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The effect of Ion Beam modification of Polyimide surface on alignment properties of liquid crystals  

Cho, Seong-Jin (Department of Physics, Kyungsung University)
Kim, Chan-Soo (Department of Physics, Kyungsung University)
Roh, Jin-A (Department of Physics, Kyungsung University)
Gwag, Jin-Seog (Department of Physics, Kyungsung University)
Kim, Jae-Chang (Department of Electronics Engineering, Pusan National University)
Publication Information
Journal of the Korean Vacuum Society / v.12, no.S1, 2003 , pp. 107-112 More about this Journal
Abstract
The alignment effect of liquid crystals on Polyimide surfaces bombarded by a low energy argon ion beam and the effect of pretilt angle on viewing characteristics of an LCD cell are discussed. The unidirectional out-of-plane liquid crystal tilt angle is varied with various ion beam irradiation conditions, such as the energy of the incident ions, the angle of incidence and exposure time. As low pretilt angle is profitable for wider viewing property, LCD cell with ion beam modified Polyimide layer show wider viewing characteristics.
Keywords
Polyimide film; Ion-beam modification;
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