NFC Antenna Circuit Integration in Touch Display Panels
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Solution Overview
Problem
Current NFC technologies in smart devices require external NFC antennas, increasing manufacturing complexity and cost, and are limited in function integration, hindering miniaturization and product value due to external placement and single-function design.
Innovation Solution
Integrating a near field communication (NFC) antenna circuit within a touch display panel, comprising a coil and connecting lines controlled by a circuit, allowing for both touch and NFC functions within a single device, reducing production costs and enhancing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NFC antenna is placed externally on device shell or battery terminal, then NFC function can be achieved, but device complexity and production cost increase
Solution Approach 1:
The NFC antenna is integrated into the display panel structure by forming the antenna circuit pattern together with the touch sensor electrode patterns in the same non-display region. This merging of NFC antenna and touch display components eliminates the need for external NFC antenna placement, thereby reducing device complexity and assembly difficulty while maintaining NFC functionality.
Solution Approach 2:
The non-display region of the display panel is designed to serve dual purposes: housing both the touch sensor electrodes and the NFC antenna circuit pattern. This multi-functional design allows the same physical space to support both touch sensing and NFC communication functions, reducing the need for additional external components.
2Reliability
If NFC antenna is placed externally, then NFC function can be achieved, but production cost increases
Solution Approach 1:
The NFC antenna circuit pattern is formed simultaneously with the touch sensor electrode patterns using the same manufacturing processes (depositing conductive layers and patterning). This combined formation approach eliminates the need for separate NFC antenna manufacturing and assembly steps, thereby reducing production cost while ensuring NFC function.
Solution Approach 2:
The display panel manufacturing process is designed to produce both touch sensor electrodes and NFC antenna circuit patterns in the same non-display region during the same manufacturing stages. This universal manufacturing approach reduces the number of production steps and associated costs while ensuring both functions are achieved.
3Reliability
If NFC antenna is designed as single-function external component, then NFC communication is enabled, but function integration is limited
Solution Approach 1:
The non-display region is designed to accommodate both touch sensor electrodes and NFC antenna circuit patterns, enabling the display panel to perform multiple functions (touch sensing and NFC communication) through a single integrated structure. This increases function integration and adaptability while maintaining reliable NFC communication capability.
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 integrated NFC antenna circuit enables reduced production costs and enhanced functionality by allowing simultaneous touch and NFC operations within a compact design, addressing the limitations of external NFC antennas and promoting miniaturization in smart devices.
Implementation Method 1
The NFC antenna circuit includes at least one coil
Data Source
AI summary
A touch display panel, a manufacturing method thereof, a driving method thereof and a display device. The touch display panel includes: a display region which is provided with a touch circuit; and a non-display region which is provided with a near field communication (NFC) antenna circuit and a control circuit. The NFC antenna circuit includes at least one coil, a first connecting line connected with one end of the coil, and a second connecting line connected with another end of the coil; and the first connecting line and the second connecting line are connected with the control circuit, and the first connecting line and the second connecting line are connected or disconnected with each other under the control of the control circuit.