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:
Jun. 17, 2025
Filed:
Apr. 15, 2022
Winbond Electronics Corp., Taichung, TW;
Cheng-Hong Wei, Taichung, TW;
Chien-Hsiang Yu, Taichung, TW;
Winbond Electronics Corp., Taichung, TW;
Abstract
A memory device including a substrate, a plurality of stack structures, and a protective layer is provided. The plurality of stack structures are arranged along a first direction on an array area of the substrate, and each of the stack structures extends along a second direction different from the first direction. In a cross-sectional view of the memory device, each of the stack structures includes, in sequence from the substrate, a charge storage structure, a control gate, and a cap layer. The cap layer has a multilayer structure. The protective layer covers sidewalls of the stack structures. A width in the first direction of the charge storage structure, a width of the control gate, and a width of the cap layer are substantially equal to each other.