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:
Apr. 24, 2018
Filed:
May. 26, 2017
Micron Technology, Inc., Boise, ID (US);
Randy J. Koval, Boise, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
An embodiment of a method of forming a portion of a memory array includes forming a conductor with a concentration of germanium that decreases with an increasing thickness of the conductor, removing a portion of the conductor at a rate governed by the concentration of germanium to form a tapered first opening through the conductor, removing a sacrificial material below the conductor to form a second opening contiguous with the tapered first opening, and forming a semiconductor in the contiguous first and second openings, wherein a portion of the semiconductor pinches off within the first opening adjacent an upper surface of the conductor before the contiguous first and second openings are completely filled with the semiconductor.