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Proceedings Paper

Wide-color-gamut and high-brightness WUXGA LCD monitor with color calibrator
Author(s): Hiroaki Sugiura; Hideyuki Kaneko; Shuichi Kagawa; Masahiko Ozawa; Hideki Tanizoe; Hiroshi Ueno; Taro Kimura; Hiroshi Katou
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Paper 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).

Paper Details

Date Published: 17 January 2005
PDF: 8 pages
Proc. SPIE 5667, Color Imaging X: Processing, Hardcopy, and Applications, (17 January 2005); doi: 10.1117/12.585706
Show Author Affiliations
Hiroaki Sugiura, Mitsubishi Electric Corp. (Japan)
Hideyuki Kaneko, Mitsubishi Electric Corp. (Japan)
Shuichi Kagawa, Mitsubishi Electric Corp. (Japan)
Masahiko Ozawa, Mitsubishi Electric Corp. (Japan)
Hideki Tanizoe, NEC Mitsubishi Electric Visual Systems Corp. (Japan)
Hiroshi Ueno, NEC Mitsubishi Electric Visual Systems Corp. (Japan)
Taro Kimura, NEC Mitsubishi Electric Visual Systems Corp. (Japan)
Hiroshi Katou, NEC Mitsubishi Electric Visual Systems Corp. (Japan)

Published in SPIE Proceedings Vol. 5667:
Color Imaging X: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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