Dielectric Curing via Screening Atom Injection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge lies in effectively curing dielectric layers with small thickness, narrow width, or complex shapes in semiconductor devices, as existing methods struggle to achieve the required dielectric characteristics for high integration density and reliability.
Innovation Solution
A method involving the formation of a first metal-containing layer on the dielectric layer, followed by creating a curing atom screening region through the injection of screening atoms, and then injecting curing atoms into the layer at specific temperatures to improve dielectric characteristics, while also removing defect-inducing atoms and forming a second metal-containing layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional curing methods are used on thin dielectric layers, then the curing process is simple, but the dielectric characteristics are insufficient
Solution Approach 1:
The curing process is segmented into multiple stages: forming a metal-containing layer, injecting screening atoms to create a screening region, injecting curing atoms, and heat treatment. This segmentation allows precise control of curing atoms' distribution and activation, ensuring proper dielectric characteristics in thin layers while managing process complexity through systematic step-by-step procedures.
Solution Approach 2:
Before curing the dielectric layer, a metal-containing layer is formed and screening atoms are injected to create a screening region. This preliminary action prevents excessive curing atom penetration and ensures uniform curing distribution, which is critical for thin dielectric layers where direct curing would cause non-uniform results.
2Volume of moving object
If the dielectric layer thickness is reduced for high integration density, then device size is reduced, but curing uniformity deteriorates
Solution Approach 1:
A metal-containing layer acts as an intermediary between the curing atom source and the thin dielectric layer. This intermediary layer with a screening region controls the flux of curing atoms, preventing direct and excessive penetration into the thin dielectric layer, thereby ensuring uniform curing distribution and proper dielectric characteristics in miniaturized devices.
Solution Approach 2:
The invention changes physical parameters including forming a metal-containing layer with specific thickness, injecting screening atoms to create a screening region with controlled concentration, and performing heat treatment at specific temperatures. These parameter changes enable precise control of curing atom distribution, maintaining curing uniformity even when the dielectric layer thickness is reduced for high integration density.
3Reliability
If more curing atoms are injected to improve dielectric characteristics, then dielectric properties improve, but defect-inducing atoms increase
Solution Approach 1:
The screening region is formed with non-uniform distribution of screening atoms, creating different local qualities within the metal-containing layer. The screening region concentration varies to optimize curing atom blocking in specific areas, allowing sufficient curing atoms to reach the dielectric layer for proper characteristics while preventing excessive penetration that would cause defect-inducing atoms.
Solution Approach 2:
The screening region acts as a feedback mechanism by dynamically controlling the flow of curing atoms into the dielectric layer. The screening atoms' distribution and concentration provide negative feedback to regulate curing atom penetration depth, ensuring that the dielectric layer receives the exact amount of curing atoms needed for proper characteristics without receiving excess that would create defect-inducing atoms.
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
This approach enhances the reliability and characteristics of semiconductor devices by precisely controlling the amount of curing atoms injected, improving the dielectric layer's properties and reducing defects, thereby maintaining high integration density and reliability.
Implementation Method 1
forming a curing atom screening region in an upper portion of the first metal-containing layer by injecting screening atoms onto an upper surface of the first metal-containing layer
Implementation Method 2
injecting curing atoms into the first metal-containing layer through the upper surface of the first metal-containing layer; and flowing the curing atoms into the dielectric layer in an atmosphere at a first temperature
Implementation Method 3
moving defect-inducing atoms existing in the dielectric layer and/or on a surface of the dielectric layer to the first metal-containing layer in an atmosphere at a second temperature, wherein the second temperature is greater than the first temperature
Data Source
AI summary
A method of curing a dielectric layer, such as a dielectric layer that has a relatively small thickness and/or a narrow width or a complicated shape, is provided. The method of curing a dielectric layer for the manufacture of a semiconductor device includes providing the dielectric layer, wherein the dielectric layer is on a semiconductor layer; forming a first metal-containing layer on the dielectric layer; forming a curing atom screening region in an upper portion of the first metal-containing layer by injecting screening atoms onto an upper surface of the first metal-containing layer; injecting curing atoms into the first metal-containing layer through the upper surface of the first metal-containing layer; and flowing the curing atoms into the dielectric layer in an atmosphere at a first temperature.