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:
Aug. 02, 2016
Filed:
Jun. 23, 2015
Macronix International Co., Ltd., Hsinchu, TW;
Cheng-Yi Lung, Hsinchu, TW;
MACRONIX International Co., Ltd., Hsinchu, TW;
Abstract
In a manufacturing method of an opening structure, a multi-layer structure including alternately stacked conductive layers and first dielectric layers is formed on a substrate. The conductive layers in a first region are lower than those in a second region. A second dielectric layer covering the multi-layer structure is formed. A patterned mask layer is formed on the second dielectric layer. A first filling layer covering the second dielectric layer exposed by the patterned mask layer is formed in the second region. First openings exposing the conductive layers in the first region are formed by using the first filling layer and the patterned mask layer as a mask. The first filling layer is removed. A second filling layer filling the first openings is formed. Second openings exposing the conductive layers in the second region are formed by using the second filling layer and the patterned mask layer as a mask.