Semiconductor Electrode Electric Field Distribution
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Solution Overview
Problem
Conventional semiconductor devices face reliability issues due to strong electric fields formed at electrode edges, which can lead to damage.
Innovation Solution
A semiconductor device design featuring a substrate with first and second semiconductor layers of different conductivity types, a third semiconductor layer between them, and electrodes with electric field distribution parts, including cavities or protrusions, to manage and distribute the electric field effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrode structure is used, then device simplicity is maintained, but strong electric field at electrode edges causes device damage and reduced reliability
Solution Approach 1:
The patent applies local quality by introducing electric field distribution parts (cavities or protrusions) only at specific locations (edge parts) of the electrode where strong electric fields occur, rather than modifying the entire electrode structure. This localized modification redistributes the electric field intensity at critical regions while maintaining the overall simplicity of the electrode design, thereby improving device reliability without significantly increasing device complexity.
2Reliability
If electric field distribution parts are added to electrode edges, then device reliability is improved, but electrode structure complexity increases
Solution Approach 1:
The patent segments the electrode into distinct functional regions: edge parts with electric field distribution parts (cavities or protrusions) and central parts with standard structure. This segmentation allows the electric field management function to be isolated to specific locations, improving reliability through targeted modification while keeping the majority of the electrode structure simple and easy to manufacture.
3Reliability
If cavities or protrusions are formed at electrode edges, then electric field is distributed effectively, but manufacturing process complexity increases
Solution Approach 1:
The patent incorporates the formation of cavities or protrusions as preliminary actions during the electrode fabrication process itself, rather than requiring separate post-processing steps. By integrating the electric field distribution structure formation into the existing electrode manufacturing workflow, the patent achieves effective electric field distribution while minimizing additional manufacturing process complexity.
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 design enhances the reliability of semiconductor devices by distributing a locally large electric field, preventing damage and improving performance.
Implementation Method 1
at least one of a first end part among both end parts of the first electrode, which is close to the second electrode, and a second end part among both end parts of the second electrode may have an electric field distribution part
Data Source
AI summary
A semiconductor device includes a substrate; first and second semiconductor layers arranged on the substrate and having different conductive types; a third semiconductor layer arranged between the first semiconductor layer and the second semiconductor layer; a first electrode arranged on the first semiconductor layer so as to be electrically connected to the first semiconductor layer; a second electrode arranged on the second semiconductor layer so as to be electrically connected to the second semiconductor layer; and a first insulating layer arranged, between the first electrode and the second electrode, on the exposed first, second and third semiconductor layers, wherein a first end part, close to the second electrode, among both end parts of the first electrode, and/or a second end part, which is both end parts of the second electrode, has an electric field dispersion part.