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Graphene transparent conductive film, preparation method of graphene transparent conductive film and liquid crystal film

A technology of transparent conductive film and graphene, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of foreign matter affecting the yield and quality of liquid crystal display devices, generating static electricity, and easily breaking down substrates, so as to avoid alignment layer and Effect of electrode separation and surface smoothing

Active Publication Date: 2019-08-16
GRAHOPE NEW MATERIALS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the liquid crystal is usually oriented through an alignment film, and the rubbing alignment technology is commonly used, but static electricity is generated during the rubbing alignment process, which is easy to break down the substrate, and foreign matter will also be generated to affect the yield and quality of the liquid crystal display device.
[0003] Graphene materials have excellent properties in mechanics, heat, optics and electricity. At present, using graphene as a planar alignment layer can only carry out planar alignment of liquid crystals, while coating a vertical alignment agent can only obtain a vertical alignment effect, which cannot satisfy Other pre-tilt angle requirements between 0-90°

Method used

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  • Graphene transparent conductive film, preparation method of graphene transparent conductive film and liquid crystal film
  • Graphene transparent conductive film, preparation method of graphene transparent conductive film and liquid crystal film
  • Graphene transparent conductive film, preparation method of graphene transparent conductive film and liquid crystal film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] A graphene transparent conductive film 100 includes a substrate layer 110, a patterned graphene layer 120, and a vertical alignment layer 130 arranged in sequence.

[0084] Wherein, the base material layer 110 is made of PI and has a thickness of 0.5 μm. The thickness of the patterned graphene layer 120 is 0.3 nm. The vertical alignment agent constituting the vertical alignment layer 130 is dodecylbenzenesulfonic acid. The area percentage of the vertical alignment layer 130 and the graphene region 122 is 5%:95%.

[0085] A method for preparing the above-mentioned graphene transparent conductive film 100 includes:

[0086] The substrate layer 110 is ultrasonically cleaned with ethanol, acetone, and deionized water, rinsed with deionized water, and then air-dried or dried with nitrogen.

[0087] Using chemical vapor deposition, a graphene layer is formed on the surface of the cleaned substrate layer 110. The graphene layer is covered with a fine metal mask, and the uncovered a...

Embodiment 2

[0089] A graphene transparent conductive film 100 includes a substrate layer 110, a patterned graphene layer 120, and a vertical alignment layer 130 arranged in sequence.

[0090] Wherein, the base material layer 110 is made of PET and has a thickness of 1 μm. The thickness of the patterned graphene layer 120 is 0.35 nm. The vertical alignment agent constituting the vertical alignment layer 130 is octadecylbenzenesulfonic acid. The area percentage of the vertical alignment layer 130 and the graphene region 122 is 30%:70%.

[0091] A method for preparing the above-mentioned graphene transparent conductive film 100 includes:

[0092] The substrate layer 110 is ultrasonically cleaned with ethanol, acetone, and deionized water, rinsed with deionized water, and then air-dried or dried with nitrogen.

[0093] A spin coating method is used to form a graphene oxide layer on the surface of the cleaned substrate layer 110. The graphene oxide layer is covered with a fine metal mask, and the u...

Embodiment 3

[0095] A graphene transparent conductive film 100 includes a substrate layer 110, a patterned graphene layer 120, and a vertical alignment layer 130 arranged in sequence.

[0096] Wherein, the base material layer 110 is made of PI and has a thickness of 10 μm. The thickness of the patterned graphene layer 120 is 1.1 nm. The vertical alignment agent constituting the vertical alignment layer 130 is 1,4'-dodecyloxy-4-hydroxybiphenyl. The area percentage of the vertical alignment layer 130 and the graphene region 122 is 50%:50%.

[0097] A method for preparing the above-mentioned graphene transparent conductive film 100 includes:

[0098] The substrate layer 110 is ultrasonically cleaned with ethanol, acetone, and deionized water, rinsed with deionized water, and then air-dried or dried with nitrogen.

[0099] Using chemical vapor deposition, a graphene layer is formed on the surface of the cleaned substrate layer 110. Cover the graphene layer with a fine metal mask, and perform oxidat...

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Abstract

The invention provides a graphene transparent conductive film, a preparation method of the graphene transparent conductive film and a liquid crystal film, and belongs to the field of photoelectric display. The graphene transparent conductive film comprises a base material layer, a patterned graphene layer and a vertical orientation layer which are sequentially arranged; the patterned graphene layer comprises a plurality of graphene oxide regions and a plurality of graphene regions; the graphene oxide regions and the graphene regions are alternately arranged in at least one direction; the vertical orientation layer comprises a plurality of orientation layer areas; and the plurality of the orientation layer areas are connected to the plurality of the graphene oxide areas in a one-to-one correspondence mode. The area ratios of the graphene areas to the vertical orientation layer are adjusted to obtain different pre-tilt angles. The preparation method of the graphene transparent conductivefilm comprises the steps of forming the patterned graphene layer on the surface of the base material layer; and forming the vertical orientation layer on the surfaces of the graphene oxide areas. Theliquid crystal film comprises a liquid crystal layer and two layers of graphene transparent conductive films; the liquid crystal layer is arranged between the two layers of the graphene transparent conductive films; and the vertical orientation layers of the two layers of the graphene transparent conductive films are both arranged on one sides close to the liquid crystal layer.

Description

Technical field [0001] This application relates to the field of optoelectronic display, and in particular to a graphene transparent conductive film, a preparation method thereof, and a liquid crystal film. Background technique [0002] The liquid crystal orientation technology greatly affects the performance of the liquid crystal device. At present, the liquid crystal is usually oriented through an alignment film, and the rubbing alignment technique is commonly used. However, static electricity is generated during the rubbing alignment process, which easily breaks down the substrate, and foreign matter may also affect the yield and quality of the liquid crystal display device. [0003] Graphene materials have excellent properties in terms of mechanics, heat, optics, and electricity. At present, the use of graphene as a planar alignment layer can only perform planar alignment of liquid crystals, while coating a vertical alignment agent can only achieve vertical alignment effects, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337
CPCG02F1/1337G02F1/133719
Inventor 李伟伟卢珂鑫谷文翠刘兆平
Owner GRAHOPE NEW MATERIALS TECH INC
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