Image Sensor Driving Device Using Planar Coil Magnet Arrangement
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Solution Overview
Problem
Existing image sensor driving devices for thin electronic devices, such as smartphones, face challenges in applying sensor-shifting systems due to their thickness, which prevents effective prevention or correction of image blurring caused by camera shaking.
Innovation Solution
A thin image sensor driving device is developed using a sensor-shifting system with a coil and magnet mechanism, allowing the image sensor to move in the second and third axial directions, supported by a mechanism that reduces the device's thickness, enabling its integration into thin electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor-shifting system with overlapping first and second stages is used, then image blurring correction capability is improved, but device thickness in the Z direction increases
Solution Approach 1:
The patent repositions the coil and magnet components from overlapping in the Z-axis direction to being arranged in the X-Y plane directions. Specifically, the first coil is disposed on the front surface of the first stage, the second coil on the rear surface, the first magnet on the rear surface of the first stage, and the second magnet on the front surface of the second stage. This spatial rearrangement eliminates the need for Z-axis overlap, thereby reducing device thickness while preserving the sensor-shifting functionality for image blurring correction.
2Device complexity
If the first and second stages are overlapped in the Z axial direction, then the structure can be compact, but the device becomes too thick for thin electronic devices like smartphones
Solution Approach 1:
The patent redistributes the coil and magnet components across different surfaces and stages in the X-Y plane rather than stacking them in the Z direction. The first coil and first magnet are on the first stage, while the second coil and second magnet are on the second stage, with all components arranged to avoid Z-axis overlap. This maintains structural integration and compactness while achieving reduced thickness suitable for thin electronic devices.
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 or corrects image blurring caused by camera shaking while reducing the device's thickness, making it suitable for integration into thin electronic devices like smartphones.
Implementation Method 1
said driving mechanism includes a coil portion and a magnet portion facing opposite said coil portion, said coil portion driving said image sensor assembly to be moved in said second axial direction or in said third axial direction with respect to said fixing portion
Data Source
AI summary
An image sensor driving device includes a fixing portion, an image sensor assembly that is moved with respect to the fixing portion, a driving mechanism and a support mechanism. The image sensor assembly includes an image sensor of the rectangular form. The direction of the normal to the light receiving surface of the image sensor is a first axial direction and the directions perpendicular to the first axial direction and each other are a second axial direction and a third axial direction, respectively. The driving mechanism includes a coil portion for driving the image sensor assembly in the second axial direction or in the third axial direction with respect to the fixing portion and a magnet portion provided for facing opposite the coil portion, the coil portion being disposed on one and the magnet portion being disposed on the other of the image sensor assembly and the fixing portion.