Glass Substrate Cleansing With Magnetic Impurity Removal
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Solution Overview
Problem
Conventional glass substrate cleansing devices are ineffective in removing large magnetic impurities, leading to incomplete cleansing and defects such as bright spots or bright lines on liquid crystal display panels.
Innovation Solution
A method and device that incorporates a magnetic attraction device within an air drawing device, combined with ultrasonic wave generators to detach and remove impurities, including magnetic impurities, from the glass substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If air blowing devices are used to detach impurities from glass substrate, then light impurities can be removed, but large magnetic impurities cannot be effectively removed
Solution Approach 1:
The patent combines the air blowing device and magnetic attraction device into a single integrated cleansing system. The air blowing device detaches impurities from the glass substrate surface, while the magnetic attraction device simultaneously attracts and collects magnetic impurities through magnetic force. This merging of mechanical detachment and magnetic attraction functions resolves the contradiction by enabling both light and large magnetic impurities to be effectively removed.
Solution Approach 2:
The suction device acts as an intermediary component that collects both air-blowed and magnetically attracted impurities. It receives detached impurities from the air blowing device and magnetic impurities from the magnetic attraction device, channeling them into a collection container. This intermediary mechanism ensures comprehensive impurity removal while maintaining system organization and efficiency.
2Device complexity
If conventional air drawing device is used alone, then the structure remains simple, but magnetic impurities cannot be effectively attracted
Solution Approach 1:
The patent merges the air drawing device with a magnetic attraction device to create an enhanced suction system. The magnetic attraction device generates magnetic fields that actively attract magnetic impurities toward the suction opening, while the air drawing device provides airflow to carry detached impurities into the collection system. This combination maintains relative structural simplicity while dramatically improving magnetic impurity removal capability.
Solution Approach 2:
The suction device is designed with multi-functionality, serving both as an air drawing mechanism and a magnetic attraction mechanism. By integrating these two functions into a single device component, the system achieves comprehensive impurity collection without proportionally increasing device complexity, as the unified structure performs multiple cleansing functions simultaneously.
3Ease of operation
If only air blowing is used, then the device operation is simple, but large magnetic impurities remain on substrate
Solution Approach 1:
The operation system merges automated air blowing control with automated magnetic attraction control into a unified operational sequence. Both functions are activated simultaneously or in coordinated sequence through a single control system, maintaining ease of operation while achieving complete cleansing. The operator simply needs to initiate the cleansing cycle, and the integrated system automatically coordinates air blowing and magnetic attraction to remove all types of impurities.
Solution Approach 2:
The system incorporates self-service characteristics through automated control mechanisms that manage both air blowing and magnetic attraction functions. The control system automatically regulates airflow intensity, magnetic field strength, and timing sequences without requiring manual intervention for each parameter adjustment. This automation maintains operational simplicity while ensuring complete and consistent cleansing results.
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
Effectively removes magnetic impurities from glass substrates, improving the quality of liquid crystal display panels by preventing defects like bright spots and bright lines.
Implementation Method 1
each provided with an ultrasonic wave generator 302 for emitting an ultrasonic wave to a surface of a glass substrate 700 so as to cause the impurities that are attached to the surface to vibrate and thus detach from the glass substrate 700
Implementation Method 2
the magnetic attraction device generating a magnetic attraction force to the magnetic impurities on the glass substrate to be cleansed so as to draw the impurities attached to the glass substrate to be cleansed into the suction device
Data Source
AI summary
The present invention provides a method for cleansing a glass substrate and a device for performing the method. The method includes: (1) providing a transport platform (20) and a glass substrate to be cleansed (40); (2) placing a glass substrate to be cleansed (40) on the transport platform (20); (3) providing two air blowing devices (60); (4) the two air blowing devices (60) blowing air flows toward the lass substrate to be cleansed (40) to have impurities (42) that are attached to the glass substrate to be cleansed (40) detached from the glass substrate (40); (5) providing a suction device (80), the suction device (80) comprising an air drawing device (82) and a magnetic attraction device (84); (6) the air drawing device (82) drawing air from the glass substrate to be cleansed (40) and the magnetic attraction device (84) generating a magnetic attraction force to magnetic impurities on the glass substrate to be cleansed (40) so as to draw the impurities (42) attached to the glass substrate to be cleansed (40) into the suction device (80).