Light-emitting element detection and classification device
US8519458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2011 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Nov 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light-emitting element detection and classification device includes a rotation unit for transporting a plurality of light-emitting elements, a chip detection unit, and a chip classification unit. The rotation unit includes at least one rotary turntable, a plurality of receiving portions formed on the rotary turntable, and a plurality of suction-exhaust dual-purpose openings respectively disposed in the receiving portions, each receiving portion selectively receives at least one of the light-emitting elements. Each light-emitting element is an LED package chip having a positive electrode pad and a negative electrode pad disposed on the bottom side thereof. The chip detection unit includes at least one chip detection module adjacent to the rotation unit for detecting each light-emitting element. The chip classification unit includes at least one chip classification module adjacent to the rotation unit for classifying the LED package chips that have been detected by the at least one chip detection module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.