Method of driving liquid crystal displays

Details Method of driving liquid crystal displays Method of driving liquid crystal displays

1991-07-02

1992-04-21

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

340784, 340752, G02F 113

Patent

active

051073544

ABSTRACT:
A method of conserving the battery power supply of a liquid crystal display including a ferroelectric liquid crystal layer having a bistability characteristic, and an electrode arrangement corresponding to an m x n matrix of picture elements where all the picture elements are elements of a display picture to be displayed by the display where first electric fields are applied from the electrode arrangement for a first period of time to the ferroelectric liquid crystal layer to display a first display picture. The first electric fields are then removed for a second period of time greater than the first period of time whereby the first display picture continues to be displayed due to the bistability characteristic of the ferroelectric liquid crystal layer; and then second electric fields are applied to the ferroelectric liquid crystal display to change the picture displayed by the display from the first display picture to a second display picture.

REFERENCES:
patent: 4342987 (1982-08-01), Rossin
patent: 4844590 (1989-07-01), Okada et al.
patent: 4909607 (1990-03-01), Ross
patent: 4930875 (1990-06-01), Inoue et al.
patent: 4958149 (1990-09-01), Harvey
patent: 5011269 (1991-04-01), Wakita et al.

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