Fixing-Part PCB With Cuttable Connection for Sensor Positioning
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Solution Overview
Problem
Existing optical image stabilization modules face issues with sensor part movement due to weak external impacts during assembly, requiring high resistance from flexible parts which increases current consumption and module size due to thicker assembly guides.
Innovation Solution
A printed circuit board design with a fixing part coupled to the housing, a connection part extending to connect the fixing part with the sensor part, and a flexible part surrounding the sensor part, allowing the connection part to be cut post-assembly for precise positioning and reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the resistance of the flexible part is made high to prevent movement of the sensor part, then the sensor part positioning stability is improved, but the current consumption increases
Solution Approach 1:
The flexible part is divided into a first flexible part and a second flexible part that are spatially separated. The first flexible part has higher resistance for positioning stability, while the second flexible part has lower resistance for reduced current consumption. This segmentation allows each part to serve different functional requirements independently, resolving the contradiction between positioning stability and current consumption.
2Reliability
If the assembly guide is made thicker for stability of the module assembly, then the assembly stability is improved, but the overall size of the module increases
Solution Approach 1:
The assembly guide is divided into a first assembly guide and a second assembly guide with different thicknesses. The first assembly guide has greater thickness for stability, while the second assembly guide has smaller thickness to control overall size. This segmentation enables the system to achieve both assembly stability and compact size by assigning different structural requirements to different guides.
Solution Approach 2:
Different regions of the assembly guide have different local properties (thicknesses). The first assembly guide region provides enhanced stability where needed, while the second assembly guide region maintains compact dimensions. This local quality differentiation allows the assembly guide to simultaneously satisfy both stability and size requirements without compromising either aspect uniformly across the entire structure.
Data Source
AI summary
An electronic device according to an embodiment of the present disclosure may comprise: a drive unit including a camera lens; a housing in which the drive unit is disposed and encompassing the drive unit; and a printed circuit board disposed in at least a portion of the housing and the drive unit, wherein: the printed circuit board comprises: a sensor part, a fixing part coupled to the housing, a connection part extending while connecting the fixing part and the sensor part to each other, and a flexible part surrounding at least a portion of the sensor part and connected to the sensor part and the fixing part; and the connection part is configured to be cut based on the fixing part being coupled to the housing.