Patent Reveals Method for Setting Black Voltage of Display Panel

Strategic Insights -

A new patent has been published describing a method for setting the black voltage of a display panel to reduce power consumption by considering the color area of the display. Inventor Pyo, Sibeak, has filed the patent, No. 12444374, on June 27, 2024, and it was published online on October 14, 2025. The patent is assigned to Samsung Display Co. Ltd. and outlines a system for measuring the luminance and color area of a test image displayed on the display panel.

Key Takeaways:

  • The patent describes a method for setting the black voltage of a display panel by applying a test voltage and measuring the luminance and color area of a test image.
  • The system includes a display panel, a driving circuit, a measurement device, and a computing device that controls the measurement device and the driving circuit to individually obtain a black voltage of each pixel based on the luminance and the color area.
  • The patent specifically mentions that the computing device measures the luminance when the luminance exceeds a preset reference luminance, and when the luminance is less than or equal to the preset reference luminance, the computing device obtains the black voltage of the pixels based on the changed test voltage.
  • The patent also describes the use of an equation to derive main color information from the color area, which is used to determine the black voltage of each pixel.

Statistics:

  • Patent number: 12444374
  • Filing date: June 27, 2024
  • Publication date: October 14, 2025
  • Number of claims: 18
  • Number of figures: 6
  • Number of pages: 12

Sources:

  • Pyo, Sibeak. Method and system for setting black voltage of display panel. U.S. Patent Number 12444374, filed June 27, 2024, and published online on October 14, 2025. Patent URL (for desktop use only): https://ppubs.uspto.gov/pubwebapp/external.html?q=(12444374)&db=USPAT&type=ids