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:
Mar. 22, 1977
Filed:
Sep. 24, 1973
Irving T Ho, Poughkeepsie, NY (US);
Hwa N Yu, Yorktown Heights, NY (US);
IBM Corporation, Armonk, NY (US);
Abstract
A charge-coupled random access memory cell is formed in a semiconductor body divided into three adjacent regions. The first region has an impurity diffused therein and serves alternately as a source and a drain for charge carriers. The second or gate region has a predetermined threshold voltage and the third or storage region has a lower threshold voltage. A single unitary metal electrode extends in superimposed relation to the second and third regions. Upon the application of potentials to the first region and the electrode, charge carriers may be stored in or removed from the third region so as to write a '1' or a '0' in the cell.