Array substrate for a liquid crystal display device having an improved contact property and fabricating method thereof
US6861368B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Jan 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136295
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An array substrate for a liquid crystal display device includes: a substrate; a gate electrode on the substrate; a gate insulating layer on the gate electrode; a semiconductor layer on the gate insulating layer; source and drain electrodes on the semiconductor layer, the source and drain electrodes including a copper layer as an upper layer and a barrier layer as a lower layer; a first passivation layer on the source and drain electrodes; a second passivation layer on the first passivation layer, the second passivation layer having a drain contact hole through the first passivation layer, the drain contact hole exposing the barrier layer; and a pixel electrode connected to the barrier layer through the drain contact hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.