IDiyas

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9493614 B1

PDFFull Text
Date of Patent:
Nov. 15, 2016

Filed:

Dec. 26, 2013

Polyimide precursor, polyimide, flexible substrate prepared therewith, color filter and production method thereof, and flexible display device

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Junji Wakita, Otsu, JP;

Yukari Jo, Otsu, JP;

Masao Tomikawa, Otsu, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Rabon Sergent

Int. Cl.
CPC ...
C08G 73/10 (2006.01); G02B 5/28 (2006.01); H01L 51/00 (2006.01); G02B 5/22 (2006.01); H01L 51/52 (2006.01); B29D 11/00 (2006.01); C09D 179/08 (2006.01); B29K 79/00 (2006.01); H01L 27/32 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1007 (2013.01); B29D 11/00634 (2013.01); C08G 73/106 (2013.01); C08G 73/1039 (2013.01); C08G 73/1042 (2013.01); C08G 73/1053 (2013.01); C08G 73/1064 (2013.01); C08G 73/1067 (2013.01); C08G 73/1071 (2013.01); C08G 73/1082 (2013.01); C09D 179/08 (2013.01); G02B 5/223 (2013.01); G02B 5/287 (2013.01); H01L 51/0024 (2013.01); H01L 51/52 (2013.01); B29K 2079/08 (2013.01); B29K 2995/002 (2013.01); B29K 2995/0026 (2013.01); H01L 27/3241 (2013.01); H01L 51/0097 (2013.01);
Abstract

The present invention is based on a polyimide precursor having unit structures represented by general formula (1) and unit structures represented by general formula (2), provides a polyimide precursor for which film whitening, cracking and bubbling do not occur regardless of film baking conditions, and provides a flexible TFT array, a flexible color filter, and a flexible substrate with a gas barrier layer using the polyimide precursor, and a flexible display device, etc. using same. (In general formulas (1) and (2), X-Xeach independently represents a hydrogen atom, C1 to C10 monovalent organic group or C1 to C10 monovalent alkylsilyl group. Ris represented by general formula (3) and Ris represented by general formula (4).) (In general formula (4), Rand Reach independently represents a C1 to C10 monovalent organic group.)

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