Brightness Compensation Parameter Determination for Under-screen Camera Displays
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Solution Overview
Problem
The existing brightness compensation methods for display panels with under-screen cameras face issues due to distortion in brightness data acquired by image acquisition devices, leading to suboptimal compensation effects and display uniformity.
Innovation Solution
A method and device that determine brightness compensation parameters by obtaining and correcting brightness values for both display regions, ensuring the ratio of average brightness values is within a standard range, thereby providing accurate compensation and improved display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If brightness compensation is performed using raw brightness data from image acquisition device, then compensation process can be completed, but the compensation effect is suboptimal due to data distortion
Solution Approach 1:
The patent applies preliminary action by performing brightness data correction before the compensation parameter calculation. The system pre-processes the brightness data by comparing acquisition ratios against standard ranges and correcting distorted values in advance, ensuring that subsequent compensation operations use accurate data. This pre-correction step eliminates measurement errors before they affect the final compensation precision.
Solution Approach 2:
The patent implements feedback by continuously monitoring the acquisition ratio of brightness data and comparing it against a standard range. When the ratio falls outside the acceptable range, the system automatically triggers a correction process that adjusts the brightness values. This closed-loop feedback mechanism ensures that measurement precision is maintained throughout the compensation process, directly resolving the contradiction between compensation effectiveness and data accuracy.
2Reliability
If brightness data is acquired from all display regions, then complete compensation can be achieved, but measurement errors and distortions increase
Solution Approach 1:
The patent applies local quality by implementing region-specific brightness correction. Different display regions (such as regions with under-screen cameras versus normal display regions) are evaluated independently, and correction is applied only where distortion is detected. This localized approach maintains measurement precision in problematic areas while preserving the reliability of compensation across the entire display by addressing each region's specific characteristics.
Data Source
AI summary
A method, device, and apparatus for determining a brightness compensation parameter. The method includes: obtaining, at any grayscale, a plurality of first acquired brightness values of a plurality of first sub-pixels of a target color in the first display region and a plurality of second acquired brightness values of a plurality of second sub-pixels of the target color in the second display region of the display panel to be compensated; determining whether an acquisition ratio of an average value of the plurality of first acquired brightness values to an average value of the plurality of second acquired brightness values is within a standard range; correcting the plurality of first acquired brightness values or the plurality of second acquired brightness values to obtain a corrected brightness value of the display panel; determining the brightness compensation parameter of the display panel based on the corrected brightness value.