Method for preventing junction leakage in field emission displays
US5866979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Jul 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/319
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for fabricating a field emission display (FED) with improved junction leakage characteristics is provided. The method includes the formation of a light blocking element between a cathodoluminescent display screen of the FED and semiconductor junctions formed on a baseplate of the FED. The light blocking element protects the junctions from light formed at the display screen and light generated in the environment striking the junctions. Electrical characteristics of the junctions thus remain constant and junction leakage is improved. The light blocking element may be formed as an opaque light absorbing or light reflecting layer. In addition, the light blocking element may be patterned to protect predetermined areas of the baseplate and may provide other circuit functions such as an interconnect layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.