Conductive Multi-Touch Overlay for Accurate Small-Screen Input
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Solution Overview
Problem
Conventional multi-touch displays with small screens can be difficult for users to accurately touch multiple points simultaneously, leading to cumbersome and inefficient interactions.
Innovation Solution
A driving device with a conductive pattern portion, including a finger touch portion, conductive connecting portions, and touching portions, is designed to work in conjunction with a capacitive multi-touch display, allowing for precise and simple multi-touch interactions by amplifying capacitance changes at specific points on the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small-scale multi-touch display is used, then the device size is reduced, but it becomes troublesome and difficult for users to correctly touch multiple touching points with multiple fingers
Solution Approach 1:
A driving device with conductive pattern portions is introduced as an intermediary between the user's fingers and the multi-touch display. The driving device includes a base with multiple conductive pattern portions that can be touched by fingers, which then activate corresponding touching portions on the display through capacitive coupling, enabling accurate multi-touch operation on small screens
Solution Approach 2:
The driving device creates a physical copy or representation of the touching interface outside the display area. The conductive pattern portions on the base replicate the functionality of the display's touching areas, allowing users to interact with multiple points accurately through the driving device before the touch is transferred to the display
2Adaptability or versatility
If multiple touching points are designated beforehand on a small multi-touch display, then specific functions can be executed, but it becomes difficult for users to accurately touch all points simultaneously
Solution Approach 1:
The driving device serves as a mediator that provides larger, more easily distinguishable conductive pattern portions for finger contact. These pattern portions are electrically connected to the display's touching areas, allowing users to accurately activate multiple functions without needing to precisely touch small areas on the display itself
Solution Approach 2:
The driving device divides the interaction into separate components: the base with conductive pattern portions for finger contact, the conductive connecting portions for signal transmission, and the touching portions on the display for function activation. This segmentation allows each component to be optimized for its specific function, improving overall accuracy
3Measurement precision
If a driving device with conductive pattern portion is provided, then accurate multi-touch operation is enabled, but the device structure becomes more complex
Solution Approach 1:
The driving device combines multiple functional elements into a single integrated unit: the base structure, conductive pattern portions for touch input, conductive connecting portions for signal transmission, and the relationship with the display's touching portions. This merging reduces overall system complexity compared to having separate components for each function
Solution Approach 2:
The driving device is designed as a universal interface that can work with various multi-touch displays. The conductive pattern portions and connecting portions are configured to generally activate touching portions on the display, making the driving device adaptable to different display configurations without requiring complex customization
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
Enables accurate and efficient multi-touch operations on capacitive multi-touch displays by ensuring that the correct buttons or areas are activated without requiring the user to directly touch the accumulating portion, thereby improving user experience and interaction efficiency.
Implementation Method 1
The conductive connecting portion is provided on the base so as to be kept from activating a touching area of the multi-touch display by a capacitive coupling between the touching area of the multi-touch display and itself
Data Source
AI summary
A driving device includes a base and a conductive pattern portion provided on a surface of the base. The conductive pattern portion has a finger touch portion, touching portions and conductive connecting portions connecting the finger touch portion and each of the touching portions. When a surface of the base is contacted with a multi-touch display of an information processor, each of the touching portions activates a corresponding touching area of the multi-touch display. Thus, a predetermined action is executed by the information processor.