Foldable Device Strain-Sensitive Sensor Deformation Detection
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Solution Overview
Problem
Current gesture-sensitive panels on foldable display devices lack the ability to effectively detect and respond to deformation, which is essential for providing accurate input and position feedback in flexible and bendable devices.
Innovation Solution
A foldable device with a folding area containing a layer of strain-sensitive material and conductor lines that change conductivity upon deformation, allowing for precise detection of position changes and triggering actions based on these changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a gesture-sensitive panel is attached onto a flexible image display device to enable foldable characteristics, then the device gains flexibility and bendability, but the panel lacks the ability to effectively detect and respond to deformation
Solution Approach 1:
The patent combines the gesture-sensitive panel with the flexible display device by integrating the conductor lines and strain-sensitive material layer directly into the display structure. This merging ensures that the sensing capability is inherent to the foldable device itself, enabling simultaneous achievement of flexibility and deformation detection accuracy.
Solution Approach 2:
The patent utilizes changes in electrical conductivity parameters of the strain-sensitive material layer in response to mechanical deformation. By monitoring conductivity variations caused by folding-induced strain, the system accurately detects deformation while maintaining the foldable characteristics of the display device.
2Measurement precision
If a layer of strain-sensitive material with particles is used to detect deformation, then conductivity changes upon deformation enabling position detection, but the device complexity increases due to multiple layers and contacting points
Solution Approach 1:
The patent extracts the deformation detection function from a separate sensor system and integrates it directly into the display structure through conductor lines and strain-sensitive material layers. This extraction approach simplifies the overall system by eliminating the need for additional separate sensors while maintaining position detection accuracy.
Solution Approach 2:
The patent employs thin film structures for the strain-sensitive material layer and conductor lines that conform to the flexible display substrate. These thin film implementations reduce structural complexity compared to bulk sensor materials while preserving the ability to detect deformation-induced conductivity changes accurately.
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
Enables accurate position detection and feedback in foldable devices, enhancing user interaction and device functionality by translating deformation into actionable inputs.
Implementation Method 1
a layer of strain sensitive material having particles, wherein conductivity of the strain sensitive material is configured to change when the layer experiences the deformation
Data Source
AI summary
In an embodiment, a foldable device having a sensor is described. In an embodiment, the device comprises: A folding area, wherein the folding area is configured to rotate according to an axis of rotation caused by folding the device, causing deformation of the folding area. The folding area comprises: a layer of strain sensitive material having particles, wherein conductivity of the strain sensitive material is configured to change when the layer experiences the deformation. The folding area comprises a layer of conductor lines configured to detect the change of the conductivity of the strain sensitive material, wherein the layer of the conductor lines includes a plurality of contacting points with the strain sensitive material.