Electrically isolated pixel element in a low voltage activated active matrix liquid crystal display and method
US5867242A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Apr 1, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D86/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a novel pixel structure, and method for making the same, that reduces wasteful voltage drop associated with other pixel structures that cover their pixel elements with a final passivation layer. The presently claimed pixel structure is a combination of a thin film transistor (TFT), an associated pixel element, and a passivation layer. The TFT is first deposited atop a suitable substrate and patterned. Then, the passivation layer is deposited on top of the thin film transistor. Contact cuts are made into the passivation layer where the pixel element is to contact the TFT. Finally, the pixel element is deposited--lying atop the passivation layer and contacting with the underlying TFT where the contact cuts were made in the passivation layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.