Memory Chip Preheating Control for Low-Temperature Write Stability

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Solution Overview

Problem

Existing memory technologies experience prolonged write times and reduced data stability at low temperatures due to increased resistances in bit lines, word lines, and metal connections, which affect the performance of semiconductor storage devices like DRAM.

Innovation Solution

A semiconductor structure comprising a storage chip, a temperature detection unit, and a control chip that detects temperature and heats the storage chip to a specified threshold before initiation, ensuring optimal operating conditions and reducing write time while improving stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the storage chip operates at low temperature, then energy consumption is reduced, but write time is prolonged and data stability deteriorates

Engineering Contradiction:
Improveenergy consumptionVSAvoidwrite time
Core Design Contradiction:
Loss of energyVSLoss of time

Solution Approach 1:

The control chip performs preliminary heating of the storage chip before data writing operations when the temperature is detected to be below the threshold. This preliminary action ensures that the storage chip reaches optimal operating temperature before actual write operations, thereby reducing write time and improving data stability while maintaining energy efficiency during normal operation.

Inventive Principle:
Principle #10Preliminary action

2Loss of energy

If the storage chip operates at low temperature, then energy consumption is reduced, but data stability deteriorates

Engineering Contradiction:
Improveenergy consumptionVSAvoiddata stability
Core Design Contradiction:
Loss of energyVSReliability

Solution Approach 1:

The system performs preliminary heating of the storage chip before data writing operations when temperature is below the threshold. This ensures optimal operating conditions are established before data operations, improving data stability without compromising energy efficiency during normal low-temperature operation.

Inventive Principle:
Principle #10Preliminary action

3Temperature

If the control chip heats the storage chip continuously, then temperature is maintained at optimal level, but energy consumption increases

Engineering Contradiction:
Improvestorage chip temperatureVSAvoidheating energy consumption
Core Design Contradiction:
TemperatureVSLoss of energy

Solution Approach 1:

The temperature detection unit continuously monitors the storage chip temperature and provides feedback to the control chip. The control chip adjusts heating operations based on this feedback, activating heating only when temperature falls below the threshold and stopping when the threshold is reached. This feedback mechanism maintains optimal temperature while minimizing energy consumption by avoiding continuous heating.

Inventive Principle:
Principle #23Feedback

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 reduces write time and enhances data stability in semiconductor memory devices by maintaining optimal resistance levels at low temperatures, thereby improving overall memory performance.

Implementation Method 1

The control chip may be configured to, before the storage chip initiates, heat the storage chip

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS11862223B2Semiconductor structure and preheating method thereof
Publication Date: 2024.01.02 CHANGXIN MEMORY TECH INC
  • US11862223B2 patent drawing
  • US11862223B2 patent drawing
  • US11862223B2 patent drawing

AI summary

A semiconductor structure and a preheating method thereof are provided. The semiconductor structure includes: a storage chip; a temperature detection unit configured to detect a temperature of the storage chip before the storage chip initiates; and a control chip configured to: before the storage chip initiates, heat the storage chip and determine whether the temperature detected by the temperature detection unit reaches a specified threshold; and if the temperature reaches the specified threshold, control the storage chip to initiate. When the semiconductor structure provided in the present invention works at a low temperature, the storage chip may be heated to the specified threshold, thereby preventing an increase of the resistances on the bit line, the word line, and the metal connection line in the storage chip, and improving the performance of read/write operations of the memory.