In-Screen Fingerprint Identifier for Touch Display Positioning
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Solution Overview
Problem
In terminals with in-screen fingerprint detection, users face difficulty in intuitively determining the position of the fingerprint detector, limiting the ability to perform fingerprint recognition and unlock the screen effectively due to a high screen-to-body ratio design.
Innovation Solution
A method and terminal implementation that displays a fingerprint recognition identifier on the touch display screen when a user's operation meets a preset condition, such as a capacitance signal threshold, to guide the user to the correct recognition area, enabling fingerprint recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a fingerprint detector is placed below the touch display screen to achieve in-screen fingerprint detection, then the screen-to-body ratio is improved, but the user cannot intuitively determine the position of the fingerprint detector
Solution Approach 1:
A fingerprint recognition identifier is introduced as an intermediary visual indicator on the touch display screen to guide users to the correct fingerprint recognition area. This identifier acts as a mediator between the invisible fingerprint detector and the user, solving the location identification problem while maintaining the in-screen design.
Solution Approach 2:
The fingerprint recognition identifier utilizes visual display (color or light changes) on the touch display screen to indicate the fingerprint recognition area. This visual feedback mechanism helps users intuitively locate the detector position without compromising the screen-to-body ratio.
2Ease of operation
If a fingerprint key is used to maintain front-facing fingerprint detection, then user operation habit is preserved, but the screen-to-body ratio is greatly limited
Solution Approach 1:
The fingerprint detector is merged with the touch display screen structure, placing the detector below the screen surface. This integration allows the fingerprint recognition function to be embedded within the display area, eliminating the need for separate physical fingerprint keys and increasing the screen-to-body ratio.
3Device complexity
If the fingerprint detector is placed below the touch display screen, then device structure is simplified, but the user cannot see the position of the fingerprint detector
Solution Approach 1:
The fingerprint recognition identifier serves as a visual intermediary that conveys position information about the hidden fingerprint detector to the user. This mediator compensates for the loss of direct visual access to the detector while keeping the device structure simple and integrated.
Solution Approach 2:
The fingerprint recognition identifier creates a visual copy or representation of the fingerprint detector's location on the display screen. This visual copy provides users with the necessary positional information without requiring the physical detector to be visible.
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
Enables users to perform fingerprint recognition by clearly indicating the recognition area, overcoming the challenge of invisible fingerprint detectors and maintaining a high screen-to-body ratio.
Implementation Method 1
determining, by the terminal based on a capacitance signal generated by the operation of the user on the touch display screen
Data Source
AI summary
A fingerprint unlocking method and a terminal are provided. The method may be applied to a terminal having an in-screen fingerprint detection function. When the terminal is in a screen-locked state, the terminal determines whether an operation of a user meets a preset condition. If the operation of the user meets the preset condition, a fingerprint recognition identifier is displayed on a touch display screen of the terminal. A display area of the fingerprint recognition identifier is an area in which fingerprint recognition can be performed. The method resolves a problem that the user cannot perform fingerprint unlocking because the user cannot see a position of a fingerprint detector.