Premium
P‐145: A Systematic Optimization of Normal‐White STN‐LCDs
Author(s) -
Hurley Shawn,
Yang DengKe,
Shi Jianru,
Mullin Chris
Publication year - 2007
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 - 10.1889/1.2785412
Subject(s) - polarizer , liquid crystal display , contrast ratio , contrast (vision) , compensation (psychology) , materials science , voltage , spectrum analyzer , optics , high contrast , computer science , optoelectronics , physics , engineering , birefringence , electrical engineering , psychology , psychoanalysis
Abstract We report a systematic study to optimize the performance of a normal‐white STN liquid crystal display. We first experimentally characterized the liquid crystal to determine the material parameters. for a cell with a given cell thickness and driving voltage we used computer simulations to determine the polarizer and analyzer angles which optimized the contrast ratio. We then studied the contrast ratio as a function of cell thickness and drive voltage. We also used a compensation film to improve the performance of the STN LCD. Using the theoretical results as guidance, we built STN LCDs and characterized their performances and compared the experimental results with the theoretical results.