Flexible Multi-Layer Sensing Surface Calibration
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Solution Overview
Problem
Existing touch-sensitive surfaces are typically rigid, making large-scale surfaces cumbersome to store and transport, susceptible to damage, and inefficient for applications requiring flexible interaction areas.
Innovation Solution
A flexible multi-layer sensing surface that can be rolled up for storage and easily unrolled for use, featuring a calibration module to adjust operating parameters based on the relative position of its layers, enabling precise touch detection and object identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rigid touch-sensitive surface is used, then touch detection precision is maintained, but storage and transport efficiency deteriorates and susceptibility to damage increases
Solution Approach 1:
The patent applies the dynamics principle by transitioning from a rigid, fixed structure to a flexible, adaptable structure. The sensing surface is made flexible allowing it to be rolled up for storage and unrolled for use, enabling the system to dynamically change its physical state between operational and storage modes. This resolves the contradiction by allowing high precision touch detection when deployed while improving storage efficiency when rolled up.
Solution Approach 2:
The patent directly applies this principle by using flexible sensing layers, flexible spacer layers, and flexible conductor layers instead of rigid structures. The flexible capacitor structure with thin film dielectric layers maintains touch detection precision while enabling the surface to be rolled up for efficient storage and transport, directly resolving the technical contradiction between precision and storage efficiency.
2Stability of the object's composition
If a rigid touch-sensitive surface is used, then structural stability is maintained, but ease of storage and transport deteriorates
Solution Approach 1:
The system dynamically adapts its physical state between a stable, flat configuration during operation and a compact, rolled configuration for storage. The flexible multi-layer structure maintains structural integrity in both states, resolving the contradiction between structural stability and ease of storage.
Solution Approach 2:
The flexible sensing surface can be rolled up into a compact cylindrical form that nests within a housing, allowing easy storage and transport. The multi-layer flexible structure maintains its integrity during rolling and unrolling, preserving structural stability while dramatically improving ease of storage and transport.
3Ease of operation
If the sensing surface is made flexible, then ease of storage and transport improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent introduces flexible spacer layers as intermediary elements between the flexible sensing layers and flexible conductor layers. These spacer layers maintain consistent spacing and facilitate alignment during manufacturing, reducing the precision requirements for assembling the flexible multi-layer structure while enabling easy storage and transport.
Solution Approach 2:
The patent modifies physical parameters such as the thickness and material properties of the flexible spacer layers to optimize both manufacturability and performance. By carefully controlling these parameters, the system achieves adequate layer alignment precision without requiring excessively tight manufacturing tolerances, while maintaining the flexibility needed for easy storage and transport.
4Measurement precision
If calibration is performed after rolling, then touch detection accuracy is maintained, but additional operation time is required
Solution Approach 1:
The patent performs calibration actions after the sensing surface is unrolled and before normal operation begins. This preliminary calibration step establishes the correct spatial relationships between layers, ensuring accurate touch detection from the start of use. While this adds a brief calibration step, it maintains high touch detection accuracy without requiring continuous recalibration during operation.
Solution Approach 2:
The calibration process uses feedback from the flexible sensing layers to detect and correct positional offsets between layers. By measuring the actual positions of conductors and sensors after unrolling, the system automatically adjusts calibration parameters to compensate for any deviations, maintaining touch detection accuracy while minimizing the time required for calibration.
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 flexible surface allows for efficient storage and transport while maintaining precise touch detection and object identification capabilities, enhancing usability and durability in collaborative and interactive applications.
Implementation Method 1
Each pixel element comprises a flexible capacitor... the flexible sensing layer... detect changes in capacitance
Data Source
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AI summary
A flexible multi-layer sensing surface comprises a first flexible layer and a second flexible layer. The first flexible layer is a sensing layer and the second flexible layer is another sensing layer or an output layer. The sensing surface also comprises a calibration module which is configured to use the first flexible sensing layer to detect the relative position of the first and second flexible layers and this detected relative position is then used to update one or more stored operating parameters.