Investigation on newly designed low resistivity polyimide-type alignment layer for reducing DC image sticking of in-plane switching liquid crystal display. Issue 4 (16th March 2017)

• Record Type: Journal Article
• Authors: Lee, Tae Rim; Kim, Jin Ho; Lee, Seung Hee; Jun, Myung Chul; Baik, Hong Koo
• Is Part Of: Liquid crystals. Volume 44:Issue 4(2017)
• Page Start: 738
• Page End: 747
• Publication Date: 2017-03-16
• Subjects: In-plane switching -- alignment layer -- resistivity -- image sticking; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2016.1239775
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: Soluble polyimide-type alignment layer is widely used in in-plane switching (IPS) liquid crystal display (LCD) because of its excellent reliability owing to high imidisation ratio during long-term driving, high voltage-holding ratio and low ion density. Nevertheless, it exhibits slow direct current (DC) discharging property due to its high resistivity, causing significant DC image-sticking problem. In this study, we doped inorganic salt to control the resistivity of soluble polyimide-type alignment layer and found that this approach reduced DC image sticking greatly without any loss of reliability property in IPS-LCD. Graphical Abstract: