Patent ID: 9576603
Date: 2017-02-21
CPC Classifications: G11B,H05K

Claim:
1. A suspension board with circuit comprising: a first layer having electrically conductive properties, a second layer having insulation properties and formed at one side in a thickness direction of the first layer, a third layer having electrically conductive properties and formed at one side in the thickness direction of the second layer, and a fourth layer having insulation properties and formed at one side in the thickness direction of the third layer, wherein the first layer includes an electronic component connecting terminal which is electrically connected to an electronic component, the second layer includes a first opening portion passing through in the thickness direction, the third layer includes a first conductive circuit and a second conductive circuit, the first conductive circuit includes a magnetic head connecting terminal which is electrically connected to a magnetic head provided in a slider, such that the magnetic head connecting terminal is disposed on the one side in the thickness direction of the second layer having insulation properties, and the electronic component connecting terminal is disposed on an opposite side in the thickness direction of the second layer having insulation properties and is electrically connected to the electronic component on said opposite side, the first opening portion is provided with a connecting portion electrically connecting the second conductive circuit to the first layer, the fourth layer is formed with a second opening portion passing through in the thickness direction and exposing the second conductive circuit or the fourth layer and the second layer are formed with a second opening portion passing through in the thickness direction and exposing the first layer, and the second opening portion is hollow.