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:
Jun. 23, 2015
Filed:
Aug. 29, 2012
Applicants:
Hiroki Sasaki, Kanagawa, JP;
Koichi Kokubun, Kanagawa, JP;
Inventors:
Hiroki Sasaki, Kanagawa, JP;
Koichi Kokubun, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/335 (2011.01); H04N 5/228 (2006.01); H04N 5/225 (2006.01); H01L 31/062 (2012.01); H01L 31/113 (2006.01); H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14629 (2013.01); H01L 27/1463 (2013.01); H01L 27/1464 (2013.01);
Abstract
According to one embodiment, a pixel detecting light having the longest wavelength in a picture element includes a protective film which is disposed on a photodiode at a surface side facing a light incident surface of a semiconductor substrate and a first diffraction grating portion which is disposed on the protective film and where columnar holes penetrating in a thickness direction are two-dimensionally arrayed. Diameter and array period of the holes are selected so that the first diffraction grating portion reflects light transmitting through a filter disposed on the pixel.