Display Panel Flicker Debugging via Time-Domain Brightness Segmentation
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Solution Overview
Problem
The accuracy of flicker degree testing for display panels is low, which hinders the effective alleviation of the flicker phenomenon.
Innovation Solution
A method and device for flicker debugging in display panels, involving the acquisition and processing of display brightness data to determine a flicker degree parameter based on change rates within specific time periods aligned with human visual persistence, thereby improving accuracy and debugging effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional flicker testing methods are used, then the testing process is simple, but the accuracy of flicker degree measurement is low
Solution Approach 1:
The patent segments the brightness data into multiple time periods corresponding to human visual persistence time. By dividing the measurement into segments aligned with human visual characteristics, the system achieves more accurate flicker detection without requiring overly complex equipment, thus improving measurement precision while keeping the system relatively simple.
Solution Approach 2:
The patent changes the parameter of time period duration to match human visual persistence time. This parameter adjustment allows the measurement system to align with human visual characteristics, improving flicker degree measurement accuracy by making the measurement cycle correspond to when humans can actually perceive brightness changes.
2Measurement precision
If flicker degree parameter is determined without considering human visual characteristics, then the measurement process is fast, but the accuracy reflects human observation is low
Solution Approach 1:
The patent employs periodic action by using time periods that repeat according to human visual persistence characteristics. This periodic measurement approach ensures that each measurement cycle aligns with when human eyes can detect brightness changes, thereby improving the accuracy of reflecting human observation while maintaining efficient measurement timing.
Solution Approach 2:
The patent adjusts the time period parameter to match human visual persistence time. This parameter change ensures that measurements are taken at intervals that correspond to human visual capabilities, improving the relevance of measurement results to human observation without significantly increasing total measurement time.
3Ease of manufacture
If display brightness data is processed without time-domain continuity, then data processing is simpler, but the difficulty of accurate flicker analysis increases
Solution Approach 1:
The patent segments the brightness data into continuous time-domain segments aligned with visual persistence time. This segmentation creates a continuous time-domain signal that is easier to process analytically while maintaining the temporal relationships necessary for accurate flicker detection, thus reducing processing difficulty.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining time-domain continuity in the processed data. By keeping the data continuous in the time domain throughout the processing steps, the system simplifies the analysis process while accurately capturing flicker phenomena that depend on temporal continuity.
Data Source
AI summary
A flicker debugging method and device for a display panel. The flicker debugging method for a display panel includes acquiring multiple display brightness data of the display panel in a preset time period; processing the multiple display brightness data to obtain a time-domain signal of the multiple display brightness data that is continuous in a time domain; determining the flicker degree parameter of the display panel according to the change rates of the display brightness data in multiple first time periods in the time-domain signal of the multiple display brightness data, where the duration of each first time period is determined according to the visual persistence time of a human eye, and the duration of the preset time period is greater than the duration of each first time period; and determining whether to debug the display panel according to the flicker degree parameter.