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US 7,116,389 B2Granted
Liquid crystal display device and method of manufacturing the same
AssigneeLG.Phillips LCD Co., Ltd.
InventorsJong Il Kim, Oh Nam Kwon
Life of this patent
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Abstract
A method of manufacturing an LCD device is disclosed, which can improve yield by preventing occurrence of a contact failure between a transparent conductive film and a pad region (gate and data regions). In this method, amorphous transparent conductive films connected to a drain electrode, a gate pad and a data pad are formed of a transparent conductive material.
Claims26
An LCD device comprising:
- a substrate;
- a TFT having a gate electrode and source/drain electrodes on the substrate;
- a passivation film formed on an entire surface of the substrate and having a contact hole in the drain electrode of the TFT;
- and
- a pixel electrode made of an amorphous transparent conductive film of sufficient thickness to prevent a generation of a galvanic effect, and connected to the drain electrode through the contact hole, the drain electrode having a single-layer structure.
2 more elements
A pad structure of an LCD device, comprising:
- a substrate:
- a metal film formed on the substrate and functioning as a pad for the LCD device;
- and
- an amorphous transparent conductive film of sufficient thickness to prevent a generation of a galvanic effect, and formed on the metal film,
- wherein the metal film is formed of a same material as a gate line or a data line.
2 more elements
A method for manufacturing an LCD device, comprising the steps of:
- forming a gate line including a gate electrode and a gate pad on a substrate;
- forming a gate insulating film on an entire surface of the substrate;
- forming a semiconductor film above the gate electrode;
- forming a data line including a data pad to form source and drain electrodes of a TFT at both sides above the semiconductor film;
- forming a passivation film on the entire surface of the substrate;
- forming contact holes in the drain electrode, the gate pad and the data pad of the TFT;
- and
- forming, in each pixel region, amorphous transparent conductive films of sufficient thickness to prevent a generation of a galvanic effect, and connected to the drain electrode, the gate pad and the data pad through the contact holes,
- wherein at least one of the drain electrode, the gate pad and the data pad has a single-layer structure.
6 more elements
An LCD device comprising:
- a substrate;
- a TFT having a gate electrode and source/drain electrodes on the substrate;
- a passivation film formed on an entire surface of the substrate and having a contact hole in the drain electrode of the TFT;
- and
- a pixel electrode made of a polycrystalline transparent conductive film of sufficient thickness to prevent generation of a galvanic effect by a stripper, and connected to the drain electrode through the contact hole, the drain electrode having a single-layer structure.
2 more elements
A pad structure of an LCD device, comprising:
- a substrate;
- a metal film formed on the substrate and functioning as a pad for the LCD device;
- and
- a polycrystalline transparent conductive film having a thickness sufficient to prevent generation of a galvanic effect by a stripper, and formed on the metal film,
- wherein the metal film is formed of a same material as a gate line or a data line.
2 more elements
A method for manufacturing an LCD device, comprising the steps of:
- forming a gate line including a gate electrode and a gate pad on a substrate;
- forming a gate insulating film on an entire surface of the substrate;
- forming a semiconductor film above the gate electrode;
- forming a data line including a data pad to form source and drain electrodes of a TFT at both sides above the semiconductor film;
- forming a passivation film on the entire surface of the substrate;
- forming contact holes in the drain electrode, the gate pad and the data pad of the TFT;
- and
- forming, in each pixel region, polycrystalline transparent conductive films of sufficient thickness to prevent generation of a galvanic effect by a stripper, and connected to the drain electrode, the gate pad and the data pad through the contact holes,
- wherein at least one of the drain electrode, the gate pad and the data pad has a single-layer structure.
6 more elements
Dependencies are inferred from the claim text.