Display Panel Color Shift Alerting via Grayscale Waveform Comparison
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Solution Overview
Problem
Conventional CCD monitoring technologies in liquid crystal display manufacturing face difficulties in real-time adjustments due to poor flexibility and difficulty in detecting abnormalities in RGB color resists, leading to suboptimal production yields and display quality.
Innovation Solution
An alerting method that generates grayscale waveform diagrams for normal and tested display panels, comparing waveform setting and reference values to detect color shifts, with alerts sent when predetermined differences exceed specified values, allowing for real-time adjustments of processing parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional CCD monitoring technology is used to detect RGB color resists, then detection capability is provided, but flexibility and ease of adjustment are poor
Solution Approach 1:
The patent transforms the static CCD monitoring system into a dynamic one by introducing programmable waveform generation and configurable detection parameters. The system can dynamically adjust grayscale waveform settings, detection thresholds, and alert conditions based on different testing requirements, thereby improving flexibility while maintaining ease of operation through software control.
Solution Approach 2:
The invention implements multiple adjustable parameters including grayscale levels, waveform characteristics, detection thresholds, and alert conditions. These parameters can be modified through software to adapt to different display panel types and testing scenarios, resolving the contradiction between flexibility and adjustment difficulty by providing intuitive parameter control interfaces.
2Reliability
If conventional CCD monitoring is used, then basic detection is achieved, but real-time abnormality detection and alerting capability is insufficient
Solution Approach 1:
The patent implements a closed-loop feedback system where the CCD captures display panel images, the processing unit analyzes grayscale waveforms to detect abnormalities, and an alerting mechanism immediately notifies operators. This real-time feedback loop enables rapid detection and response to color resist abnormalities, improving reliability while minimizing response time through automated analysis and immediate alerting.
Solution Approach 2:
The system performs preliminary actions by pre-configuring detection thresholds, grayscale waveform parameters, and alert conditions before actual testing begins. This preparation enables the system to immediately detect and alert on abnormalities without requiring real-time parameter adjustment, thereby improving both detection reliability and response speed.
3Productivity
If conventional monitoring technology is used, then basic monitoring is provided, but production yield improvement is limited
Solution Approach 1:
The patent enables the monitoring system to perform self-service functions by automatically capturing images, analyzing grayscale waveforms, detecting abnormalities, and generating alerts without continuous manual intervention. This automation improves production yield monitoring capability while maintaining ease of operation through simple start/stop controls and automatic parameter management.
Solution Approach 2:
The invention replaces manual visual inspection and manual adjustment mechanisms with automated electronic monitoring and software-based control. The CCD-based optical detection system substitutes for human eyes, while programmable waveform generation and automated analysis replace manual measurement and adjustment, thereby improving productivity while simplifying operation through software interfaces.
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
This method effectively improves the detection of pixel color shifts, enhancing display panel quality and production yields by enabling timely adjustments and alerting technicians to abnormalities.
Implementation Method 1
A charge coupled device (CCD) is a photoelectric conversion device with advantages such as small size, high sensitivity, low noise, fast reading speed, a high dynamic range and full spectrum response.
Data Source
AI summary
The present invention provides an alerting method for monitoring a color shift of a display panel. The alerting method includes: generating a grayscale waveform diagram for an entire frame according to a normal pixel pattern of the display panel, the grayscale waveform diagram having waveform setting values; generating a grayscale waveform diagram for an entire frame according to a pixel pattern of a display panel to be tested, the grayscale waveform having waveform reference values; and obtaining a predetermined difference value between each of the waveform reference values and each of the waveform setting values, and sending out an alerting message when the predetermined difference value exceeds a specified value.