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Samsung patents method to calibrate LED displays for consistent color

Patent drawing
Patent drawing from the official filing.

Samsung has filed a patent for a way to adjust the brightness of individual light-emitting diode (LED) pixels in a display. The method uses two different sets of correction values, or coefficients, to ensure that colors look accurate at both bright and dim settings.

Why it mattersThis improves the consistency of screen colors, which is important for high-end monitors and televisions where subtle brightness changes can be noticeable.

In the filing’s own words

A calibration method of a plurality of light-emitting diode (LED) pixels of a display apparatus, includes: obtaining a first correction coefficient that corresponds to each of a plurality of LED pixels and corresponds to a high grayscale that is greater than or equal to a threshold grayscale; and obtaining a second correction coefficient that corresponds to each of the plurality of LED pixels and corresponds to a low grayscale that is less than the threshold grayscale, wherein the obtaining the second correction coefficient includes: obtaining the second correction coefficient based on the first correction coefficient and a third correction coefficient corresponding to a low grayscale measured for each red, green, and blue color for each pixel group including a plurality of LED pixels, or obtaining the second correction coefficient based on the first correction coefficient and a white luminance value corresponding to a low grayscale measured for each pixel group.

What exactly they claim (claim 1)

1. A display apparatus comprising: a display comprising a plurality of light-emitting diode (LED) pixels; memory storing a first correction coefficient that corresponds to each of the plurality of LED pixels and corresponds to a high grayscale that is greater than or equal to a threshold grayscale, and a second correction coefficient that corresponds to a low grayscale that is less than the threshold grayscale; and one or more processors configured to drive the display by applying a correction coefficient for each grayscale obtained based on the first correction coefficient and the second correction coefficient to each of the plurality of LED pixels, wherein the second correction coefficient is obtained based on the first correction coefficient and a third correction coefficient corresponding to a low grayscale measured for each red, green, and blue color for each pixel group comprising a plurality of LED pixels, or obtained based on the first correction coefficient and a white luminance value corresponding to a low grayscale measured for each pixel group.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
DISPLAY DEVICE, ELECTRONIC DEVICE, AND CALIBRATION METHOD THEREOF
Publication number
US20260331017A1
Application number
19468478
Filed
Feb 3, 2026
Published
Oct 22, 2026
Inventors
2
Claims
19

Classified under

G09G 3/2007 Physics & computingG09G 3/32 Physics & computingG09G 2300/0452 Physics & computingG09G 2320/0233 Physics & computingG09G 2320/0242 Physics & computingG09G 2320/0693 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.