Fingerprint Identification Module Keycap Integration
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Solution Overview
Problem
Conventional fingerprint identification modules face challenges in integrating fingerprint identification functions into components with pressing functions, such as keyboard keys, due to poor adhesion and complex manufacturing processes.
Innovation Solution
A fingerprint identification module design featuring a keycap unit with an accommodating space and a fingerprint identification chip where at least a portion of the chip's surface abuts against the keycap unit, using insert molding and additional fastening units to ensure tightness and stability, reducing manufacturing costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fingerprint identification chip is provided as an additional component disposed between a keycap and a support member, then the fingerprint identification function can be integrated, but the adhesion between the chip and other components becomes poor and the manufacturing process becomes complicated
Solution Approach 1:
The patent combines the fingerprint identification chip with the keycap unit into an integrated structure. The chip is embedded within the keycap unit, merging two previously separate components (keycap and fingerprint chip) into a single unified component, thereby simplifying the manufacturing process and improving adhesion
Solution Approach 2:
The keycap unit is designed to serve multiple functions: it acts as both the pressing component for keyboard input and the housing for the fingerprint identification chip. This multi-functional design eliminates the need for separate fingerprint chip components and reduces manufacturing complexity
2Adaptability or versatility
If a fingerprint identification chip is provided as an additional component disposed between a keycap and a support member, then the fingerprint identification function can be integrated, but the adhesion between the chip and other components becomes poor
Solution Approach 1:
The fingerprint identification chip is merged with the keycap unit through integral formation, creating a unified structure where the chip and keycap become a single component. This eliminates adhesion issues between separate components while maintaining fingerprint identification functionality
Solution Approach 2:
The keycap unit is pre-designed with an accommodating space and fastening structures that securely hold the fingerprint identification chip in place before final assembly. This preliminary integration ensures proper adhesion and positioning from the outset
3Reliability
If insert molding and additional fastening units are used to ensure tightness, then adhesion and stability improve, but manufacturing complexity increases
Solution Approach 1:
The fastening structures are integrated directly into the keycap unit through insert molding, combining the keycap and fastening mechanisms into a single manufacturing step. This approach improves adhesion and stability while avoiding the need for separate fastening components and assembly steps
Data Source
AI summary
A fingerprint identification module includes a keycap unit and a fingerprint identification chip. The keycap unit has an accommodating space and a first surface corresponding to the accommodating space. The fingerprint identification chip has a second surface. The fingerprint identification chip is disposed in the accommodating space, and at least a portion of the second surface of the fingerprint identification chip abuts against the first surface of the keycap unit.