Shake Correction Module Hinge Mechanism for Camera Modules
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Solution Overview
Problem
Digital camera modules are sensitive to external disturbances and require effective shake correction mechanisms to maintain image quality, especially when subjected to forces applied through flexible printed circuit boards.
Innovation Solution
A shake correction module with a hinge member that supports rotational movement of an optical module along two axes using elastic characteristics, combined with a voice coil motor for precise vibration control, and a flexible printed circuit board design that minimizes external force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flexible printed circuit board is used to electrically connect the image sensor, then ease of assembly and flexibility are improved, but external disturbances are transmitted to the optical module causing image distortion
Solution Approach 1:
The patent introduces a damping member as an intermediary between the flexible printed circuit board and the optical module. This damping member absorbs external disturbances before they reach the optical module, while still allowing the flexible PCB to perform its electrical connection function. The damping member acts as a mediator that blocks harmful force transmission while maintaining the beneficial electrical connectivity.
Solution Approach 2:
The patent extracts the force-blocking function from the flexible PCB system by adding a separate damping member. This allows the flexible PCB to专注于 its primary function of electrical connection and flexibility, while the damping member专门 handles the force attenuation task, creating a clear functional separation.
2Measurement precision
If linear vibration correction along X and Y axes is applied, then correction in those specific directions is improved, but correction effectiveness deteriorates when shake occurs in other directions
Solution Approach 1:
The patent transitions from linear vibration correction to rotational movement correction by enabling the optical module to rotate around multiple axes. This dimensional change in the correction mechanism allows the system to handle shake in any direction through rotational degrees of freedom, rather than being limited to linear movements along specific axes.
Solution Approach 2:
The patent implements dynamic rotational movement capability that can adapt to shake in any direction. The optical module is designed to rotate around first and second axes that are not collinear, creating a dynamic correction system that can respond to multi-directional shake rather than being constrained to fixed linear correction paths.
3Adaptability or versatility
If the optical module is designed to rotate around two non-collinear axes, then shake correction adaptability is improved, but device complexity increases
Solution Approach 1:
The patent merges the rotational support function into the housing structure itself, rather than using separate complex mechanical components. The housing is designed to directly support the optical module's rotational movement around two axes, integrating the correction mechanism into the existing structure and reducing overall device complexity.
Solution Approach 2:
The housing serves multiple functions: it provides structural support, enables rotational movement for shake correction, and positions the optical module. This multi-functionality reduces the need for additional dedicated components, thereby reducing device complexity while maintaining the adaptive multi-axis rotation capability.
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
The solution effectively corrects camera module shakes by allowing the optical module to swing on two axes, reducing image distortion and maintaining image quality even when external disturbances are applied, while simplifying manufacturing and assembly processes.
Implementation Method 1
a hinge member which supports rotation movement of an optical module based on each of at least two axes at least by using an elastic characteristic of the hinge member
Implementation Method 2
a driving motor which rotates the hinge member based on the each of the at least two axes with respect to the base member
Data Source
AI summary
A shake correction module, a camera module including the same, and a method of manufacturing the camera module are provided. The shake correction module includes: a hinge member which supports rotation movement of an optical module based on each of at least two axes at least by using an elastic characteristic of the hinge member, wherein the optical module comprises an image sensor; a base member to which the hinge member is installed; and a driving motor which rotates the hinge member based on the each of the at least two axes with respect to the base member, in order to manufacture a structure for supporting two-axes rotation of the optical module to be simple and reliable with a low manufacturing cost.