A research team led by Professor Li Fushan from Fuzhou University, in collaboration with the Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, has developed an ultrahigh-resolution quantum dot display technology for augmented reality (AR) and virtual reality (VR) applications. The findings were published online in Nature on April 2nd, 2026, under the title “Nanoscale transfer-printed full-colour ultrahigh-resolution quantum dot LEDs”. Lin Lihua, a young faculty member at Fuzhou University, serves as the first author, with Professor Li as the corresponding author. This marks the first time that an information science discipline at Fuzhou University has published a paper as the primary affiliation in Nature.
The research addresses a critical bottleneck in the evolution of display systems for AR and VR. As these technologies advance rapidly, displays are expected to deliver ultrahigh resolution, high color fidelity, and extended operational lifespans. Achieving “retina-level” displays with pixel densities exceeding 10,000 pixels per inch has become a key industry target. However, when pixel dimensions shrink to the micro- or nanoscale, conventional fabrication methods suffer from insufficient patterning precision, severe color crosstalk, and pronounced declines in device efficiency and stability. The team tackled these challenges through systematic innovation in both nanofabrication processes and device physics.
The breakthrough rests on two synergistic advances. On the fabrication front, the team developed a “hard nanoimprint – integral inversion transfer” technique using reusable high-precision silicon molds to achieve high-fidelity replication of red, green, and blue quantum dot pixel arrays at the nanoscale. A “dual-force” modulation strategy was introduced to achieve dense, uniform quantum dot packing within micro–nano pixels, substantially enhancing emission uniformity and device performance. A novel protective layer structure was also designed to effectively eliminate material residues and color crosstalk, enabling the construction of high-purity, high-consistency full-color pixel arrays. On the physics front, the team systematically revealed, for the first time, that nonuniform electric field distribution – particularly pronounced field concentration at pixel edges – is a key limiting factor causing energy loss and performance degradation in nanoscale pixel structures. To address this, the researchers introduced nanoscale titanium oxide to modulate the internal dielectric properties of the device, thereby homogenizing the electric field distribution and fundamentally enhancing efficiency and stability.
The resulting full-color quantum dot light-emitting devices achieved record-setting performance: red devices reached an external quantum efficiency of 26.1% and an operational lifetime exceeding 60,000 hours, green and blue devices showed marked performance improvements, and red – green – blue pixelated white devices achieved an efficiency of 10.1%, setting a new performance benchmark for high-resolution quantum dot displays. Furthermore, the team integrated the technology with integrated circuits to successfully fabricate an active-matrix display prototype with independently addressable pixels, validating its practical application potential in real display systems. The study achieves a systemic breakthrough in both fabrication processes and device physics for ultrahigh-resolution quantum dot displays, establishing a direct linkage among structural design, electric field modulation, and performance enhancement, thereby providing a critical theoretical foundation and technological support for next-generation near-eye display technologies.