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. 28, 1999
Filed:
Jul. 10, 1998
Applicant:
Inventors:
Assignee:
United Semiconductor Corp., Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257390 ; 257910 ;
Abstract
The structure of a buried bit line. A substrate is provided and a trench is, formed within the substrate. Next, a trench insulating layer is located on a portion of the trench surface to expose a top corner of the trench. Then, a first conductive layer is fills the trench and forms a surface. Afterwards, a second conductive layer is formed on the surface and fills the trench, wherein the second conductive layer makes contact with the top corner, and a shallow junction region is located at the top corner and makes contact with the second conductive layer.