Method and apparatus providing and optical guide in image sensor devices
US7511257B2 · kind B2 · utility
42Cited by
11References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2005 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Aug 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
Abstract
A device and method for providing an optical guide of a pixel to guide incoming light to/from a photo-conversion device of the pixel to improve the optical crosstalk immunity. The optical guide includes an optically reflecting barrier formed as a trench filled with a material which produces reflection. The trench fill material may have an index of refraction that is less than the index of refraction of the material used for the trench surrounding layers to provide a light reflective structure or the trench fill material may provide a reflection surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.