Samsung Electronics Co. Ltd. Files Patent for Innovative Display Panel Technology

Strategic Insights -

Samsung Electronics Co. Ltd. has filed a patent for an innovative display panel technology that utilizes quantum dots to enhance the color conversion efficiency of micro-LED devices. The patent, filed on November 27, 2023, and published online on October 14, 2025, details the design and production method of a display panel that incorporates a wavelength conversion structure prepared using an ink composition. This technology is poised to revolutionize the display industry with its improved photo-efficiency and absorption ratio.

Key Takeaways:

  • The patent describes an ink composition that provides a quantum dot color filter for high-definition micro-LED devices, enhancing their color conversion efficiency.
  • The display panel incorporates a wavelength conversion structure prepared using the ink composition, which is designed to improve the photo-efficiency and absorption ratio of the device.
  • The patent details the design and production method of the display panel, including the fabrication of a partitioned base structure with adjacent sidewalls and a quantum dot composite that fills the volumetric space defined by the height and bottom surface of the partitioned base structure.
  • The quantum dot composite is configured to emit light with a full width at half maximum of less than or equal to about 45 nanometers.
  • The display panel further comprises an absorption type color filter layer disposed over the color conversion region and a protective layer formed between the LED-light emitting element and the quantum dot composite.
  • The ink composition includes a liquid vehicle and a quantum dot dispersed in the liquid vehicle, with a viscosity of less than or equal to about 4.5 centipoise and a contact angle of the ink composition with respect to a silicon substrate greater than or equal to about 20 degrees and less than or equal to about 40 degrees.
  • The quantum dot composition has an amount of 10 weight percent to 30 weight percent based on a total solid content of the ink composition, and further comprises metal oxide particles in an amount greater than or equal to about 0.5 weight percent and less than or equal to about 5 weight percent based on the total solid content of the ink composition.

Statistics:

  • The display panel incorporates a wavelength conversion structure prepared using an ink composition to enhance the color conversion efficiency of micro-LED devices.
  • The quantum dot composite fills the volumetric space to occupy greater than or equal to about 70 percent of a vertical cross-section area of the volumetric space.
  • The viscosity of the ink composition is less than or equal to about 4.5 centipoise.
  • The contact angle of the ink composition with respect to a silicon substrate is greater than or equal to about 20 degrees and less than or equal to about 40 degrees.
  • The amount of the quantum dot in the ink composition is 10 weight percent to 30 weight percent based on a total solid content of the ink composition.

Sources:

  • Bae, Min Jong. Display panel and production method thereof. U.S. Patent Number 12446373, filed November 27, 2023, and published online on October 14, 2025.
  • Patent URL (for desktop use only): https://ppubs.uspto.gov/pubwebapp/external.html?q=(12446373)&db=USPAT&type=ids
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