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P‐104: Bistable Nano‐structured Alignment Surface by Nanoimprint Lithography
Author(s) -
Lee ChungYung,
Tseng ManChun,
Ho TszKin,
Ho Jacob YeukLung,
Kwok HoiSing
Publication year - 2014
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/j.2168-0159.2014.tb00363.x
Subject(s) - nanoimprint lithography , bistability , materials science , groove (engineering) , lithography , nano , fabrication , stacking , surface (topology) , liquid crystal , nanotechnology , polymer , optoelectronics , optics , geometry , physics , composite material , medicine , alternative medicine , mathematics , pathology , nuclear magnetic resonance , metallurgy
A novel kind of nano‐structured alignment surface is proposed and demonstrated. Such alignment surface has bistable azimuthal alignment directions for liquid crystal molecules. The new alignment surface has a structure of stacking a photo‐aligned polymer on top of a nano‐sized groove surface with different azimuthal alignment directions. The fabrication of the nano‐sized groove is based on nano‐imprint lithography. Hence, the size and depth are fixed and controllable; in addition, no random process is involved. The alignment surface is robust, highly reproducible and suitable for mass manufacturing. Such alignment surface can be applied to fabricate π/2 bistable twisted nematic (π/2‐BTN) display which has better optical performances than the traditional π‐BTN display.