Camera Module FPCB Folded Segmentation for OIS Stability
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Solution Overview
Problem
Existing camera modules face challenges in smoothly operating Optical Image Stabilizer (OIS) functions due to interference and rigidity issues, particularly when correcting image shakes caused by user handshakes.
Innovation Solution
A camera module design incorporating a handshake correction unit with a driving unit that tilts the camera body using electromagnetic interaction, coupled with an elastic unit for restoration, and a Flexible Printed Circuit Board (FPCB) with folded areas to reduce rigidity and interference, allowing smooth OIS driving operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid FPCB structure is used to ensure structural stability, then structural support is improved, but OIS driving smoothness deteriorates due to interference and rigidity
Solution Approach 1:
The FPCB is divided into multiple connection units (first, second, and third connection units) that are folded at specific positions. This segmentation allows different parts of the FPCB to have different mechanical properties - some parts remain rigid for structural support while folded parts provide flexibility to reduce interference with OIS driving operations.
Solution Approach 2:
The FPCB incorporates folded connection units that can dynamically adjust their configuration. The folded portions allow the FPCB to flex and move with the camera body during OIS operations, reducing mechanical interference while maintaining electrical connectivity and structural integrity.
2Ease of operation
If the FPCB is folded multiple times to reduce rigidity, then OIS driving smoothness is improved, but structural support deteriorates
Solution Approach 1:
Different regions of the FPCB have different structural qualities. The connection units that require flexibility are folded to reduce rigidity locally, while other parts of the FPCB maintain their rigid structure to provide necessary structural support. This localized modification allows the system to achieve both OIS smoothness and structural stability simultaneously.
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 prevents image quality degradation by correcting image shakes and enables seamless OIS operation by reducing FPCB rigidity and interference, enhancing the camera module's ability to stabilize images.
Implementation Method 1
the driving unit may tilt the camera body by electromagnetic interaction
Implementation Method 2
the elastic unit may be a wire spring or a leaf spring
Data Source
AI summary
The present invention relates to a camera module, the camera module including a camera body including a handshake correction unit configured to correct an image shake caused by handshake, and an FPCB (Flexible Printed Circuit Board) including a first connection unit connected to the camera body, a second connection unit connected to the first connection unit by being folded, and a third connection unit connected to the second connection unit by being folded.