CN114187830A - Flexible display panel - Google Patents
Flexible display panel Download PDFInfo
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- CN114187830A CN114187830A CN202111372229.4A CN202111372229A CN114187830A CN 114187830 A CN114187830 A CN 114187830A CN 202111372229 A CN202111372229 A CN 202111372229A CN 114187830 A CN114187830 A CN 114187830A
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- display panel
- flexible display
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- adhesive layer
- protective layer
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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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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The present invention provides a flexible display panel, comprising: displaying the film layer; the protective layer is arranged on the outermost layer of the flexible display panel and used for protecting the flexible display panel; the adhesive layer is arranged between the protective layer and the display film layer and is adhered to the protective layer, the adhesive layer is converted into a second state from a first state through reprocessing, and the viscosity of the adhesive layer in the second state is smaller than that of the adhesive layer in the first state. Through the one side bonding one deck adhesive linkage that is close to the demonstration rete at the protective layer in flexible display panel, utilize the characteristic that bonding property weakens after handling of this adhesive linkage, receive the destruction back when flexible display panel's protective layer, carry out corresponding reprocessing to flexible display panel, reduce in the flexible display panel protective layer and show the viscidity between the rete, thereby make protective layer and adhesive linkage easily tear from showing the rete, and do not damage the demonstration rete, the repair rate of flexible display panel has been improved, the repair cost of flexible display panel has been reduced.
Description
Technical Field
The application relates to the field of display, in particular to a flexible display panel.
Background
In the existing flexible display technology, in order to protect the surface of the flexible display panel from being damaged by an external force, a protective layer is usually prepared on the outer surface of the flexible display panel, so as to increase the mechanical strength of the surface of the flexible display panel.
However, during the use process, the flexible display panel inevitably falls, scratches and the like, so that the protective layer on the surface of the flexible display panel is damaged. When the protective layer is damaged, the protective layer is usually removed by a professional for processing, but the display film layer in the flexible display panel is very easy to be damaged when the protective layer is removed due to the fact that the thickness of the display film layer is relatively thin, the repair rate of the flexible display panel is reduced, and the repair cost of the flexible display panel is increased.
Disclosure of Invention
The invention provides a display panel, which aims to improve the repair rate of a flexible display panel and reduce the repair cost of the flexible display panel.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the present invention provides a flexible display panel, comprising:
displaying the film layer;
the protective layer is arranged on the outermost layer of the flexible display panel and used for protecting the flexible display panel;
the adhesive layer is arranged between the protective layer and the display film layer and is adhered to the protective layer, the adhesive layer is converted into a second state from a first state through reprocessing, and the viscosity of the adhesive layer in the second state is smaller than that of the adhesive layer in the first state.
Optionally, in some embodiments of the present invention, the peel force of the adhesive layer in the first state ranges from 1200-3000 gf per foot, and the peel force of the adhesive layer in the second state is less than or equal to 300 gf per foot.
Optionally, in some embodiments of the invention, the adhesive layer has a modulus in the range of 10 kpa to 100 kpa.
Optionally, in some embodiments of the present invention, a thickness of the adhesive layer is smaller than a thickness of the protective layer.
Optionally, in some embodiments of the present invention, the thickness of the adhesive layer is less than 30 μm.
Optionally, in some embodiments of the invention, the reprocessing includes any one of ultraviolet irradiation, thermal treatment, or cooling treatment.
Optionally, in some embodiments of the present invention, a material of the adhesive layer includes an acrylate-based ultraviolet photosensitive resin or a temperature sensitive resin.
Optionally, in some embodiments of the present invention, the display panel further includes a flexible cover substrate, and the flexible cover substrate is disposed between the adhesive layer and the display film layer.
Optionally, in some embodiments of the present invention, a total thickness of the adhesive layer and the protective layer is less than a thickness of the flexible cover substrate.
Optionally, in some embodiments of the present invention, the flexible display panel further includes a connection layer, the connection layer is disposed between the flexible cover substrate and the display film layer, and the connection layer is maintained in a third state through the reprocessing.
The present invention provides a flexible display panel, comprising: displaying the film layer; the protective layer is arranged on the outermost layer of the flexible display panel and used for protecting the flexible display panel; the adhesive layer is arranged between the protective layer and the display film layer and is adhered to the protective layer, the adhesive layer is converted into a second state from a first state through reprocessing, and the viscosity of the adhesive layer in the second state is smaller than that of the adhesive layer in the first state. Through the one side bonding one deck adhesive linkage that is close to the demonstration rete at the protective layer in flexible display panel, utilize the characteristic that bonding property weakens after handling of this adhesive linkage, receive the destruction back when flexible display panel's protective layer, carry out corresponding reprocessing to flexible display panel, reduce in the flexible display panel protective layer and show the viscidity between the rete, thereby make protective layer and adhesive linkage easily tear from showing the rete, and do not damage the demonstration rete, the repair rate of flexible display panel has been improved, the repair cost of flexible display panel has been reduced.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second flexible display panel according to an embodiment of the present invention.
Detailed Description
While the embodiments and/or examples of the present invention will be described in detail and fully with reference to the specific embodiments thereof, it should be understood that the embodiments and/or examples described below are only a part of the embodiments and/or examples of the present invention and are not intended to limit the scope of the invention. All other embodiments and/or examples, which can be obtained by a person skilled in the art without making any inventive step, based on the embodiments and/or examples of the present invention, belong to the scope of protection of the present invention.
Directional terms used in the present invention, such as [ upper ], [ lower ], [ left ], [ right ], [ front ], [ rear ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terminology is used for the purpose of describing and understanding the invention and is in no way limiting. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
Aiming at the problems of low repair rate and high repair cost of the conventional flexible display panel, the invention provides the flexible display panel which can solve the problems.
In an embodiment, please refer to fig. 1 and fig. 2, in which fig. 1 shows a first structural diagram of a flexible display panel provided in an embodiment of the present invention, and fig. 2 shows a second structural diagram of the flexible display panel provided in the embodiment of the present invention. As shown in fig. 1 and 2, a flexible display panel 10 according to an embodiment of the present invention includes:
a display film layer 11;
a protective layer 12 disposed on an outermost layer of the flexible display panel 10 for protecting the flexible display panel 10;
and an adhesive layer 13 which is provided between the protective layer 12 and the display film layer 11 and is adhered to the protective layer 12, wherein the adhesive layer 13 is changed from the first state to the second state by reprocessing, and the viscosity of the adhesive layer 13 in the second state is smaller than the viscosity of the adhesive layer 13 in the first state.
According to the embodiment of the invention, the bonding layer is bonded on one side of the protective layer in the flexible display panel, which is close to the display film layer, and the property that the bonding layer can be converted from a first state with higher viscosity to a second state with lower viscosity through reprocessing is utilized, when the protective layer of the flexible display panel is damaged, the flexible display panel is reprocessed, and the viscosity of the bonding layer is reduced, so that the protective layer and the bonding layer are easy to tear off from the flexible display panel, the display film layer in the flexible display panel is not damaged, the repair rate of the flexible display panel is improved, and the repair cost of the flexible display panel is reduced.
Specifically, in an embodiment, as shown in fig. 1, the display panel 10 provided in this embodiment includes a display film layer 11, a connection layer 15, a flexible cover substrate 14, an adhesive layer 13, and a protective layer 12, which are sequentially stacked.
The display film layer 11 is a functional film layer used by the flexible display panel 10 for displaying, and includes but is not limited to various film layer structures of the array substrate and various functional structures of the light emitting display layer. Reference may be made specifically to display film layers of flexible display panels known to those skilled in the art, and such reference is not intended to be limiting nor overly descriptive.
And a flexible cover substrate 14 disposed outside the display film layer 11. The flexible cover substrate 14 is usually a transparent organic thin film structure, and the material of the flexible cover substrate 14 includes organic materials such as polyethylene terephthalate and transparent polyimide, which have good stability and flexible mechanical properties, and can well meet the requirements of the flexible display panel 10 on bending and folding and optics. The thickness of the flexible cover substrate 14 is typically in the range of 30-70 microns.
And the protective layer 12 is arranged on one side of the flexible cover substrate 14 far away from the display film layer 11 and is used for protecting the flexible cover substrate 14 and the display film layer 11. Although the flexible cover substrate 14 has good flexibility, the flexible cover substrate 14 is merely used as a protective cover for the display panel, and the rigidity and strength are far from sufficient. Therefore, the protective layer 12 is provided on the outer side of the flexible cover substrate 14, on one hand, the protective layer 12 is used for isolating external water, oxygen, impurity particles, and the like from entering the flexible display panel 10 and protecting the flexible display panel 10 from chemical erosion, and on the other hand, the protective layer 12 protects the flexible display panel 10 from external force damage while not affecting the bending performance of the flexible display panel 10 by using its high hardness and good mechanical strength such as impact resistance. The protective layer 12 may be an inorganic transparent substrate such as glass, or an organic or inorganic composite hard substrate made of a polymer material having good impact resistance and light transmittance, and the composite material includes, but is not limited to, polyimide, polymethyl methacrylate, polycarbonate, cyclic olefin polymer, polyethylene terephthalate, polycarbonate, polyaramide, silicon oxide, silicon nitride, fluoropolymer, and the like. The thickness of the protective layer 12 is smaller than that of the flexible cover substrate 14, the thickness of the protective layer 12 is typically in the range of 3-40 μm, and the specific thickness can be designed according to the material and thickness of the flexible cover substrate 14 and the material of the protective layer 12.
And an adhesive layer 13 provided between the protective layer 12 and the flexible cover substrate 14, wherein the protective layer 12 is adhered to an upper surface of the adhesive layer 13, and the flexible cover substrate 14 is adhered to a lower surface of the adhesive layer 13, as shown in fig. 1.
When the flexible display panel 10 is in a normal use state, the adhesive layer 13 is in the first state, and the adhesive layer 13 is used for adhering the protective layer 12 and the flexible cover substrate 14, which is required to have good adhesion performance, and at the same time, the mechanical performance and the bending performance of the flexible display panel 10 cannot be affected. In the first state, the peel force of the adhesive layer 13 ranges from 1200-3000 grams-force per foot, and the modulus of the adhesive layer 13 ranges from 10 kpa to 100 kpa. The thickness of the adhesive layer 13 is smaller than that of the protective layer 12, the total thickness of the adhesive layer 13 and the protective layer 12 is smaller than that of the flexible cover substrate 14, the thickness of the adhesive layer 13 is smaller than 30 micrometers, and the specific thickness of the adhesive layer 13 can be designed according to the material and the thickness of the protective layer 12 and the material of the adhesive layer 13.
When the protective layer 12 of the flexible display panel 10 is damaged, the flexible display panel 10 is reprocessed, the adhesive layer 13 is changed from the first state to the second state, and after the reprocessing, the viscosity of the adhesive layer 13 is reduced, so that the adhesive force between the adhesive layer 13 and the flexible cover substrate 14 is reduced, and the protective layer 12 and the adhesive layer 13 can be conveniently removed from the flexible cover substrate 14. In the second state, the peel force of the adhesive layer 13 is less than or equal to 300 grams force per foot. The material of the bonding layer 13 can be acrylate photosensitive resin, and the corresponding reprocessing mode is ultraviolet irradiation; the material of the bonding layer 13 can be thermal resin, and the corresponding retreatment mode is heating treatment; the material of the bonding layer 13 can be cold-sensitive resin, and the corresponding retreatment mode is cooling treatment; the material of the adhesive layer 13 may also be other optical glue materials whose viscosity can be reduced by corresponding reprocessing.
And a connection layer 15 disposed between the flexible cover substrate 14 and the display film layer 11 for connecting the flexible cover substrate 14 and the display film layer 11, as shown in fig. 1, an upper surface of the connection layer 15 is connected to the flexible cover substrate 14, and a lower surface of the connection layer 15 is connected to the display film layer 11. The connection layer 15 is an optical glue layer having good adhesive properties. When the flexible display panel 10 is in a normal use state, the connection layer 15 is in a third state; when the protective layer 12 of the flexible display panel 10 is damaged and the flexible display panel 10 is reprocessed, the connection layer 15 continues to maintain the third state.
In the embodiment, the bonding layer is arranged between the hard protective layer and the flexible cover plate substrate, and the characteristic that the bonding performance of the bonding layer is weakened after treatment is utilized, when the protective layer of the flexible display panel is damaged, the flexible display panel is correspondingly retreated, so that the viscosity between the bonding layer in the flexible display panel and the flexible cover plate substrate is reduced, the protective layer and the bonding layer are easy to tear off from the flexible cover plate substrate, the display film layer in the flexible display panel is not damaged, the repair rate of the flexible display panel is improved, and the repair cost of the flexible display panel is reduced; meanwhile, the flexible cover plate substrate is reserved to be recycled, and the repair cost of the flexible display panel is further reduced.
In another embodiment, as shown in fig. 2, the display panel 10 provided in this embodiment includes a display film layer 11, an adhesive layer 13, and a protective layer 12, which are stacked.
The protective layer 12 is a composite film structure, and is specifically formed by coating a material with a thickness of several tens of micrometers and strong mechanical properties on both sides of a plastic film such as polyethylene terephthalate, polyimide and the like, so that the protective layer of the composite film structure has good heat resistance and mechanical properties.
The adhesive layer 13 is similar to the adhesive layer 13 in the flexible display panel 10 shown in fig. 1, and has various properties and advantages similar to those of the adhesive layer 13 in the foregoing embodiment, and specific reference is made to the foregoing embodiment, which is not repeated herein.
This embodiment is through setting up the adhesive linkage between protective layer and demonstration rete, utilize this adhesive linkage to weaken through handling the characteristic of back adhesive property, receive the destruction back when flexible display panel's protective layer, carry out corresponding reprocessing to flexible display panel, reduce the viscidity between protective layer and the demonstration rete in the flexible display panel, thereby make protective layer and adhesive linkage easily tear from showing the rete and remove, and do not damage the demonstration rete, the repair rate of flexible display panel has been improved, the repair cost of flexible display panel has been reduced.
In summary, an embodiment of the present invention provides a flexible display panel, which includes: displaying the film layer; the protective layer is arranged on the outermost layer of the flexible display panel and used for protecting the flexible display panel; the adhesive layer is arranged between the protective layer and the display film layer and is adhered to the protective layer, the adhesive layer is converted into a second state from a first state through reprocessing, and the viscosity of the adhesive layer in the second state is smaller than that of the adhesive layer in the first state. Through the one side bonding one deck adhesive linkage that is close to the demonstration rete at the protective layer in flexible display panel, utilize the characteristic that bonding property weakens after handling of this adhesive linkage, receive the destruction back when flexible display panel's protective layer, carry out corresponding reprocessing to flexible display panel, reduce in the flexible display panel protective layer and show the viscidity between the rete, thereby make protective layer and adhesive linkage easily tear from showing the rete, and do not damage the demonstration rete, the repair rate of flexible display panel has been improved, the repair cost of flexible display panel has been reduced.
The flexible display panel provided by the embodiment of the present invention is described in detail above, and the principle and the embodiment of the present invention are explained herein by applying a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A flexible display panel, comprising:
displaying the film layer;
the protective layer is arranged on the outermost layer of the flexible display panel and used for protecting the flexible display panel;
the adhesive layer is arranged between the protective layer and the display film layer and is adhered to the protective layer, the adhesive layer is converted into a second state from a first state through reprocessing, and the viscosity of the adhesive layer in the second state is smaller than that of the adhesive layer in the first state.
2. The flexible display panel of claim 1, wherein the peel force of the adhesive layer in the first state is in a range of 1200-3000 grams force per foot, and wherein the peel force of the adhesive layer in the second state is less than or equal to 300 grams force per foot.
3. The flexible display panel of claim 1, wherein the adhesive layer has a modulus in the range of 10 kpa to 100 kpa.
4. The flexible display panel of claim 1, wherein the adhesive layer has a thickness less than a thickness of the protective layer.
5. The flexible display panel of claim 4, wherein the adhesive layer has a thickness of less than 30 microns.
6. The flexible display panel of claim 1, wherein the reprocessing includes any one of ultraviolet irradiation, thermal treatment, or cooling treatment.
7. The flexible display panel according to claim 1, wherein a material of the adhesive layer comprises an acrylate based photosensitive resin or a temperature sensitive resin.
8. The flexible display panel of claim 1, wherein the display panel further comprises a flexible cover substrate disposed between the adhesive layer and the display film layer.
9. The flexible display panel of claim 8, wherein a total thickness of the adhesive layer and the protective layer is less than a thickness of the flexible cover substrate.
10. The flexible display panel of claim 8, wherein the flexible display panel further comprises a connection layer disposed between the flexible cover substrate and the display film layer, the connection layer remaining in a third state through the reprocessing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372229.4A CN114187830A (en) | 2021-11-18 | 2021-11-18 | Flexible display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372229.4A CN114187830A (en) | 2021-11-18 | 2021-11-18 | Flexible display panel |
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| Publication Number | Publication Date |
|---|---|
| CN114187830A true CN114187830A (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111372229.4A Pending CN114187830A (en) | 2021-11-18 | 2021-11-18 | Flexible display panel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109679512A (en) * | 2018-12-18 | 2019-04-26 | 武汉华星光电半导体显示技术有限公司 | For the OCA optical cement of display device and the disassembling method of display device |
| CN112055822A (en) * | 2018-05-10 | 2020-12-08 | 应用材料公司 | Replaceable cover lens for flexible displays |
| WO2021003740A1 (en) * | 2019-07-11 | 2021-01-14 | 深圳市柔宇科技有限公司 | Flexible cover plate, flexible display screen, and display panel |
| CN113035065A (en) * | 2021-03-05 | 2021-06-25 | 京东方科技集团股份有限公司 | Cover plate and display device |
| CN113643614A (en) * | 2021-08-12 | 2021-11-12 | 京东方科技集团股份有限公司 | Flexible display cover plate assembly, manufacturing method thereof, display panel and display device |
-
2021
- 2021-11-18 CN CN202111372229.4A patent/CN114187830A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055822A (en) * | 2018-05-10 | 2020-12-08 | 应用材料公司 | Replaceable cover lens for flexible displays |
| CN109679512A (en) * | 2018-12-18 | 2019-04-26 | 武汉华星光电半导体显示技术有限公司 | For the OCA optical cement of display device and the disassembling method of display device |
| WO2021003740A1 (en) * | 2019-07-11 | 2021-01-14 | 深圳市柔宇科技有限公司 | Flexible cover plate, flexible display screen, and display panel |
| CN113035065A (en) * | 2021-03-05 | 2021-06-25 | 京东方科技集团股份有限公司 | Cover plate and display device |
| CN113643614A (en) * | 2021-08-12 | 2021-11-12 | 京东方科技集团股份有限公司 | Flexible display cover plate assembly, manufacturing method thereof, display panel and display device |
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