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:
Oct. 25, 2016
Filed:
Sep. 20, 2013
Omnivision Technologies, Inc., Santa Clara, CA (US);
Tiejun Dai, Santa Clara, CA (US);
Guannho George Tsau, San Jose, CA (US);
OmniVision Technologies, Inc., Santa Clara, CA (US);
Abstract
An example imaging sensor system includes a backside-illuminated CMOS imaging array formed in a first semiconductor layer of a first wafer. The CMOS imaging array includes an N number of pixels, where each pixel includes a photodiode region. The first wafer is bonded to a second wafer at a bonding interface between a first metal stack of the first wafer and a second metal stack of the second wafer. A storage device is disposed in a second semiconductor layer of the second wafer. The storage device includes at least N number of storage cells, where each of the N number of storage cells are configured to store a signal representative of image charge accumulated by a respective photodiode region. Each storage cell includes a circuit element that is sensitive to light-induced leakage.