Electrical access for electrical lapping guides
US5494473A · kind A · utility
59Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1993 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Jul 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49036
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a new method and apparatus for electrically accessing a lapping sensor positioned along a row of slider sites on a wafer. The apparatus for accessing the lapping sensor may be positioned outside of the boundaries of the slider sites. The apparatus may also provide top conductors electrically connecting target pads to contact pads. The process for lapping rows of slider sites includes coupling a measurement device to a target pad, coupling a lapping sensor to the top conductor, and lapping the row until the measurement device detects a predetermined signal from the lapping sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.