Field emission type display device and method for driving same
US5834900A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/319
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field emission type display device capable of preventing a variation in luminance of the display device due to a variation in ambient temperature. A resistive layer is formed on cathode electrodes arranged in a display region and conical emitters are arranged on the resistive layer. The resistive layer is made of a semiconductor material, resulting in being varied in resistance depending on a temperature. A monitor resistive pattern made of the same material as the resistive layer is arranged so as to measure the resistance variation in the form of a voltage variation through an OP amplifier 11, which is then fed to the control circuit. The control circuit controls a gate voltage depending on the resistance to prevent a variation in luminance of the display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.