The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2021
Filed:
Nov. 28, 2017
Ams International Ag, Rapperswil, CH;
Gerald Meinhardt, Graz, AT;
Ewald Wachmann, Kainbach, AT;
Martin Sagmeister, Graz, AT;
Jens Hofrichter, Gattikon, CH;
AMS INTERNATIONAL AG, Rapperswil, CH;
Abstract
The photodiode device comprises a substrate () of semiconductor material with a main surface (), a plurality of doped wells () of a first type of conductivity, which are spaced apart at the main surface (), and a guard ring () comprising a doped region of a second type of conductivity, which is opposite to the first type of conductivity. The guard ring () surrounds an area of the main surface () including the plurality of doped wells () without dividing this area. Conductor tracks () are electrically connected with the doped wells (), which are thus interconnected, and further conductor tracks () are electrically connected with a region of the second type of conductivity. A doped surface region () of the second type of conductivity is present at the main surface () and covers the entire area between the guard ring () and the doped wells ().