Memory Card Switch Guide Unit Molding Integration
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Solution Overview
Problem
Conventional memory cards with writing permitting/prohibiting setting elements face limitations in size due to housing constraints and require complex and costly manufacturing processes, making it difficult to produce highly integrated memory cards.
Innovation Solution
A memory card design that eliminates the housing process by using a substrate with a semiconductor chip, a switch guide unit with a slot, and a molding member to encapsulate the switch guide unit, allowing the switch to be inserted and slid, thereby enabling a writing permitting/prohibiting setting element without the need for a housing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a housing process is used to form the writing permitting/prohibiting setting element, then the setting element can be formed, but the size of the semiconductor package is limited and manufacturing costs increase
Solution Approach 1:
The patent merges the housing structure and the setting element into a single integrated molding. The upper lid of the housing is formed with an insert unit that directly creates the setting element functionality, eliminating the need for separate housing and setting element components. This integration reduces both manufacturing steps and overall size.
Solution Approach 2:
The patent extracts the setting element formation process from the separate housing process. By forming the setting element directly within the housing molding through the insert unit, the complex multi-step housing process is simplified into a single integrated molding operation, reducing manufacturing complexity and cost.
2Ease of manufacture
If a housing process is used to form the writing permitting/prohibiting setting element, then the setting element can be formed, but the process becomes complicated
Solution Approach 1:
The housing and setting element are merged into a single molding operation. The insert unit is integrated into the upper lid molding, allowing both the housing structure and the setting element to be formed simultaneously in one process step, greatly simplifying manufacturing while ensuring reliable functionality.
Solution Approach 2:
The insert unit is prepared in advance as part of the molding structure, with the slot and insert geometry pre-designed to ensure proper setting element formation. This preliminary design ensures that the setting element functions reliably without requiring complex post-processing or assembly steps.
Data Source
AI summary
A memory card includes a substrate, at least one semiconductor chip attached to the substrate, a writing permitting/prohibiting setting element attached to the substrate, and a molding member formed on the substrate to cover the semiconductor chip.