Semiconductor Via Structure for Reference Voltage Drop Reduction
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Solution Overview
Problem
Signal paths between semiconductor elements and power rails in semiconductor devices experience significant voltage drops due to varying resistances, which affect the integrity and efficiency of reference voltage signals.
Innovation Solution
The semiconductor device incorporates a via structure with a width approximately twice that of the epitaxial structure, allowing direct transmission of reference voltage signals from conductive layers, reducing resistance and maintaining voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional via structures with standard width are used, then device complexity is reduced, but voltage drops increase due to higher resistance
Solution Approach 1:
The patent changes the physical parameter of the via structure by increasing its width to approximately twice that of the epitaxial structure. This parameter change directly reduces the resistance of the via structure, thereby minimizing voltage drops and improving reference voltage signal integrity without requiring complex additional components or architectural changes
2Reliability
If via structure width is increased to reduce resistance, then voltage drops are minimized, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a quantitative parameter range for the via structure width (approximately twice the epitaxial structure width), providing clear manufacturing guidelines. This parameter specification balances the need for reduced resistance with practical manufacturing capabilities, ensuring that the width increase is sufficient to minimize voltage drops while remaining controllable within standard manufacturing tolerances
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 design minimizes resistance and maintains reference voltage signal integrity, enhancing the performance and efficiency of semiconductor operations.
Implementation Method 1
via structure with a width approximately twice that of the epitaxial structure, allowing direct transmission of reference voltage signals from conductive layers, reducing resistance
Data Source
AI summary
A semiconductor device includes first and second conductive layers, a first epitaxial structure and a first via structure. The first conductive layer extends along a first direction, and provides a first reference voltage signal. The second conductive layer extends along the first direction, and is separated from the first conductive layer along a second direction. The first epitaxial structure is disposed between the first conductive layer and the second conductive layer, and has a first width along the first direction. The first via structure is disposed between the first conductive layer and the second conductive layer, and transmits the first reference voltage signal from the first conductive layer through the second conductive layer to the first epitaxial structure. The first via structure has a second width along the first direction. The second width is approximately equal to or larger than twice of the first width.