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. 22, 1994
Filed:
May. 13, 1992
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257232 ; 257218 ; 257220 ; 257221 ; 257233 ; 257248 ; 348311 ;
Abstract
A CCD shift register which is improved in the transfer efficiency with a minimal decrease in the amount of electric charge that can be handled. The CCD shift register has an array of transfer electrodes, each comprising a pair of storage and transfer gate electrodes, which are formed on a semiconductor substrate through a gate insulator. A semiconductor region under each storage gate electrode is divided into a plurality of subregions by using impurities.