Display device and method of manufacturing the same

Abstract

Provided is a display device and a manufacturing method thereof. The display device comprises: a display module, the display module comprising a first outer surface, a second outer surface and a side surface; an adhesive tape, the adhesive tape comprising: a first portion attached to the edge of the first outer surface of the display module; and a second portion attached to the side surface of the display module; a covering component, the covering component and the display module are arranged oppositely and spaced apart; and a pressing component, the pressing component comprising: a main body, the main body is arranged between the covering component and the display module and is pressed at least on the end of the first portion of the adhesive tape, and the space between the covering component and the display module is divided into a first space and a second space; and at least one through hole formed in the main body, the at least one through hole connecting the first space and the second space.

Description

Technical Field

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

[0002] In recent years, liquid crystal display devices have been widely used. Current liquid crystal display devices generally include a backlight module and a display panel. The display panel of the liquid crystal display device does not emit light itself, and uses the light provided by the backlight module to realize the function of displaying images. Therefore, it is necessary to bond the backlight module, the display panel and a covering component such as a cover plate to form the display device.

[0003] With the continuous advancement of technology, various display devices including liquid crystal display devices are developing towards narrow frame. In the current narrow frame display devices, various bonding methods have their own defects and need to be improved. Summary of the invention

[0004] In order to solve at least one aspect of the above problems, embodiments of the present disclosure provide a display device and a method for manufacturing the display device.

[0005] According to one aspect, there is provided a display device, comprising:

[0006] A display module, wherein the display module comprises a first outer surface, a second outer surface and a side surface, wherein the first outer surface and the second outer surface are arranged opposite to each other, the side surface connects the first outer surface and the second outer surface, and the first outer surface is located at a light emitting side of the display module;

[0007] An adhesive tape, comprising:

[0008] A first portion attached to an edge of a first outer surface of the display module; and a second portion attached to a side surface of the display module;

[0009] a covering component, the covering component and the display module are arranged opposite to each other and spaced apart; and a pressing belt component, the pressing belt component comprising:

[0010] a main body portion, which is disposed between the cover member and the display module and is pressed at least on an end portion of the first portion of the tape, and divides a space between the cover member and the display module into a first space and a second space; and

[0011] At least one through hole is formed in the main body, and the at least one through hole communicates the first space and the second space.

[0012] For example, the main body includes two or more through holes, and each of the through holes communicates with the first space and the second space.

[0013] For example, the thickness of the main body is less than or equal to the spacing distance between the display module and the covering component.

[0014] For example, the display module includes a polarizer, the polarizer is disposed close to the first outer surface, and the end of the first portion of the tape is adjacent to the polarizer.

[0015] For example, the side of the first portion of the tape facing the polarizer is closer to the side surface of the display module than the side of the main body facing the second space.

[0016] For example, a portion of the main body is also pressed on the polarizer.

[0017] For example, a side of the main body facing the second space is aligned with a side of the first portion of the tape facing the polarizer.

[0018] For example, a surface of the first portion of the adhesive tape facing the covering component is substantially flush with a surface of the polarizer facing the covering component.

[0019] For example, the pressing member is arranged in a ring shape between the covering member and the display module.

[0020] For example, the main body and the adhesive tape both include light shielding material.

[0021] For example, the main body portion includes a black rubber material.

[0022] For example, the display device also includes a first optical adhesive portion and a second optical adhesive portion, wherein the first space is closer to the side surface of the display module than the second space, the first optical adhesive portion is located in the first space to press on at least a portion of the first portion of the tape, and the second optical adhesive portion fills the second space.

[0023] For example, the first optical adhesive portion and the second optical adhesive portion both include water adhesive.

[0024] For example, the adhesive tape further includes a third portion attached to an edge of the second outer surface of the display module.

[0025] For example, the display device further includes a packaging adhesive, wherein the packaging adhesive is arranged in a ring shape between the covering component and the display module, and the packaging adhesive is closer to the side surface of the display module than the tape pressing component.

[0026] For example, the display module includes a backlight module, a display panel, a back frame and a middle frame, the backlight module is located in the accommodating space of the back frame, the display panel is carried on the middle frame, and the second outer surface is located on the side of the back frame away from the backlight module, the first outer surface is located on the side of the middle frame and the display panel away from the backlight module, and the side surface is located on the side wall of the middle frame away from the display panel.

[0027] For example, the covering component includes a transparent cover plate.

[0028] For example, the covering component includes a transparent cover plate and a touch substrate, and the touch substrate is attached to a surface of the transparent cover plate facing the display module.

[0029] According to another aspect, a method for manufacturing a display device is provided, comprising:

[0030] Assemble to form a display module, the display module comprising a first outer surface, a second outer surface and a side surface, the first outer surface and the second outer surface are arranged opposite to each other, the side surface connects the first outer surface and the second outer surface, and the first outer surface is located at the light emitting side of the display module;

[0031] Attaching adhesive tape at least on the edge of the first outer surface of the display module and the side surface of the display module;

[0032] Pressing a tape pressing member at least on an end of the tape attached to an edge of a first outer surface of the display module, the tape pressing member comprising a main body and at least one through hole formed in the main body; and

[0033] The covering member is fitted so that the main body is disposed between the covering member and the display module, so as to separate the space between the covering member and the display module into a first space and a second space, and the at least one through hole connects the first space with the second space.

[0034] In the embodiments of the present disclosure, by providing a pressing belt component, a better fitting effect can be achieved in the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention.

[0036] Figure 1 is a partial structural schematic diagram of a display device according to an embodiment of the present disclosure;

[0037] Figure 2 is a schematic structural diagram of an adhesive tape according to an embodiment of the present disclosure;

[0038] Figure 3 is a schematic structural diagram of an adhesive tape according to an embodiment of the present disclosure;

[0039] Figure 4 is a schematic diagram of a local structure schematically showing that the end of the tape is raised;

[0040] Figure 5A is a partial structural schematic diagram of a display device according to an embodiment of the present disclosure;

[0041] Figure 5B is a schematic diagram schematically showing a situation where total reflection occurs on bubbles formed inside the hydrogel;

[0042] Figure 6 A partial structural schematic diagram of a display device according to an embodiment of the present disclosure is shown;

[0043] Figure 7 is a schematic structural diagram of a belt pressing component included in a display device according to an embodiment of the present disclosure;

[0044] Figure 8A-8D A display device according to some exemplary embodiments of the present disclosure is Figure 6 An enlarged view of part 1 in FIG.

[0045] Fig. 9 is a plan view of a display device according to an embodiment of the present disclosure, which schematically shows the positional relationship of a tape pressing component, a first optical adhesive portion, a second optical adhesive portion, and a packaging adhesive included in the display device in the plan view;

[0046] Fig.10 yes Figure 7 A side view of the belt pressing component is shown;

[0047] Fig.11 is a partial structural schematic diagram of a display device according to an embodiment of the present disclosure; and

[0048] Fig.12 is a flow chart of a method for manufacturing a display device according to an embodiment of the present disclosure.

[0049] It should be noted that, for the sake of clarity, in the drawings used to describe the embodiments of the present invention, the sizes of layers, structures or regions may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0051] Unless otherwise defined, the technical terms or scientific terms used in this disclosure should be understood by ordinary technicians in the field. "First", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0052] In this document, unless otherwise specified, directional terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present disclosure, and do not indicate or imply that the device, element or component referred to must have a specific orientation, be constructed or operate in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms should not be understood as limiting the present disclosure.

[0053] The expressions "OCR glue" (also called water glue or optical liquid glue) and "OCA glue" in this article should be understood according to the usual meaning in the art. For example, "OCR glue" and "OCA glue" are both used as optical glue in the art. Usually, OCA glue is solid or semi-solid before curing, and its fluidity is poor, and it becomes solid after curing; OCR glue is liquid before curing, and its fluidity is good, and it becomes solid after curing.

[0054] Figure 1 is a partial structural diagram of a display device according to an embodiment of the present disclosure. For example, Figure 1 The display device shown in FIG. 1 may be a liquid crystal display device. Figure 1 The display device 1 may include a backlight module 2 , a display panel 4 such as a liquid crystal display panel, a back frame 5 and a middle frame 6 .

[0055] Specifically, the backlight module 2 may include a light source 21 and an optical film group. For example, the optical film group may include optical films such as a diffuser 23 and a brightness enhancement film 24. It should be understood that the optical film group may also include other types of optical films, and the types of optical films included in the optical film group may be selected according to actual use requirements. For example, the light source 21 may include a plurality of light emitting diodes (LEDs). For another example, the backlight module 2 may be an edge-entry backlight module, which may also include a light guide plate 22. Figure 1 As shown, the light source 21 can be arranged at a side surface of the light guide plate 22, and the side surface of the light guide plate is called the light incident surface of the light guide plate 22. The light emitted by the light source 21 is scattered by the light guide plate 22, emitted from the light exiting surface of the light guide plate 22, and then passes through the optical film group to form a surface light source.

[0056] Reference Figure 1 For example, the display panel 4 of the liquid crystal display panel may include two substrates arranged opposite to each other, for example, the two substrates may be an array substrate 41 and a color filter substrate 42. It should be understood that the display panel 4 may also include a liquid crystal layer arranged between the array substrate 41 and the color filter substrate 42. The substrates of the array substrate 41 and the color filter substrate 42 may be glass. In addition, it should be noted that the array substrate and the color filter substrate may adopt the structures of the array substrate and the color filter substrate commonly used in the art, which will not be described in detail here.

[0057] The display panel 4 may further include a lower polarizer 43 and an upper polarizer 45. Figure 1 In the illustrated embodiment, the lower polarizer 43 is disposed on the lower surface of the array substrate 41 , and the upper polarizer 45 is disposed on the upper surface of the color filter substrate 42 .

[0058] Reference Figure 1 The back frame 5 has a receiving space 52 for receiving the backlight module 2. The middle frame 6 is used to carry the display panel 4. For example, a buffer element 7 such as a buffer foam is provided between the carrying surface of the middle frame 6 and the lower polarizer 43 of the display panel 4. A portion of the middle frame 6 may be supported on the back frame 5. The back frame 5 may have a side wall. The side wall of the middle frame 6 is combined with the side wall of the back frame 5 by, for example, a snap connection, a threaded connection, or the like.

[0059] In this document, for the convenience of description, the component formed by assembling a backlight module and a display panel is called a display module. That is, the expression "display module" includes a backlight module, a display panel, and a frame that combines the backlight module and the display panel together. For example, the display module may include structures such as a backlight module 2, a display panel 4, a back frame 5, and a middle frame 6.

[0060] Reference Figure 1The display device 1 may further include an adhesive tape 8 for fixing the display panel 4, so as to attach the backlight module 2 and the display panel 4 together. The adhesive tape 8 may have an adhesive encapsulation structure, for example, the adhesive tape 8 is attached to the edge of the upper surface (also referred to as the first outer surface of the display module) S1 of the display module, the side surface S2 of the display module, and the edge of the lower surface (also referred to as the second outer surface of the display module) S3 of the display module. Specifically, the adhesive tape 8 may include a first portion 81, a second portion 82, and a third portion 83. The first portion 81 of the adhesive tape 8 is attached to the edge of the surface of the middle frame 6 on the side away from the display panel 4, the second portion 82 of the adhesive tape 8 is attached to the side wall of the middle frame 6, and the third portion 83 of the adhesive tape 8 is attached to the edge of the surface of the back frame 5 on the side away from the backlight module 2. The adhesive tape 8 is a continuously extending adhesive tape, that is, the first portion 81, the second portion 82, and the third portion 83 of the adhesive tape 8 are connected as a whole. Through the above-mentioned adhesive packaging structure, the adhesive tape 8 can fix the display panel, thereby bonding the backlight module 2 and the display panel 4 together.

[0061] Optionally, the tape 8 may be made of a light shielding material, for example, the tape 8 may be a black tape. The tape 8 is attached to the edge of the lower surface of the display module, the side wall of the display module, and the edge of the upper surface of the display module, and can shield the light of the entire non-display area of ​​the display device 1, thereby reducing or even avoiding the probability of light leakage of the display device.

[0062] Optionally, the adhesive tape 8 may be made of a conductive material, so that the adhesive tape 8 can play a role in static electricity release or static electricity shielding.

[0063] Figure 2 FIG. 2 shows a schematic diagram of the structure of an adhesive tape according to an embodiment of the present disclosure. Figure 2 The adhesive tape 8 may include an adhesive layer 84, an aluminum film layer 85 and a light shielding layer 86 stacked in sequence, wherein the adhesive layer 85 itself is conductive and the aluminum film layer 85 is mixed with black conductive particles.

[0064] Figure 3 FIG. 2 shows a schematic diagram of the structure of an adhesive tape according to an embodiment of the present disclosure. Figure 3 The adhesive tape 8 may include an adhesive layer 87 and a substrate layer 88 stacked in sequence, the adhesive layer 87 itself is conductive, the substrate layer 88 may be made of a light-shielding and conductive material, and the substrate layer 88 is attached to the non-display area of ​​the display module 30 through the adhesive layer 87. Optionally, the adhesive layer 87 itself may be conductive, and the substrate layer 88 may be non-conductive.

[0065] Return to reference Figure 1, when the display device 1 is displaying, the light generated by the backlight module 2 is emitted from the upper polarizer 45. In order to further prevent the light from being emitted from the non-display area on the light-emitting surface side of the display device 1, the end 8A of the tape 8 close to the upper polarizer 45 (i.e., the end 8A of the first part 81 of the tape 8) is adjacent to the upper polarizer 45. It should be noted that "the end 8A of the tape 8 close to the upper polarizer 45 (i.e., the end 8A of the first part 81 of the tape 8) is adjacent to the upper polarizer 45" here means: the side of the end 8A of the tape 8 can be separated from the side of the upper polarizer 45 close to the tape 8 by a small gap, or the side of the end 8A of the tape 8 can be in contact with the side of the upper polarizer 45 close to the tape 8, but the end 8A of the tape 8 is not overlapped on the upper polarizer 45 to prevent the tape 8 from affecting the light emitted from the display area of ​​the display device 1.

[0066] Continue to refer to Figure 1 The display device 1 may further include a covering component 9, an optical glue portion 10 and a packaging glue 11. For example, the covering component 9 may be a cover plate, that is, the covering component 9 may be a glass cover plate. For example, the optical glue portion 10 may be composed of a water glue (also called an optical liquid glue or an OCR glue). The packaging glue 11 is arranged in a ring shape between the outer peripheral area of ​​the upper polarizer 45 of the display panel 4 and the cover plate 9. The water glue 10 is filled in the space between the cover plate 9 and the upper polarizer 45 and surrounded by the packaging glue 11. In this way, the cover plate 9 can be fully attached to the display panel 4 by the water glue 10 and encapsulated by the packaging glue 11.

[0067] On the one hand, the inventors found that when the display device 1 is applied to a narrow-frame display device, the width of the non-display area of ​​the display device 1 becomes smaller. Figure 1 , the length a of the first portion 81 of the adhesive tape 8 attached to the edge of the surface of the middle frame 6 away from the display panel 4 becomes smaller. For example, in a narrow-frame display device used in a moving object such as a vehicle, the length a is generally less than 1.2 mm. At this time, the adhesive strength may be insufficient, resulting in the problem of the end 8A of the adhesive tape 8 being lifted up, such as Figure 4 See Figure 4 Since the end 8A of the tape 8 is tilted, the light generated by the backlight module 2 may not pass through the upper polarizer 45 but be emitted from the gap between the tape 8 and the tilted end 8A (e.g. Figure 4 As indicated by the arrowed line LS in the figure, edge light leakage or bright stripes (also known as cross-light phenomenon) may occur.

[0068] On the other hand, in order to avoid the cross-light phenomenon, the inventors tried to apply an optical adhesive 10 such as a water-based adhesive on the end 8A of the first portion 81 of the adhesive tape 8. Figure 5AAs shown, the end 8A of the tape 8 is pressed to prevent it from curling up. However, the inventors have found that if an optical glue 10 such as water glue is applied to the tape 8, it is easy to form a bright stripe at the position where the water glue 10 and the tape 8 overlap, that is, it is easy to produce a bright stripe phenomenon at the edge of the glue. The inventors have found through research that the reason for the bad bright stripe at the edge of the glue may be that there is a difference in the surface properties of the upper polarizer 45 and the tape 8, especially the surface of the tape 8 is rougher than the surface of the upper polarizer 45. Therefore, the water glue 10 applied to the tape 8 is easy to form bubbles 10P inside, refer to Figure 5B As a result, light (such as external light) will be reflected at the bubble 10P, and a large amount of reflection will cause the brightness of the part of the water glue 10 where the bubble is formed to be greater, that is, it is easy to form a bright strip at the position where the water glue 10 overlaps with the tape 8, that is, it is easy to produce a bright strip phenomenon at the edge of the glue. In addition, the inventors also found that in addition to the phenomenon of bright strips on the edge of the glue caused by external light directly irradiating the bubble 10P, possible reasons also include: external light or the outgoing light of the display panel enters the water glue between the upper polarizer and the cover plate, and part of the light is totally reflected at the upper and lower interfaces of the water glue and propagates to the glue edge. The total reflection is destroyed due to the presence of the bubble 10P, thereby exacerbating the bright strip defect on the edge of the glue.

[0069] In order to avoid both the above-mentioned cross-light phenomenon and the above-mentioned bright strip phenomenon of the glue edge, the embodiment of the present disclosure further proposes a display device including a tape pressing component. Figure 6 FIG. 1 is a schematic diagram showing a partial structure of a display device according to an embodiment of the present disclosure. Figure 6 The display device 10 may include a display module 30 , and the display module 30 may include a backlight module 20 , a display panel 40 such as a liquid crystal display panel, a back frame 50 and a middle frame 60 .

[0070] Specifically, the backlight module 20 may include a light source 201 and an optical film group. For example, the optical film group may include optical films such as a diffuser 203 and a brightness enhancement film 204. It should be understood that the optical film group may also include other types of optical films, and the type of optical films included in the optical film group may be selected according to actual use requirements. For example, the light source 201 may include a plurality of light emitting diodes (LEDs). For another example, the backlight module 20 may be an edge-entry backlight module, which may include a light guide plate 202. Figure 1 As shown, the light source 201 can be arranged at a side surface of the light guide plate 202, and the side surface of the light guide plate is called the light incident surface of the light guide plate 202. The light emitted by the light source 201 is scattered by the light guide plate 202, emitted from the light exiting surface of the light guide plate 202, and then passes through the optical film group to form a surface light source.

[0071] Reference Figure 6The display panel 40 may include two substrates arranged opposite to each other, for example, the two substrates may be an array substrate 401 and a color filter substrate 402. It should be understood that the display panel 40 may also include a liquid crystal layer arranged between the array substrate 401 and the color filter substrate 402. The substrates of the array substrate 401 and the color filter substrate 402 may be glass. In addition, it should be noted that the array substrate and the color filter substrate may adopt the structures of the array substrate and the color filter substrate commonly used in the art, which will not be described in detail here.

[0072] The display panel 40 may further include a lower polarizer 403 and an upper polarizer 405. Figure 6 In the illustrated embodiment, the lower polarizer 403 is disposed on the lower surface of the array substrate 401 , and the upper polarizer 405 is disposed on the upper surface of the color filter substrate 402 .

[0073] Reference Figure 6 The back frame 50 has a receiving space 502 for receiving the backlight module 20. The middle frame 60 is used to carry the display panel 40. For example, a buffer element 70 such as a buffer foam is provided between the carrying surface of the middle frame 60 and the lower polarizer 403 of the display panel 40.

[0074] In this way, Figure 6 As shown, the display module 30 may include an upper surface (also referred to as a first outer surface) S1, a side surface S2, and a lower surface (also referred to as a second outer surface) S3, wherein the lower surface S3 is arranged opposite to the upper surface S1, the side surface S2 connects the lower surface S3 and the upper surface S1, and the upper surface S1 is located on the light-emitting side of the display module. Specifically, the lower surface S3 is located on the side of the back frame 50 away from the backlight module 20, the upper surface S1 is located on the side of the middle frame 60 and the display panel 40 away from the backlight module 20, and the side surface S2 is located on the side wall of the middle frame 60 away from the display panel 40.

[0075] Reference Figure 6The display device 10 may further include an adhesive tape 80 for fixing the display panel 40, so as to attach the backlight module 20 and the display panel 40 together. The adhesive tape 80 may have an adhesive encapsulation structure, for example, the adhesive tape 80 is attached to the edge of the upper surface (also referred to as the first outer surface) S1 of the display module 30, the side surface S2 of the display module 30, and the edge of the lower surface (also referred to as the second outer surface) S3 of the display module 30. Specifically, the adhesive tape 80 may include a first portion 801, a second portion 802, and a third portion 803. The first portion 801 of the adhesive tape 80 is attached to the edge of the surface of the middle frame 60 on the side away from the display panel 40, the second portion 802 of the adhesive tape 80 is attached to the side wall of the middle frame 60, and the third portion 803 of the adhesive tape 80 is attached to the edge of the surface of the back frame 50 on the side away from the backlight module 20. The adhesive tape 80 is a continuously extending adhesive tape, that is, the first portion 801, the second portion 802 and the third portion 803 of the adhesive tape 80 are an integrated structure. Through the above-mentioned adhesive encapsulation structure, the adhesive tape 80 can fix the display panel 40, thereby bonding the backlight module 20 and the display panel 40 together.

[0076] Optionally, the tape 80 may be made of a light shielding material, for example, the tape 80 may be a black tape. The tape 80 is attached to the edge of the lower surface of the display module 30, the side surface of the display module 30, and the edge of the upper surface of the display module 30, and can shield the light of the entire non-display area of ​​the display device 10, thereby reducing or even avoiding the probability of light leakage of the display device.

[0077] Optionally, the tape 80 may be made of a conductive material, so that the tape 80 can play a role in static electricity release or static electricity shielding.

[0078] Return to reference Figure 2 The adhesive tape 80 may have the same structure as the adhesive tape 8, that is, it may include an adhesive layer 84, an aluminum film layer 85 and a light shielding layer 86 stacked in sequence, wherein the adhesive layer 84 itself is conductive and the aluminum film layer 85 is mixed with black conductive particles.

[0079] Return to reference Figure 3 The adhesive tape 80 may have the same structure as the adhesive tape 8, that is, it may include an adhesive layer 87 and a substrate layer 88 stacked in sequence, the adhesive layer 87 itself is conductive, the substrate layer 88 may be made of a light-shielding and conductive material, and the substrate layer 88 is attached to the non-display area of ​​the display module 30 through the adhesive layer 87. Optionally, the adhesive layer 87 itself may be conductive, and the substrate layer 88 may be non-conductive.

[0080] Reference Figure 6When the display device 10 is displaying, the light generated by the backlight module 20 is emitted from the upper polarizer 405. In order to further prevent the light from being emitted from the non-display area on the light emitting surface side of the display device 10, the end 80A of the tape 80 close to the upper polarizer 405 (i.e., the end 80A of the first portion 801 of the tape 80) is adjacent to the upper polarizer 405. It should be noted that “the end 80A of the tape 80 close to the upper polarizer 405 (i.e., the end 80A of the first part 801 of the tape 80) is adjacent to the upper polarizer 405” means here that: the side of the end 80A of the tape 80 can be separated from the side of the upper polarizer 405 close to the tape 80 by a small gap, or the side of the end 80A of the tape 80 can be in contact with the side of the upper polarizer 405 close to the tape 80, but the end 80A of the tape 80 is not overlapped on the upper polarizer 405 to prevent the tape 80 from affecting the light emitted from the display area of ​​the display device 10.

[0081] Continue to refer to Figure 6 The display device 10 may further include a covering member 90, a water glue 100 (also referred to as an optical liquid glue or OCR glue) and a packaging glue 110. For example, the covering member 90 may be a cover plate, specifically, a glass cover plate. The packaging glue 110 is arranged in a ring shape between the outer peripheral area of ​​the upper polarizer 405 of the liquid crystal display panel 40 and the cover plate 90. The water glue 100 is filled in the space between the cover plate 90 and the upper polarizer 405 and surrounded by the packaging glue 110. In this way, the cover plate 90 can be fully attached to the display panel 40 by the water glue 100 and encapsulated by the packaging glue 110.

[0082] like Figure 6 As shown, the cover component 90 and the display module 30 are arranged oppositely and at intervals. Here, "arranged oppositely and at intervals" means that the cover component 90 and the display module 30 are arranged oppositely and there is a certain interval between them. Specifically, the surface of the cover component 90 facing the display module 30 ( Figure 6 ) and the surface of the display module 30 facing the cover member 90 ( Figure 6 ) are arranged opposite to each other, and there is a certain interval between the two surfaces. For example, due to the provision of the packaging glue 110 and the optical glue such as the water glue 100 (which will be described in more detail below), the surface ( Figure 6 ) and the surface of the display module 30 facing the cover member 90 ( Figure 6 There is a certain gap between the upper surface shown in FIG.

[0083] Continue to refer to Figure 6 The display device 10 may further include a belt pressing component 120 . Figure 7is a schematic structural diagram of a belt pressing component included in a display device according to an embodiment of the present disclosure. Figure 6 and Figure 7 The tape pressing member 120 may include a main body 1201 and a through hole 1202. At least a portion of the main body 1201 is pressed on the tape 80. Figure 6 In the illustrated embodiment, at least a portion of the main body 1201 is pressed against the first portion 801 of the tape 80, more specifically, at least a portion of the main body 1201 is pressed against the end 80A of the first portion 801 of the tape 80, that is, the orthographic projection of the main body 1201 on the display panel 40 at least partially overlaps with the orthographic projection of the first portion 801 of the tape 80 on the display panel 40. In this way, by providing the tape pressing component 120, at least a portion of the main body 1201 is pressed against the first portion 801 of the tape 80, in particular, against the end 80A of the first portion 801 of the tape 80. The encapsulation adhesive 110 is closer to the side surface S2 of the display module 30 than the tape pressing component 120. In this way, referring to Figure 6 The main body 1201 is disposed between the cover plate 90 and the display module 30, and is at least pressed on the end 80A of the first portion 801 of the tape 80, so that the space between the cover plate 90 and the display module 30 is divided into a first space and a second space. Specifically, a first space CV1 is formed between the cover plate 90 and the first portion 801 of the tape 80, and a second space CV2 is formed between the cover plate 90 and the upper polarizer 405.

[0084] Fig. 8A A display device according to some exemplary embodiments of the present disclosure is Figure 6 Magnified view of part I in FIG. Fig. 8A , another part of the main body 1201 is also pressed on the upper polarizer 405, that is, the orthographic projection of the main body 1201 on the display panel 40 partially overlaps with the orthographic projection of the upper polarizer 405 on the display panel 40. More specifically, a small gap 80G is spaced between the side 80S of the first part 801 of the adhesive tape 80 close to the upper polarizer 405 and the side 405S of the upper polarizer 405 close to the adhesive tape 80, and the tape pressing component 120 spans the gap 80G, so that a part of its main body 1201 is pressed on the adhesive tape 80, and another part is pressed on the upper polarizer 405.

[0085] Figure 8B A display device according to some exemplary embodiments of the present disclosure is Figure 6 Magnified view of part I in FIG. Figure 8B, the main body 1201 is not pressed on the upper polarizer 405, that is, the orthographic projection of the main body 1201 on the display panel 40 does not overlap with the orthographic projection of the upper polarizer 405 on the display panel 40. More specifically, a small gap 80G is spaced between the side 80S of the first portion 801 of the adhesive tape 80 close to the upper polarizer 405 and the side 405S of the upper polarizer 405 close to the adhesive tape 80, and the tape pressing component 120 does not span the gap 80G. For example, the side 120S of the main body 1201 of the tape pressing component 120 facing the second space CV2 is aligned with the side 80S of the first portion 801 of the adhesive tape 80, as shown in FIG. Figure 8B Optionally, the belt pressing component 120 may cover a portion of the gap 80G, and the side 120S of the main body 1201 of the belt pressing component 120 facing the second space CV2 is closer to the upper polarizer 405 than the side 80S of the first part 801 of the adhesive tape 80, or the side 80S of the first part 801 of the adhesive tape 80 is closer to the side surface S2 of the display module 30 than the side 120S of the main body 1201 of the belt pressing component 120 facing the second space CV2.

[0086] Figure 8C A display device according to some other exemplary embodiments of the present disclosure is Figure 6 Magnified view of part I in FIG. Figure 8C , the side 80S of the first part 801 of the tape 80 contacts the side 405S of the upper polarizer 405 close to the tape 80, and a part of the main body 1201 of the tape pressing component 120 is pressed on the first part 801 of the tape 80, that is, the orthographic projection of the main body 1201 on the display panel 40 partially overlaps with the orthographic projection of the first part 801 of the tape 80 on the display panel 40; another part of the main body 1201 is also pressed on the upper polarizer 405, that is, the orthographic projection of the main body 1201 on the display panel 40 partially overlaps with the orthographic projection of the upper polarizer 405 on the display panel 40.

[0087] Fig.8D A display device according to some other exemplary embodiments of the present disclosure is Figure 6 Magnified view of part I in FIG. Fig.8D, the side 80S of the first part 801 of the adhesive tape 80 is in contact with the side 405S of the upper polarizer 405 close to the adhesive tape 80, and the main body 1201 of the tape pressing component 120 is completely pressed on the adhesive tape 80, that is, the orthographic projection of the main body 1201 of the tape pressing component 120 on the display panel 40 falls within the orthographic projection of the first part 801 of the adhesive tape 80 on the display panel 40. The main body 1201 is not pressed on the upper polarizer 405, that is, the orthographic projection of the main body 1201 on the display panel 40 does not overlap with the orthographic projection of the upper polarizer 405 on the display panel 40. In addition, the side 120S of the main body 1201 of the tape pressing component 120 facing the second space CV2 is aligned with the side 80S of the first part 801 of the adhesive tape 80.

[0088] In the embodiment of the present disclosure, the belt pressing component 120 at least presses or covers the end 80A of the first part 801 of the tape 80. More specifically, the orthographic projection of the side 80S of the first part 801 of the tape 80 close to the upper polarizer 405 on the display panel 40 falls within the orthographic projection of the main body 1201 of the belt pressing component 120 on the display panel 40.

[0089] In the embodiment of the present disclosure, in order to facilitate the setting of the tape pressing component 120, the surface of the first part 801 of the tape 80 facing the cover plate 90 (i.e., the upper surface of the first part 801 of the tape 80) is basically flush with the surface of the upper polarizer 405 facing the cover plate 90 (i.e., the upper surface of the upper polarizer 405), that is, the upper surface of the first part 801 of the tape 80 and the upper surface of the upper polarizer 405 are basically located at the same height.

[0090] It should be noted that the expression "substantially flush" used in this article includes the situation that multiple layers or multiple surfaces are completely flush, and also includes the situation that the height difference of multiple layers or multiple surfaces is within the allowable range of processing errors. For example, the surface of the first part 801 of the tape 80 facing the cover plate 90 and the surface of the upper polarizer 405 facing the cover plate 90 are basically flush, including: the surface of the first part 801 of the tape 80 facing the cover plate 90 and the surface of the upper polarizer 405 facing the cover plate 90 are completely flush, or there is a height difference between the surface of the first part 801 of the tape 80 facing the cover plate 90 and the surface of the upper polarizer 405 facing the cover plate 90, but the height difference is within the allowable range of processing errors.

[0091] Combined with reference Figure 6-Figure 8D The through hole 1202 of the tape pressing member 120 connects the first space CV1 and the second space CV2, thereby allowing a portion of the water glue 100 to enter the first space CV1 from the second space CV2 through the through hole 1202. In this way, a portion of the water glue 100 can be pressed on the first portion 801 of the tape 80. Figures 8A-8DTherefore, in the embodiment of the present disclosure, the tape pressing member 120 and a portion of the water glue 100 can press the end 80A of the tape 80, which can prevent the end 80A of the tape 80 from rising, thereby avoiding the cross-light phenomenon. Figure 6-Figure 8D The display device 10 includes a first optical adhesive portion 100A formed of an optical adhesive such as a water adhesive 100 and a second optical adhesive portion 100B formed of an optical adhesive such as the water adhesive 100. It should be understood that since the through hole 1202 of the belt pressing member 120 connects the first space CV1 and the second space CV2, allowing a portion of the water adhesive 100 to enter the first space CV1 from the second space CV2 through the through hole 1202, a portion of the water adhesive 100 that enters the first space CV1 through the through hole 1202 can form the first optical adhesive portion 100A in the first space CV1. The first space CV1 is closer to the side surface S2 of the display module 30 than the second space CV2. The first optical adhesive portion 100A is located in the first space CV1 to press on at least a portion of the first portion 801 of the adhesive tape 80. The second optical adhesive portion 100B fills the second space CV2, that is, the optical adhesive 100 fills the space between the cover plate 90 and the upper polarizer 405, so that the display module 30 and the cover plate are fully attached together. In addition, the first optical adhesive portion 100A pressed on at least a portion of the first portion 801 of the adhesive tape 80 also improves the viscosity of the first portion 801 of the adhesive tape 80, so that the adhesive tape 80 is better attached to the edge of the upper surface (also called the first outer surface) S1 of the display module 30.

[0092] Furthermore, the main body 1201 of the tape pressing member 120 is made of a light shielding material, for example, the main body 1201 can be made of a black rubber material, or the main body 1201 can be made of a silicone rubber prepared by adding black pigment, or the main body 1201 can be made of other light shielding materials with a certain elasticity. In this way, even if the water glue 100 applied to the tape 80 forms bubbles 100P inside, referring to Figures 8A-8D , causing light (such as external light) to be reflected at the bubble 10P (with reference to FIG5 ), a large amount of reflected light will be blocked by the main body 1201 of the pressing belt component 120, that is, a large amount of reflected light will not enter the visible area and be observed by the user, thus avoiding the phenomenon of bright strips on the edge of the rubber.

[0093] In the embodiment of the present disclosure, the belt pressing component 120 at least presses or covers the side 80S of the tape 80 facing the upper polarizer 405, so that the bubble 100P will only be generated on the outside of the belt pressing component 120, that is, the side away from the upper polarizer 405, thereby ensuring that the light reflected by the bubble 100P is blocked by the main body 1201 of the belt pressing component 120.

[0094] Fig. 91 is a plan view of a display device according to an embodiment of the present disclosure, which shows the positional relationship among the tape pressing member 120 , the first optical adhesive portion 100A, the second optical adhesive portion 100B and the packaging adhesive 110 in the plan view. Fig.10 yes Figure 7 A side view of the belt pressing component is shown. Figure 7-Figure 10 , the pressing member 120 includes an annular main body 1201, that is, the pressing member 120 is arranged in an annular shape around the outer circumference of the second optical adhesive part 100B. The thickness of the main body 1201 may be substantially equal to the spacing distance between the display module 30 and the cover plate 90, that is, the thickness d1 of the main body 1201 may be substantially equal to the thickness d2 of the second optical adhesive part 100B. It should be noted that "substantially equal to" here means that the thickness d1 of the main body 1201 may be equal to the thickness d2 of the second optical adhesive part 100B, or the thickness d1 of the main body 1201 may be less than the thickness d2 of the second optical adhesive part 100B, and the difference d2-d1 is less than or equal to 0.1 mm, for example, the difference d2-d1 may be in the range of 0.05-0.1 mm, or the difference d2-d1 may be 0.05 mm. In the embodiment of the present disclosure, the thickness d1 of the main body 1201 is set to be no greater than the thickness d2 of the second optical adhesive part 100B, which can avoid the generation of an air gap between the upper polarizer 405 and the cover plate 90. Moreover, considering the influence of processing accuracy, the thickness d1 of the main body 1201 is set to be substantially equal to the thickness d2 of the second optical adhesive part 100B, which is conducive to the manufacture of the tape pressing component. It should also be noted that the thickness d2 of the second optical adhesive part 100B can be determined according to the bonding process, for example, it can be 0.6-0.8mm, or 0.3-0.4mm.

[0095] The width w1 of the main body 1201 may be selected according to actual needs. For example, the width w1 of the main body 1201 may be about 1.5 mm.

[0096] It should be noted that the embodiment of the present disclosure does not impose any particular restriction on the shape of the cross section of the through hole 1202 of the belt pressing component 120. Fig.10In the illustrated embodiment, the cross-section of the through hole 1202 is circular. For another example, the diameter of the circular through hole 1202 may be above 0.1 mm to facilitate the processing of the through hole. There is no particular restriction on the number of through holes 1202 included in the belt pressing component 120, and the number of through holes 1202 may be determined based on the thickness d1 of the main body 1201. For example, when the thickness d1 of the main body 1201 is relatively small, for example, less than 0.4 mm, one through hole 1202 may be provided; when the thickness d1 of the main body 1201 is relatively large, for example, greater than 0.4 mm, more than two through holes 1202 may be provided. The embodiments of the present disclosure do not place any particular restriction on the spacing between the through holes 1202. For example, in Fig.10 In the illustrated embodiment, the distance L1 between the central axes of two adjacent through holes 1202 may be about 0.4 mm. When the display device includes more than two through holes 1202, each through hole 1202 connects the first space CV1 and the second space CV2.

[0097] For example, the belt pressing member 120 may be made of a black rubber material and through a molding process. However, the embodiments of the present disclosure are not limited thereto, and the belt pressing member 120 may be made of other suitable materials and through other suitable processing methods.

[0098] Fig.11 is a partial structural diagram of a display device according to an embodiment of the present disclosure. Fig.11 The display device 10 may include a display module 30, the display module 30 includes a backlight module 20, a display panel 40 such as a liquid crystal display panel, a back frame 50, a middle frame 60 and a buffer element 70. The display device 10 may also include an adhesive tape 80, a cover plate 90, a first optical adhesive portion 110A, a second optical adhesive portion 110B, a packaging adhesive 110, a tape pressing component 120 and a touch substrate 300, that is, the display device 10 may be a touch display device. It should be noted that Fig.11 The components and structure of the display device in the embodiment shown can refer to the above description for Figure 6-Figure 10 The components and structures of the display device in each embodiment are described, and the following will focus on describing the components and structures that are not described in the various embodiments described above.

[0099] like Fig.11As shown, the covering component includes a touch panel formed by laminating a touch substrate 300 and a cover plate 90. For example, the touch substrate 300 is arranged on the side of the upper polarizer 405 away from the display panel 40, and the packaging glue 110, the pressing component 120, the first optical glue part 110A, and the second optical glue part 110B are all arranged between the upper polarizer 405 and the touch substrate 300. The cover plate 90 (for example, a transparent cover plate 90) is arranged on the side of the touch substrate 300 away from the display panel 40, and the packaging glue 110' and the water glue 100' are arranged between the touch substrate 300 and the cover plate 90 for laminating the touch substrate 300 and the cover plate 90.

[0100] It should be understood that Fig.11 The display device in the embodiment shown can realize the above Figure 6-Figure 10 All the features and advantages of the display device in each of the described embodiments are not repeated here.

[0101] For example, the display device in each embodiment described above may be a vehicle-mounted display device applied to a moving object such as a car, or may be a display device such as a laptop computer. Of course, the embodiments of the present disclosure are not limited thereto, and for example, the display device may be any product or component with a display function, such as a smart phone, a wearable smart watch, smart glasses, a tablet computer, a television, a display, a digital photo frame, a navigator, a vehicle-mounted display, an e-book, or the like.

[0102] Fig.12 is a flow chart of a method for manufacturing a display device according to an embodiment of the present disclosure. Figure 6 and Fig.12 The manufacturing method of the display device can be performed according to the following steps. It should be noted that some steps of the manufacturing method can be performed individually or in combination, and can be performed in parallel or sequentially, and are not limited to Fig.12 The specific operation sequence shown.

[0103] In step S321 , the backlight module 20 is assembled. For example, components such as the light source 201 , the light guide plate 202 and the optical film assembly are assembled to form a complete backlight module 20 .

[0104] In step S322 , the display panel 40 is assembled. For example, the array substrate 401 and the color filter substrate 402 are aligned, and then the lower polarizer 403 and the upper polarizer 405 are attached to the array substrate 401 and the color filter substrate 402 respectively to form the display panel 40 .

[0105] In step S323 , the backlight module 20 and the back frame 50 are installed. For example, the backlight module 20 is installed in the receiving space 502 of the back frame 50 .

[0106] In step S324 , the display panel 40 and the middle frame 60 are mounted. For example, a buffer element 70 such as a buffer foam is disposed on the bearing surface of the middle frame 60 , and then the display panel 40 is placed on the buffer element 70 .

[0107] In step S325, the back frame 50 and the middle frame 60 are combined with the adhesive tape 80, so that the backlight module 20 and the display panel 40 are combined together. For example, the adhesive tape 80 may include a first portion 801, a second portion 802, and a third portion 803, the first portion 801 of the adhesive tape 80 is attached to the edge S1 of the surface of the middle frame 60 on the side away from the display panel 40, the second portion 802 of the adhesive tape 80 is attached to the side wall S2 of the middle frame 60, and the third portion 803 of the adhesive tape 80 is attached to the edge S3 of the surface of the back frame 50 on the side away from the backlight module 20.

[0108] In step S326 , the tape pressing member 120 is placed on the first portion 801 of the adhesive tape 80 to press the end portion 80A of the first portion 801 of the adhesive tape 80 .

[0109] In step S327, a covering component such as a cover plate 90 is attached to the structure obtained in step S326. For example, in this step, the packaging glue 110 is applied so as to be arranged in a ring shape on the peripheral area of ​​the upper polarizer 405 of the display panel 40; the water glue 100 is applied so as to cover the upper polarizer 405; the cover plate 90 is attached, and during the attaching process, the cover plate 90 is pressed down so that a part of the water glue 100 overflows onto the tape 80 through the through hole 1202 of the tape pressing component 120; and then the water glue 100 is cured.

[0110] For example, refer to Fig.11 and Fig.12 , the manufacturing method may further include the step of forming a touch substrate. In step S3265, the cover plate 90 and the touch substrate 300 are bonded. For example, in this step, the encapsulation glue 110' is applied so that it is arranged in a ring shape around the touch substrate 300; the water glue 100' is applied so that it covers the surface of the touch substrate 300 surrounded by the encapsulation glue 110'; the cover plate 90 is bonded, and during the bonding process, the cover plate 90 is pressed down so that the cover plate 90 and the touch substrate 300 are bonded together; and then the water glue 100' is cured to form a touch panel.

[0111] Accordingly, in step S327, the touch panel formed in step S3265 can be bonded to the structure obtained in step S326. For example, in this step, the encapsulation glue 110 is applied so as to be arranged in a ring shape on the peripheral area of ​​the upper polarizer 405 of the display panel 40; the water glue 100 is applied so as to cover the upper polarizer 405; the touch panel is bonded, and during the bonding process, the touch panel is pressed down so that a portion of the water glue 100 overflows onto the tape 80 through the through hole 1202 of the tape pressing component 120; and then the water glue 100 is cured.

[0112] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A display device, comprising: A display module, wherein the display module comprises a first outer surface, a second outer surface and a side surface, wherein the first outer surface and the second outer surface are arranged opposite to each other, the side surface connects the first outer surface and the second outer surface, and the first outer surface is located at a light emitting side of the display module; An adhesive tape, comprising: A first portion attached to an edge of a first outer surface of the display module; and A second portion attached to a side surface of the display module; a covering member, the covering member and the display module being arranged opposite to and spaced apart from each other; and A belt pressing component, the belt pressing component comprising: a main body portion, which is disposed between the cover member and the display module and is pressed at least on an end portion of the first portion of the tape, and divides a space between the cover member and the display module into a first space and a second space; and at least one through hole formed in the main body, the at least one through hole connecting the first space and the second space; The display device further includes a first optical adhesive portion and a second optical adhesive portion. The first space is closer to the side surface of the display module than the second space, the first optical adhesive portion is located in the first space to press on at least a portion of the first portion of the tape, and the second optical adhesive portion fills the second space.

2. The display device according to claim 1, wherein: The main body includes more than two through holes, and each of the through holes communicates with the first space and the second space.

3. The display device according to claim 1, wherein: The thickness of the main body is less than or equal to the spacing distance between the display module and the covering component.

4. The display device according to claim 1, wherein: The display module includes a polarizer, which is disposed close to the first outer surface, and an end of the first portion of the adhesive tape is adjacent to the polarizer.

5. The display device according to claim 4, wherein: The side of the first portion of the tape facing the polarizer is closer to the side surface of the display module than the side of the main body facing the second space.

6. The display device according to claim 5, wherein: A portion of the main body is also pressed against the polarizer.

7. The display device according to claim 4, wherein: A side surface of the main body facing the second space is aligned with a side surface of the first portion of the tape facing the polarizer.

8. The display device according to any one of claims 4 to 7, wherein: A surface of the first portion of the adhesive tape facing the covering component is substantially flush with a surface of the polarizer facing the covering component.

9. The display device according to any one of claims 1 to 7, wherein: The belt pressing member is arranged in a ring shape between the cover member and the display module.

10. The display device according to any one of claims 1 to 7, wherein: The main body and the adhesive tape both include light shielding material.

11. The display device according to any one of claims 1 to 7, wherein: The main body portion includes a black rubber material.

12. The display device according to claim 1, wherein: The first optical adhesive portion and the second optical adhesive portion both include water adhesive.

13. The display device according to any one of claims 1 to 7 and 12, wherein: The adhesive tape also includes a third portion attached to the edge of the second outer surface of the display module.

14. The display device according to any one of claims 1 to 7 and 12, further comprising a packaging adhesive, in, The packaging glue is arranged in a ring shape between the covering component and the display module, and the packaging glue is closer to the side surface of the display module than the tape pressing component.

15. The display device according to any one of claims 1 to 7 and 12, wherein: The display module includes a backlight module, a display panel, a back frame and a middle frame. The backlight module is located in the accommodating space of the back frame, and the display panel is carried on the middle frame. And wherein, the second outer surface is located on the side of the back frame away from the backlight module, the first outer surface is located on the side of the middle frame and the display panel away from the backlight module, and the side surface is located on the side wall of the middle frame away from the display panel.

16. The display device according to any one of claims 1 to 7 and 12, wherein: The covering component includes a transparent cover plate.

17. The display device according to any one of claims 1 to 7 and 12, wherein: The covering component includes a transparent cover plate and a touch substrate, and the touch substrate is attached to a surface of the transparent cover plate facing the display module.

18. A method for manufacturing a display device, comprising: Assemble to form a display module, the display module comprising a first outer surface, a second outer surface and a side surface, the first outer surface and the second outer surface are arranged opposite to each other, the side surface connects the first outer surface and the second outer surface, and the first outer surface is located at the light emitting side of the display module; Attaching adhesive tape at least on the edge of the first outer surface of the display module and the side surface of the display module; Pressing a tape pressing member at least on an end of the tape attached to an edge of a first outer surface of the display module, the tape pressing member comprising a main body and at least one through hole formed in the main body; and Fitting the cover member so that the main body is disposed between the cover member and the display module, so as to separate the space between the cover member and the display module into a first space and a second space, and so that the at least one through hole communicates the first space with the second space; The method also includes: forming a first optical adhesive portion and a second optical adhesive portion, wherein the first space is closer to the side surface of the display module than the second space, the first optical adhesive portion is located in the first space to press on at least a portion of the first portion of the tape, and the second optical adhesive portion fills the second space.

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