Patent ID: 8000566

Claim:
A suspension board with circuit comprising: a metal supporting board; an insulating base layer formed on the metal supporting board; a conductive pattern formed on the insulating base layer; an insulating cover layer formed on the insulating base layer so as to cover the conductive pattern; an optical waveguide; and a light emitting device; wherein the metal supporting board is provided with a magnetic head in a hard disk drive, and supports the magnetic head against an airflow caused when the magnetic head and a hard disk travel relatively to each other, while holding a minute gap between the magnetic head and the hard disk, the conductive pattern is formed on the metal supporting board for connecting an external circuit board and the magnetic head, the light emitting device is optically connected with the optical waveguide, and the optical waveguide is adhered on the metal supporting board, the insulating base layer, or the insulating cover layer via a separate adhesive layer.