OLED Substrate Concave Insulating Interlayer Lateral Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional OLED panels face poor sealing effects and reduced service life due to low transverse strength between the glass cement and insulating interlayer, leading to relative movement and instability under lateral pull forces.
Innovation Solution
The introduction of concaves on the surface of the insulating interlayer in the OLED substrate allows for better embedding of glass cement, increasing the lateral tensile-resistance strength between the OLED substrate and package substrate, enhancing stability and sealing efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If glass cement and insulating interlayer are jointed by laser irradiation melting, then the OLED substrate and package substrate are bonded together, but the transverse strength between glass cement and insulating interlayer is relatively small, making it hard to bear larger transverse pull force
Solution Approach 1:
The patent introduces concave structures (curved surfaces) on the insulating interlayer to increase the bonding area and mechanical interlocking between glass cement and insulating interlayer. The concave shapes provide better embedding for the glass cement, thereby enhancing the transverse strength and preventing relative movement under lateral pull forces.
Solution Approach 2:
The patent adds a third dimension to the bonding interface by creating concave structures on the insulating interlayer surface. This dimensional change increases the surface area and creates mechanical interlocking features, transforming a simple planar bond into a multi-dimensional bonded structure with enhanced strength and reliability.
2Stability of the object's composition
If conventional flat insulating interlayer is used, then the structure is simple, but relative movement emerges between OLED substrate and package substrate under large transverse pull force
Solution Approach 1:
The patent introduces concave structures (curved surfaces) on the insulating interlayer to increase the bonding area and mechanical interlocking between glass cement and insulating interlayer. The concave shapes provide better embedding for the glass cement, thereby enhancing the transverse strength and preventing relative movement under lateral pull forces.
Solution Approach 2:
The patent applies concave structures locally at the bonding regions of the insulating interlayer where mechanical strength is most needed, while maintaining the overall simplicity of the device structure. This localized modification provides enhanced stability without significantly increasing overall 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 increased lateral tensile-resistance strength improves the stability and sealing effect of the OLED panel, thereby extending its service life by ensuring a stronger bond between the substrates.
Implementation Method 1
the glass cement 21 is melted by laser irradiation
Implementation Method 2
the glass cement 21 is melted by laser irradiation
Data Source
AI summary
An OLED substrate (1) and a preparation method therefor, an OLED panel, and an OLED display apparatus. An inter-layer insulation layer (12) is formed in an edge area of the OLED substrate (1), and a concave is formed on the surface of the inter-layer insulation layer (12), so that the lateral tensile-resistance strength of the inter-layer insulation layer (12) and a package substrate can be increased, i.e. increasing a lateral tensile-resistance force between the OLED substrate (1) and the package substrate, thereby improving the stability of the OLED panel, ensuring the sealing effect of the OLED panel and improving the service life of the OLED panel.