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:
Jul. 14, 1998
Filed:
Nov. 19, 1996
Applicant:
Inventor:
Hsiu-Wen Huang, Kaoshiung, TW;
Assignee:
United Microelectronics Corporation, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
438253 ; 438254 ;
Abstract
A method of forming a bit line of a dynamic random access memory. An insulating layer is used to cover the source/drain region in a substrate. A trench is formed in the insulating layer above the source/drain region. Then, a portion of the insulating layer inside the trench is removed to form an opening which exposes the source/drain region. A conductor is used to fill the trench and the opening so as to form a bit line and a metal plug, respectively.