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. 12, 2016
Filed:
Apr. 18, 2014
Inotera Memories, Inc., Taoyuan County, TW;
Tzung-Han Lee, Taipei, TW;
Inotera Memories, Inc., Taoyuan County, TW;
Abstract
A dynamic random access memory unit includes a substrate having a trench disposed therein, a self-aligned trench isolation structure formed in the bottom portion of the trench, and a first trenched gate formed in the bottom portion of the trench and above the self-aligned trench isolation structure. The substrate includes at least one pillar-shaped active body having a drain region, a body region atop the drain region, and a source region atop the body region. The first trenched gate includes a first spacer formed on the side-wall in the bottom portion of the trench to selectively cover and surround the portion of the side-wall in the trench that comprises the drain region, such for defining the width of the self-aligned trench isolation structure.