| 摘要 |
A carrier board structure includes at least one upper magnetic coil, at least one lower magnetic coil, a flexible board, a dielectric layer, at least one connection pad and at least one gold finger. The flexible board has a middle region having a middle hole, and two side regions thinner than the middle region. A groove used as a fold line is provided on the lower surface of each side region bordering on the middle region. The upper and lower magnetic coils are configured in the flexible board and separated by the dielectric layer. The gold fingers are provided on the two side regions and connected to the upper magnetic coils. The upper and lower magnetic coils are around the middle hole and connected by the connection pads. The fold lines help the two side regions to fold without damage to the upper and lower magnetic coils. |
| 主权项 |
1. A carrier board structure providing a coil induction function, comprising:
a flexible board having a middle region and two side regions bordering the middle region, the middle region thicker than the two side regions and bulgy downwards, an upper surface of the flexible board being smooth, the middle region provided with a middle hole; at least one upper magnetic coil embedded in the flexible board, close to the upper surface of the flexible board, and having a spiral shape; at least one lower magnetic coil embedded in the flexible board, close to the lower surface of the flexible board, and having a spiral shape; a dielectric layer embedded in the flexible board, penetrated through by the middle hole, and separating the upper magnetic coils and the lower magnetic coils; at least one connection pad configured in the middle region of the flexible board, close to the middle hole, and penetrating the dielectric layer to connect the upper magnetic coils and the lower magnetic coils; and at least one gold finger provided on the two side region of the flexible board and electrically connected to the upper magnetic coils, wherein the upper magnetic coils and the lower magnetic coils are around the middle hole, the gold finger, the upper magnetic coils, the connection pads and the lower magnetic coils are electrically connected, two fold lines are provided on the lower surfaces of the flexible board and at connections of the middle region and the two side regions, respectively, the fold line has a groove shape depressed upwards so as to help the side region to fold upwards or downwards, and the dielectric layer embedded in the flexible board is broken at the fold lines due to the groove shape such that the dielectric layer in the middle region and the dielectric layer in the side region are not physically connected. |
