Base Tape Inclined Discharge Path for Antistatic Reliability
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Solution Overview
Problem
Conventional base tapes with conductive coatings face issues of inconsistent carbon black density due to pressure during molding, leading to reduced antistatic ability, as the carbon black layer can be torn, compromising the electrical discharge path.
Innovation Solution
A base tape design with a rectangular or substantially rectangular parallelepiped accommodating section featuring a carbon layer on the surface and an inclined electrical discharge path portion, which reduces stress on the carbon layer and maintains conductivity, even when the tape is molded, ensuring consistent antistatic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional base tape with a flat accommodating section is used, then the manufacturing process is simple, but the carbon black layer is torn during molding causing inconsistent density and reduced antistatic ability
Solution Approach 1:
The accommodating section is designed with an inclined surface instead of a flat surface, creating a curved/angled geometry that reduces stress concentration during molding. This curved design prevents the carbon black layer from tearing while maintaining consistent density, thereby resolving the contradiction between reliability and manufacturing precision.
2Ease of manufacture
If the accommodating section is molded with pressure perpendicular to the carbon layer, then the accommodating section is formed properly, but the carbon black layer is torn and density becomes inconsistent
Solution Approach 1:
The inclined surface design distributes the molding pressure more evenly across the carbon black layer, preventing localized stress concentration that causes tearing. This allows proper forming of the accommodating section while maintaining the integrity and consistent density of the carbon black layer, thus resolving the contradiction between ease of manufacture and reliability.
3Reliability
If the carbon layer is extended vertically to ensure adequate discharge path, then antistatic coverage is improved, but the carbon layer becomes more susceptible to tearing during molding
Solution Approach 1:
The inclined surface provides an angled electrical discharge path that achieves adequate discharge capability without requiring excessive vertical extension of the carbon layer. This angled geometry reduces the span of the carbon layer, minimizing stress during molding and preventing tearing, thus resolving the contradiction between reliability and strength.
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 base tape effectively protects electronic components from static electricity by maintaining a conductive carbon layer and reducing the likelihood of tearing, thereby enhancing the antistatic ability and preventing unsatisfactory mounting due to static charges.
Implementation Method 1
a carbon layer provided to a surface layer which comes into contact with an electronic component, and the base tape is thus satisfactorily conductive, and even when the electronic component is electrically charged, it is able to be electrically discharged through the carbon layer
Data Source
AI summary
A base tape includes an accommodating section having a rectangular or substantially rectangular parallelepiped, and the base tape includes a surface layer including a carbon layer. The accommodating section includes a bottom surface portion, a side wall portion including a plurality of surfaces, and an opening portion. The side wall portion includes at at least one surface thereof an edge portion located between the bottom surface portion and the opening portion and an electrical discharge path portion inclined from the edge portion toward the opening portion. An electronic component array includes the base tape, an electronic component accommodated in the accommodating section of the base tape, and a cover tape that covers the accommodating section.