Display device

Abstract

An embodiment of the present application provides a display device. The display device includes a bending adhesive layer, a backlight module, and a display module; the backlight module and the display module are connected by the bending adhesive layer; an air flow channel is provided between the display module and the bending adhesive layer, and there is a pressing area between the backlight module and the bending adhesive layer; when there are bubbles in the pressing area, the bubbles are discharged through the air flow channel.

Description

Technical Field

[0001] This application relates to the technical field of display devices, and particularly to a display device. Background Art

[0002] With the continuous development of display devices, people's requirements for the display of display devices are also gradually increasing. How to ensure the stability of the display performance of display devices has become an important indicator for measuring the quality of display devices. Currently, a display device includes a backlight module and a display module, and the display module is connected to the backlight module. However, bubbles may occur during the manufacturing process of the display module and the backlight module, resulting in a low yield rate of the display device. Summary of the Invention

[0003] Embodiments of this application provide a display device to solve the problem that bubbles may occur during the manufacturing process of the display module and the backlight module in related technologies, resulting in a low yield rate of the display device.

[0004] To solve the above technical problems, this application is implemented as follows:

[0005] Embodiments of this application provide a display device, which includes a bending adhesive layer, a backlight module, and a display module;

[0006] The backlight module and the display module are connected through the bending adhesive layer;

[0007] An air flow channel is provided between the display module and the bending adhesive layer, and a pressing area exists between the backlight module and the bending adhesive layer;

[0008] When there are bubbles in the pressing area, the bubbles are discharged through the air flow channel.

[0009] Optionally, a support film layer is provided between the display module and the bending adhesive layer, and the bending adhesive layer includes a first adhesive layer, a polyester resin layer, and a second adhesive layer;

[0010] The polyester resin layer is located between the first adhesive layer and the second adhesive layer, the first adhesive layer is connected to the backlight module, and the second adhesive layer is connected to the support film layer.

[0011] Optionally, the air flow channel includes a first channel and a second channel;

[0012] The first channel communicates with the pressing area, and the first channel communicates with the second channel;

[0013] The first channel is provided in at least one of the first adhesive layer and the polyester resin layer, and the second channel is provided in at least one of the second adhesive layer and the polyester resin layer.

[0014] Optionally, the first channel is a plurality of through-holes provided on the first adhesive layer, the plurality of through-holes penetrate the first adhesive layer, and the plurality of through-holes extend in a direction perpendicular to the display device;

[0015] The second channel is a through-groove provided in the polyester resin layer, the through-groove extends from a first surface of the polyester resin layer to a second surface of the polyester resin layer, wherein the first surface and the second surface of the polyester resin layer are two opposite surfaces of the polyester resin layer, and both the first surface and the second surface of the polyester resin layer are parallel to the direction perpendicular to the display device.

[0016] Optionally, the through-groove is opened on a third surface of the polyester resin layer, and the third surface of the polyester resin layer is a surface in contact with the first adhesive layer.

[0017] Optionally, the polyester resin layer includes a plurality of polyester resin blocks, the plurality of polyester resin blocks are arranged at intervals, and a gap between two adjacent polyester resin blocks forms the through-groove.

[0018] Optionally, the air flow channel includes a first channel and a second channel;

[0019] The first channel communicates with the pressing area, and the first channel communicates with the second channel;

[0020] The first channel penetrates the bending adhesive layer and extends from the first adhesive layer to the second adhesive layer, and the second channel is provided in the support film layer.

[0021] Optionally, the first channel is a plurality of through-holes opened in the bending adhesive layer, and the plurality of through-holes extend from the first adhesive layer to the second adhesive layer;

[0022] The second channel is a through-groove opened in the support film layer, the through-groove extends from a first surface of the support film layer to a second surface of the support film layer, the first surface and the second surface of the support film layer are two opposite surfaces of the support film layer, and both the first surface and the second surface of the support film layer are parallel to the direction perpendicular to the display device.

[0023] Optionally, the plurality of through-holes are distributed in an array.

[0024] Optionally, the plurality of through-holes are arranged at equal intervals.

[0025] Optionally, the distance between any two adjacent through-holes is 1 mm to 2 mm.

[0026] Optionally, the sizes of the notch and the bottom of the through groove in a first direction are different, where the first direction is perpendicular to the display module, the notch of the through groove is the part of the through groove close to the backlight module, and the bottom of the through groove is the part of the through groove close to the display module.

[0027] Optionally, the size of the notch of the through groove in the first direction is smaller than the size of the bottom of the through groove in the first direction.

[0028] Optionally, the backlight module includes an optical film layer, a backplane, a flexible circuit board, and a battery;

[0029] The bending adhesive layer is fixed in a first area on a first surface of the display module, and the battery is fixed in a second area on the first surface of the display module, where the first surface is a surface opposite to the display surface of the display module, the first area is the area where the bent part of the display device is located, and the second area is the area of the display device except the bent part;

[0030] The backplane is fixed on the bending adhesive layer through the optical film layer, and the flexible circuit board is bent and arranged on the backplane.

[0031] In the embodiments of the present application, since the backlight module and the display module are connected through the bending adhesive layer, an air flow channel is provided between the display module and the bending adhesive layer, and there is a pressing area between the backlight module and the bending adhesive layer. Therefore, if there are bubbles in the pressing area, the bubbles can be discharged from the air flow channel, thereby avoiding the accumulation of bubbles in the pressing area, resulting in a reduction in the contact area between the backlight module and the display module, and the problem that the backlight module and the display module may be separated, which increases the defective rate of the display device. That is, in the embodiments of the present application, by providing an air flow channel between the display module and the bending adhesive layer, the bubbles in the pressing area can be discharged through the air flow channel, thereby increasing the contact area between the backlight module and the display module and improving the yield rate of the display device. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 Schematic diagram showing the existence of bubbles between a display module in the prior art and a bending adhesive layer;

[0034] Figure 2Schematic diagram showing the bubble flow in the prior art;

[0035] Figure 3 Schematic structural diagram of a display device provided by an embodiment of the present application;

[0036] Figure 4 One of the schematic diagrams showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0037] Figure 5 Another schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0038] Figure 6 The third schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0039] Figure 7 The fourth schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0040] Figure 8 The fifth schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0041] Figure 9 The fifth schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0042] Figure 10 The sixth schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0043] Figure 11 The seventh schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0044] Figure 12 The eighth schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0045] Figure 13 The ninth schematic diagram showing the arrangement of an air flow channel in a bent adhesive layer provided by an embodiment of the present application;

[0046] Figure 14 One of the schematic diagrams showing the arrangement of a first channel on a first adhesive layer provided by an embodiment of the present application;

[0047] Figure 15 One of the schematic diagrams showing the arrangement of a second channel on a polyester resin layer provided by an embodiment of the present application;

[0048] Figure 16 Another schematic diagram showing the arrangement of a second channel on a polyester resin layer provided by an embodiment of the present application;

[0049] Figure 17 Figure 3 showing a schematic diagram of a second channel provided on a polyester resin layer according to an embodiment of the present application;

[0050] Figure 18 Figure 4 showing a schematic diagram of a second channel provided on a polyester resin layer according to an embodiment of the present application;

[0051] Figure 19 Figure 2 showing a schematic diagram of a first channel provided on a first adhesive layer according to an embodiment of the present application;

[0052] Figure 20 Figure 3 showing a schematic diagram of a first channel provided on a first adhesive layer according to an embodiment of the present application;

[0053] Figure 21 Figure 4 showing a schematic diagram of a first channel provided on a first adhesive layer according to an embodiment of the present application;

[0054] Figure 22 Figure 5 showing a schematic diagram of a first channel provided on a first adhesive layer according to an embodiment of the present application.

[0055] Reference numerals:

[0056] 10: Curved adhesive layer; 20: Backlight module; 30: Display module; 40: Air flow channel; 50: Support film layer; 11: First adhesive layer; 12: Polyester resin layer; 13: Second adhesive layer; 21: Optical film layer; 22: Back plate; 23: Flexible circuit board; 24: Battery; 41: First channel; 42: Second channel; 121: Polyester resin block. Detailed implementation manners

[0057] Next, the technical solutions in some embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0058] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular form "comprises" and the present participle form "comprising", are interpreted in an open, inclusive sense, i.e., "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example", or "some examples", etc. are intended to indicate that the specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0059] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more.

[0060] When describing some embodiments, the expression "electrically connected" and its derivatives may be used. For example, when describing some embodiments, the term "electrically connected" may be used to indicate that two or more components have direct physical contact or electrical contact with each other.

[0061] "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0062] The use of "configured to" herein means open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps.

[0063] As used herein, "substantially" includes the stated value and the average value within an acceptable deviation range of the specific value, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurement being discussed and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system).

[0064] In this article, "same layer" refers to a layer structure formed by using the same film-forming process to form a film layer for forming a specific pattern, and then through a single patterning process using the same mask. Depending on the different specific patterns, the single patterning process may include multiple exposure, development, or etching processes, and the specific patterns in the formed layer structure may be continuous or discontinuous, and these specific patterns may also be at different heights or have different thicknesses. Conversely, "different layer" refers to a layer structure formed by using corresponding film-forming processes to form a film layer for forming a specific pattern, and then through a patterning process using the corresponding mask. For example, "two layer structures are arranged in different layers" means that the two layer structures are formed in corresponding process steps (film-forming process and patterning process).

[0065] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions is exaggerated for clarity. Accordingly, variations in the shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are contemplated. Thus, exemplary embodiments should not be construed as limited to the shape of the regions shown herein, but include shape deviations resulting from, for example, manufacturing. For example, an etched region shown as rectangular will typically have curved features. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to depict the actual shape of the regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0066] Before introducing the display device provided by the embodiments of the present application, first, the manufacturing process of the display device in the prior art and the existing technical problems are described as follows: As Figure 1 and Figure 2 shown, the display device includes a bending adhesive layer 10, a backlight module 20, and a display module 30. The backlight module 20 and the display module 30 are connected through the bending adhesive layer 10. Moreover, there is a pressing area between the backlight module 20 and the bending adhesive layer 10, and air bubbles are generated in the pressing area, so that the air bubbles flow between the backlight module 20 and the bending adhesive layer 10, resulting in the easy separation of the backlight module 20 and the display module 30, thereby reducing the yield rate of the display device. Among them, Figure 1 the O in Figure 2 is an air bubble, and the flowing direction of the air bubble between the backlight module 20 and the bending adhesive layer 10 is as shown by the direction of F in

[0067] As Figures 3 to 22 shown, the display device includes: a bending adhesive layer 10, a backlight module 20, and a display module 30.

[0068] The backlight module 20 and the display module 30 are connected by a bending adhesive layer 10. An air flow channel 40 is provided between the display module 30 and the bending adhesive layer 10, and there is a pressing area between the backlight module 20 and the bending adhesive layer 10. When there are air bubbles in the pressing area, the air bubbles are discharged through the air flow channel 40.

[0069] In the embodiment of the present application, since the backlight module 20 and the display module 30 are connected by the bending adhesive layer 10, an air flow channel 40 is provided between the display module 30 and the bending adhesive layer 10, and there is a pressing area between the backlight module 20 and the bending adhesive layer 10. Therefore, if there are air bubbles in the pressing area, the air bubbles can be discharged from the air flow channel 40, so as to avoid the accumulation of air bubbles in the pressing area, resulting in a reduction in the contact area between the backlight module 20 and the display module 30, and the problem that the backlight module 20 and the display module 30 may be separated, which may increase the defective rate of the display device. That is to say, in the embodiment of the present application, by providing the air flow channel 40 between the display module 30 and the bending adhesive layer 10, the air bubbles in the pressing area can be discharged through the air flow channel 40, so as to increase the contact area between the backlight module 20 and the display module 30 and improve the yield rate of the display device.

[0070] It should be noted that, in the embodiment of the present application, the backlight module 20 may include an optical film layer 21, a backplane 22, a flexible circuit board 23, and a battery 24. The bending adhesive layer 10 is fixed in a first area on the first surface of the display module 30, and the battery 24 is fixed in a second area on the first surface of the display module 30, where the first surface is a surface opposite to the display surface of the display module 30, the first area is the area where the bent part of the display device is located, and the second area is the area of the display device except the bent part. The backplane 22 is fixed on the bending adhesive layer 10 through the optical film layer 21, and the flexible circuit board 23 is bent and arranged on the backplane 22.

[0071] In addition, in some embodiments, as Figure 3 shown, a support film layer 50 may be provided between the display module 30 and the bending adhesive layer 10. The bending adhesive layer 10 includes a first adhesive layer 11, a polyester resin layer 12, and a second adhesive layer 13. The polyester resin layer 12 is located between the first adhesive layer 11 and the second adhesive layer 13. The first adhesive layer 11 is connected to the backlight module 20, and the second adhesive layer 13 is connected to the support film layer 50.

[0072] Since the bent adhesive layer 10 includes a first adhesive layer 11, a polyester resin layer 12, and a second adhesive layer 13, and the polyester resin layer 12 is located between the first adhesive layer 11 and the second adhesive layer 13, the first adhesive layer 11 can be connected to the backlight module 20, that is, the first adhesive layer 11 is bonded to the backlight module 20, and the second adhesive layer 13 is connected to the support film layer 50, that is, the second adhesive layer 13 is bonded to the support film layer 50. In addition, by providing the support film layer 50, with the support film layer 50 located between the display module 30 and the bent adhesive layer 10, the support film layer 50 can provide a certain supporting effect on the display module 30, which is beneficial for the display module 30 to perform display.

[0073] In addition, in the embodiments of the present application, the air flow channel 40 can be formed in different ways, and the following several ways are taken as examples for illustration:

[0074] Way (1): As Figure 4 or Figure 5 shown, the air flow channel 40 can include a first channel 41 and a second channel 42. The first channel 41 communicates with the pressing area, and the first channel 41 communicates with the second channel 42; the first channel 41 is provided in at least one of the first adhesive layer 11 and the polyester resin layer 12, and the second channel 42 is provided in at least one of the second adhesive layer 13 and the polyester resin layer 12.

[0075] Since the first channel 41 communicates with the pressing area, the gas in the bubbles in the pressing area can enter the first channel 41. Since the first channel 41 communicates with the second channel 42, the gas entering the first channel 41 can enter the second channel 42 and be discharged from the second channel 42, so that the gas in the bubbles in the pressing area can be discharged. In addition, the first channel 41 is provided in at least one of the first adhesive layer 11 and the polyester resin layer 12, and the second channel 42 is provided in at least one of the second adhesive layer 13 and the polyester resin layer 12, which is equivalent to that the air flow channel 40 is only provided in the bent adhesive layer 10, avoiding the problem of affecting the strength of other layers due to the opening of the air flow channel 40 in other layers.

[0076] It should be noted that the first channel 41 can be provided only in the first adhesive layer 11, the first channel 41 can also be provided only in the polyester resin layer 12, and the first channel 41 can also be provided in both the first adhesive layer 11 and the polyester resin layer 12. In addition, the second channel 42 can be provided only in the second adhesive layer 13, the second channel 42 can also be provided only in the polyester resin layer 12, and the second channel 42 can also be provided in both the second adhesive layer 13 and the polyester resin layer 12. In this regard, the embodiments of the present application do not make any limitations here.

[0077] In addition, in some embodiments, such as Figure 6 or Figure 7As shown, the first channel 41 can be a plurality of through-holes provided on the first adhesive layer 11. The plurality of through-holes penetrate the first adhesive layer 11, and the plurality of through-holes extend in a direction perpendicular to the display device. The second channel 42 is a through-groove provided in the polyester resin layer 12. The through-groove extends from the first surface of the polyester resin layer 12 to the second surface of the polyester resin layer 12. Among them, the first surface and the second surface of the polyester resin layer 12 are two opposite surfaces of the polyester resin layer 12, and both the first surface and the second surface of the polyester resin layer 12 are parallel to the direction perpendicular to the display device.

[0078] When the first channel 41 is a plurality of through-holes provided on the first adhesive layer 11 and the plurality of through-holes penetrate the first adhesive layer 11, at this time, the gas in the bubbles in the pressing area can enter the plurality of through-holes. And the second through-groove is a through-groove of the polyester resin layer 12. The through-groove extends from the first surface of the polyester resin layer 12 to the second surface of the polyester resin layer 12, which is equivalent to the through-groove penetrating the polyester resin layer 12 along the direction from the first surface to the second surface. Thus, the gas that enters the through-holes can enter the through-groove, and then flow out from the notch of the through-groove located on the first surface, or flow out from the notch of the through-groove located on the second surface, avoiding having bubbles in the pressing area, so that the gas in the bubbles can flow out quickly. Among them, the flow direction of the bubbles is as Figure 6 shown by the direction F in

[0079] Among them, the polyester resin layer 12 has a surface facing the first adhesive layer 11. The first surface can be perpendicular to the surface of the polyester resin layer 12 facing the first adhesive layer 11, and the second surface can also be perpendicular to the surface of the polyester resin layer 12 facing the first adhesive layer 11.

[0080] It should be noted that the shape of the through-holes can be set according to actual needs. For example, the through-holes are circular holes, and for another example, the through-holes are square holes. The specific shape of the through-holes is not limited in the embodiments of the present application.

[0081] In addition, in some embodiments, as Figure 6 shown, the through-groove can be opened on the third surface of the polyester resin layer 12. The third surface of the polyester resin layer 12 is the surface in contact with the first adhesive layer 11.

[0082] When the through-groove is provided on the third surface of the polyester resin layer 12, at this time, the through-holes on the first adhesive layer 11 can communicate with the through-groove, so that the gas in the bubbles in the pressing area can flow out from the through-groove. In addition, when the through-groove is provided on the third surface of the polyester resin layer 12, at this time, the through-groove has less influence on the strength of the polyester resin layer 12, and the overall bonding ability of the bending adhesive layer 10 changes less, and the overall structure of the bending adhesive layer 10 is relatively stable.

[0083] It should be noted that when the through groove is provided on the third surface of the polyester resin layer 12, at this time, when forming the bending adhesive layer 10, a bottom film can be obtained first, and then the second adhesive layer 13 is attached to the bottom film. Then, the polyester resin layer 12 is obtained. A through groove is provided on one surface of the polyester resin layer 12. The surface of the polyester resin layer 12 without the through groove is attached to the second adhesive layer 13. Then, the first adhesive layer 11 is obtained. A plurality of through holes are provided on the first adhesive layer 11. The first adhesive layer 11 is attached to the surface of the polyester resin layer 12 provided with the through groove.

[0084] In addition, in some embodiments, as Figure 7 shown, the polyester resin layer 12 may include a plurality of polyester resin blocks 121. The plurality of polyester resin blocks 121 are arranged at intervals, and the gaps between adjacent two polyester resin blocks 121 form through grooves.

[0085] When the polyester resin layer 12 includes a plurality of polyester resin blocks 121, at this time, a plurality of polyester resin blocks 121 can be directly bonded to the second adhesive layer 13, and the plurality of polyester resin blocks 121 are distributed at intervals, so that the gaps between adjacent two polyester resin blocks 121 can form through grooves, and the through grooves can be used as the second channels 42, so that gas can flow out from the through grooves. In addition, when the polyester resin layer 12 includes a plurality of polyester resin blocks 121, the plurality of polyester resin blocks 121 can be directly bonded to the second adhesive layer 13, making the processing technology of the bending film layer relatively simple.

[0086] It should be noted that when the polyester resin layer 12 includes a plurality of polyester resin blocks 121, at this time, when forming the bending adhesive layer 10, a bottom film can be obtained first, and then the second adhesive layer 13 is attached to the bottom film. Then, a plurality of polyester resin blocks 121 are obtained. A plurality of polyester resin blocks 121 are attached to the second adhesive layer 13, and the plurality of polyester resin blocks 121 are distributed at intervals, and there are gaps between adjacent two polyester resin blocks 121. Then, the first adhesive layer 11 is obtained. A plurality of through holes are provided on the first adhesive layer 11. The first adhesive layer 11 is attached to the plurality of polyester resin blocks 121.

[0087] In addition, in the embodiments of the present application, when a through groove is provided on the polyester resin layer 12 and through holes are provided on the first adhesive layer 11 and the through holes penetrate through the first adhesive layer 11, at this time, one through groove can communicate with a plurality of through holes, and the width of the through groove can be greater than the aperture of the through hole, so as to ensure that all the gas entering the through hole can enter the through groove. For example, as Figure 13 shown, the width of the through groove is B, the aperture of the through hole is A, B is 1 to 1.5 times of A, that is, B = A*(1~1.5). In addition, when a plurality of through grooves are provided on the support film layer 50, at this time, the distance between the midlines of adjacent two through grooves among the plurality of through grooves is greater than the aperture of the through hole. For example, as Figure 13As shown, the distance between the midlines of two adjacent through slots is B1, the aperture of the through hole is A, and B1 is 2 to 3 times A, that is, B1 = A*(2 - 3). Among them, the through slot on the polyester resin can be the through slot on the third surface of the polyester resin or the through slot formed by the gap between two adjacent polyester blocks.

[0088] Method (2): As Figure 12 shown, the air flow channel 40 may include a first channel 41 and a second channel 42. The first channel 41 communicates with the pressing area, and the first channel 41 communicates with the second channel 42. The first channel 41 penetrates the curved adhesive layer 10 and extends from the first adhesive layer 11 to the second adhesive layer 13, and the second channel 42 is provided in the support film layer 50.

[0089] Since the first channel 41 communicates with the pressing area, the gas in the bubbles in the pressing area can enter the first channel 41. Since the first channel 41 communicates with the second channel 42, the gas entering the first channel 41 can enter the second channel 42 and be discharged from the second channel 42, so that the gas in the bubbles in the pressing area can be discharged. In addition, the first channel 41 penetrates the curved adhesive layer 10, and the second channel 42 is provided in the support film layer 50. After the gas in the bubbles in the pressing area enters the first channel 41, the gas can pass through the curved adhesive layer 10 and then enter the second channel 42 of the support film layer 50 and be discharged from the second channel 42 of the support film layer 50.

[0090] In addition, in some embodiments, the first channel 41 may be a plurality of through holes opened in the curved adhesive layer 10, and the plurality of through holes extend from the first adhesive layer 11 to the second adhesive layer 13. The second channel 42 is a through slot opened in the support film layer 50, and the through slot extends from the first surface of the support film layer 50 to the second surface of the support film layer 50. The first surface and the second surface of the support film layer 50 are two opposite surfaces of the support film layer 50, and both the first surface and the second surface of the support film layer 50 are parallel to the direction perpendicular to the display device.

[0091] When the first channel 41 is a plurality of through holes formed in the bent adhesive layer 10 and extending from the first adhesive layer 11 to the second adhesive layer 13, at this time, it is equivalent to providing a through hole penetrating the bent adhesive layer 10 on the bent adhesive layer 10, and using this through hole as the first channel 41, so that the gas in the bubbles in the pressing area can enter this through hole. In addition, the second through groove is a through groove formed in the support film layer 50 and extending from the first surface of the support film layer 50 to the second surface of the support film layer 50, which is equivalent to the through groove penetrating the support film layer 50 along the direction from the first surface to the second surface of the support film layer 50. Thus, the gas entering the through hole can enter the through groove and then flow out from the notch of the through groove located on the first surface or from the notch of the through groove located on the second surface, avoiding bubbles in the pressing area and enabling the gas in the bubbles to flow out quickly.

[0092] Among them, the support film layer 50 has a surface facing the second adhesive layer 13. The first surface can be perpendicular to the surface of the support film layer 50 facing the second adhesive layer 13, and the second surface can also be perpendicular to the surface of the support film layer 50 facing the second adhesive layer 13.

[0093] It should be noted that the shape of the through hole can be set according to actual needs. For example, the through hole is a circular hole, or for another example, the through hole is a square hole. The specific shape of the through hole is not limited in the embodiments of the present application.

[0094] In addition, in the embodiments of the present application, when a through groove is provided on the support film layer 50 and a through hole is provided on the bent film layer and the through hole penetrates the bent film layer, at this time, one through groove can communicate with a plurality of through holes, and the width of the through groove can be greater than the aperture of the through hole, so as to ensure that all the gas entering the through hole can enter the through groove. For example, as Figure 12 shown, the width of the through groove is B, the aperture of the through hole is A, and B is 1 to 1.5 times of A, that is, B = A * (1 - 1.5). In addition, when a plurality of through grooves are provided on the support film layer 50, at this time, the distance between the midlines of two adjacent through grooves among the plurality of through grooves is greater than the aperture of the through hole. For example, as Figure 12 shown, the distance between the midlines of two adjacent through grooves is B1, the aperture of the through hole is A, and B1 is 2 to 3 times of A, that is, B1 = A * (2 - 3).

[0095] In addition, in some embodiments, as Figures 19 to 22 shown, a plurality of through holes are distributed in an array.

[0096] When multiple through-hole arrays are distributed, at this time, it is equivalent to the distribution of multiple through-hole arrays on the first adhesive layer 11, or the distribution of multiple through-hole arrays penetrating the curved adhesive layer 10. In addition, the curved adhesive layer 10 includes a first adhesive layer 11 and a second adhesive layer 13. At this time, whether it is the distribution of multiple through-hole arrays on the first adhesive layer 11 or the distribution of multiple through-hole arrays penetrating the curved adhesive layer 10, multiple through-holes penetrate at least one adhesive layer, so the through-holes will have a certain impact on the bonding performance of the adhesive layer. However, distributing multiple through-hole arrays can minimize the impact of multiple through-holes on the bonding performance of the adhesive layer, which is beneficial for the adhesive layer to bond.

[0097] It should be noted that multiple through-holes can be distributed in an S-shaped array, that is, a target number of through-holes among multiple through-holes are distributed in an S shape, so that multiple through-holes distributed in an S-shaped array can be arrayed on the adhesive layer. Of course, a target number of through-holes among multiple through-holes can also form a square, so that multiple through-holes distributed in a square array can be arrayed on the adhesive layer. The specific form of the distribution of multiple through-hole arrays is not limited in this application.

[0098] In addition, in some embodiments, multiple through-holes are arranged at equal intervals.

[0099] When multiple through-holes are arranged at equal intervals, at this time, it is equivalent to that the distance between any two adjacent through-holes is equal, so that multiple through-holes are evenly distributed, making the influence of multiple through-holes on the adhesive layer smaller, that is, the influence of multiple through-holes on the bonding performance of the adhesive layer is smaller. For example, as Figure 12 shown, A1 represents the distance between two adjacent through-holes, and A2 represents the distance between another two adjacent through-holes, and A1 = A2.

[0100] In addition, in the embodiments of the present application, the distance between any two adjacent through-holes is 1 mm to 2 mm. That is, the distance between any two adjacent through-holes can be any value from 1 mm to 2 mm. For example, the distance between two adjacent through-holes is 1 mm, or for another example, the distance between two adjacent through-holes is 1.5 mm, or for another example, the distance between two adjacent through-holes is 2 mm.

[0101] In addition, in some embodiments, as Figures 16 to 18 shown, the dimensions of the notch of the through-groove and the bottom of the through-groove in the first direction are different, where the first direction is perpendicular to the display module 30. The notch of the through-groove is the part of the through-groove close to the backlight module 20, and the bottom of the through-groove is the part of the through-groove close to the display module 30.

[0102] When the dimensions of the notch and the bottom of the through groove in the first direction are different, that is, the dimensions of the notch and the bottom of the through groove on the polyester resin layer 12 in the first direction are different, and the polyester resin layer 12 is bonded to the first adhesive layer 11 and the second adhesive layer 13 respectively. Thus, the adhesive of the first adhesive layer 11 may not completely block the through groove, enabling the through groove to have the ability to conduct gas.

[0103] It should be noted that in the embodiment of the present application, in the first direction, as Figure 15 shown, the dimension of the notch of the through groove may be the same as the dimension of the bottom of the through groove, that is, the through groove may be a U-shaped groove.

[0104] In addition, in some embodiments, as Figure 16 shown, the dimension of the notch of the through groove in the first direction is smaller than the dimension of the bottom of the through groove in the first direction.

[0105] When in the first direction, the dimension of the notch of the through groove is smaller than the dimension of the bottom, at this time, when the polyester resin layer 12 is bonded to the first adhesive layer 11, even if part of the adhesive of the first adhesive layer 11 enters the notch of the through groove, it will not completely block the through groove. Thus, it can be ensured that the through groove has the ability to conduct gas, enabling the gas entering the through hole in the first adhesive layer 11 to flow out through the through groove after entering the through groove. That is, when the dimension of the notch of the through groove in the first direction is smaller than the dimension of the bottom, it can be ensured that the through groove is not completely blocked, which is beneficial to the through groove to conduct gas.

[0106] Of course, in the embodiment of the present application, the dimension of the notch of the other through groove in the first direction may also be smaller than the dimension of the bottom of the through groove in the first direction. For example, as Figure 17 shown, the through groove is a V-shaped groove. The specific shape of the through groove is not limited in the embodiment of the present application.

[0107] In the embodiment of the present application, since the backlight module 20 and the display module 30 are connected by the bending adhesive layer 10, an air flow channel 40 is provided between the display module 30 and the bending adhesive layer 10, and there is a pressing area between the backlight module 20 and the bending adhesive layer 10. Therefore, if there are bubbles in the pressing area, the bubbles can be discharged from the air flow channel 40, thus avoiding the accumulation of bubbles in the pressing area, which may lead to a reduction in the contact area between the backlight module 20 and the display module 30, and the problem that the backlight module 20 and the display module 30 may be separated, resulting in an increase in the defective rate of the display device. That is to say, in the embodiment of the present application, by providing the air flow channel 40 between the display module 30 and the bending adhesive layer 10, the bubbles in the pressing area can be discharged through the air flow channel 40, thereby increasing the contact area between the backlight module 20 and the display module 30 and improving the yield rate of the display device.

[0108] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0109] Although optional embodiments of the embodiments of the present application have been described, once those skilled in the art learn the basic creative concept, additional changes and modifications can be made to these embodiments. Therefore, the appended claims are intended to be construed as including the optional embodiments as well as all changes and modifications that fall within the scope of the embodiments of the present application.

[0110] Finally, it should also be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such article or terminal device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the article or terminal device including the element.

[0111] The technical solutions provided by the present application have been introduced in detail above. Specific examples are used in this text to elaborate on the principles and implementation manners of the present application. At the same time, for those of ordinary skill in the art, according to the principles and implementation manners of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A display device, characterized in that, The display device includes a bending adhesive layer, a backlight module, and a display module; The backlight module and the display module are connected through the bending adhesive layer; An air flow channel is provided between the display module and the bending adhesive layer, and a pressing area exists between the backlight module and the bending adhesive layer; When there are bubbles in the pressing area, the bubbles are discharged through the air flow channel; Wherein, a support film layer is provided between the display module and the bending adhesive layer, and the bending adhesive layer includes a first adhesive layer, a polyester resin layer, and a second adhesive layer; the polyester resin layer is located between the first adhesive layer and the second adhesive layer, the first adhesive layer is connected to the backlight module, and the second adhesive layer is connected to the support film layer.

2. The display device according to claim 1, characterized in that, The air flow channel includes a first channel and a second channel; The first channel communicates with the pressing area, and the first channel communicates with the second channel; The first channel is provided in at least one of the first adhesive layer and the polyester resin layer, and the second channel is provided in at least one of the second adhesive layer and the polyester resin layer.

3. The display device according to claim 2, characterized in that, The first channel is a plurality of through holes provided on the first adhesive layer, the plurality of through holes penetrate the first adhesive layer, and the plurality of through holes extend in a direction perpendicular to the display device; The second channel is a through groove provided in the polyester resin layer, the through groove extends from a first surface of the polyester resin layer to a second surface of the polyester resin layer, wherein the first surface and the second surface of the polyester resin layer are two opposite surfaces of the polyester resin layer, and the first surface and the second surface of the polyester resin layer are both parallel to the direction perpendicular to the display device.

4. The display device according to claim 3, characterized in that, The through groove is opened on a third surface of the polyester resin layer, and the third surface of the polyester resin layer is a surface in contact with the first adhesive layer.

5. The display device according to claim 3, characterized in that, The polyester resin layer includes a plurality of polyester resin blocks, the plurality of polyester resin blocks are arranged at intervals, and a gap between two adjacent polyester resin blocks forms the through groove.

6. The display device according to claim 1, wherein The air flow channel includes a first channel and a second channel; The first channel communicates with the pressing area, and the first channel communicates with the second channel; The first channel penetrates the bending adhesive layer and extends from the first adhesive layer to the second adhesive layer, and the second channel is provided in the support film layer.

7. The display device according to claim 6, wherein The first channel is a plurality of through holes opened in the bending adhesive layer, and the plurality of through holes extend from the first adhesive layer to the second adhesive layer; The second channel is a through groove opened in the support film layer, the through groove extends from a first surface of the support film layer to a second surface of the support film layer, the first surface and the second surface of the support film layer are two opposite surfaces of the support film layer, and the first surface and the second surface of the support film layer are both parallel to the direction perpendicular to the display device.

8. The display device according to claim 3 or 7, characterized in that, The plurality of through holes are arranged in an array.

9. The display device according to claim 8, wherein The plurality of through holes are arranged at equal intervals.

10. The display device according to claim 9, wherein The distance between any two adjacent through holes is 1 millimeter to 2 millimeters.

11. The display device according to claim 3, characterized in that, The dimensions of the notch of the through groove and the bottom of the through groove in the first direction are different, where the first direction is perpendicular to the display module, the notch of the through groove is the part of the through groove close to the backlight module, and the bottom of the through groove is the part of the through groove close to the display module.

12. The display device according to claim 11, wherein The dimension of the notch of the through groove in the first direction is smaller than the dimension of the bottom of the through groove in the first direction.

13. The display device according to claim 1, wherein The backlight module includes an optical film layer, a backplane, a flexible circuit board, and a battery; The bending adhesive layer is fixed in the first region of the first surface of the display module, and the battery is fixed in the second region of the first surface of the display module, where the first surface is a surface opposite to the display surface of the display module, the first region is the region where the bending part of the display device is located, and the second region is the region of the display device except the bending part; The backplane is fixed on the bending adhesive layer through the optical film layer, and the flexible circuit board is bent and arranged on the backplane.

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