Semiconductor Edge Passivation Layer for Oxidation Resistance
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Solution Overview
Problem
Existing semiconductor components face challenges in maintaining long-term stability due to changes in passivation layer properties caused by material ambient influences, leading to potential electrical breakdowns and oxidation issues.
Innovation Solution
A semiconductor component arrangement with a passivation layer region formed using a chemically inert covering layer and an oxide layer to protect against oxidation, combined with a silicon-doped amorphous carbon layer or DLC layer, which is resistant to etching and corrosion, and optionally supplemented with a silicon nitride layer for enhanced moisture blocking and redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a passivation layer region is formed in the edge region of the semiconductor material region, then electrical breakdown prevention is improved, but the passivation properties deteriorate due to material ambient influences and oxidation
Solution Approach 1:
The patent applies composite materials by combining multiple passivation layers with different properties: a first passivation layer (e.g., silicon oxide) providing good electrical insulation and breakdown prevention, and a second passivation layer (e.g., silicon nitride) providing superior chemical inertness and oxidation resistance. This composite structure resolves the contradiction by leveraging the strengths of each material to achieve both electrical reliability and compositional stability.
Solution Approach 2:
The patent creates a chemically inert environment for the passivation layer by using materials with high resistance to material ambient influences. The second passivation layer, being chemically inert, protects the first passivation layer from oxidation and chemical degradation, thereby maintaining passivation properties under various ambient conditions while preserving electrical breakdown prevention capabilities.
2Stability of the object's composition
If a covering layer resistant to etching and chemically inert is used, then passivation property stability is improved, but device complexity increases
Solution Approach 1:
The patent optimizes the parameters of the passivation layer structure by carefully controlling the thickness of each layer. The first passivation layer has a thickness of 50-200 nm for adequate electrical insulation, while the second passivation layer has a thickness of 20-100 nm for sufficient chemical protection. These parameter optimizations ensure that the multi-layer structure provides enhanced stability without excessive complexity.
3Duration of action of stationary object
If an oxide layer region is provided for oxidation protection, then long-term stability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements preliminary action by forming the oxide layer region before subsequent processing steps. The oxide layer is grown or deposited on the semiconductor material region prior to forming the passivation layers, ensuring that oxidation protection is established in advance. This preliminary formation of the oxide layer simplifies subsequent manufacturing steps and reduces precision requirements for later processes.
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 provides robust and electrochemically resistant surface passivation, ensuring long-term stability and preventing premature breakdowns by shielding extraneous charges and maintaining effective blocking stability under various operating conditions.
Implementation Method 1
an oxide layer region is provided as a protection against oxidation on the surface region of the semiconductor material region in the edge region
Implementation Method 2
a silicon-doped amorphous carbon layer or DLC layer, which is resistant to etching and corrosion
Implementation Method 3
the passivation layer region serves for realizing a desired field distribution at the edge of the semiconductor component arrangement, in order e.g., to prevent premature electrical breakdowns
Data Source
AI summary
An integrated circuit having a semiconductor component arrangement and production method is provided. The integrated circuit includes a semiconductor material region having a surface region and being laterally subdivided into a central region and into an edge region. The integrated circuit includes a passivation layer region, an oxide layer, and a VLD zone. The passivation layer region is formed on the surface region in the edge region and is configured to realize a field distribution at the edge of the semiconductor component arrangement. The oxide layer region is provided as a protection against oxidation on and in direct contact with the surface region of the semiconductor material region in the edge region. The oxide layer region or a part of the oxide layer region is formed in direct contact with a channel stopper region formed in the edge region.