Transparent film, transparent electro-conductive laminate, and touch panel, solar cell, and display device using the same

Patent metadata

Field	Value
Publication number	US-9768328-B2
Application number	US-201214237635-A
Country	US
Kind code	B2
Filing date	Aug 3, 2012
Priority date	Aug 8, 2011
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A transparent electro-conductive laminate comprising:
a substrate film made of a polyimide; and a thin film made of an electro-conductive material and stacked on the substrate film, wherein the polyimide is a polyimide
containing at least one repeating unit represented by the following general formula (1):

[in the formula (1), R 1 , R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, R 4 represents an aryl group having 6 to 40 carbon atoms, and n represents an integer of 0 to 12],
having a glass transition temperature of 350° C. to 450° C., and having a linear expansion coefficient of 30 ppm/° C. or less, the linear expansion coefficient being determined by measuring change in length under a nitrogen atmosphere and under a condition of a rate of temperature rise of 5° C./minute in a temperature range from 50° C. to 200° C.

First claim

The invention claimed is:

1. A transparent electro-conductive laminate comprising:
a substrate film made of a polyimide; and
a thin film made of an electro-conductive material and stacked on the substrate film, wherein
the polyimide is a polyimide comprising:
a repeating unit (A) that is one group selected from the group consisting of groups represented by the general formula (1), where R 4 is represented by the general formula (4); and groups represented by the general formula (1), where R 4 is represented by the general formula (5), where Q is one of groups represented by —CONH—, —COO—, —CO—, and —C 6 H 4 —, and
a repeating unit (B) that is one group selected from the group consisting of groups represented by the general formula (1), where R 4 is represented by the general formula (2); and groups represented by the general formula (1), where R 4 is represented by the general formula (5), where Q is one of groups represented by —O—, —S—, —CH 2 —, and —O—C 6 H 4 —O—;

wherein in the formula (1), R 1 , R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, n represents an integer of 0 to 12, and wherein in the formula (4), R 5 represents one selected from the group consisting of a hydrogen atom, a fluorine atom, a methyl group, an ethyl group, and a trifluoromethyl group,
having a glass transition temperature of 350° C. to 450° C., and
having a linear expansion coefficient of 30 ppm/° C. or less, the linear expansion coefficient being determined by measuring change in length under a nitrogen atmosphere and under a condition of a rate of temperature rise of 5° C./minute in a temperature range from 50° C. to 200° C.

2. The transparent electro-conductive laminate according to claim 1 , wherein
the repeating unit (A) is one group selected from the group consisting of groups represented by the general formula (1), where R 4 is represented by the general formula (4); and groups represented by the general formula (1), where R 4 is represented by the general formula (5), where Q is one of groups represented by —CONH— and —COO—, and
the repeating unit (B) is one group selected from the group consisting of groups represented by the general formula (1), where R 4 is represented by the general formula (5), where Q is one of groups represented by —O— and —CH 2 —.

3. A touch panel comprising the transparent electroconductive laminate according to claim 1 .

4. A solar cell comprising the transparent electro-conductive laminate according to claim 1 .

5. A display device comprising the transparent electroconductive laminate according to claim 1 .

6. A transparent film comprising a polyimide comprising:
a repeating unit (A) that is one group selected from the group consisting of groups represented by the general formula (1), where R 4 is represented by the general formula (4); and groups represented by the general formula (1), where R 4 is represented by the general formula (5), where Q is one of groups represented by —CONH—, —COO—, —CO—, and —C 6 H 4 —, and
a repeating unit (B) that is one group selected from the group consisting of groups represented by the general formula (1), where R 4 is represented by the general formula (2); and groups represented by the general formula (1), where R 4 is represented by the general formula (5), where Q is one of groups represented by —O—, —S—, —CH 2 —, and —O—C 6 H 4 —O—:

wherein in the formula (1), R 1 , R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, n represents and integer of 0 to 12, wherein in the formula (4), R 5 represents one selected from the group consisting of a hydrogen atom, a fluorine atom, a methyl group, an ethyl group, and a trifluoromethyl group, and wherein the formula (5),
having a glass transition temperature of 350° C. to 450° C., and
having a linear expansion coefficient of 30 ppm/° C. or less, the linear expansion coefficient being determined by measuring change in length under a nitrogen atmosphere and under a condition of a rate of temperature rise of 5° C./minute in a temperature range from 50° C. to 200° C.

Assignees

• Komatsu Shinichi
• Shiibashi Akira
• FUJISHIRO Rieko
• Ueno Ryuichi
• Matsumoto Takaya
• Jx Nippon Oil & Energy Corp

Inventors

• Komatsu Shinichi
• Shiibashi Akira
• FUJISHIRO Rieko
• Ueno Ryuichi
• Matsumoto Takaya

Classifications

• C08G73/1078

  wholly aromatic in the diamino moiety · CPC title

• C08G73/14

  Polyamide-imides · CPC title

• C08G73/1042

  Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds · CPC title

• C08L79/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title

• Y10T428/31721

  Of polyimide · CPC title