Plessey Semiconductor Achieves Breakthrough in GaN-on-Silicon MicroLEDs

Plessey Semiconductor announced on July 2, 2026, a significant advancement in GaN-on-Silicon MicroLED technology, achieving unprecedented brightness and efficiency.

Plessey Semiconductor Advances GaN-on-Silicon MicroLED Performance Plessey Semiconductor announced on July 2, 2026, a significant advancement in its GaN-on-Silicon MicroLED technology , reporting a breakthrough in device brightness and efficiency. This development, detailed in a company press release, focuses on enhancing the performance characteristics of their MicroLED fabrication process, which leverages standard silicon manufacturing techniques. The company has been a notable player in the MicroLED space, aiming to overcome some of the traditional manufacturing challenges associated with gallium nitride (GaN) epitaxy on sapphire substrates. The significance of this development lies in Plessey's continued push to make GaN-on-Silicon MicroLEDs a viable and high-performing alternative for various display and lighting applications. By utilizing silicon wafer processing, Plessey aims to achieve greater scalability and cost-effectiveness compared to conventional methods. This approach could pave the way for MicroLEDs in a wider range of products, from consumer electronics to automotive displays and advanced lighting solutions. According to Plessey's announcement, the recent progress has resulted in MicroLED devices exhibiting a luminous efficacy exceeding 200 lumens per watt (lm/W) at a drive current of 10 amperes per square centimeter (A/cm²). Furthermore, the company reported achieving a peak wavelength stability of +/- 1 nanometer across a range of operating conditions. These figures represent a notable improvement for GaN-on-Silicon MicroLEDs, particularly in terms of brightness and spectral consistency, which are critical factors for high-quality visual performance and color accuracy in displays. Industry analysts suggest that such advancements in efficiency and consistency are crucial for the broader adoption of MicroLED technology. While MicroLEDs offer superior contrast, brightness, and response times compared to existing display technologies like OLED and LCD, manufacturing yield and cost have remained significant hurdles. Plessey's ability to improve these key performance indicators on a silicon platform could signal a competitive edge for their technology in an increasingly dynamic display market.