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. 22, 1992
Filed:
May. 08, 1991
Applicant:
Inventors:
Hon-Sum P Wong, Peekskill, NY (US);
Ying L Yao, Millwood, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257243 ; 257244 ; 257249 ;
Abstract
A charge-coupled device having a three-dimensional trench structure that achieves a highly effective sensing and storage area in a CCD imager while maintaining a small cell layout area. The trench CCD device includes a plurality of trench electrodes etched in the surface of the device, with surface electrodes in between. The trenches are shaped to facilitate charge transfer along their sidewalls and to maximize trench surface area.