Electro-optical devices in which pixel section and the driver circuit are disposed over the same substrate
US6362507B1 · kind B1 · utility
70Cited by
3References
30Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/6721
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An object of the present invention is to improve the reliability and the operation performance of a semiconductor device comprising a driver circuit and a pixel pixel section by optimizing the TFT structure disposed in each circuit in accordance with the function of the circuit. The optimized circuit operation can be obtained by providing a LDD region that overlaps with at least the gate electrode in the driver circuit n-channel TFT, and a LDD region in the pixel section n-channel TFT in which the impurity concentration of the both LDD regions are differed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.