Foldable Display Biometric Sensors

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Solution Overview

Problem

Conventional foldable electronic devices typically integrate only one biometric sensor, limiting access restriction approaches and the security of information with varying security levels stored within the device.

Innovation Solution

A foldable display device with two biometric sensors, one in each display region, allowing for enhanced access restriction methods by utilizing multiple biological features for authentication, such as fingerprints, iris recognition, or face features, and enabling different security levels based on matched biological data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If only one biometric sensor is integrated in the electronic device, then the device complexity is reduced and manufacturing is easier, but the access restriction approaches are limited and security protection is insufficient

Engineering Contradiction:
Improvesecurity protectionVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the single biometric sensing function into multiple separate biometric sensors (first biometric sensor and second biometric sensor) positioned at different locations on the display. This segmentation allows each sensor to independently perform authentication, enabling multiple access restriction approaches while maintaining manageable device complexity through modular sensor integration

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If multiple biometric sensors are integrated in the electronic device, then multiple access restriction approaches are achieved and security is enhanced, but the device complexity increases

Engineering Contradiction:
Improveaccess restriction approachesVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements multi-functionality by integrating multiple biometric sensors that can perform different authentication functions (fingerprint recognition, iris recognition, face features). Each sensor serves as an independent authentication channel, allowing the device to adapt to different security requirements and provide versatile access restriction approaches for information with varying security levels

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of manufacture

If one biometric sensor is used, then the manufacturing process is simpler, but the protection of information with different security levels is limited

Engineering Contradiction:
Improveease of manufactureVSAvoidprotection of information with different security levels
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic security by allowing the system to selectively activate different biometric sensors based on the security level of the information being accessed. The controller can dynamically choose which sensor to use for authentication, providing adaptable protection for information with varying security levels while maintaining a standardized manufacturing process for integrating multiple sensor types

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3654136B1Foldable display device with biometric sensors and method for driving the same
Publication Date: 2025.01.08 INNOLUX CORP
  • EP3654136B1 patent drawingFigure 1
  • EP3654136B1 patent drawingFigure 2
  • EP3654136B1 patent drawingFigure 3

AI summary

A foldable display device (100, 200, 300, 400, 500, 600) is disclosed and has a first display region (DR1), a second display region (DR2), and a foldable region (FR) connecting the first display region (DR1) and the second display region (DR2). The foldable display device (100, 200, 300, 400, 500, 600) includes a first biometric sensor (106, 206, 306, 406, 506a, 506b, 606) disposed in the first display region (DR1) and a second biometric sensor (108, 208, 308, 408, 508a, 508b, 608) disposed in the second display region (DR2).