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P‐144: Control of Liquid Crystal Director through Defined Pretilt Angle in Vertical Alignment Mode Surrounded by Polymer Wall
Author(s) -
Kim Sung Min,
Kim Sang Gyun,
Kim Youn Sik,
Lee Hee Kyu,
Lee MyongHoon,
Lee Gi Dong,
Lyu Jae Jin,
Kim Kyeong Hyeon,
Lee Seung Hee
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785411
Subject(s) - homeotropic alignment , liquid crystal , materials science , mesogen , polymer , biasing , voltage , liquid crystal display , fabrication , optics , azimuth , optoelectronics , composite material , liquid crystalline , physics , quantum mechanics , medicine , alternative medicine , pathology
Abstract We proposed vertical alignment liquid crystal devices (VALCDs) in which the vertically aligned LC is surrounded by polymer wall, named locked‐super homeotropic (LSH) device. Although the device has advantages of wide‐viewing angle, spacer‐free and simple fabrication, it exhibited relatively slow rising response time due to undefined azimuthal tilting direction with bias voltage. To resolve the problem, we fixed pretilt angle of VA using the polymerization of reactive mesogen (RM) with bias voltage. Conclusively, dynamic stability of LC directors is improved, exhibiting a fast response time.