CN115394199B - Display device and preparation method thereof - Google Patents
Display device and preparation method thereof Download PDFInfo
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- CN115394199B CN115394199B CN202211064028.2A CN202211064028A CN115394199B CN 115394199 B CN115394199 B CN 115394199B CN 202211064028 A CN202211064028 A CN 202211064028A CN 115394199 B CN115394199 B CN 115394199B
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- adhesive layer
- optical adhesive
- display panel
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- ultrathin glass
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- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000012790 adhesive layer Substances 0.000 claims abstract description 186
- 230000003287 optical effect Effects 0.000 claims abstract description 170
- 239000011521 glass Substances 0.000 claims abstract description 139
- 230000001681 protective effect Effects 0.000 claims description 79
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000005491 wire drawing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
- G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application provides a display device and a preparation method thereof, wherein the display device comprises: a display panel; the first optical adhesive layer is arranged on one side of the display panel; the ultrathin glass is arranged on one side of the first optical adhesive layer, which is away from the display panel; the side of the first optical adhesive layer, which is away from the display panel, is provided with a groove, and the ultrathin glass is accommodated in the groove. According to the application, the groove is formed in the first optical adhesive layer, the ultrathin glass is accommodated in the groove, the condition that unstable adhesion is generated between the first optical adhesive layer and the ultrathin glass is eliminated, the ultrathin glass and the first optical adhesive layer form a combined integrated structure, the deformation resistance of the edge area of the first optical adhesive layer is greatly enhanced, the phenomenon of wiredrawing of the edge area of the ultrathin glass can be effectively avoided, the display stability of the display device is improved, and the display panel is ensured to have excellent display effect.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device and a preparation method thereof.
Background
The folding display device is a future technical development trend, the folding brings new development direction of the display industry, and the organic light emitting diode (Organic Light Emitting Diode, OLED for short) display device is focused at present and has unique bending and folding characteristics, so that the folding display device with various forms is prepared, is convenient to carry and store at home, and is widely focused on the market.
At present, ultra Thin Glass (UTG for short) with good flexibility and good optical effect is commonly used in folding display devices. At present, as shown in fig. 1, a typical structure of a folded display device including UTG is that UTG01 needs to be attached to a display panel 03 during the process of manufacturing the folded display device, and in order to ensure an attaching tolerance, an optical adhesive 02 (Optically Clear Adhesive, abbreviated as OCA) located under UTG needs to be designed into a structure with an edge retracted compared with UTG01, but because the OCA02 is softer, the area expands outwards due to being pressed during the attaching process, and unstable adhesion is generated between the optical adhesive 02 and UTG; after the lamination is completed, the OCA02 can rebound and shrink, a wiredrawing phenomenon is generated in the UTG01 edge area, and problems such as film peeling and bright line displaying are generated, so that the display stability and the display effect of the folding display device are affected, and the problem needs to be solved.
Disclosure of Invention
The application provides a display device and a preparation method thereof, which can effectively solve the problem of wiredrawing in the edge area of the existing ultrathin glass.
In one aspect, the present application provides a display device including: a display panel; the first optical adhesive layer is arranged on one side of the display panel; the ultrathin glass is arranged on one side of the first optical adhesive layer, which is away from the display panel; the side of the first optical adhesive layer, which is away from the display panel, is provided with a groove, and the ultrathin glass is accommodated in the groove.
Optionally, the groove includes a bottom wall and a side wall, the area of the ultra-thin glass is the same as the area of the bottom wall, and the ultra-thin glass contacts with the bottom wall and the side wall of the groove.
Optionally, the depth of the groove is greater than or equal to the thickness of the ultra-thin glass.
Optionally, an edge of the first optical adhesive layer is flush with an edge of the display panel.
Optionally, the display device further includes: the second optical adhesive layer is arranged on one side of the ultrathin glass, which is away from the display panel; wherein the edge of the second optical adhesive layer is flush with the edge of the first optical adhesive layer.
Optionally, the depth of the groove is greater than the thickness of the ultra-thin glass, wherein the second optical adhesive layer comprises a first portion and a second portion; the first part is arranged on one side of the ultrathin glass, which is away from the display panel, and is accommodated in the groove, has the same area as the ultrathin glass and is contacted with the side wall of the groove and the ultrathin glass; the second part is arranged on one side of the first part, which is away from the display panel, and the edge of the second part is flush with the edge of the first optical adhesive layer.
Optionally, the display device further includes: the protective window is arranged on one side of the second optical adhesive layer, which is away from the display panel; the first protective adhesive layer is arranged on one side of the protective window, which is away from the display panel; the first protective film is arranged on one side of the first protective adhesive layer, which is away from the display panel; the edge of the protective window, the edge of the first protective adhesive layer and the edge of the first protective film are all flush with the edge of the first optical adhesive layer.
Optionally, the display panel includes: a back plate; the display panel body is arranged on one side of the backboard; the first optical adhesive layer is arranged on one side of the display panel body, which is away from the backboard; the edge of the backboard, the edge of the display panel body and the edge of the first optical adhesive layer are flush.
Optionally, the display panel further includes: the polarizer is arranged on one side of the display panel body, which is away from the backboard, and the first optical adhesive layer is arranged on one side of the polarizer, which is away from the backboard; the support layer is arranged on one side of the backboard, which is away from the display panel body; the second protective adhesive layer is arranged on one side of the supporting layer, which is away from the display panel body; the second protective film is arranged on one side of the second protective adhesive layer, which is away from the display panel body; the edges of the polarizer, the edges of the supporting layer, the edges of the second protective adhesive layer and the edges of the second protective film are flush with the edges of the first optical adhesive layer.
In another aspect, the present application provides a method for manufacturing a display device, the method comprising the steps of:
providing a bearing plate, and forming ultrathin glass on the bearing plate;
coating a first optical adhesive layer on the ultrathin glass and on the periphery of the ultrathin glass, wherein the first optical adhesive layer is provided with a groove, and the ultrathin glass is accommodated in the groove;
forming a temporary protective film on one side of the ultrathin glass, which is away from the bearing plate;
providing a composite functional film, wherein the composite functional film comprises a second optical adhesive layer, a protective window, a first protective adhesive layer and a first protective film which are arranged in a laminated manner, removing the bearing plate, and attaching the surface of one side of the second optical adhesive layer, which is away from the first protective film, to the surface of one side of the ultrathin glass, which is away from the first optical adhesive layer;
and providing a display panel, removing the temporary protective film, and attaching the surface of one side of the first optical adhesive layer, which is away from the ultrathin glass, to the display panel.
The application relates to a display device and a preparation method thereof. According to the application, the groove is formed in the first optical adhesive layer, and the ultrathin glass is accommodated in the groove, so that a gap between the first optical adhesive layer and the ultrathin glass is eliminated, the condition that unstable adhesion is generated between the first optical adhesive layer and the ultrathin glass is eliminated, the phenomenon of wiredrawing in the edge area of the ultrathin glass can be effectively avoided, the risk of stripping the film layer in the display device and the probability of displaying bright lines are greatly reduced, and the display panel is ensured to have excellent display effect; and because ultra-thin glass holds in the recess to can make ultra-thin glass and first optical glue film form the integrative structure of combination, strengthened the anti deformability in the marginal zone of first optical glue film greatly, further improved display device's display stability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a display panel and ultra-thin glass in the prior art;
fig. 2 is a schematic structural diagram of a display device according to a first embodiment of the present application;
fig. 3 is a schematic flow chart of a method for manufacturing a display device according to an embodiment of the present application;
FIG. 4a is a schematic diagram of a structure of forming ultra-thin glass on a carrier plate according to an embodiment of the application;
FIG. 4b is a schematic structural diagram of a first optical adhesive layer formed on an ultrathin glass and around the ultrathin glass according to the embodiment of the application;
fig. 4c is a schematic structural diagram of forming a temporary protective film on a side of the ultra-thin glass facing away from the carrier plate according to an embodiment of the present application;
fig. 4d is a schematic structural diagram of the ultrathin glass and the composite functional film attached after the carrier plate is removed according to the first embodiment of the application;
fig. 4e is a schematic structural diagram of attaching the first optical adhesive layer and the display panel after removing the temporary protective film according to the first embodiment of the present application;
fig. 5 is a schematic structural diagram of a display device according to a second embodiment of the present application;
fig. 6a is a schematic structural diagram of forming ultrathin glass on a carrier plate according to a second embodiment of the application;
fig. 6b is a schematic structural diagram of forming a first optical adhesive layer on the ultra-thin glass and at the periphery of the ultra-thin glass according to the second embodiment of the present application;
fig. 6c is a schematic structural diagram of forming a temporary protective film on a side of the ultrathin glass facing away from the carrier plate according to the second embodiment of the application;
fig. 6d is a schematic structural diagram of the ultrathin glass and the composite functional film attached after the carrier plate is removed in the second embodiment of the application;
fig. 6e is a schematic structural diagram of attaching the first optical adhesive layer to the display panel after removing the temporary protective film according to the second embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials. The following detailed description is given, respectively, to the description of the following embodiments, but the description of the embodiments is not to be taken as limiting the preferred embodiments.
Example 1
Fig. 2 is a schematic structural diagram of a display device according to an embodiment of the application. Referring to fig. 2, a first embodiment of the present application provides a display device, including: a display panel 20; a first optical adhesive layer 11 disposed on one side of the display panel 20; the ultrathin glass 12 is arranged on one side of the first optical adhesive layer 11, which is away from the display panel 20; the first optical adhesive layer 11 has a groove 10 at a side facing away from the display panel 20, and the ultra-thin glass 12 is accommodated in the groove 10.
According to the application, the groove 10 is formed in the first optical adhesive layer 11, and the ultrathin glass 12 is accommodated in the groove 10, so that a gap between the first optical adhesive layer 11 and the ultrathin glass 12 is eliminated, and the condition that unstable adhesion is generated between the first optical adhesive layer 11 and the ultrathin glass 12 is eliminated, so that the phenomenon of wiredrawing in the edge area of the ultrathin glass 12 can be effectively avoided, the risk of film peeling in a display device and the probability of occurrence of bright line display are greatly reduced, and the display panel 20 is ensured to have excellent display effect; in addition, the ultrathin glass 12 is accommodated in the groove 10, so that the ultrathin glass 12 and the first optical adhesive layer 11 form a combined integrated structure, the deformation resistance of the edge area of the first optical adhesive layer 11 is greatly enhanced, and the display stability of the display device is further improved.
Specifically, the display device is a foldable OLED display device, the display panel 20 is a flexible display panel, the material of the first optical adhesive layer 11 is OCA, the thickness of the first optical adhesive layer 11 is 60-150 micrometers, and the thickness of the ultra-thin glass 12 is 30-50 micrometers.
Further, in some embodiments of the present application, the groove 10 includes a bottom wall and a side wall, the ultra-thin glass 12 and the bottom wall have the same area, and the ultra-thin glass 12 contacts the bottom wall and the side wall of the groove 10.
In the display device provided by the application, because the areas of the ultrathin glass 12 and the bottom wall are the same, the ultrathin glass 12 is contacted with the bottom wall and the side wall of the groove 10, so that the combination of the ultrathin glass 12 and the first optical adhesive layer 11 can be more compact, and the display stability of the display device can be further improved.
Further, in some embodiments of the present application, the depth of the groove 10 is equal to the thickness of the ultra-thin glass 12.
In the display device provided by the application, the surface of the side, facing away from the display panel 20, of the first optical adhesive layer 11 is flush with the surface of the side, facing away from the display panel 20, of the ultra-thin glass 12, so that a flattened surface is formed on the side, facing away from the display panel 20, of the combined integrated structure formed by the first optical adhesive layer 11 and the ultra-thin glass 12, and therefore, the subsequent process difficulty is lower when other film structures are formed on the surface of the side, facing away from the display panel 20, of the combined integrated structure, and the production and manufacturing cost is reduced.
Further, in some embodiments of the present application, the edge of the first optical adhesive layer 11 is flush with the edge of the display panel 20.
In the prior art, compared with UTG, the optical cement positioned under UTG is shrunk inwards, so that a gap is generated between the edge area of UTG and the optical cement, and the gap provides a containing space for particles generated in the cutting process, thereby easily causing the problems of poor display and the like; in the display device provided by the application, the groove 10 for accommodating the ultrathin glass 12 is formed in the first optical adhesive layer 11, so that the edge of the ultrathin glass 12 is effectively wrapped by the first optical adhesive layer 11, the risk of poor display caused by particles generated in the cutting process is eliminated, the display panel 20 and the first optical adhesive layer 11 can be integrally cut, and the structural design that the edge of the first optical adhesive layer 11 and the edge of the display panel 20 are flush is realized.
Further, in some embodiments of the present application, the display device further includes: the second optical adhesive layer 13 is disposed on a side of the ultrathin glass 12 facing away from the display panel 20; wherein the edge of the second optical adhesive layer 13 is flush with the edge of the first optical adhesive layer 11.
In the display device provided by the application, since the edge of the second optical adhesive layer 13 is flush with the edge of the first optical adhesive layer 11, the orthographic projection of the second optical adhesive layer 13 on the display panel 20 covers the orthographic projections of the first optical adhesive layer 11 and the ultrathin glass 12 on the display panel 20. That is, the second optical adhesive layer 13 can be fixedly connected with the first optical adhesive layer 11 while being attached to the ultra-thin glass 12, so that the assembly stability of the display panel 20 is greatly improved. In addition, the arrangement of the second optical adhesive layer 13 does not affect the integral cutting of the display panel 20 and the first optical adhesive layer 11, so that the integral cutting of the display panel 20, the first optical adhesive layer 11 and the second optical adhesive layer 13 can be realized, and the production and manufacturing cost is reduced.
Further, in some embodiments of the present application, the display device further includes: a protective Window 14 (PW) disposed on a side of the second optical adhesive layer 13 facing away from the display panel 20; the first protective adhesive layer 15 is disposed on a side of the protective window 14 facing away from the display panel 20; the first protective film 16 is disposed on a side of the first protective adhesive layer 15 facing away from the display panel 20; wherein, the edge of the protective window 14, the edge of the first protective adhesive layer 15, and the edge of the first protective film 16 are all flush with the edge of the first optical adhesive layer 11.
In the display device provided by the application, the arrangement of the protective window 14, the first protective adhesive layer 15 and the first protective film 16 does not affect the integral cutting of the display panel 20 and the first optical adhesive layer 11, so that the display panel 20, the first optical adhesive layer 11, the second optical adhesive layer 13, the protective window 14, the first protective adhesive layer 15 and the first protective film 16 can realize integral cutting, thereby further reducing the production and manufacturing cost.
Further, the display panel 20 includes: a back plate 22; a display panel body 21 disposed on one side of the back plate 22; wherein the first optical adhesive layer 11 is disposed on a side of the display panel body 21 facing away from the back plate 22; the edges of the back plate 22, the edges of the display panel body 21 and the edges of the first optical adhesive layer 11 are flush.
In the display device provided by the application, the display panel 20 and the first optical adhesive layer 11 can be subjected to an integral cutting process, so that the edges of the back plate 22, the display panel body 21 and the first optical adhesive layer 11 are flush.
Further, in some embodiments of the present application, the display panel 20 further includes: the polarizer 23 is arranged on one side of the display panel body 21, which is away from the back plate 22, and the first optical adhesive layer 11 is arranged on one side of the polarizer 23, which is away from the back plate 22; a supporting layer 24 disposed on a side of the back plate 22 facing away from the display panel body 21; the second protective adhesive layer 25 is disposed on a side of the supporting layer 24 away from the display panel body 21; the second protective film 26 is disposed on a side of the second protective adhesive layer 25 facing away from the display panel body 21; wherein the edges of the polarizer 23, the support layer 24, the second protective adhesive layer 25, and the second protective film 26 are flush with the edges of the first optical adhesive layer 11.
In the display device provided by the application, the display panel 20 and the first optical adhesive layer 11 can be subjected to an integral cutting process, so that the edge of the polarizer 23, the edge of the supporting layer 24, the edge of the second protective adhesive layer 25 and the edge of the second protective film 26 are flush with the edge of the first optical adhesive layer 11.
On the other hand, the application also provides a preparation method of the display device. Fig. 3 is a schematic flow chart of a method for manufacturing a display device according to an embodiment of the present application, and with reference to fig. 2 and fig. 3, the method for manufacturing a display device includes step S01, step S02, step S03, and step S04.
Fig. 4a is a schematic structural diagram of forming ultrathin glass on a carrier plate according to an embodiment of the application. Referring to fig. 4a, the step S01 is: a carrier plate 100 is provided, and an ultra-thin glass 12 is formed on the carrier plate 100, wherein a surface of a side of the carrier plate 100 facing the ultra-thin glass 12 is a flat surface.
Fig. 4b is a schematic structural diagram of forming a first optical adhesive layer on the ultra-thin glass and at the periphery of the ultra-thin glass according to the first embodiment of the present application. Referring to fig. 4b, the step S02 is: a first optical adhesive layer 11 is coated on the ultrathin glass 12 and on the periphery of the ultrathin glass 12, the first optical adhesive layer 11 is provided with a groove 10, the ultrathin glass 12 is accommodated in the groove 10, and the depth of the groove 10 is equal to the thickness of the ultrathin glass 12.
Fig. 4c is a schematic structural diagram of forming a temporary protective film on a side of the ultra-thin glass facing away from the carrier plate according to an embodiment of the present application. Referring to fig. 4c, the step S03 is: a temporary protective film 17 is formed on the side of the ultra-thin glass 12 facing away from the carrier plate 100.
Fig. 4d is a schematic structural diagram of the ultrathin glass and the composite functional film attached after the carrier plate is removed according to the first embodiment of the application. Referring to fig. 4d, the step S04 is: providing a composite functional film A, wherein the composite functional film A comprises a second optical adhesive layer 13, a protective window 14, a first protective adhesive layer 15 and a first protective film 16 which are stacked, the bearing plate 100 is removed, and the surface of one side of the second optical adhesive layer 13, which is away from the first protective film 16, is attached to the surface of one side of the ultrathin glass 12, which is away from the first optical adhesive layer 11.
Fig. 4e is a schematic structural diagram of attaching the first optical adhesive layer to the display panel after removing the temporary protective film according to the first embodiment of the present application. Referring to fig. 4e, the step S05 is: and providing a display panel 20, removing the temporary protective film 17, and attaching the surface of the side, facing away from the ultrathin glass 12, of the first optical adhesive layer 11 to the display panel 20.
Example two
Fig. 5 is a schematic structural diagram of a display device according to a second embodiment of the application. Referring to fig. 5, a second embodiment of the present application provides a display device, including: a display panel 20; a first optical adhesive layer 11 disposed on one side of the display panel 20; the ultrathin glass 12 is arranged on one side of the first optical adhesive layer 11, which is away from the display panel 20; the first optical adhesive layer 11 has a groove 10 at a side facing away from the display panel 20, and the ultra-thin glass 12 is accommodated in the groove 10.
According to the application, the groove 10 is formed in the first optical adhesive layer 11, and the ultrathin glass 12 is accommodated in the groove 10, so that a gap between the first optical adhesive layer 11 and the ultrathin glass 12 is eliminated, and the condition that unstable adhesion is generated between the first optical adhesive layer 11 and the ultrathin glass 12 is eliminated, so that the phenomenon of wiredrawing in the edge area of the ultrathin glass 12 can be effectively avoided, the risk of film peeling in a display device and the probability of occurrence of bright line display are greatly reduced, and the display panel 20 is ensured to have excellent display effect; in addition, the ultrathin glass 12 is accommodated in the groove 10, so that the ultrathin glass 12 and the first optical adhesive layer 11 form a combined integrated structure, the deformation resistance of the edge area of the first optical adhesive layer 11 is greatly enhanced, and the display stability of the display device is further improved.
The structure of the display device provided in the second embodiment of the present application is similar to that of the first embodiment, and the same portions are not repeated herein, except that the depth of the groove 10 is greater than the thickness of the ultra-thin glass 12, and the second optical adhesive layer 13 includes a first portion 131 and a second portion 132; the first portion 131 is disposed on a side of the ultra-thin glass 12 facing away from the display panel 20, and the first portion 131 is accommodated in the groove 10, has the same area as the ultra-thin glass 12, and contacts with the side wall of the groove 10 and the ultra-thin glass 12; the second portion 132 is disposed on a side of the first portion 131 facing away from the display panel 20, and an edge of the second portion 132 is flush with an edge of the first optical adhesive layer 11.
In the display device provided by the application, the first part 131 is attached to the ultrathin glass 12; the second portion 132 is attached to the first optical adhesive layer 11 and is fixedly connected, and a side of the second portion 132 facing away from the display panel 20 has a planarized surface. Since the edge of the second portion 132 is flush with the edge of the first optical cement layer 11, the front projection of the second portion 132 onto the display panel 20 covers the front projection of the first optical cement layer 11 and the ultra-thin glass 12 onto the display panel 20. The second optical adhesive layer 13 formed by the first portion 131 and the second portion 132 can be attached to the ultra-thin glass 12 and simultaneously can be fixedly connected with the first optical adhesive layer 11, so that the assembly stability of the display panel 20 is greatly improved. In addition, the arrangement of the second optical adhesive layer 13 does not affect the integral cutting of the display panel 20 and the first optical adhesive layer 11, so that the integral cutting of the display panel 20, the first optical adhesive layer 11 and the second optical adhesive layer 13 can be realized, and the production and manufacturing cost is reduced.
In addition, since the first portion 131 of the second optical adhesive layer 13 is embedded in the groove 10 of the first optical adhesive layer 11, the second optical adhesive layer 13 can be attached to the side wall of the groove 10, so that the contact area between the second optical adhesive layer 13 and the first optical adhesive layer 11 is increased, and the assembly stability of the display panel 20 is further improved.
Further, the materials of the first optical adhesive layer 11 and the second optical adhesive layer 13 are the same, and the elastic modulus of the second optical adhesive layer 13 is 30 to 50KPa. The elastic modulus of the conventional OCA in the prior art is 150-300 KPa, and the second optical adhesive layer 13 is formed by selecting a material with a smaller elastic modulus, so that the second optical adhesive layer 13 can be better filled into the groove 10 in the forming process, so that the second optical adhesive layer 13 is fully contacted with the side wall of the first optical adhesive layer 11, and the combination of the first optical adhesive layer 11, the ultrathin glass 12 and the second optical adhesive layer 13 is more stable.
On the other hand, the application also provides a preparation method of the display device. Fig. 5 is a schematic structural diagram of a display device according to a second embodiment of the present application, and, with reference to fig. 5 and 3, the method for manufacturing the display device includes step S01, step S02, step S03, and step S04.
Fig. 6a is a schematic structural diagram of forming ultrathin glass on a carrier plate according to a second embodiment of the application. Referring to fig. 6a, the step S01 is: a carrier plate 100 is provided, and an ultra-thin glass 12 is formed on the carrier plate 100, wherein a surface of a side of the carrier plate 100 facing the ultra-thin glass 12 is a step surface.
Fig. 6b is a schematic structural diagram of forming a first optical adhesive layer on the ultra-thin glass and at the periphery of the ultra-thin glass according to the second embodiment of the present application. Referring to fig. 6b, the step S02 is: a first optical adhesive layer 11 is coated on the ultrathin glass 12 and on the periphery of the ultrathin glass 12, the first optical adhesive layer 11 is provided with a groove 10, the ultrathin glass 12 is accommodated in the groove 10, and the depth of the groove 10 is larger than the thickness of the ultrathin glass 12.
Fig. 6c is a schematic structural diagram of forming a temporary protective film on a side of the ultrathin glass facing away from the carrier plate according to the second embodiment of the application. Referring to fig. 6c, the step S03 is: a temporary protective film 17 is formed on the side of the ultra-thin glass 12 facing away from the carrier plate 100.
Fig. 6d is a schematic structural diagram of the ultrathin glass and the composite functional film attached after the carrier plate is removed according to the second embodiment of the application. Referring to fig. 6d, the step S04 is: providing a composite functional film A, wherein the composite functional film A comprises a second optical adhesive layer 13, a protective window 14, a first protective adhesive layer 15 and a first protective film 16 which are stacked, the bearing plate 100 is removed, and the surface of one side of the second optical adhesive layer 13, which is away from the first protective film 16, is attached to the surface of one side of the ultrathin glass 12, which is away from the first optical adhesive layer 11. Wherein the second optical adhesive layer 13 comprises a first portion 131 and a second portion 132; the first portion 131 is disposed on a side of the ultra-thin glass 12 facing away from the display panel 20, and the first portion 131 is accommodated in the groove 10, has the same area as the ultra-thin glass 12, and contacts with the side wall of the groove 10 and the ultra-thin glass 12; the second portion 132 is disposed on a side of the first portion 131 facing away from the display panel 20, and an edge of the second portion 132 is flush with an edge of the first optical adhesive layer 11.
Fig. 6e is a schematic structural diagram of attaching the first optical adhesive layer to the display panel after removing the temporary protective film according to the second embodiment of the present application. Referring to fig. 6e, the step S05 is: and providing a display panel 20, removing the temporary protective film 17, and attaching the surface of the side, facing away from the ultrathin glass 12, of the first optical adhesive layer 11 to the display panel 20.
In summary, the present application provides a display device and a method for manufacturing the same, the display device includes: a display panel; the first optical adhesive layer is arranged on one side of the display panel; the ultrathin glass is arranged on one side of the first optical adhesive layer, which is away from the display panel; the side of the first optical adhesive layer, which is away from the display panel, is provided with a groove, and the ultrathin glass is accommodated in the groove. According to the application, the groove is formed in the first optical adhesive layer, the ultrathin glass is accommodated in the groove, the condition that unstable adhesion is generated between the first optical adhesive layer and the ultrathin glass is eliminated, the ultrathin glass and the first optical adhesive layer form a combined integrated structure, the deformation resistance of the edge area of the first optical adhesive layer is greatly enhanced, the wire drawing phenomenon of the edge area of the ultrathin glass can be effectively avoided, the display stability of the display device is greatly improved, and the excellent display effect of the display panel is ensured.
The foregoing has described in detail a display device and a method for manufacturing the same, according to embodiments of the present application, wherein specific examples are employed to illustrate the principles and embodiments of the present application, and the above examples are only used to help understand the method and core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (8)
1. A display device, characterized in that the display device comprises:
a display panel;
the first optical adhesive layer is arranged on one side of the display panel;
the ultrathin glass is arranged on one side of the first optical adhesive layer, which is away from the display panel;
the surface of one side of the first optical adhesive layer, which is away from the ultrathin glass, is attached to the display panel, and the depth of the groove is larger than the thickness of the ultrathin glass;
the display device further includes: the second optical adhesive layer is arranged on one side of the first optical adhesive layer and the ultrathin glass, which is away from the display panel, and comprises a first part and a second part; the first part is arranged on one side of the ultrathin glass, which is away from the display panel, and is accommodated in the groove, has the same area as the ultrathin glass and is contacted with the side wall of the groove and the ultrathin glass; the second part is arranged on one side of the first part, which is away from the display panel, and the second part is respectively in direct contact with the first part and the first optical adhesive layer.
2. The display device according to claim 1, wherein the recess includes a bottom wall and a side wall, the ultra-thin glass and the bottom wall have the same area, and the ultra-thin glass is in contact with the bottom wall and the side wall of the recess.
3. The display device of claim 2, wherein an edge of the first optical adhesive layer is flush with an edge of the display panel.
4. A display device according to claim 3, wherein the display device further comprises:
the second optical adhesive layer is arranged on one side of the ultrathin glass, which is away from the display panel;
wherein the edge of the second optical adhesive layer is flush with the edge of the first optical adhesive layer.
5. The display device according to claim 4, wherein the display device further comprises:
the protective window is arranged on one side of the second optical adhesive layer, which is away from the display panel;
the first protective adhesive layer is arranged on one side of the protective window, which is away from the display panel;
the first protective film is arranged on one side of the first protective adhesive layer, which is away from the display panel;
the edge of the protective window, the edge of the first protective adhesive layer and the edge of the first protective film are all flush with the edge of the first optical adhesive layer.
6. The display device according to claim 1, wherein the display panel includes:
a back plate;
the display panel body is arranged on one side of the backboard;
the first optical adhesive layer is arranged on one side of the display panel body, which is away from the backboard; the edge of the backboard, the edge of the display panel body and the edge of the first optical adhesive layer are flush.
7. The display device according to claim 6, wherein the display panel further comprises:
the polarizer is arranged on one side of the display panel body, which is away from the backboard, and the first optical adhesive layer is arranged on one side of the polarizer, which is away from the backboard;
the support layer is arranged on one side of the backboard, which is away from the display panel body;
the second protective adhesive layer is arranged on one side of the supporting layer, which is away from the display panel body;
the second protective film is arranged on one side of the second protective adhesive layer, which is away from the display panel body;
the edges of the polarizer, the edges of the supporting layer, the edges of the second protective adhesive layer and the edges of the second protective film are flush with the edges of the first optical adhesive layer.
8. A method of manufacturing a display device, comprising the steps of:
providing a bearing plate, and forming ultrathin glass on the bearing plate;
coating a first optical adhesive layer on the ultrathin glass and on the periphery of the ultrathin glass, wherein the first optical adhesive layer is provided with a groove, and the ultrathin glass is accommodated in the groove;
forming a temporary protective film on one side of the ultrathin glass, which is away from the bearing plate;
providing a composite functional film, wherein the composite functional film comprises a second optical adhesive layer, a protective window, a first protective adhesive layer and a first protective film which are arranged in a laminated manner, removing the bearing plate, and attaching the surface of one side of the second optical adhesive layer, which is away from the first protective film, to the surface of one side of the ultrathin glass, which is away from the first optical adhesive layer;
providing a display panel, removing the temporary protective film, and attaching the surface of one side of the first optical adhesive layer, which is away from the ultrathin glass, to the display panel;
the first optical adhesive layer is attached to the display panel, and the depth of the groove is larger than the thickness of the ultrathin glass;
the second optical adhesive layer is arranged on one side of the first optical adhesive layer and the ultrathin glass, which is away from the display panel, and comprises a first part and a second part; the first part is arranged on one side of the ultrathin glass, which is away from the display panel, and is accommodated in the groove, has the same area as the ultrathin glass and is contacted with the side wall of the groove and the ultrathin glass; the second part is arranged on one side of the first part, which is away from the display panel, and the second part is respectively in direct contact with the first part and the first optical adhesive layer.
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