Semiconductor Storage Device Thermal Plate Heat Dissipation

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Solution Overview

Problem

Semiconductor storage devices face challenges in efficiently dissipating heat generated during high-speed data processing operations, particularly from components like memory ICs and controllers, leading to increased temperatures and potential malfunctions due to inadequate heat release through existing wiring.

Innovation Solution

Incorporation of plate-shaped members with thermal and electrical conductivity, such as metal components, which are strategically positioned to connect with the substrate and holder, providing alternative heat dissipation paths and electromagnetic shielding, thereby facilitating efficient heat release and preventing temperature accumulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high load is applied to memory ICs and controller ICs to increase processing speed, then productivity is improved, but temperature increases leading to potential malfunctions

Engineering Contradiction:
Improvedata processing speedVSAvoidcomponent temperature
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

A plate-shaped member with thermal conductivity is introduced as an intermediary heat dissipation component between the substrate and the case. This plate-shaped member provides a dedicated thermal pathway that mediates heat transfer from the memory IC and controller IC to the case, resolving the contradiction by enabling high-speed operation while controlling temperature through the intermediary thermal conduction path.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of energy

If existing wiring is used for heat dissipation, then device complexity is minimized, but heat release efficiency is insufficient

Engineering Contradiction:
Improveheat release efficiencyVSAvoidthermal management structure
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The plate-shaped member serves multiple functions simultaneously: it acts as a heat dissipation path, provides electromagnetic shielding, and structurally connects the substrate to the case. By making one component multi-functional, the invention improves heat release efficiency without proportionally increasing device complexity, as the plate-shaped member integrates several protective and thermal management roles.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Temperature

If plate-shaped members are added for heat dissipation, then temperature control is improved, but device complexity increases

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidcomponent structure
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The invention merges the heat dissipation function with electromagnetic shielding and structural support functions into a single plate-shaped member. By combining these functions that would otherwise require separate components, the thermal management effectiveness is improved while the increase in device complexity is minimized through functional integration.

Inventive Principle:
Principle #5Merging (Combining)

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 solution effectively dissipates heat from high-speed operating components, reducing the risk of malfunctions and improving the overall performance and reliability of semiconductor storage devices by providing enhanced thermal management and electromagnetic shielding.

Implementation Method 1

the first plate-shaped member is connected to the holder at a first end, is connected to the first principal surface on a second end portion side of the substrate at a second end, and has thermal conductivity

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

Incorporation of plate-shaped members with thermal and electrical conductivity, such as metal components, which are strategically positioned to connect with the substrate and holder, providing alternative heat dissipation paths and electromagnetic shielding

Methodology Applied
Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS10104806B2Semiconductor storage device
Publication Date: 2018.10.16 KIOXIA CORP
  • US10104806B2 patent drawing
  • US10104806B2 patent drawing
  • US10104806B2 patent drawing

AI summary

A semiconductor storage device includes a substrate having a wiring, a first semiconductor memory, a terminal portion, a holder surrounding the terminal portion, a case, and a first plate-shaped member. The first semiconductor memory is disposed on a first principal surface of the substrate and is connected to the wiring. The terminal portion is connected to the substrate at a first end portion of the substrate and has a terminal connected to the wiring. The case houses part of the holder, the substrate, and the first semiconductor memory. Between the first principal surface and a first wall portion of the case facing the first principal surface, the first plate-shaped member is disposed. The first plate-shaped member is connected to the holder and the first principal surface on a second end portion side of the substrate, and has thermal conductivity.