Recently, Saphlux, Inc. has officially unveiled its 0.39-inch full-color Micro-LED display module, namely the T1-0.39’’ RGB model.
0.39-inch Full-color Micro-LED Display (T1-0.39’’ RGB)
It is reported that this marks the first commercial adoption of Nanopore Quantum Dot (NPQD) technology in the field of full-color micro-displays. The market-proven quantum dot mLED technology has been successfully adapted for small-sized micro-display applications, representing a major technological breakthrough in AR and VR display industries.
Dr. Chen Chen, CEO of Saphlux, stated that in laboratory tests, this 0.39-inch NPQD prototype innovatively integrates red and green quantum dots (QDs) into nanopore-structured gallium nitride, namely the NPQD structure. It delivers an ultra-high white light brightness of up to 250,000 nits alongside an ultra-wide color gamut.
White Light Brightness of T1 0.39 NPQD
More importantly, by combining NPQD technology with a photon conversion efficiency of 67% and high-efficiency blue mLED chips supplied by strategic partners, the T1 solution achieves groundbreaking display performance. It effectively addresses the efficiency and yield bottlenecks existing in mainstream full-color AR screens and retina-level Micro-OLED panels such as those adopted by Vision Pro.
Leveraging its proprietary patented NPQD technology, Saphlux realizes quantum dot color conversion on blue-light gallium nitride mLED wafers smaller than 2 microns to produce red and green mLED chips. These chips are integrated with in-situ blue mLED chips on the same substrate, forming an innovative single-chip full-color light engine.
Revolutionary Red Light Brightness, Efficiency and Color Performance Enabled by NPQD
Compared with conventional quantum dot solutions, Saphlux’s NPQD structure captures a larger proportion of blue photons and converts them into narrow-FWHM red light. It delivers higher red light efficiency than traditional AlGaInP-based mLED devices and greatly mitigates thermal decay issues.
This technology achieves vivid red light output with sub-2-micron sub-pixel size, 625nm red light wavelength and 22nm full width at half maximum. In the future, it is expected to enable HDR visual performance and full Rec.2020 color gamut coverage for consumer-grade display products.
T1-0.12’’ Red Light Engine Based on NPQD Technology
Tackling Red Light Technical Bottlenecks in AR Three-primary-color Light Combination Solutions
"For large-scale popularization of AR glasses, the optical engine must deliver sufficient brightness to fit human visual perception, which has long been restricted by the inherent performance limitations of traditional red mLED materials. Saphlux is committed to solving the core issues constraining the efficiency and reliability of red mLED products via NPQD technology," Dr. Chen Chen commented.
"We have already completed mass delivery of NPQD-based red Micro-LED products for clients’ public information display projects. Fully verified in practical applications, NPQD technology will set a new benchmark for AR display brightness and usher in a new era of consumer-oriented AR solutions."
Saphlux adopts a single-chip mLED engine design. By matching its self-developed T1-0.12’’ red light modules based on NPQD technology with InGaN-based green and blue mLED chips from partners, the company has developed an innovative AR display solution.
This design grants OEM manufacturers greater flexibility and better overall balance in optimizing AR glasses in terms of optical design, peak brightness, product weight, exterior design and wearing comfort.
"The current mature red NPQD technology can reach a maximum brightness of 2 million nits even at a pixel density exceeding 6000 PPI. We are continuing to optimize NPQD processes to further boost brightness and energy efficiency so as to fully meet diversified demands from the AR market."
Brightness Performance of Red NPQD Array
Dr. Song Jie, Vice President of Technology at Saphlux, pointed out that the company plans to start mass shipment of T1-0.12’’ red light products starting from the fourth quarter of this year.
The exclusive NPQD manufacturing process features excellent compatibility, which can be seamlessly integrated with mainstream high EQE blue mLED production flows and standard CMOS fabrication processes. Clients can either directly purchase finished T1 series solutions from Saphlux, or combine their self-produced blue mLED chips with NPQD technology to independently develop customized optical engines.
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