Coil-Shaped Electrode Integrating Capacitive and Electromagnetic Touch Detection
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Solution Overview
Problem
Conventional technologies face challenges in making electromagnetism touch structures compatible with capacitance touch structures, particularly in distinguishing between hand touches and electromagnetic pen inputs on touch screens.
Innovation Solution
The integration of coil-shaped electrodes in the capacitance touch structure, which function as virtual electrodes for capacitive touch detection and sensing coils for electromagnetic touch detection, allows for compatibility without adding extra structure or processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional electromagnetism and capacitance integrated touch screens are implemented, then both electromagnetism touch function and capacitance touch function are integrated, but the structure becomes complex and difficult to manufacture
Solution Approach 1:
The coil-shaped electrode serves dual purposes: it acts as a virtual electrode for capacitance touch detection and simultaneously functions as the coil electrode for electromagnetism touch detection. This multi-functional design eliminates the need for separate electrode structures for each touch mode, thereby integrating both touch functions while maintaining structural simplicity and reducing manufacturing complexity
Solution Approach 2:
The patent merges the virtual electrode of the capacitance touch structure with the coil electrode of the electromagnetism touch structure into a single integrated component. By combining these two previously separate elements into one coil-shaped electrode, the design achieves functional integration without increasing structural complexity or requiring additional manufacturing processes
2Adaptability or versatility
If separate electromagnetism and capacitance touch structures are used, then both touch functions are available, but the manufacturing process becomes complicated
Solution Approach 1:
The coil-shaped electrode is designed to perform multiple functions within a single manufacturing process. It serves as both the virtual electrode for capacitance detection and the coil electrode for electromagnetism detection, eliminating the need for separate manufacturing processes for two distinct electrode structures and thereby simplifying production
Solution Approach 2:
By merging the virtual electrode and coil electrode into a single integrated coil-shaped electrode structure, the patent enables both electromagnetism and capacitance touch functions to be manufactured through a unified process, avoiding the complexity of implementing two separate manufacturing processes
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 solution enables seamless compatibility between electromagnetism and capacitance touch structures, improving touch sensitivity and visual aesthetics while maintaining the functionality of both touch detection methods.
Implementation Method 1
the coil-shaped electrodes are configured to detect an electromagnetic touch during an electromagnetic touch detection
Implementation Method 2
multiple capacitive touch electrodes and multiple coil-shaped electrodes; where the coil-shaped electrode functions as a virtual electrode for a capacitive touch detection
Data Source
AI summary
An electromagnetism and capacitance integrated touch screen, a touch display panel and a touch display apparatus are provided. Multiple virtual electrodes (generally located between a drive electrode and a detection electrode) in a capacitance touch structure are arranged to be coil-shaped, and the coil-shaped virtual electrode functions as a coil of an electromagnetism touch structure. In this way, the electromagnetism touch structure can be implemented without adding extra structure and process to the capacitance touch structure, thereby achieving compatibility between the electromagnetism touch structure and the capacitance touch structure.