Title:
POLYIMIDE-BASED RESIN FILM, AND DISPLAY DEVICE SUBSTRATE, CIRCUIT BOARD, OPTICAL DEVICE AND ELECTRONIC DEVICE, WHICH USE SAME
Document Type and Number:
WIPO Patent Application WO/2022/108063
Kind Code:
A1
Abstract:
The present invention relates to a polyimide-based resin film, and a display device substrate, a circuit board, an optical device and an electronic device, which use same, the polyimide-based resin film including a polyimide-based resin, which has a polyimide repeating unit synthesized by a reaction between an acid anhydride compound of a specific structure and a diamine compound, wherein the average transmittance at a wavelength of 300-780 nm is 60% or higher and the thickness retardation value at a thickness of 10 ㎛ is 150 nm or less.
Inventors:
LEE MIN WOOK (KR)
PARK CHAN HYO (KR)
PARK CHAN HYO (KR)
Application Number:
PCT/KR2021/012047
Publication Date:
May 27, 2022
Filing Date:
September 06, 2021
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08J5/18; C08G73/10; G02B1/04; G09F9/30
Foreign References:
| KR101796875B1 | 2017-11-10 | |||
| KR20180081434A | 2018-07-16 | |||
| KR20170076101A | 2017-07-04 | |||
| JP2010235641A | 2010-10-21 | |||
| JP2013001899A | 2013-01-07 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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