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P‐105: Out‐of‐Plane Alignment Properties of Nematic Liquid Crystals on Polyimide Surface Bombarded by Ar Ion Beam
Author(s) -
Kang Dong Jin,
Gwag Jin Seog,
Kang Jin Woo,
Yoon TaeHoon,
Kim Jae Chang,
Kim Hee,
Cho Seong Jin
Publication year - 2003
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 - 10.1889/1.1832353
Subject(s) - polyimide , rubbing , ion beam , materials science , liquid crystal , ion , beam (structure) , liquid crystal display , tilt (camera) , optics , optoelectronics , chemistry , composite material , organic chemistry , layer (electronics) , mechanical engineering , physics , engineering
Polyimide surfaces bombarded by a low energy argon ion beam align liquid crystals parallel to ion beam exposure direction. By ion beam conditions, such as the energy of the incident ions, the angle of incidence and exposure time, the unidirectional out‐of‐plane liquid crystal (LC) tilt angle is changed. These are related with the remaining π‐bond of polyimide which is not destroyed by ion beam bombardment. For application in LCDs, unit cells fabricated by ion beam alignment method are compared with one which manufactured by the rubbing method. And The TN cell fabricated by ion beam alignment method has enough retention time to apply to TFT(Thin Film Transitor) LCDs