Patent ID: 7569967

Claim:
A disk device which comprises a disk for storing information and a disk drive for driving said disk, wherein: said disk drive includes a rotor portion mounting an annular permanent magnet on an outer peripheral portion thereof, and a stator portion disposed on the outer side in the radial direction of said annular permanent magnet; said stator portion is constituted by a wiring board provided with a stator core formed by laminating magnetic metal plates in a radial manner and a coil that is so formed as to surround said stator core while electrically connecting wiring layers and through hole portions; and said coil being so formed that among envelopes connecting the outermost peripheral surfaces of said coil in the radial direction, the envelops intersect at an inner position in the radial direction; wherein said coil is so formed that gaps among said wiring layers are widened in the radial direction thereof on the inner side of the position where the envelopes intersect each other, and the wiring layers of the a neighboring coil enter into the widened portions.