Method for automatically sorting LEDs according to electrostatic resistance and system using the same

摘要

Disclosed is a method for automatically sorting LEDs (light emitting diode) according to electrostatic resistance and a system using the same. The system includes a transport carrier for laying LEDs and passing LEDs through an electrostatic discharging zone, a lightening evaluating zone, and a sorting zone in sequence. An electrostatic discharging device discharges an electrostatic power to the LED in the electrostatic discharging zone. Furthermore, a lighting device inputs a lightening power to the LED in the lightening evaluating zone. Moreover, an evaluating device in the evaluating zone generates an evaluating signal to a sorting device in the sorting zone according to the lighting condition of the LED for allowing the sorting device to sort LEDs according to electrostatic resistance. Thereby the reliability both for the failure rate and the detection rate can be raised.

主权项

1. A method for automatically sorting LED according to electrostatic resistance, comprising steps of:
(a) laying, on a transport carrier, a LED to be tested; (b) transporting the LED for passing the LED through an electrostatic discharging zone, a lightening evaluating zone, and a sorting zone in sequence along a detecting path by the transport carrier; (c) in the electrostatic discharging zone, discharging an electrostatic power with a detecting voltage to the LED on the transport carrier through an electric conducting member by an electrostatic discharging device during an electrostatic discharging period; (d) in the lightening evaluating zone, inputting a lightening power to the LED on the transport carrier via an electrode of the LED electrically connecting with the electric conducting member by a lighting device and transmitting an evaluating signal to a sorting device according to the lighting condition of the LED; and (e) in the sorting zone, sorting the LED for moving the LED from the transport carrier to a collecting zone by the sorting device according to the evaluating signal.