Sharp Kabushiki Kaisha Corporation

Hiroshi Gouda

Makoto Shiomi

Mikio Katayama

Mitsuhiro Koden

Akira Tagawa

Takaji Numao

Naofumi Kondo

Hirofumi Katsuse

Hitoshi Takeda

Masayuki Katakami

A liquid crystal display includes a liquid crystal cell including a pair of substrates opposite to each other, each substrate having an electrode film and an orientation control layer thereon, and a ferroelectric liquid crystal filled between the substrates; and a pair of polarizing plates which are provided opposite to each other in the state of 'cross nicol' on both sides of the liquid crystal cell; the ferroelectric liquid crystal being bistable in the liquid crystal cell, the polarizing plates being oriented in such a manner that one of their polarizing directions conforms to one of extinction positions of the ferroelectric liquid crystal under no electric field, the liquid crystal cell being applied with an alternating voltage for changing which has a positive portion which gives an apparent tilt angle from one stable state, and a negative portion which gives an apparent tilt angle relative to the other stable state, resulting in display with gray scale.

Gradation driving method for bistable ferroelectric liquid crystal using

Growing community of inventors

Tenri, Japan

Hiroshi Gouda