OLED Transition Layer Hybrid Deposition Interface
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The vacuum thermal evaporation process for OLED device production is costly and inefficient, and the solution process introduces defects at the interface between layers prepared by different methods, reducing light emission efficiency and the service life of OLED devices.
Innovation Solution
The OLED device employs a transition functional layer with a first sub-layer and a second sub-layer made of the same material, where the first sub-layer is prepared by a solution process and the second sub-layer by a different process such as vacuum thermal evaporation, organic vapor phase deposition, or laser-induced thermal imaging, minimizing defects at the interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the vacuum thermal evaporation process is used to prepare OLED device layers, then the manufacturing precision and quality of film layers are improved, but the fabrication cost increases and material utilization ratio decreases
Solution Approach 1:
The OLED device layers are segmented into two groups: layers prepared by solution process (low cost) and layers prepared by vacuum thermal evaporation (high quality). This segmentation allows different preparation methods to be applied to different layers based on their specific requirements, reducing overall fabrication cost while maintaining necessary quality standards.
Solution Approach 2:
Different preparation methods are applied to different layers based on their local quality requirements. The solution process is used for layers where high precision is less critical, while vacuum thermal evaporation is used for layers requiring superior quality, optimizing the balance between cost and quality.
2Ease of manufacture
If the solution process is used to prepare OLED device layers, then the fabrication cost is reduced, but defects are generated at the interface between layers prepared by different processes
Solution Approach 1:
The transition functional layer acts as an intermediary between layers prepared by solution process and layers prepared by vacuum thermal evaporation. This intermediate layer is designed to be compatible with both preparation methods, providing a buffer that reduces interface defects and improves interfacial compatibility between the two different preparation processes.
Solution Approach 2:
The transition functional layer's material parameters are optimized to bridge the differences between solution-processed and vacuum-evaporated layers. By adjusting parameters such as material composition, thickness, and preparation conditions, the interface compatibility is improved, reducing defects at the heterogeneous interfaces.
3Ease of manufacture
If multiple film layers are prepared by solution process and then vacuum thermal evaporation is used for subsequent layers, then the fabrication cost is reduced to some extent, but the light emission efficiency decreases due to interface defects
Solution Approach 1:
The transition functional layer serves as a mediator that improves the interface quality between solution-processed and vacuum-evaporated layers. By reducing interface defects such as impurities and pores, the transition layer enhances light emission efficiency while maintaining the cost benefits of hybrid preparation.
Solution Approach 2:
The transition functional layer's parameters are optimized to minimize interface defects and improve light emission efficiency. This includes adjusting material composition, layer thickness, and preparation conditions to achieve the best balance between cost reduction and performance maintenance.
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 approach reduces defects and improves light emission efficiency and the service life of OLED devices by forming a homogeneous interface, thereby enhancing the performance and longevity of OLED display panels.
Implementation Method 1
the first sub-layer is prepared by using a first process, and the second sub-layer is prepared by using a second process different from the first process
Implementation Method 2
the second process is any one of vacuum thermal evaporation process, organic vapor phase deposition process, laser induced thermal imaging process, and radiation-induced sublimation transfer process
Implementation Method 3
the second process is any one of vacuum thermal evaporation process, organic vapor phase deposition process, laser induced thermal imaging process, and radiation-induced sublimation transfer process
Implementation Method 4
the second process is any one of vacuum thermal evaporation process, organic vapor phase deposition process, laser induced thermal imaging process, and radiation-induced sublimation transfer process
Implementation Method 5
the second process is any one of vacuum thermal evaporation process, organic vapor phase deposition process, laser induced thermal imaging process, and radiation-induced sublimation transfer process
Data Source
AI summary
An OLED device and a preparation method thereof, and a display device are provided. The OLED device comprises a substrate and a plurality of functional layers disposed sequentially on the substrate. One functional layer of the plurality of functional layers is a transition functional layer, the transition functional layer comprises a first sub-layer and a second sub-layer provided on the first sub-layer, the first sub-layer and the second sub-layer are made of a same material; and the first sub-layer is prepared by using a first process, and the second sub-layer is prepared by using a second process different from the first process.