OLED Encapsulation with Organic Nanoparticles
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Solution Overview
Problem
Conventional OLED display panels fail to adequately seal their assemblies, allowing water and oxygen to permeate and reduce the lifespan of the panels.
Innovation Solution
A display panel design featuring a substrate, a display assembly, and an encapsulation component with a layered structure comprising inorganic and organic materials, where the second encapsulation layer includes organic nanoparticles, enhancing the barrier against water and oxygen ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional encapsulation components are used, then the structure is simple, but water and oxygen can permeate through and sealability deteriorates
Solution Approach 1:
The encapsulation component uses a composite structure with an inorganic encapsulation layer (silicon nitride or silicon oxynitride) and an organic encapsulation layer (polymer material), combining the advantages of both materials to achieve superior water and oxygen barrier properties while maintaining structural integrity
Solution Approach 2:
The encapsulation component is divided into multiple distinct layers - a first inorganic encapsulation layer, a second organic encapsulation layer, and a third inorganic encapsulation layer - with each layer providing specific protective functions to collectively enhance sealability
2Reliability
If encapsulation component thickness is increased, then water and oxygen blocking ability improves, but manufacturing complexity increases
Solution Approach 1:
Instead of increasing the thickness of a single encapsulation layer, the invention uses a composite multi-layer structure where thin inorganic and organic layers work synergistically to provide superior barrier properties, achieving high water and oxygen blocking ability without excessive thickness
Solution Approach 2:
Different encapsulation layers are strategically positioned with specific thickness ratios (first inorganic layer thickness to second organic layer thickness ranges from 1/20 to 1/5, and first inorganic layer thickness to third inorganic layer thickness ranges from 1/2 to 2/1) to optimize barrier performance at each interface and throughout the structure
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 effectively prevents water and oxygen from entering the display panels, significantly improving their sealing ability and extending their lifespan.
Implementation Method 1
the first encapsulation layer and the third encapsulation layer are made of an inorganic material... water and oxygen outside of display panels are prevented from entering display panels, increasing water and oxygen blocking ability of display panels
Implementation Method 2
the second encapsulation layer is made of an organic material, and the second encapsulation layer comprises a plurality of organic nanoparticles... water and oxygen outside of display panels are prevented from entering display panels
Data Source
AI summary
The present disclosure provides a display panel and an encapsulation component. The display panel comprises a substrate component, a display assembly, and an encapsulation component. The encapsulation component comprises a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer. The second encapsulation layer is sandwiched between the first encapsulation layer and the third encapsulation layer. The first encapsulation layer and the third encapsulation layer are made of an inorganic material. The second encapsulation layer is made of an organic material, and the second encapsulation layer comprises a plurality of organic nanoparticles in the second encapsulation layer. According to the present disclosure, water and oxygen outside of display panels are prevented from entering display panels.