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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0429228 (2017-02-10) |
등록번호 | US-9953667 (2018-04-24) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 379 |
A head gimbal assembly has a laminate flexure that includes a metallic conductive layer that includes a plurality of electrically conductive traces that are elongated and narrow and electrically connected to the read head, and a metallic structural layer that is stiffer than the conductive layer. A
A head gimbal assembly has a laminate flexure that includes a metallic conductive layer that includes a plurality of electrically conductive traces that are elongated and narrow and electrically connected to the read head, and a metallic structural layer that is stiffer than the conductive layer. A first dielectric layer is disposed between the structural layer and the conductive layer. A second dielectric layer substantially covers the conductive layer in a flexure tail bonding region that overlaps a flexible printed circuit (FPC). The structural layer includes a plurality of flexure bond pads that are aligned with, facing, and bonded to corresponding FPC bond pads. The flexure bond pads in the structural layer are electrically connected to the electrically conductive traces in the conductive layer by vias through the first dielectric layer. In certain embodiments, the flexure tail is folded upon itself in the flexure tail bonding region.
1. A disk drive comprising: a disk drive base;a disk rotably mounted to the disk drive base;an actuator pivotably mounted to the disk drive base, the actuator including a flexible printedcircuit (FPC) that includes a plurality of electrically conductive FPC bond pads; andat least one head gimbal ass
1. A disk drive comprising: a disk drive base;a disk rotably mounted to the disk drive base;an actuator pivotably mounted to the disk drive base, the actuator including a flexible printedcircuit (FPC) that includes a plurality of electrically conductive FPC bond pads; andat least one head gimbal assembly attached to the actuator, the at least one head gimbal assembly comprisinga read head; anda suspension assembly that comprises a load beam, anda laminate flexure that includes a tongue portion that connects to the read head and a flexure tail that extends to a flexure tail bonding region that overlaps the FPC, the laminate flexure comprising a conductive layer that is metallic and that includes a plurality of electrically conductive traces that are elongated and narrow and electrically connected to the read head, a structural layer that is metallic and stiffer than the conductive layer, a first dielectric layer between the structural layer and the conductive layer, and a second dielectric layer that substantially covers the conductive layer in the flexure tail bonding region;wherein the structural layer includes a plurality of flexure bond pads in the flexure tail bonding region, each of the plurality of flexure bond pads in the structural layer being aligned with, facing, and being bonded to a corresponding one of the plurality of FPC bond pads; andwherein each of the plurality of flexure bond pads is electrically connected to a corresponding one of the plurality of electrically conductive traces by one of a first plurality of vias through the first dielectric layer. 2. The disk drive of claim 1 wherein the structural layer comprises stainless steel, the first dielectric layer comprises polyimide, and the conductive layer comprises copper. 3. The disk drive of claim 2 wherein at least one of the plurality of flexure bond pads of the structural layer includes a gold coating. 4. The disk drive of claim 1 wherein each of the flexure bond pads of the structural layer is bonded to the corresponding one of the plurality of FPC bond pads by an anisotropic conductive film that includes a plurality of electrically conductive beads. 5. The disk drive of claim 1 wherein each of the first plurality of vias through the first conductive layer comprises a hole through the first conductive layer that is filled with an electrically conductive material. 6. The disk drive of claim 1 wherein the flexure tail is folded upon itself in the flexure tail bonding region, so that the conductive layer is an inner layer disposed between flexure bond pads of the structural layer in the flexure tail bonding region, the structural layer being disposed externally on both sides of the conductive layer in the flexure tail bonding region, with the flexure bond pads of the structural layer being outward facing. 7. The disk drive of claim 6 wherein the second dielectric layer includes a second plurality of vias, each comprising a hole through the second conductive layer that is filled with electrically conductive solder.
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