Low-Temperature Diode Fabrication for Resistive Memory Arrays
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Solution Overview
Problem
Conventional diodes and resistive memory devices face challenges in manufacturing and operational efficiency, particularly when used in three-dimensional memory arrays, where high-temperature fabrication can alter or destroy existing device characteristics.
Innovation Solution
A diode structure comprising a first oxide layer and a second oxide layer in contact, with low-temperature fabrication processes to maintain existing device operational characteristics, and integration of these diodes with resistive memory devices in series, using metal oxides like NiOx and TiOx to form p-type and n-type semiconductors respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-temperature fabrication processes are used to manufacture conventional diodes and resistive memory devices, then manufacturing efficiency is improved, but existing device characteristics are altered or destroyed
Solution Approach 1:
The patent changes the temperature parameter of the fabrication process from high-temperature to low-temperature processing. This allows the diode and resistive memory device to be manufactured without altering or destroying existing device characteristics, resolving the contradiction between manufacturing efficiency and device reliability
Solution Approach 2:
The patent uses composite material structures including p-type semiconductor layers (such as nickel oxide NiOx), n-type semiconductor layers (such as titanium oxide TiOx), and oxide layers. These composite material combinations enable low-temperature fabrication while maintaining proper device functionality and characteristics
2Adaptability or versatility
If conventional diode structures are used in three-dimensional memory arrays, then device integration is achieved, but manufacturing complexity increases due to temperature constraints
Solution Approach 1:
By changing the fabrication temperature parameter to low-temperature processing, the patent simplifies the manufacturing process for integrating diodes into three-dimensional memory arrays, removing the need for complex high-temperature process control while maintaining integration capability
Solution Approach 2:
The patent introduces oxide layers as intermediary structures between the p-type and n-type semiconductor layers. These oxide layers facilitate the formation of diode structures at low temperatures, acting as mediators that enable integration without requiring complex high-temperature processing
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 low-temperature diode fabrication sequence enhances manufacturing and operational efficiency of resistive memory devices without altering existing device characteristics, ensuring reliable performance in memory arrays.
Implementation Method 1
a first layer comprising an oxide, and a second layer comprising an oxide in contact with the first layer
Data Source
AI summary
In an electronic device, a diode and a resistive memory device are connected in series. The diode may take a variety of forms, including oxide or silicon layers, and one of the layers of the diode may make up a layer of the resistive memory device which is in series with that diode.