Image Sensor Module with Segmented Protective Layer
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Solution Overview
Problem
Existing image sensor modules face challenges in achieving precise alignment and secure mounting within camera systems due to the limitations of protective layers, which often interfere with the edge regions, leading to potential mechanical damage and contamination, while also affecting light transmission and heat management.
Innovation Solution
An image sensor module design where at least two edge regions of the image sensor surface are not covered by a protective layer, allowing for stable securing and precise alignment, with the protective layer, such as a glass lid or transparent casting compound, providing mechanical protection and optimal light transmission without interfering with the edge regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective layer covers the entire image sensor surface, then mechanical protection and contamination prevention are improved, but alignment precision and mounting stability deteriorate due to interference with edge regions
Solution Approach 1:
The protective layer is segmented to cover only the active imaging area while leaving edge regions exposed. This segmentation allows the protective layer to provide mechanical protection where needed while maintaining alignment precision through exposed edges that can be used for mounting and positioning.
Solution Approach 2:
The protective layer is applied with local quality differentiation - fully covering the central imaging surface while intentionally leaving edge regions uncovered. This local variation in coverage provides both protection for the sensitive imaging area and exposed edges for precise mounting alignment.
2Strength
If a protective layer is added to protect the image sensor, then mechanical strength and contamination resistance are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The protective layer is extracted as a separate, removable component rather than being integrated into the image sensor structure itself. This allows the protective layer to be applied or removed independently, simplifying manufacturing and assembly while still providing the necessary mechanical protection.
3Area of stationary object
If the protective layer extends to the edges of the image sensor, then coverage and protection are improved, but mounting stability and alignment precision worsen due to lack of exposed edge regions
Solution Approach 1:
The protective layer coverage is segmented to stop before reaching the edges of the image sensor. This creates a clear distinction between the protected imaging area and the exposed mounting edges, allowing both full coverage protection and stable mounting to be achieved 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
This design enables highly precise and stable installation of the image sensor module, ensuring mechanical protection, optimal light transmission, and effective heat management, while allowing for reliable securing and accurate alignment within camera systems, reducing the need for additional tilting and alignment components.
Implementation Method 1
optimal transmission of light of a defined wavelength can be ensured
Data Source
AI summary
An image-sensor module includes an image sensor and a protective layer that covers a subregion of an image-sensor surface of the image sensor, where at least two edge regions of the image-sensor surface, for example, edge regions situated at opposite edges of the image sensor, are not covered by the protective layer.