Integrated lead suspension (ILS) for two-dimensional magnetic recording (TDMR) disk drive
US9196266B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2014 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Jul 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interconnect between the read/write circuitry and the read/write head in a magnetic recording hard disk drive (HDD) for two-dimensional magnetic recording (TDMR) has the read sensor signal lines located on a lower level of a bi-level structure of conductive lines. Common return lines are located on an upper level above the signal lines and on the lower level between the signal lines. All of the return lines on the upper level are connected to one another by cross-connect lines, and vias are located along the interconnect and connect the upper return lines with the lower return lines and with the ground plane of the interconnect's electrically conductive substrate. The interconnect is a coaxial-like interconnect because the return lines are located around each signal line and thus shield each signal line from the other signal lines, much like the outer conductive shield of a coaxial cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.