PRECURSOR, POLYMER, OPTICAL FILM COMPRISING POLYMER, AND DISPLAY DEVICE COMPRISING OPTICAL FILM

Title:

PRECURSOR, POLYMER, OPTICAL FILM COMPRISING POLYMER, AND DISPLAY DEVICE COMPRISING OPTICAL FILM

Document Type and Number:

WIPO Patent Application WO/2022/145950

Kind Code:

A1

Abstract:

The present invention relates to a polyamide-imide based precursor, a polymer prepared from the precursor, an optical film comprising the polymer, and a display device comprising the optical film. A polymer according to an embodiment of the present invention comprises amide repeating units and imide repeating units that are disposed uniformly and alternately, and an optical film comprising such a polymer can exhibit excellent light transmittance, a low yellow index (Y.I), and superb stability.

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Inventors:

YANG JONG WON (KR)
PARK HYO JUN (KR)
JUNG HAK-GEE (KR)

Application Number:

PCT/KR2021/020020

Publication Date:

July 07, 2022

Filing Date:

December 28, 2021

Export Citation:

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Assignee:

KOLON INC (KR)

International Classes:

C08J5/18; C08G73/10; C08G73/14; G02B1/04

Foreign References:

CN110760062A	2020-02-07
JP2010180292A	2010-08-19
KR20180009651A	2018-01-29
CN112080005A	2020-12-15
KR20200095745A	2020-08-11
KR20170132499A	2017-12-04

Attorney, Agent or Firm:

ASTRAN INT'L IP GROUP (KR)

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