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. 30, 2003
Filed:
Mar. 19, 2002
Applicant:
Inventor:
Thomas Emanuelsson, Västra Frölunda, SE;
Assignee:
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/976 ; H01L 2/980 ; H01L 2/348 ; H03F 3/04 ;
U.S. Cl.
CPC ...
H01L 2/976 ; H01L 2/980 ; H01L 2/348 ; H03F 3/04 ;
Abstract
The invention relates to an LDMOS transistor including a gate, source and drain, and an earth plane located under the gate, source and drain. According to the invention, the earth plane is given such an extent in the lateral direction of the transistor that an additional component of chip type can be mounted on it, whereby the LDMOS transistor and the additional component of chip type have a shared earth plane. The earth plane suitably comprises a silicon layer which is doped so that it has become conductive and can thereby constitute the earth plane for the transistor and the additional component of chip type.