Watch Bezel Antenna and Touch Circuit for Limited Space
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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 integration of a bezel made of dielectric and/or electrically non-conductive material, housing an antenna circuit and touch control circuit, which includes a curved electrode and parallel strands for the antenna, optimizing signal transmission and reception without impacting aesthetics or costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna circuit is integrated into the bezel of the watch, then the signal transmission and reception efficiency is improved, but the available space for antenna length is reduced
Solution Approach 1:
The antenna circuit is nested within the bezel structure of the watch, utilizing the existing spatial envelope. The conductive traces are arranged in a compact pattern that fits within the bezel's internal volume, allowing the antenna to be housed without increasing the overall watch dimensions while maintaining adequate effective length for signal transmission.
Solution Approach 2:
The antenna circuit transitions from a traditional linear or planar layout to a three-dimensional arrangement within the bezel. The conductive traces are positioned at different depths and angles within the bezel structure, effectively utilizing vertical and radial dimensions to maximize the antenna's electromagnetic radiation pattern while fitting within limited horizontal space.
2Reliability
If the bezel is made of dielectric and/or electrically non-conductive material to house the antenna circuit, then the antenna performance is improved, but the manufacturing complexity and material selection are increased
Solution Approach 1:
The invention changes the material parameter of the bezel from conventional metal to dielectric and/or electrically non-conductive materials. This parameter change enables the antenna circuit to function properly by eliminating electromagnetic interference, while the patent addresses the manufacturing challenge by specifying materials that can be produced using existing watchmaking techniques such as ceramic injection molding or polymer composite fabrication.
3Ease of operation
If the touch control circuit and antenna circuit are integrated in the bezel, then the interactivity of the watch is improved, but the energy consumption and manufacturing costs are increased
Solution Approach 1:
The touch control circuit and antenna circuit are merged into a single integrated system within the bezel structure. The conductive elements serve dual functions as both antenna traces and touch sensing electrodes, eliminating the need for separate circuitry and reducing overall power consumption. The shared infrastructure of conductive traces and control logic reduces the energy burden compared to having independent systems.
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 energy consumption, while maintaining cost-effectiveness.
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 bezel is made of at least one dielectric and/or electrically non-conductive material
Data Source
Figure 1~2B
Figure 3~4
AI summary
The invention relates to an electronic watch comprising a case having a case body and a bezel forming in whole or in part a touch interface, said case comprising an electronic device having an electronic circuit having a substrate of which a peripheral area of its upper surface forms with said bezel mounted on the case body an enclosure in which are included an antenna circuit of a communication module and a touch control circuit of a touch control member of the electronic device, said touch control circuit comprising at least one curved element of conductive material forming an electrode of which one end is connected to a connection terminal of said touch control member which is included on the peripheral area of the upper surface of the substrate (5).