OLED Display Device With Thin Film Battery Integration
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Solution Overview
Problem
Conventional display devices with rechargeable batteries face challenges in reducing thickness while maintaining sufficient capacity, and those with solar batteries suffer from inadequate indoor charging and increased thickness.
Innovation Solution
An OLED display device integrated with an all-solid-state thin film battery, where the battery is positioned below the OLED device, allowing for non-transparent materials to be used, reducing thickness and enhancing battery performance and endurance without reliance on lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional rechargeable battery is used in a display device, then the battery capacity is sufficient, but the thickness of the display device cannot be reduced significantly
Solution Approach 1:
The patent applies thin film technology to create a battery with thickness of several micrometers to hundreds of micrometers, replacing conventional thick batteries. The thin film structure enables the battery to meet the thickness requirements of modern display devices while maintaining functional capacity through optimized active material composition and electrode architecture.
Solution Approach 2:
The patent changes the physical and chemical parameters of the battery by using novel electrode materials, electrolyte compositions, and structural configurations specific to thin film batteries. These parameter changes enable the battery to achieve both reduced thickness and sufficient capacity by optimizing the relationship between film thickness, material density, and electrochemical performance.
2Length of stationary object
If a solar battery is used in a display device, then the thickness can be reduced, but the charging capability is insufficient under indoor lighting conditions
Solution Approach 1:
The thin film battery serves as a self-contained energy storage device that does not require external light conditions for charging. It can be charged from any electrical source and provides reliable power output independent of environmental lighting conditions, eliminating the dependency on solar or ambient light intensity.
3Length of stationary object
If a solar battery is used in a display device, then the thickness can be reduced, but another rechargeable battery must be added simultaneously, increasing the overall thickness
Solution Approach 1:
The thin film battery serves as a universal power source that can be charged from any electrical source (wall outlet, USB, wireless charging) and functions as both energy storage and power supply. This multi-functional capability eliminates the need for separate solar batteries and rechargeable batteries, simplifying the overall system structure while maintaining reduced thickness.
4Illumination intensity
If transparent materials are used for thin film battery layers, then the light blocking effect is reduced, but the photoelectric conversion efficiency is relatively low
Solution Approach 1:
The patent employs advanced thin film fabrication techniques to create highly optimized electrode structures with controlled thickness, porosity, and material composition. These thin film structures achieve superior photoelectric conversion efficiency through enhanced light absorption paths, improved charge carrier collection, and optimized active material loading, surpassing the limitations of conventional transparent battery materials.
Data Source
AI summary
Embodiments of the present disclosure relate to an OLED display device with a thin film battery, which includes: a first substrate, a second substrate arranged to be opposite to the first substrate and an OLED device formed between the first and second substrates. The display device further includes at least one thin film battery formed on the first substrate.