing the screen assembly is removed to form the avoidance structure at the predetermined position of the extended portion.

[0023] The supporting membrane is an anti-adhesion membrane;

[0024] The step of removing at least the adhesive at the predetermined position on the side surface of the outwardly extended portion facing the screen assembly specifically includes:

[0025] The adhesive on the side surface of the entire extended portion facing the screen assembly is removed by ultraviolet light irradiation;

[0026] Preferably, the step of removing the adhesive from the entire outer surface of the extended portion facing the screen assembly by ultraviolet light irradiation includes:

[0027] The display screen body is covered with a mask, exposing the entire outer extension; the entire support film is irradiated with ultraviolet light.

[0028] The step of removing the protective film using a film-peeling element and exposing the side of the display screen facing away from the supporting film further includes:

[0029] A polarizing film is stacked on the side of the display body opposite to the supporting film to form a module preform;

[0030] The module preform is cut along the interface between the effective portion and the portion to be cut to obtain a display module.

[0031] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a display module, which is prepared by the above-mentioned display module preparation method.

[0032] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an electronic device, including the display module mentioned above.

[0033] The beneficial effects of this application are as follows: Unlike the prior art, this application provides a display module and its manufacturing method and electronic device. During the film peeling process, the position of the film peeling element corresponds with that of the avoidance structure, which effectively avoids the film peeling element from sticking to the outer expansion of the support film. This can effectively prevent the display screen from being lifted by the support film that is stuck to the film peeling element, thus preventing the display screen from being scrapped. Attached Figure Description

[0034] Figure 1 A flowchart illustrating a method for fabricating a display module according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of a screen assembly disposed on a support membrane according to an embodiment of this application;

[0036] Figure 3 for Figure 2 A top view of the structure shown;

[0037] Figure 4 A top view of a display screen body disposed on a support film, according to another embodiment of this application;

[0038] Figure 5 A schematic diagram illustrating the use of light to remove the adhesiveness of the outer portion of the support membrane;

[0039] Figure 6 This is a schematic diagram of the structure of a module prefabricated body provided in one embodiment of this application;

[0040] Figure 7 A simplified structural diagram of an electronic device provided in an embodiment of this application;

[0041] Explanation of reference numerals in the attached figures:

[0042] 100-Display module; 1-Support film; 2-Screen assembly; 3-Polarizer; 4-Optical adhesive; 5-Reinforcing film; 11-Outer expansion section; 21-Effective section; 22-Section to be cut; 40-Light shield; 111-First outer expansion section; 112-Second outer expansion section; 113-Third outer expansion section; 114-Fourth outer expansion section; 115-Fifth outer expansion section; 101-Avoidance structure; 201-First side; 202-Second side; 203-Third side. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] In existing related technologies, when manufacturing OLED display modules, a support film needs to be attached beneath the display body to reinforce and support it. To increase the display body's layout ratio on a large board, the spacing between the display bodies is usually reduced. However, reducing the spacing generally requires increasing the width of the support film exposed above the display body to ensure smooth secondary cutting. But with increased exposed support film width, the tear-off element is prone to sticking to the exposed portion of the support film as it contacts the protective film on the display body. This can lead to the tear-off element lifting the display body through the support film during subsequent tear-off, rendering the display body unusable.

[0047] Based on this, the present application provides a display module and its manufacturing method, as well as an electronic device. The manufacturing method of the display module can meet the requirements of the support film to provide sufficient support for the display screen body and the cutting requirements of the display module for the edge width, while avoiding the adhesion between the support film and the tear-off element, thereby avoiding the situation where the display screen body is lifted up by the support film and is scrapped.

[0048] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] See Figures 1 to 5 , Figure 1 This is a flowchart of a method for manufacturing a display module according to an embodiment of this application. Figures 2 to 5 yes Figure 1 The diagram shows a structural schematic corresponding to the specific process of fabricating the display module. This application provides a method for fabricating a display module, which includes:

[0050] Step S1: Provide a support film and a screen assembly, and place the screen assembly on the support film; wherein, the screen assembly includes a stacked display screen and a protective film, the protective film is located on the side surface of the display screen away from the support film, and the screen assembly has an effective part and a part to be cut along a first direction; the part of the support film exposed above the display screen is an outward expansion part; along the first direction, the sum of the length of the part to be cut and the length of the outward expansion part on the same side is greater than or equal to a first threshold; and a clearance structure is formed at the preset position of the outward expansion part.

[0051] The first threshold can be no less than 2mm, for example, the first threshold is 2mm; its specific size can be set according to the actual situation. The following embodiments of this application are all described with the first threshold preferably being 2mm as an example.

[0052] Specifically, screen assembly 2 includes a stacked display screen (not shown) and a protective film (not shown). The display screen has a display surface and a non-display surface arranged opposite to each other, and the display surface of the display screen is used to display images. For example... Figure 2 As shown, Figure 2This is a schematic diagram of a display screen body disposed on a support film according to an embodiment of this application; the non-display surface of the display screen body faces the support film 1 and is disposed on the support film 1. A protective film is disposed on the display surface of the display screen body to protect the display screen body from mechanical damage caused by the external environment.

[0053] In one specific embodiment, combined with Figure 2 and Figure 3 , Figure 3 for Figure 2 The diagram shows a top view of the structure. The screen assembly 2 has an effective portion 21 and a portion to be cut 22 along a first direction X, with the portions to be cut 22 located on both sides of the effective portion 21. The length of the portion to be cut 22 along the first direction X is greater than or equal to 0.6 mm and less than or equal to 0.85 mm; this increases the layout rate of the screen assembly 2 on the large board; cutting the large board yields several screen assemblies 2. It should be noted that the first direction X can be any direction passing through the screen assembly 2. Preferably, when the screen assembly 2 is rectangular (this application uses this as an example), the first direction X can be parallel to the length direction of the screen assembly 2 or any direction along the length direction, so that the subsequent film-removing element can peel off the protective film of the screen assembly 2.

[0054] In one embodiment, the side surface of the support film 1 facing the display body may be adhesive, and the non-display surface of the display body is bonded and fixed to the support film 1.

[0055] Please continue reading. Figure 2 or Figure 3 After the screen assembly 2 is placed on the support film 1, the orthographic projection of the screen assembly 2 onto the support film 1 is located within the support film 1. The portion of the support film 1 covered by the screen assembly 2 is the support portion; the portion of the support film 1 exposed above the display screen along the first direction X is the outward expansion portion 11, i.e., the orthographic projection of the support film 1 onto the display screen is located outside the display screen. The outward expansion portion 11 provides sufficient support, ensuring that every part of the screen assembly 2 is supported by the support film 1, thus guaranteeing the smooth progress of subsequent secondary cutting. During secondary cutting, the outward expansion portion 11 of the support film 1 and the portion of the screen assembly 2 to be cut 22 will be cut; while the portion of the support film 1 corresponding to the effective portion 21 of the screen assembly 2, and the effective portion 21 of the display screen, will be retained, forming a display module. Along the first direction X, the sum of the length of the portion to be cut 22 on one side of the effective portion 21 of the screen assembly 2 and the length of the outward expansion portion 11 of the support film 1 on the same side is greater than or equal to a first threshold, thereby meeting the edge length cutting requirements of the display module and ensuring the smooth progress of secondary cutting.

[0056] In one specific embodiment, the length of the portion to be cut 22 is greater than or equal to 0.6 mm and less than or equal to 0.85 mm; and along the first direction X, the length of the outward expansion portion 11 is greater than or equal to 1 mm and less than or equal to 1.6 mm; for example, the length of the outward expansion portion 11 can be 1.0 mm, 1.15 mm, 1.2 mm, or 1.4 mm, etc. Those skilled in the art will understand that, in specific implementations, when the length of the outward expansion portion 11 is greater than 0.6 mm, the support film 1 is prone to sticking to the film-removing element used to remove the protective film, causing the display screen to be lifted by the support film 1 and rendered unusable during the film-removal process. Therefore, in this embodiment, an avoidance structure 101 is formed at a preset position of the outward expansion portion 11, and during the film-removal process, the position of the film-removing element corresponds to that of the avoidance structure 101, effectively preventing the film-removing element from sticking to the outward expansion portion 11 of the support film 1, thereby effectively preventing the display screen from being lifted by the support film 1 that is stuck to the film-removing element, thus preventing the display screen from being rendered unusable. In addition, through the above settings, the screen layout rate of each large board can also be improved, from the original 5 rows and 18 columns per large board to 5 rows and 20 columns, the output of each large board increases by 10 pieces (Pieces, Pcs), and the screen layout rate increases from 90 Pcs / large board to 100 Pcs / large board.

[0057] In one embodiment, see Figure 3 The clearance structure 101 on the outer expansion portion 11 can be a clearance groove formed at a preset position on the outer expansion portion 11. During the subsequent removal of the protective film using the film-removing element, the portion of the film-removing element corresponding to the outer expansion portion 11 is exposed through the clearance groove on the side surface of the outer expansion portion 11 facing away from the screen assembly 2. That is, a portion of the support film 1 at the preset position on the outer expansion portion 11 is hollowed out to form a clearance groove. In this way, when the clearance position of the film-removing element and the support film 1 are subsequently set, the portion of the film-removing element corresponding to the clearance position can be suspended to avoid contact between the film-removing element and the preset position of the outer expansion portion 11, thereby preventing the film-removing element from sticking to the support film 1 and causing damage to the display screen.

[0058] It should be noted that the "avoidance groove" involved in this application refers to a through hole penetrating the first surface of the outwardly expanding portion 11 and the second surface opposite to the first surface, and the screen assembly 2 is disposed on the first surface of the support film 1. It can be understood that, as Figure 3 As shown, if the clearance groove is formed at the edge of the expansion portion 11, the clearance groove is equivalent to a notch formed at the edge of the expansion portion 11.

[0059] Specifically, such as Figure 3As shown, along the first direction X, both sides of the support film 1 expose the screen assembly 2 and form an outward expansion portion 11. Each outward expansion portion 11 on each side has a clearance structure 101 to prevent the film tearing element from adhering to either side of the support film 1. In some embodiments, the lengths of the outward expansion portions 11 on both sides along the first direction X may be the same or different. This application does not limit this, as long as the length of the outward expansion portion 11 on each side along the first direction X is greater than or equal to 1 mm and less than or equal to 1.6 mm; for example, the length of the outward expansion portion 11 may be 1.0 mm, 1.15 mm, 1.2 mm, or 1.4 mm, etc.

[0060] Of course, after the screen assembly 2 is placed on the support film 1, the screen assembly 2 can be exposed around the support film 1, forming multiple outward expansions 11. At this time, the avoidance structure 101 can be formed only at a preset position along the preset direction of the outward expansion 11, or the avoidance structure 101 can be formed on every two oppositely arranged outward expansions 11. In this way, the film tearing element can be selected to correspond to any pair of avoidance structures 101 to perform film tearing processing, which is highly flexible.

[0061] like Figure 3 As shown, in one embodiment, each side of the extended portion 11 includes a first extended portion 111 and a second extended portion 112; and along the first direction X, the second extended portion 112 is located on the side of the first extended portion 111 away from the screen assembly 2. Along the second direction Y, which is perpendicular to the first direction X, the second extended portion 112 is recessed by a second threshold a relative to the first extended portion 111 to define a clearance groove with the first extended portion 111. That is, along the second direction Y, the length of the second extended portion 112 is less than the length of the first extended portion 111, and along the second direction Y, the difference between the length of the first extended portion 111 and the length of the second extended portion 112 is the second threshold a. The second threshold a can be determined based on the width of the orthographic projection of the film-removing element on the support film 1, as long as it ensures that the film-removing element does not contact the support film 1, or that excessive adhesion does not cause the display screen to be lifted during the film-removing process. In one embodiment, the second threshold a is 4.2-4.8 mm, so as to avoid the tearing element from contacting the second outer extension 112 of the support film 1 during the subsequent removal of the protective film using the tearing element, thus avoiding adhesion between the tearing element and the support film 1; or the tearing element will not have a large adhesion area with the second outer extension 112 of the support film 1, thus avoiding the situation where the display screen body is lifted during the tearing process due to an excessively large adhesion area.

[0062] Specifically, one edge of the first outward expansion 111 along the second direction Y is flush with the same edge of the second outward expansion 112; and both the side edge of the first outward expansion 111 and the side edge of the second outward expansion 112 are flush with the side edge of the screen assembly 2. The other edge of the first outward expansion 111 along the second direction Y is flush with the edge of the screen assembly 2 on that side, and the other edge of the second outward expansion 112 along the second direction Y is parallel to but not aligned with the same edge of the first outward expansion 111, thereby defining and forming an avoidance groove.

[0063] In this embodiment, the length c of the first outward expansion 111 along the first direction X is less than or equal to 0.6 mm. This is to prevent the tearing element from contacting the portion of the first outward expansion 111 corresponding to the clearance groove during the subsequent removal of the protective film using the tearing element, which could cause the tearing element and the support film 1 to stick together. Considering the aforementioned condition that the length of the outward expansion 11 along the first direction X must be greater than or equal to 1 mm and less than or equal to 1.6 mm, it can be easily calculated that the length b of the second outward expansion 112 along the first direction X must be greater than or equal to 0.4 mm and less than or equal to 1.6 mm. This ensures that the length of the outward expansion 11 along the first direction X is greater than or equal to 1 mm and less than or equal to 1.6 mm, thereby guaranteeing smooth secondary cutting.

[0064] See Figure 4 , Figure 4 This is a top view of a display screen body disposed on a support film according to another embodiment of this application; in this embodiment, the outward expansion portion 11 includes a third outward expansion portion 113, a fourth outward expansion portion 114, and a fifth outward expansion portion 115. The third outward expansion portion 113 is disposed at least around a first side edge 201 of the display screen body, a second side edge 202 adjacent to the first side edge 201, and a third side edge 203 opposite to the first side edge 201. The first side edge 201 and the third side edge 203 are sequentially disposed along a first direction X; that is, along the first direction X, one side of the display screen body is the first side edge 201, the other side is the third side edge 203, and the second side edge 202 is located between the first side edge 201 and the third side edge 203. Specifically, as shown... Figure 4 As shown, the portion of the support film 1 that exposes the first side 201 and the third side 203 of the display body on both sides along the first direction X, and the portion of the support film 1 that exposes the second side 202 of the display body along the second direction Y, together form the third outward expansion portion 113.

[0065] The fourth outward expansion 114 is disposed corresponding to the second side 202 and extends along the first direction X, located on the side of the third outward expansion 113 away from the display body along the second direction Y; and along the first direction X, both ends of the fourth outward expansion 114 are respectively recessed inward relative to the third outward expansion 113 by a third threshold n, so as to define two first clearance grooves with the third outward expansion 113; wherein, the third threshold n is 4.2-4.8mm. Of course, in other embodiments, only one end of the fourth outward expansion 114 along the first direction X may be recessed inward relative to the third outward expansion 113 by a third threshold n, so as to define one first clearance groove with the third outward expansion 113.

[0066] In this embodiment, along the first direction X, a fifth outward expansion portion 115 is provided on each side of the display body, and the two fifth outward expansion portions 115 are respectively provided corresponding to the first side 201 and the third side 203, and extend along the second direction Y. Along the first direction X, one of the two fifth outward expansion portions 115 is located on the side of the third outward expansion portion 113 near the first side 201 away from the display body, and the other is located on the side of the third outward expansion portion 113 near the third side 203 away from the display body. Along the second direction Y, one end of the fifth outward expansion portion 115 facing the fourth outward expansion portion 114 is recessed inward by a fourth threshold m relative to the third outward expansion portion 113 to define and form a second clearance groove with the third outward expansion portion 113; wherein, the fourth threshold m is 4.2-4.8mm. In this embodiment, the first clearance groove and the second clearance groove cooperate to form a clearance structure 101, so that during the subsequent film peeling process, the film peeling element corresponds to the clearance structure 101, avoiding adhesion between the film peeling element and the support film 1.

[0067] It is understood that in this embodiment, the third expansion portion 113, the fourth expansion portion 114, and the fifth expansion portion 115 constitute the expansion portion 11 of the support membrane 1, and the length of the expansion portion 11 along the first direction X and the length along the second direction Y are both greater than or equal to 1 mm and less than or equal to 1.6 mm. Specifically, as shown... Figure 4 As shown, the length d of the third expansion portion 113 corresponding to the first side 201 and the third side 203 along the first direction X is no greater than 0.6 mm; and the length e of the portion of the third expansion portion 113 corresponding to the second side 202 along the second direction Y is no greater than 0.8 mm. This configuration avoids the tearing element from contacting the portion of the third expansion portion 113 corresponding to the first and second clearance groove positions during the subsequent removal of the protective film using the tearing element, thus preventing adhesion between the tearing element and the support film 1.

[0068] Based on the fact that the lengths of the expanded portion 11 along the first direction X and the second direction Y are both greater than or equal to 1 mm and less than or equal to 1.6 mm, it can be calculated that the length f of the fifth expanded portion 115 along the first direction X must be greater than or equal to 0.4 mm and less than or equal to 1.6 mm; and the length g of the fourth expanded portion 114 along the second direction Y must be greater than or equal to 0.2 mm and less than or equal to 1.6 mm, so as to ensure that the lengths of the expanded portion 11 along the first direction X and the second direction Y are both greater than or equal to 1 mm and less than or equal to 1.6 mm, thereby ensuring that the secondary cutting can be carried out smoothly.

[0069] In another embodiment, the support film 1 has an adhesive surface on the side facing the screen assembly 2; the avoidance structure 101 is the portion of the support film 1 that loses its adhesiveness. In this embodiment, after step S1, the method further includes: removing at least the adhesiveness of the outwardly extended portion 11 at a predetermined position on the side facing the screen assembly 2, so as to form the avoidance structure 101 at at least a predetermined position on the outwardly extended portion 11.

[0070] The supporting film 1 can be an anti-adhesion film; the anti-adhesion film can be a light-induced anti-adhesion film, which significantly reduces or eliminates its surface adhesion after being irradiated with light. In this embodiment, see [reference needed]. Figure 5 , Figure 5 This is a schematic diagram of removing the adhesiveness of the outer extension of the support film using light irradiation. The adhesiveness of the entire outer extension facing the screen assembly 2 can be removed by ultraviolet light irradiation to avoid the film tearing element sticking to the support film 1 when it comes into contact with the outer extension 11 of the support film 1 during the subsequent removal of the protective film using the film tearing element.

[0071] Specifically, a mask can be used to cover the display screen body, exposing the entire outer expansion portion; then, ultraviolet light can be used to irradiate the entire support film. Specifically, such as... Figure 5 As shown, a light-shielding plate 40 is provided on the side of the screen assembly 2 away from the support film 1, and the orthographic projection of the light-shielding plate 40 on the support film 1 coincides with the orthographic projection of the screen assembly 2 on the support film 1, so as to block the ultraviolet light shining on the screen assembly 2 and avoid affecting the adhesion of the part where the support film 1 and the screen assembly 2 are attached, thus avoiding the risk of the screen assembly 2 falling off. The entire support film 1 is irradiated with ultraviolet light from the side of the light-shielding plate 40 away from the screen assembly 2 to remove the adhesion of the entire extended portion 11, and an avoidance structure 101 is formed on the entire extended portion 11 to prevent the film-removing element from sticking to the support film 1 during the subsequent process of removing the protective film using the film-removing element.

[0072] Of course, in other embodiments, a mask can be used to cover the display screen body and part of the outward expansion 11, and expose the preset position of the outward expansion 11 to remove the stickiness of the preset position of the outward expansion 11, and form an avoidance structure 101 at the preset position of the outward expansion 11 to avoid the tearing element from sticking to the support film 1 during the subsequent process of removing the protective film using the tearing element.

[0073] Step S2: Use the film-removing element to remove the protective film and expose the side of the display screen that is away from the supporting film; wherein, the starting position of the film-removing element during film removal corresponds to the position of the avoidance structure.

[0074] In the specific implementation process, step S2 specifically includes:

[0075] Step S21: Align the film-tearing element with the clearance groove and ensure it is in full contact with the protective film.

[0076] In the specific implementation process, when the film-tearing element is set in correspondence with the clearance groove, the part of the film-tearing element corresponding to the second outer expansion 112 is exposed through the clearance groove on the side surface of the outer expansion 11 that is away from the screen assembly 2; the film-tearing element and the protective film of the screen assembly 2 are in full contact.

[0077] Step S22: Use the film-removing element to remove the protective film and expose the side of the display screen that is away from the support film.

[0078] In the specific implementation process, the film-peeling element is preferably a film-peeling roller; the film-peeling roller moves along the second direction Y, the protective film is attached to the film-peeling roller, and as the film-peeling roller rolls, the protective film is peeled off from the display screen body, so that the surface of the display screen body away from the support film 1 is exposed.

[0079] In some specific implementations, after step S2, the following may be further included:

[0080] Step S3: Stack a polarizer on the side of the display screen away from the support film to form a module preform.

[0081] Specifically, the product structure after step S3 can be found in [reference needed]. Figure 6 , Figure 6 This is a schematic diagram of the structure of a module preform provided in one embodiment of this application. The structure and performance of the polarizer 3 are the same as or similar to those of the prior art, and can be referred to the prior art for details, which will not be repeated here.

[0082] Of course, in the specific implementation process, it also includes setting optical adhesive 4 (Optically Clear Adhesive, OCA) and heavy film 5 on the side of the polarizer away from the display screen body. The specific structure and function of these structural layers are similar to the specific structure and function of the relevant structural layers involved in the preparation process of existing display modules. For details, please refer to the prior art.

[0083] Step S4: Cut the module preform along the interface between the effective part and the part to be cut to obtain the display module.

[0084] Specifically, laser cutting can be used to cut the module preform along the interface M between the effective part 21 and the part to be cut 22 of the display body in the second direction Y to obtain the display module.

[0085] This application provides a method for manufacturing a display module, which includes: providing a support film 1 and a screen assembly 2, and placing the screen assembly 2 on the support film 1; wherein the screen assembly 2 includes a stacked display screen and a protective film, the protective film being located on the side surface of the display screen facing away from the support film 1, and the screen assembly 2 having an effective portion 21 and a portion to be cut 22 along a first direction X; along the first direction X, the portion of the support film 1 exposed above the display screen is an outward expansion portion 11; along the first direction X, the sum of the length of the portion to be cut 22 and the length of the outward expansion portion 11 on the same side is greater than or equal to a first threshold; and a clearance structure 101 is formed at a preset position of the outward expansion portion 11; then a film-tearing element is correspondingly disposed with the clearance structure 101 and contacts the protective film to remove the protective film using the film-tearing element and expose the side surface of the display screen facing away from the support film 1. This method increases the size of the outer expansion portion 11 so that the sum of the length of the portion to be cut 22 and the length of the outer expansion portion 11 on the same side is greater than or equal to a first threshold, thereby meeting the cutting requirements of the display module for edge length. Simultaneously, by forming an avoidance structure 101 at a preset position on the support film 1, and ensuring that the tearing element aligns with the avoidance structure 101 during the tearing process, adhesion between the tearing element and the outer expansion portion 11 of the support film 1 is effectively prevented. This effectively avoids the display screen being lifted by the support film 1 adhered to the tearing element, thus preventing the display screen from being scrapped. Furthermore, through the above settings, the screen layout rate of each large panel is also improved, increasing from 5 rows and 18 columns per large panel to 5 rows and 20 columns, increasing the output of each large panel by 10 pieces (Pieces, Pcs), and raising the screen layout rate from 90 Pcs / large panel to 100 Pcs / large panel.

[0086] This application provides a display module, which is manufactured using the method described in the above embodiments. The specific structure and function of the display module are detailed in the above descriptions and will not be repeated here. The display module can be a product or component with display function, such as an OLED display panel. The display module also includes structures such as a cover plate, which are the same as or similar to the relevant structures of existing display devices. Specific details can be found in the prior art and will not be repeated here.

[0087] See Figure 7 , Figure 7 This is a simplified structural diagram of an electronic device provided according to an embodiment of this application. This application provides an electronic device including the display module 100 described above. The specific structure and function of the display module 100 can be found in the aforementioned descriptions and will not be repeated here. The electronic device can be a product or component with display functionality, such as a mobile phone, tablet computer, laptop computer, or television. The electronic device also includes a motherboard, control circuitry, etc., whose structures are the same as or similar to those of existing display devices; specific details can be found in the prior art and will not be repeated here.

[0088] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0089] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for manufacturing a display module, characterized by, include: A support film and a screen assembly are provided, and the screen assembly is disposed on the support film; wherein, the screen assembly includes a stacked display screen and a protective film, the protective film is located on the side surface of the display screen facing away from the support film, and the screen assembly has an effective portion and a portion to be cut along a first direction; the portion of the support film exposed above the display screen is an outward expansion portion; along the first direction, the sum of the length of the portion to be cut and the length of the outward expansion portion on the same side is greater than or equal to a first threshold; and a clearance structure is formed at a preset position of the outward expansion portion; The protective film is removed using a film-removing element, exposing the surface of the display screen facing away from the supporting film; wherein the starting position of the film-removing element during film removal corresponds to the position of the avoidance structure.

2. The method for preparing a display module according to claim 1, characterized in that, The avoidance structure is an avoidance groove formed at a preset position of the outward expansion portion.

3. The method for preparing a display module according to claim 2, characterized in that, Along the first direction, the screen assembly is exposed on both sides of the support membrane and the outward expansion is formed; the outward expansion on each side forms a clearance structure.

4. The method for preparing the display module according to claim 2 or 3, characterized in that, The outward expansion includes a first outward expansion and a second outward expansion; along the first direction, the second outward expansion is located on the side of the first outward expansion away from the screen assembly; and along a second direction perpendicular to the first direction, the second outward expansion is recessed inward by a second threshold relative to the first outward expansion to define the clearance groove with the first outward expansion. Preferably, the first threshold is not less than 2 mm; Preferably, the length of the first outward expansion portion along the first direction is less than or equal to 0.6 mm; Preferably, the second threshold is 4.2-4.8 mm; Preferably, along the first direction, the length of the portion to be cut is greater than or equal to 0.6 mm and less than or equal to 0.85 mm; the length of the second outward expansion portion is greater than or equal to 0.4 mm and less than or equal to 1.6 mm.

5. The method for preparing a display module according to claim 2, characterized in that, The avoidance structure includes a first avoidance groove and a second avoidance groove; The outward expansion portion includes a third outward expansion portion, a fourth outward expansion portion, and a fifth outward expansion portion; the third outward expansion portion is provided at least around a first side edge of the display screen body, a second side edge adjacent to the first side edge, and a third side edge opposite to the first side edge; the first side edge and the third side edge are arranged sequentially along the first direction; The fourth outward expansion is disposed corresponding to the second side and is located on the side of the third outward expansion away from the display screen body; along the first direction, at least one end of the fourth outward expansion is recessed inward by a third threshold relative to the third outward expansion to define and form the first clearance groove with the third outward expansion; The fifth outward expansion is disposed corresponding to the first side and / or the third side, and is located on the side of the third outward expansion away from the display screen body; along the second direction perpendicular to the first direction, one end of the fifth outward expansion facing the fourth outward expansion is recessed inward relative to the third outward expansion by a fourth threshold, so as to define the second clearance groove with the third outward expansion; Preferably, the length of the portion of the third expansion corresponding to the first side and / or the portion of the third side along the first direction is no greater than 0.6 mm; the length of the portion of the third expansion corresponding to the second side along the second direction is no greater than 0.8 mm; the length of the fourth expansion along the second direction is 0.2 mm to 0.6 mm; and the length of the fifth expansion along the first direction is 0.4 mm to 0.8 mm.

6. The method for preparing a display module according to claim 1, characterized in that, The surface of the support film facing the screen assembly is adhesive; Before the step of removing the protective film using a film-peeling element and exposing the side of the display screen facing away from the supporting film, the method further includes: At least the adhesive on the side surface of the extended portion facing the screen assembly at the predetermined position is removed to form the avoidance structure at the predetermined position of the extended portion.

7. The method for preparing a display module according to claim 6, characterized in that, The supporting membrane is an anti-adhesion membrane; The step of removing at least the adhesive at the predetermined position on the side surface of the outwardly extended portion facing the screen assembly specifically includes: The adhesive on the side surface of the entire extended portion facing the screen assembly is removed by ultraviolet light irradiation; Preferably, the step of removing the adhesive from the entire outer surface of the extended portion facing the screen assembly by ultraviolet light irradiation includes: The display screen body is covered with a mask, exposing the entire outer extension; the entire support film is irradiated with ultraviolet light.

8. The method for preparing a display module according to claim 1, characterized in that, After the step of removing the protective film using a film-peeling element and exposing the side of the display screen facing away from the supporting film, the method further includes: A polarizing film is stacked on the side of the display body opposite to the supporting film to form a module preform; The module preform is cut along the interface between the effective portion and the portion to be cut to obtain a display module.

9. A display module, characterized by It is prepared by the method of preparing the display module as described in any one of claims 1-8.

10. An electronic device, comprising: Includes the display module as described in claim 9.

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