Flexible Electronic Device with Buffer Layer for Stress Absorption
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Solution Overview
Problem
Portable electronic devices, such as wearable information terminals and secondary batteries, face limitations in size and flexibility due to the need for compact and lightweight designs, which restricts the capacity and arrangement of components, and makes them prone to damage from external forces.
Innovation Solution
The use of a flexible secondary battery with a curved exterior and a buffer layer to absorb stress, combined with a display module and touch input portion between film substrates, allows for a compact and flexible electronic device structure that can bend and fit comfortably on the body, reducing the risk of damage from external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a secondary battery is made lightweight and compact, then portability is improved, but operation time is reduced
Solution Approach 1:
The secondary battery is designed with a curved surface that corresponds to the curvature of the user's body part (e.g., wrist). This curved configuration allows the battery to conform to body contours, improving wearability and comfort while maintaining compact dimensions. The curved design enables efficient space utilization within the wearable device housing, allowing for optimized component arrangement without increasing overall size or weight.
2Adaptability or versatility
If electronic components are arranged freely in a large internal space, then device functionality is improved, but device size increases
Solution Approach 1:
The patent employs a layered structure where electronic components are arranged in multiple levels or tiers within the device housing. The curved surface secondary battery serves as a central element around which other components (display, control unit, etc.) are nested or arranged in concentric or radial patterns. This nesting approach maximizes the utilization of internal space, allowing diverse components to be integrated without increasing the external dimensions of the wearable device.
3Reliability
If a rigid housing is used to protect electronic components, then reliability is improved, but flexibility and comfort are reduced
Solution Approach 1:
The wearable device utilizes a flexible housing structure that can bend and conform to body contours. The curved surface secondary battery is integrated into this flexible housing, allowing the entire device to flex without compromising structural integrity or component protection. This flexible shell design maintains reliability by protecting electronic components from external forces while simultaneously enabling the device to adapt to body movements and maintain comfort during wear.
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 design enables a compact, flexible electronic device with increased visibility and reduced stress on components, improving durability and user comfort by allowing the device to conform to body movements without compromising functionality.
Implementation Method 1
a buffer layer over the secondary battery having the curved portion
Data Source
AI summary
A structure suitable for a portable information terminal or a wearable device is provided. In addition, an electronic device having a novel structure that can have various forms is provided. It is preferable that a buffer layer which absorbs a difference in the amount of change in form be provided between adjacent film substrates which overlap with each other. As the buffer layer, a gelled resin material, a rubber resin material, a liquid material, an air layer, or the like can be used. Furthermore, an optical film such as a polarizing film or a color filter may be used as the buffer layer. A plurality of buffer layers may be provided in an electronic device.