Display-Integrated Fingerprint Assembly for Full-Screen Terminals
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Solution Overview
Problem
The placement of fingerprint modules in mobile devices is limited by their size, leading to design constraints that affect screen-to-body ratio, fingerprint identification rates, and overall device structure.
Innovation Solution
Integrate the fingerprint collection layer directly onto the display module, allowing it to be placed anywhere on the display area, including above or under the screen, by connecting it to a flexible circuit board without packaging, thus minimizing thickness and avoiding structural impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fingerprint module is placed on the bottom of the front of the mobile phone, then the fingerprint module can be integrated into the device structure, but the screen-to-body ratio cannot be sufficiently large
Solution Approach 1:
The fingerprint collection layer is integrated directly into the display module plane, utilizing the display module's surface area rather than dedicating a separate three-dimensional space. This dimensional integration allows the fingerprint function to coexist with the display area, enabling full-screen or near-full-screen designs while maintaining fingerprint collection capability at any position on the display surface.
2Area of stationary object
If the fingerprint module is placed on the side of the mobile phone, then space can be utilized, but the fingerprint identification rate decreases due to sensor size limitations
Solution Approach 1:
The fingerprint collection layer is merged with the display module, forming an integrated structure where both functions share the same physical space. This merging eliminates the need for separate fingerprint module packaging and allows the sensor to achieve sufficient size within the display area, thereby maintaining high fingerprint identification rates while utilizing the display module's space efficiently.
3Adaptability or versatility
If the fingerprint module is placed on the back of the mobile phone, then design flexibility is achieved, but the industry design is adversely affected
Solution Approach 1:
The display module serves multiple functions: it provides display functionality and simultaneously integrates the fingerprint collection layer for biometric authentication. This multi-functionality allows the fingerprint sensor to be positioned anywhere on the display surface, providing design flexibility while maintaining a unified front-facing design that aligns with industry trends rather than disrupting them.
4Adaptability or versatility
If the fingerprint module is attached under an LCM, then integration is achieved, but the thickness of the fingerprint module impacts the structure of the mobile phone and battery size
Solution Approach 1:
The fingerprint collection layer is extracted from the traditional separate fingerprint module packaging and integrated directly into the display module structure. This extraction eliminates the need for additional packaging layers and dedicated thickness allocation, allowing the fingerprint function to be achieved within the existing display module thickness without impacting the overall device structure or battery size.
Data Source
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AI summary
The present disclosure provides a terminal and a method of manufacturing the terminal. The terminal includes a display module and a fingerprint identification assembly. The fingerprint identification assembly includes: a fingerprint collection layer, attached to the display module and configured to collect fingerprint information; a fingerprint identification module, configured to identify the fingerprint information; and a flexible circuit board. The flexible circuit board is led out from a side edge of the fingerprint collection layer, and is connected to the fingerprint identification module.