Active matrix LCD device with image signal lines having a multilayered structure
US5751381A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1994 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Dec 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/6743
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device and a manufacturing method therefor are provided where the number of processes for manufacturing TFT substrates can be decreased and a high production yield can be attained. To attain these objects, an image signal bus-line includes at least a transparent conductive film and a semiconductor layer. A pattern of the transparent conductive film extends up to a thin film transistor to form its drain electrode, and a pattern of a semiconductor layer extends up to the transistor to form its source electrode. By virtue of these arrangements, the thin film transistor substrate can be manufactured using as little as three or four photolithography processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.