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:
Dec. 25, 1990
Filed:
Oct. 03, 1989
Masao Yamawaki, Itami, JP;
Abstract
A solid state imaging element includes a first conductivity type semiconductor substrate, a light-electricity conversion section for generating electrical charges in response to incident light including a second conductivity type layer disposed in the semiconductor substrate, a charge storage section having a layer of the second conductivity type disposed in the substrate for storing signal charges from the light-electricity conversion, transfer section for transferring signal charges from the storatge section, a first conductivity type layer disposed at the surface of substrate over the light-electricity conversion section and the charge storage section, and a light shielding film covering the transfer section wherein the concentration of dopant impurities in the charge storage section is higher than that in the light-electricity conversion section.