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:
Feb. 23, 2016
Filed:
Jan. 06, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To realize simplification of a process of forming hollow portions in a solid-state imaging apparatus, a plurality of light receiving portions is formed on a semiconductor substrate, and color filter layers as hollow portion forming layers are formed above the semiconductor substrate (FIG.A). A sealable layer for opening boundary portions of the color filter layers is formed on the color filter layers (FIG.B). Hollow portions are formed on side surfaces of the color filter layer by etching using the sealable layer as a mask (FIG.C). The sealable layer is heated and softened to connect mutually adjacent sealable layers to form a sealing layer for sealing the aperture regions of the hollow portions (FIG.D).