Foldable Display Authentication Using Integrated Optical Input Sensing
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Solution Overview
Problem
Existing electronic devices, such as smartphones and tablets, face challenges in achieving portability, weight reduction, and enhanced functionality, particularly in terms of being foldable, incorporating input functions like touch panels, and providing secure authentication methods.
Innovation Solution
A foldable electronic device with a display apparatus that integrates light-emitting and light-receiving devices, allowing for input operations and fingerprint authentication through touch and image capture, utilizing a hinge mechanism for flexibility and stability, and employing organic EL elements for high aperture ratio and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display apparatus with input function is integrated into a foldable electronic device, then functionality and usability are improved, but device complexity increases
Solution Approach 1:
The patent combines the display apparatus, light-emitting devices, light-receiving devices, and authentication functions into a single integrated foldable electronic device. The display portion serves multiple purposes including display, input reception through light interaction, and fingerprint authentication, thereby improving functionality while managing complexity through unified design.
Solution Approach 2:
The display apparatus is designed to perform multiple functions: visual display, input reception through light emission and detection, and biometric authentication. This multi-functionality approach allows a single component to replace what would traditionally require separate devices, improving versatility while controlling overall system complexity.
2Adaptability or versatility
If light-emitting and light-receiving devices are placed close to each other for input and authentication, then input function and authentication capability are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent places light-emitting devices and light-receiving devices at specific locations within the display portion, close to each other but with defined spatial relationships. This local arrangement optimizes the input and authentication functions while establishing clear manufacturing tolerances for the relative positioning of these components.
3Reliability
If fingerprint authentication is implemented through light-receiving devices, then security is improved, but measurement precision requirements increase
Solution Approach 1:
The patent uses light-receiving devices as intermediaries to capture fingerprint images. These devices detect light reflected from or transmitted through the fingerprint pattern, converting optical information into electrical signals for authentication. This intermediary approach enables secure authentication while managing the precision requirements through optical rather than direct contact measurement.
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 provides a lightweight, foldable electronic device with integrated input and authentication capabilities, enhancing usability and security through contactless input and secure fingerprint verification.
Implementation Method 1
Light-emitting devices utilizing an electroluminescence (hereinafter referred to as EL) phenomenon have features such as thinness, small weight, high-speed response, and capability of low-voltage driving
Implementation Method 2
an image of a fingerprint of the finger used for the first touch operation is captured by a plurality of the light-receiving devices provided close to the plurality of light-emitting devices displaying the keyboard key
Data Source
AI summary
A lightweight, foldable electronic device with an input function is provided. The electronic device is provided with a foldable display apparatus; the display apparatus has an input function, an authentication function, and the like, and is capable of operating the electronic device with or without contact. The display apparatus includes a light-emitting device and a light-receiving device in a display portion. The light-emitting device has a function of performing display. The light-emitting device may also have a light-emitting function for aiding input operation. The light-receiving device has an imaging function and a function of a sensor for performing input operation.