Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2001.11a
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- Pages.350-353
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- 2001
Control of Pretilt Angle using a in-situ Photoalignment Method on Photo-crosslinkable Polymer Surface
광중합 가능한 폴리머 표면에 in-situ 광배향법을 이용한 프리틸트각 제어
Abstract
Aligning capabilities for nematic liquid crystal (NLC) using a in-situ photodimerization method on various Photo-crosslinkable polyimide (PI) based Polymer and blending photopolymer surfaces were studied. High pretilt angle of the NLC can be measured by obliquely polarized UV exposure on a photo-crosslinkable polyimide based polymer surface containing biphenyl (BP), decal (de), and cholesterol (chol) group, respectively. However, the low pretilt angle of the NLC was measured by obliquely polarized UV exposure on the blending photopolymer (PI and cinnamate materials) surfaces. Consequently, the pretilt angle of the NLC generated on the photo-crosslinkable polyimide based polymer surfaces using the in-situ photodimerization method was higher than that of the blending photopolymers.
Keywords
- thematic liquid crystal;
- a photo-crosslinkable polyimide;
- In-situ photodimerization method;
- pretilt angle