Capacitive Touch Panel Control Using Non-Tapered Continuous Waves
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Solution Overview
Problem
Capacitive touch panels are particularly susceptible to electromagnetic interference (EMI) from sources like radio frequency signals and other electronic devices, which negatively impact their performance.
Innovation Solution
A touch control system utilizing a non-tapered continuous wave signal, generated by a non-tapered continuous wave generator, is employed to transmit signals through a capacitive touch panel, reducing EMI effects by minimizing bandwidth and enhancing signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tapered wave signals are used for touch panel control, then signal transmission is achieved, but electromagnetic interference (EMI) susceptibility increases
Solution Approach 1:
The patent changes the signal waveform parameters from conventional tapered wave forms to non-tapered continuous wave forms. This parameter change reduces the signal bandwidth while maintaining transmission effectiveness, thereby reducing susceptibility to electromagnetic interference and improving touch detection reliability in noisy environments.
2Object-affected harmful factors
If non-tapered continuous wave signals are used, then EMI susceptibility is reduced, but signal transmission complexity increases
Solution Approach 1:
The patent extracts and eliminates the tapering portion from conventional wave signals, using only the essential continuous wave component. This simplification removes unnecessary signal modulation while maintaining the core functionality, reducing both EMI susceptibility and signal generation complexity.
Data Source
AI summary
A touch control system includes a touch panel composed of a plurality of transmit lines and a plurality of receive lines; a transmitter that transmits at least one transmit signal to corresponding transmit line; a receiver that receives at least one receive signal from corresponding receive line; and a non-tapered continuous wave generator that generates a non-tapered continuous wave signal as a transmit signal for the transmitter.