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. 15, 2011
Filed:
Jan. 27, 2009
Hiroyuki Fujimoto, Tokyo, JP;
Yuki Togashi, Tokyo, JP;
Hiroyuki Fujimoto, Tokyo, JP;
Yuki Togashi, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
A semiconductor device includes: a monocrystalline substrate; an inter-layer film formed on the monocrystalline substrate; a contact hole penetrating the inter-layer film and partially exposing an upper surface of the monocrystalline substrate; a sidewall formed on an inner surface of the contact hole; a plurality of first monocrystalline layers which include few defects, fill the contact hole, and cover the inter-layer film; and a plurality of second monocrystalline layers which include many defects and cover the sidewall and an upper surface of the inter-layer film so as to be sandwiched between the first monocrystalline layers and the inter-layer film.