Gluing Device With Magnetic Flow Control For OLED Packaging
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Solution Overview
Problem
Conventional gluing machines for packaging OLED devices often result in discontinuous or thin glue lines due to uneven air pressure or high viscosity of the glue, leading to defective packaging.
Innovation Solution
A gluing device and method that incorporates a magnetic field generation mechanism using an electromagnetic coil to control the flow rate of a glue containing magnetic material, ensuring a consistent and controlled outflow by adjusting the magnetic field intensity based on monitored induction currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air pressure or screw pressure is applied to coat glue on glass plate, then glue can be applied to adhere plates together, but glue flow becomes uneven causing discontinuous or thin glue lines due to insufficient or uneven pressure
Solution Approach 1:
The patent replaces the conventional mechanical pressure application system (air pressure or screw pressure) with a magnetic field-based control system. Magnetic particles embedded in the glue are actuated by electromagnetic coils to control glue flow, eliminating the uneven pressure distribution that causes discontinuous glue lines while maintaining high application efficiency.
Solution Approach 2:
The patent changes the physical state and controllable parameters of the glue by embedding magnetic particles within it. This allows the glue's flow characteristics to be dynamically controlled through magnetic field strength adjustments via electromagnetic coils, enabling precise control over glue line uniformity without sacrificing application speed.
2Strength
If high viscosity glue is used for packaging, then glue can provide sufficient adhesion strength, but glue flow becomes difficult causing discontinuous or thin glue lines
Solution Approach 1:
The patent modifies the rheological parameters of high viscosity glue by incorporating magnetic particles. The magnetic particles respond to electromagnetic fields, enabling the glue to maintain its high adhesion strength while achieving controllable flow characteristics. The magnetic field acts as an additional force mechanism to overcome the high viscosity resistance, ensuring continuous glue lines.
Solution Approach 2:
The patent substitutes mechanical pressure forcing (which struggles with high viscosity) with magnetic field-driven particle movement. The electromagnetic coils generate magnetic forces that directly act on the magnetic particles within the high viscosity glue, propelling the glue forward without relying on high pressure, thus maintaining both adhesion strength and line continuity.
3Manufacturing precision
If magnetic field is applied to control glue flow rate, then uniform glue lines can be achieved, but device complexity increases due to electromagnetic coil and magnetic material
Solution Approach 1:
The patent merges the magnetic particles directly into the glue formulation, combining the adhesive material and the flow control mechanism into a single integrated substance. The electromagnetic coils are positioned to work in conjunction with the glue, creating a unified system where the glue itself carries the control mechanism, reducing overall device complexity despite the added functionality.
Solution Approach 2:
The magnetic particles within the glue serve dual functions: they are part of the adhesive material and simultaneously act as the control elements for flow regulation. The glue essentially controls its own flow by responding to magnetic fields, eliminating the need for separate complex flow control mechanisms and reducing device complexity.
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 solution ensures a uniform glue flow rate, preventing discontinuous or thin glue lines and maintaining the quality of the packaging process by regulating the magnetic field force applied to the magnetic material within the gluing device.
Implementation Method 1
a magnetic field generation mechanism configured to apply a magnetic field within the instillation head, so as to apply a force to the magnetic material through the magnetic field
Implementation Method 2
the magnetic field generation mechanism includes an electromagnetic coil surrounding the instillation head
Implementation Method 3
a monitoring mechanism configured to monitor an induction current in the magnetic field, and calculate a flow rate of the glue in the instillation direction in accordance with a change in the induction current
Data Source
AI summary
The present disclosure provides a gluing device, a gluing method and a colloid for packaging devices. The gluing device includes an instillation head configured to guide a glue added with magnetic material in an instillation direction; and a magnetic field generation mechanism configured to apply a magnetic field within the instillation head, so as to apply a force to the magnetic material through the magnetic field in a direction identical to or opposite to the instillation direction. Thus a flow rate of the glue in the instillation direction is controlled through the force applied by the magnetic material to the glue. The glue in the gluing device may be smoothly dripped out at a constant flow rate, thereby to prevent the occurrence of discontinuous or thin glue lines in the related art due to an insufficient pressure during gluing.