LC Input Support Circuit for Stable Touch Detection Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing input support devices for touch panels face challenges in accurately controlling circuit characteristics such as resonant frequency and signal intensity, which are crucial for effective input detection.
Innovation Solution
The input support device incorporates an LC circuit with a first and second electrode, and an adjustment circuit that adjusts the circuit characteristics by switching the coupling state between the LC circuit and a resistor element, allowing for precise control of signal intensity while maintaining a constant resonant frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resonant frequency and signal intensity of the LC circuit are controlled, then the input detection accuracy is improved, but the device complexity increases due to additional adjustment circuits
Solution Approach 1:
The patent applies parameter changes by adjusting the resonant frequency and signal intensity of the LC circuit through an adjustment circuit. This allows the circuit characteristics to be optimized for accurate input detection while maintaining a manageable device complexity through systematic parameter control rather than adding multiple separate components.
2Reliability
If the signal intensity is adjusted according to detection sensitivity, then the reliability of input detection is improved, but the device complexity increases due to the adjustment circuit
Solution Approach 1:
The patent implements feedback by adjusting the signal intensity according to detection sensitivity variations over time. The adjustment circuit monitors the detection sensitivity and dynamically adjusts the LC circuit parameters to compensate for variations, thereby improving reliability while keeping the complexity increase minimal through a single integrated adjustment mechanism.
3Stability of the object's composition
If the resonant frequency is kept constant while adjusting signal intensity, then the detection stability is improved, but the device complexity increases due to the adjustment circuit
Solution Approach 1:
The patent applies parameter changes by selectively adjusting only the signal intensity parameter while keeping the resonant frequency constant. This targeted parameter adjustment maintains detection stability by preserving the resonant characteristics, while the adjustment circuit manages complexity by focusing on a single adjustable parameter rather than controlling multiple independent variables.
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 the input support device to adjust signal intensity according to detection sensitivity, compensating for variations in detection device sensitivity over time and ensuring reliable input detection.
Implementation Method 1
a method in which the input support device is detected using resonance of a resonance circuit provided in the input support device
Implementation Method 2
a magnet is provided in the support body of the input support device... a ferromagnetic member facing the cover member with the detection device interposed
Data Source
AI summary
An input support device arranged above a detection device including a plurality of electrodes, the input support device comprising: an LC circuit; a first electrode coupled to one end side of the LC circuit; a second electrode coupled to another end side of the LC circuit, and an adjustment circuit coupled to the LC circuit and configured to adjust circuit characteristics of the LC circuit.