Flexible Display Wireless Charging Magnetic Distortion Control
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Solution Overview
Problem
Electronic devices with displays extending to side faces experience distortion during wireless charging, leading to flickering and artifacts on the front face, resulting in a poor user experience.
Innovation Solution
The electronic device controls the display to deactivate at least part of the display or the wireless charging circuit when active, preventing distortion by managing the magnetic fields generated during wireless charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless charging is performed with display active, then power transmission efficiency is improved, but display quality deteriorates due to magnetic field distortion
Solution Approach 1:
The display is divided into multiple regions (first display region and second display region) corresponding to different coil areas. The controller selectively activates or deactivates specific display regions based on which coil is performing wireless charging, thereby preventing magnetic field distortion in the active display area while maintaining power transmission efficiency.
Solution Approach 2:
The system dynamically adjusts the display activation state based on the wireless charging status. When a coil is activated for charging, the controller dynamically deactivates the corresponding display region; when charging is complete, the display region is reactivated. This dynamic adaptation resolves the contradiction between maintaining power transmission and preventing display distortion.
2Ease of operation
If display is activated during wireless charging, then user interaction is improved, but display stability deteriorates due to flickering and artifacts
Solution Approach 1:
The display is segmented into multiple controllable regions. The controller identifies which display region corresponds to the active coil and selectively deactivates only that specific region while keeping other regions active. This segmentation approach maintains user interaction capability in non-interference areas while ensuring display stability in the affected area.
Solution Approach 2:
The controller acts as an intermediary between the wireless charging circuit and the display. It receives charging status information, determines the affected display region, and adjusts the display activation state accordingly. This intermediary control mechanism prevents direct conflict between power transmission and display stability.
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 prevents display distortion and artifacts, ensuring a flicker-free and clear image during wireless charging by actively managing the display state and magnetic field interactions.
Implementation Method 1
The wireless charging technology uses wireless power transmission and reception
Implementation Method 2
distortion of the display extending to the at least one side face may occur... by a magnetic field generated by wireless charging
Data Source
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AI summary
According to certain embodiments, an electronic device comprises a housing including a first plate, a second plate spaced apart from the first plate and facing away from the first plate, and a side member at least partially surrounding a space between the first plate and the second plate; a touchscreen display including a first portion exposed through or mounted on at least part of the first plate, and a second portion extending from the first portion and bendable into the space such that the second portion is positioned or positionable between the first portion and the second plate; a conductive coil disposed in a space between the first portion and the second plate or in a space between the first portion and the second portion in parallel to the second plate; a wireless charging circuit electrically connected to the conductive coil; a first shielding layer interposed between the conductive coil and at least part of the first portion of the touchscreen display; and a second shielding layer interposed between the second plate and at least part of the second portion of the touchscreen display.