Method for automatically sorting LEDs according to electrostatic resistance and system using the same
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United States of America Patent
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Sep 15, 2015
Grant Date -
Jun 26, 2014
app pub date -
Jun 6, 2013
filing date -
Dec 25, 2012
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Abstract
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.
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