Fingerprint Sensor Fixing Structure for Display Assembly Stability
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Solution Overview
Problem
During the fabrication of display devices, finger print sensors can become dislodged from their optimal position, leading to reduced accuracy.
Innovation Solution
A display device design incorporating a protective layer with a fingerprint sensor fixed by first and second fixing members made of different materials, ensuring secure attachment and maintaining sensor accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single fixing member is used to attach the fingerprint sensor, then the device structure is simple, but the fingerprint sensor may become dislodged during fabrication leading to reduced accuracy
Solution Approach 1:
The fixing structure is divided into multiple fixing members (first fixing member and second fixing member) that are positioned at different locations on the fingerprint sensor. This segmentation allows each fixing member to independently secure the sensor at specific points, preventing dislodgment during fabrication while maintaining overall structural simplicity
Solution Approach 2:
Multiple fixing members are combined to work together in securing the fingerprint sensor. The first fixing member and second fixing member are integrated into a unified fixing system that collectively provides enhanced position stability without significantly increasing device complexity
2Reliability
If fixing members made of the same material are used, then the manufacturing process is simpler, but the attachment security may be insufficient to prevent sensor dislodgment
Solution Approach 1:
Different fixing members are made from different materials optimized for their specific functions and positions. The first fixing member may use a material optimized for bonding to the substrate, while the second fixing member uses a material optimized for bonding to the fingerprint sensor, providing locally optimized attachment security
Solution Approach 2:
The fixing structure employs composite materials by using multiple fixing members made from different materials. This composite approach allows each material to contribute its unique properties (such as adhesion strength, flexibility, or thermal stability) to the overall fixing system, enhancing attachment security
Data Source
AI summary
A display device includes a protective layer. A display panel is disposed on an upper surface of the protective layer. The display panel includes a display area configured to display an image and a non-display area at least partially surrounding the display area. A cover panel is disposed on a back surface of the protective layer. The cover panel includes an opening that exposes the protective layer. A fingerprint sensor is disposed within the opening of the cover panel. The fingerprint sensor is configured to sense a fingerprint. A first fixing member is disposed on one surface of the fingerprint sensor. A second fixing member at least partially overlaps at least one side of the first fixing member, the second fixing member fixing the fingerprint sensor. The first fixing member and the second fixing member each include at least one different material from each other.