Liquid crystal display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorRumo Satake
Life of this patent
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Abstract
The leakage of light and the disclination occur at the ends of the pixel electrodes where the equipotential lines bend toward the pixel electrodes. A dielectric 207 having a high dielectric constant is provided at the ends of the pixel electrodes to lift up the equipotential lines toward the opposing electrode, in order to decrease the leakage of light and the disclination.
Claims13
A liquid crystal display device comprising pixel electrodes, a dielectric overlapped on the ends of the pixel electrodes, an oriented film covering the pixel electrodes and the dielectric, and liquid crystals on the oriented film, the liquid crystals having a positive dielectric anisotropy, and the dielectric having a relative dielectric constant larger than a relative dielectric constant of the liquid crystals in the direction of long axis.
A liquid crystal display device comprising pixel electrodes, a dielectric overlapped on the ends of the pixel electrodes, an oriented film covering the dielectric and the pixel electrodes, and liquid crystals on the oriented film, the liquid crystals having a negative dielectric anisotropy, and the dielectric having a relative dielectric constant larger than a relative dielectric constant of the liquid crystals in the direction of short axis.
A liquid crystal display device comprising pixel electrodes, a dielectric overlapped on the ends of the pixel electrodes, an oriented film covering the dielectric and the pixel electrodes, and liquid crystals on the oriented film, the dielectric having a relative dielectric constant of not smaller than 20.
A liquid crystal display device comprising pixel electrodes, a dielectric overlapped on the ends of the pixel electrodes, an oriented film covering the dielectric and the pixel electrodes, and liquid crystals on the oriented film, the dielectric having a relative dielectric constant of not smaller than 30.
A liquid crystal display device comprising pixel electrodes, an oriented film on the pixel electrodes, a dielectric provided on the ends of the pixel electrodes, and liquid crystals on the oriented film and on the dielectric, the liquid crystals having a positive dielectric anisotropy, and the dielectric having a relative dielectric constant larger than a relative dielectric constant of the liquid crystals in the direction of long axis.
A liquid crystal display device comprising pixel electrodes, an oriented film on the pixel electrodes, a dielectric provided on the ends of the pixel electrodes, and liquid crystals on the oriented film and on the dielectric, the liquid crystals having a negative dielectric anisotropy, and the dielectric having a relative dielectric constant larger than a relative dielectric constant of the liquid crystals in the direction of short axis.
A liquid crystal display device comprising pixel electrodes, an oriented film on the pixel electrodes, a dielectric provided on the ends of the pixel electrodes, and liquid crystals on the oriented film and on the dielectric, the dielectric having a relative dielectric constant of not smaller than 20.
A liquid crystal display device comprising pixel electrodes, an oriented film on the pixel electrodes, a dielectric provided on the ends of the pixel electrodes, and liquid crystals on the oriented film and on the dielectric, the dielectric having a relative dielectric constant of not smaller than 30.
Dependencies are inferred from the claim text.