Title:
DISPLAY SUBSTRATE POLYIMIDE FILM
Document Type and Number:
WIPO Patent Application WO/2019/093645
Kind Code:
A1
Abstract:
The present invention provides a display substrate polyimide film having: remarkably improved insulation characteristics; inner pores, included in the polyimide film, of which the maximum size is 10 nm or less; and a high maximum dielectric breakdown voltage of 350 V/μm or more. The polyimide film according to the present invention has improved insulation characteristics so as to be capable of suppressing the generation of a current fluctuation of TFTs according to the long-term driving of a TFT device in a display such as an OLED, thereby enabling the deterioration of the contrast of a display to be reduced.
Inventors:
PARK JINYOUNG (KR)
CHOI DANBI (KR)
HONG YE JI (KR)
CHOI DANBI (KR)
HONG YE JI (KR)
Application Number:
PCT/KR2018/010607
Publication Date:
May 16, 2019
Filing Date:
September 11, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08J5/18; C08G73/10; C08L79/08; G02F1/1333
Domestic Patent References:
| WO1991001340A1 | 1991-02-07 |
Foreign References:
| KR20120100897A | 2012-09-12 | |||
| JP2013014727A | 2013-01-24 | |||
| JP2011138683A | 2011-07-14 | |||
| KR20140012270A | 2014-02-03 | |||
| KR20170150726A | 2017-11-13 | |||
| KR20180082241A | 2018-07-18 |
Other References:
See also references of EP 3712200A4
Attorney, Agent or Firm:
KIM, Aera (KR)
Download PDF: