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:
Jan. 12, 2010
Filed:
Dec. 29, 2005
Applicant:
Heung Jin Kim, Chungcheongbuk-do, KR;
Inventor:
Heung Jin Kim, Chungcheongbuk-do, KR;
Assignee:
Dongbu Electronics, Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/8236 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mask ROM, a method for fabricating the same and a method for coding the same are disclosed. The method for forming the mask ROM maximizes packing density and integration of a device. The mask ROM includes a semiconductor substrate having a device isolation region and an active region, BN junction regions formed in predetermined portions of the active region, an insulating film, first electrode layers formed on predetermined portions of the insulating film, spacers formed at sides of the first electrode layers, and second electrode layers between the spacers.