Patent ID: 8737020
Filing Date: 2014-05-27
Classification: G11B,H05K

Abstract:
1. A suspension circuit board comprising: a metal support board; a first insulation layer disposed on the metal support board, the first insulation layer being made of an insulation material; a conductive layer disposed on the first insulation layer, the conductive layer forming a wire; and a second insulation layer disposed on the first insulation layer and the conductive layer, the second insulation layer being made of an insulation material; wherein: the first insulation layer is provided with a first insulation opening; the metal support board is provided with a metal support board opening at a position overlapping with the first insulation opening in a direction along which the conductive layer is extended, so that a rear surface of the conductive layer is exposed; the second insulation layer is provided with a second insulation opening at a position overlapping with the first insulation opening in the direction along which the conductive layer is extended, so that a front surface of the conductive layer is exposed; when a length of the first insulation opening in the direction along which the conductive layer is extended is represented as a length L upon applying a load in a thickness direction to the conductive layer at a position corresponding to the first insulation opening, when a stress generated in the conductive layer at a position corresponding to a periphery of the first insulation opening is represented as a first stress F