LIQUID CRYSTAL DISPLAY AND METHOD THEREOF
First Claim
1. A liquid crystal display comprising:
- a first panel;
a second panel facing and separated from the first panel;
a liquid crystal layer interposed between the first and second panels;
a plurality of sensor data lines formed on the second panel;
a plurality of variable capacitors of which capacitance thereof is varied by pressure, the variable capacitors connected to the sensor data lines;
a plurality of reference capacitors connected to the sensor data lines; and
first reset transistors and second reset transistors connected to the sensor data lines and supplying a first reset voltage and a second reset voltage to the sensor data lines at different times, respectively.
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Accused Products
Abstract
A liquid crystal display includes a first panel, a second panel facing and separated from the first panel, a liquid crystal layer interposed between the first and second panels, a plurality of sensor data lines formed on the second panel, a plurality of variable capacitors of which capacitance thereof is varied by pressure, the variable capacitors connected to the sensor data lines, a plurality of reference capacitors connected to the sensor data lines, and first reset transistors and second reset transistors connected to the sensor data lines and supplying a first reset voltage and a second reset voltage to the sensor data lines at different times, respectively.
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Citations
27 Claims
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1. A liquid crystal display comprising:
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a first panel;
a second panel facing and separated from the first panel;
a liquid crystal layer interposed between the first and second panels;
a plurality of sensor data lines formed on the second panel;
a plurality of variable capacitors of which capacitance thereof is varied by pressure, the variable capacitors connected to the sensor data lines;
a plurality of reference capacitors connected to the sensor data lines; and
first reset transistors and second reset transistors connected to the sensor data lines and supplying a first reset voltage and a second reset voltage to the sensor data lines at different times, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A liquid crystal display comprising:
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a first panel;
a second panel facing and separated from the first panel;
a liquid crystal layer interposed between the first and second panels;
a plurality of sensor data lines formed on the second panel;
a plurality of variable capacitors of which capacitance thereof is varied by pressure, the plurality of variable capacitors connected to the sensor data lines;
a plurality of reference capacitors connected to the sensor data lines;
a plurality of output transistors connected to the sensor data lines and generating output signals based on sensor data signals flowing through the sensor data lines; and
a plurality of current sources connected to the output transistors and flowing a constant current. - View Dependent Claims (22, 23, 24, 25)
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26. A method of processing a sensing signal based on a pressure applied to a point of a liquid crystal panel, the liquid crystal panel including a first panel receiving a common voltage and a second panel having a plurality of sensor lines, the method comprising:
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applying a gate-on voltage of a reset signal to one of the sensor lines during a period when the common voltage has a first level;
applying a switching signal to a switch of a sensing signal processor when a gate-off voltage of the reset signal is applied to the one of the sensor lines and during a period when the common voltage has a second level; and
,reading a sensing signal from an integrator in the sensing signal processor before the common voltage returns to the first level.
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27. A liquid crystal display comprising:
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a first panel;
a second panel facing and separated from the first panel;
a liquid crystal layer interposed between the first and second panels;
a sensor data line formed on the second panel;
a switch including a common electrode of the first panel and the sensor data line of the second panel as two terminals;
a reset transistor connected to a first end of the sensor data line and supplying a reset voltage to the sensor data line;
an output transistor connected to a second end of the sensor data line and generating an output signal based on a sensor data signal flowing through the sensor data line; and
,a sensing signal processor connected to the output transistor and generating a sensing signal based on the output signal.
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Specification