Memory Card Terminal Layout for Durable Electrical Connection
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Solution Overview
Problem
The configuration of interconnection terminals in miniaturized storage devices affects electrical characteristics and durability, limiting design flexibility in external devices.
Innovation Solution
A memory card with interconnection terminals aligned in a row and column direction on a substrate, where each terminal's first-axis length is no more than 1.2 times its second-axis length, and a non-volatile memory device is connected to these terminals, enhancing electrical connection and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interconnection terminals are arranged in conventional configurations, then electrical connection is established, but electrical characteristics and durability are compromised
Solution Approach 1:
The patent applies asymmetry by configuring interconnection terminals with different shapes and arrangements on opposite edges of the substrate. Specifically, first interconnection terminals have a first shape on a first edge, while second interconnection terminals have a second shape on a second edge, creating an asymmetric configuration that improves durability and electrical characteristics while preventing contradictory insertion
Solution Approach 2:
The patent utilizes dimensional changes by arranging interconnection terminals not only in different positions but also with varying orientations and shapes across multiple edges. The direction indicator and asymmetric terminal configurations create a multi-dimensional arrangement that enhances reliability without excessive complexity
2Reliability
If interconnection terminals are arranged to improve electrical characteristics, then durability is enhanced, but design flexibility of external devices is limited
Solution Approach 1:
The asymmetric terminal configuration with direction indicator improves electrical characteristics and durability while the standardized asymmetric pattern can be universally adopted, maintaining a balance between reliability improvement and design flexibility through consistent asymmetric design rules
3Reliability
If interconnection terminals are configured with conventional shapes and arrangements, then manufacturing is simplified, but electrical connection quality and durability are reduced
Solution Approach 1:
While the asymmetric terminal configuration improves electrical connection quality and durability, the patent maintains ease of manufacture by using standardized asymmetric patterns and shapes that can be consistently produced through conventional manufacturing processes, balancing reliability improvement with manufacturing simplicity
Data Source
AI summary
A memory card includes a plurality of interconnection terminals aligned in a row direction and a column direction on a substrate. Each of the plurality of interconnection terminals has a first-axis length equal to no more than 1.2 times that of a second-axis length thereof. A non-volatile memory device is disposed on the substrate. The non-volatile memory device is electrically connected to at least one interconnection terminal corresponding thereto from among the plurality of interconnection terminals.