Active pixel sensor with bootstrap amplification and reduced leakage during readout
US6410899B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/803
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated active pixel sensor array comprises a plurality of row select lines, each of said row select lines coupled to a source of a row-select signal; a plurality of source-follower drain row lines, each of said source-follower drain row lines coupled to a source of a source-follower drain row signal; a plurality of column output lines; a reset line coupled to a source of a reset signal; a source of reset potential; and a plurality of active pixel sensors, each pixel sensor associated with one row and one column of the array and including a photodiode having a first terminal coupled to a first reference potential and a second terminal, a Reset transistor having a gate coupled to the reset line, a drain coupled to the reset potential to reverse bias the photodiode, and a source coupled to the second terminal of the photodiode, a Source-Follower transistor having a gate coupled to the second terminal of the photodiode, a drain connected to the one of the plurality of source-follower drain row lines with which its active pixel sensor is associated, and a source, a Row-select transistor having a gate coupled to the one of the plurality of row-select lines with which its active pi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.