Wireless Charging Coil on Glass Substrate
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Solution Overview
Problem
Handheld devices with thin designs face challenges in battery capacity due to high power requirements, and users often lack access to charging adapters or USB cables, necessitating an alternative method for charging when these resources are unavailable.
Innovation Solution
Integration of wireless charging devices, utilizing printed coils on glass or glass-ceramic substrates, allows for energy transfer between devices with larger battery capacities and those with smaller batteries through an electromagnetic field, maintaining the thin design of electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless charging devices are integrated with electronic devices, then wireless charging capability is enabled, but device thickness increases
Solution Approach 1:
The patent employs thin glass or glass-ceramic substrates as the base for integrating wireless charging coils into device covers. These substrates are sufficiently thin to minimize thickness increase while providing structural support and protection for the coil assembly, directly resolving the contradiction between enabling wireless charging and maintaining thin device profile.
Solution Approach 2:
The wireless charging coil is integrated within the device cover structure itself, nesting the charging functionality within the existing device architecture. The coil is embedded in the cover rather than adding a separate external component, allowing wireless charging capability to be incorporated without significantly increasing overall device thickness.
2Use of energy by moving object
If battery capacity is increased to meet high power requirements, then power availability improves, but device thickness increases
Solution Approach 1:
The patent introduces wireless charging as an intermediary solution that enables energy transfer between devices without requiring physical contact or wired connections. This allows thin handheld devices to access power from larger battery devices through electromagnetic field coupling, avoiding the need to increase the handheld device's battery capacity while maintaining thin form factor.
3Reliability
If wired charging connections are used, then charging reliability improves, but user convenience decreases when adapters or cables are unavailable
Solution Approach 1:
The patent replaces the mechanical wired charging system with a wireless electromagnetic field-based charging system. By using inductive coupling through glass substrates, the system eliminates the need for physical connectors, adapters, and cables, providing charging convenience through contactless power transfer while maintaining reliability through standardized wireless charging protocols.
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 wireless charging without increasing device thickness, providing a reliable power transfer solution when traditional charging methods are inaccessible, ensuring continuous functionality for handheld devices.
Implementation Method 1
energy can be transferred from the portable device to the handheld device through an electromagnetic field created by the wireless charging device mounted on the portable device
Data Source
AI summary
A method of making a wireless charging device for an electronic device includes printing a decoration layer on a surface of a glass or glass-ceramic substrate using a non-conductive ink. A coil is printed on the decoration layer, and an electromagnetic interference absorber layer is applied over the printed coil.