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Breakthrough in LED Display Technology: Fuzhou University Reveals Light-Emitting Display Device Based on Special-Shaped nLED Grains

Strategic Insights

— 1 min read

Researchers at Fuzhou University have made a significant discovery in the field of integrated semiconductor light-emitting and display technology. Their invention, a light-emitting display device based on special-shaped nLED grains, has the potential to revolutionize the display industry. This innovative technology addresses the challenges of transferring grains with different light-emitting colors onto a circuit substrate with mechanical tools and ensuring accurate electrical contact between the grains and drive electrodes.

Key Takeaways:

  • The invention adopts special-shaped nLED grains to ensure that when a grain sheet is disposed between electrode substrates, a luminous layer of each nLED grain is always partially parallel to the electrode substrates and perpendicular to an electric field, greatly improving electrical coupling efficiency and luminous efficiency.
  • The special-shaped nLED grains comprise spherical, polygonal, and rod-like shapes, each with a size of 1 nm-1 mm, and can have one luminous layer or multiple luminous layers stacked in parallel.
  • The light-emitting display device includes an upper drive electrode substrate, an upper drive electrode, special-shaped nLED grains, a lower drive electrode, and a lower drive electrode substrate, which are sequentially arranged from top to bottom.
  • The invention provides an AC drive control module with two ends connected to the upper drive electrode and the lower electrode, allowing the nLED grains to be lighted up through electromagnetic coupling.
  • The light-emitting display device can be made with transparent electrodes and has an insulating dielectric layer to avoid direct electrical contact between the nLED grains and the electrodes.

Statistics:

  • The size of the special-shaped nLED grains ranges from 1 nm to 1 mm.
  • The luminous layer of each nLED grain can be partially parallel to the electrode substrates and perpendicular to an electric field.
  • The frequency of the alternating voltage can range from 1 Hz to 1000 MHz.
  • The duty cycle of the alternating voltage is controllable.
  • The light-emitting display device can have a plurality of special-shaped nLED grains disposed between every two pixel electrodes.

Sources:

  • Guo, Tailiangi. Light-emitting display device based on special-shaped nLED grains. U.S. Patent Number 12446365, filed August 31, 2020, and published online on October 14, 2025. Patent URL (for desktop use only): https://ppubs.uspto.gov/pubwebapp/external.html?q=(12446365)&db=USPAT&type=ids
  • NewsRx LLC, 2025, "Patent News -- Light-emitting display device based on special-shaped nLED grains"

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