Wafer fabrication for thermal pole tip expansion/recession compensation
US6731463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Apr 7, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The slider and method of the present invention relate to a slider for a disc drive. The slider includes a substrate having a cavity and a filler within the cavity. The slider further includes a transducer that is positioned near the filler. The design facilitates controlling the relative thermal expansion between the transducer and substrate of the slider that is near the transducer. Compensating for the thermal expansion of the transducer provides a more consistent fly height of the slider during operation of the disc drive. In addition, the design adjusts the air-bearing surface of the slider such that the transducer does not extend below the rest of the slider as the transducer expands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.