Wide-color-gamut and high-brightness WUXGA LCD monitor with color calibrator

Hiroaki Sugiura; Hideyuki Kaneko; Shuichi Kagawa; Masahiko Ozawa; Hideki Tanizoe; Hiroshi Ueno; Taro Kimura; Hiroshi Katou

doi:10.1117/12.585706

17 January 2005 Wide-color-gamut and high-brightness WUXGA LCD monitor with color calibrator

Hiroaki Sugiura, Hideyuki Kaneko, Shuichi Kagawa, Masahiko Ozawa, Hideki Tanizoe, Hiroshi Ueno, Taro Kimura, Hiroshi Katou

Author Affiliations +

Proceedings Volume 5667, Color Imaging X: Processing, Hardcopy, and Applications; (2005) https://doi.org/10.1117/12.585706
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

Authors have developed a wide color gamut and high brightness WUXGA LCD monitor with color calibrator. This monitor uses three color LED, including red, green and blue, as the light source for the backlighting. This framework involves a problem that the chromaticity points of white color (white balance) shifts over time due to the changes in the wavelength of emitted beams and emission luminance (efficiency) of the LEDs, which work as the light source, depending on the temperature． It also has a tendency to deteriorate in color non-uniformity performance to some extent because of the variation of luminance of individual LED elements and other factors compared to the backlighting of light source of conventional Cold Cathode Fluorescent light (CCFL). Authors have develop a color calibrator that has: 1) a feedback control circuit via optical sensors in which backlighting is incorporated, 2) a color non-uniformity control through modulation of image signals, and 3) a gamma-correction function, in order to solve this problem and to enable introduction of this device into applications that require strict color control. This research was organized in part by the New Energy and Industrial Technology Development Organization, Japan (NEDO).

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Hiroaki Sugiura, Hideyuki Kaneko, Shuichi Kagawa, Masahiko Ozawa, Hideki Tanizoe, Hiroshi Ueno, Taro Kimura, and Hiroshi Katou "Wide-color-gamut and high-brightness WUXGA LCD monitor with color calibrator", Proc. SPIE 5667, Color Imaging X: Processing, Hardcopy, and Applications, (17 January 2005); https://doi.org/10.1117/12.585706

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