US 2012/0069259 A1 · LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME

Abstract

Disclosed is a liquid crystal display device with a built-in touch screen, which facilitates enhanced driving performance, and reduces manufacturing cost by a simplified manufacturing process, and a method for manufacturing the same. The device comprises a first substrate with a plurality of pixel regions defined by gate lines and data lines; an active layer in each pixel region of the first substrate; a gate pattern including a plurality of gate electrodes, a portion of the gate electrodes overlapping with a predetermined portion of the active layer with an insulating layer interposed in-between; a plurality of channel regions in the areas of the active layer overlapped with the plurality of gate electrodes; a plurality of lightly doped drain regions in the active layer and directly adjacent to the plurality of channel regions; and a data electrode electrically connected to the active layer.

Claims15

Dependent claims

An LCD device comprising:

a first substrate with a plurality of pixel regions defined by gate lines and data lines;
an active layer in each pixel region of the first substrate;
a gate pattern including a plurality of gate electrodes, a portion of the gate electrodes overlapping with a predetermined portion of the active layer with an insulating layer interposed in-between;
a plurality of channel regions in the areas of the active layer overlapped with the plurality of gate electrodes;
a plurality of lightly doped drain regions in the active layer and directly adjacent to the plurality of channel regions;
and
a data electrode electrically connected to the active layer.

4 more elements

A method for manufacturing an LCD device comprising:

depositing and patterning an active layer of a semiconductor material on a substrate with a plurality of pixel regions defined by gate lines and data lines;
coating an insulating layer on the active layer;
patterning a gate including a plurality of gate electrodes overlapped with a predetermined portion of the active layer by depositing and patterning a conductive material on the insulating layer;
etching a contact hole of a predetermined portion of the insulating layer to expose a predetermined portion of the active layer;
patterning a data electrode by burying a conductive material in the contact hole, the data electrode electrically connected to the active layer;
creating a plurality of channels by overlapping the active layer with the plurality of gate electrodes with the insulating layer interposed in-between;
and
lightly doping a plurality of lightly doped drain regions in the active layer that are directly adjacent to the plurality of channels.

5 more elements

Dependencies are inferred from the claim text.

Liquid crystal display device and method for manufacturing the same

Life of this patent

Liquid crystal display device and method for manufacturing the same

Life of this patent

Abstract

Claims15