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15.1: Invited Paper: A 46‐inch TFT‐LCD HDTV Technology with Color Management and Image Quality Enhancement
Author(s) -
Liu C. T.,
Lin Yu Chieh,
Chen P. L.,
Hong Hong Jye,
Kuo TaiYu,
Lin TungTsun,
Chiang M. F.,
Wu YangEn,
Tseng Andrew,
Wu Allen C. K.,
Hsu Jerry,
Chou Kelvin,
Lee Kuochih,
Lyu LiRu,
Wu Kuan Yi,
Li Huan Hsin,
Chu Ta Hsin,
Hsieh Brian,
Li Shengzen,
Wey Chinder,
Wu YungZhi,
Chen YaFang,
Kuo Po Yu,
Yu H. L.,
Cheng Faery,
Cheng K. C.,
Yang Jimmy C. K.,
Lin Ting Li,
Yang C. C.,
Chang WenShou,
Lee Richard C. Y.,
Fu Samuel,
Weng Vincent,
Chen Hui Chang,
Liao Shih Hong,
Liao Y. J.,
Wang Arex
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 - 10.1889/1.1821390
Subject(s) - gamut , backlight , ntsc , liquid crystal display , color management , color gel , brightness , color filter array , computer graphics (images) , rgb color model , computer vision , high definition television , artificial intelligence , computer science , thin film transistor , color image , optics , materials science , color space , image processing , optoelectronics , image (mathematics) , physics , telecommunications , layer (electronics) , composite material
We have developed a 46‐inch TFT‐LCD HDTV (high definition television — 1080p) with digital color management and image enhancement technologies. The panel uses premium MVA (multi‐domain vertical alignment liquid crystals, and is fabricated on generation‐5 glass substrates with ODF process ( o ne d rop f illed liquid crystal process). It adopts the true wide format of 16:9. The viewing angle at a CR (contrast ratio) of 10:1 is greater than 170° in all directions. In the normal direction, CR is above 800. For conventional color management and image quality enhancement, we optimized the color performance between color‐filters and backlight units as well as the properties of VA LC and polarizers. The outcomes include high color gamut (75% of NTSC) and brightness (> 600 nits). More advanced digital color management techniques include the application of vivid color mapping, and gamma correction by signal processing. For the quality of fast moving pictures, we have developed a new driving approach in conjunction with advanced VA LC's to achieve a response speed of 8 ms in average. The new approach compensates the slow transition between gray levels.