Touch controller having increased sensing sensitivity, and display driving circuit and display device and system having the touch controller
First Claim
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1. A display device comprising:
- a display panel including sensing units and display pixels;
a display driving unit configured to drive the display panel; and
a touch controller configured to detect an electrical change of the sensing units,wherein the display driving unit and the touch controller are included in a same semiconductor chip,the display driving unit and the touch controller share timing information, andthe touch controller is configured to periodically check the electrical change of the sensing units when the display panel is in a sleep mode.
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Abstract
A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
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Citations
15 Claims
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1. A display device comprising:
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a display panel including sensing units and display pixels; a display driving unit configured to drive the display panel; and a touch controller configured to detect an electrical change of the sensing units, wherein the display driving unit and the touch controller are included in a same semiconductor chip, the display driving unit and the touch controller share timing information, and the touch controller is configured to periodically check the electrical change of the sensing units when the display panel is in a sleep mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A display device comprising:
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a display panel including display pixels; a touch panel including sensing units; a display driving unit configured to drive the display panel; and a touch controller configured to detect an electrical change of the sensing units, wherein the sensing units are disposed on an upper glass plate of the display panel, wherein the display driving unit and the touch controller share timing information, wherein the display driving unit and the touch controller are included in a same semiconductor chip, and wherein the touch controller is configured to periodically check the electrical change of the sensing units when the display panel is in a sleep mode. - View Dependent Claims (12, 13, 14, 15)
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Specification