eLux reaches important milestones in the drive to commercial development of microLED displays.

eLux reached two important milestones in the drive to commercial development of microLED displays.

Optimization and automation of the fluidic assembly process with selective harvest of microLEDs has produced a 12.3” microLED display with a natural yield of 99.987%.

An automated fluidic assembly tool manufactured by an accomplished display panel tool maker is operational in the eLux prototype fab located at Taiwan.

The 12.3” demonstration display with 99.987% natural yield consisted of 518,400 GaN microLEDs assembled in 10 minutes for an assembly rate of 3.1 million devices per hour. There were 34 failing subpixels, of which 33 could be laser repaired to achieve after repair defectivity approaching one part per million.

Given that a 4K television has 8.3 million pixels this result is approaching the quality level require for a microLED television. Of the 34 defective sites 19 were caused by shorted microLEDs so additional refinement of the inspection and selective harvest processes will be required to produce defect free displays that do not require repair.