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:
Jul. 28, 2015
Filed:
May. 10, 2012
Kota Funayama, Kanagawa, JP;
Hiraku Chakihara, Kanagawa, JP;
Yasushi Ishii, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
A memory cell of a nonvolatile memory and a capacitive element are formed over the same semiconductor substrate. The memory cell includes a control gate electrode formed over the semiconductor substrate via a first insulating film, a memory gate electrode formed adjacent to the control gate electrode over the semiconductor substrate via a second insulating film, and the second insulating film having therein a charge storing portion. The capacitive element includes a lower electrode formed of the same layer of a silicon film as the control gate electrode, a capacity insulating film formed of the same insulating film as the second insulating film, and an upper electrode formed of the same layer of a silicon film as the memory gate electrode. The concentration of impurities of the upper electrode is higher than that of the memory gate electrode.