Invention Grant
- Patent Title: Array of Geiger-mode avalanche photodiodes for detecting infrared radiation
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Application No.: US16228483Application Date: 2018-12-20
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Publication No.: US10700220B2Publication Date: 2020-06-30
- Inventor: Massimo Cataldo Mazzillo , Piero Fallica , Salvatore Lombardo
- Applicant: STMICROELECTRONICS S.R.L.
- Applicant Address: IT Agrate Brianza
- Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed Intellectual Property Law Group LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@444c4d3b
- Main IPC: H01L31/107
- IPC: H01L31/107 ; H01L31/0216 ; H01L27/146 ; G01J1/44 ; H01L27/144 ; H01L31/02

Abstract:
An array of Geiger-mode avalanche photodiodes is formed in a die and includes: an internal dielectric structure, arranged on the die; and an external dielectric region arranged on the internal dielectric structure. The external dielectric region is formed by an external material that absorbs radiation having a wavelength that falls in a stop-band with low wavelength and transmits radiation having a wavelength that falls in a pass-band with high wavelength, at least part of the pass-band including wavelengths in the infrared. The internal dielectric structure is formed by one or more internal materials that substantially transmit radiation having a wavelength that falls in the stop-band and in the pass-band and have refractive indices that fall in an interval having an amplitude of 0.4. In the stop-band and in the pass-band the external dielectric region has a refractive index with the real part that falls in the above interval.
Public/Granted literature
- US20190148568A1 ARRAY OF GEIGER-MODE AVALANCHE PHOTODIODES FOR DETECTING INFRARED RADIATION Public/Granted day:2019-05-16
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