POLYIMIDE-BASED POLYMER FILM, AND SUBSTRATE FOR DISPLAY DEVICE AND OPTICAL DEVICE, EACH USING SAME

Title:

POLYIMIDE-BASED POLYMER FILM, AND SUBSTRATE FOR DISPLAY DEVICE AND OPTICAL DEVICE, EACH USING SAME

Document Type and Number:

WIPO Patent Application WO/2020/159174

Kind Code:

A1

Abstract:

The present invention relates to a polyimide-based polymer film, and a substrate for a display device and an optical device, each using same, wherein the polyimide-based polymer film is synthesized by a reaction between specifically structured acid anhydride compound and diamine compound, and thus can secure excellent flatness even in conditions of high-temperature thermal treatment and can stably maintain flatness even at additional thermal treatment.

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Inventors:

KIM KYUNGHWAN (KR)
PARK CHAN HYO (KR)

Application Number:

PCT/KR2020/001250

Publication Date:

August 06, 2020

Filing Date:

January 28, 2020

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C08J5/18; C08G73/10; C08L79/08; G02B1/04

Domestic Patent References:

WO2017111300A1

2017-06-29

Foreign References:

KR101796875B1	2017-11-10
KR20180033739A	2018-04-04
JP2013001899A	2013-01-07
KR20180081434A	2018-07-16
JP2010235641A	2010-10-21

Attorney, Agent or Firm:

YOU ME PATENT AND LAW FIRM (KR)

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