Semiconductor Wafer Micro Message Encoding
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Solution Overview
Problem
The high cost of manufacturing facilities for producing silicon wafers with atomically sized transistors has led to economic challenges for startup companies, necessitating shared fabrication costs and innovative methods to create durable and cost-effective semiconductor chips.
Innovation Solution
The semiconductor chip is partitioned into rectangles with unique micro messages and conductive traces, where each micro message is formed from single or logical ORed conductive traces, and all rectangles have the same dimensions, with conductive traces encapsulated in oxide to prevent electrical connection between them, allowing for unique and durable micro message encoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transistor size is reduced to atomically sized dimensions, then areal density of transistors doubles every 2 years, but manufacturing cost rises to astronomical proportions
Solution Approach 1:
Multiple startup companies' chip designs are merged onto a single semiconductor wafer, allowing shared fabrication costs. The wafer is divided into multiple regions, each containing different companies' circuit designs, enabling cost distribution across multiple customers while maintaining high transistor density.
Solution Approach 2:
The semiconductor wafer serves multiple functions simultaneously: it acts as a fabrication platform for multiple companies, a cost-sharing mechanism, and a production line for high-density transistors. This multi-functionality allows the expensive fabrication process to benefit from economies of scale.
2Ease of manufacture
If multiple companies share fabrication costs on a single wafer, then economic competitiveness of startup companies improves, but device complexity increases due to multiple designs on one wafer
Solution Approach 1:
The semiconductor wafer is segmented into multiple distinct regions or areas, with each region dedicated to a specific company's chip design. This segmentation allows independent design layouts within each region while maintaining overall wafer-level integration and cost sharing.
Solution Approach 2:
An intermediary company collects chip designs from multiple startup companies and coordinates their placement on a single wafer. This intermediary manages the complexity of multiple designs by handling layout optimization, routing coordination, and fabrication process management.
3Ease of manufacture
If chip designs are placed on a single wafer to share costs, then manufacturing cost per company decreases, but loss of information increases due to potential electrical connection issues between adjacent designs
Solution Approach 1:
Conductive traces that could potentially create unwanted electrical connections between adjacent company designs are extracted or removed from the shared wafer structure. Each company's design region is isolated with appropriate spacing or insulating structures to prevent cross-contamination of electrical signals.
Solution Approach 2:
Different regions of the wafer have different electrical isolation characteristics tailored to each company's design requirements. Adjacent regions use localized isolation techniques such as deep trenches, thick oxide layers, or inert gas fills to prevent electrical interaction while maintaining cost efficiency.
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 enables the creation of durable and cost-effective semiconductor chips with unique micro messages that can be economically produced, addressing the economic challenges faced by startup companies and allowing for the encoding of messages in a compact and efficient manner.
Implementation Method 1
conductive traces encapsulated in oxide to prevent electrical connection between them
Data Source
AI summary
Silicon processing technology is used to generate an array of micro messages. These micro messages can contain at least one stick figure, or at least one word, or at least one stick figure and at least one word, or at least one stick figure and a grid mark, or at least one word and a grid mark, or at least one stick figure and at least one word and a grid mark. Grid marks are associated with the micro message and used to identify the X and Y Cartesian coordinates of the message. A plurality of conductive traces is used to form the micro messages. Each micro message can be completely encapsulated in silicon dioxide or at least one conductive trace can be connected to one of the tubs.