#Japan #microLED #Kusatsu #IntraPhoton #Akasaki Award

IntraPhoton's CTO Honored with the Akasaki Award

In a significant achievement for the field of microLED technology, Prof. Yasufumi Fujiwara, the CTO and co-founder of IntraPhoton, has been awarded the esteemed Akasaki Award for his groundbreaking research. The award ceremony took place on March 15, 2026, at the Oookayama Campus of Tokyo Science University during the 73rd Spring Academic Conference of the Japan Society of Applied Physics.

The Akasaki Award is named in honor of Dr. Hiroshi Akasaki, a Nobel Prize-winning researcher renowned for his contributions to blue LED technology. This prestigious accolade recognizes researchers who make significant contributions in the field of compound semiconductor electronics. Prof. Fujiwara’s research focuses on the creation of semiconductor intracenter photonics and its social implementation, which has been deemed pivotal for advancing next-generation red microLED technology and the development of innovative monolithic full-color microLED displays.

Groundbreaking Research in MicroLED Technology

Prof. Fujiwara’s award-winning lecture highlighted his research findings that serve as essential technological bases for achieving ultra-high-definition microLED displays required for the AR/VR sectors. His work illustrates the potential to attain high-precision microLED displays by leveraging the scientific principles underlying semiconductor intracenter photonics.

In the early stages of his research, Prof. Fujiwara began by studying the optical properties of metal elements in compound semiconductors. His investigational journey included significant breakthroughs, such as enhancing the emission intensity of GaAs with rare earth element doping by approximately 100 times through localized structural control. This significant finding led to the successful demonstration of current-induced Er emission (1.54µm), marking a world-first achievement in this domain.

Eventually, his research transitioned to Eu-doped GaN materials, where he uncovered critical efficiency factors that govern energy transport mechanisms, establishing a foundation for new photonic devices across various applications, including narrow-band emission LEDs and high-stability light sources.

The Three Generations of MicroLED Architecture

The innovative discoveries made by Prof. Fujiwara advocate for a new architecture in microLED displays. The evolution of microLED technology can be categorized into three generations:

1. First Generation: RGB Physical Stacking
Initial attempts at achieving full-color displays involved physically stacking separate RGB LEDs. However, this method faced numerous challenges, including complex manufacturing processes, difficulties in maintaining positional accuracy, and decreased efficiency for red emits at smaller scales.

2. Second Generation: InGaN Monolithic Stacking
To overcome first-generation challenges, the second generation proposed a monolithic structure on the same substrate. This, however, brought forth challenges related to crystal defects and wavelength variation, making the technology less viable for practical applications.

3. Third Generation: GaN:Eu Monolithic Stacking
With a convergence of advances from both previous generations, IntraPhoton has pioneered the third-generation architecture. Utilizing GaN:Eu materials allows for stable high-quality crystal growth while overcoming the limitations posed by InGaN materials. Moreover, the architecture supports larger RGB pixel configurations, increasing design flexibility.

The Future Impact of MicroLED Technology

With the establishment of the third-generation microLED architecture, IntraPhoton aims to kickstart a wave of innovations. Prof. Fujiwara expressed his gratitude towards fellow researchers and students for their continuous support, emphasizing his intention to transition fundamental research into practical applications through commercial ventures.

As the microLED technology continues to advance, experts predict that its integration into AR/VR displays may revolutionize the industry, similar to the transformative impact blue LED technology had on semiconductor lighting. The advent of high-resolution microLED displays stands to redefine how we interact with digital content, heralding a new era in display technology.

Contact Information

For inquiries about Prof. Fujiwara's research or IntraPhoton, please contact:
IntraPhoton Co.
Email: [email protected]

About IntraPhoton

Founded on October 6, 2025, IntraPhoton is situated in Kusatsu City, Shiga Prefecture, dedicated to the exploration and development of next-generation microLED technologies.