Defective Pixel Repair via Automatic Center Coordinate Positioning
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Solution Overview
Problem
Existing methods for repairing bright-spot pixel defects in liquid crystal panels require manual alignment and brightness adjustment, making the process non-automatic and prone to errors.
Innovation Solution
A method and system that automatically position the center coordinate of defective pixels using scanning techniques to precisely align and repair the pixels, incorporating a positioning-center unit and a repairing unit to automate the process, and a monitoring unit to assess the repair effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual alignment and brightness adjustment methods are used, then the repair process can be performed with simple equipment, but the automation level is low and the repair efficiency is reduced
Solution Approach 1:
The patent replaces manual mechanical alignment operations with an automated laser positioning system that uses coordinate information to automatically position the laser at the defective pixel location. The system substitutes human-operated mechanical adjustment with automated control mechanisms, including computer-controlled laser positioning and automatic brightness adjustment, thereby increasing automation while managing equipment complexity through integrated control systems.
2Measurement precision
If manual alignment is used to position the laser precisely to the pixel region, then the equipment can be simpler, but the positioning accuracy is reduced and prone to human error
Solution Approach 1:
The patent uses coordinate information (a digital copy of the pixel location data) to guide the laser positioning system. Instead of relying on manual visual alignment, the system uses pre-acquired coordinate data that precisely represents the defective pixel location, thereby achieving high positioning accuracy through information copying rather than complex real-time measurement systems.
3Productivity
If manual brightness adjustment is performed during laser irradiation, then the equipment can be simpler, but the repair speed is reduced and productivity is lowered
Solution Approach 1:
The patent implements automatic brightness adjustment functionality where the system itself monitors and adjusts the laser brightness parameters without requiring manual intervention. The control system automatically manages the brightness levels during the laser irradiation process, enabling continuous operation and increasing repair speed while the integrated control system manages the added complexity.
4Productivity
If automated positioning and repair systems are implemented, then the repair efficiency and accuracy are improved, but the device complexity increases
Solution Approach 1:
The patent creates a multi-functional integrated system that combines positioning, laser irradiation, brightness adjustment, and repair monitoring capabilities into a single automated platform. This universal system performs multiple repair functions through one coordinated apparatus, increasing overall repair efficiency while consolidating complexity into a unified control architecture rather than separate independent systems.
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 approach enhances the speed, accuracy, and efficiency of pixel repair by eliminating manual errors, ensuring precise alignment and effective light shielding, thereby improving the overall productivity and quality of the repair process.
Implementation Method 1
a worker manually aligns a laser for diffusing the black matrix precisely to a pixel region so as to perform laser irradiation, and the laser irradiates an alignment film so that the alignment film is damaged
Implementation Method 2
the laser irradiates an alignment film so that the alignment film is damaged, in order to reduce light transmittance of liquid crystal
Data Source
AI summary
A method and a system for repairing a defective pixel, and a display panel are provided, the method including: positioning a center of the defective pixel to obtain a center coordinate of the defective pixel; and repairing the defective pixel according to the center coordinate. By the method, the conventional manual alignment operation is replaced with the automatic positioning of the center coordinate, which not only accelerates repairing of the defective pixel, but also improves repairing efficiency, enhances overall efficiency and productivity of the device, and meanwhile, can solve the problem of unsuccessful repairing due to error in manual operation; and the accuracy of the repairing can be improved by automatically positioning the center.