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:
Sep. 09, 2003
Filed:
Jan. 15, 2002
Applicant:
Inventor:
Shui-Chin Huang, Tainan, TW;
Assignee:
Macronix International Co., Ltd., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/7108 ;
U.S. Cl.
CPC ...
H01L 2/7108 ;
Abstract
A vertical read-only memory (ROM) is provided, which includes a gate on a substrate, a source/drain at the bottom of a trench in the substrate, a polysilicon bit-line in the trench, and a dielectric layer separating the polysilicon bit-line and the side-walls of the trench. The polysilicon bit-line electrically connects with the source/drain. The substrate of the side-wall of the trench adjacent to the gate serves as a coding region.