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. 10, 2026
Filed:
May. 01, 2023
Applied Materials, Inc., Santa Clara, CA (US);
Chang Seok Kang, Santa Clara, CA (US);
Tomohiko Kitajima, San Jose, CA (US);
Sung-Kwan Kang, Santa Clara, CA (US);
Gill Yong Lee, San Jose, CA (US);
Applied Materials, Inc., Santa Clara, CA (US);
Abstract
Described are memory devices having an array region and an extension region adjacent the array region. The array region includes at least two unit cells stacked vertically. The extension region includes a memory stack and a plurality of word line contacts. The memory stack comprises alternating layers of at least one conductive layer, a semiconductor layer, and an insulating layer. The plurality of word line contacts extend through the memory stack to the at least one conductive layer. Each of the plurality of word line contacts have a height that is different than the height of an adjacent word line contact. Each of the plurality of word line contacts has a metallization layer on the top surface. Methods of forming a memory device are described.