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:
May. 07, 2013
Filed:
Jan. 20, 2011
William Edward Asher, Leominster, MA (US);
Michael Alan Case, Stow, MA (US);
Jason Mcclure, Acton, MA (US);
William Edward Asher, Leominster, MA (US);
Michael Alan Case, Stow, MA (US);
Jason McClure, Acton, MA (US);
Roper Scientific, Inc., Tucson, AZ (US);
Abstract
A backside-illuminated image sensor is disclosed having improved quantum efficiency (QE) in the near infrared wavelengths (NIR: 750-1100 nm) with minimal optical interference fringes produced by multiple reflected rays within the photosensitive Si region of the sensor, which may be a charge-coupled device, a complementary metal oxide sensor or an electron-multiplication sensor. The invention comprises a fringe suppression layer applied to the backside surface of the photosensitive Si region of a detector (Si substrate) whereby the fringe suppression layer functions in concert with the Si substrate to reduce the occurrence of interference fringes in the NIR while maintaining a high QE over a broad range of wavelengths (300-1100 nm). The combination of a fringe suppression layer applied to a Si substrate provides a new class of back illuminated solid state detectors for imaging.