Semiconductor storage device and circuit board unit

The semiconductor storage device addresses connectivity and inspection challenges by using a split circuit board structure with optimized materials and connections, ensuring reliable and cost-effective signal transmission through visual and electrical testing.

DE102025131384A1Pending Publication Date: 2026-06-18KIOXIA CORP

Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
KIOXIA CORP
Filing Date
2025-08-07
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing semiconductor storage devices face challenges in efficiently connecting and testing the electrical integrity of multiple circuit boards while maintaining cost-effectiveness and signal transmission efficiency.

Method used

The semiconductor storage device employs a split circuit board structure with different materials for high-speed and non-high-speed signal transmission, utilizing a solder joint connection between conductive sections of the boards, and includes a visual and electrical inspection method for ensuring proper connectivity.

Benefits of technology

This approach enhances the reliability and efficiency of signal transmission while reducing costs by optimizing the circuit board design and providing effective inspection methods.

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Abstract

A semiconductor storage device according to one embodiment comprises a first circuit board and a second circuit board. The first circuit board includes a first section, a second section that is thinner than the first section, and a plurality of first conductive sections on the second section. The second circuit board includes a plurality of second conductive sections. The plurality of second conductive sections overlaps the plurality of first conductive sections when viewed from a first direction, which is a thickness direction of the first circuit board. The plurality of second conductive sections are connected to the plurality of first conductive sections by solder in a one-to-one correspondence.
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