Display device and preparation method thereof

Abstract

The invention discloses a display device and a preparation method thereof. The display device comprises a display module; the cover plate is arranged on the display side of the display module; the optical transparent adhesive layer is arranged between the display module and the cover plate; the fixing frame comprises a bottom plate and side walls arranged on the periphery of the bottom plate in a surrounding mode, the bottom plate is arranged on the non-display side of the display module, and the side walls extend in the direction close to the optical transparent adhesive layer; wherein the orthographic projection of the optical transparent adhesive layer on the cover plate is located in the cover plate, the orthographic projection of the display module on the cover plate is located in the orthographic projection of the optical transparent adhesive layer on the cover plate, and the part, exceeding the orthographic projection of the display module on the cover plate, of the orthographic projection of the optical transparent adhesive layer on the cover plate is a first optical adhesive area; the side, close to the display module, of the first optical cement area is attached to the side wall.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a display device and a method for preparing the same. Background Art

[0002] In the assembly process of the display device of the related art, after the cover plate and the display module are bonded together using optically clear adhesive (OCA), the fixing frame and the cover plate need to be bonded together using a specific fixing glue. The bonding steps are numerous, the process is relatively complicated, and the cost is correspondingly high.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field.

[0004] Application Contents

[0005] The present application aims to at least to some extent solve the technical problems that the manufacturing process of the display module has many bonding steps, a relatively complex process, and a correspondingly high cost. To this end, the present application provides a display device and a manufacturing method thereof.

[0006] In a first aspect, an embodiment of the present application provides a display device, the display device comprising:

[0007] Display module;

[0008] A cover plate, the cover plate being arranged on a display side of the display module;

[0009] an optically transparent adhesive layer, the optically transparent adhesive layer being disposed between the display module and the cover plate; and

[0010] A fixed frame, the fixed frame comprising a bottom plate and side walls arranged around the bottom plate, the bottom plate is arranged on the non-display side of the display module, and the side walls extend in a direction close to the optically transparent adhesive layer;

[0011] The orthographic projection of the optically transparent adhesive layer on the cover plate is located inside the cover plate, the orthographic projection of the display module on the cover plate is located inside the orthographic projection of the optically transparent adhesive layer on the cover plate, and the portion where the orthographic projection of the optically transparent adhesive layer on the cover plate exceeds the orthographic projection of the display module on the cover plate is the first optical adhesive area;

[0012] A side of the first optical adhesive area close to the display module is in contact with the side wall.

[0013] In some embodiments, the width of the bonding between the first optical adhesive area and the side wall is greater than or equal to 2.0 mm.

[0014] In some embodiments, a portion of the cover plate that exceeds the orthographic projection of the optically transparent adhesive layer on the cover plate is a first cover plate area, and a width of the first cover plate area is less than or equal to 2.0 mm.

[0015] In some embodiments, the display module includes an array substrate and a color filter substrate stacked on the array substrate, the orthographic projection of the color filter substrate on the cover plate is located within the orthographic projection of the array substrate on the cover plate, and the portion of the orthographic projection of the array substrate on the cover plate that exceeds the orthographic projection of the color filter substrate on the cover plate is the first array substrate area;

[0016] The optically transparent adhesive layer is located on a side of the color filter substrate away from the array substrate;

[0017] The display device further includes a buffer adhesive, and the buffer adhesive is disposed between the first array substrate region and the optically transparent adhesive layer.

[0018] In some embodiments, the buffer adhesive is a PET tape.

[0019] In some embodiments, the display module further includes:

[0020] an upper polarizer, wherein the upper polarizer is disposed between the optically transparent adhesive layer and the color filter substrate, wherein the orthographic projection of the upper polarizer on the cover plate is located within the orthographic projection range of the array substrate on the cover plate and does not overlap with the first array substrate area; and,

[0021] A lower polarizer is disposed between the array substrate and the bottom plate, and the orthographic projection of the lower polarizer on the cover plate is located within the orthographic projection range of the array substrate on the cover plate and does not overlap with the first optical adhesive area.

[0022] In some embodiments, the display device also includes an ink layer, which is disposed between the cover plate and the optically transparent adhesive layer, the orthographic projection of the ink layer on the cover plate is located within the orthographic projection range of the optically transparent adhesive layer on the cover plate, and the orthographic projection of the ink layer on the cover plate covers the edge of the orthographic projection of the upper polarizer on the cover plate, the edge of the orthographic projection of the color film substrate on the cover plate, the edge of the orthographic projection of the array substrate on the cover plate, and the edge of the orthographic projection of the lower polarizer on the cover plate.

[0023] The present application also provides a method for manufacturing the above display device, which comprises the following steps:

[0024] Laminating the optically transparent adhesive layer on a side of the cover plate facing the display module to obtain a first semi-finished product;

[0025] Laminating the display module to the side of the optically transparent adhesive layer of the first semi-finished product away from the cover plate to obtain a second semi-finished product;

[0026] The fixing frame is assembled on a side of the display module of the second semi-finished product away from the optically transparent adhesive layer, and the side wall of the fixing frame is bonded to the first optical adhesive area to obtain the display device.

[0027] In some embodiments, the display module includes an array substrate and a color filter substrate stacked on the array substrate, the orthographic projection of the color filter substrate on the cover plate is located within the orthographic projection of the array substrate on the cover plate, and the portion of the orthographic projection of the array substrate on the cover plate that exceeds the orthographic projection of the color filter substrate on the cover plate is the first array substrate area;

[0028] Before the step of preparing the second semi-finished product, the method further comprises the following steps:

[0029] A buffer adhesive is attached to a side of the first array substrate region close to the optically transparent adhesive layer.

[0030] In some embodiments, before the step of preparing the first semi-finished product, the following steps are also included:

[0031] An ink layer is coated on a side of the cover plate close to the optically transparent adhesive layer.

[0032] The embodiments of the present application have at least the following beneficial effects:

[0033] In the above-mentioned display module, the orthographic projection of the optically transparent adhesive layer on the cover plate is located inside the cover plate, and the orthographic projection of the display module on the cover plate is located inside the orthographic projection of the optically transparent adhesive layer on the cover plate, that is, the sizes of the cover plate, the optically transparent adhesive layer and the display module are successively smaller, so the first optical adhesive area of ​​the optically transparent adhesive layer can be used for bonding with the side wall of the fixed frame, that is, when assembling the display device, the fixed frame can be directly buckled with the cover plate when covering the display module, and the connection between the cover plate and the fixed frame is completed by using the optically transparent adhesive layer, without the additional step of dispensing glue on the cover plate, that is, the overflow defect of the dispensing glue process step is avoided, and the display device produced has a higher yield rate; the whole piece of optically transparent adhesive layer also reduces the difficulty of the process flow, improves the efficiency of assembling the display device, and reduces the material cost and the time cost of assembly. In addition, precisely because the fixing frame is connected to the cover plate through an optically transparent adhesive layer, based on the characteristics of the optically transparent adhesive layer, in a low temperature environment, the success rate of separating the cover plate from the fixing frame is also significantly improved, which can reduce the difficulty of repairing the display device and reduce the losses that may be caused by disassembling the display device, thereby reducing the cost of the display device.

[0034] After the optically transparent adhesive layer is passed through and bonded to the side wall of the cover plate and the fixed frame, there is no gap between the optically transparent adhesive layer and the fixed frame, and the projection of the display module on the cover plate falls within the orthographic projection of the optically transparent adhesive layer on the cover plate, and the projection of the display module on the cover plate also falls within the orthographic projection of the fixed frame on the cover plate, that is, the edge of the optically transparent adhesive layer is located outside the display module and does not exceed the cover plate. It can be understood that the display device of this embodiment is not easy to produce a light-transmitting area, which can reduce or avoid the halo phenomenon of the display device, and the product quality of the display device is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A partial structural schematic diagram of a display device of the related technology in an embodiment of the present application is shown.

[0037] Figure 2 A schematic structural diagram of a display device of related technology in an embodiment of the present application is shown.

[0038] Figure 3 A partial structural schematic diagram of a display device in one or more embodiments of the present application is shown.

[0039] Figure 4A schematic diagram of the structure of a device in one or more embodiments of the present application is shown.

[0040] Figure 5 A schematic flow chart of an assembly method of a display device in one or more embodiments of the present application is shown.

[0041] Figure numerals: 100, cover plate; 110, first cover plate area; 200, optically transparent adhesive layer; 210, first optical adhesive area; 300, display module; 310, upper polarizer; 320, color film substrate; 330, array substrate; 331, first array substrate area; 340, lower polarizer; 400, fixing frame; 410, bottom plate; 420, side wall; 500, buffer glue; 600, silicone glue; 700, light-transmitting area; 800, ink layer. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0043] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0044] The main display component of the display device is the display module 300, which is connected to the cover plate 100 and the fixing frame 400 by bonding, so that the display device can be used as a relatively independent component. Figure 1As shown, the display module 300 is connected to the cover plate 100 through the optically transparent adhesive layer 200. The optically transparent adhesive layer 200 is retracted a certain distance relative to the edges of the cover plate 100 and the display module 300 to reserve a certain space on the cover plate 100 to set the silicone adhesive 600. Then, the cover plate 100 and the display module 300 are connected through the silicone adhesive 600. Optionally, silicone adhesive 600 and PET (polyethylene glycol terephthalate) tape are provided between the cover plate 100 and the display module 300 to complete the assembly of the display device. The assembly process requires control of the bonding accuracy of the optically transparent adhesive layer 200, the amount of silicone adhesive 600, and the relative position between the silicone adhesive 600 and the PET tape. The bonding steps are many, the process is relatively complex, the fault tolerance rate is low, the defective rate is correspondingly high, and the overall production cost of the display device is also correspondingly high. Figure 2 As shown, Figure 2 for Figure 1 From the structural schematic diagram of the display side of the display device, it can be seen that the display device produced by the above method has a light-transmitting area 700 at the edge of the display device through which light can pass due to the gap between the optically transparent adhesive layer 200 and the fixed frame 400. The light emitted by the display module 300 passes through the light-transmitting area 700 to generate a halo, thereby affecting the quality of the display device.

[0045] In view of the above problems existing in the process of assembling a display device, the present application proposes a display device, such as Figure 3-Figure 4 As shown, in some embodiments, the display device provided by the present application includes: a display module 300, a cover plate 100, an optically transparent adhesive layer 200 and a fixing frame 400; the cover plate 100 is arranged on the display side of the display module 300; the optically transparent adhesive layer 200 is arranged between the display module 300 and the cover plate 100; the fixing frame 400 includes a bottom plate 410 and side walls 420 arranged around the bottom plate 410, the bottom plate 410 is arranged on the non-display side of the display module 300, and the side walls 420 are arranged close to the optically transparent adhesive layer 200. The optical transparent adhesive layer 200 extends in the direction of the adhesive layer 200; wherein, the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100 is located inside the cover plate 100, the orthographic projection of the display module 300 on the cover plate 100 is located inside the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100, and the portion where the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100 exceeds the orthographic projection of the display module 300 on the cover plate 100 is the first optical adhesive area 210; the first optical adhesive area 210 is in contact with the side wall 420 on one side close to the display module 300.

[0046] In the display device provided in the embodiment of the present application, the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100 is located inside the cover plate 100, and the orthographic projection of the display module 300 on the cover plate 100 is located inside the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100, that is, the sizes of the cover plate 100, the optically transparent adhesive layer 200 and the display module 300 are successively smaller, then the first optical adhesive area 210 of the optically transparent adhesive layer 200 can be used to bond with the side wall 420 of the fixed frame 400, that is, when assembling the display device, the fixed frame When covering the display module 300, the cover plate 100 can be directly fastened with the cover plate 100, and the optically transparent adhesive layer 200 is used to complete the connection between the cover plate 100 and the fixed frame 400, without the need for an additional step of applying glue on the cover plate 100, that is, the overflow defect of the glue application process step is avoided, and the display device produced has a higher yield rate; the whole piece of optically transparent adhesive layer 200 also reduces the difficulty of the process flow, improves the efficiency of assembling the display device, and reduces the material cost and the time cost of assembly. In addition, it is precisely because the fixed frame 400 is connected to the cover plate 100 through the optically transparent adhesive layer 200, based on the characteristics of the optically transparent adhesive layer 200, in a low temperature environment, the success rate of separating the cover plate 100 from the fixed frame 400 is also significantly improved, which can reduce the difficulty of repairing the display device. Specifically, the bonding area between the side wall 420 of the fixed frame 400 and the optically transparent adhesive layer 200 is much smaller than the bonding area between the cover plate 100 and the optically transparent adhesive layer 200. During the cold disassembly process, it is highly likely that the fixed frame 400 will be separated from the optically transparent adhesive layer 200 first, which has little impact on the cover plate 100, thereby reducing the possible losses caused by disassembling the display device, thereby reducing the cost of the display device.

[0047] Also, see Figure 4 , Figure 4 for Figure 3 The schematic structural diagram of the display device from the display side is as follows: after the optically transparent adhesive layer 200 is bonded to the cover plate 100 and the side wall 420 of the fixed frame 400, there is no gap between the optically transparent adhesive layer 200 and the fixed frame 400, and the projection of the display module 300 on the cover plate 100 falls within the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100, and the projection of the display module 300 on the cover plate 100 also falls within the orthographic projection of the fixed frame 400 on the cover plate 100, that is, the edge of the optically transparent adhesive layer 200 is located outside the display module 300 and does not exceed the cover plate 100. It can be understood that the display device of this embodiment is not prone to produce a light-transmitting area 700, can reduce or avoid the halo phenomenon of the display device, and the product quality of the display device is higher.

[0048] In some embodiments of the present application, Figure 3 As shown, the width of the first optical adhesive area 210 and the side wall 420 is greater than or equal to 2.0 mm.

[0049] The display device proposed in the present application increases the bonding area between the optically transparent adhesive layer 200 and the fixed frame 400 by making the width of the bonding between the first optical adhesive area 210 and the side wall 420 greater than or equal to 2.0 mm, thereby increasing the bonding strength of the optically transparent adhesive layer 200 to the cover plate 100 and the fixed frame 400, and improving the stability of the cover plate 100 and the fixed frame 400 after bonding, so that the cover plate 100 and the fixed frame 400 are not easy to separate. Among them, when the size of the display module 300 is constant, the increase in the bonding width between the first optical adhesive area 210 and the side wall 420 is obtained by extending the optically transparent adhesive layer 200 toward the outside thereof, thereby, the area of ​​the first optical adhesive area 210 increases exponentially, and the bonding strength of the optically transparent adhesive layer 200 to the cover plate 100 and the fixed frame 400 will also increase exponentially. The width of the first optical adhesive area 210 and the side wall 420 can be any width greater than 2.0 mm. For example, the width of the first optical adhesive area 210 and the side wall 420 can be 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.2 mm, 3.5 mm, 4.0 mm, etc.

[0050] In some embodiments of the present application, Figure 3 As shown, the portion of the cover plate 100 that exceeds the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100 is the first cover plate area 110 , and the width of the first cover plate area 110 is less than or equal to 2.0 mm.

[0051] The display device proposed in the present application ensures that the optically transparent adhesive layer 200 can at least cover most of the middle area of ​​the cover plate 100 by making the width of the first cover plate area 110 less than 2.0 mm, thereby ensuring that when the display module 300 is bonded to the cover plate 100 through the optically transparent adhesive layer 200, the surface of the display module 300 can be bonded to the optically transparent adhesive layer 200, and a wider first optical adhesive area 210 is left, thereby improving the success rate of bonding the display module 300 to the cover plate 100. Of course, the bonding efficiency is also improved accordingly. The width of the first cover plate area 110 can be any width less than 2.0 mm, for example, the width of the first cover plate area 110 can be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, etc.

[0052] In some embodiments of the present application, the display module 300 includes an array substrate 330 and a color film substrate 320 stacked on the array substrate 330, the orthographic projection of the color film substrate 320 on the cover plate 100 is located within the orthographic projection of the array substrate 330 on the cover plate 100, and the portion of the orthographic projection of the array substrate 330 on the cover plate 100 that exceeds the orthographic projection of the color film substrate 320 on the cover plate 100 is the first array substrate area 331; the optically transparent adhesive layer 200 is located on a side of the color film substrate 320 away from the array substrate 330; the display device also includes a buffer adhesive 500, which is arranged between the first array substrate area 331 and the optically transparent adhesive layer 200.

[0053] It is understandable that the array substrate 330 is protruding compared to the display module 300, and the protruding portion of the array substrate 330 compared to the color filter substrate 320 is the first array substrate area 331. The color filter substrate 320 is located between the optically transparent adhesive layer 200 and the array substrate 330, and the size of the optically transparent adhesive layer 200 is not less than the display module 300. It is understandable that there is a gap between the optically transparent adhesive layer 200 and the array substrate 330, and the buffer adhesive 500 is arranged in the gap between the optically transparent adhesive layer and the array substrate 330. It is understandable that the buffer adhesive 500 is arranged around the color filter substrate 320. The buffer adhesive 500 can buffer the force between the cover plate 100 and the display module 300, reducing the probability of damage to the display module 300. Based on the selection of the material of the buffer adhesive 500, in some embodiments, the buffer adhesive 500 can also have a certain light shielding effect.

[0054] In some embodiments of the present application, the buffer adhesive 500 is a PET tape. The PET tape not only has a certain toughness, but also can be deformed to absorb energy and recover, so that the display module 300 maintains a good shape. The PET tape also has a high viscosity. After the PET tape is bonded to the optically transparent adhesive layer 200, the bonding area between the optically transparent adhesive layer 200 and the display module 300 is greatly increased, and the bonding strength between the optically transparent adhesive layer 200 and the display module 300 is also correspondingly increased, the overall consistency of the display device is improved, and relative displacement between the cover plate 100 and the display module 300 is not easy to occur.

[0055] In some embodiments of the present application, Figure 3As shown, the display module 300 also includes an upper polarizer 310 and a lower polarizer 340. The upper polarizer 310 is arranged between the optically transparent adhesive layer 200 and the color film substrate 320. The orthographic projection of the upper polarizer 310 on the cover plate 100 is located within the orthographic projection range of the array substrate 330 on the cover plate 100 and does not overlap with the first array substrate area 331; to ensure that the upper polarizer 310 does not affect the setting of the buffer adhesive 500; the lower polarizer 340 is arranged between the array substrate 330 and the bottom plate 410, and the orthographic projection of the lower polarizer 340 on the cover plate 100 is located within the orthographic projection range of the array substrate 330 on the cover plate 100 and does not overlap with the first optical adhesive area 210.

[0056] In some embodiments of the present application, the display device also includes an ink layer 800, which is disposed between the cover plate 100 and the optically transparent adhesive layer 200, and the orthographic projection of the ink layer 800 on the cover plate 100 is located within the orthographic projection range of the optically transparent adhesive layer 200 on the cover plate 100, and the orthographic projection of the ink layer 800 on the cover plate 100 covers the edge of the orthographic projection of the upper polarizer 310 on the cover plate 100, the edge of the orthographic projection of the color film substrate 320 on the cover plate 100, the edge of the orthographic projection of the array substrate 330 on the cover plate 100, and the edge of the orthographic projection of the lower polarizer 340 on the cover plate 100.

[0057] By controlling and setting the size of the ink layer 800, the edge of the upper polarizer 310, the edge of the color filter substrate 320, the edge of the array substrate 330, and the edge of the lower polarizer 340 can all be located within the coverage of the ink layer 800. Therefore, it can be understood that the ink layer 800 can block the edge area of ​​the display module 300, so that when the user reads the content displayed by the display module 300 from the display side of the display device, the edge of the upper polarizer 310, the edge of the color filter substrate 320, the edge of the array substrate 330, and the edge of the lower polarizer 340 cannot be observed. Of course, the display device is also provided with wires connected to the display module 300. The wiring method of the wires is mostly set on the peripheral side of the display module 300, which is also located within the coverage of the ink layer 800, that is, the ink layer 800 also has a good covering effect on the wires in the display device.

[0058] At the same time, when the display module 300 emits light, the ink layer 800 can absorb or reflect the light between the cover plate 100 and the fixed frame 400, thereby preventing the light from passing through the edge of the cover plate 100, effectively isolating the light passing through the edge of the display device, thereby reducing or avoiding the halo phenomenon of the display device.

[0059] The display device in the embodiment of the present application can separate the cover plate 100 from the fixing frame 400 by cold disassembly. The bonding area between the side wall 420 of the fixing frame 400 and the optically transparent adhesive layer 200 is much smaller than the bonding area between the cover plate 100 and the optically transparent adhesive layer 200. Even when the ink layer 800 is provided, the bonding area between the fixing frame 400 and the optically transparent adhesive layer 200 is much smaller than the bonding area between the cover plate 100 and the optically transparent adhesive layer 200. Therefore, during the cold disassembly process, it is highly likely that the fixing frame 400 is bonded to the optically transparent adhesive layer 200. 00 is first separated from the optically transparent adhesive layer 200, while the ink layer 800 remains covered by the optically transparent adhesive layer 200. Disconnecting the adhesive fixing frame 400 will not affect the ink layer 800. The dyne value of the ink layer 800 will be maintained within a certain range or remain unchanged. The ink layer 800 still has a good covering effect on the edge of the display module 300 and the wires connecting the display module 300, and has strong light absorption and reflection capabilities. Understandably, this also reduces the cost to a certain extent.

[0060] Based on the same inventive concept, the present application also proposes a method for preparing a display device, such as Figure 5 As shown, the method for preparing the display device comprises the following steps:

[0061] The optically transparent adhesive layer 200 is attached to the side of the cover plate 100 facing the display module 300 to obtain a first semi-finished product;

[0062] Laminating the display module 300 to the side of the optically transparent adhesive layer 200 of the first semi-finished product away from the cover plate 100 to obtain a second semi-finished product;

[0063] The fixing frame 400 is assembled on the side of the second semi-finished display module 300 away from the optically transparent adhesive layer 200 , and the side wall 420 of the fixing frame 400 is bonded to the first optical adhesive area 210 to obtain a display device.

[0064] The embodiment of the present application proposes a method for preparing the above-mentioned display device, wherein the optically transparent adhesive layer 200 is first bonded to the cover plate 100, thereby ensuring that the relative position between the optically transparent adhesive layer 200 and the cover plate 100 is accurate, and ensuring that the edge of the optically transparent adhesive layer 200 does not exceed the edge of the cover plate 100, that is, the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100 is located inside the cover plate 100, and the first semi-finished product has high precision.

[0065] The first semi-finished product and the display module 300 are bonded together. Since the orthographic projection of the display module 300 on the cover plate 100 is located within the orthographic projection of the optically transparent adhesive layer 200 on the cover plate 100, that is, the length or width of the display module 300 is not greater than the length or width of the optically transparent adhesive layer 200, the display module 300 can also be bonded to the first semi-finished product while ensuring accuracy, ensuring that the edge of the display module 300 does not exceed the edge of the optically transparent adhesive layer 200, and the second semi-finished product has high accuracy.

[0066] When the precision of the first semi-finished product and the second semi-finished product is high, the first optical adhesive area 210 at the edge of the optically transparent adhesive layer 200 has enough width to be bonded to the side wall 420 of the fixed frame 400. The fixed frame 400 is directly bonded to the first optical adhesive area 210 to obtain a display device. During the entire assembly process, the edge of the cover plate 100, the edge of the optically transparent adhesive layer 200, and the edge of the display module 300 are all easily observed. During the bonding process, the bonding precision between the cover plate 100 and the optically transparent adhesive layer 200 and between the optically transparent adhesive layer 200 and the display module 300 is high, and the yield rate of the manufactured display device is higher; at the same time, the difficulty of the process is relatively low, which improves the efficiency of assembling the display device and reduces the material cost and the time cost of assembly.

[0067] In some embodiments of the present application, the display module 300 includes an array substrate 330 and a color film substrate 320 stacked on the array substrate 330, the orthographic projection of the color film substrate 320 on the cover plate 100 is located within the orthographic projection of the array substrate 330 on the cover plate 100, and the portion of the orthographic projection of the array substrate 330 on the cover plate 100 that exceeds the orthographic projection of the color film substrate 320 on the cover plate 100 is the first array substrate area 331; before the step of preparing the second semi-finished product, the step is also included: bonding the buffer glue 500 on one side of the first array substrate area 331 close to the optically transparent glue layer 200.

[0068] When the first semi-finished product and the second semi-finished product have high precision, the fixing frame 400 is directly buckled on the cover plate 100, and the side wall 420 of the fixing frame 400 can be bonded to the optically transparent adhesive layer 200. When the size of the array substrate 330 is larger than that of the color film substrate 320, the buffer glue 500 is firstly attached to the first array substrate area 331 so that the buffer glue 500 is arranged around the color film substrate 320, and then the first semi-finished product is bonded to the display module 300 with the buffer glue 500 attached. Compared with the method of arranging the buffer glue 500 in the first array substrate area 331 by extrusion, the method proposed in the embodiment of the present application is not easy to affect the ink layer 800, so that the ink layer 800 can maintain a good shielding effect and shading effect, and the bonding surface area of ​​the buffer glue 500 and the first array substrate area 331 is large, and the installed buffer glue 500 is not easy to be twisted or compressed due to extrusion, and can better absorb stress. The buffer glue 500 in the second semi-finished product after bonding can also have a large bonding surface area with the optically transparent adhesive layer 200. After the cover plate 100 is subjected to force, it can quickly transmit the force and is less likely to have stress concentration. This can reduce the probability of stress damage to the display device and reduce production costs.

[0069] In some embodiments of the present application, before the step of preparing the first semi-finished product, the step is further included: coating an ink layer 800 on one side of the cover plate 100 close to the optically transparent adhesive layer 200. The ink layer 800 is coated on the edge of the cover plate 100 to shield the edge of the display module 300 and the wires in the display device. Coating the ink layer 800 before bonding the cover plate 100 to the optically transparent adhesive layer 200 can make the ink layer 800 on the first semi-finished product to be covered by the optically transparent adhesive layer 200, and the optically transparent adhesive will protect the ink layer 800, thereby reducing the possibility of the ink layer 800 dyne value changing, so that the ink layer 800 can maintain a good covering and shading effect. Of course, in the subsequent steps of the manufacturing method of this embodiment, there is no operation process such as dispensing that requires operating the edge of the cover plate 100, and the ink layer 800 will not be affected by other equipment processes on the production line, and its dyne value is not easily changed. The ink layer 800 of the display device can have a good covering effect and shading effect, and the yield rate of the display device is high.

[0070] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0071] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display device, characterized in that: The display device comprises: Display module; A cover plate, the cover plate being arranged on a display side of the display module; an optically transparent adhesive layer, the optically transparent adhesive layer being disposed between the display module and the cover plate; and A fixed frame, the fixed frame comprising a bottom plate and side walls arranged around the bottom plate, the bottom plate is arranged on the non-display side of the display module, and the side walls extend in a direction close to the optically transparent adhesive layer; The orthographic projection of the optically transparent adhesive layer on the cover plate is located inside the cover plate, the orthographic projection of the display module on the cover plate is located inside the orthographic projection of the optically transparent adhesive layer on the cover plate, and the portion where the orthographic projection of the optically transparent adhesive layer on the cover plate exceeds the orthographic projection of the display module on the cover plate is the first optical adhesive area; A side of the first optical adhesive area close to the display module is in contact with the side wall.

2. The display device according to claim 1, characterized in that The width of the first optical adhesive area bonded to the side wall is greater than or equal to 2.0 mm.

3. The display device according to claim 1, characterized in that The portion of the cover plate that exceeds the orthographic projection of the optically transparent adhesive layer on the cover plate is a first cover plate area, and the width of the first cover plate area is less than or equal to 2.0 mm.

4. The display device according to any one of claims 1 to 3, characterized in that: The display module comprises an array substrate and a color filter substrate stacked on the array substrate, the orthographic projection of the color filter substrate on the cover plate is located within the orthographic projection of the array substrate on the cover plate, and the portion of the orthographic projection of the array substrate on the cover plate that exceeds the orthographic projection of the color filter substrate on the cover plate is a first array substrate area; The optically transparent adhesive layer is located on a side of the color filter substrate away from the array substrate; The display device further includes a buffer adhesive, and the buffer adhesive is disposed between the first array substrate region and the optically transparent adhesive layer.

5. The display device according to claim 4, characterized in that: The buffer adhesive is a PET adhesive tape.

6. The display device according to claim 4, characterized in that: The display module also includes: an upper polarizer, wherein the upper polarizer is disposed between the optically transparent adhesive layer and the color filter substrate, wherein the orthographic projection of the upper polarizer on the cover plate is located within the orthographic projection range of the array substrate on the cover plate and does not overlap with the first array substrate area; and, A lower polarizer is disposed between the array substrate and the bottom plate, and the orthographic projection of the lower polarizer on the cover plate is located within the orthographic projection range of the array substrate on the cover plate and does not overlap with the first optical adhesive area.

7. The display device according to claim 6, characterized in that: The display device also includes an ink layer, which is arranged between the cover plate and the optically transparent adhesive layer. The orthographic projection of the ink layer on the cover plate is located within the orthographic projection range of the optically transparent adhesive layer on the cover plate. The orthographic projection of the ink layer on the cover plate covers the edge of the orthographic projection of the upper polarizer on the cover plate, the edge of the orthographic projection of the color film substrate on the cover plate, the edge of the orthographic projection of the array substrate on the cover plate, and the edge of the orthographic projection of the lower polarizer on the cover plate.

8. A method for preparing a display device according to any one of claims 1 to 7, characterized in that: The method for preparing the display device comprises the following steps: Laminating the optically transparent adhesive layer on a side of the cover plate facing the display module to obtain a first semi-finished product; Laminating the display module to the side of the optically transparent adhesive layer of the first semi-finished product away from the cover plate to obtain a second semi-finished product; The fixing frame is assembled on a side of the display module of the second semi-finished product away from the optically transparent adhesive layer, and the side wall of the fixing frame is bonded to the first optical adhesive area to obtain the display device.

9. The method for manufacturing a display device according to claim 8, characterized in that: The display module comprises an array substrate and a color filter substrate stacked on the array substrate, the orthographic projection of the color filter substrate on the cover plate is located within the orthographic projection of the array substrate on the cover plate, and the portion of the orthographic projection of the array substrate on the cover plate that exceeds the orthographic projection of the color filter substrate on the cover plate is a first array substrate area; Before the step of preparing the second semi-finished product, the method further comprises the following steps: A buffer adhesive is attached to a side of the first array substrate region close to the optically transparent adhesive layer.

10. The method for manufacturing a display device according to claim 9, characterized in that: Before the step of preparing the first semi-finished product, the method further comprises the following steps: An ink layer is coated on a side of the cover plate close to the optically transparent adhesive layer.

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