Laser Irradiation Position Correction for Display Substrate Manufacturing
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Solution Overview
Problem
Existing methods for manufacturing display devices lack precision in predicting and correcting the area to which a laser is irradiated, leading to increased defect rates and processing inefficiencies.
Innovation Solution
A method involving the irradiation of a first laser to a processing area on a display substrate, followed by image capture and displacement calculation to determine a second irradiation area for a second laser, allowing for precise adjustment and correction of the laser's location, thereby reducing defect rates and improving processing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a laser is irradiated to a preset processing area of a display substrate, then processing can be performed, but the irradiated area cannot be predicted with high precision leading to defects
Solution Approach 1:
The patent applies preliminary action by first irradiating a first laser to a first irradiation area and obtaining a first image before performing the main processing. This preliminary step allows measurement of the actual position of the irradiated area and calculation of displacement from the center, enabling correction of position deviation before the second laser processing step, thereby preventing defects caused by inaccurate irradiation positioning
Solution Approach 2:
The patent implements feedback by obtaining images of the irradiation area, calculating the displacement between the actual irradiation center and the preset processing area center, and using this displacement information to determine and adjust the irradiation area for the second laser. This closed-loop feedback mechanism ensures that subsequent processing is performed at the correct position, resolving the precision and reliability contradiction
2Manufacturing precision
If laser irradiation is performed without position correction, then processing speed is maintained, but processing accuracy deteriorates
Solution Approach 1:
The patent applies partial action by performing image acquisition and displacement calculation only for the first irradiation area before the main processing, rather than continuously monitoring throughout the entire process. This selective measurement approach provides sufficient position correction information without adding excessive processing time, thereby maintaining productivity while improving processing accuracy
Solution Approach 2:
The position measurement and correction calculation are performed as preliminary actions before the main second laser processing. By completing the precision correction step beforehand, the actual processing can proceed efficiently without interruption, resolving the contradiction between accuracy and efficiency
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 reduces the defect rate of display substrates by accurately predicting and correcting the laser irradiation area, enhancing processing precision and efficiency.
Implementation Method 1
irradiating a first laser to a first irradiation area of a processing area of a display substrate
Implementation Method 2
obtaining a first image of the processing area of the display substrate
Implementation Method 3
irradiating the second laser to the second irradiation area
Data Source
AI summary
Provided is a method of manufacturing a display device, in which a defective rate of a display substrate is reduced by, prior to main processing, irradiating a laser to a portion of a processing area of a display substrate, and predicting and correcting a location to which the laser is irradiated. The method includes irradiating a first laser to a first irradiation area of a processing area of a display substrate, obtaining a first image of the processing area of the display substrate, calculating a first displacement between a center of the first irradiation area irradiated with the first laser and a center of the processing area by using the first image, determining a second irradiation area to which a second laser is to be irradiated on the display substrate based on the first displacement, and irradiating the second laser to the second irradiation area.