Mura Compensation for Under-Screen Camera Display Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display panels with under-screen camera technology experience display unevenness due to different lengths of transparent anode leads, leading to bright rings at the edge of the imaging area, especially under low brightness conditions.
Innovation Solution
A mura compensation method that involves acquiring target brightness and voltage values for each pixel unit, performing initial compensation, and then determining secondary compensation values based on actual grayscale and brightness values to adjust pixel units in the function display sub-area, using compensation factors and bases to improve display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent anode leads of different lengths are used to connect pixels to driving circuits, then the imaging area can achieve higher light transmittance, but display uniformity deteriorates due to load differences causing bright rings
Solution Approach 1:
The patent applies local quality by implementing different compensation strategies for different regions of the display panel. The function display sub-area (with under-screen camera) receives secondary compensation adjustments based on its specific characteristics, while the regular display sub-area uses standard compensation. This regional differentiation resolves the contradiction by tailoring the compensation to local requirements.
Solution Approach 2:
The patent changes the compensation parameters (compensation values) based on the actual grayscale and brightness values of pixels in the function display sub-area. By dynamically adjusting these parameters through secondary compensation, the system maintains display uniformity despite the varying lead lengths and load differences in different regions.
2Adaptability or versatility
If lead lengths are extended to reach driving circuits for pixels closer to the center, then more pixels can be connected, but load difference increases causing more severe bright ring effects
Solution Approach 1:
The patent implements feedback by measuring the actual grayscale and brightness values of pixels in the function display sub-area, then using this information to calculate and apply secondary compensation values. This closed-loop approach ensures that display uniformity is maintained despite variations in lead length and load across different pixel positions.
Solution Approach 2:
The patent applies preliminary action by performing compensation adjustments in advance during the display driving process. The secondary compensation values are calculated and applied proactively to prevent bright ring effects before they manifest, rather than attempting to correct them after they occur.
Data Source
AI summary
A mura compensation method of a display panel and a display panel are provided. The display panel includes a display area. The display area includes a regular display sub-area and a function display sub-area. The mura compensation method of the display panel includes: performing an initial compensation for each pixel unit in the display area; acquiring an actual grayscale value and an actual brightness value of each pixel unit in the function display sub-area; and determining a secondary compensation value of each pixel unit in the function display sub-area and performing a secondary compensation.