Patent Number: 6,804,029

Title: Liquid crystal shutter

Abstract: Disclosed is a liquid crystal shutter that uses as a shutter a liquid crystal panel constructed by sandwiching DHF liquid crystal between a pair of substrates provided with one or more pixel electrodes and one or more counter electrodes, wherein a driving waveform for the panel has a write period comprising two subfields. In each of the subfields, a single pulse is applied to a pixel, the single pulse applied in one subfield being opposite in polarity to the single pulse applied in the other subfield. On the other hand, a constant voltage of 0 V or close to 0 V is applied to the pixel during a period in which neither of the single pulses is applied.

Inventors: Kondoh; Shinya (Nishitokyo, JP), Ohara; Mie (Tokorozawa, JP)

Assignee: Citizen Watch Co., Ltd.

International Classification: G09G 3/36 (20060101); G02F 1/141 (20060101); G02F 1/13 (20060101); H04N 001/460 (); G06K 015/00 (); G03G 015/22 (); G03G 015/28 ()

Expiration Date: 10/12/2012