CN112876723A - Flexible and bendable graphene screen and preparation method thereof - Google Patents

Flexible and bendable graphene screen and preparation method thereof Download PDF

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Publication number
CN112876723A
CN112876723A CN202110057316.4A CN202110057316A CN112876723A CN 112876723 A CN112876723 A CN 112876723A CN 202110057316 A CN202110057316 A CN 202110057316A CN 112876723 A CN112876723 A CN 112876723A
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graphene
film layer
flexible
screen
bendable
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任国峰
马立国
刘少华
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Beijing Yingchuanglihe Electronic Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/06—Coating with compositions not containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/182—Graphene
    • C01B32/184—Preparation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/182—Graphene
    • C01B32/184—Preparation
    • C01B32/186—Preparation by chemical vapour deposition [CVD]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

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  • Engineering & Computer Science (AREA)
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  • Nanotechnology (AREA)
  • Polymers & Plastics (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Carbon And Carbon Compounds (AREA)
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Abstract

The invention discloses a flexible and bendable graphene screen and a preparation method thereof, wherein the method comprises the following steps: step 1, depositing an organic film layer on a cleaned rigid substrate, and drying and curing; step 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing; and 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen. The invention also provides a graphene flexible and bendable screen prepared by the method. According to the graphene flexible bendable screen and the preparation method thereof, the flexible screen prepared by the method is excellent in bendable performance, and by utilizing the heat-conducting performance of the graphene, the screen is fast in heat conduction, and the phenomenon that the screen of a product is heated is not easy to happen. And the light transmittance is higher, the power consumption is lower, the performance is more stable, and the light is lighter and thinner.

Description

Flexible and bendable graphene screen and preparation method thereof
Technical Field
The invention relates to a graphene screen and a preparation method thereof, in particular to a flexible and bendable graphene screen and a preparation method thereof.
Background
Touch Panel (Touch Panel), also known as Touch screen or Touch Panel, is an inductive liquid crystal display device capable of receiving input signals such as Touch, when touching graphic buttons on the screen, the Touch feedback system on the screen can drive various connecting devices according to pre-programmed programs, and can replace mechanical button panels and produce vivid video and audio effects by means of liquid crystal display pictures. The touch screen can be classified into a resistive type, a capacitive type, an infrared type, a surface acoustic wave type, an optical type, and the like according to a medium used and a working principle.
Graphene is a new material with a single-layer sheet structure formed by carbon atoms, the single-layer graphene is only 0.34 nanometer thick, the diameter of one hair is approximately equal to the thickness of stacked hundred thousand layers of graphene, so that the single-layer graphene cannot be seen by naked eyes, the single-layer graphene only absorbs about 2.3 percent of light and can almost completely transmit light, and meanwhile, the graphene has very high electrical conductivity, is the thinnest and hardest nano material in the world, and can be used for manufacturing a transparent flexible touch display screen.
Disclosure of Invention
The invention aims to provide a graphene screen and a preparation method thereof, and the prepared flexible screen has the advantages of higher light transmittance, lower power consumption, more stable performance, lighter and thinner property, and can be bent and kinked.
In order to achieve the above object, the present invention provides a method for preparing a flexible and bendable screen of graphene, wherein the method comprises: the method comprises the following steps: step 1, depositing an organic film layer on a cleaned rigid substrate, and drying and curing; step 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing; and 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
The preparation method of the flexible and bendable graphene screen comprises the following steps of carrying out deposition, and carrying out chemical vapor deposition, plasma vapor deposition and electrophoretic deposition.
In the preparation method of the graphene flexible and bendable screen, the organic film layer is a polyimide layer; the thickness of the organic film layer is 10-25 μm, and the number of the layers is 1-15.
In the preparation method of the graphene flexible bendable screen, the rigid substrate in the step 1 is any one of a glass substrate, a ceramic substrate and a metal substrate.
In the preparation method of the flexible and bendable graphene screen, in the step 1, the drying temperature is 400-.
In the preparation method of the flexible and bendable graphene screen, the graphene film layer in the step 2 is prepared from one or more of carbon dioxide supercritical expansion exfoliated graphene, chemical oxidation exfoliated graphene oxide, coupling agent modified graphene oxide, amino polymer modified graphene oxide, cationic surfactant modified graphene oxide and bromododecane modified graphene oxide.
The preparation method of the flexible and bendable graphene screen comprises the following steps of forming a graphene film layer, wherein the thickness of the graphene film layer is 5-15 microns, and the number of the graphene film layers is 1-10.
In the preparation method of the flexible and bendable graphene screen, in the step 2, the drying temperature is 50-80 ℃ and the drying time is 10-40 min.
In the above preparation method of the graphene flexible bendable screen, in the step 3, the peeling environment is a high humidity environment with humidity greater than 60% or a UV irradiation environment.
The invention also provides the graphene flexible and bendable screen prepared by the method.
The graphene flexible bendable screen and the preparation method thereof provided by the invention have the following advantages:
this flexible screen bending property is excellent, and utilizes graphite alkene thermal conductivity, and this screen heat conduction is fast, and difficult product screen phenomenon of generating heat. And the light transmittance is higher, the power consumption is lower, the performance is more stable, and the light is lighter and thinner.
The preparation method provided by the invention is simple and easy to operate, low in cost, more environment-friendly, high in economic benefit and suitable for large-scale industrial production.
Detailed Description
The following further describes embodiments of the present invention.
The invention provides a preparation method of a graphene flexible bendable screen, which comprises the following steps: step 1, depositing an organic film layer on a cleaned rigid substrate, and drying and curing; step 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing; and 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
Preferably, the deposition is performed by any one of chemical vapor deposition, plasma vapor deposition, and electrophoretic deposition.
The organic film layer is a polyimide layer; the thickness of the organic film layer is 10-25 μm, and the number of the layers is 1-15.
The rigid substrate in step 1 is any one of a glass substrate, a ceramic substrate and a metal substrate.
The drying temperature in the step 1 is 400-.
In the step 2, the graphene film layer adopts any one or more of carbon dioxide supercritical expansion stripping graphene, chemical oxidation stripping graphene oxide, coupling agent modified graphene oxide, amino polymer modified graphene oxide, cationic surfactant modified graphene oxide and bromododecane modified graphene oxide.
The thickness of the graphene film layer is 5-15 mu m, and the number of the layers is 1-10.
The drying temperature in the step 2 is 50-80 ℃, and the drying time is 10-40 min.
The environment stripped in the step 3 is a high-humidity environment with the humidity of more than 60% or a UV irradiation environment.
The invention also provides a graphene flexible and bendable screen prepared by the method.
The flexible and bendable graphene screen and the method for manufacturing the flexible and bendable graphene screen according to the present invention are further described with reference to the following embodiments.
Example 1
A method of making a graphene flexible bendable screen, comprising:
step 1, depositing an organic film layer on the cleaned rigid substrate, and drying and curing.
The organic film layer is a polyimide layer; the thickness of the organic film layer was 10 μm, and the number of layers was 1. The rigid substrate is a glass substrate. The drying temperature is 400-600 ℃, and the drying time is 15-50 min.
And 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing.
The graphene film layer is formed by stripping graphene through carbon dioxide supercritical expansion.
The thickness of the graphene film layer is 5 mu m, and the number of the layers is 1. The drying temperature is 50-80 deg.C, and the drying time is 10-40 min.
And 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
The environment for peeling is a high humidity environment with humidity of more than 60% or a UV irradiation environment.
The method adopted for deposition is a chemical vapor deposition method.
The embodiment also provides the graphene flexible and bendable screen prepared by the method.
Example 2
A method of making a graphene flexible bendable screen, comprising:
step 1, depositing an organic film layer on the cleaned rigid substrate, and drying and curing.
The organic film layer is a polyimide layer; the thickness of the organic film layer was 14 μm, and the number of layers was 4. The rigid substrate is a ceramic substrate. The drying temperature is 400-600 ℃, and the drying time is 15-50 min.
And 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing.
The graphene film layer adopts chemically oxidized and stripped graphene oxide or coupling agent modified graphene oxide.
The thickness of the graphene film layer is 7 mu m, and the number of the layers is 3. The drying temperature is 50-80 deg.C, and the drying time is 10-40 min.
And 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
The environment for peeling is a high humidity environment with humidity of more than 60% or a UV irradiation environment.
The method adopted for deposition is a plasma vapor deposition method.
The embodiment also provides the graphene flexible and bendable screen prepared by the method.
Example 3
A method of making a graphene flexible bendable screen, comprising:
step 1, depositing an organic film layer on the cleaned rigid substrate, and drying and curing.
The organic film layer is a polyimide layer; the thickness of the organic film layer is 18 μm, and the number of layers is 8. The rigid substrate is a metal substrate. The drying temperature is 400-600 ℃, and the drying time is 15-50 min.
And 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing.
The graphene film layer is made of amino polymer modified graphene oxide.
The thickness of the graphene film layer is 10 mu m, and the number of the layers is 5. The drying temperature is 50-80 deg.C, and the drying time is 10-40 min.
And 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
The environment for peeling is a high humidity environment with humidity of more than 60% or a UV irradiation environment.
The method adopted for deposition is an electrophoretic deposition method.
The embodiment also provides the graphene flexible and bendable screen prepared by the method.
Example 4
A method of making a graphene flexible bendable screen, comprising:
step 1, depositing an organic film layer on the cleaned rigid substrate, and drying and curing.
The organic film layer is a polyimide layer; the thickness of the organic film layer was 22 μm, and the number of layers was 12. The rigid substrate is a glass substrate. The drying temperature is 400-600 ℃, and the drying time is 15-50 min.
And 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing.
The graphene film layer adopts a cationic surfactant to modify graphene oxide.
The thickness of the graphene film layer is 13 mu m, and the number of the layers is 8. The drying temperature is 50-80 deg.C, and the drying time is 10-40 min.
And 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
The environment for peeling is a high humidity environment with humidity of more than 60% or a UV irradiation environment.
The method adopted for deposition is a plasma vapor deposition method.
The embodiment also provides the graphene flexible and bendable screen prepared by the method.
Example 5
A method of making a graphene flexible bendable screen, comprising:
step 1, depositing an organic film layer on the cleaned rigid substrate, and drying and curing.
The organic film layer is a polyimide layer; the thickness of the organic film layer is 25 μm, and the number of layers is 15. The rigid substrate is a ceramic substrate. The drying temperature is 400-600 ℃, and the drying time is 15-50 min.
And 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing.
The graphene film layer adopts bromododecane modified graphene oxide.
The thickness of the graphene film layer is 15 mu m, and the number of the layers is 10. The drying temperature is 50-80 deg.C, and the drying time is 10-40 min.
And 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
The environment for peeling is a high humidity environment with humidity of more than 60% or a UV irradiation environment.
The method adopted for deposition is a plasma vapor deposition method.
The embodiment also provides the graphene flexible and bendable screen prepared by the method.
Compared with the existing touch display screen, the graphene flexible bendable screen and the preparation method thereof provided by the invention have the advantages of higher light transmittance, lower power consumption, more stable performance, lighter and thinner property, and can be bent and kinked. The preparation method provided by the invention is simple and easy to operate, low in cost, more environment-friendly, high in economic benefit and suitable for large-scale industrial production.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.

Claims (10)

1. A preparation method of a graphene flexible and bendable screen is characterized by comprising the following steps:
step 1, depositing an organic film layer on a cleaned rigid substrate, and drying and curing;
step 2, depositing a graphene film layer on the cleaned organic film layer, and drying and curing;
and 3, stripping the organic film layer and the organic film layer from the rigid substrate to obtain the graphene flexible bendable screen.
2. The method for preparing the flexible and bendable screen of graphene as claimed in claim 1, wherein the deposition is performed by any one of chemical vapor deposition, plasma vapor deposition, and electrophoretic deposition.
3. The method for preparing a flexible and bendable screen of graphene according to claim 1, wherein the organic film layer is a polyimide layer; the thickness of the organic film layer is 10-25 μm, and the number of the layers is 1-15.
4. The method for preparing a flexible and bendable screen of graphene according to claim 1, wherein the rigid substrate in step 1 is any one of a glass substrate, a ceramic substrate and a metal substrate.
5. The method for preparing the flexible and bendable screen of graphene as claimed in claim 1, wherein in step 1, the drying temperature is 400-.
6. The method for preparing a flexible and bendable graphene screen according to claim 1, wherein the graphene film layer in step 2 is prepared from one or more of carbon dioxide supercritical expansion exfoliated graphene, chemically oxidized exfoliated graphene, coupling agent modified graphene oxide, amino polymer modified graphene oxide, cationic surfactant modified graphene oxide, and bromododecane modified graphene oxide.
7. The method for preparing the graphene flexible and bendable screen according to claim 6, wherein the thickness of the graphene film layer is 5-15 μm, and the number of layers is 1-10.
8. The method for preparing the flexible and bendable screen of graphene according to claim 1, wherein in the step 2, the drying temperature is 50-80 ℃ and the time is 10-40 min.
9. The method for preparing a flexible and bendable screen of graphene according to claim 1, wherein in the step 3, the peeling environment is a high humidity environment with humidity of more than 60% or a UV irradiation environment.
10. A graphene flexible bendable screen prepared by the method of any one of claims 1-9.
CN202110057316.4A 2021-01-15 2021-01-15 Flexible and bendable graphene screen and preparation method thereof Pending CN112876723A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102344131A (en) * 2011-07-06 2012-02-08 中国科学院上海微系统与信息技术研究所 Method for manufacturing graphene film on molybdenum-based substrate
CN102971126A (en) * 2010-07-02 2013-03-13 宝洁公司 Process for making films from nonwoven webs
CN104880844A (en) * 2015-05-22 2015-09-02 重庆捷尔士显示技术有限公司 Novel liquid crystal display and manufacturing method
CN107936275A (en) * 2017-12-13 2018-04-20 长春聚明光电材料有限公司 A kind of Kapton of flexibility water white transparency and preparation method thereof
CN110408204A (en) * 2019-07-24 2019-11-05 深圳市华星光电技术有限公司 Flexible substrate material, flexible display panels substrate fabrication method and flexible display panels
CN110867533A (en) * 2019-11-28 2020-03-06 华中科技大学 Polyimide film stripping method based on multilayer graphene as sacrificial layer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102971126A (en) * 2010-07-02 2013-03-13 宝洁公司 Process for making films from nonwoven webs
CN102344131A (en) * 2011-07-06 2012-02-08 中国科学院上海微系统与信息技术研究所 Method for manufacturing graphene film on molybdenum-based substrate
CN104880844A (en) * 2015-05-22 2015-09-02 重庆捷尔士显示技术有限公司 Novel liquid crystal display and manufacturing method
CN107936275A (en) * 2017-12-13 2018-04-20 长春聚明光电材料有限公司 A kind of Kapton of flexibility water white transparency and preparation method thereof
CN110408204A (en) * 2019-07-24 2019-11-05 深圳市华星光电技术有限公司 Flexible substrate material, flexible display panels substrate fabrication method and flexible display panels
CN110867533A (en) * 2019-11-28 2020-03-06 华中科技大学 Polyimide film stripping method based on multilayer graphene as sacrificial layer

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Application publication date: 20210601