Flexible Battery Heat Dissipation Sheet for Foldable Displays
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Solution Overview
Problem
Flexible display devices face challenges in achieving overall flexibility due to heat generation and potential 'hot spots' from energy storage devices, which can damage the panel and pose safety risks.
Innovation Solution
A flexible display device design incorporating a flexible display panel, a flexible battery, and a heat dissipation assembly with a first heat dissipation sheet made of materials like graphene or metal, featuring patterned opening holes and heat dissipation bars to absorb and distribute heat evenly, ensuring uniform temperature and maintaining flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible battery is used to power the flexible display panel, then the device achieves overall flexibility and energy storage, but heat generation and hot spots occur which can damage the panel and create safety risks
Solution Approach 1:
A heat dissipation assembly is introduced as an intermediary component between the flexible battery and the flexible display panel. This assembly includes a heat dissipation sheet with heat dissipation holes and heat dissipation bars that facilitate heat transfer from the battery to the surrounding environment, preventing heat accumulation and hot spot formation while maintaining the flexibility of the overall device structure
Solution Approach 2:
The heat dissipation sheet is designed with a porous structure containing multiple heat dissipation holes. This porous configuration increases the surface area for heat exchange, allowing efficient heat dissipation from the flexible battery while maintaining the flexibility and conformability of the assembly. The porous structure enables the material to bend and flex without compromising its heat dissipation functionality
2Use of energy by moving object
If the energy storage device generates heat during charging and discharging, then power is supplied to the display panel, but local high heat concentration occurs which can damage the panel and cause safety risks
Solution Approach 1:
The heat dissipation assembly acts as a protective intermediary between the energy storage device and the display panel. It actively manages thermal energy by conducting heat away from the battery through the heat dissipation sheet and bars, preventing dangerous heat accumulation that could compromise panel integrity or user safety while allowing continuous power supply operation
Solution Approach 2:
The patent replaces passive thermal management with an active heat dissipation system that uses thermally conductive materials and structured heat transfer pathways. Instead of relying on natural convection or simple insulation, the system employs engineered heat dissipation bars and porous heat dissipation sheets to actively conduct and distribute heat, enhancing reliability during charging and discharging cycles
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 reduces battery temperature, prevents adverse effects on the display panel, and enhances the safety and reliability of the flexible display device by maintaining uniform heat distribution and flexibility.
Implementation Method 1
a first heat dissipation sheet, and the first heat dissipation sheet faces towards or faces away from any side of the flexible display panel... effectively reduces battery temperature, prevents adverse effects on the display panel... maintaining uniform heat distribution
Data Source
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AI summary
The present disclosure provides a flexible display device, including: a flexible display panel; a flexible battery arranged at a side of the flexible display panel away from a light emitting surface; a heat dissipation assembly including a first heat dissipation sheet, the first heat dissipation sheet being arranged at a side of the flexible battery facing or away from the flexible display panel, and the first heat dissipation sheet having a bendable area. Therefore, the flexibility of the entire display device is realized, the local temperature of the battery can also be reduced, and the local temperature of the battery is prevented from being too high, which solves the heat dissipation problem of the flexible battery.