Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지

Liquid Crystal Aligning Capabilities Using the in-situ Photo-alignment Method on Photo-crosslinkable Polymer Surface

광중합 가능한 폴리머 표면에 in-situ 광배향법을 이용한 액정배향특성

  • 황정연 (연세대학교 전기·전자 공학과) ;
  • 정은아 (연세대학교 전기·전자 공학과) ;
  • 서대식 (연세대학교 전기·전자 공학과) ;
  • 정재형 (인제대학교 물리학과) ;
  • 한은주 (수원대학교 물리학과)
  • Published : 2001.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Aligning capabilities for nematic liquid crystal (NLC) using a in-situ photodimerization method on various Photo-crosslinkable Polyimide (Pl) based polymer and blending photopolymer surfaces were investigated. 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), decyl (de), and cholesteryl (chol) group, respectively. However, the low pretilt angle of the NLC was measured by obliquely polarized UV exposure on the blending photopolymer (Pl 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

References

  1. Jpn. J. Appl. Phys. v.32 Surface-induced parallel alignment of liquid crystals by linearly polarized photopolymers M. Schadt;K. Schmitt;V. Kozinkov;V. Chigrinov
  2. IDW 97 New photo alignment materials containing chalcone structures Y. Makita;T. Ogawa;S. Kimura;S. Nakata;M. Kimura;Y. Matsuki;Y. Takeucchi
  3. Macromolecules v.30 Photoreactivity of polymers with regioisomeric cinnamate side chains and their ability to regulate liquid crystal alignment K. Ichimura;Y. Akita;H. Akiyama;K. Kudo;Y. Hayashi
  4. 전기전자재료학회논문지 v.12 no.7 광중합된 PCEMA 표면을 이용한 광배향 TN-LCD의 전기광학특성 황정연;서대식;곽희로;서동학
  5. 전기전자재료학회논문지 v.13 no.1 폴리이미드 소성 시에 UV 광조사를 이용한 프리틸트 발생에 관한 연구 서대식;김형규
  6. 전기전자재료학회논문지 v.13 no.11 수직배향용 폴리이미드의 소성시에 UV조사를 이용한 프리틸트각 제어 황정연;서대식;한은주;김재형
  7. Jpn. J. Appl. Phys. v.39 Generation of pretilt angle for nematic liquid crystal using an in-situ photo alignment method on polymersurfaces D.-S.Seo;H.-K.Kim