Display Panel Light-Leakage Detection Using Sub-Region Brightness Analysis
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Solution Overview
Problem
The reliability of inspectors to determine the severity level of light-leakage in display panels is low due to subjective judgment during the manufacturing process, leading to inconsistent quality control.
Innovation Solution
A method and system that utilize a light-leakage detection device to assess the light-leakage degree by acquiring brightness values of sub-regions on a display panel, determining the presence of light-leakage sub-regions, and calculating the light-leakage degree based on average brightness values and threshold correlations, with optional adjustments for force applications and deformation sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inspectors determine light-leakage severity based on experience, then the evaluation process is simple and quick, but the reliability and consistency of judgment is low
Solution Approach 1:
The patent replaces the mechanical/subjective inspection method with an optical measurement system. A brightness detector automatically measures the brightness values of sub-regions in the display panel, eliminating human experience-based judgment and providing objective, reliable data for light-leakage assessment.
Solution Approach 2:
The system enables the display panel to self-diagnose its light-leakage conditions through automated measurement. The brightness detector directly measures the panel's actual brightness distribution, allowing the panel to reveal its own defects without requiring external inspector judgment.
2Measurement precision
If manual inspection is used, then the detection process is fast and requires minimal equipment, but the measurement precision and objectivity are insufficient
Solution Approach 1:
The patent divides the display region into multiple sub-regions for targeted measurement. By segmenting the display area and measuring each sub-region's brightness individually, the system achieves precise localization and quantification of light-leakage issues while maintaining efficient processing through automated batch measurement.
3Stability of the object's composition
If experience-based judgment is used, then the inspection process requires no additional equipment, but the consistency and reproducibility of results are poor
Solution Approach 1:
The system establishes a feedback loop where the brightness detector continuously measures actual brightness values, compares them against predetermined thresholds, and provides objective pass/fail judgments. This automated feedback mechanism ensures consistent, reproducible results by eliminating human variability in judgment.
Data Source
AI summary
Provided is a method for determining a light-leakage degree of a display panel, applicable to a light-leakage detecting device, wherein a display region of the display panel comprises a plurality of sub-regions, and the method includes: acquiring a brightness value of each of the sub-regions when a target color is displayed in the display region; and determining, in response to detecting that the plurality of sub-regions comprise at least one light-leakage sub-region, the light-leakage degree of the display panel based on an average of brightness values of the plurality of sub-regions and a brightness value of the light-leakage sub-region.