Back to results
US 10,768,462 B2Granted
In-cell touch liquid crystal display device and method of manufacturing the same
AssigneeLG Display Co., Ltd.
InventorsJongsang Pyo, Chulsang Shin, Jeheon Cha
Life of this patent
Estimating the term…
Abstract
An in-cell touch LCD device and a method of manufacturing the same are discussed. The in-cell touch LCD device may implement a screen display and a screen touch through a thin-film transistor substrate, which has an area larger than that of a color filter substrate, thus improving touch performance and ESD performance and simplifying a manufacturing process and reducing manufacturing costs.
Claims20
An in-cell touch liquid crystal display device, comprising:
- a lower substrate;
- an upper substrate disposed over the lower substrate to face the lower substrate, the upper substrate forming a display surface of the display device and having an area larger than that of the lower substrate;
- a common electrode provided under the upper substrate;
- a gate line and a data line provided under the upper substrate and disposed to cross each other to define a pixel area;
- a touch line disposed under the upper substrate in parallel to the data line;
- a thin-film transistor provided at a crossing point of the gate line and the data line;
- a protective layer provided under the upper substrate including the thin-film transistor, and configured to expose a portion of a drain electrode of the thin-film transistor and a portion of each of the touch line and the common electrode;
- a pixel electrode provided under the protective layer and coupled to the drain electrode;
- and
- a coupling line coupled to the touch line and the common electrode.
7 more elements
A method for providing an in-cell touch liquid crystal display device, the method comprising:
- providing a lower substrate, and an upper substrate having an area larger than that of the lower substrate;
- forming a common electrode over the upper substrate;
- forming a gate line and a data line disposed to cross each other to define a pixel area over the upper substrate;
- forming a touch line disposed in parallel to the data line over the upper substrate;
- forming a thin-film transistor at a crossing point of the gate line and the data line;
- forming a protective layer, configured to expose a portion of a drain electrode of the thin-film transistor and a portion of each of the touch line and the common electrode, over the upper substrate including the thin-film transistor;
- forming a pixel electrode coupled to the drain electrode over the protective layer;
- forming a coupling line coupled to the touch line and the common electrode;
- and
- attaching the upper substrate onto the lower substrate to face the lower substrate,
- wherein the upper substrate forms a display surface of the display device.
8 more elements
Dependencies are inferred from the claim text.