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:
May. 23, 2000
Filed:
Sep. 11, 1996
Abstract
A circuit substrate with a built-in coil has layers comprising respectively a wiring sheet, magnetic material, a flat coil, and magnetic material, which are overlaid. The wiring circuit sheet is made of polyimide, on which a circuit pattern is formed. The magnetic material is formed of a plurality of overlaid amorphous alloy sheets having slits and put together with adhesive. The flat coil may be formed by winding a copper wire covered with insulating film. The coil component, including the magnetic material and the flat coil, and the wiring circuit sheet are adhered to each other with the circuit pattern and the coil component being electrically connected to each other. According to one embodiment of the invention, the circuit substrate comprises a coil component with a flat coil and a pair of magnetic materials sandwiching the flat coil; and at least one wiring circuit sheet on which a circuit pattern is formed, the wiring circuit sheet being adhered to a surface of the coil component with the circuit pattern being electrically connected to the coil component.