Magnetic Lamination of Special-Shaped Glass Cover Plates
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Solution Overview
Problem
Conventional lamination methods for special-shaped glass cover plates in display devices face challenges such as film detachment or bubble formation due to inadequate pressure, especially when attaching unique portions of the glass cover plate.
Innovation Solution
A lamination method involving coating a display panel with a magnetic layer and using solenoids to generate magnetic fields with adjustable current magnitude and direction, allowing for precise attachment along the special-shaped glass cover plate without squeezing or bubble formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a roller or tool of a laminating device is used to attach a film to a glass cover plate, then the lamination process can be automated, but if the roller exerts too much pressure, film detachment occurs and if the roller exerts insufficient pressure, bubbles are generated
Solution Approach 1:
The patent replaces the conventional mechanical roller pressing system with a magnetic field-based lamination system. Magnets are arranged on the back surface of the glass cover plate to generate magnetic fields that attract the film during lamination, eliminating the need for mechanical pressure application while achieving bubble-free and detachment-free attachment.
Solution Approach 2:
The patent changes the physical parameter from mechanical pressure to magnetic field strength for controlling the lamination process. By adjusting the strength and distribution of magnetic fields generated by the magnets, the film attachment can be precisely controlled without the harmful effects of excessive or insufficient mechanical pressure.
2Device complexity
If a conventional roller lamination method is used on special-shaped glass cover plates, then the process is simple, but abnormal film attachment occurs at special-shaped portions
Solution Approach 1:
The patent applies local quality by arranging magnets at specific positions on the back surface of the glass cover plate, particularly focusing on special-shaped portions. This localized magnetic field arrangement ensures that film attachment at critical areas is enhanced, achieving uniform attachment across the entire surface including curved and special-shaped regions.
Solution Approach 2:
The patent segments the lamination process by dividing the glass cover plate into regular portions and special-shaped portions, and arranges magnets accordingly. Different magnet arrangements can be applied to different segments to address the specific attachment requirements of each region, ensuring overall attachment quality.
3Manufacturing precision
If magnetic fields are used to attach the display panel, then precise control of attachment is achieved, but the device complexity increases with solenoids and current control
Solution Approach 1:
Instead of using active solenoids that require electrical current control to generate magnetic fields, the patent inverts the approach by using passive permanent magnets that inherently generate magnetic fields. This eliminates the need for complex current control systems while maintaining precise magnetic field application for attachment.
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
The method ensures smooth attachment of the display panel to special-shaped glass cover plates by controlling magnetic forces, preventing detachment and bubble issues, and accommodating complex shapes like curved or folding screens.
Implementation Method 1
arranging a first solenoid and a second solenoid at a regular-shaped portion and a special-shaped portion of the special-shaped glass cover plate, respectively; supplying opposite electric currents to the first solenoid at the regular-shaped portion and the second solenoid at the special-shaped portion
Implementation Method 2
the regular-shaped portion and the magnetic material are of opposite magnetic polarities and attract each other
Implementation Method 3
the special-shaped portion and the magnetic material are of a same magnetic polarity and repulse each other
Data Source
AI summary
The present invention provides a lamination method for a special-shaped glass cover plate, including following steps. Step S1: forming a magnetic layer on a display panel. Step S2: arranging a first solenoid and a second solenoid at a regular-shaped portion and a special-shaped portion of the special-shaped glass cover plate, respectively. Step S3: supplying opposite electric currents to the first solenoid and the second solenoid. Step S4: changing magnitude of an electric current from the regular-shaped portion to the special-shaped portion. Step S5: when to attach the display panel to the special-shaped portion of the special-shaped glass cover plate, changing magnitude of the electric current of the second solenoid and a direction of the second solenoid to attach the display panel along the special-shaped portion.