한국정보디스플레이학회:학술대회논문집
- 2008.10a
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- Pages.1577-1579
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- 2008
Control of liquid crystal pretilt angle using polyimide mixture
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Kang, Dae-Seung
(Dept. of Electrical Engineering, Soongsil University)
;
- Lee, Ji-Hoon (Dept. of Physics, Case Western Reserve University) ;
- Rosenblatt, Charles (Dept. of Physics, Case Western Reserve University)
- Published : 2008.10.13
Abstract
A mixture of two different types of polyimide, one having an alkyl side chain and ordinarily used for homeotropic alignment, and the other without a side chain and ordinarily used for planar alignment, is deposited and baked at high temperatures. When the resulting cell is filled with a nematic liquid crystal, it is found that the pretilt angle is a function of the baking temperature or mixing ratio, and can be controlled continuously over the range 0 to 90.