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:
Dec. 21, 2010
Filed:
Feb. 22, 2008
Hung-ming Tsai, Taoyuan, TW;
Ching-nan Hsiao, Taoyuan, TW;
Chung-lin Huang, Taoyuan, TW;
Nanya Technology Corp., Taiwan, CN;
Abstract
A method for forming a semiconductor device, includes the steps of providing a substrate; forming a patterned stack on the substrate including a first dielectric layer on the substrate, a first conductive layer on the first dielectric layer and a mask layer on the first conductive layer, wherein a width of the mask layer is smaller than a width of the first conductive layer; forming a second dielectric layer on the sidewall of the patterned stack; forming a third dielectric layer on the substrate; forming a second conductive layer over the substrate; and removing the mask layer and a portion of the first conductive layer covered by the mask layer to form an opening so as to partially expose the first conductive layer.