Liquid crystal display device using in-cell touch mode and method for manufacturing the same
First Claim
1. A liquid crystal display (LCD) device, comprising:
- a lower substrate and an upper substrate disposed to face each other and having a liquid crystal layer interposed therebetween;
black matrices provided on the lower substrate, a color filter provided between the black matrices, and a common electrode provided on the entire surface of the lower substrate;
a gate line and a data line provided on the upper substrate and intersect with each other to define a pixel area;
a thin film transistor (TFT) present in the pixel area of the upper substrate; and
a pixel electrode electrically in contact with the TFT,wherein a sensing signal is output by detecting a change in self-capacitance between a touch object contacting the upper substrate and the gate line and the data line, andwherein the gate line and the data line are used as electrodes of the LCD device in a display section, and are used as self-capacitance sensors in a touch section.
1 Assignment
0 Petitions
Accused Products
Abstract
A liquid crystal display (LCD) device includes a lower substrate and an upper substrate disposed to face each other and having a liquid crystal layer interposed therebetween, black matrices provided on the lower substrate, a color filter provided between the black matrices, and a common electrode provided on the entire surface of the lower substrate, a gate line and a data line provided on the upper substrate and intersect with each other to define a pixel area, a thin film transistor (TFT) present in the pixel area of the upper substrate, and a pixel electrode electrically in contact with the TFT, wherein a sensing signal is output by detecting a change in self-capacitance between a touch object contacting the upper substrate and the gate line and the data line.
5 Citations
6 Claims
-
1. A liquid crystal display (LCD) device, comprising:
-
a lower substrate and an upper substrate disposed to face each other and having a liquid crystal layer interposed therebetween; black matrices provided on the lower substrate, a color filter provided between the black matrices, and a common electrode provided on the entire surface of the lower substrate; a gate line and a data line provided on the upper substrate and intersect with each other to define a pixel area;
a thin film transistor (TFT) present in the pixel area of the upper substrate; anda pixel electrode electrically in contact with the TFT, wherein a sensing signal is output by detecting a change in self-capacitance between a touch object contacting the upper substrate and the gate line and the data line, and wherein the gate line and the data line are used as electrodes of the LCD device in a display section, and are used as self-capacitance sensors in a touch section. - View Dependent Claims (2, 3)
-
-
4. A method for manufacturing a liquid crystal display (LCD) device, the method comprising:
-
providing a lower substrate and an upper substrate disposed to face each other and having a liquid crystal layer provided therebetween; forming a black matrix, a color filter, and a common electrode on the lower substrate; forming a gate line, an active layer, a source/drain electrode, and a data line intersecting with the gate line to form a pixel area on the upper substrate; and forming a pixel electrode electrically in contact with the drain electrode in the pixel area of the upper substrate, wherein a sensing signal is output by detecting a change in self-capacitance between a touch object contacting the upper substrate and the gate line and the data line, and wherein the gate line and the data line are used as electrodes of the LCD device in a display section, and are used as self-capacitance sensors in a touch section. - View Dependent Claims (5, 6)
-
Specification