Image Sensor Substrate Spring Pattern for Tilt-Stable Movement
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Solution Overview
Problem
Existing camera devices require complex spring structures and multiple elastic members for lens barrel movement, leading to increased assembly processes and difficulty in tilt correction, with conventional technologies struggling to stabilize the image sensor during relative movements.
Innovation Solution
A substrate and sensor driving device with a novel spring structure that includes a connection pattern portion acting as both a signal transmitter and a spring, allowing for X-axis, Y-axis, and Z-axis movement, while minimizing tilt and simplifying the assembly process by eliminating the need for spring plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple elastic members are used to enable lens barrel movement in X, Y, and Z axes, then the image sensor can be stabilized during relative movements, but the device structure becomes complicated and the number of assembly processes increases
Solution Approach 1:
The patent combines multiple elastic members (leaf springs and wire springs) into an integrated suspension assembly that supports the image sensor. The leaf springs provide primary support and the wire springs supplementarily constrain tilt, merging multiple functions into a unified structure rather than using separate independent components for each degree of freedom.
Solution Approach 2:
The suspension assembly serves multiple functions simultaneously: it supports the image sensor weight, enables movement in X/Y/Z axes for focus and stabilization, and constrains unwanted tilt movements. The combination of leaf springs and wire springs creates a multi-functional system that handles both positioning and orientation control.
2Adaptability or versatility
If conventional spring structures with multiple elastic members are used, then the image sensor can move relative to the lens barrel, but the number of assembly processes increases
Solution Approach 1:
The patent integrates the elastic members into a unified suspension assembly where leaf springs and wire springs work together as a coordinated system. This merged structure reduces the number of separate assembly operations needed compared to installing multiple independent elastic components separately.
Solution Approach 2:
The suspension assembly is designed to dynamically adapt to movement requirements in multiple axes while maintaining structural integrity. The elastic members provide controlled compliance that allows necessary movements while automatically constraining unwanted degrees of freedom through their geometric configuration.
3Adaptability or versatility
If leaf spring structure is used for electrical connection, then the image sensor can move, but tilt occurs during movement that reduces accuracy
Solution Approach 1:
The wire springs are pre-configured to counteract tilt tendencies before they occur during sensor movement. By positioning the wire springs to provide opposing elastic forces, the system proactively prevents tilt rather than correcting it after the fact, maintaining accuracy throughout the movement range.
Solution Approach 2:
The patent uses a composite elastic structure combining leaf springs (providing primary support) with wire springs (providing tilt constraint). This composite approach leverages the strengths of different elastic element types to simultaneously achieve movement capability and tilt suppression that neither component could achieve alone.
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 stabilizes the image sensor during relative movements, reduces manufacturing complexity, and enhances operational reliability by suppressing tilt phenomena, thus improving the overall performance of camera modules.
Implementation Method 1
a connection pattern portion (652-3) disposed on the second open region (OR2) between the first insulating portion (651-1) and the second insulating portion (651-2), and electrically connecting between the first lead pattern portion (652-1) and the second lead pattern portion (652-2)
Implementation Method 2
capable of suppressing the tilt occurring when the image sensor moves by adding a wire spring to a leaf spring structure serving as an electrical connection with the image sensor
Data Source
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AI summary
A substrate according to an embodiment includes an insulating layer; a first pattern portion disposed on the insulating layer; and a second pattern portion disposed on the insulating layer and spaced apart from the first pattern portion, wherein the insulating layer includes a first insulating portion including a first open region; and a second insulating portion disposed to surround an outside of the first insulating part and spaced apart from the first insulating portion with a second open region therebetween; wherein the first pattern portion includes a first lead pattern portion disposed on the first insulating portion; a second lead pattern portion disposed on the second insulating portion; and a connection pattern portion having one end connected to the first lead pattern portion and the other end connected to the second lead pattern portion, and disposed on the second open region; wherein the connection pattern portion includes a bent portion positioned on a corner of the second open region.