Porous-GaN material platform developer Porotech has developed a single-panel full color MicroLED microdisplay, based on its Dynamic Pixel Tuning technology. The display is 0.26" in size, with a resolution of 1280x720.
The display is produced using a monolithic process, with a single LED epitaxial growth and a single-step wafer-to-wafer bonding to the CMOS backplane. The company says that the process is simple and that it offers high yields.
The display is made using the company's DynamicPixelTuning technology, that makes it possible to create full-color or tunable-color monochrome displays using identical pixels from a single wafer. The company's PoroGaN material allows a modulated current to be leveraged to emit visible light covering the entire color spectrum on a single microLED chip. There are many advantages to a single-pixel architecture - simplified production, pixel size can be larger (no need for subpixels), and more.
In April 2022, Porotech demonstrated 1920x1080 monochrome microdisplays, that achieved over 2 million nits of brightness. The company said that that it was the first to demonstrate all three-color light emitting elements made from a single material and toolchain. Those displays included Porotech's native red InGaN display at 614-625nm wavelength. Later in 2022, the company demonstrated a full-color microLED microdisplay for the first time, made from the company's GaN LEDs, and so based on a native red LED. The company says that this is the world's first public demonstration of such a display.
In 2021, Porotech announced a partnership with JBD for the supply of porous gallium nitride (GaN) epiwafers. In February 2022 Porotech raised $20 million in its Series A financing round. In May 2022 the company announced its DynamicPixelTuning technology.
