Magnetic Leveling Additive for OLED Encapsulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing glass cement encapsulation methods for OLED display apparatuses result in the combustion of organics, creating internal holes that compromise the barrier properties and mechanical integrity of the encapsulation, leading to potential water vapor erosion and inadequate sealing.
Innovation Solution
Incorporating a magnetic leveling auxiliary material, such as iron coated with ferric oxide, into the encapsulating material, which moves upon electromagnetic excitation during sintering to level the material and fill internal holes, improving the encapsulation process and sealing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass cement is sintered at high temperature to encapsulate OLED, then the encapsulating material achieves proper bonding and sealing, but organics in the glass cement combust and create internal holes that reduce barrier properties and mechanical strength
Solution Approach 1:
The patent introduces a leveling auxiliary material that performs preliminary leveling action during the sintering process. This material levels the surface of the glass cement before final solidification, preventing the formation of defects and ensuring proper bonding. The preliminary leveling action occurs while the glass cement is still in a workable state, avoiding the need for high-temperature combustion that would create internal holes.
Solution Approach 2:
The leveling auxiliary material acts as an intermediary substance between the glass cement and the external environment. It modifies the sintering process by providing a controlled mechanism for surface leveling without requiring complete combustion of organics. This intermediary material enables the glass cement to achieve proper bonding and sealing while maintaining its mechanical integrity.
2Reliability
If glass cement is sintered to achieve proper encapsulation, then sealing is improved, but internal holes form that allow water vapor erosion and encapsulation failure
Solution Approach 1:
The leveling auxiliary material performs preliminary surface leveling during the sintering process, creating a dense, uniform structure before the glass cement fully solidifies. This preliminary action prevents the formation of internal holes and pores that would otherwise allow water vapor penetration. The surface is leveled while the material is still workable, ensuring proper bonding without creating pathways for moisture ingress.
Solution Approach 2:
The leveling auxiliary material serves as an intermediary that mediates between the sintering process and the final encapsulation quality. It enables the glass cement to achieve proper bonding and sealing while maintaining a dense, hole-free structure that resists water vapor erosion. The intermediary material ensures that the encapsulation maintains both sealing quality and barrier properties.
3Ease of manufacture
If traditional sintering process is used for glass cement encapsulation, then the encapsulating material can be applied, but surface burrs and internal holes remain that reduce laser sealing proportion and mechanical properties
Solution Approach 1:
The leveling auxiliary material performs preliminary surface leveling during the sintering process itself, eliminating the need for post-processing steps. This preliminary action occurs while the glass cement is in a workable state, allowing the material to flow and level naturally. The result is a smooth surface without burrs and a dense internal structure without holes, achieving high manufacturing precision while maintaining ease of manufacture.
Solution Approach 2:
The leveling auxiliary material acts as an intermediary that transforms the sintering process from a defect-generating operation into a defect-eliminating process. It mediates between the heating process and the final surface quality, ensuring that surface burrs are eliminated and internal holes are prevented. This intermediary material enables high manufacturing precision to be achieved without complicating the manufacturing process.
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 use of a magnetic leveling auxiliary material enhances the encapsulation process by filling surface burrs and internal holes, thereby improving the laser sealing proportion and mechanical properties of the display apparatus, ensuring better protection against water and oxygen ingress.
Implementation Method 1
the leveling auxiliary material moves upon excitation so as to level the encapsulating material
Implementation Method 2
the exciting apparatus is used for exciting the movement of the leveling auxiliary material
Implementation Method 3
the heating apparatus is used for heating the encapsulating cover plate
Implementation Method 4
controlling the temperature of the heating apparatus so that the encapsulating material is in a melted state
Data Source
AI summary
Embodiments of this disclosure provide an encapsulating material, an encapsulating cover plate, a sintering equipment, a sintering method, and a display apparatus, and relate to the technical field of display. This encapsulating material comprises a leveling auxiliary material, wherein the leveling auxiliary material is used to move upon excitation so as to level the encapsulating material when the encapsulating material is subjected to sintering, and is thus used in the encapsulation of a cover plate to be encapsulated and an encapsulating cover plate.