Liquid crystal display device including sensing element
First Claim
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1. A liquid crystal display device comprising:
- a first panel;
a second panel facing the first panel and spaced apart from the first panel;
a liquid crystal layer disposed between the first panel and the second panel;
a variable capacitor having a capacitance that varies in response to a touch applied on one of the first and second panels, the variable capacitor generating a control voltage that has a magnitude depending on the capacitance; and
a sensing element disposed on the second panel and generating a sensing signal based on the control voltage.
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Abstract
A liquid crystal display includes a first panel, a second panel facing the first panel and spaced apart from the first panel, a liquid crystal layer disposed between the first panel and the second panel, a variable capacitor having a capacitance that varies by a touch and generating a control voltage that has a magnitude depending on the capacitance, and a sensing element disposed on the second panel and generating a sensing signal based on the control voltage.
197 Citations
34 Claims
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1. A liquid crystal display device comprising:
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a first panel;
a second panel facing the first panel and spaced apart from the first panel;
a liquid crystal layer disposed between the first panel and the second panel;
a variable capacitor having a capacitance that varies in response to a touch applied on one of the first and second panels, the variable capacitor generating a control voltage that has a magnitude depending on the capacitance; and
a sensing element disposed on the second panel and generating a sensing signal based on the control voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A liquid crystal display device comprising:
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a plurality of image scanning lines;
a plurality of image data lines intersecting the image scanning lines;
a plurality of sensor data lines intersecting the image scanning lines, the sensor data lines being separated from the image scanning lines and the image data lines; and
a plurality of pixels, each pixel including a display circuit and a sensing circuit, wherein the display circuit comprises a liquid crystal capacitor and a first switching element connected to the liquid crystal capacitor, one of the image scanning lines, and one of the image data lines, and the sensing circuit comprises a variable capacitor having a capacitance that varies in response to a touch applied on a display panel of the liquid crystal display device, a sensing element connected to the variable capacitor, and a second switching element connected to the sensing element and one of the sensor data lines. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A liquid crystal display device comprising:
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a first substrate;
a common electrode formed on the first substrate;
a second substrate facing the first substrate and spaced apart from the first substrate;
an image scanning line disposed on the second substrate;
an image data line disposed on the second substrate and intersecting the image scanning line;
a first thin film transistor connected to the image scanning line and the image data line;
a pixel electrode connected to the first thin film transistor and facing the common electrode;
a sensing electrode disposed on the second substrate and facing the common electrode;
a second thin film transistor having a control electrode connected to the sensing electrode; and
a liquid crystal layer disposed between the first substrate and the second substrate, wherein the sensing electrode and the control electrode of the second thin film transistor are floating. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification