Force Detection Device Dual Circuit Layer Segmentation
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Solution Overview
Problem
Existing force detection devices are limited in the number of force detections they can perform per unit time, which hinders their efficiency in monitoring dynamic changes in applied forces.
Innovation Solution
A force detection device with a dual circuit formation layer structure, where the first and second circuit formation layers are stacked orthogonally and include detection electrodes, switching elements, and gate line drive circuits, allowing for simultaneous and alternating detection operations to increase the frequency of force measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single circuit formation layer is used for force detection, then the device structure remains simple, but the number of force detections per unit time is limited
Solution Approach 1:
The force detection device is segmented into multiple independent circuit formation layers (first circuit formation layer with first detection electrodes and second circuit formation layer with second detection electrodes). Each layer can perform force detection independently, allowing parallel detection operations that increase the number of force detections per unit time while maintaining manageable structural complexity through modular design
Solution Approach 2:
The invention transitions from a single-plane detection structure to a multi-layer stacked structure in the vertical dimension. The first and second circuit formation layers are stacked in an orthogonal direction, enabling force detection to occur simultaneously at different vertical levels, thereby increasing detection throughput without significantly increasing lateral device footprint
2Productivity
If multiple circuit formation layers are stacked for simultaneous detection, then detection frequency increases, but current leakage between layers may occur
Solution Approach 1:
A sensor layer is introduced as an intermediary component between the first and second circuit formation layers. This sensor layer acts as an electrical insulator that prevents current leakage between the two detection layers while allowing mechanical force transmission, thus enabling high-frequency parallel detection without compromising electrical isolation and detection reliability
Solution Approach 2:
The electrical isolation function is extracted and dedicated to the sensor layer, separating it from the detection electrode functions. This functional separation ensures that the sensor layer's primary role is to provide electrical insulation between layers while transmitting mechanical forces, preventing current leakage pathways while maintaining detection integrity
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 configuration enables a higher frequency of force detections per unit time, reducing detection time and maintaining reliability by preventing current leakage between layers, thus enhancing the device's ability to monitor force changes effectively.
Implementation Method 1
When force is applied to the force sensor, the sensor layer moves toward and comes into contact with the detection electrodes
Data Source
AI summary
A force detection device includes a force sensor having a detection surface to which force is applied, and a drive controller configured to control drive of the force sensor. The force sensor includes a base, a first circuit formation layer, a sensor layer, and a second circuit formation layer stacked in order in an orthogonal direction orthogonal to the detection surface