Handheld Device Fingerprint and Touch Sensor Integration
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Solution Overview
Problem
Current hand-held electronic devices with touch panels lack enhanced touch control functionality, particularly in integrating fingerprint recognition and object position/motion detection for improved user authentication and input methods.
Innovation Solution
A hand-held electronic device design featuring spatially separated touch sensor modules on multiple surfaces, including a fingerprint sensor and a touch sensor, which provide enhanced touch control functionality by integrating fingerprint scan and identification, and object position and motion detection, with a controller to analyze touch events and trigger corresponding functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate sensors are embedded for fingerprint recognition and touch detection, then authentication and input functionality are enhanced, but device complexity increases
Solution Approach 1:
The patent combines fingerprint sensor and touch sensor into a single integrated sensing module. The sensor array serves dual purposes: detecting fingerprint patterns for authentication and detecting touch events for input control, thereby reducing device complexity while maintaining enhanced functionality
Solution Approach 2:
The integrated sensor module performs multiple functions simultaneously - it can detect fingerprints for authentication, detect touch positions for input, and potentially detect pressure or other touch characteristics, making a single component serve multiple purposes and reducing the need for separate dedicated sensors
2Adaptability or versatility
If spatially separated touch sensor modules are used on multiple surfaces, then touch control functionality is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent divides the sensing functionality into separate modular sensor units that can be independently manufactured and then assembled onto different device surfaces. This segmentation allows each module to be produced using standardized processes while the overall system achieves complex multi-surface coverage
3Adaptability or versatility
If fingerprint sensor and touch sensor are integrated, then authentication and input methods are improved, but power consumption increases
Solution Approach 1:
The integrated sensor module can operate in different modes periodically or on-demand - switching between fingerprint scanning mode and continuous touch detection mode, or putting the fingerprint sensor into low-power standby while maintaining basic touch sensitivity, thereby managing power consumption while preserving dual functionality
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 device offers improved user authentication and input methods through fingerprint recognition and touch event analysis, enabling efficient and intuitive operation with reduced power consumption and enhanced user experience.
Implementation Method 1
Based on different sensing types, touch panels can be categorized into resistive touch panels, capacitive touch panels... In comparison to other touch panels, the capacitive touch panels are characterized by short response speed, favorable reliability, high definition
Data Source
Figure 1
Figure 2A~2B
Figure 2C
AI summary
A hand-held electronic device. A sensing surface is adapted to detect fingerprints and a contact of an object on the sensing surface. Storage stores a fingerprint signature. A controller is configured to determine whether a composition of detected fingerprints matches with the fingerprint signature and determine at least one character of the contact. The at least one character comprises a location on which the object contacts the sensing surface.