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:
Sep. 24, 2013
Filed:
May. 28, 2011
Akio Shima, Hino, JP;
Yoshitska Sasago, Tachikawa, JP;
Toshiyuki Mine, Fussa, JP;
Masaharu Kinoshita, Kokubunji, JP;
Akio Shima, Hino, JP;
Yoshitska Sasago, Tachikawa, JP;
Toshiyuki Mine, Fussa, JP;
Masaharu Kinoshita, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A technique used for a semiconductor device formed by stacking multiple structural bodies each having a semiconductor device, for preventing generation of thermal load on a structural body at a lower layer which is caused by a laser used in a step of forming a structural body at an upper layer. In a phase-change memory including multiple stacked memory matrices, a metal film is disposed between a memory matrix at a lower layer and a memory matrix at an upper layer formed over the memory matrix at the lower layer, in which the laser used for forming the memory matrix is reflected at the metal film and prevented from transmitting the metal film, thereby preventing the phase-change material layer, etc. in the memory matrix at the lower layer from being directly heated excessively by the laser.