Vibrating Agitator for Semiconductor Resin Mixing
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Solution Overview
Problem
Conventional mixing devices for semiconductor sealing resin compositions often introduce metallic foreign substances due to blade scratches, leading to short circuits, and are inefficient, requiring long mixing times.
Innovation Solution
An agitating and mixing device with a container and agitating members that vibrate in multiple directions to prevent metallic contamination and reduce mixing time, using a nonmetallic container and agitating members to ensure uniform mixing of resin and inorganic particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a high speed mixer with a rotating blade is used to mix the resin composition, then the mixing speed is improved, but metallic foreign substances are introduced due to blade scratches on the container
Solution Approach 1:
The harmful rotating blade is extracted/removed from the mixing system. Instead of using a blade that contacts and scratches the container, the invention uses a vibration-based mixing mechanism where the container itself is vibrated to achieve mixing without a rotating blade, thereby eliminating the source of metallic foreign substances.
Solution Approach 2:
The mechanical rotating blade system is replaced with a vibration-based system. The container is vibrated in multiple directions to achieve mixing through vibrational energy rather than mechanical blade rotation, substituting a harmful mechanical contact system with a non-contact vibrational system.
2Object-affected harmful factors
If a vibration type mixing device is used to prevent metallic foreign substances, then contamination is reduced, but mixing time increases
Solution Approach 1:
The container is made dynamically movable through multi-directional vibration. By applying vibrations in multiple directions simultaneously or sequentially, the mixing process becomes more efficient and faster compared to single-direction vibration, reducing mixing time while maintaining contamination-free operation.
Solution Approach 2:
The mixing action is extended from single-direction vibration to multi-directional vibration. By adding vibrational components in multiple dimensions, the mixing efficiency is enhanced, allowing faster mixing times while still preventing metallic foreign substance contamination through the non-contact vibration mechanism.
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
Prevents metallic foreign substances from entering the resin composition, reducing the risk of short circuits and significantly shortening the mixing time while maintaining high uniformity, as evidenced by a standard deviation of weight fraction among ashes less than 0.2.
Implementation Method 1
a driving device for vibrating the container... mix the composition by vibrating the container using the driving device
Data Source
AI summary
An agitating and mixing device 1 of the present invention includes a container 2 for storing the composition, an agitating member 3 for agitating the composition, which is inserted in the container 2, and a driving device 4 for vibrating the container 2. The agitating member 3 has a rod-like portion 32 having one end portion and another end portion, a plate-like portion 31 provided on the one end portion of the rod-like portion 32 and the grip portion 33 provided on the other end portion of the rod-like portion 33. The plate-like portion 31 is perpendicular to the rod-like portion 32. The agitating member 3 is configured to agitate the composition by spacing the plate-like portion 31 apart from the bottom surface of the container 2.