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:
Nov. 26, 2013
Filed:
Aug. 27, 2010
Kazuhiro Nagata, Kanagawa-ken, JP;
Kazuhiro Nagata, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a solid state imaging device has a semiconductor substrate. First, second and third photoelectric conversion portions are provided in a surface region of the semiconductor substrate. A blue color filter has a film thickness to give a first light path length. A green color filter has a film thickness to give a second light path length longer than the first light path length. A red color filter has a film thickness to give a third light path length longer than the second light path length. A flattening film is formed on the blue color filter, the green color filter and the red color filter. The flattening film flats steps of the color filters. Micro lenses are provided on the flat film. Each of the micro lenses is formed at a position corresponding to each of the first, second and third photoelectric conversion portions.