Method of measuring slider resistance of different types of row bar with a common tester
US8471579B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Mar 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2601
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring slider resistance of different types of row bar with a common tester comprises judging the type of the row bar, if the row bar is femto-type row bar, supplying a first voltage to the front pins, and supplying a second voltage that is unequal to the first voltage to the back pins, thereby obtaining resistances of the sliders; if the row bar is shunting-type row bar, supplying a third voltage to the front pins which contact the test pads, and supplying a fourth voltage that is unequal to the third voltage to the front pin that contacts the common test pad, thereby obtaining resistances of the sliders. The present invention can measure two different types of row bar with a same common tester, which can reduce the downtime of machine and the manpower, and prevent the probe card from being damaged without a frequent disassembly and switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.