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. 21, 1995
Filed:
Jun. 10, 1994
Shozo Okada, Kobe, JP;
Hisashi Ogawa, Katano, JP;
Naoto Matsuo, Ibaragi, JP;
Yoshiro Nakata, Ikoma, JP;
Toshiki Yabu, Hirakata, JP;
Susumu Matsumoto, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A semiconductor memory of the invention includes a semiconductor substrate having a plurality of transistors, a plurality of stacked capacitors connected to portions of the plurality of transistors, a plurality of first level interconnection layers connected to other portions of the plurality of transistors, and a plurality of second level interconnection layers disposed above the stacked capacitors and the first level interconnection layers. Each of the plurality of stacked capacitors includes a first electrode layer, a capacitance insulating film formed on top of the first electrode layer, and a second electrode layer formed on top of the capacitance insulating film. The second electrode layer is connected to a portion of one of the plurality of second level interconnection layers. At least portions of the plurality of first level interconnection layers are connected to other portions of the plurality of second level interconnection layers. Each of the plurality of first level interconnection layers shares the same layer as at least one of the first electrode layer and the second electrode layer.