Liquid crystal display device and fabricating method thereof
AssigneeLG. Philips LCD Co., Ltd.
InventorsSeung Kyu Choi, Chul Woo Im
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Abstract
Disclosed is a liquid crystal display device and fabricating method thereof to increase a capacitance of a storage capacitor as well as stabilize performance of a thin film transistor. The present invention includes a gate electrode and a gate line on a substrate, an insulating layer on the gate electrode and gate line wherein the insulating layer on the gate line is thinner than the insulating layer on the gate electrode, an active layer formed on the gate electrode so as to leave the insulating layer therebetween, source and drain electrodes on the active layer, and a capacitor electrode formed on the gate line.
Claims15
A liquid crystal display device comprising:
- a gate electrode and a gate line on a substrate;
- an insulating layer covering the gate electrode, gate line, and substrate;
- an active layer formed over the gate electrode so as to leave the insulating layer therebetween;
- source and drain electrodes on the active layer;
- a capacitor electrode formed over the gate line;
- a passivation layer on the drain and capacitor electrodes;
- and
- a pixel electrode connected to the drain electrode wherein a portion of the insulating layer on the gate line is thinner than a portion of the insulating layer on the gate electrode.
A method of fabricating a liquid crystal display device, comprising the steps of:
- forming a gate electrode and a gate line on a substrate;
- depositing a gate insulating layer on the gate electrode, gate line, and the substrate;
- forming an active layer on the gate insulating layer over the gate electrode;
- etching the gate insulating layer to a predetermined thickness in all other areas except an area under the active layer;
- and
- forming source and drain electrodes on the active area and a capacitor electrode on the gate insulating layer over the gate line.
Dependencies are inferred from the claim text.