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P‐199: Achromatic Reduction of Off‐Axis Light Leakage in LCDs by Self‐Compensated Phase Retardation (SPR) Film
Author(s) -
Yang YoungChol,
Yang DengKe
Publication year - 2008
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 - 10.1889/1.3069577
Subject(s) - achromatic lens , leakage (economics) , optics , materials science , wavelength , optoelectronics , liquid crystal , liquid crystal display , dispersion (optics) , compensation (psychology) , phase compensation , oblique case , physics , psychology , linguistics , philosophy , psychoanalysis , economics , macroeconomics , phase noise
Wavelength dispersion of refractive indices of compensation films causes the problems of light leakage and color shift at oblique incident angles in the black state of liquid crystal displays. We propose a self‐compensated phase retardation (SPR) film reducing the light leakage stemming from the wavelength dispersion of compensation films. Numerical calculations show that SPR films suppress the leaked light significantly more than the state‐of‐art compensation scheme used in vertical alignment mode liquid crystal displays.