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Porotech unveils World first in MicroLED displays

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First monolithic full colour microdisplay marks a new industry milestone

Porotech, a UK company focused on microLED and GaN semiconductor technology, has announced the world's first single-panel, full-colour microdisplay suitable for augmented reality (AR) applications.

The microdisplay is based on Porotech's Dynamic Pixel Tuning (DPT) technology, where DPT microLED pixels can emit any visible colour when driven with a specific current density. Porotech will be unveiling the 0.26-inch monolithic full-colour microdisplay, along with an AR development platform, during the SID Display Week in Los Angeles from 21-26 May 2023.

Having already demonstrated how a DPT pixel can create a full range of visible colours, Porotech is now unveiling the new innovative active-matrix 0.26-inch microLED display offering 1280x720 resolution, which utilises a proprietary driving method developed by Porotech that rapidly displays red, green and blue light to enable a full-colour RGB display and richly saturated colours.

Based on existing backplane technology, the 3.5-micron microLEDs are fabricated on a 4.5-micron pixel pitch. Porotech's microLEDs emitter size can be larger while keeping the resolution because subpixels are no longer required. With Porotech's DPT technology, full colour native microLED displays can now be unlocked with a single LED epitaxial growth and a one-step wafer-to-wafer bonding to the CMOS backplane. This removes complex and low yield manufacturing barriers inherent with alternative approaches.

MicroLEDs represent the leading viable solution for the future of displays in AR glasses, offering benefits such as improved brightness, energy efficiency, contrast ratio, longer device lifetimes, reduced display size, along with greater pixel densities and resolutions. Many AR developers have been eagerly searching and waiting for a single-panel full-colour solution with high pixel density and minimum form factor.

Porotech founder and CEO Tongtong Zhu said:" This new single panel full colour microdisplay marks a significant milestone for Porotech and the entire microLED industry, as only DPT pixels can meet the specification, performance, reliability, and cost required for AR glasses. Also, Porotech's DPT technology opens the market for additional display applications using microLEDs beyond AR/VR including smart watches, smart phones, tablets, flat panel TVs to large panel displays for commercial outdoor signage.

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