Other potential applications the company illustrated on its website included illuminating logos on mobile phones, lighting installations on walls, smart watches and wristband notifications. An innovative technology has been invented to actually print light on paper using LED technology. It could become a very common technology in the future that people would eventually be able to print and design their own lights. Light sources or bulbs are not required in Rohini's Lightpaper solution.Ī potential application for the paper thin LED is printing illuminating lampshades that would not require additional light sources or bulbs, Smoot said. The diodes are randomly dispersed onto the material, and light up when connected to an electronic current, said the company’s Chief Executive Officer Nick Smoot.
(All photographs courtesy of Rohini)Īccording to a Fast Company report, Rohinni is using ink and small LED lights to print “red blood cell” sized diodes onto a conductive layer.
Lightpaper, billed as the thinnest LED lighting in the world. Lightpaper is billed as an innovative way to print lighting and apply it to any surface, in any shape and for any situation. Not an insurmountable task, a second version of Lightpaper is likely a few months out.Rohinni, an Idaho-based company is introducing the world’s thinnest LED lighting, the Lighpaper. Smoot explained that for a lot of applications, this won’t matter, but the challenge being worked on currently is to get specific placement of the diodes-to produce completely even light. This can cause a shimmering, or starry night effect. Right now, they aren’t distributed evenly on the printed surface. The big problem with the product’s current, version one, is how it places the LEDs when printed. Of course, there is always a catch with every magical new technology: It will be interesting to see how this matches up with OLED pricing.Īnd “paper” certainly seems to be a misnomer: I’m guessing they have to encapsulate it in some sort of non-conductive plastic coating to seal the die from static discharge. It also depends on advances in conductive ink (which I’ve discussed in a few posts here, here and here). Such is the progress for LEDs: This concept depends on LED wafer production dropping so much in price that huge quantities of ultra-small die can be produced (where there is lots of wasted epitaxy due to the kerf of making all those cuts). I assume they’re working on ways to also combine phosphors directly into the mix to generate white light. I’ve heard of this concept before, with the technique being pretty straightforward: Electricity wants to flow through the easiest path, right? So combining low-resistance LED die into a higher-resistance conductive ink means the electricity will try to flow through any LED die available. When current runs through the diodes, they light up. The tiny diodes are about the size of a red blood cell, and randomly dispersed on the material. That object is then sandwiched between two other layers and sealed. In its current state, Lightpaper is manufactured by mixing ink and tiny LEDs together and printing them out on a conductive layer. Rohinni is using a mixture of ultra-small LED die suspended in conductive ink: Via FastCompany, Idaho-based startup Rohinni is demoing a new application of LED lighting they are calling “Lightpaper”.
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