Oxygen-Sensitive Detecting Element for Display Package Sealing Integrity
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Solution Overview
Problem
Existing packaging detection methods for displays, especially OLEDs, face inefficiencies and inaccuracies in sealing inspection, failing to detect small damages and requiring costly equipment, with high hysteresis and reliance on indirect methods.
Innovation Solution
A package structure incorporating an oxygen-sensitive material with changed light emission characteristics, such as phosphorescent or fluorescent dual emissive materials, is used to detect oxygen leaks by irradiating with electromagnetic radiation, allowing for direct and efficient detection of sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If indirect detection methods are used for sealing inspection, then detection can be performed without direct contact, but detection precision and reliability deteriorate due to high hysteresis and inability to detect small damages
Solution Approach 1:
The patent introduces an oxygen-sensitive material as an intermediary element within the sealed space. This material directly interacts with oxygen that may leak through sealing defects, converting the invisible sealing quality issue into a visible optical signal change. The intermediary material bridges the gap between non-contact detection requirements and precise defect identification.
Solution Approach 2:
The oxygen-sensitive material exhibits color or light emission characteristic changes when exposed to oxygen. This optical property transformation allows for high-precision detection of sealing integrity, as even minor oxygen leaks cause detectable changes in the material's luminescence properties, enabling accurate identification of small damages.
2Reliability
If complex detection circuits and costly equipment are used, then detection capability improves, but device complexity and cost increase
Solution Approach 1:
The oxygen-sensitive material performs the detection function autonomously through its intrinsic optical properties. When oxygen penetrates the seal, the material automatically changes its light emission characteristics without requiring external detection circuits or complex processing systems. This self-service mechanism dramatically simplifies the detection system while maintaining high reliability.
Solution Approach 2:
The patent replaces complex mechanical or electronic detection circuits with a passive optical material that responds directly to oxygen presence. The detection function is achieved through the material's natural photoluminescence properties rather than active electronic systems, reducing device complexity and cost while improving reliability.
3Productivity
If conventional packaging detection methods are used, then existing technology can be maintained, but detection sensitivity deteriorates due to inability to detect small damages
Solution Approach 1:
The patent changes the detection parameter from indirect physical measurements to direct optical property changes of the oxygen-sensitive material. This parameter transformation enables detection at the molecular level of oxygen presence, dramatically improving sensitivity to small damages while maintaining compatibility with existing packaging processes through simple material integration.
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 provides a simple, cost-effective, and highly sensitive method for detecting oxygen leaks, enhancing the sealing effect and extending the service life of displays by accurately identifying damage without the need for complex detection circuits.
Implementation Method 1
The oxygen sensitive material includes a phosphorescent material
Implementation Method 2
The oxygen sensitive material includes a fluorescent phosphorescent dual emissive material
Data Source
AI summary
The present disclosure relates to a package structure, a display panel, a display device, and a method for detecting a package structure. The package structure includes a first package layer and a second package layer disposed opposite to each other, and a sealing element between the first package layer and the second package layer for forming a sealed space between the first package layer and the second package layer. The package structure further includes a detecting element located in the sealed space, the detecting element including an oxygen sensitive material, the oxygen sensitive material including a material whose light emission characteristics are changed after exposure to oxygen.