OLED Packaging Layer Layout Using Magnetic Moisture-Absorbing Nanoparticles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing OLED display technologies face performance and lifespan issues due to water and oxygen intrusion, exacerbated by water-absorbing materials that can damage the OLED when reacting with moisture or under external pressure, requiring complex double-layer coating processes.
Innovation Solution
A display panel with a packaging layer containing water-absorbing magnetic nanoparticles that are distributed perpendicular to the OLED component or along the packaging layer's periphery, allowing for single-layer coating and reduced damage by applying a magnetic field to position the nanoparticles away from the OLED, thus achieving both packaging and waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-absorbing material is added to packaging material to enhance packaging effect, then water absorption capability is improved, but OLED component may be damaged by heat release or gas release during water reaction
Solution Approach 1:
The packaging layer is segmented into multiple layers with different functions: a first packaging layer containing water-absorbing particles positioned away from the OLED, and a second packaging layer adjacent to the OLED that protects it from heat and gas. This segmentation allows each layer to perform its specific function without causing harm to the OLED.
Solution Approach 2:
The first packaging layer acts as an intermediary between the external environment and the OLED, absorbing water before it can reach the OLED. The second packaging layer serves as a protective intermediary that blocks heat and gas from reaching the OLED while still allowing the water-absorbing function to operate.
2Reliability
If water-absorbing particles are evenly distributed in packaged material, then packaging effect is improved, but particles may crush OLED under external pressure when packaging material is cured
Solution Approach 1:
The packaging structure is divided into two distinct layers: the first layer contains the water-absorbing particles and is positioned away from the OLED, while the second layer is positioned adjacent to the OLED and does not contain particles. This segmentation prevents particles from directly contacting and potentially crushing the OLED under pressure.
Solution Approach 2:
The solution moves the water-absorbing particles from a two-dimensional even distribution across the packaging layer to a three-dimensional arrangement where they are concentrated in a specific layer (first packaging layer) positioned at a distance from the OLED, creating a vertical dimension of protection.
3Object-affected harmful factors
If double-layer coating is performed to position water-absorbing material away from OLED, then damage to OLED is reduced, but process complexity increases
Solution Approach 1:
The packaging material is segmented into two functional layers with different compositions and positions. The first layer contains water-absorbing particles and is applied first, followed by the second layer adjacent to the OLED. This segmentation enables the system to achieve both protection and water absorption while maintaining a relatively simple sequential coating 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
This solution simplifies the coating process, reduces damage to the OLED, and effectively prevents water and oxygen intrusion, enhancing the display panel's performance and lifespan while maintaining dual functions of packaging and waterproofing.
Implementation Method 1
applying a magnetic field to induce the water-absorbing magnetic nanoparticles to move along a direction perpendicular to the cover plate to a side far away from the OLED component
Data Source
AI summary
Embodiments of the present disclosure disclose a display panel and a fabricating method thereof. In the solution, on one hand, water-absorbing magnetic nanoparticles in a packaging layer are distributed along a direction perpendicular to the cover plate at a side far away from an OLED component, or distributed along an extension direction of the packaging layer at a periphery of a region in which the OLED component is located, thus reducing the damage to the OLED component of a display substrate. On the other hand, since the water-absorbing magnetic nanoparticles have magnetic property, the water-absorbing magnetic nanoparticles can be doped in the packaging layer material in a packaging and waterproofing process, and a magnetic field is applied to induce the magnetic nanoparticles to move to the side far away from the OLED component or to the periphery of the region in which the OLED component is located.