Camera Module Adhesive Bonding via Vertical Surface Shearing
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Solution Overview
Problem
The increasing demand for advanced camera features in mobile devices, such as smartphones and tablets, leads to weight and mechanical stability issues due to the addition of features like optical image stabilization and autofocus, which can cause mechanical failures during shocks, such as drops, as existing adhesive-based assembly methods struggle to provide sufficient adhesion strength without increasing the module's size.
Innovation Solution
The use of an additional vertical surface on the base component to increase the adhesive contact area, combined with an adhesive shearing technique that applies adhesive to both horizontal and vertical surfaces, ensuring strong adhesion without expanding the module's footprint, and utilizing UV curing to secure the adhesive in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional adhesive is used to increase adhesion strength, then reliability improves, but device complexity increases
Solution Approach 1:
The patent transitions from applying adhesive only on horizontal surfaces to applying adhesive on vertical surfaces as well. This dimensional change allows additional adhesive contact area without increasing the horizontal footprint, thereby improving adhesion strength while maintaining simple assembly procedures and avoiding increased device complexity.
2Reliability
If adhesive contact area is increased to improve adhesion, then reliability improves, but module size increases
Solution Approach 1:
The patent utilizes vertical surfaces for adhesive application, effectively moving the adhesive contact area from the horizontal plane to the vertical dimension. This allows the adhesive contact area to increase while the module's horizontal footprint remains unchanged, resolving the contradiction between reliability improvement and size control.
3Adaptability or versatility
If camera features are added to improve functionality, then adaptability improves, but weight increases
Solution Approach 1:
By applying adhesive on vertical surfaces, the patent strengthens the bond between components to support heavier camera features (such as OIS and autofocus mechanisms) without adding extra structural weight. The improved adhesion allows the existing lightweight structure to reliably support increased functionality, thus improving adaptability without proportionally increasing weight.
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
This approach enhances the adhesion strength between camera module components, improving the module's reliability against mechanical stress and shock, such as drops, while maintaining a compact size.
Implementation Method 1
The adhesive may be sheared and UV cured to secure the second component to the first component
Data Source
AI summary
A camera module may be assembled from a base component formed of a horizontal surface and having a raised wall that extends vertically from the horizontal surface and a housing component having a vertical surface that affixes to, with adhesive, the raised wall of the base component. Assembly of the camera module may include dispensing adhesive along a top edge of the raised wall to partially overhang the edge and placing the housing component down onto the base component. During assembly, the adhesive that is distributed on the top surface of the raised wall can be sheared or otherwise distributed by the action of the a corresponding wall of the housing component moving to past the top surface and causes at least some of the adhesive to spread between opposing surfaces of respective vertical walls of the base component and the housing component of the camera. The adhesive is then cured.