Display compensation method and device of display panel

By obtaining the grayscale value and average brightness load of each pixel in the OLED display panel, and using a compensation lookup table for brightness and color compensation, the problem of brightness and color uniformity in OLED display panels under high resolution and high refresh rate is solved, achieving efficient brightness uniformity and color fidelity.

CN121963642APending Publication Date: 2026-05-01ANALOGIX (SHANGHAI) SEMICONDUCTOR CO LTD +1
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Patent Information

Application Number
CN202610092886.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-22
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Under high resolution and high refresh rate, load changes in OLED display panels can lead to uneven brightness and color, as well as color shift. Existing compensation technologies have limited dynamic range, insufficient color accuracy, and low computational efficiency.

Method used

By acquiring the grayscale value of each pixel in the current frame of the display panel, calculating the average brightness load, using a compensation lookup table for brightness and color compensation, and combining a high-precision colorimeter and display control unit for fully automatic data acquisition, a brightness-grayscale mapping relationship is constructed to correct the IR-Drop effect in real time.

Benefits of technology

At high resolution and high refresh rate, it achieves significant improvements in brightness uniformity and color fidelity, maintaining good display performance, especially under dynamic display content and different load conditions.

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Abstract

The invention discloses a display compensation method and device of a display panel. The method comprises the steps of obtaining a gray value of each pixel in a current display frame of a display panel; determining an average brightness load of a current display picture in the display panel according to the gray value; searching in a compensation lookup table by taking the gray value and the average brightness load as indexes to obtain a second lookup combination with the highest matching degree with the first lookup combination corresponding to the gray value and the average brightness load, the compensation lookup table being used for recording compensation values under different brightness loads and different gray combinations; determining a compensation value corresponding to the second search combination as a target compensation value of the first search combination; and performing brightness and chromaticity compensation on the pixel according to the target compensation value. According to the OLED display panel, the technical problems that the influence of load change of the OLED display panel on the brightness and the chromaticity is more and more obvious in the related technology, and particularly under different gray scales and load conditions, the influence causes non-uniform display and color shift are solved.
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