Radiant Vision joins ranks of MicroLED industry group

Test equipment maker Radiant Vision Systems has joined the MicroLED Industry Association (MLIA), an industry body set up to speed up the adoption of microLED display technologies.

Close-up view of OLED display subpixels
Close-up view of OLED display subpixels

Formed in 2022, the MLIA brings together companies, researchers, and organizations active in the microLED as well as providing a forum for solving common technology issues, fostering cooperation, and sharing relevant resources.

“I am truly happy to have Radiant Vision Systems join the MicroLED Industry Association,” said Ron Mertens, MLIA managing director. “As a leading company in its field, and one that has always displayed a commitment to industry growth and sharing knowledge for the benefit of the industry, I am sure Radiant will be an invaluable member of the association.”

A pioneer in test and measurement for the display industry, Radiant has developed solutions for quantifying the output of emissive displays for decades, including the first inspection system for pixel-level measurement of full-color OLED production test applications in 2004. Radiant has continued refine these methods to measure increasingly high-resolution displays with greater pixel densities. With the emergence of new emissive display technologies,

In recent years, Radiant has adapted its display testing solutions for microLED display testing.

Like OLED, microLED quality relies on the consistent output of individual light-emitting subpixels.

Inconsistencies in microLED brightness or color, inaccuracies during wafer-level transfer, and other fabrication issues can result in displays with a noticeable non-uniform or speckled appearance.

Radiant’s pixel-level measurement methods allow imaging systems to capture highly accurate values of luminance and chromaticity at each emissive subpixel.

Radiant’s patented imaging colorimeter and photometer technologies are capable of measuring all individual microLED subpixels in a display at once to calculate discrepancies between subpixel output. This enables output to be adjusted to uniform values at all display bright states—a process called pixel uniformity correction (PUC) or demura.

“The more efficiently microLED technologies can be manufactured, the more viable microLED displays become for commercialization, in terms of market cost and availability. This efficiency relies, in part, on testing and correcting pixel-level emissions during manufacture,” said Doug Kreysar, CEO of Radiant Vision Systems. “Radiant brings our extensive pixel-level measurement expertise to the microLED industry to help manufacturers dramatically improve throughput of high-quality displays, accelerating market penetration.”

Radiant will join a number of other leading display industry test companies who are already part of the MLIA including Coherent, Ennostar and InZiv.