Title:
METHOD FOR PREPARING DISPLAY SCREEN COVER PLATE, DISPLAY SCREEN COVER PLATE, AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/241481
Kind Code:
A1
Abstract:
Disclosed are a method for preparing a display screen cover plate, a display screen cover plate, and a display apparatus. The preparation method comprises: subjecting a dianhydride monomer to a condensation reaction with a first diamine monomer and a second diamine monomer to obtain a polyimide acid; reacting the polyimide acid with a dehydrating agent and a catalyst to obtain a polyimide polymer; dissolving the polyimide polymer by means of a solvent to obtain a polymer solution; and coating the polymer solution on a substrate to form a film and stripping the film off to obtain the display screen cover plate, wherein the dianhydride monomer has a benzene ring structure and a fluorine-containing group connected to the benzene ring structure, the first diamine monomer has a pyridine structure, and the second diamine monomer has a benzene ring structure. The cover plate prepared according to the preparation method of an embodiment of the present disclosure has excellent hardness, high transparency, and high modulus, thereby greatly improving the impact resistance thereof.
Inventors:
YUAN WEILIANG (CN)
TSAI PAOMING (CN)
ZHANG XIONGNAN (CN)
DU SHUANG (CN)
TSAI PAOMING (CN)
ZHANG XIONGNAN (CN)
DU SHUANG (CN)
Application Number:
PCT/CN2023/099423
Publication Date:
December 21, 2023
Filing Date:
June 09, 2023
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
C08G73/10; C08J5/18; C08L79/08; G09F9/33
Domestic Patent References:
| WO2015129553A1 | 2015-09-03 |
Foreign References:
| CN114957661A | 2022-08-30 | |||
| CN108472933A | 2018-08-31 | |||
| CN112646182A | 2021-04-13 | |||
| CN105061302A | 2015-11-18 | |||
| CN110003470A | 2019-07-12 | |||
| CN108822295A | 2018-11-16 |
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF:
Previous Patent: ANTI-PD-L1, VEGF AND EGFR TRISPECIFIC ANTIBODY AND USE THEREOF
Next Patent: MAN-MACHINE DIALOGUE METHOD, DEVICE AND SYSTEM
Next Patent: MAN-MACHINE DIALOGUE METHOD, DEVICE AND SYSTEM