Antenna Built-in Touch Panel Layer Integration
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Solution Overview
Problem
Existing touch panels with integrated antennas have a greater thickness due to the separation of touch panel and antenna coils in different layers, leading to increased thickness and manufacturing costs.
Innovation Solution
The integration of antennas within the touch panel's electrode layers, where the antenna patterns are formed in the same layer as the drive electrodes, allowing for a thinner design and reduced layer count, enabling cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the touch panel and antenna coils are formed in different layers, then the antenna can be integrated in the display terminal, but the device thickness increases
Solution Approach 1:
The patent merges the antenna coil pattern and touch panel electrode pattern into the same layer structure. The antenna coil is formed using the same transparent conductive material (ITO) and deposition process as the touch panel electrodes, eliminating the need for separate antenna layers and reducing overall device thickness while maintaining both NFC functionality and touch sensitivity
2Adaptability or versatility
If the antenna coil and touch panel are formed in different layers, then wireless communication function is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The antenna coil and touch panel electrodes are combined into a single manufacturing process. Both patterns are formed simultaneously using the same ITO deposition technique, eliminating separate fabrication steps for the antenna layer. This reduces manufacturing complexity, material costs, and production time while achieving both wireless communication and touch panel functions
Solution Approach 2:
The transparent conductive layer serves dual functions: it acts as both the antenna coil for NFC wireless communication and as the touch panel electrode for detecting user input. This multi-functional design eliminates the need for separate dedicated antenna layers and simplifies the overall device 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
This configuration results in a thinner touch panel with reduced manufacturing costs, as the antenna and drive electrodes can be driven simultaneously, improving usability and efficiency.
Implementation Method 1
the communication device includes a power source, and power is supplied to the antenna element for near field wireless communication incorporated in the communication device, whereby a magnetic field is generated by the antenna element
Implementation Method 2
by the magnetic field generated by the communication device when the contactless IC card is brought close to the communication device, induced current is caused to flow through the antenna element of the contactless IC card. Thus, electric power can be supplied from the communication device to the contactless IC card
Data Source
AI summary
Provided is an antenna built-in touch panel that includes an antenna that reads information via near field wireless communication, and that has a small thickness. An antenna built-in touch panel includes: a touch panel; and an antenna that reads information via near field wireless communication, wherein the touch panel includes a first electrode layer and a second electrode layer, and antenna patterns 21a to 21c are provided in at least one of a sensing electrode layer and a drive electrode layer of the touch panel.