SPAD device with radiation blocking rings and vias and related arrays and methods
US9728659B2 · kind B2 · utility
39Cited by
1References
18Claims
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Key dates
| Filing date | Sep 30, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Sep 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/1515
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Single-Photon Avalanche Diode (SPAD) device an active region configured to detect incident radiation, a first radiation blocking ring surrounding the active region, and a radiation blocking cover configured to shield part of the active region from the incident radiation. The radiation blocking cover is configured to define a second radiation blocking ring vertically spaced apart from the first radiation blocking ring. The SPAD device may include radiation blocking vias extending between the first and second radiation blocking rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.