Transparent NFC Antenna on Light Guide for Visual Authentication
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Solution Overview
Problem
Existing light-emitting devices do not effectively allow users to visually recognize light emission based on information obtained through communications, and there is a need for an authentication notification system that integrates a transparent light-emitting component for easy visual recognition.
Innovation Solution
A light-emitting device comprising a light source, a transparent light guide, and an antenna layer on its surface, where the light guide directs light emission to enhance visibility and allows communication-based light emission, integrated with an authentication system for notification purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent antenna layer is provided on the light guide surface for communication, then communication functionality is enabled, but the visual recognition of light emission becomes difficult
Solution Approach 1:
The device is divided into distinct functional layers: a light guide portion for light emission and an antenna layer for communication. This segmentation allows each layer to perform its specific function optimally while coexisting in the same device structure.
Solution Approach 2:
The light guide portion acts as an intermediary between the light source and the external environment. It transmits light from the source while allowing the antenna layer to be positioned on its surface, mediating between the optical and electromagnetic functions.
2Illumination intensity
If the light guide is made transparent to maintain visibility, then visual recognition is improved, but the antenna layer's electromagnetic wave reception may be affected
Solution Approach 1:
The antenna layer is positioned locally on the surface of the light guide portion, allowing different regions of the device to have different properties: the bulk light guide maintains transparency for light transmission, while the surface antenna layer provides electromagnetic wave reception capability.
Solution Approach 2:
The device combines transparent light guide material with an antenna structure on its surface, creating a composite system that exhibits both optical transparency and electromagnetic functionality simultaneously.
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 easy visual recognition of light emission and facilitates authentication notifications by increasing the light-emitting area and maintaining transparency for communication, enhancing user experience and system functionality.
Implementation Method 1
a light guide configured to guide light emitted from the light source
Implementation Method 2
the light source is configured to emit light on the basis of information obtained through communications via the antenna layer
Data Source
AI summary
Provided is a light-emitting device and the like in which a light source emits light on the basis of information obtained through communications and the light thus emitted is easy for a user to visually recognize. A light-emitting device includes an LED, a light guide plate, a transparent NFC antenna sheet, and an NFC antenna. The transparent NFC antenna sheet and the NFC antenna are disposed on a principal surface or a backside surface of the light guide plate. At least some part of the light guided by the light guide plate exits out through the principal surface. The LED emits light on the basis of identification information obtained through communications via the NFC antenna sheet and the NFC antenna.