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:
Mar. 24, 2009
Filed:
Jan. 17, 2006
Applicant:
Richard H. Tsai, Arcadia, CA (US);
Inventor:
Richard H. Tsai, Arcadia, CA (US);
Assignee:
Micron Technology, Inc., Boise, ID (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/10 (2006.01); H01L 21/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
A CMOS image sensor formed on a chip has a ROM disposed on the chip for recording pixel defect locations, chip-by-chip variations such as bias, and other manufacturing production data. Testing results and repair solutions are written to the ROM after production testing. A simple circuit for writing information to the ROM also is provided on the CMOS chip. During operational use of the image sensor, data is read from the on-chip ROM to assist in compensating for manufacturing process variations.