METHOD AND APPARATUS FOR DETECTING A TOUCH POSITION, AND TOUCHSCREEN DISPLAY APPARATUS HAVING THE SAME
First Claim
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1. A method for detecting a touch position, the method comprising:
- integrating a readout current detected at a sensing part to generate an integrated readout voltage;
converting the integrated readout voltage into a digital converted readout voltage data; and
compensating a variation of the digital converted readout voltage data to determine whether the sensing part is touched.
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Abstract
A method for detecting a touch position includes integrating a readout current detected at a sensing part to generate an integrated readout voltage, converting the integrated readout voltage into a digital converted readout voltage data and compensating a variation of the digital converted readout voltage data to determine whether the sensing part is touched.
37 Citations
20 Claims
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1. A method for detecting a touch position, the method comprising:
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integrating a readout current detected at a sensing part to generate an integrated readout voltage; converting the integrated readout voltage into a digital converted readout voltage data; and compensating a variation of the digital converted readout voltage data to determine whether the sensing part is touched. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for detecting a touch position, the apparatus comprising:
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an integrator which integrates a readout current detected at a sensing part to generate an integrated readout voltage; an analog-to-digital converter which converts the integrated readout voltage into a digital converted readout voltage data; and a digital processing circuit which compensates a variation of the digital converted readout voltage data to determine whether the sensing part is touched. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A touchscreen display apparatus comprising:
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a liquid crystal display panel comprising; a touchscreen display substrate including a pixel array and a sensing array; an opposite substrate disposed opposite to the touchscreen display substrate; and a liquid crystal layer interposed between the touchscreen display substrate and the opposite substrate; and a touch position detection apparatus comprising; an integrator which integrates a readout current detected at a sensing part to generate an integrated readout voltage; an analog-digital converter which converts the integrated readout voltage into a digital converted readout voltage data; and a digital processing circuit which compensates a variation of the digital converted readout voltage data to determine whether the sensing part is touched.
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Specification