Display device and manufacturing method thereof

Abstract

The invention relates to a display device and a manufacturing method thereof. The display device comprises a packaging cover plate; the optical adhesive layer comprises a first surface and a second surface which are opposite to each other, the first surface of the optical adhesive layer is attached to one side of the packaging cover plate, the second surface of the optical adhesive layer comprises a first attaching area and a second attaching area, and the second attaching area is located on the periphery of the first attaching area; the display side of the display screen body is attached to the first attaching area of the second surface of the optical adhesive layer; the attaching part of the middle frame is attached to the second attaching area of the second surface of the optical adhesive layer; thus, the same optical adhesive layer is adopted, the packaging cover plate and the middle frame are attached while the packaging cover plate and the display screen body are attached, and in other words, the display module and the middle frame are attached at the same time.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device and a manufacturing method thereof. Background Art

[0002] With the development of display technology, display modules are gradually and widely used in various daily products.

[0003] In the related technologies, the display module of most products is attached to the middle frame of the whole machine by gluing the middle frame and then attaching and fixing it to the packaging cover in the display module. The display module of a small number of products is attached to the middle frame by double-sided tape. In the glue-dispensing method, not only are high requirements on the glue-dispensing surface, but also precise control of the glue-dispensing parameters is required, and a special retaining wall structure is required. It is also limited by the space of the whole machine structure, assembly convenience, and removable reworkability, which makes the glue-dispensing attachment difficult. In the double-sided tape bonding method, there is a greater risk of peeling due to factors such as the easy failure of the double-sided tape and the narrow attachment width. Summary of the invention

[0004] Based on this, it is necessary to provide a display device and a manufacturing method thereof that can reliably and low-costly bond a display module and a middle frame in order to solve the above technical problems.

[0005] In a first aspect, the present application provides a display device, comprising:

[0006] Package cover;

[0007] An optical adhesive layer, the optical adhesive layer comprising a first surface and a second surface opposite to each other, the first surface of the optical adhesive layer being attached to one side of the packaging cover plate, the second surface of the optical adhesive layer comprising a first bonding area and a second bonding area, the second bonding area being located at the periphery of the first bonding area;

[0008] A display screen body, wherein a display side of the display screen body is attached to a first bonding area of ​​the second surface of the optical adhesive layer;

[0009] A middle frame, wherein the bonding portion of the middle frame is attached to the second bonding area of ​​the second surface of the optical adhesive layer.

[0010] In one embodiment, the middle frame includes a side wall portion, and the side wall portion is connected to the fitting portion;

[0011] Along a direction parallel to the plane where the display screen body is located, a first spacing area is provided between the fitting portion of the middle frame and the display screen body;

[0012] Optionally, along a direction parallel to the plane where the display screen is located, a size of the first spacing area is 0.3 mm to 1 mm.

[0013] In one embodiment, the second surface of the optical adhesive layer further includes a second spacing area between the first bonding area and the second bonding area, and along a direction parallel to the plane where the display screen is located, the size of the second spacing area is the same as that of the first spacing area, and the second spacing area includes a plurality of separation structures arranged at intervals;

[0014] Optionally, the separation structure is a through hole or a groove.

[0015] In one embodiment, it further includes an ink layer;

[0016] The ink layer is located between the first surface of the optical adhesive layer and the packaging cover plate, and the orthographic projection of the second spacer area and the second bonding area of ​​the second surface of the optical adhesive layer toward the packaging cover plate is located within the orthographic projection of the ink layer toward the packaging cover plate.

[0017] In one embodiment, along the direction from the side wall of the middle frame to the packaging cover plate, the side end of the optical adhesive layer is concavely arranged relative to the side end of the packaging cover plate;

[0018] Optionally, along a direction parallel to the plane where the display screen is located, a distance between a side end of the optical adhesive layer and a side end of the packaging cover plate is 0.1 mm to 0.3 mm.

[0019] In one embodiment, along a direction parallel to the plane where the display screen is located, the size of the second bonding area of ​​the second surface of the optical adhesive layer is smaller than the size of the bonding portion of the middle frame;

[0020] Optionally, along a direction parallel to the plane where the display screen is located, a size of the second bonding area of ​​the second surface of the optical adhesive layer is 0.5 mm to 3 mm.

[0021] In one embodiment, an orthographic projection of the first bonding area of ​​the second surface of the optical adhesive layer toward the packaging cover plate coincides with an orthographic projection of the display screen toward the packaging cover plate.

[0022] In one of the embodiments, a polarizer is also included;

[0023] The polarizer is located between the first bonding area of ​​the second surface of the optical adhesive layer and the display screen, and the orthographic projection of the polarizer toward the packaging cover plate coincides with the orthographic projection of the first bonding area of ​​the second surface of the optical adhesive layer toward the packaging cover plate.

[0024] In a second aspect, the present application further provides a method for manufacturing a display device, comprising:

[0025] A packaging cover plate, an optical adhesive layer, a display screen and a middle frame are provided, wherein the optical adhesive layer comprises a first surface and a second surface opposite to each other, a first protective film is attached to the first surface of the optical adhesive layer, a second protective film is attached to the second surface of the optical adhesive layer, and the second surface of the optical adhesive layer comprises a first bonding area and a second bonding area;

[0026] Tear off the first protective film on the first surface of the optical adhesive layer, and adhere the first surface of the optical adhesive layer to one side of the packaging cover plate;

[0027] Tear off the second protective film in the first bonding area of ​​the second surface of the optical adhesive layer, and adhere the first bonding area of ​​the second surface of the optical adhesive layer to the display side of the display screen;

[0028] The second protective film on the second bonding area of ​​the second surface of the optical adhesive layer is removed, and the second bonding area on the second surface of the optical adhesive layer is attached to the bonding portion of the middle frame to obtain the display device.

[0029] In one embodiment, before providing the packaging cover plate, the optical adhesive layer, the display screen body and the middle frame, the method further includes:

[0030] A separation structure is formed in the second spacing area between the first bonding area on the second surface of the optical adhesive layer and the second bonding area on the second surface of the optical adhesive layer, and the separation structure penetrates the second protective film at a corresponding position.

[0031] The above-mentioned display device and its manufacturing method, wherein the display device includes a display module and a middle frame, and the display module includes a display screen body, an optical adhesive layer and a packaging cover plate which are stacked in sequence. The optical adhesive layer includes a first surface and a second surface relative to each other, the packaging cover plate is attached to the first surface of the optical adhesive layer, the display side of the display screen body is attached to the first bonding area of ​​the second surface of the optical adhesive layer, the bonding part of the middle frame is attached to the second bonding area of ​​the second surface of the optical adhesive layer, and the second bonding area is located outside the first bonding area; in this way, the scheme of the embodiment of the present application adopts the same optical adhesive layer, and realizes the bonding of the packaging cover plate and the display screen body while realizing the bonding of the packaging cover plate and the middle frame, that is, the bonding of the display module and the middle frame is realized at the same time. Compared with the point glue bonding method in the related art, the process is simple and the cost is low. Compared with the double-sided adhesive bonding method in the related art, the peeling risk of the display module and the middle frame is reduced, the bonding reliability is improved, and the bonding also has better dustproof and waterproof properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments of the present application or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a schematic top view of a display device in one embodiment;

[0034] Figure 2 for Figure 1 One of the cross-sectional diagrams along line CC';

[0035] Figure 3 This is one of the schematic diagrams of area division of the second surface of the optical adhesive layer in one embodiment;

[0036] Figure 4 The second cross-sectional diagram along the CC' line;

[0037] Figure 5 The second schematic diagram of the area division of the second surface of the optical adhesive layer in one embodiment;

[0038] Figure 6 The third cross-sectional diagram along the CC' line;

[0039] Figure 7 The fourth cross-sectional diagram along the CC' line;

[0040] Figure 8 is a schematic flow chart of a method for manufacturing a display device in one embodiment;

[0041] Fig. 9 A side view of an optical adhesive layer with a first protective film and a second protective film attached thereto in one embodiment;

[0042] Fig.10 This is one of the structural diagrams involved in a method for manufacturing a display device in one embodiment;

[0043] Fig.11 This is the second structural diagram involved in a method for manufacturing a display device in an embodiment.

[0044] Explanation of the reference numerals: 100 - middle frame, 110 - bonding part, 120 - side wall part; 210 - packaging cover plate, 220 - optical adhesive layer, 230 - display screen, 240 - ink layer, 250 - polarizer, 221 - first protective film, 222 - second protective film, 2201 - first bonding area, 2202 - second bonding area, 2203 - second spacing area. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] The display device provided in the embodiment of the present application is a product with a screen display function. For example, the display device can be used to display static images, such as pictures, or can be used to display dynamic images, such as videos. The display device can be a mobile phone, a laptop computer, a tablet computer, a computer, a camera, a car-mounted smart central control screen, a calculator, a smart watch, a GPS navigator, an electronic photo, an electronic billboard, a sign, a washing machine, a refrigerator, etc. The display device can also have functions such as taking pictures, recording videos, fingerprint recognition, and face recognition.

[0047] In an exemplary embodiment, in combination Figures 1 to 3 , a display device is provided, which includes a display module and a middle frame 100, and the display module includes a display screen 230, an optical adhesive layer 220 and a packaging cover plate 210 which are stacked in sequence. The display screen 230 can be an OLED (Organic Light Emitting Diode) display screen or an LCD (Liquid Crystal Display) display screen. The material of the optical adhesive layer 220 can be OCA (Optically Clear Adhesive) optical adhesive. The material of the packaging cover plate 210 can be glass, etc. The display module can also include a supporting layer located on the non-display side of the display screen 230.

[0048] The optical adhesive layer 220 includes a first surface and a second surface opposite to each other. The first surface of the optical adhesive layer 220 is attached to one side of the package cover plate 210. The second surface of the optical adhesive layer 220 includes a first bonding area 2201 and a second bonding area 2202. The second bonding area 2202 is located outside the first bonding area 2201. The display screen 230 can be a liquid crystal display screen, a plasma display screen, or an electroluminescent diode display screen. The display side of the display screen 230 is attached to the first bonding area 2201 on the second surface of the optical adhesive layer 220.

[0049] The middle frame 100 includes a bonding portion 110. The bonding portion 110 of the middle frame 100 is attached to the first bonding area 2201 of the second surface of the optical adhesive layer 220. The middle frame 100 and the packaging cover plate 210 can enclose a predetermined space, and the predetermined space accommodates the remaining film layer structures in the display module except the packaging cover plate 210, and the remaining film layer structures at least include the optical adhesive layer 220 and a portion of the display screen 230.

[0050] In the embodiment of the present application, the same optical adhesive layer 220 is used to achieve the bonding of the packaging cover plate 210 and the display screen 230 while achieving the bonding of the packaging cover plate 210 and the middle frame 100, that is, the bonding of the display module and the middle frame 100 is achieved at the same time. Compared with the spot glue bonding method in the related art, there is no need for overly high requirements on the spot glue surface, finely controlled spot glue parameters, special retaining wall structure, etc., and the process is simple and the cost is low. Compared with the double-sided tape bonding method in the related art, there is no need to consider the viscosity failure of the double-sided tape and the narrow attachment width, etc., which reduces the peeling risk of the display module and the middle frame 100, improves the bonding reliability, and the bonding also has better dustproof and waterproof properties.

[0051] In an exemplary embodiment, referring to Figure 4 The middle frame 100 also includes a side wall portion 120. The side wall portion 120 and the packaging cover plate 210 can enclose the above-mentioned predetermined space. The side wall portion 120 is connected to the bonding portion 110. Along the direction parallel to the plane where the display screen body 230 is located, there is a first spacing area between the bonding portion 110 and the display screen body 230. The first spacing area can be understood as the distance between the bonding portion 110 and the display screen body 230; L1 represents the size of the first spacing area along the direction parallel to the plane where the display screen body 230 is located.

[0052] In this embodiment, a first spacing area is provided between the bonding portion 110 of the middle frame 100 and the display screen body 230, so that when the display screen body 230 and the bonding portion 110 of the middle frame 100 are respectively bonded to the first bonding area 2201 and the second bonding area 2202 of the second surface of the optical adhesive layer 220, the stress in the bonding process is released through the first spacing area, thereby improving the bonding effect, providing a glue overflow space for possible glue overflow of the optical adhesive layer 220, and preventing the occurrence of bonding wrinkles.

[0053] In an exemplary embodiment, continue to refer to Figure 4 , along a direction parallel to the plane where the display screen 230 is located, a size L1 of the first spacing area is 0.3 mm to 1 mm, for example, 0.3 mm, 0.5 mm, 0.8 mm or 1 mm.

[0054] In this embodiment, if the size L1 of the first spacer is too large, the frame of the display device will be too large. If the size L1 of the first spacer is too small, it will not be able to release the fitting stress well and provide overflow space for glue. Therefore, the size L1 of the first spacer is set to 0.3 mm~1 mm, for example, 0.3 mm, 0.5 mm, 0.8 mm or 1 mm, etc., which can not only release the fitting stress well and provide overflow space for glue, but also ensure the narrow frame of the display device.

[0055] In an exemplary embodiment, referring to Figure 5The second surface of the optical adhesive layer 220 also includes a second spacer 2203 between the first bonding area 2201 and the second bonding area 2202. In the direction parallel to the plane where the display screen 230 is located, the size L2 of the second spacer 2203 is the same as the size L1 of the first spacer. The second spacer 2203 includes a plurality of separation structures arranged at intervals. The separation structures are used to facilitate the separation of the protective film of the first bonding area 2201 and the protective film of the second bonding area 2202 on the second surface of the optical adhesive layer 220.

[0056] In this embodiment, before attaching the display screen 230 to the first bonding area 2201 of the second surface of the optical adhesive layer 220, the protective film attached to the first bonding area 2201 of the second surface of the optical adhesive layer 220 will be torn off first, and before attaching the bonding portion 110 of the middle frame 100 to the second bonding area 2202 of the second surface of the optical adhesive layer 220, the protective film attached to the second bonding area 2202 of the second surface of the optical adhesive layer 220 will be torn off first. The separation structure of the second spacer area 2203 of the optical adhesive layer 220 penetrates the protective film between the first bonding area 2201 and the second bonding area 2202, so that when the protective films of the first bonding area 2201 and the second bonding area 2202 are torn off successively, the protective films of the first bonding area 2201 and the second bonding area 2202 are easy to separate, thereby preventing the optical adhesive layer 220 from being pulled and severely deformed due to tearing off the protective film, resulting in a decrease in the bonding effect.

[0057] In an exemplary embodiment, the separation structure is a through hole or a groove. Among them, when the separation structure only penetrates the protective film between the first bonding area 2201 and the second bonding area 2202, the bonding between the middle frame 100, the packaging cover plate 210 and the display screen 230 is more firmly; when the separation structure penetrates the protective film between the first bonding area 2201 and the second bonding area 2202 and the entire optical adhesive layer 220, the bonding stress between the middle frame 100, the packaging cover plate 210 and the display screen 230 can be better released based on the second spacer area 2203, thereby optimizing the bonding effect; and when the separation structure penetrates the protective film between the first bonding area 2201 and the second bonding area 2202 and part of the optical adhesive layer 220, it can ensure that the bonding between the middle frame 100, the packaging cover plate 210 and the display screen 230 is firmly, and can also release the bonding stress between the middle frame 100, the packaging cover plate 210 and the display screen 230 based on the second spacer area 2203, thereby ensuring the bonding effect.

[0058] In this embodiment, the separation structure is a through hole or a groove, so that the separation structure is simple and easy to implement, thereby reducing the bonding cost of the display module and the middle frame 100.

[0059] In an exemplary embodiment, the first bonding area 2201 and the second bonding area 2202 of the second surface of the optical adhesive layer 220 may be spaced apart, and further, the protective film of the first bonding area 2201 and the protective film of the second bonding area 2202 may also be spaced apart, so that when the protective film of the first bonding area 2201 and the protective film of the second bonding area 2202 are torn off successively, the protective film of the first bonding area 2201 and the protective film of the second bonding area 2202 are independent of each other and do not affect each other, thereby further preventing the optical adhesive layer 220 from being pulled or severely deformed due to tearing off the protective film, resulting in a decrease in the bonding effect.

[0060] In an exemplary embodiment, referring to Figure 6 The display module further includes an ink layer 240, and the material of the ink layer 240 can be ink. The ink layer 240 is located between the first surface of the optical adhesive layer 220 and the encapsulation cover plate 210, and the orthographic projection of the second spacer 2203 and the second bonding area 2202 of the second surface of the optical adhesive layer 220 toward the encapsulation cover plate 210 is located within the orthographic projection of the ink layer 240 toward the encapsulation cover plate 210.

[0061] In this embodiment, the ink layer 240 can block the metal wires at the frame position of the display device, thereby improving the appearance of the display device. The orthographic projections of the second spacer 2203 and the second bonding area 2202 of the second surface of the optical adhesive layer 220 toward the package cover plate 210 are located within the orthographic projection of the ink layer 240 toward the package cover plate 210, so that the ink layer 240 can also block the bonding traces between the display module and the middle frame 100, thereby further improving the appearance of the display device.

[0062] In an exemplary embodiment, along the direction from the second spacing area 2203 to the first bonding area 2201 , the orthographic projection of the edge of the first bonding area 2201 toward the package cover plate 210 may also be located within the orthographic projection of the ink layer 240 toward the package cover plate 210 .

[0063] In an exemplary embodiment, continue to refer to Figure 6 , along the direction of the side wall portion 120 of the middle frame 100 pointing to the packaging cover plate 210 , the side end of the optical adhesive layer 220 is concavely arranged relative to the side end of the packaging cover plate 210 .

[0064] In this embodiment, the side ends of the optical adhesive layer 220 are set inwardly relative to the side ends of the packaging cover plate 210 to meet the fitting tolerance and attachment accuracy between the first surface of the optical adhesive layer 220 and the packaging cover plate 210 and to control the amount of glue overflow.

[0065] In an exemplary embodiment, continue to refer to Figure 6, along a direction parallel to the plane where the display screen 230 is located, the distance L3 between the side end of the optical adhesive layer 220 and the side end of the packaging cover plate 210 is 0.1 mm ~ 0.3 mm, for example, 0.1 mm, 0.2 mm or 0.3 mm, so as to meet the fitting tolerance and attachment accuracy between the first surface of the optical adhesive layer 220 and the packaging cover plate 210, and can well control the amount of glue overflow.

[0066] In an exemplary embodiment, continue to refer to Figure 6 Considering that the side ends of the optical adhesive layer 220 are set inwardly relative to the side ends of the packaging cover plate 210, the size L4 of the second bonding area 2202 of the second surface of the optical adhesive layer 220 along the direction parallel to the plane where the display screen body 230 is located is smaller than the size L5 of the bonding portion 110 of the middle frame 100.

[0067] In an exemplary embodiment, continue to refer to Figure 6 , along the direction parallel to the plane where the display screen body 230 is located, the size L4 of the second bonding area 2202 on the second surface of the optical adhesive layer 220 is 0.5mm~3mm, for example, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm or 3mm, so as to be close to the size of the bonding portion 110 of the middle frame 100 along the direction parallel to the plane where the display screen body 230 is located, thereby achieving reliable bonding between the packaging cover plate 210 and the middle frame 100.

[0068] In an exemplary embodiment, continue to refer to Figure 6 The orthographic projection of the first bonding area 2201 on the second surface of the optical adhesive layer 220 toward the packaging cover plate 210 coincides with the orthographic projection of the display screen 230 toward the packaging cover plate 210, so as to make full use of the optical adhesive layer 220 to bond the display screen 230 to the packaging cover plate 210, while ensuring the bonding reliability, and also helping to prevent water and oxygen from entering the interior of the display module.

[0069] In an exemplary embodiment, referring to Figure 7 The display module also includes a polarizer 250, which is located between the first bonding area 2201 on the second surface of the optical adhesive layer 220 and the display screen 230, and the orthographic projection of the polarizer 250 toward the packaging cover plate 210 coincides with the orthographic projection of the first bonding area 2201 on the second surface of the optical adhesive layer 220 toward the packaging cover plate 210.

[0070] In addition, continue to refer to Figure 7 There is a third spacing area between the side wall portion 120 of the middle frame 100 and the end side of the packaging cover plate 210. In practice, there may be no spacing between the side wall portion 120 of the middle frame 100 and the end side of the packaging cover plate 210. The embodiment of the present application does not make specific limitations on this and can be set according to the actual assembly space of the whole machine.

[0071] In an exemplary embodiment, referring to Figure 8 , provides a method for manufacturing a display device, which can be used to manufacture the display device in any of the above embodiments, and the method comprises:

[0072] S802, provide a packaging cover plate, an optical adhesive layer, a display screen and a middle frame, wherein the optical adhesive layer includes a first surface and a second surface relative to each other, a first protective film is attached to the first surface of the optical adhesive layer, and a second protective film is attached to the second surface of the optical adhesive layer, wherein the second surface of the optical adhesive layer includes a first bonding area and a second bonding area.

[0073] Among them, you can refer to Fig. 9 The first protective film 221 may be a light release film, and the second protective film 222 may be a heavy release film.

[0074] S804, tearing off the first protective film on the first surface of the optical adhesive layer, and attaching the first surface of the optical adhesive layer to one side of the packaging cover plate.

[0075] Among them, you can refer to Fig.10 , the first surface of the optical adhesive layer 220 may be attached to one side of the packaging cover plate 210 coated with the ink layer 240 .

[0076] S806, tearing off the second protective film on the first bonding area of ​​the second surface of the optical adhesive layer, and attaching the first bonding area of ​​the second surface of the optical adhesive layer to the display side of the display screen.

[0077] Among them, you can refer to Fig.11 , the first bonding area 2201 of the second surface of the optical adhesive layer 220 may be attached to one side of the polarizer 250 located on the display side of the display screen body 230 .

[0078] S808, tearing off the second protective film on the second bonding area of ​​the second surface of the optical adhesive layer, and attaching the second bonding area of ​​the second surface of the optical adhesive layer to the bonding portion of the middle frame to obtain a display device.

[0079] Among them, you can refer to Figure 7 , a structure in which the display module and the middle frame 100 are bonded together is obtained, namely, a display device.

[0080] In an exemplary embodiment, before S802, the process further includes: forming a separation structure in a second spacing area between a first bonding area on the second surface of the optical adhesive layer and a second bonding area on the second surface of the optical adhesive layer, wherein the separation structure penetrates the second protective film at a corresponding position.

[0081] In this embodiment, before attaching the display screen 230 to the first bonding area 2201 of the second surface of the optical adhesive layer 220, the second protective film attached to the first bonding area 2201 of the second surface of the optical adhesive layer 220 will be torn off first, and before attaching the bonding portion 110 of the middle frame 100 to the second bonding area 2202 of the second surface of the optical adhesive layer 220, the second protective film attached to the second bonding area 2202 of the second surface of the optical adhesive layer 220 will be torn off first. The separation structure of the second spacer area 2203 of the optical adhesive layer 220 penetrates the second protective film between the first bonding area 2201 and the second bonding area 2202, so that when the second protective film of the first bonding area 2201 and the second protective film of the second bonding area 2202 are torn off successively, the second protective film of the first bonding area 2201 and the second protective film of the second bonding area 2202 are easily separated, thereby preventing the optical adhesive layer 220 from being pulled and severely deformed due to tearing off the second protective film, resulting in a decrease in the bonding effect.

[0082] Among them, when the separation structure only penetrates the second protective film between the first bonding area 2201 and the second bonding area 2202, the bonding between the middle frame 100, the packaging cover plate 210 and the display screen 230 is more firmly; when the separation structure penetrates the second protective film between the first bonding area 2201 and the second bonding area 2202 and the entire optical adhesive layer 220, the bonding stress between the middle frame 100, the packaging cover plate 210 and the display screen 230 can be better released based on the second spacer area 2203, thereby optimizing the bonding effect; and when the separation structure penetrates the second protective film between the first bonding area 2201 and the second bonding area 2202 and part of the optical adhesive layer 220, it can ensure that the bonding between the middle frame 100, the packaging cover plate 210 and the display screen 230 is firmly, and can also release the bonding stress between the middle frame 100, the packaging cover plate 210 and the display screen 230 based on the second spacer area 2203, thereby ensuring the bonding effect.

[0083] In an exemplary embodiment, the separation structure is a through hole or a groove, etc. The separation structure is a through hole or a groove, so that the structure of the separation structure is simple and easy to implement, thereby reducing the bonding cost of the display module and the middle frame 100.

[0084] The manufacturing method of the display device and the display device provided in the embodiment of the present application belong to the same inventive concept, can achieve the same technical effect, and the repeated contents will not be repeated here.

[0085] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0086] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0087] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A display device, characterized in that: include: Package cover; An optical adhesive layer, the optical adhesive layer comprising a first surface and a second surface opposite to each other, the first surface of the optical adhesive layer being attached to one side of the packaging cover plate, the second surface of the optical adhesive layer comprising a first bonding area and a second bonding area, the second bonding area being located at the periphery of the first bonding area; A display screen body, wherein a display side of the display screen body is attached to a first bonding area of ​​the second surface of the optical adhesive layer; A middle frame, wherein the bonding portion of the middle frame is attached to the second bonding area of ​​the second surface of the optical adhesive layer.

2. The display device according to claim 1, characterized in that The middle frame includes a side wall portion, and the side wall portion is connected to the fitting portion; Along a direction parallel to the plane where the display screen body is located, a first spacing area is provided between the fitting portion of the middle frame and the display screen body; Optionally, along a direction parallel to the plane where the display screen is located, a size of the first spacing area is 0.3 mm to 1 mm.

3. The display device according to claim 2, characterized in that The second surface of the optical adhesive layer further includes a second spacing area between the first bonding area and the second bonding area, and along a direction parallel to the plane where the display screen is located, the size of the second spacing area is the same as that of the first spacing area, and the second spacing area includes a plurality of separation structures arranged at intervals; Optionally, the separation structure is a through hole or a groove.

4. The display device according to claim 3, characterized in that Also includes an ink layer; The ink layer is located between the first surface of the optical adhesive layer and the packaging cover plate, and the orthographic projection of the second spacer area and the second bonding area of ​​the second surface of the optical adhesive layer toward the packaging cover plate is located within the orthographic projection of the ink layer toward the packaging cover plate.

5. The display device according to claim 2, characterized in that: Along the direction from the side wall of the middle frame to the packaging cover plate, the side end of the optical adhesive layer is concavely arranged relative to the side end of the packaging cover plate; Optionally, along a direction parallel to the plane where the display screen is located, a distance between a side end of the optical adhesive layer and a side end of the packaging cover plate is 0.1 mm to 0.3 mm.

6. The display device according to claim 1, characterized in that: Along a direction parallel to the plane where the display screen is located, the size of the second bonding area of ​​the second surface of the optical adhesive layer is smaller than the size of the bonding portion of the middle frame; Optionally, along a direction parallel to the plane where the display screen is located, a size of the second bonding area of ​​the second surface of the optical adhesive layer is 0.5 mm to 3 mm.

7. The display device according to claim 1, characterized in that: The orthographic projection of the first bonding area on the second surface of the optical adhesive layer toward the packaging cover plate coincides with the orthographic projection of the display screen toward the packaging cover plate.

8. The display device according to claim 7, characterized in that: Also includes polarizers; The polarizer is located between the first bonding area of ​​the second surface of the optical adhesive layer and the display screen, and the orthographic projection of the polarizer toward the packaging cover plate coincides with the orthographic projection of the first bonding area of ​​the second surface of the optical adhesive layer toward the packaging cover plate.

9. A method for manufacturing a display device, characterized in that: include: A packaging cover plate, an optical adhesive layer, a display screen and a middle frame are provided, wherein the optical adhesive layer comprises a first surface and a second surface opposite to each other, a first protective film is attached to the first surface of the optical adhesive layer, a second protective film is attached to the second surface of the optical adhesive layer, and the second surface of the optical adhesive layer comprises a first bonding area and a second bonding area; Tear off the first protective film on the first surface of the optical adhesive layer, and adhere the first surface of the optical adhesive layer to one side of the packaging cover plate; Tear off the second protective film in the first bonding area of ​​the second surface of the optical adhesive layer, and adhere the first bonding area of ​​the second surface of the optical adhesive layer to the display side of the display screen; The second protective film on the second bonding area of ​​the second surface of the optical adhesive layer is removed, and the second bonding area on the second surface of the optical adhesive layer is attached to the bonding portion of the middle frame to obtain the display device.

10. The method for manufacturing a display device according to claim 9, characterized in that: Before providing the packaging cover plate, the optical adhesive layer, the display screen body and the middle frame, the method further includes: A separation structure is formed in the second spacing area between the first bonding area on the second surface of the optical adhesive layer and the second bonding area on the second surface of the optical adhesive layer, and the separation structure penetrates the second protective film at a corresponding position.

Images