Touch Detection Device with Initial Setting Distance for Thick Front Plates
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Solution Overview
Problem
Existing touch panels with thick front plates made of natural materials face challenges in detecting external objects with high sensitivity, leading to potential erroneous detections.
Innovation Solution
A detection device with a sensor region and a detector on the back surface of a nonconductive front plate, utilizing a plurality of electrodes to detect objects based on changes in spatial coordinates, and a gesture determination processor to accurately determine gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the front plate thickness is increased to secure visibility and improve operability, then the structural strength and visibility are improved, but the detection sensitivity deteriorates leading to potential erroneous detections
Solution Approach 1:
The system performs preliminary action by setting multiple initial detection distances before actual operation. The initial setter configures detection distances based on the front plate thickness, storing these parameters in advance. This allows the gesture determination processor to accurately interpret gestures at the appropriate distance threshold, preventing erroneous detections while maintaining the benefits of a thick front plate for visibility and strength.
Solution Approach 2:
The system applies parameter changes by adjusting the detection distance parameter according to the front plate thickness. When the front plate thickness changes, the initial setter modifies the detection distance parameters accordingly, storing multiple sets of parameters for different thickness values. This dynamic parameter adjustment maintains detection precision regardless of the front plate thickness, resolving the contradiction between structural strength and detection accuracy.
2Measurement precision
If the detection sensitivity is increased to detect objects with thick front plates, then the detection capability is improved, but the likelihood of erroneous detections increases
Solution Approach 1:
The system performs preliminary action by pre-configuring multiple detection distance parameters before operation. The initial setter stores these parameters based on the front plate characteristics, enabling the gesture determination processor to reliably distinguish between valid gestures and erroneous detections by comparing against the pre-set distance thresholds appropriate for the specific front plate configuration.
Solution Approach 2:
The system implements feedback by using the stored detection distance parameters to continuously validate detection results. The gesture determination processor references the pre-stored parameters to determine whether a detected object at a given distance represents a valid gesture or an erroneous detection, creating a feedback mechanism that maintains high reliability even with increased detection sensitivity.
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 detection device effectively detects changes in spatial coordinates of objects relative to the front plate, reducing erroneous detections and allowing for accurate gesture recognition even with thicker front plates.
Implementation Method 1
the sensor region has a detection region. The detector is configured to detect an object to be detected on or above a surface of the front plate opposite to the sensor region and overlapping the detection region based on a detection value of each of a plurality of electrodes provided in the detection region
Data Source
AI summary
A detection device includes: a sensor region having a detection region; and a detector disposed on a back surface of a front plate that is a nonconductor. The detector is configured to detect an object to be detected on or above a surface of the front plate opposite to the sensor region and overlapping the detection region based on detection values of electrodes in the detection region. The detector includes: an initial setter configured to set a second distance not smaller than a first distance in a height direction of the front plate and register XY coordinates of an indicator in an XY plane where the object to be detected is detectable; a storage configured to store a parameter generated by the initial setter; and a gesture determination processor configured to determine a gesture corresponding to change in spatial coordinates of the object to be detected based on the parameter.