Programmable multi-wavelength detector array
US6407439B1 · kind B1 · utility
64Cited by
7References
24Claims
0Family size
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Key dates
| Filing date | Aug 19, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Aug 19, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/544
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
More than one photodetectors, each sensitive to different wavelengths, are integrated on a common semiconductor substrate. The different photodetectors can be stacked over one another or placed laterally on the common substrate. Gratings may be placed over each photodetector to sharpen the spectral response. Three such photodetectors can form a pixel of an active matrix array for an image sensor. The different photodetectors in each pixel can be multiplexed electronically. The electronic circuits for activating the different photodetectors can be integrated on the same substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.