Title:
POLYIMIDE PRECURSOR FOR DISPLAY SUBSTRATE, POLYIMIDE FILM FOR DISPLAY SUBSTRATE, AND DISPLAY SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2023/167326
Kind Code:
A1
Abstract:
Provided is a polyimide precursor for a display substrate, said precursor having the structural units represented by general formula (1) and including a group containing an acidic group as at least some of a group represented by X1 in general formula (1), a group represented by Y1 in general formula (1), and a terminal group, the content of the acidic group being at least 15×10−3. (In general formula (1): X1 is a tetravalent aromatic group or an aliphatic group; Y1 is a divalent aromatic group; R1 and R2 are independently of each other a hydrogen atom, a C1-6 alkyl group, or a C3-9 alkylsilyl group.)
Inventors:
ADACHI TAIGA (JP)
MIURA NORIO (JP)
HONMA SOUSUKE (JP)
IIZUMI NOBU (JP)
INOUE SHOHEI (JP)
HISANO NOBUHARU (JP)
MIURA NORIO (JP)
HONMA SOUSUKE (JP)
IIZUMI NOBU (JP)
INOUE SHOHEI (JP)
HISANO NOBUHARU (JP)
Application Number:
PCT/JP2023/008161
Publication Date:
September 07, 2023
Filing Date:
March 03, 2023
Export Citation:
Assignee:
UBE CORP (JP)
International Classes:
H05K1/03; C08G73/10
Domestic Patent References:
| WO2021070912A1 | 2021-04-15 | |||
| WO2021033482A1 | 2021-02-25 | |||
| WO2019146611A1 | 2019-08-01 |
Foreign References:
| JP2017080901A | 2017-05-18 | |||
| JP2020063443A | 2020-04-23 |
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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