Handler for sorting packaged chips
US7557565B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2007 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Aug 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2893
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A handler for sorting semiconductor chips after they have been tested includes a loading unit for loading chips to be tested and an unloading unit for unloading chips that have been already tested. Chips arrive in trays at the loading unit, and a loading picker removes the chips from the tray. When a tray is empty, it is moved over to the unloading unit by a tray transfer mechanism so that tested chips can be placed back into the tray. The tray transfer mechanism rotates the empty trays upside down as it is moved from the loading unit to the unloading unit to ensure that the tray is completely empty before it arrives at the unloading unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.