Very High Contrast Liquid Crystal Display (VHC) For Automotive Instruments

Yutaka Nakagawa; Tetsuro Matsumoto; Shigeru Matsushita; Yutaka Uchida; Hiroshi Araki

doi:10.1117/12.947717

24 October 1988 Very High Contrast Liquid Crystal Display (VHC) For Automotive Instruments

Yutaka Nakagawa, Tetsuro Matsumoto, Shigeru Matsushita, Yutaka Uchida, Hiroshi Araki

Proceedings Volume 0958, Automotive Displays and Industrial Illumination; (1988) https://doi.org/10.1117/12.947717
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

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.

Citation Download Citation

Yutaka Nakagawa, Tetsuro Matsumoto, Shigeru Matsushita, Yutaka Uchida, and Hiroshi Araki "Very High Contrast Liquid Crystal Display (VHC) For Automotive Instruments", Proc. SPIE 0958, Automotive Displays and Industrial Illumination, (24 October 1988); https://doi.org/10.1117/12.947717

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