ALD passivation layers to boost micro-LEDs’ brightness, says Picosun

April 23, 2019 //By Julien Happich
micro-LEDs
Finish provider of Atomic Layer Deposition (ALD) thin film coating equipment, Picosun, reports increased brightness for micro-LEDs passivated with its equipment.

Micro-LEDs are often seen as the next-gen display technology, potentially replacing LCDs (liquid crystal displays), OLEDs (organic light-emitting diodes) or conventional LEDs (light-emitting diodes). Today micro-LEDs are typically used for small screens such as those used in tablets, smartphones and smart watches, and but first large area displays have also been demonstrated.

Still, the micro-LED technology has certain drawbacks that hinder its full-scale commercial breakthrough. Some of the steps in the manufacturing process of the green, blue and red micro-LED pixels easily cause damage to their delicate nanometer-scale structures, which leads to loss of light intensity.

ALD has now been proven to effectively fix these damages, not only restoring the light intensity but actually boosting it to superior levels. At a Picosun customer site, National Chiao Tung University (NCTU), Taiwan, light-emitting intensity of micro-LEDs has been enhanced by 143.7% by using ALD passivation layers deposited with Picosun’s ALD equipment.

“NCTU has been a prestigious customer and key partner for years. We are glad that our ALD solutions have enabled this impressive performance boost to their micro-LEDs. Micro-LED technology has immense potential to disrupt the solid state lighting market and our Asian customers, both in industries and R&D, will surely lead the forefront of this development,” commented Mr. Edwin Wu, CEO of Picosun Asia Pte. Ltd.

Picosun - www.picosun.com


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