Flexible Circuit Board Loop Layout for Larger Wireless Charging Area
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Solution Overview
Problem
Existing display devices face challenges in implementing a large wireless charging area without increasing the size, weight, and cost of the device.
Innovation Solution
A flexible circuit board is disposed on the rear surface of a display panel to form a loop shape surrounding more than half of the active area, providing a large wireless charging area while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large wireless charging area is implemented, then the wireless charging area increases, but the size, weight, and cost of the device increase
Solution Approach 1:
The patent uses a flexible circuit board with loop-shaped conductive lines that can be disposed on the rear surface of the display panel. This flexible structure allows the wireless charging coil to achieve a large effective area without adding significant weight to the device, as the flexible substrate is much lighter than traditional rigid coil structures.
Solution Approach 2:
The patent transitions the wireless charging coil from a planar arrangement to a three-dimensional loop shape that surrounds more than half of the active area. By utilizing the vertical space on the rear surface and forming a loop configuration, the effective wireless charging area is expanded without proportionally increasing the device footprint or weight.
2Area of stationary object
If a large wireless charging area is implemented, then the wireless charging area increases, but the size, weight, and cost of the device increase
Solution Approach 1:
The flexible circuit board used in this patent has a very thin profile compared to traditional rigid coil structures. By disposing this flexible substrate on the rear surface of the display panel, the patent achieves a large wireless charging area without significantly increasing the overall device thickness.
Solution Approach 2:
The loop-shaped configuration allows the conductive lines to utilize the vertical dimension and wrap around the active area, effectively increasing the wireless charging area without requiring additional horizontal space that would increase device thickness.
3Area of stationary object
If a large wireless charging area is implemented, then the wireless charging area increases, but unnecessary cost increases
Solution Approach 1:
The flexible circuit board serves multiple functions: it provides the wireless charging coil structure, acts as a connection medium between the display panel and main circuit board, and enables the loop-shaped configuration. This multi-functionality eliminates the need for separate components, reducing manufacturing cost while achieving a large wireless charging area.
Solution Approach 2:
The patent merges the wireless charging coil structure with the flexible circuit board that connects the display panel to the main circuit board. By combining these functions into a single integrated structure, the patent reduces the number of components and assembly steps, thereby reducing manufacturing cost while providing a large wireless charging area.
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 a significant increase in wireless charging area while reducing unnecessary costs, weight, and thickness of the display device, enhancing its efficiency and usability.
Implementation Method 1
the display device may provide a wireless charging function for charging an external electronic device
Data Source
AI summary
A display device is provided. The display device comprises a display panel comprising an active area for displaying images on a front surface and a non-active area around the active area, and a flexible circuit board comprising at least one conductive line extending from one end to an opposite end, wherein the flexible circuit board is disposed on a rear surface of the display panel to have a loop shape surrounding more than half of at least a part of the active area.