Premium
23.2: Twisted Discotic Film Compensated Single‐Domain and Two‐Domain TN LCDs
Author(s) -
Lu Minhua,
Yang K. H.
Publication year - 2000
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 - 10.1889/1.1832952
Subject(s) - polarizer , viewing angle , birefringence , optics , materials science , compensation (psychology) , disclination , stacking , luminance , liquid crystal display , impression , twist , optoelectronics , physics , computer science , liquid crystal , geometry , mathematics , psychology , nuclear magnetic resonance , world wide web , psychoanalysis
A single‐layer twist discotic film with negative birefringence is used to compensate either a single‐domian (1D) TN or a two‐domain (2D) TN with advantages of higher contrast ratio, wider viewing angles, lower operating voltage, faster response times, and lower color‐shift over the uncompensated ones, respectively. The compensation on 2DTN has the added advantage of no extra light leakage at the locations of the disclination lines between two domains at any gray level so that no black matrix is needed at these locations. Further increases in viewing angles are possible by combining the compensation scheme with wide‐viewing‐angle polarizers. The compensation scheme can also be applied to reflective TNs for either direct‐view or projection displays.