Photo-configurable embossed liquid crystal alignment layer with high azimuthal anchoring strength

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 415
  • Download : 127
Herein we describe a photo-alignment layer of improved azimuthal anchoring energy comparable to conventional rubbing method. In order to address the inherent low anchoring stability of photo-alignment layer, we applied embossing technique to conventional photosensitive polymer film, based on the cinnamoyl photoreactive groups, to introduce physical micro-groove effect for additional anchoring energy. From this, 2.5 x 10(-4) J/m(2) of azimuthal anchoring energy was achieved, which is considered as synergistic effect from both photoinduced chemical interaction and physical microgroove alignment. In this study, we conducted systematic study on change in anchoring energy as a function of both aspect ratio of embossed pattern and UV exposure dose. We also demonstrated fabrication of sophisticated multi-domain structure of LC cells and discussed theoretical interpretation through LC simulation. (C) 2012 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2012-03
Language
English
Article Type
Article
Keywords

SURFACE ALIGNMENT; DISPLAYS; LITHOGRAPHY; DRIVEN; ANGLES

Citation

OPTICS EXPRESS, v.20, no.6, pp.6835 - 6843

ISSN
1094-4087
URI
http://hdl.handle.net/10203/101675
Appears in Collection
ME-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
Files in This Item
000301877700131.pdf(1.22 MB)Download

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0