Extended reality (XR), the next generation smart devices, is about to trigger another billion-dollar market. While the most important puzzle, full color microdisplay, is yet to meet the desired requirements. By innovating the MicroLED chip design and applying advanced packaging techniques, Rayleigh Vision has developed the ultimate solution, MicroLED stacking technology. This enables ultra-high full-color display resolution, maintain all advantages of MicroLED over other competing technologies, and most importantly, this solves the mass producibility of MicroLED. Our technology will boost the display performance and accelerate the commercialization of XR.

This talk will explore the wide diversity in new microLED chip designs, including variations in size and geometry of the LED chip and contact pads, wavelength, luminance, and other properties, and the implications for accurate and high throughput EL inspection.

MicroLED displays face a critical challenge as LED efficiency drops with decreasing chip size. The surface-to-volume ratio increase in smaller LEDs impacts device performance, particularly in III-V compound semiconductors prone to poor-quality oxides when exposed to oxygen. This issue, notably at the mesa sidewall, contributes to diminished light output. Comptek Solutions addresses this using Kontrox, an innovative passivation technology, which transforms III-V surfaces into high-quality crystalline oxides, resolving defects and enhancing surface energy. This novel atomic-level surface engineering technique results in a power-efficient microLED display with improved performance and pixel sizes.

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iBeam Materials is developing a revolutionary new technology to make paper-thin, ultra-flexible and robust MicroLED displays. The display products are enabled by the ability to make large area flexible sheets of LED epi at low cost. The sheets of LEDs, produced by roll-to-roll manufacturing, will allow large-area monolithic integration of LEDs together with sensors, driver circuitry and other active devices in a single device sheet. In the past year iBeam has scaled up the ion-beam template process for LEDs from ½” reels to 6-inch wide rolls of metal, extendable in the future to 20-inch and wider rolls.

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The Nobel Prize in Chemistry was recently awarded for the invention of quantum dots, in no small part due to their incredible impact on the display industry. QLED displays brought nanotechnology to televisions, as an add-on layer to LEDs. Nanowire LEDs promise to push nanotechnology further into the display device architecture, with the primary electroluminscent light source being built of nanotechnology. Already, scientific literature shows that these nanoLEDs are the most efficieny LEDs in the 1um size regime, and NS Nanotech is taking the next steps towards commercializing this very promising nanotechnology.