Camera Package Lens Formation Using Contact Angle Regions
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Solution Overview
Problem
The existing methods for forming lenses on substrates result in increased manufacturing costs due to excessive resin usage and the need for larger molds with overflow sections, which limits the proximity of multiple lenses and increases substrate waste.
Innovation Solution
A camera package with a solid-state imaging element and a lens formed above a transparent substrate, where the lens formation region and the lens free region differ in contact angle, allowing for precise lens formation with minimal resin usage and smaller mold designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an overflow section is provided on the mold to trap excessive resin, then the lens can be formed with excellent yield, but the size of the mold increases and the distance between adjacent lenses cannot be reduced
Solution Approach 1:
The invention extracts the overflow section from the mold structure and relocates it to the substrate. The substrate now provides the overflow function through a dedicated region that receives excess resin, allowing the mold to be compact without sacrificing lens formation yield. This separation of functions resolves the contradiction between mold size and reliability.
Solution Approach 2:
The substrate acts as an intermediary between the mold and the lens formation process. By providing an overflow region on the substrate, the system mediates the excess resin flow that would otherwise require a large mold structure. This intermediary approach enables compact mold design while maintaining excellent yield through proper resin management.
2Reliability
If an overflow section is provided on the mold to trap excessive resin, then the lens can be formed with excellent yield, but the distance between adjacent lenses cannot be reduced, resulting in substrate loss
Solution Approach 1:
The overflow function is extracted from the mold and assigned to a specific region on the substrate. This allows the mold to be smaller and enables closer spacing of lenses on the substrate, reducing the overall substrate area required and minimizing substrate loss while maintaining high yield.
Solution Approach 2:
The substrate is given different local qualities: a specific region is designed with overflow characteristics to receive excess resin, while other regions are optimized for lens formation. This local differentiation allows efficient resin management and compact lens spacing, reducing substrate waste.
3Reliability
If resin is dropped in excessive amount to form a bulky lens with complicated shape, then the lens can be formed with excellent yield, but the manufacturing cost increases
Solution Approach 1:
The resin management function is extracted from the mold design and transferred to the substrate design. The substrate's overflow region controls resin distribution, allowing precise lens formation with appropriate resin amounts rather than requiring excessive resin, thereby reducing material costs while maintaining excellent yield.
Solution Approach 2:
The invention changes the parameter of resin amount from excessive to appropriate by implementing the overflow region on the substrate. This parameter optimization, combined with the substrate-based overflow control, achieves both cost efficiency and high yield by preventing resin waste.
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 approach reduces manufacturing costs by optimizing lens formation with precise resin distribution and mold design, enabling closer lens placement without substrate loss, thus lowering overall production expenses.
Implementation Method 1
a lens formation region in which the lens is formed above the transparent substrate and a lens free region around the lens formation region differ in contact angle
Data Source
AI summary
The present disclosure relates to a camera package, a method for manufacturing a camera package, and an electronic device with which it is possible to reduce manufacturing cost for lens formation.The camera package according to the present disclosure includes: a solid-state imaging element; and a lens formed above a transparent substrate that protects the solid-state imaging element. A lens formation region in which the lens is formed above the transparent substrate and a lens free region around the lens formation region differ in contact angle. The present disclosure can be applied to, for example, a camera package in which a lens is disposed above a solid-state imaging element, or the like.