Dual-Region Display Touch and Fingerprint Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electronic devices lack a compact and user-friendly solution for integrating both touch sensor and fingerprint authentication functions, often requiring multiple components and compromising on display area and convenience.
Innovation Solution
A display device with a dual-region structure, where one region is optimized for high-speed touch sensing and the other for high-resolution fingerprint capture, using a matrix arrangement of light-emitting elements and photodetectors with varying densities and shared organic compounds, integrated into a single housing to reduce component count and enhance user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate components are used for touch sensing and fingerprint authentication, then functional reliability is improved, but device complexity increases and display area proportion decreases
Solution Approach 1:
The patent combines touch sensor and fingerprint authentication functions into a single integrated display device. The display panel includes both touch sensing capabilities and fingerprint sensing capabilities within the same structure, eliminating the need for separate components and reducing overall device complexity while maintaining functional reliability
Solution Approach 2:
The display device is designed to perform multiple functions simultaneously - it serves as both a display panel and a biometric authentication sensor. The same display structure provides touch sensing, fingerprint recognition, and visual output, making the device multifunctional and reducing the total component count
2Reliability
If multiple separate components are used for touch sensing and fingerprint authentication, then functional reliability is improved, but the proportion of display area decreases
Solution Approach 1:
The touch sensor and fingerprint sensor are merged into the display panel structure itself, allowing the display area to serve dual purposes. This integration eliminates separate sensor components that would otherwise reduce the display area proportion, maximizing the visible screen real estate while maintaining authentication functionality
3Measurement precision
If high-density photodetectors are used for fingerprint capture, then measurement precision is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies different photodetector densities to different regions of the display panel. High-density photodetectors are concentrated in the fingerprint capture area where precision is critical, while lower density is used in other display regions. This localized approach achieves high measurement precision where needed without uniformly increasing device complexity across the entire panel
4Reliability
If separate touch sensor and fingerprint sensor components are used, then functional reliability is improved, but ease of operation decreases due to multiple authentication locations
Solution Approach 1:
The display panel serves as a universal interface for both touch interaction and fingerprint authentication. Users can perform both functions at the same location on the screen, eliminating the need to locate and operate separate sensors. This integration significantly improves ease of operation while maintaining the reliability of both functions through the unified sensor array
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 a multifunctional electronic device with reduced components, increased display area, and a seamless fingerprint authentication process that is both efficient and unobtrusive, providing high-speed touch sensing and high-resolution biometric authentication.
Implementation Method 1
The first display region includes a plurality of first light-emitting elements and a plurality of first photodetectors. The first photodetectors have a function of receiving first light emitted from the first light-emitting elements.
Implementation Method 2
The first photodetectors have a function of receiving first light emitted from the first light-emitting elements. The second photodetectors have a function of receiving second light emitted from the second light-emitting elements.
Data Source
AI summary
A display device having both a function of a touch sensor and a function of fingerprint recognition is provided. The display device includes a first display region and a second display region. The first display region and the second display region are provided in contact with each other. The first display region includes a plurality of first light-emitting elements and a plurality of first photodetectors. The second display region includes a plurality of second light-emitting elements and a plurality of second photodetectors. The first photodetector has a function of receiving first light emitted from the first light-emitting element. The second photodetector has a function of receiving second light emitted from the second light-emitting element. The first light-emitting elements and the first photodetectors are arranged in a matrix in the first display region. The second light-emitting elements and the second photodetectors are arranged in a matrix in the second display region. The second photodetectors are arranged in a higher density than the first photodetectors.