Device for conditioning control signal to electron emitter, preferably so that collected electron current varies linearly with input control voltage
US5831392A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Oct 31, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A voltage-adjustment section (20) of an electronic device converts an input control voltage (V.sub.1) into an output control voltage (V.sub.0) in such a way that a collector current (I.sub.CP) form with electrons emitted from an emitter (EP) of an emission/collection cell (26), or triode, varies in a desired, typically linear, manner with the input control voltage. The triode further includes a collector (CP) that carries the collector current and a gate electrode (GP) that regulates the collector current as a function of the output control voltage. Control of the collector current so as to achieve the desired current/voltage relationship is achieved with an analog control loop containing the triode and an amplifier (28) coupled between the triode's collector and gate electrode. The triode thus typically has a linear gamma characteristic relative to the input control voltage. The voltage-adjustment section is suitable for use in a display device such as a flat-panel display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.