Liquid crystal display including sensing unit
First Claim
Patent Images
1. A liquid crystal display comprising:
- a first panel;
a second panel facing and separated from the first panel;
a plurality of sensor scanning lines disposed on the second panel;
a plurality of sensor data lines formed on the second panel;
a liquid crystal layer interposed between the first and second panels;
a plurality of variable capacitors, whose capacitance thereof is varied by pressure; and
a plurality of reference capacitors formed on the second panel,wherein a first electrode of each variable capacitor is connected to a first electrode of a corresponding one of the reference capacitors and is directly connected to one of the sensor data lines,a second electrode of the corresponding one of the reference capacitors is connected to one of the sensor scanning lines, anda touch position is detected by sensing a voltage of the first electrode of each variable capacitor.
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Abstract
A liquid crystal display is provided. The 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 variable capacitors that vary capacitance thereof by pressure, and a plurality of reference capacitors formed on the second panel and connected to the variable capacitors.
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Citations
22 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 plurality of sensor scanning lines disposed on the second panel; a plurality of sensor data lines formed on the second panel; a liquid crystal layer interposed between the first and second panels; a plurality of variable capacitors, whose capacitance thereof is varied by pressure; and a plurality of reference capacitors formed on the second panel, wherein a first electrode of each variable capacitor is connected to a first electrode of a corresponding one of the reference capacitors and is directly connected to one of the sensor data lines, a second electrode of the corresponding one of the reference capacitors is connected to one of the sensor scanning lines, and a touch position is detected by sensing a voltage of the first electrode of each variable capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 22)
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8. A liquid crystal display 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; a plurality of sensor scanning lines intersecting the sensor data lines; a plurality of pixels connected to the image scanning lines and the image data lines; and a plurality of sensing units connected to the sensor data lines, wherein the pixels comprise liquid crystal capacitors and switching elements connected to the liquid crystal capacitors, one of the image scanning lines, and one of the image data lines, respectively, wherein the sensing units comprise; variable capacitors having capacitance which varies based on pressure; and reference capacitors, wherein a sensing electrode of each variable capacitor is connected to a first electrode of a corresponding one of the reference capacitors and one of the sensor data lines, a second electrode of the corresponding one of the reference capacitors is connected to one of the sensor scanning lines, and the sensing unit detects a touch position by sensing a voltage of the sensing electrode of each variable capacitor. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A liquid crystal display comprising:
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a first panel comprising a common electrode; a second panel facing and separated from the first panel; an image scanning line formed on the second panel; an image data line formed on the second panel and intersecting the image scanning line; a thin film transistor connected to the image scanning line and the image data line; a pixel electrode connected to the thin film transistor and facing the common electrode; a sensor data line formed on the second panel, extending in parallel to the image data line, and facing the common electrode; a sensor scanning line disposed on the second panel; a reference electrode formed on the second panel wherein the reference electrode extends from the sensor scanning line and overlaps a part of the sensor data line and a reference capacitor is formed by the reference electrode and the part of the sensor data line; and a liquid crystal layer interposed between the first and second panel; wherein a voltage of the sensor data line is varied by a variance of capacitance formed by the common electrode, the sensor data line and the liquid crystal layer, the capacitance varies according to pressure on the first panel, and touch positions are detected by the voltage of the sensor data line. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification