Liquid crystal display device including sensing element
First Claim
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1. A liquid crystal display device comprising:
- 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 comprising;
an input electrode;
a control electrode connected to the sensing electrode; and
an output 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.
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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.
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Citations
8 Claims
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1. 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 comprising; an input electrode; a control electrode connected to the sensing electrode; and an output 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 (2, 3, 4, 5, 6, 7, 8)
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Specification