Multi-Point Under-Display Fingerprint Recognition via Screen Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fingerprint recognition technologies in mobile terminals are limited to single-point recognition, failing to support multi-point or full-screen fingerprint recognition, which limits user experience and security.
Innovation Solution
A method and device for under-display multi-point fingerprint recognition, where a touch screen with a fingerprint recognition area capable of being pressed by multiple fingers uses a fingerprint sensor to acquire images and match them with preset templates, allowing for simultaneous recognition of multiple fingerprints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-point fingerprint recognition is used, then device complexity is reduced, but productivity and user experience are limited
Solution Approach 1:
The fingerprint recognition area is divided into multiple independent recognition units or zones, allowing simultaneous acquisition of multiple fingerprint images across different regions of the touch screen. This segmentation enables parallel processing of multiple fingerprints, significantly improving recognition productivity without requiring a completely new system architecture.
Solution Approach 2:
The patent transitions from single-point (zero-dimensional) fingerprint recognition to multi-point or full-screen (two-dimensional) fingerprint recognition by utilizing the spatial dimension of the touch screen. This dimensional expansion allows multiple fingers to be placed at different positions simultaneously, enabling faster authentication while maintaining manageable system complexity through existing sensor technologies.
2Reliability
If multi-point fingerprint recognition is implemented, then user experience and security are improved, but device complexity increases
Solution Approach 1:
The touch screen is designed to serve multiple functions: it acts as both the display interface and the fingerprint recognition surface. By integrating fingerprint sensors across the entire touch screen or specific zones, the system achieves multi-functionality where the same hardware component supports both user interaction and biometric authentication, thereby improving reliability without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the fingerprint recognition function with the existing touch screen structure, eliminating the need for separate fingerprint sensor modules. This consolidation integrates multiple functions into a unified system, enhancing authentication reliability while avoiding the complexity increase that would result from adding independent hardware components.
3Productivity
If full-screen fingerprint recognition is used, then productivity and security are enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The full-screen fingerprint recognition area is divided into multiple discrete sensing zones or pixels distributed across the touch screen. This segmentation approach allows each zone to independently detect fingerprint features, and the collective data from all zones enables full-screen recognition. The modular segmented structure reduces manufacturing precision requirements compared to a monolithic sensor system, as each segment can be manufactured and calibrated independently.
Data Source
AI summary
A method for fingerprint recognition is provided. An electronic device includes a touch screen. The touch screen has a fingerprint recognition area. The fingerprint recognition area is capable of being pressed by at least two fingers. The method includes the following. Touched areas in the fingerprint recognition area are selected as target touch areas upon detecting a touch operation on the touch screen. One target touch area corresponds to one finger which applies pressure to the touch screen. A fingerprint image in each target touch area is acquired to obtain at least one fingerprint image. Determine whether each of the at least one fingerprint image is matched with a corresponding fingerprint image template of a preset fingerprint image template set. A preset operation corresponding to the touch operation is triggered, upon determining that each of the at least one fingerprint image is matched with a corresponding fingerprint image template.