Antenna Loop Layout Integrating Capacitance Detection
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Solution Overview
Problem
Conventional input devices that combine capacitance induction and electromagnetic induction technologies face challenges such as increased cost and complexity due to the need for separate substrates for capacitance detection elements and antenna loops, which also result in partial shielding of electromagnetic signals by capacitance induction elements.
Innovation Solution
The integration of capacitance detection elements with antenna loops on the same substrate, using a layout with multiple antenna sections, connecting sections, and switch assemblies to form a single antenna loop that can function for both capacitance and electromagnetic induction, allowing for precise detection without shielding and simplifying the fabrication process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If capacitance induction elements are placed on a separate substrate above the antenna loops, then capacitance induction functionality is achieved, but electromagnetic signals are shielded by the capacitance elements
Solution Approach 1:
The patent combines capacitance induction elements and antenna loops into a single integrated substrate, eliminating the separate layer structure. This merging allows both functions to coexist without the capacitance elements blocking electromagnetic signals, as they are no longer positioned above the antenna loops.
Solution Approach 2:
The patent transitions from a vertical stacking arrangement (capacitance elements above antenna loops on separate substrates) to a planar integration approach where both element types are distributed across the same substrate in different spatial regions, effectively changing the dimensional organization to eliminate shielding.
2Adaptability or versatility
If separate substrates are used for capacitance detection elements and antenna loops, then both functions can be implemented, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the capacitance detection elements and antenna loops onto a single substrate, eliminating the need for separate touch board and antenna loop board assemblies. This reduces structural complexity and simplifies the overall device architecture while maintaining dual-mode input functionality.
Solution Approach 2:
The integrated substrate serves multiple functions simultaneously: it acts as both the support structure for capacitance detection elements and the substrate for antenna loops. This universal substrate design eliminates the need for multiple specialized substrates, reducing manufacturing steps and assembly complexity.
3Ease of manufacture
If capacitance induction elements are integrated with antenna loops on the same substrate, then manufacturing complexity is reduced, but signal interference between the two functions may occur
Solution Approach 1:
The patent divides the substrate into distinct first and second regions, with capacitance induction elements placed in the first region and antenna loops in the second region. This spatial segmentation physically separates the two functional areas, reducing the likelihood of signal interference while maintaining integration benefits.
Solution Approach 2:
The patent applies different functional characteristics to different regions of the same substrate: the first region is optimized for capacitance detection with appropriate electrode patterns, while the second region is optimized for electromagnetic induction with antenna loop configurations. This local optimization ensures each function operates effectively without compromising the other.
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 reduces costs and simplifies the fabrication process while ensuring that capacitance induction elements do not shield electromagnetic signals, enabling effective dual-mode functionality with improved precision and reduced manufacturing complexity.
Implementation Method 1
The conventional inputting device 10 applies the antenna loops 20 deposed on the antenna loops board 16 to electromagnetically induce with a special pen for precise hand writing
Implementation Method 2
The conventional inputting device 10 applies the capacitance induction elements (touch elements) array 18 deposed on the touch board 14 to capacitance induce with user's fingers
Implementation Method 3
the capacitance induction elements (touch elements) array 18 shields the antenna loops 20 deposed on the antenna loops board 16 from receiving the electromagnetic signals emitted or reflected by a pointing device
Data Source
AI summary
The present invention relates to a layout for antenna loops having both functions of capacitance induction and electromagnetic induction, and particularly relates to the layout for antenna loops having both functions of capacitance induction and electromagnetic induction, wherein the capacitance detection elements are integrated with the antenna loops. In this layout for antenna loops, each of the antenna loops therein is separated into three sections, and there are several geometric structures fabricated in two of these sections. These geometric structures are capacitance detection elements. Therefore, the two sections are directly fabricated to be the capacitance detection elements because of these geometric structures. By this way, the antenna loops can be integrated with the capacitance detection elements and the capacitance detection elements do not prevent the antenna loops from receiving the electromagnetic signals.