Microchips and Highly Sensitive Sensors | Mega Factories: Bosch | Free Documentary

Industrial Revolution and Industry 4.0

The global economy is experiencing significant changes akin to the Industrial Revolution, emphasizing the necessity for modern factories to be flexible, digitized, and interconnected in Industry 4.0.

Modern Semiconductor Factory in Reutlingen

• Reutlingen houses a cutting-edge semiconductor factory known for its meticulous care and high automation levels.

• The factory produces around one billion micromechanical sensors annually for use in automotive and consumer electronics.

• Klaus Meder highlights the role of semiconductors and sensors in automotive and consumer sectors, with over 10 billion sensors produced to date.

Semiconductor Manufacturing Process

• Silicon, a semiconductor base material, is crucial for chip production due to its unique properties.

• High-purity silicon ingots are used to create silicon wafers essential for chip manufacturing.

• MEMS (Micro-Electro-Mechanical Sensors) chips are produced using silicon wafers with intricate circuits encapsulating intelligence.

Semiconductor Scale and Production Control

Understanding semiconductor scale's impact on functionality within components and the critical role of production control in ensuring error-free processes.

Semiconductor Scale Importance

• The semiconductor scale determines component functionality by enabling more functions within a confined space through narrow tracks and layers.

Production Control in Semiconductor Manufacturing

• Over 3,500 employees work across three shifts at Reutlingen's facility, utilizing machines to process silicon wafers efficiently.

• Computer-aided production control oversees the automated production of over four million individual parts daily.

Wafer Processing and Automation

Delving into wafer processing intricacies, automation's significance in guiding wafer movement through thousands of precise processes.

Wafer Movement and Automation

• Wafers undergo repetitive processing steps over months akin to building floors in a house to optimize chip space utilization.

Importance of Repetitive Processes

Production Process in a Clean Room Environment

The transcript delves into the meticulous procedures followed by Bosch employees in a clean room environment to produce houses on a micro scale.

Clean Room Procedures

• Employees must follow strict procedures before entering the clean room, including wearing specialized cleanroom clothing and going through multiple cleanliness checks.

• The process involves employees covering up completely with hoods and overalls made of special materials suitable for clean room use to maintain cleanliness.

• Detailed planning is evident in the wafer fab, where every installation and step is precisely organized to ensure cleanliness and efficiency.

Wafer Production Process

• The Reitlingen factory initiates the construction process for MEMS devices using raw wafers ordered and processed meticulously.

• Each wafer receives an ID chip before becoming chips, aiding in tracking their progress throughout production.

• Production times for sensors or chips can vary from 14 days to three months, akin to building a house with different design considerations.

Semiconductor Manufacturing Requirements

This section highlights the stringent requirements for semiconductor manufacturing facilities, emphasizing the need for specialized environments and routines.

Facility Regulations

• Semiconductor manufacturing demands specific regulations not only within the clean room but also concerning building entry protocols.

• Employees must adhere to purity classes when transitioning from regular shoes to indoor shoes, jogging clothes, and finally cleanroom attire before entering the production area.

Building Structure

• The facility's structure includes four stories accommodating ventilation systems, clean room technology, production facilities, and media supply areas.

Visible Joints and Building Construction

The speaker discusses the visible joint in the building, emphasizing its significance in separating different sections and levels within the structure.

Visible Joint Description

• The joint is visible throughout the building, separating it from other areas.

• It runs through all levels and separates two buildings.

• Filled with silicon to bridge a gap of about five centimeters.

• Bast fiber used for cleanliness compatibility in clean room areas.

• Metal plates allow free movement for decoupling purposes.

Building Construction Stages and Airflow System

The focus shifts to observing construction stages within the building, particularly highlighting the airflow system's components.

Observing Construction Stages

• Walking past a gallery showcasing construction progress at various levels.

• Circles in the floor indicate tubes for future airflow distribution.

• Clean room ceiling supported by columns for efficient airflow management.

Precision Manufacturing Challenges

Delving into the precision required for semiconductor manufacturing, detailing challenges faced by production planning teams.

Precision Manufacturing Challenges

• Semiconductor production demands high precision reflected in elaborate building technology.

• Thomas Ruster oversees wafer front end operations, understanding production challenges.

• Digital simulation precedes actual manufacturing processes to ensure efficiency and avoid duplication.

Automation and Complexity Management

Exploring automation's role in managing complex semiconductor production processes efficiently.

Automation and Complexity Management

• Each wafer contains thousands of chips, leading to up to 70,000 wafers in production simultaneously.

• Automation crucial due to human limitations in comprehending such complexity.

• Intelligent algorithms determine material flow and next production steps accurately.

Efficient Production Through Automation

Highlighting how automation enhances efficiency in semiconductor production processes.

Efficient Production Strategies

• Automation key in unloading/loading wafers and transporting batches between stations.

• Real-time decision-making ensures smooth operations without constant human intervention.

Processing Automation and Robotics in Industry 4.0

The discussion delves into the automation levels in production processes, the integration of robots in Industry 4.0, and the coordination between humans and robots.

Automation Levels and Robot Coordination

• Production processes involve minimal human touch due to high automation levels using automatic equipment.

• Robots in Industry 4.0 operate autonomously, coordinating actions like traffic at a crossroads.

• Human-robot interaction prioritizes human safety with humans always having priority in certain areas.

Robot Naming and Differentiation

This section explores the naming of robots for differentiation and human interaction purposes within the production environment.

Robot Naming Significance

• Four generations of robots include stationary ones for optimal space utilization and efficient movement.

• Robots named after Robert Bosch's children to enhance human-robot interaction and belonging to the company's legacy.

Semiconductor Manufacturing Process with Silicon Carbide

Focuses on semiconductor manufacturing advancements using silicon carbide for improved electric mobility products.

Silicon Carbide Application

• Utilization of silicon carbide revolutionizes electromobility by enhancing range, reducing losses, and energy requirements.

• Implanting ions into semiconductor material using an ion implanter is crucial for semiconductor manufacturing complexity.

Ion Implantation Process in Semiconductor Manufacturing

Details the intricate process of ion implantation in semiconductor manufacturing for altering electrical conductivity.

Ion Implantation Process

• Ion implanters accelerate ions to high energies before shooting them into semiconductor materials for specific conductivity changes.

Manufacturing Process and Quality Control

The transcript delves into the continuous manufacturing process at a specific location, emphasizing the importance of teamwork, quality control measures, and the evolution of training practices over time.

Continuous Manufacturing Process

• The site operates around the clock, 24/7, with a continuous manufacturing program.

• Coordination among departments is crucial to prevent backlogs and ensure smooth operations.

• Teamwork is highlighted as a core competence for successful production across different shifts.

Emphasis on Quality Control

• Quality is paramount in production, with staff adhering to high standards daily.

• Rigorous testing processes are in place to maintain quality standards for MEMS sensors.

Testing Procedures and Equipment

• A significant number of employees are dedicated to testing wafers for functionality.

• Strict protocols are followed during wafer testing to avoid contamination or damage.

Visual Inspection and Defect Detection

This segment focuses on visual inspection processes, highlighting the role of automated equipment in detecting defects post-electromagnetic measurement.

Visual Inspection Process

• Visual inspection complements electromagnetic measurements to identify potential defects.

• Automated systems aid in meticulously scanning wafers for anomalies not visible to the naked eye.

Anomaly Detection and Rejection Criteria

• Chips undergo thorough scrutiny post-measurement to ensure top-quality delivery.

Intelligent Action by Algorithms

In this section, the speaker discusses the use of algorithms in products containing artificial intelligence and those produced with artificial intelligence. The process involves teaching systems to improve using algorithms, comparing good and bad parts for visual inspections.

Intelligent Use of Artificial Intelligence

• Programs can be taught to differentiate between good and bad parts, enabling learning processes useful in various applications like autonomous driving.

• Artificial intelligence is utilized to relieve employees from monotonous tasks like anomaly detection in images, requiring human training in complex algorithms.

Strategic Warehouse Management

This part focuses on the strategic warehouse management of finished wafers, emphasizing the importance of timely processing and delivery to meet customer demands efficiently.

Efficient Wafer Storage

• The die bank serves as a strategic warehouse ensuring that processed wafers are readily available for assembly and final testing upon customer order placement.

• Approximately 6,000 batches are systematically logged in the die bank, facilitating quick retrieval without manual searching.

Long-Term Storage Solutions

• Wafers can be stored for up to two weeks on average but may extend up to 10 years under special conditions for obsolete parts.

• Nitrogen storage in clean rooms prevents corrosion or damage to wafer surfaces, necessitating stringent control systems for humidity levels.

Safety Measures and Monitoring

• A specialized control system regulates nitrogen levels based on humidity values to maintain wafer surface integrity while optimizing nitrogen usage.