Complete-charge-transfer vertical color filter detector
US7132724B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Nov 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8053
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vertical-color-filter detector disposed in a semiconductor structure comprises a complete-charge-transfer detector comprising semiconductor material doped to a first conductivity type and has a horizontal portion disposed at a first depth in the semiconductor structure substantially below an upper surface thereof and a vertical portion communicating with the upper surface of the semiconductor structure. The complete-charge-transfer detector is disposed within a first charge container forming a potential well around it. The horizontal portion of the complete-charge-transfer detector has a substantially uniform doping density in a substantially horizontal direction and the vertical portion of the complete-charge-transfer detector has a doping density that is a monotonic function of depth and is devoid of potential wells. A first charge-transfer device is disposed substantially at an upper surface of the semiconductor structure and is coupled to the vertical portion of the complete-charge-transfer detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.