Liquid crystal shutter
AssigneeCitizen Watch Co., Ltd.
InventorsShinya Kondoh, Mie Ohara
Life of this patent
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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.
Claims16
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 said panel has a write period comprising two subfields, and wherein in each of said 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, and a constant voltage of 0 V or close to 0 V is applied to the pixel during a period in which neither of said single pulses is applied.
A liquid crystal shutter that uses as a shutter a liquid crystal panel constructed by sandwiching V-shaped antiferroelectric 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 said panel has a write period comprising two subfields, and wherein in each of said 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, and a constant voltage of 0 V or close to 0 V is applied to the pixel during a period in which neither of said single pulses is applied.
A liquid crystal shutter that uses as a shutter a liquid crystal panel constructed by sandwiching monostable ferroelectric 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 said panel has a write period comprising two subfields, and wherein a first single pulse for making a pixel transparent to light is applied at the end of the first subfield, a second single pulse, opposite in polarity to said first single pulse, for not making the pixel transparent to light is applied at the beginning of the second subfield, and a constant voltage of 0 V or close to 0 V is applied to the pixel during a period in which neither of said single pulses is applied.
A liquid crystal shutter that uses as a shutter a liquid crystal panel constructed by sandwiching monostable ferroelectric 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 said panel has a write period comprising two subfields, and wherein a pair of pulses consisting of a first single pulse for making a pixel transparent to light and a second single pulse, opposite in polarity to said first single pulse, for not making the pixel transparent to light are applied in each of said subfields, and a constant voltage of 0 V or close to 0 V is applied to the pixel during a period in which neither of said pairs of single pulses is applied.
Dependencies are inferred from the claim text.