Developing Better Metrics for LED Manufacturing

We've developed fast in-line testing for sorting/binning/grading in multiple dimensions to improve LED manufacturing yield. We've also introduced C-Parameters as a new metric to quickly digest and compare spectral power distributions. Pairing Controlled Energy Testing with fast in-line testing brings clarity to variations through consistent power excitation of each light-emitting device.

Products

Cube 7010

Cube 7010 is an integrated high speed LED Test and Analysis System including an I-V source/analyzer for driving LEDs, spectroradiometer for measuring optical output, and a Windows ® PC loaded with Op-Test Software Suite. Cube 7010 comes with our new color metric, C-Parameters, for easy distinction of minute differences in spectral power distributions.

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"The best data comes from testing the right things the right way."

Technology

C-Parameters: A New Way to Describe Color

C-Parameters takes the physics based spectrum of the light emission of an LED and expresses it in several finite numbers. Former color spaces and color measurement methods lose information as they characterize the spectrum, but with C-Parameters, a full-spectrum of LEDs is expressed in real numbers. The C-Parameters allows easy comparison and trends to be found in the variations of spectral power distributions - due to process variation or just to find the right LED’s for your application.

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Technology

Controlled Energy Testing: Clarity

Controlled energy provides an alternative to constant current driving of LED’s that brings clarity to tests run across wafers. Process variations lead to a Vf spread across wafers and with Controlled Energy Testing current is corrected in order to always consistently provide the same power to each device, leading to more consistent optical power measurements.

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