Open AccessOne-dimensional surface wrinkling for twisted nematic liquid crystal display based on ultraviolet nanoimprint lithography
Author(s) -
Hae Chang Jeong,
Ju Hwan Lee,
Jeong-Hun Won,
Byeong Yun Oh,
Dong Hyun Kim,
Dong Hoon Lee,
In Ho Song,
Yang Liu,
Dae Shik Seo
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.018094
Subject(s) - materials science , liquid crystal , nanoimprint lithography , ultraviolet , polymer , thermal stability , optics , optoelectronics , lithography , thermal , nanostructure , composite material , nanotechnology , fabrication , chemical engineering , medicine , alternative medicine , physics , pathology , meteorology , engineering
Surface wrinkling method is used to fabricate a 1-dimensional nanostructure. The structure is transferred to an ultraviolet cured polymer which is used as an alignment layer. The anisotropic geometry serves as a guide for aligning liquid crystal molecules uniformly without defects. The TN-LC cell showed a successful LC switching, with a response time of 20.5 ms, and a threshold voltage of 2.00 V. It also exhibited high thermal stability above 180°C. The proposed UV-cured polymers with 1-D nano wrinkle geometry can be a candidate for alternative alignment techniques, for advanced liquid crystal devices with high thermal budgets.