Antiferroelectric liquid crystal display and method of driving the same
AssigneeCitizen Watch Co., Ltd.
InventorShinya Kondoh
Life of this patent
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Abstract
An antiferroelectric liquid crystal panel, having an antiferroelectric liquid crystal between a pair of substrates, which comprises a driving circuit adapted to output a layer structure controlling voltage waveform having a frequency of 1 Hz to 100 Hz and a voltage in the range of +10 V to +50 V or −10 V to −50 V, for an optional length of time.
Claims12
An antiferroelectric liquid crystal panel, having an antiferroelectric liquid crystal between a pair of substrates, which comprises a driving circuit adapted to output:
- a layer structure controlling voltage waveform having a frequency of 1 Hz to 100 Hz and a voltage in the range of +10 V to +50 V or −10 V to −50 V, which changes a layer structure of the antiferroelectric liquid crystal from a chevron structure to a bookshelf structure;
- and
- a display driving voltage waveform for normal display,
- wherein the driving circuit comprises switches which switch the output from the display driving voltage waveform to the layer structure controlling voltage waveform for an optional length of time, and wherein
- the switches are switched at predetermined intervals of time, or are switched in accordance with information from a temperature sensor provided with the liquid crystal panel.
A method of driving an antiferroelectric liquid crystal panel having an antiferroelectric liquid crystal between a pair of substrates, wherein
- a display driving voltage waveform for normal display is output, and
- the display driving voltage waveform is switched for an optional length of time to a layer structure controlling voltage waveform having a frequency of 1 Hz to 100 Hz and a voltage in the range of +10 V to +50 V or −10 V to −50 V, which changes a layer structure of the antiferroelectric liquid crystal from a chevron structure to a bookshelf structure,
- wherein the display driving waveform is switched to the layer structure controlling voltage waveform at predetermined intervals of time, or is switched in accordance with information from a temperature sensor provided with the liquid crystal panel.
Dependencies are inferred from the claim text.