Superior electro-optical performance in vertically aligned liquid crystal devices based on aluminum oxide films. Issue 2 (3rd April 2018)

• Record Type: Journal Article
• Authors: Park, Hong-Gyu; Mun, Hyo Young; Jeong, Hae-Chang; Oh, Byeong-Yun; Han, Jeong-Min; Seo, Dae-Shik
• Is Part Of: Soft materials. Volume 16:Issue 2(2018)
• Page Start: 71
• Page End: 76
• Publication Date: 2018-04-03
• Subjects: Al2O3 -- electro-optical characteristics -- liquid crystal alignment -- rubbing process -- vertically aligned cell; Materials science -- Periodicals; 620.11
• DOI: 10.1080/1539445X.2017.1280507
• Languages: English
• ISSNs: 1539-445X

Abstract

ABSTRACT: We achieved vertically aligned (VA) liquid crystals (LCs) on aluminum oxide (Al2 O3 ) films deposited via e-beam evaporation using a rubbing treatment. Uniform and vertical LC alignment was achieved and high thermal stability was obtained using these substrates. By analyzing measurements from optical retardations, we confirm that the LC orientation is adjustable using rubbing treatment. The superior electro-optical characteristics of the VA cells based on Al2 O3 films are measured and compared with those based on polyimide layers, indicating that this approach will allow the fabrication of high-performance, advanced LC displays using a conventional rubbing process.