Magnetic field excitation LED on-line detection method

Magnetic field excitation LED on-line detection method

  • CN 101,552,313 B
  • Filed: 05/22/2009
  • Issued: 02/27/2013
  • Est. Priority Date: 05/22/2009
  • Status: Active Grant
First Claim
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1. the LED online test method of a magnetic field excitation, it is characterized in that:

  • pass the closed-loop path that consisted of by led chip and support, bonding wire with alternating magnetic field and produce alternating current, realize the detection of the quality problems of the gluing and welding schedule that the electrode in functional status, performance parameter and the encapsulation process to led chip is drawn by detecting the characteristics of luminescence that this alternating current excites led chip to produce.

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