Title:
ELECTROCHROMIC POLYAMIC ACID MATERIAL, PREPARATION METHOD THEREFOR, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/232777
Kind Code:
A1
Abstract:
Provided by the present invention are an electrochromic polyamic acid material, a preparation method therefor, and a display device. The molecular structure of the electrochromic polyamic acid material comprises oligoaniline and carbazole triphenylamine. The oligoaniline is an electrochemically sensitive group; and the carbazolyl triphenylamine is used as a fluorescent emission group. The electrochromic polyamic acid material is an electrically controlled fluorescent polymer. The fluorescence strength of the electrochromic polyamic acid material undergoes reversible fluorescence conversion as the applied voltage changes due to an oxidation-reduction reaction of the oligoaniline occurring under different voltages, which results in the mutual conversion of a benzene ring and a quinone ring in the molecular structure, and generating or eliminating an electron/energy transfer path between a fluorescent emission element, thereby achieving the electrically controlled fluorescence properties of the electrochromic polyamic acid material.
Inventors:
WANG YAMIN (CN)
Application Number:
PCT/CN2019/091186
Publication Date:
November 26, 2020
Filing Date:
June 14, 2019
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C08G73/10; G02F1/15
Foreign References:
| CN108822297A | 2018-11-16 | |||
| CN108586741A | 2018-09-28 | |||
| KR20160122432A | 2016-10-24 |
Other References:
YAN, YING: "Synthesis and properties of fluorescent polyamic acid based on oligoanilines", CHINA MASTER’S THESES FULL-TEXT DATABASE, ENGINEERING TECHNOLOGY I, no. 01, 15 January 2019 (2019-01-15), DOI: 20200219154340X
Attorney, Agent or Firm:
ESSEN PATENT & TRADEMARK AGENCY (CN)
Download PDF:
Previous Patent: DISPLAY
Next Patent: CROSSLINKING TYPE POLYIMIDE, POLYIMIDE THIN FILM AND PREPARATION METHOD THEREFOR, AND OLED DEVICE
Next Patent: CROSSLINKING TYPE POLYIMIDE, POLYIMIDE THIN FILM AND PREPARATION METHOD THEREFOR, AND OLED DEVICE