LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A liquid crystal display device including a liquid crystal display panel,the liquid crystal display panel comprising:
- a plurality of pixel electrodes arranged in a matrix;
a counter electrode divided into a plurality of blocks;
a counter electrode selector circuit supplying a counter voltage and a touch panel scanning voltage to the counter electrode of the respective divided blocks;
a counter voltage supplying line connected to the counter electrode selector circuit and supplying the counter voltage; and
a touch panel scanning voltage supplying line connected to the counter electrode selector circuit and supplying the touch panel scanning voltage,wherein the counter electrode selector circuit includes a selector circuit which connects the touch panel scanning voltage supplying line and the counter electrode in a touch detection period, and the counter voltage supplying line and the counter electrode in a pixel write period, andthe touch panel scanning voltage is applied to the one block of the counter electrode by plural times in the touch detection period.
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Accused Products
Abstract
In a liquid crystal display device with a touch panel function, a second substrate has detection electrodes of a touch panel, each pixel has a pixel electrode and a counter electrode, the counter electrode is divided into a plurality of blocks, and the counter electrodes of the respective divided blocks are shared to the respective pixels of a plurality of display lines side by side, the counter electrodes of the respective divided blocks is also used as scanning electrodes of the touch panel, and a driver circuit is provided to apply a counter voltage and a touch panel scanning voltage to the counter electrodes of the respective divided blocks, and the driver circuit can adjust a supply start timing of the touch panel scanning voltage to be applied to the counter electrodes of the respective divided blocks.
17 Citations
12 Claims
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1. A liquid crystal display device including a liquid crystal display panel,
the liquid crystal display panel comprising: -
a plurality of pixel electrodes arranged in a matrix; a counter electrode divided into a plurality of blocks; a counter electrode selector circuit supplying a counter voltage and a touch panel scanning voltage to the counter electrode of the respective divided blocks; a counter voltage supplying line connected to the counter electrode selector circuit and supplying the counter voltage; and a touch panel scanning voltage supplying line connected to the counter electrode selector circuit and supplying the touch panel scanning voltage, wherein the counter electrode selector circuit includes a selector circuit which connects the touch panel scanning voltage supplying line and the counter electrode in a touch detection period, and the counter voltage supplying line and the counter electrode in a pixel write period, and the touch panel scanning voltage is applied to the one block of the counter electrode by plural times in the touch detection period. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A liquid crystal display device comprising:
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a liquid crystal display panel including a substrate; a plurality of pixel electrodes formed on the substrate and arranged in a matrix; a counter electrode divided into a plurality of blocks and opposed to the plurality of pixel electrodes commonly; a counter electrode selector circuit supplying a counter voltage and a touch panel scanning voltage to the counter electrode of the respective divided blocks and formed on the substrate; a counter voltage supplying line connected to the counter electrode selector circuit and supplying the counter voltage; and a touch panel scanning voltage supplying line connected to the counter electrode selector circuit and supplying the touch panel scanning voltage, wherein the counter electrode selector circuit includes a selector circuit which connects the touch panel scanning voltage supplying line and the counter electrode in a touch detection period, and the counter voltage supplying line and the counter electrode in a pixel write period, and the touch panel scanning voltage is applied to the one block of the counter electrode by plural times in the touch detection period. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification