Display Panel Image Sticking Detection via Spectral Energy Ratio
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Solution Overview
Problem
Conventional methods for judging image sticking in display panels are subjective and lack objective evaluation, relying on human eye judgment which introduces variability and inaccuracies.
Innovation Solution
A detection system and method that involves obtaining a display panel image, identifying the image display portion, performing Fourier transform to obtain spectral energy values, and determining a ratio of these values to assess image sticking, thereby providing an objective evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If human eye judgment is used to evaluate image sticking, then the detection process is simple and quick, but the judgment accuracy is low and subjective factors are introduced
Solution Approach 1:
The patent replaces the mechanical human visual inspection system with an automated image processing system that captures display panel images and analyzes them through digital signal processing. The system substitutes human subjective judgment with objective computational analysis, thereby eliminating subjectivity while maintaining operational simplicity through automated workflows.
Solution Approach 2:
The patent introduces an intermediary image processing system that acts as a mediator between the display panel and the evaluation process. This intermediary system captures images and performs spectral analysis, serving as a bridge that translates physical image sticking phenomena into quantifiable spectral energy ratios, thereby improving measurement precision without requiring direct human observation.
2Reliability
If automated image processing with Fourier transform is used, then objective evaluation is achieved, but the processing complexity increases
Solution Approach 1:
The patent transforms the image data from spatial domain to frequency domain using Fourier transform, changing the parameter representation from pixel intensities to spectral energy values. This parameter transformation enables the extraction of characteristic frequencies that correspond to image sticking patterns, thereby improving detection reliability through objective spectral analysis while managing processing complexity through standardized signal processing techniques.
3Measurement precision
If spectral energy ratio analysis is performed, then objective and accurate measurement is achieved, but the detection time increases
Solution Approach 1:
The patent performs preliminary actions by pre-establishing the Fourier transform process and spectral energy calculation methodology before actual detection. The system is pre-configured with the transformation algorithms and analysis frameworks, so that during actual detection, only image capture and spectral ratio calculation are needed, thereby reducing real-time detection time while maintaining high measurement precision through预先 prepared analysis protocols.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method offers an accurate and objective assessment of image sticking severity, reducing subjective influences and improving judgment reliability compared to conventional methods.
Implementation Method 1
performing Fourier transform to the image display portion, obtaining a first spectral energy value with characteristic frequency in the frequency domain structure corresponding to the image sticking
Data Source
AI summary
The present application discloses a detection system for image sticking of display panel and method thereof, includes obtaining the display panel image to be detecting the image sticking; obtaining the image display portion of the display panel in the display panel image; performing Fourier transform to the image display portion, obtaining a first spectral energy value with characteristic frequency corresponding to the image sticking in the image display portion, and a second spectral energy value of the reference frequency in the image display portion; determining the ratio of the first spectral energy value and the second spectral energy value is exceeding the numerical range of the corresponded qualified detection, if beyond, it is judged as disqualified. By the method described above, the present application can solve the conventional image sticking judgment based on human subjectivity, accurate judgment and objectively evaluation of severity the image sticking of the display panel.