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27.4: A Low Temperature Poly‐Si TFT Liquid Crystal Light Valve (LCLV) with a Novel Light‐Shielding Structure for High Performance Projection Displays
Author(s) -
Tomihari Y.,
Yoshinaga K.,
Sekine H.,
Sugimoto M.,
Okumura T.,
Seko N.,
Takada N.,
Okumura H.,
Shiota K.,
Hirata K.,
Matsunaga N.,
Sera K.,
Okumura F.
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 - 10.1889/1.1821420
Subject(s) - electromagnetic shielding , materials science , contrast ratio , thin film transistor , liquid crystal display , optoelectronics , contrast (vision) , leakage (economics) , compensation (psychology) , high contrast , projection (relational algebra) , optics , composite material , computer science , physics , psychology , layer (electronics) , algorithm , psychoanalysis , economics , macroeconomics
We have successfully achieved a very high contrast ratio of over 700:1 without attaching optical compensation films. This good contrast ratio is much higher than that for commercially available projection displays whose typical contrast ratios are about 400:1. A novel light‐shielding structure has been employed in order to realize the excellent performance that has been brought by suppressing low photo leakage current in the TFTs for the LCLVs.