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. 25, 1997
Filed:
Oct. 03, 1994
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor memory has a random access memory (DRAM) and a mask read only memory (MROM) formed on the same semiconductor substrate; each of the DRAM and MROM comprising a plurality of word lines, a plurality of bit lines and a plurality of memory cells: each of the memory cells included in the DRAM and the MROM comprising; a switching element including a source and drain regions and a gate electrode; a capacitance element formed of a lamination of an insulating film and a plate electrode subsequently laminated in this order; and a conductive parts connecting the switching element to the word lines, the bit lines, and a capacitance element; the MROM including a predetermined memory cell which lacks at least one part of the conductive parts.