전자공학회논문지D (Journal of the Korean Institute of Telematics and Electronics D)
- 제34D권3호
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- Pages.114-122
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- 1997
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- 1226-5845(pISSN)
SHG을 이용한 LCD 배향막 표면 특성분석
Surface characterization of polyimides for LCDs by second-harmonic generation technique
초록
The surface characteristics of polymers for liquid crystal alignment are studied by optical second-harmonic genertion (SHG) tecnique. Using SHG technique, the LC monolayers on rubbed polymer have already been studied. But, in this paper, the SH signals of polymer were observed and the orientational distribution of oriented polymer was studied. Te SHG experiments for side-chain type and main-chain type polymers are carried out as a function of rubbing strength. The orentational distribution of surface molecules of polymers is compared with the LC pretilt angle measured by the crystal rotation method.
키워드