Semiconductor Void Structures for Precise Coolant Channel Formation
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Solution Overview
Problem
Current semiconductor device fabrication faces challenges in accurately forming and positioning voids within semiconductor substrates, which are crucial for achieving desired device performance and integration, especially as devices become smaller and more densely packed.
Innovation Solution
The method involves forming a semiconductor substrate with specific layers and etching techniques to create projections and then selectively growing materials to bridge across these projections, forming covered voids that can be filled or used for various purposes, such as forming conductive lines or transistor structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If devices are made smaller and positioned closer to one another, then device integration and density are improved, but manufacturing precision and void positioning accuracy deteriorate
Solution Approach 1:
The patent performs preliminary actions by forming mandrels and etching trenches before creating the final void structures. This staged approach allows precise control over void positioning and dimensions, addressing the manufacturing precision challenges that arise when devices are made smaller and more densely packed.
Solution Approach 2:
The patent introduces intermediary structures (mandrels, trenches, and bridging materials) to achieve the desired void configurations. These intermediary elements serve as mediators that enable precise void formation and positioning, resolving the contradiction between high device integration and maintaining manufacturing precision in sub-65nm processes.
2Reliability
If voids are formed to achieve desired device performance, then device performance is improved, but device complexity increases
Solution Approach 1:
The patent segments the void formation process into distinct stages: mandrel formation, trench etching, bridging material deposition, and void creation. This segmentation allows each step to be optimized independently, improving device performance while managing fabrication complexity through systematic process breakdown.
Solution Approach 2:
The patent creates multi-functional structures where the same fabrication steps serve multiple purposes. For example, the bridging material serves both as a structural element and as a precursor to the final void, reducing overall process complexity while achieving desired device performance characteristics.
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 allows for precise control over void formation, enhancing device performance and integration while enabling the creation of complex structures like field effect transistors and semiconductor-on-insulator substrates, improving the fabrication of micro-structures for applications in memory, logic circuits, and analytical sciences.
Implementation Method 1
A bridging material is selectively grown from the first and third materials effective to bridge across the second material and form a covered void within the opening
Data Source
AI summary
Some embodiments include methods of forming voids within semiconductor constructions. In some embodiments the voids may be utilized as microstructures for distributing coolant, for guiding electromagnetic radiation, or for separation and/or characterization of materials. Some embodiments include constructions having micro-structures therein which correspond to voids, conduits, insulative structures, semiconductor structures or conductive structures.