LIQUID CRYSTAL DISPLAY DEVICE WITH TOUCH PANEL
First Claim
1. A liquid crystal display device with a touch panel comprising:
- pixel electrodes as a plurality of electrodes each of which is arranged in each pixel arranged in a display area and to each of which a potential corresponding to a gray-scale value is applied;
common electrodes as a plurality of electrodes that extend in one direction so as to cross the display area;
detection electrodes as a plurality of electrodes that extend in a direction different from the one direction so as to cross the display area and detect a contact position on the panel;
a liquid crystal layer that is formed of a liquid crystal composition whose orientation is changed by an electric field formed by the pixel electrode and the common electrode; and
a drive pulse output unit that sequentially applies a potential for detecting a touch to drive electrodes as a plurality of electrodes of a portion of the common electrodes, whereinthe drive pulse output unit can output a drive pulse to the drive electrode at plural different timings within one horizontal synchronizing period for display.
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Accused Products
Abstract
A liquid crystal display device with a touch panel includes: pixel electrodes as a plurality of electrodes to each of which a potential corresponding to a gray-scale value is applied; common electrodes as a plurality of electrodes that extend in one direction; detection electrodes as a plurality of electrodes that extend in a direction different from the one direction and detect a contact position on the panel; a liquid crystal layer that is formed of a liquid crystal composition; and a drive pulse output unit that sequentially applies a potential for detecting a touch to drive electrodes as a plurality of electrodes of a portion of the common electrodes, wherein the drive pulse output unit can output a drive pulse to the drive electrode at plural different timings within one horizontal synchronizing period for display.
23 Citations
10 Claims
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1. A liquid crystal display device with a touch panel comprising:
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pixel electrodes as a plurality of electrodes each of which is arranged in each pixel arranged in a display area and to each of which a potential corresponding to a gray-scale value is applied; common electrodes as a plurality of electrodes that extend in one direction so as to cross the display area; detection electrodes as a plurality of electrodes that extend in a direction different from the one direction so as to cross the display area and detect a contact position on the panel; a liquid crystal layer that is formed of a liquid crystal composition whose orientation is changed by an electric field formed by the pixel electrode and the common electrode; and a drive pulse output unit that sequentially applies a potential for detecting a touch to drive electrodes as a plurality of electrodes of a portion of the common electrodes, wherein the drive pulse output unit can output a drive pulse to the drive electrode at plural different timings within one horizontal synchronizing period for display. - View Dependent Claims (2, 3, 4, 5)
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6. A display device with a touch panel comprising:
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a plurality of pixel electrodes; a common electrode that faces the pixel electrodes and extends in a first direction; a detection electrode that extends in a second direction intersecting the first direction; and a drive circuit unit that supplies a drive pulse to the common electrode, wherein the drive pulse rises at a first timing, falls at a second timing, rises at a third timing, and falls at a fourth timing in this order in one horizontal synchronizing period, and the first timing, the second timing, the third timing, and the fourth timing are changeable. - View Dependent Claims (7, 8, 9, 10)
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Specification