Display Module Fingerprint Region Indication Control
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Solution Overview
Problem
In terminals with full-screen displays, users face difficulties in determining the fingerprint collection region when the screen is off, leading to complicated and unreliable fingerprint collection operations.
Innovation Solution
A display module that includes a control circuit to display a target image, such as a ripple-like pattern or sequentially arranged pictures, in the fingerprint collection region when the screen is off, using a self-light-emitting display panel and an optical fingerprint sensor to indicate the collection region and facilitate fingerprint detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the screen is turned off to save energy, then power consumption is reduced, but the fingerprint collection region cannot be indicated and users face difficulties in determining where to place their fingerprint
Solution Approach 1:
The system performs preliminary action by displaying indication information (such as icons or visual cues) in the fingerprint collection region before the user attempts to place their fingerprint. This preliminary visual guidance ensures users know where to position their fingerprint, solving the ease of operation problem while maintaining screen-off state for energy savings.
Solution Approach 2:
The patent utilizes color changes or visual pattern changes in the indication information to guide users to the correct fingerprint placement area. By using different colors or visual states (e.g., illuminated vs. non-illuminated regions), the system provides clear directional guidance without requiring the full screen to be active, thus balancing energy consumption with operational ease.
2Adaptability or versatility
If a pressure sensor is integrated in the fingerprint collection region on the glass cover, then the fingerprint collection function can be implemented, but the device structure becomes more complex
Solution Approach 1:
The patent merges the fingerprint collection function with the existing display panel structure. By integrating the optical fingerprint sensor behind the display panel and using the display panel itself as part of the fingerprint collection mechanism (through light emission and detection), the system reduces the need for separate pressure sensor assemblies and complex mechanical structures, thereby simplifying overall device complexity while maintaining fingerprint collection functionality.
Solution Approach 2:
The display panel serves multiple functions: it displays information to users and simultaneously acts as part of the fingerprint collection system by emitting light for optical fingerprint sensing. This multi-functionality eliminates the need for dedicated separate components for each function, reducing structural complexity while maintaining full adaptability for fingerprint collection.
3Ease of operation
If the display panel constantly lights up to indicate the fingerprint collection region, then users can easily locate the region, but the electroluminescent materials wear out faster
Solution Approach 1:
The system implements periodic action by intermittently lighting up the display panel to show indication information in the fingerprint collection region, rather than keeping it constantly illuminated. The display can activate periodically or on-demand when fingerprint collection is needed, providing sufficient visual guidance to users while significantly reducing the cumulative stress on electroluminescent materials and extending their operational lifespan.
Solution Approach 2:
The patent applies local quality by illuminating only the specific fingerprint collection region rather than the entire display panel. By restricting light emission to the local area where fingerprint placement is needed (using targeted pixel activation or localized light guides), the system provides clear directional guidance to users while minimizing the total energy consumption and stress on electroluminescent materials, thus prolonging their life.
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
Simplifies fingerprint collection operations and improves reliability by clearly indicating the fingerprint collection region on the screen-off state, while also prolonging the life of electroluminescent materials through controlled lighting patterns.
Implementation Method 1
a self light-emitting display panel
Implementation Method 2
Light emitted by the pixels in this region may be reflected to the optical fingerprint sensor via fingerprint ridges and fingerprint valleys of the fingerprint
Data Source
AI summary
The present disclosure provides a display module, and a display method and a terminal thereof, in the field of display technology. The display module includes a display panel and a control circuit; wherein the control circuit is configured to control a target region on the display panel to display a target image when the display panel is in an off-screen state, and the target region includes a fingerprint collection region. The present disclosure solves the problem that fingerprint collection operations on the terminal in the related art are complicated, and reliability is poor. The present disclosure is for fingerprint collection.