Sliding Fingerprint Sensor for Flexible Display Authentication
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Solution Overview
Problem
Existing electronic devices with fingerprint sensors struggle to perform authentication when a touch is input to an area other than the designated fingerprint-sensing area on the display, especially when the device's display is flexible and can be slid, folded, or rolled.
Innovation Solution
An electronic device with a sliding housing and a rollable display, where the fingerprint sensor is moved by the sliding movement of the housing, allowing authentication to be performed based on the touch area on the display corresponding to the fingerprint sensor's position, and adjusting the sensor's position through sliding to enable authentication when the touch is outside the initial sensing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fingerprint sensor is fixed at a specific area on the display, then the authentication function is reliable when touching the correct area, but the device cannot perform authentication when the touch is outside the initial sensing area
Solution Approach 1:
The fingerprint sensor is made movable through a sliding mechanism that allows it to reposition dynamically. When a user touches an area outside the initial sensing zone, the sensor slides along the display to move under the touch point, enabling authentication functionality across the entire flexible display area rather than being confined to a fixed position.
2Adaptability or versatility
If the display area is extended through sliding movement, then the device provides enhanced flexibility and usability, but the fingerprint sensor must also be moved to maintain authentication capability
Solution Approach 1:
The fingerprint sensor is integrated with the sliding display mechanism so that they move together as a unified system. The sensor is positioned on the same movable component as the display, ensuring that when the display slides to extend or contract, the sensor automatically follows and maintains its relative position, eliminating the need for separate positioning control systems.
3Adaptability or versatility
If the fingerprint sensor is moved by sliding the second housing, then authentication can be performed across different display areas, but the mechanical structure becomes more complex
Solution Approach 1:
The second housing serves multiple functions: it acts as both the structural component that enables display sliding and as the mounting platform for the fingerprint sensor. This multi-functional design allows the same mechanical structure to achieve both display flexibility and sensor repositioning without requiring additional independent mechanisms, thereby reducing overall structural complexity.
Data Source
AI summary
An electronic device is provided. The electronic device includes a first housing, a second housing configured to slidably move relative to the first housing, a display, wherein a display area of the display, which is exposed to an outside of the electronic device, can be extended or reduced based on a sliding movement of the second housing, a fingerprint sensor configured to be moved by the sliding movement of the second housing, at least one processor including processing circuitry, and memory storing instructions. The instructions, when executed by the at least one processor individually or collectively, cause the electronic device to, based on a touch area touched by the user on the display corresponding to a first area corresponding to the fingerprint sensor in the display, perform an authentication using the fingerprint sensor, based on the touch area not corresponding to the first area, control the sliding movement of the second housing so that the first area is located at a position where the authentication can be performed, and perform the authentication, based on the sliding movement of the second housing.