Liquid crystal display device having protrusions on the electrodes
First Claim
1. A liquid crystal display device, comprising:
- a pair of oppositely disposed substrates each having a plurality of opposing electrodes, and a ferroelectric liquid crystal disposed between the substrates so as to form a plurality of pixels each composed by a combination of a pair of the opposing electrodes and the ferroelectric liquid crystal disposed therebetween;
wherein each pixel is provided with regions of different polarity inversion threshold voltages, and at least one of said pair of opposing electrodes is provided with a plurality of regions having island-shaped unevennesses at different densities including a region with a higher density of unevennesses corresponding to a region of a lower polarity inversion threshold voltage and a region with a lower density of unevennesses corresponding to a region of a higher polarity inversion threshold voltage.
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Abstract
A liquid crystal display device is constituted by a pair of oppositely disposed substrates each having a plurality of opposing electrodes, and a ferroelectric liquid crystal disposed between the substrates so as to form a plurality of pixels each composed by a combination of a pair of the opposing electrodes and the ferroelectric liquid crystal disposed therebetween. Each pixel is provided with regions of different polarity inversion threshold voltages, and at least one of the pair of opposing electrodes is provided with a plurality of regions having unevennesses at different densities including a region with a higher density of unevennesses corresponding to a region of a lower polarity inversion threshold voltage and a region with a lower density of unevennesses corresponding to a region of a higher polarity inversion threshold voltage.
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Citations
18 Claims
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1. A liquid crystal display device, comprising:
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a pair of oppositely disposed substrates each having a plurality of opposing electrodes, and a ferroelectric liquid crystal disposed between the substrates so as to form a plurality of pixels each composed by a combination of a pair of the opposing electrodes and the ferroelectric liquid crystal disposed therebetween; wherein each pixel is provided with regions of different polarity inversion threshold voltages, and at least one of said pair of opposing electrodes is provided with a plurality of regions having island-shaped unevennesses at different densities including a region with a higher density of unevennesses corresponding to a region of a lower polarity inversion threshold voltage and a region with a lower density of unevennesses corresponding to a region of a higher polarity inversion threshold voltage. - View Dependent Claims (2, 3, 4)
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5. A liquid crystal display device, comprising a pair of opposing electrodes and a ferroelectric liquid crystal disposed between the opposing electrodes;
wherein at least one of the opposing electrodes is provided with a means for causing a lowering in polarity inversion threshold voltage of the ferroelectric liquid crystal in the form of a line, and at least one of the opposing electrodes is provided with island-shaped unevenesses disposed in a line as a means for causing a change in shape of a polarity-inverted region in direction of the line of lowered polarity inversion threshold voltage.
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6. A liquid crystal display device, comprising:
- a pair of oppositely disposed substrates each having a plurality of opposing electrodes, and a chiral smectic liquid crystal disposed between the substrates so as to form a plurality of pixels each composed by a combination of a pair of the opposing electrodes and the chiral smectic liquid crystal disposed therebetween;
wherein each pixel is provided with regions of different polarity inversion threshold voltages, and at least one of said pair of opposing electrodes is provided with a plurality of regions having unevennesses at different densities including a region with a higher density of unevennesses corresponding to a region of a lower polarity inversion threshold voltage and a region with a lower density of unevennesses corresponding to a region of a higher polarity inversion threshold voltage, and the unevennesses comprise projections having substantially equal heights. - View Dependent Claims (7, 8, 9, 10, 11)
- a pair of oppositely disposed substrates each having a plurality of opposing electrodes, and a chiral smectic liquid crystal disposed between the substrates so as to form a plurality of pixels each composed by a combination of a pair of the opposing electrodes and the chiral smectic liquid crystal disposed therebetween;
- 12. A liquid crystal display device, comprising a pair of opposing electrodes and a chiral smectic liquid crystal disposed between the opposing electrodes, wherein at least one of the opposing electrodes is provided with a means for causing a lowering in polarity inversion threshold voltage of the chiral smectic liquid crystal in the form of a line, and at least one of the opposing electrodes is provided with a means for causing a change in shape of a polarity-inverted region in direction of the line of lowered polarity inversion threshold voltage, wherein said means for causing a lowering in polarity inversion threshold voltage comprises a plurality of projections having substantially equal heights.
Specification