LIQUID CRYSTAL DISPLAY AND TOUCH SENSING METHOD THEREOF
First Claim
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1. A liquid crystal display comprising:
- a liquid crystal panel that has a plurality of pixels and a plurality of sensors; and
a touch sensing circuit that compares a sensing voltage detected by at least one sensor with a reference voltage that corresponds to the at least one sensor to determine whether the at least one sensor is touched or not,wherein a level of the reference voltage is calibrated by taking operation characteristics of the sensors into consideration.
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Abstract
A liquid crystal display includes a liquid crystal panel that has a plurality of pixels and a plurality of sensors, and a touch sensing circuit that compares a sensing voltage detected by at least one sensor with a reference voltage that corresponds to the at least one sensor to determine the at least one sensor is touched. A level of the reference voltage is calibrated by taking operation characteristics of the sensors into consideration.
58 Citations
20 Claims
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1. A liquid crystal display comprising:
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a liquid crystal panel that has a plurality of pixels and a plurality of sensors; and a touch sensing circuit that compares a sensing voltage detected by at least one sensor with a reference voltage that corresponds to the at least one sensor to determine whether the at least one sensor is touched or not, wherein a level of the reference voltage is calibrated by taking operation characteristics of the sensors into consideration. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A liquid crystal display comprising:
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a liquid crystal panel that has a plurality of pixels and a plurality of sensors; a driving unit that generates a data voltage that corresponds to an image signal to be displayed on the pixels; a touch sensing circuit that compares a sensing voltage detected by at least one sensor with a reference voltage that corresponds to the at least one sensor to determine whether the at least one sensor is touched; and a timing control unit that controls operations of the driving unit and operations of the touch sensing circuit, wherein a level of the reference voltage is calibrated by taking operation characteristics of the sensors into consideration. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A touch sensing method of a liquid crystal panel having a plurality of pixels and a plurality of sensors, the touch sensing method comprising:
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generating a calibration voltage that corresponds to each sensor in consideration of voltage characteristics of each sensor that corresponds to a non-touch event during a calibration operation; receiving a sensing voltage from at least one sensor during a normal operation; comparing the sensing voltage with the calibration voltage corresponding to the at least one sensor; and determining whether the at least one sensor is touched based on a result obtained by comparing the sensing voltage with the calibration voltage. - View Dependent Claims (18, 19, 20)
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Specification