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Flexible transparent conducting film for polyimide substrate and preparation method thereof

A technology of transparent conductive film and polyimide, which is applied in the direction of cable/conductor manufacturing, conductive layer on insulating carrier, circuit, etc., and can solve problems affecting the transmittance of transparent conductive film, etc.

Active Publication Date: 2010-09-15
辽宁奥克华辉新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, based on the research of flexible transparent conductive films on polyimide substrates, most of the substrates are commercial polyimides, which are often brown-yellow, which affects the transmittance of transparent conductive films in the visible light region.

Method used

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  • Flexible transparent conducting film for polyimide substrate and preparation method thereof
  • Flexible transparent conducting film for polyimide substrate and preparation method thereof
  • Flexible transparent conducting film for polyimide substrate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036]In a three-necked reaction flask equipped with a stirrer, a thermometer and a nitrogen inlet, 4.2833 g (0.01 mol) of 1,4-bis(4-amino-2-trifluoromethylphenoxy)benzene was dissolved in 37.72 ml N, N-dimethylacetamide solvent, stirring to make the solution clear and transparent. Then add 1.9611g (0.01mol) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA) to the solution at one time, stir to make it completely dissolved and continue the reaction for 15-25 Hours, a transparent viscous liquid-polyamic acid solution was obtained, the solid content by weight was 15wt%, and the intrinsic viscosity was 1.26dL / g. Coat the polyamic acid solution on a clean glass plate, place it in a drying oven with nitrogen protection, and heat up according to the following program: 80°C for 2hrs, 120°C for 1hr, 150°C for 1hr, 200°C for 1hr, and 250°C 1hr, 0.5hr at 250°C. After the temperature dropped to room temperature, the glass plate was taken out and placed in warm water to remove the...

Embodiment 2

[0039] In a three-necked reaction flask equipped with a stirrer, a thermometer and a nitrogen inlet, 5.0442 g (0.01 mol) of 4,4'-bis(4-amino-2-trifluoromethylphenoxy)biphenyl was dissolved in 42.32ml of N,N-dimethylacetamide solvent, stirred to make the solution clear and transparent. Then, 1.9611 g (0.01 mol) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA) was added to the solution at one time, stirred to dissolve it completely, and continued to react for 15 to 25 minutes under a nitrogen protection environment. Hours, a transparent viscous liquid-polyamic acid solution was obtained, the solid content by weight was 15wt%, and the intrinsic viscosity was 1.20dL / g. Coat the polyamic acid solution on a clean glass plate, place it in a drying oven with nitrogen protection, and heat up according to the following program: 80°C for 2hrs, 120°C for 1hr, 150°C for 1hr, 200°C for 1hr, and 250°C 1hr, 0.5hr at 300°C. After the temperature dropped to room temperature, the glass...

Embodiment 3

[0042] In a three-necked reaction flask equipped with a stirrer, a thermometer and a nitrogen inlet, 5.2042 g of 2,2-bis[4-(4-amino-2-trifluoromethylphenoxy)phenyl]diphenyl ether (0.01mol) was dissolved in 43.29ml of N,N-dimethylacetamide solvent, stirred to make the solution clear and transparent. Then, 1.9611 g (0.01 mol) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA) was added to the solution at one time, stirred to dissolve it completely, and continued to react for 15 to 25 minutes under a nitrogen protection environment. Hours, a transparent viscous liquid-polyamic acid solution was obtained, the solid content by weight was 15wt%, and the intrinsic viscosity was 1.23dL / g. Coat the polyamic acid solution on a clean glass plate, place it in a drying oven with nitrogen protection, and heat up according to the following program: 80°C for 2hrs, 120°C for 1hr, 150°C for 1hr, 200°C for 1hr, and 250°C 1hr, 0.5hr at 300°C. After the temperature dropped to room temperat...

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Abstract

The invention relates to a flexible transparent conducting film for a polyimide substrate and a preparation method thereof. The preparation method comprises the following steps: taking 1, 2, 3, 4-cyclobutanetetracarboxylic dianhydride and a fluorine-containing benzylic ether aromatic diamine compound as monomers for synthesizing polyimide; obtaining the colorless and transparent polyimide film by low-temperature solution polycondensation and heat imidization treatment; carrying out surface treatment for washing and etching the polyimide film; and finally depositing a nano-indium tin oxide film layer on the surface of the polyimide film by virtue of a magnetron sputtering technology under a room temperature condition to obtain the flexible transparent conducting film for the polyimide substrate. The conducting film has higher operating temperature, light transmittance at 450nm is 88-95% and surface resistivity is about 3.0 is multiplied by 10<-4> omega.cm.

Description

technical field [0001] The invention relates to a flexible transparent conductive film of an organic substrate, in particular to a flexible transparent conductive film of a polyimide substrate and a preparation method thereof. Background technique [0002] According to different substrate materials, transparent conductive films can be divided into two types: hard and flexible. Hard films are mainly glass substrates. Following the widespread use of transparent conductive films on glass substrates, in order to meet the needs of the development of organic optoelectronic devices, the international community has paid great attention to the research of transparent conductive films on flexible substrates, and has achieved impressive results. Inspiring research results. Compared with conductive films on hard substrates, transparent conductive films on organic flexible substrates not only have the optoelectronic properties of glass-based transparent conductive films, but also have m...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00C08L79/08
Inventor 胡知之鲁云华边继明王永飞房庆旭雷芃张志强肖国勇迟海军董岩赵洪斌李晓王翠苹
Owner 辽宁奥克华辉新材料有限公司
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