Display Apparatus With Multi-Coil NFC Detection Regions
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Solution Overview
Problem
The challenge of establishing timely and effective near field communication connections with a communication target is hindered by the unpredictable positioning of the NFC antenna coil on a mobile phone, leading to a low success rate of target recognition.
Innovation Solution
A display apparatus with a flexible circuit board and multiple antenna coils, each corresponding to a detection region, is designed to enhance communication efficiency by selecting one coil at a time using a shared near field communication circuit, ensuring consistent coil specifications and symmetrical arrangement to improve recognition accuracy and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single NFC antenna coil is arranged on the back of the mobile phone, then the device complexity is reduced, but the recognition area and connection success rate deteriorate due to the user's inability to determine the antenna position
Solution Approach 1:
The single NFC antenna coil is segmented into multiple antenna coils (first antenna coil, second antenna coil, etc.) arranged at different positions on the back of the display apparatus. Each antenna coil corresponds to a specific detection region, allowing the system to cover a larger overall recognition area while maintaining manageable complexity through modular segmentation.
Solution Approach 2:
The patent transitions from a single-point antenna configuration to a multi-point spatial distribution of antenna coils across the back surface. By adding the spatial dimension of multiple positioned coils rather than relying on a single location, the system expands the effective recognition area without proportionally increasing complexity.
2Area of stationary object
If multiple antenna coils are used to expand the detection area, then the recognition area is improved, but the device complexity increases due to requiring multiple NFC circuits
Solution Approach 1:
A single near field communication circuit is designed to perform multiple functions by sequentially controlling different antenna coils. The circuit can select and activate any of the multiple antenna coils as needed, making one circuit serve the role of multiple dedicated circuits would otherwise be required, thereby reducing overall device complexity while maintaining expanded detection coverage.
Solution Approach 2:
The near field communication circuit implements dynamic selection among multiple antenna coils based on operational needs. Rather than having static, dedicated circuits for each antenna, the system dynamically switches between coils, allowing one circuit to adaptively serve multiple antenna elements and reducing the total circuit count.
3Device complexity
If the NFC antenna coil position is fixed on the back of the mobile phone, then the device complexity is reduced, but the connection speed deteriorates due to frequent positional adjustments needed by the user
Solution Approach 1:
The back surface is segmented into multiple detection regions, each associated with a specific antenna coil position. By distributing antenna coils across different segments of the back surface rather than using a single centralized antenna, the system enables faster connection establishment as users can naturally approach from various positions without needing to precisely align with a single fixed point.
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 design allows for fast and accurate recognition of communication targets without constant positional adjustments, increasing the recognition area and reducing costs by sharing a near field communication circuit among multiple coils.
Implementation Method 1
a second flexible circuit board, including a base material layer and a plurality of antenna coils arranged on a side of the base material layer
Data Source
AI summary
The present disclosure discloses a display apparatus and a control method thereof. The display apparatus includes: a display panel, a first flexible circuit board and a main control panel. The main control panel is electrically connected with the display panel through the first flexible circuit board, and the first flexible circuit board is arranged on a back surface of the display panel. The display apparatus further includes: a second flexible circuit board, including a base material layer and a plurality of antenna coils arranged on a side of the base material layer, and each antenna coil corresponds to a detection region; and a near field communication circuit, located on a circuit board different from the second flexible circuit board, wherein the near field communication circuit selects one of the plurality of antenna coils for use at the same moment.