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:
Aug. 24, 2004
Filed:
Jan. 08, 2003
Applicant:
Inventor:
Shigetoshi Matsuta, Fukushima, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/10 ; H03H 9/64 ;
U.S. Cl.
CPC ...
H03H 9/10 ; H03H 9/64 ;
Abstract
In a SAW filter module in which a SAW chip is mounted in a recess of a substrate, the recess is closed off by a sealing plate, and end-face electrodes are provided on external surfaces including the side surfaces of the substrate. An insulation layer having a smooth surface is provided on the side opposite to the sealing plate side of the substrate, and a thin film circuit, such as circuit elements, is formed on the insulation layer. A thin film circuit of high accuracy can be formed on the insulation layer, the number of chip components whose pitch between components is severely limited, and miniaturization of the entire module can be achieved.