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P‐91: TFT Substrate Birefringence Induced Asymmetrical Viewing Angle and Compensation Methods
Author(s) -
Ong Hiap L.,
Woodard Ollie,
Li Shu
Publication year - 2004
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 - 10.1889/1.1831050
Subject(s) - polarizer , birefringence , viewing angle , thin film transistor , materials science , substrate (aquarium) , compensation (psychology) , optics , optoelectronics , liquid crystal display , composite material , physics , psychology , oceanography , layer (electronics) , psychoanalysis , geology
Thin‐film transistor (TFT) processes for small pixel geometries can induce optical birefringence effects and change the viewing angle from symmetrical to asymmetrical. We experimentally identified the TFT substrate as the source of the birefringence and developed four methods to compensate the added optical birefringence effects to restore the symmetrical viewing angle. We also developed two special wide viewing angle polarizers with Fuji Film wide viewing angle film, and special compensation films to compensate the TFT substrate's birefringence.