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Influence of spontaneous polarization and polyimide surface treatment on layer tilt angle in SSFLC cells
Author(s) -
Okada Hiroyuki,
Ninomiya Norihiro,
Murashiro Katsuyuki,
Onnagawa Hiroyoshi,
Miyashita Kazuo
Publication year - 1993
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1984871
Subject(s) - liquid crystal , ferroelectricity , polyimide , tilt (camera) , materials science , polarization (electrochemistry) , optics , layer (electronics) , liquid crystal display , viewing angle , condensed matter physics , composite material , optoelectronics , chemistry , physics , geometry , dielectric , mathematics
— The influence of the spontaneous polarization of liquid‐crystal materials and polyimide surface treatments on layer tilt angle in surface‐stabilized ferroelectric liquid‐crystal (SSFLC) cells has been studied by x‐ray diffraction. For the case of liquid‐crystal molecules with the same core structure, the layer tilt angle is not influenced by the magnitude of the spontaneous polarization of the liquid crystals (P s ). Three kinds of polyimides which result in different pre‐tilt angles for the typical nematic material result in the same layer tilt angle for the ferroelectric liquid‐crystal materials. The layer tilt angle vs. molecular tilt angle characteristics are expressed by a universal straight line and its slope is less than unity.