Liquid crystal display capable of displaying grey tone

Details Liquid crystal display capable of displaying grey tone Liquid crystal display capable of displaying grey tone

1987-12-02

1989-08-29

Miller, Stanley D.

350341, 350339R, G02F 113

Patent

active

048611433

ABSTRACT:
A liquid crystal display of the chiral smectic type is caused to have grey scales, by applying a voltage of an intermediate level to the liquid crystal. Within each picture element of the display, there are a number of domains of the liquid crystal layer, some being transparent while the other being opaque rendering grey tone to the picture element.

REFERENCES:
patent: 4634228 (1987-01-01), Iwasaki et al.
patent: 4648691 (1987-03-01), Oguchi et al.
patent: 4712877 (1987-12-01), Okada et al.
patent: 4725129 (1988-02-01), Kondo et al.
patent: 4765720 (1988-08-01), Toyono et al.
patent: 4796980 (1989-01-01), Kaneko et al.
Yoshino et al. "New Electro Optical Effects in Ferroelectric Liquid Crystals", Appl. Phys., vol. 18 supplement 18-1, pp. 427-433, 1979.
Pelzl et al., Mol. Cryst. Liq. Cryst., vol. 53, pp. 167-180, 1979.

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