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IPS‐mode dynamic LCD‐TV realization with low black luminance and high contrast by adaptive dynamic image control technology
Author(s) -
Oh E. Y.,
Baik S. H.,
Sohn M. H.,
Kim K. D.,
Hong H. J.,
Bang J. Y.,
Kwon K. J.,
Kim M. H.,
Jang H.,
Yoon J. K.,
Chung I. J.
Publication year - 2005
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2012608
Subject(s) - contrast (vision) , citation , luminance , computer science , realization (probability) , mode (computer interface) , image (mathematics) , computer graphics (images) , artificial intelligence , world wide web , human–computer interaction , mathematics , statistics
— In this paper, an active backlight control technology and a data‐processing algorithm has been developed to improve the image quality in IPS‐mode LCD TVs. The image‐blinking problem caused by repeatedly abrupt changes in the backlight luminance was solved by using algorithms [Fba (flexible‐boundary algorithm) and Cfa (cumulative feedback algorithm)] and an optimized number of backlight dimming steps based on human perception. In the IPS‐mode 42‐in. TFT‐LCD panel, the dynamic contrast ratio can be more than twice the typical level by means of a lower black luminance and a higher white luminance. Additionally, the power consumption and LCD temperature were lowered.