FET current regulation of LEDs
US6933707B2 · kind B2 · utility
34Cited by
4References
11Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Sep 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Field Effect Transistors (FETs) are used to regulate current in a light emitting diode (LED). FETs are fundamentally voltage driven devices, where output current is governed by junction voltage. Since junction voltage can be controlled with little or no support circuitry, FETs present a solution to current regulation where cost, complexity, and perhaps even size are important.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.