Visionox has New Division to Focus on MicroLEDs

Visionox has created a sub-group to focus on commercializing microLED displays and showed a nice looking device at DisplayWeek 2024.

Chris Chinnock for Insight Media at DisplayWeek 24. I’m in the Visionox booth. They’re going to have a new subsidiary. It’s called ViStar and it’s kind of a spin-off from the company to focus specifically on microLED technology.

Their demo here is an 88 in, 0.5 mm pitch microLED display. Here’s some of the specifications on it. Over here as you can see what they call a splicing display, which means it has a zero-bezel edge. They actually metalize around the side of that with contacts, which is exactly the way Samsung did it as they explained at CES a year and a half ago I guess, to facilitate the tiling of their modules. So 25 micron full color devices that use microLED about 8 or 10 microns in size. These are discrete LEDs so RGB from separate wafers so it’s not color converted. What they’ve done is they package this into a 14.5 in module over here. But this is actually composed of a 2×8 matrix of smaller tiles. These are all LTPS on glass active-matrix backplanes.

Mass transfer is done with a stamp process. They say they can get to 100% yield but of course that means they’re going to have to do some repair. I think I saw a press release that talked about 99.95% yield, I think. I hope I’m not confusing that with someone else. There’s no specification on color gamut but it should be good. You can also feel the heat from this thing. It’s still running a little warm. They don’t specify the luminance, although it does seem to be bright and a very nice display. I don’t see a lot of color shift going from side to side either.

They’d also talked about a special algorithm for evaluating the LEDs and binning them properly to increase the uniformity. Again, a trick that Samsung had talked about 18 months ago on their microLED TVs. The company will buy the LED wafers themselves and then they characterize those, dice them and do the assembly, the mass transfer, as well as the build-up of the module.

So, their business model is to sell those modules, those 14.5 in modules, to end customers who can then integrate them into any size display. Maybe they add tuners and make it a TV with an interface, or perhaps it becomes a digital signage product, whatever the end customer wants to do with it. That’s all I know. Chris Chinnock here for Insight Media.

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