Watch Bezel Touch Circuit With Segmented Antenna Integration
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Solution Overview
Problem
Existing electronic watches face challenges in integrating an antenna circuit with optimal length for full signal transmission/reception within limited space, while maintaining aesthetics, energy consumption, and manufacturing costs.
Innovation Solution
The bezel of the watch is designed with first and second parts, using dielectric and/or electrically non-conductive materials, incorporating a touch-sensitive zone and an antenna circuit, with the touch control circuit and antenna circuit produced on separate surfaces of the bezel, ensuring optimal signal transmission/reception and minimal impact on aesthetics and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna circuit is integrated into the watch case with limited space, then the compactness is improved, but the optimal antenna length for full signal transmission/reception cannot be achieved
Solution Approach 1:
The patent utilizes the lateral surface area of the cylindrical watch case to accommodate the antenna circuit, transforming the traditional planar layout into a three-dimensional wraparound configuration. This allows the antenna to achieve optimal length by following the curved surface of the case, effectively using the lateral dimension to resolve the space-length contradiction.
Solution Approach 2:
The antenna circuit is divided into multiple segments that are distributed around the lateral surface of the watch case. This segmentation allows the total antenna length to be maintained while adapting to the limited space by breaking the continuous antenna into discrete portions positioned at optimal intervals around the case circumference.
2Ease of operation
If the touch interface is integrated into the bezel, then the interactivity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent combines the touch interface electrodes with the existing bezel structure, integrating the touch sensing functionality into the bezel's manufacturing process. This merging approach allows the touch interface to be produced as part of the bezel assembly rather than as a separate component, thereby reducing overall manufacturing complexity while maintaining full touch interactivity.
3Reliability
If the antenna circuit is isolated from metal parts, then the signal reception quality is improved, but the available space for antenna integration is reduced
Solution Approach 1:
The patent introduces dielectric material as an intermediary between the antenna circuit and any adjacent metal parts within the watch case. This dielectric layer provides the necessary electromagnetic isolation to ensure optimal signal reception quality while allowing the antenna to be positioned in spaces that would otherwise be unavailable due to proximity to metal components.
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
The solution enables efficient signal transmission/reception with minimal impact on watch aesthetics and manufacturing costs, while providing a functional touch interface and antenna circuit integration.
Implementation Method 1
an antenna of optimal length allows a signal to be sent/received in full and at full power
Implementation Method 2
the external face is provided with at least one touch-sensitive zone
Data Source
Figure 1~3
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Figure 5~6
AI summary
One aspect of the invention relates to an electronic watch (1) comprising a case provided with a bezel (2) forming in whole or in part a touch interface of said watch (1), said bezel (2) comprising an antenna circuit (10) of a communication module (6) of the watch (1) and a flange provided with a touch control circuit (13) of a touch control organ (8) of this watch (1).