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Proceedings Paper

Very High Contrast Liquid Crystal Display (VHC) For Automotive Instruments
Author(s): Yutaka Nakagawa; Tetsuro Matsumoto; Shigeru Matsushita; Yutaka Uchida; Hiroshi Araki
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Paper Abstract

A very high contrast liquid crystal display ( VHC ) was developed. The VHC is based on 3 technologies; light shielding black mask, the positive mode twisted nematic configuration and an inversed driving method. Maximum contrast ratio exceeds 1,000, and thus it realizes a "bleed-through" free dashboard display. The VHC has some additional advantages, such as little temperature dependence in ON-color, fast switching speed and so on. Typical usages of the VHC in the instrument panels are described.

Paper Details

Date Published: 24 October 1988
PDF: 5 pages
Proc. SPIE 0958, Automotive Displays and Industrial Illumination, (24 October 1988); doi: 10.1117/12.947717
Show Author Affiliations
Yutaka Nakagawa, Asahi Glass Electronic Products R&D Center Co., Ltd. (Japan)
Tetsuro Matsumoto, Asahi Glass Electronic Products R&D Center Co., Ltd. (Japan)
Shigeru Matsushita, Optrex Corporation (Japan)
Yutaka Uchida, Optrex Corporation (Japan)
Hiroshi Araki, Optrex Corporation (Japan)

Published in SPIE Proceedings Vol. 0958:
Automotive Displays and Industrial Illumination
B. Jin Chang; Thomas M. Lemons, Editor(s)

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