CN115346437B - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN115346437B CN115346437B CN202210927767.3A CN202210927767A CN115346437B CN 115346437 B CN115346437 B CN 115346437B CN 202210927767 A CN202210927767 A CN 202210927767A CN 115346437 B CN115346437 B CN 115346437B
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention discloses a display module and a display device; the display module comprises a display panel and a protective layer, wherein the protective layer is positioned on the light emitting side of the display panel and comprises a first layer, a second layer and a thermal decomposition layer positioned between the first layer and the second layer; according to the invention, the protective layer is arranged to comprise two layers and the thermal decomposition layer positioned between the two layers, when the outer surface of the protective layer needs to be replaced, the thermal decomposition layer is decomposed by utilizing laser, so that the outer protective film layer is conveniently stripped and removed, the maintenance and replacement process is convenient, and the maintenance and replacement cost of the display module is reduced.
Description
Technical Field
The invention relates to the field of display, in particular to a display module and a display device.
Background
In recent years, service life and maintenance cost of the display module are more and more paid attention to by consumers, at present, the outer surface of the display module is generally provided with a cover plate layer, in order to adapt to a foldable application scene, optical cement is generally not contained in the cover plate layer, a coating process is needed to form a protective layer, when the protective layer is scratched or even damaged, the replacement and maintenance difficulty is high, even the whole display module can be replaced, the maintenance and replacement cost of the display module is high, and the replacement process is complex.
Therefore, a display module and a display device are needed to solve the above-mentioned problems.
Disclosure of Invention
The invention provides a display module and a display device, which can solve the technical problems of high maintenance and replacement cost and complex replacement process of the existing protective layer.
The invention provides a display module, comprising:
a display panel;
the protective layer is positioned on the light emitting side of the display panel;
the protective layer comprises a first layer, a second layer and a thermal decomposition layer positioned between the first layer and the second layer.
Further preferably, the material of the thermal decomposition layer is the same as the material of the first layer, or the material of the thermal decomposition layer is the same as the material of the second layer.
Further preferably, the material of the thermal decomposition layer is the same as that of the first layer, and the first layer is located between the display panel and the second layer; the first layer has an absorptivity of greater than or equal to 30% for light in a first wavelength range, and the second layer has an absorptivity of greater than 30% for light in a second wavelength range; wherein the first wavelength range includes a third wavelength range, the third wavelength range being outside the second wavelength range.
Further preferably, the third wavelength range is greater than or equal to 20nm.
Further preferably, the first layer has an absorbance of light in the third wavelength range of 90% or more and the second layer has an absorbance of light in the third wavelength range of less than 10%.
Further preferably, the material of the thermal decomposition layer is the same as that of the first layer, the first layer being located between the display panel and the second layer, the first layer including polyimide, the second layer including polyimide; wherein the polyimide in the second layer comprises an ester group or/and a silicon group.
Further preferably, the material of the thermal decomposition layer is the same as that of the first layer, the first layer is located between the display panel and the second layer, the first layer includes polyimide, and the second layer includes siloxane or/and epoxy.
Further preferably, the thickness of the thermal decomposition layer is smaller than the thickness of the first layer, and the thickness of the thermal decomposition layer is smaller than the thickness of the second layer.
Further preferably, the display module includes a central region and an edge region surrounding the central region, and the thermal decomposition layer is located in the edge region.
The invention also provides a display device which comprises the display module and the device main body, wherein the display module and the device main body are combined into a whole.
The invention has the beneficial effects that: according to the invention, the protective layer is arranged to comprise two layers and the thermal decomposition layer positioned between the two layers, when the outer surface of the protective layer needs to be replaced, the thermal decomposition layer is decomposed by utilizing laser, so that the outer protective film layer is conveniently stripped and removed, the maintenance and replacement process is convenient, and the maintenance and replacement cost of the display module is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a first structure of a display module according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second structure of a display module according to an embodiment of the invention;
fig. 3 is a schematic diagram of a third structure of a display module according to an embodiment of the invention;
fig. 4 is a schematic diagram of a fourth structure of a display module according to an embodiment of the invention;
FIG. 5 is a flowchart illustrating steps of a method for manufacturing a display module according to an embodiment of the present invention;
fig. 6A to 6B are schematic diagrams of a first process of a method for manufacturing a display module according to an embodiment of the invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. 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 invention. In the present invention, 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.
In recent years, service life and maintenance cost of the display module are more and more paid attention to by consumers, at present, the outer surface of the display module is generally provided with a cover plate layer, in order to adapt to a foldable application scene, optical cement is generally not contained in the cover plate layer, a coating process is needed to form a protective layer, when the protective layer is scratched or even damaged, the replacement and maintenance difficulty is high, even the whole display module can be replaced, the maintenance and replacement cost of the display module is high, and the replacement process is complex.
Referring to fig. 1 to 4, a display module 100 according to an embodiment of the invention includes:
a display panel 200;
a protective layer 300 located at the light emitting side of the display panel 200;
wherein the protective layer 300 includes a first layer 310, a second layer 320, and a thermal decomposition layer 330 between the first layer 310 and the second layer 320.
According to the invention, the protective layer is arranged to comprise two layers and the thermal decomposition layer positioned between the two layers, when the outer surface of the protective layer needs to be replaced, the thermal decomposition layer is decomposed by utilizing laser, so that the outer protective film layer is conveniently stripped and removed, the maintenance and replacement process is convenient, and the maintenance and replacement cost of the display module is reduced.
The technical scheme of the present invention will now be described with reference to specific embodiments.
In some embodiments, referring to fig. 1, the first layer 310 is disposed between the second layer 320 and the display panel 200, where the second layer 320 has a hardness greater than that of the first layer 310, and the second layer 320 is used as a scratch-resistant film layer, and a higher hardness is required to improve scratch resistance, and the first layer 310 has a lower hardness to balance the flexibility of the protective layer 300 and to assist in repairing and replacing the protective layer 300.
In some embodiments, referring to fig. 3, the material of the thermal decomposition layer 330 is the same as the material of the first layer 310, or the material of the thermal decomposition layer 330 is the same as the material of the second layer 320.
The thermal decomposition layer 330 may be integrally provided with the first layer 310, or the thermal decomposition layer 330 may be integrally provided with the second layer 320, and the first layer 310 may be decomposed by laser heating to peel off the second layer 320; or decomposing the second layer 320 by laser heating; the second layer 320 is then reformed to replace the protective layer 300.
In some embodiments, the first layer 310 is positioned between the display panel 200 and the second layer 320, the first layer 310 has an absorbance of greater than or equal to 30% for light in a first wavelength range, the second layer 320 has an absorbance of greater than 30% for light in a second wavelength range, and the thermally decomposed layer 330 has an absorbance of greater than or equal to 30% for light in a third wavelength range; wherein the third wavelength range is outside the first wavelength range and the third wavelength range is outside the second wavelength range.
Different materials have different light absorptivity for different wavelength ranges, and laser irradiation of special wave bands can be independently performed on the thermal decomposition layer 330 to accelerate the decomposition of the thermal decomposition layer 330, so that the outer protective film layer is stripped and removed, the maintenance and replacement process is simple, and the maintenance and replacement cost of the display module 100 is reduced.
In some embodiments, the first layer 310 is positioned between the display panel 200 and the second layer 320, the first layer 310 has an absorbance of greater than or equal to 30% for light in a first wavelength range, the second layer 320 has an absorbance of greater than 30% for light in a second wavelength range, and the thermally decomposed layer 330 has an absorbance of greater than or equal to 30% for light in a third wavelength range; wherein the first wavelength range includes a third wavelength range, the third wavelength range being outside the second wavelength range.
The light absorptivity of the thermal decomposition layer 330 near the first layer 310 can be enhanced to increase the temperature of the first layer 310, which is favorable for decomposing the thermal decomposition layer 330, thereby facilitating the stripping and removal of the second layer 320, simplifying the maintenance and replacement process, and reducing the maintenance and replacement cost of the display module 100.
In some embodiments, the material of the thermal decomposition layer 330 is the same as the material of the first layer 310, the first layer 310 being located between the display panel 200 and the second layer 320; the first layer 310 has an absorbance of greater than or equal to 30% for light in a first wavelength range, and the second layer 320 has an absorbance of greater than 30% for light in a second wavelength range; wherein a third wavelength range is located within the first wavelength range, the third wavelength being located outside the second wavelength range.
When the first layer 310 is decomposed by laser irradiation, the first layer 310 needs to have an optical absorptivity of 30% or more in the first wavelength range, and the second layer 320 can be prevented from absorbing laser light by the third wavelength range, so that laser energy is absorbed by the first layer 310 in a concentrated manner to enhance the decomposition of the first layer 310, and the second layer 320 is peeled off; or decomposing the second layer 320 by laser heating; the second layer 320 is then reformed to replace the protective layer 300.
In some embodiments, the third wavelength range is greater than or equal to 20nm.
For example, the second wavelength range is within the first wavelength range, and the third wavelength range is the difference set of the first wavelength range and the second wavelength range; for example, the first wavelength range and the second wavelength range do not overlap, and the third wavelength range is a wavelength interval between the first wavelength range and the second wavelength range. When the wavelength of the laser is within the third wavelength range, the third wavelength range is not too narrow, so as to reduce the difficulty of concentration of the wavelength of the laser, the first layer 310 has strong absorption to the laser, and the second layer 320 has weaker absorption to the laser, so that the first layer 310 is thermally decomposed, which is favorable for stripping and removing the second layer 320 away from the side of the display panel 200, and the maintenance and replacement cost of the display module 100 is reduced by a simple maintenance and replacement process.
In some embodiments, the first layer 310 has an absorbance of greater than or equal to 90% for light in the third wavelength range and the second layer 320 has an absorbance of less than 10% for light in the third wavelength range.
Preferably, the protection layer 300 is irradiated with laser light in a third wavelength range, the light absorptivity of the first layer 310 in the third wavelength range is greater than or equal to 90%, the light absorptivity of the second layer 320 in the third wavelength range is less than 10%, and the absorptivity of the first layer 310 is far greater than the absorptivity of the second layer 320, so that the thermal decomposition rate of the first layer 310 is improved, the stripping and removal of the second layer 320 away from the side of the display panel 200 are facilitated, the repair and replacement process is simplified, and the maintenance and replacement cost of the display module 100 is reduced.
In some embodiments, referring to fig. 3, the material of the thermal decomposition layer 330 is the same as the material of the first layer 310, the first layer 310 is located between the display panel 200 and the second layer 320, the first layer 310 includes polyimide, and the second layer 320 includes polyimide; wherein the polyimide in the second layer 320 comprises ester groups and/or silicon groups.
The main materials of the first layer 310 and the second layer 320 may be polyimide, and the second layer 320 is used as the peripheral protection layer 300, and a film layer with higher hardness and good anti-friction performance is required, so that the polyimide is grafted with an ester group or/and a silicon group, so that the hardness of the second layer 320 is improved to provide better protection effect; meanwhile, the ester group or/and the silicon group is grafted in the polyimide, so that the absorption rate of the polyimide to ultraviolet light can be reduced, the range of a difference set between a second wavelength range and a first wavelength range is enlarged, or the wavelength interval between the first wavelength range and the second wavelength range is enlarged, the width of a third wavelength range is enlarged, the difficulty in concentration of the laser wavelength is reduced, the first layer 310 has strong absorption to the laser, the second layer 320 has weaker absorption to the laser, and therefore the first layer 310 is subjected to thermal decomposition, stripping and removal of the second layer 320 away from one side of the display panel 200 are facilitated, the maintenance and replacement process is simplified, and the maintenance and replacement cost of the display module 100 is reduced.
In some embodiments, referring to fig. 3, the material of the thermal decomposition layer 330 is the same as the material of the first layer 310, the first layer 310 is located between the display panel 200 and the second layer 320, the first layer 310 includes polyimide, and the second layer 320 includes silicone or/and epoxy.
The first layer 310 is a polyimide system, the second layer 320 is an organic polymer with relatively high hardness, the first wavelength range corresponds to less than or equal to 400nm, the second layer 320 is taken as a siloxane as an example, and the second wavelength range corresponds to less than or equal to 300nm, so that the third wavelength range corresponds to 300nm to 400nm, preferably, a laser with a wavelength of about 350nm can be selected to irradiate the protective layer 300, the first layer 310 has a strong absorptivity (greater than 90%) for the laser with the wavelength, the second layer 320 has a weak absorptivity (less than 90%) for the laser with the wavelength, the first layer 310 is decomposed under the action of heat, typical decomposition products are carbon dioxide and water, and due to high laser heat quantity, the water can be directly changed into water vapor to be dispersed, the stripping and removal of the second layer 320 away from one side of the display panel 200 are facilitated, the simple repair and replacement process is facilitated, and the maintenance cost of the display module 100 is reduced.
In some embodiments, the first layer 310 and the second layer 320 are both transparent film layers, such as transparent polyimide for the first layer 310.
In some embodiments, referring to fig. 1-4, the thickness of the thermal decomposition layer 330 is less than the thickness of the first layer 310, and the thickness of the thermal decomposition layer 330 is less than the thickness of the second layer 320.
When the thermal decomposition layer 330 is separately disposed, the smaller the thickness of the thermal decomposition layer 330, the smaller the thickness effect on the overall display module 100, and the smaller the heat transfer effect on the surrounding film layers, preferably, the thickness of the first layer 310 is greater than 20 micrometers, and the thickness of the thermal decomposition layer 330 is less than 1 micrometer, so that after the peeling of the second layer 320, the surface of the first layer 310 far from the side of the display panel 200 still has higher flatness.
In some embodiments, referring to fig. 4, the display module 100 includes a central region a and an edge region B surrounding the central region a, and the thermal decomposition layer 330 is located in the edge region B.
After the thermal decomposition layer 330 in the edge area B is decomposed, the second layer 320 can be easily peeled off, so as to realize the effect of changing the protective layer 300, and reduce the influence on the first layer 310 in the central area a, for example, the flatness of the first layer 310 in the central area a is not affected, and the repair time and cost for the first layer 310 are reduced.
In some embodiments, the thickness of the first layer 310 is less than or equal to 100 micrometers, and the thickness of the first layer 310 is too large, so that the overall impact resistance of the module is improved, but coating the display panel 200 with too thick transparent polyimide material may seriously affect the neutral layer of the display panel 200, and affect the overall bending performance.
In some embodiments, the ratio of the light absorbance of the first layer 310 in the third wavelength range to the light absorbance of the second layer 320 in the third wavelength range is greater than or equal to 5.
The first layer 310 and the second layer 320 have a distinct difference in light absorptivity in the third wavelength range, which is advantageous for concentrating the decomposition of the first layer 310, concentrating the heat utilization, and accelerating the decomposition rate of the first layer 310.
Preferably, the ratio of the light absorptivity of the first layer 310 in the third wavelength range to the light absorptivity of the second layer 320 in the third wavelength range is greater than or equal to 10.
In some embodiments, controlling the thermal impact is a problem in maintaining the lift-off process, including laser type, laser power, pulse spacing, etc., where the relevant process needs to be tailored to the material itself, adjusted in trial and error. For example, femtosecond or picosecond lasers may be used to process at lower laser energies, for example with less than or equal to 200mJ/cm 2 Is a laser beam of (a).
In some embodiments, the formation process of the first layer 310, the second layer 320, and the thermal decomposition layer 330 may be a coating process.
After the second layer 320 is peeled off, a further second layer 320 is made by the coating process to realize replacement. It should be noted that the surface of the first layer 310 may need to be subjected to some treatment after laser lift-off, such as cleaning, planarization repair, etc.
In some embodiments, referring to fig. 1, the display module 100 further includes a support member 400 located on a side of the display panel 200 away from the protective layer 300.
In some embodiments, referring to fig. 2, the display panel 200 further includes a polarizing layer 500 disposed between the panel body and the protective layer 300.
In some embodiments, the display panel 200 may be a display panel 200 with a depolarized layer 500, as shown in fig. 1, or a display panel 200 with a polarized layer 500, as shown in fig. 2.
According to the invention, the protective layer is arranged to comprise two layers and the thermal decomposition layer positioned between the two layers, when the outer surface of the protective layer needs to be replaced, the thermal decomposition layer is decomposed by utilizing laser, so that the outer protective film layer is conveniently stripped and removed, the maintenance and replacement process is convenient, and the maintenance and replacement cost of the display module is reduced.
Referring to fig. 5, the embodiment of the invention further provides a method for manufacturing the display module 100, which includes:
s100, a display module 100 including a display panel 200 and a passivation layer 300 disposed on a light emitting side of the display panel 200 is provided, wherein the passivation layer 300 includes a first layer 310, a second layer 320, and a thermal decomposition layer 330 disposed between the first layer 310 and the second layer 320, please refer to FIG. 6A
S200, irradiating the protective layer 300 with laser light to decompose the thermal decomposition layer 330, please refer to fig. 6B.
And S300, removing the second layer 320.
S400, a protective material layer is formed on the light-emitting side of the display panel 200.
According to the invention, the protective layer is arranged to comprise two layers and the thermal decomposition layer positioned between the two layers, when the outer surface of the protective layer needs to be replaced, the thermal decomposition layer is decomposed by utilizing laser, so that the outer protective film layer is conveniently stripped and removed, the maintenance and replacement process is convenient, and the maintenance and replacement cost of the display module is reduced.
The technical scheme of the present invention will now be described with reference to specific embodiments.
In some embodiments, the material of the protective material layer may be the same as the material of the second layer 320.
In some embodiments, controlling the thermal impact is a maintenance of the lift-off processProblems include laser type, laser power, pulse interval, etc., and related processes need to be tailored to the material itself, and adjusted in trial and error. For example, femtosecond or picosecond lasers may be used to process at lower laser energies, for example with less than or equal to 200mJ/cm 2 Is a laser beam of (a).
Referring to fig. 7, the embodiment of the invention further provides a display device 10, including any one of the display modules 100 and the device main body 20, wherein the display module 100 and the device main body 20 are combined into a whole.
The specific structure of the display module 100 refers to any of the embodiments of the display module 100 and the drawings, and will not be described herein.
In this embodiment, the device main body 20 may include a middle frame, a frame glue, a plug-in driver, a plug-in radiator, etc., and the display device 10 may be a display terminal such as a mobile phone, a tablet, a television, etc., which is not limited herein.
The embodiment of the invention discloses a display module and a display device; the display module comprises a display panel and a protective layer, wherein the protective layer is positioned on the light emitting side of the display panel and comprises a first layer, a second layer and a thermal decomposition layer positioned between the first layer and the second layer; according to the invention, the protective layer is arranged to comprise two layers and the thermal decomposition layer positioned between the two layers, when the outer surface of the protective layer needs to be replaced, the thermal decomposition layer is decomposed by utilizing laser, so that the outer protective film layer is conveniently stripped and removed, the maintenance and replacement process is convenient, and the maintenance and replacement cost of the display module is reduced.
The display module and the display device provided by the embodiment of the invention are described in detail, and specific examples are applied to illustrate the principle and the implementation of the invention, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention; 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 invention, the present description should not be construed as limiting the present invention.
Claims (8)
1. A display module, comprising:
a display panel;
the protective layer is positioned on the light emitting side of the display panel;
wherein the protective layer comprises a first layer, a second layer, and a thermal decomposition layer between the first layer and the second layer; the material of the thermal decomposition layer is the same as that of the first layer, and the first layer is positioned between the display panel and the second layer; the first layer has an absorptivity of greater than or equal to 30% for light in a first wavelength range, and the second layer has an absorptivity of greater than 30% for light in a second wavelength range; the first wavelength range includes a third wavelength range, the third wavelength range being outside the second wavelength range.
2. The display module of claim 1, wherein the third wavelength range is greater than or equal to 20nm.
3. The display module of claim 1, wherein the first layer has an absorptivity of greater than or equal to 90% for light in a third wavelength range, and the second layer has an absorptivity of less than 10% for light in the third wavelength range.
4. The display module of claim 1, wherein the first layer is located between the display panel and the second layer, the first layer comprising polyimide, the second layer comprising polyimide;
wherein the polyimide in the second layer comprises an ester group or/and a silicon group.
5. The display module of claim 1, wherein the first layer is located between the display panel and the second layer, the first layer comprises polyimide, and the second layer comprises silicone or/and epoxy.
6. The display module of claim 1, wherein the thickness of the thermally decomposed layer is less than the thickness of the first layer, and the thickness of the thermally decomposed layer is less than the thickness of the second layer.
7. The display module of claim 1, wherein the display module includes a central region and an edge region surrounding the central region, the thermally decomposed layer being located within the edge region.
8. A display device comprising the display module according to any one of claims 1 to 7 and a device body, the display module being integrated with the device body.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5616927A (en) * | 1993-10-21 | 1997-04-01 | Shin-Etsu Chemical Co., Ltd. | Frame-supported pellicle for dustproof protection of photomask |
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| CN102636898B (en) * | 2012-03-14 | 2014-03-12 | 京东方科技集团股份有限公司 | Manufacturing method of flexible display devices |
| KR101276487B1 (en) * | 2012-10-05 | 2013-06-18 | 주식회사 이녹스 | Wafer laminated body and method for bonding and debonding between device wafer and carrier wafer |
| CN108695446B (en) * | 2017-04-05 | 2020-07-28 | 昆山工研院新型平板显示技术中心有限公司 | Stripping method of flexible display panel |
| CN112574455A (en) * | 2019-09-27 | 2021-03-30 | 新恒东薄膜材料（常州）有限公司 | High-hardness high-wear-resistance transparent polyimide hardened film with good coating adhesion |
| CN111430301B (en) * | 2020-04-01 | 2023-01-24 | 深圳市华星光电半导体显示技术有限公司 | Manufacturing method of flexible display panel |
| CN111500209A (en) * | 2020-06-09 | 2020-08-07 | 京东方科技集团股份有限公司 | Separable protective film, stripping method thereof, display panel and electronic equipment |
| CN114067675B (en) * | 2020-08-07 | 2024-05-24 | 北京小米移动软件有限公司 | Folding screen, maintenance method thereof and electronic equipment |
| CN112820194A (en) * | 2021-01-05 | 2021-05-18 | 深圳市华星光电半导体显示技术有限公司 | Flexible display panel and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5616927A (en) * | 1993-10-21 | 1997-04-01 | Shin-Etsu Chemical Co., Ltd. | Frame-supported pellicle for dustproof protection of photomask |
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