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

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

DOI QR Code

A Study on Liquid Crystal Alignment effects by UV Alignment Method on a Diamond-Like-Carbon Thin Film Surface

Diamond-Like-Carbon 박막표면에 UV 배향법을 이용한 액정 배향 효과에 관한 연구

  • 황정연 (연세대학교 전기전자공학과) ;
  • 조용민 (연세대학교 전기전자공학과) ;
  • 서대식 (연세대학교 전기전자공학과)
  • Published : 2003.03.01

Abstract

We studied the nematic liquid crystal (NLC) aligning capabilities by the UV alignment method on a diamond like carbon (DLC) thin film surface A good LC alignment by UV exposure on the DLC thin film surface at 200${\AA}$ of layer thickness was achieved. Also, a good LC alignment by the UV alignment method on the DLC thin film surface was observed at annealing temperature of 180$^{\circ}C$. However, the alignment defect of the NLC was observed above annealing temperature of 200$^{\circ}C$. Consequently, the good thermal stability of LC alignment by the UV alignment method o the DLC thin film surface can be achieved.

Keywords

File

Download PDF

References

  1. Mol. Cryst. Liq. Cryst. v.213 Generation of pretilt angle in nematic liquid crystal, 5CB, media aligned polyimide films prepared by spin coating and LB techniques : effect of rubbing D. S. Seo;K. Muroi;S. Kobayashi https://doi.org/10.1080/10587259208028733
  2. Jpn. J. Appl. Phys. v.33 no.8B Effects of conjugation of mesogenic core of nematic liquid crystals for polar anchoring energy and surface order parameter on rubbed polyimide films D. S. Seo;N. Yoshida;S. Kobayashi;M. Nishikawa;Y. Yabe https://doi.org/10.1143/JJAP.33.L1174
  3. IEICE Trans. Electron v.E79-C no.8 Alignment control if liquid crystal molecules using photo-dimerization reaction of poly(vinyl-cinnamate) Y. Iimura;S. Kobayashi;T. Hashimoto;T. Sugiyama;K. Katoh
  4. SID '98 Digest paper Polyimide films designed to produce high pretilt angles with a single linearly polarized UV exposure M. Nishikawa;B. Taheri;J. L. West
  5. 전기전자재료학회논문지 v.12 no.10 광중합된 PM4Ch 표면을 이용한 액정 배향 효과 황정연;서대식;서동학;김향율
  6. 전기전자재료학회논문지 v.15 no.3 3가지 종류의 치환기를 함유한 N-(phenyl)maleimide계 광폴리머 표면을 이용한 액정 배향 효과에 관한 연구 황정연;박경순;서대식;김준영;김태호 https://doi.org/10.4313/JKEM.2002.15.3.253
  7. Nature v.411 Atomic beam alignment of material for liquid-crystal displays P. Chaudhari;J. Lacey;J. Doyle;E. Galligan:S. C. Alan;A. Callegarl;G. Hougham;N. D. Lang;P. S. Andry;R. John;K. H. Yang;M. Lu;C. Cal;J. Speidell;S. Purushothaman;J. Ritsko;M. Samnt;J. Stohrt;Y. Nakagawa:Y. Katoh;Y. Saitoh;K. Saka;H. Satoh;S. Odahara;H. Nakano;J. Nskshski;Y. Shiota https://doi.org/10.1038/35075021
  8. SID '97 Digest paper The mechanism of pretilt generation on polarized ultraviolet light aligned polyimide film X. Wang;J. L. West https://doi.org/10.1038/35075021
  9. SID '98 Digest paper Polyimide films designed to produce high pretilt angles with a single linearly polarized UV exposure M. Nishikawa;B. Taheri;J. L. West
  10. SID '96 Digest paper Liquid-crystal alignment by slantwise irradiation of non-polarized UV light on a polyimide layer T. Yamamoto;M. Hasegawa;H. Hatoh
  11. 전기전자재료학회논문지 v.15 no.3 3가지 종류의 치환기를 함유한 N-(phenyl)maleimide 계 광폴리머 표면을 이용한 액정 배향 효과에 관한 연구 황정연;이윤건;서대식;김준영;김태호