Cross-linkable Primer Material for Semiconductor Surface Protection
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Solution Overview
Problem
Existing semiconductor fabrication techniques face challenges in surface preparation, including unwanted consumption of surface prep materials during subsequent processes, difficulty in achieving desired thickness, and insufficient gap filling, which can lead to damage of underlying layers and affect device yield and performance.
Innovation Solution
A primer material comprising a surface interaction enhancement component and a cross-linkable component is applied to the target surface, allowing for controlled thickness and gap filling, providing a stronger interaction with the surface and protection of underlying layers through a cross-linking process, which can be subsequently de-cross-linked for easy removal without damaging the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surface preparation materials are applied, then surface coverage is achieved, but the materials are unwantedly consumed during subsequent processes and fail to provide adequate protection
Solution Approach 1:
The surface preparation material is formulated as a composite containing multiple functional components: a polymer backbone providing structural integrity, crosslinkable groups forming a protective network, and surface interaction enhancement groups. This composite structure enables the material to resist consumption during subsequent processes while maintaining adhesion and protection functions.
Solution Approach 2:
The material undergoes crosslinking transformation where linear polymer chains form a three-dimensional network structure. This parameter change from linear to crosslinked configuration increases the material's resistance to consumption and removal, providing durable protection of underlying layers during fabrication processes.
2Manufacturing precision
If surface preparation materials are applied to ensure coverage, then surface protection is provided, but desired thickness control and gap filling are difficult to achieve
Solution Approach 1:
The polymer-based surface preparation material forms a flexible thin film that can conform to complex substrate geometries including gaps and trenches. The material's viscosity and flow properties enable it to fill gaps uniformly while maintaining controlled thickness through spin coating or dip coating processes.
Solution Approach 2:
The surface preparation material is applied in advance before subsequent fabrication steps, allowing it to fill gaps and establish uniform thickness coverage beforehand. This preliminary action ensures that underlying layers are protected and surface properties are optimized before critical processing steps.
3Strength
If surface preparation materials provide strong adhesion, then surface interaction is enhanced, but removal of the materials becomes difficult
Solution Approach 1:
The material's adhesion and removal properties are dynamically controlled through pH-responsive or redox-responsive mechanisms. Under fabrication process conditions, the material maintains strong adhesion via crosslinked networks. During removal, chemical treatment triggers degradation of the crosslinked structure, allowing easy elimination of the material without damaging the substrate.
Solution Approach 2:
The surface preparation material is designed as a temporary protective layer that fulfills its function during fabrication and then can be completely removed. The crosslinked structure provides protection during processing, and subsequent chemical treatment enables complete removal of the material, discarding it after its protective purpose is served.
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 primer material effectively enhances surface preparation by improving adhesion, protecting underlying layers, and facilitating controlled thickness and gap filling, thereby improving the reliability and yield of semiconductor devices.
Implementation Method 1
A cross-linking process is performed on the deposited primer material. The cross-linkable component self-cross-links in response to the cross-linking process to form a cross-linked primer material.
Implementation Method 2
A decomposing process is then performed on the semiconductor substrate. The decomposing process de-cross-links the cross-linked primer material, thereby eliminating the primer material from the semiconductor substrate without damaging a layer formed thereon.
Data Source
AI summary
Provided is a material composition and method for that includes providing a primer material including a surface interaction enhancement component, and a cross-linkable component. A cross-linking process is performed on the deposited primer material. The cross-linkable component self-cross-links in response to the cross-linking process to form a cross-linked primer material. The cross-lined primer material can protect an underlying layer while performing at least one process on the cross-linked primer material.