Disk drive suspension via formation using a tie layer and product
DCFirst Claim
1. A disk drive suspension interconnect comprising a stainless steel grounding layer, a synthetic organic polymer layer on the stainless steel grounding layer, the synthetic organic polymer layer having an aperture therethrough, the synthetic organic polymer layer having walls defining the aperture therethrough, the organic polymer layer walls having wall slopes of less than 90 degrees, a chromium layer sputtered directly onto the stainless steel grounding layer within the aperture for facilitating an electrical contact to the stainless steel grounding layer within the aperture, a metal conductive layer bonded to the sputtered chromium layer within the aperture, an electrodeposited copper layer on the synthetic organic polymer layer and the metal conductive layer, and a circuit component electrically connected to the electrodeposited copper layer, the sputtered chromium layer and the metal conductive layer being disposed at least partially within the aperture of the synthetic organic polymer layer, the aperture being substantially filled with metal without the need for conductive adhesive within the aperture, the chromium layer and the metal conductive layer and the electrodeposited copper layer together providing an electrical ground path from the electrical component to the stainless steel grounding layer thereby grounding the electrical component to the stainless steel grounding layer.
2 Assignments
Litigations
1 Petition
Accused Products
Abstract
A disk drive suspension interconnect, and method therefor. The interconnect has a metal grounding layer, a metal conductive layer and an insulative layer between the metal grounding layer and the conductive metal layer. A circuit component such as a slider is electrically connected to the conductive layer along a grounding path from the circuit component and the conductive layer to the metal grounding layer through an aperture in the insulative layer. For improved electrical connection a tie layer is provided through the insulative layer onto the grounding layer in bonding relation with the ground layer. A conductor is deposited onto both the conductive metal layer and the tie layer in conductive metal layer and tie layer bonding relation, and the circuit component is thus bonded to the grounding layer by the conductor.
79 Citations
20 Claims
- 1. A disk drive suspension interconnect comprising a stainless steel grounding layer, a synthetic organic polymer layer on the stainless steel grounding layer, the synthetic organic polymer layer having an aperture therethrough, the synthetic organic polymer layer having walls defining the aperture therethrough, the organic polymer layer walls having wall slopes of less than 90 degrees, a chromium layer sputtered directly onto the stainless steel grounding layer within the aperture for facilitating an electrical contact to the stainless steel grounding layer within the aperture, a metal conductive layer bonded to the sputtered chromium layer within the aperture, an electrodeposited copper layer on the synthetic organic polymer layer and the metal conductive layer, and a circuit component electrically connected to the electrodeposited copper layer, the sputtered chromium layer and the metal conductive layer being disposed at least partially within the aperture of the synthetic organic polymer layer, the aperture being substantially filled with metal without the need for conductive adhesive within the aperture, the chromium layer and the metal conductive layer and the electrodeposited copper layer together providing an electrical ground path from the electrical component to the stainless steel grounding layer thereby grounding the electrical component to the stainless steel grounding layer.
- 8. A disk drive suspension interconnect comprising a stainless steel grounding layer, an insulative layer on the stainless steel grounding layer, the insulative layer having an aperture therethrough, a Monel metal layer sputtered directly onto the stainless steel grounding layer within the aperture for facilitating an electrical contact to the stainless steel grounding layer within the aperture, a metal conductive layer bonded to the sputtered Monel layer within the aperture, an electrodeposited copper layer on the insulative layer and on the metal conductive layer, and a circuit component electrically connected to the electrodeposited copper layer, the sputtered Monel layer and the metal conductive layer being disposed at least partially within the aperture of the insulative layer, the aperture being substantially filled with metal without the need for conductive adhesive within the aperture, the Monel layer and the metal conductive layer and the electrodeposited copper layer together providing an electrical ground path from the electrical component to the stainless steel grounding layer thereby grounding the electrical component to the stainless steel grounding layer.
- 15. A disk drive suspension interconnect comprising a stainless steel grounding layer, a synthetic organic polymer layer on the stainless steel grounding layer, the synthetic organic polymer layer having an aperture therethrough, the synthetic organic polymer layer having walls defining the aperture therethrough, the organic polymer layer walls having wall slopes of between 60 and 85 degrees, a chromium layer sputtered directly onto the stainless steel grounding layer within the aperture for facilitating an electrical contact to the stainless steel grounding layer within the aperture, a metal conductive layer bonded to the sputtered chromium layer within the aperture, an electrodeposited copper layer on the synthetic organic polymer layer and on the metal conductive layer, and a circuit component electrically connected to the electrodeposited copper layer, the sputtered chromium layer and the metal conductive layer being disposed at least partially within the aperture of the synthetic organic polymer layer, the aperture being substantially filled with metal without the need for conductive adhesive within the aperture, the chromium layer and the metal conductive layer and the electrodeposited copper layer together providing an electrical ground path from the electrical component to the stainless steel grounding layer thereby grounding the electrical component to the stainless steel grounding layer.
Specification