OLED-Photovoltaic Integrated Device for Self-Powering Displays
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Solution Overview
Problem
Existing organic light emitting devices have limited functionality, lacking self-powering and self-illumination capabilities, which restricts their operational efficiency and longevity.
Innovation Solution
Integration of an organic light emitting diode (OLED) module with an organic solar photovoltaic module, utilizing a layered structure with transparent conductive oxide electrodes for light emission and reflective metal electrodes for photovoltaic energy conversion, allowing for self-powering and reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an organic light emitting device uses a single function design, then the device structure is simple, but the operational efficiency and energy self-sufficiency are limited
Solution Approach 1:
The patent combines a light emitting module and a photovoltaic module into a single integrated device. The light emitting module generates light for display, while the photovoltaic module converts light into electrical energy to power the device. This merging of functions allows the device to achieve energy self-sufficiency without significantly increasing structural complexity, as both modules share common components such as electrodes and substrate.
Solution Approach 2:
The integrated device performs multiple functions simultaneously: it displays visual information through the light emitting module while also generating electrical power through the photovoltaic module. This multi-functionality transforms the device from a simple display component into a self-powered system, improving energy self-sufficiency while maintaining reasonable structural complexity through shared architectural elements.
2Use of energy by moving object
If an organic light emitting device integrates both light emitting and photovoltaic modules, then self-powering capability is achieved, but device complexity increases
Solution Approach 1:
The photovoltaic module is positioned on the back surface of the light emitting module, with the light emitting module nested within the overall device structure. The electrodes and functional layers are arranged in a nested configuration where the first electrode serves as the anode for the light emitting module and the third electrode serves as the cathode for the photovoltaic module. This nesting approach minimizes spatial requirements and reduces overall device complexity despite the integrated multi-functional design.
Solution Approach 2:
The patent utilizes the vertical dimension by stacking the light emitting module and photovoltaic module in different layers. The light emitting module is disposed on the first electrode, and the photovoltaic module is disposed on the back surface of the light emitting module. This three-dimensional arrangement allows both functional modules to coexist within a compact structure, managing device complexity through efficient spatial organization rather than increasing planar footprint.
3Ease of manufacture
If traditional manufacturing methods are used for integrated devices, then production costs are high, but manufacturing complexity increases
Solution Approach 1:
The patent employs a sequential manufacturing approach where the light emitting module is fabricated first on the first electrode, followed by the formation of the second electrode on the light emitting module, and finally the photovoltaic module is manufactured on the second electrode. This preliminary action of completing one module before starting the next simplifies the manufacturing process by using the same inkjet printing equipment for both modules, avoiding the need for additional production apparatus and reducing overall manufacturing complexity.
Solution Approach 2:
The same inkjet printing equipment is used to manufacture both the light emitting module and the photovoltaic module. This universal application of the manufacturing equipment across different module types reduces production costs by eliminating the need for specialized equipment for each module type. The manufacturing process is designed to handle both organic light emitting materials and organic photovoltaic materials using identical processing conditions and equipment settings.
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 integrated device achieves self-powering and prolonged operation without external power, reducing energy consumption and production costs through a simplified manufacturing process.
Implementation Method 1
the light emitting layer is disposed between the first electrode and the second electrode
Implementation Method 2
the photovoltaic module includes a light absorption layer, a second electron function layer, and a second hole function layer. The light absorption layer is disposed between the second electrode and the third electrode
Data Source
AI summary
An organic light emitting device and a manufacturing method thereof, and a display device are provided. The organic light emitting device includes a first electrode disposed on an array substrate, a light emitting module disposed on the first electrode, a second electrode disposed on the light emitting module, a photovoltaic module disposed on the second electrode, and a third electrode disposed on the photovoltaic module.