NFC-Powered E-Ink Phone Case Wireless Power Extraction
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Solution Overview
Problem
Existing mobile phone cases with e-ink screens require a separate power supply, leading to increased thickness and weight, which compromises protection, aesthetics, and convenience.
Innovation Solution
An NFC-based intelligent ink screen mobile phone case that integrates an NFC antenna and ink screen on the back surface of a protective shell, using a connecting component to electrically connect or separate the NFC antenna from the ink screen, allowing power to be drawn from the mobile phone via NFC, eliminating the need for an internal power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a separate power supply is adopted in the ink screen mobile phone case, then the ink screen can display images, but the thickness and weight of the mobile phone case increase
Solution Approach 1:
The patent extracts the power supply function from the mobile phone case by eliminating the internal battery and using NFC wireless power transfer instead. The ink screen draws power wirelessly from the mobile phone through NFC technology, removing the need for a separate power supply component in the case.
Solution Approach 2:
The patent replaces the mechanical battery system with an electromagnetic field-based NFC power transfer system. Instead of using a physical battery to store and provide electrical energy, the system uses wireless electromagnetic induction to transfer power from the mobile phone to the ink screen.
2Use of energy by moving object
If a separate power supply is adopted in the ink screen mobile phone case, then the ink screen can display images, but the thickness of the mobile phone case increases
Solution Approach 1:
The patent removes the power supply component from the mobile phone case structure, eliminating the need for battery housing, charging ports, and associated circuitry. This extraction directly reduces the case thickness while maintaining ink screen functionality.
Solution Approach 2:
The patent substitutes the mechanical battery system with wireless NFC power transfer, which requires no physical power supply components in the case. This substitution eliminates the thickness contribution of battery housing and charging infrastructure.
3Device complexity
If the NFC antenna is integrated with the ink screen, then the structure is simplified, but the compatibility with different mobile phone models is reduced
Solution Approach 1:
The patent segments the NFC antenna from the ink screen, allowing them to be independently positioned and optimized. The NFC antenna is placed in the mobile phone case to maximize proximity to the phone's NFC antenna, while the ink screen can be positioned optimally for display. This segmentation enables better compatibility with different phone models.
Solution Approach 2:
The patent implements a detachable connecting component that allows the NFC antenna module to be dynamically adjusted or repositioned relative to the ink screen. This dynamic configuration capability enables adaptation to different mobile phone models and sizes while maintaining a relatively simple overall structure.
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 reduces the weight and thickness of the protective shell, enhances compatibility with different mobile phone models, and improves the user experience by eliminating the need for an internal power supply and reducing production costs.
Implementation Method 1
The NFC-based intelligent ink screen mobile phone case includes an NFC antenna and an ink screen which are arranged on a back surface of the protective shell... the NFC antenna and the ink screen take power from the mobile phone through the NFC antenna
Data Source
AI summary
An NFC-based intelligent ink screen mobile phone case includes a protective shell, an NFC antenna and an ink screen; an accommodating groove for accommodating a mobile phone is formed in the protective shell; a connecting component is arranged between the ink screen and the NFC antenna and used for electrically connecting the NFC antenna to the ink screen or separating the NFC antenna from the ink screen. The connecting component realizes separation of the NFC antenna from the ink screen on the protective shell, different NFC antennas can be combined with the ink screen through the same connecting component, NFC antennas of different shapes and parameters fit the ink screen through unified connecting components. The design greatly improves compatibility with mobile phones of different models and sizes, reduces change in molds and production processes for different mobile phone designs, and reduces the cost of production and adaptation.