Backside-illuminated solid-state image pickup device
US7989907B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2009 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Jan 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/807
Abstract
Provided is a backside-illuminated solid-state image pickup device capable of allowing peripheral circuits to produce stable waveforms and thereby achieving image characteristics with less noise, the device including: a first-conductivity-type semiconductor layer having a first principal surface and a second principal surface opposed to the first principal surface and also having a pixel area and an analog circuit area; a first P type area formed to lie between the second principal surface and the first principal surface in the analog circuit area; a metal layer formed at least partially on the second principal surface of the first P type area; a VSS electrode electrically connected to the metal layer; a photo-conversion area formed in the pixel area and used to accumulate electric charges generated by photoelectric conversion; and a microlens provided on the second principal surface in the pixel area so as to correspond to the photo-conversion area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.