Process Integration Engineer
Engineers who link many process steps into a manufacturing flow that makes the device work as intended overall. They play a central role when new technology generations and products are introduced.
What the job involves
Chip manufacturing is a long sequence that repeats deposition, lithography, etching, ion implantation and other steps many times. Process integration engineers design this whole flow and make sure that when the individual steps are combined, the device reaches its target characteristics and yield. Changing the conditions of one step affects the steps around it and the electrical results, so they look at the whole and choose the best combination. When a new technology generation or a new product is introduced, they set the step sequence and targets, evaluate the prototype results and bring the process to the point where it can move into volume production.
Who they work with and what they handle
It is a role that often sits between the process engineers for each step, device engineers who shape the characteristics, yield and quality engineers and the design teams, acting as the coordinator. What they handle: the process flow describing the order and conditions of the steps, test structures built on the wafer and their electrical measurement results, cross-section images and yield data. They may also contribute to the design rules and the PDK (process design kit) given to designers. After volume production starts, they lead the work on yield and characteristic problems that span several steps.
Knowledge and skills
Rather than deep expertise in a single step, the role calls for a broad understanding of the principles of every step and how they connect. A basic requirement is being able to picture the cross-section from STI (shallow trench isolation) through the transistor and silicide up to the wiring. You also need to infer which step is the likely cause from electrical measurement results. Because the job means pulling together the views of many teams and making decisions, the ability to explain logically with evidence and set priorities is important too.
Where to start
Start with the “The fabrication process” course and work through the front-end fields in order. “Lithography”, “Etching”, “Deposition (CVD and PVD)”, “Ion implantation” and “Interconnect processes” are especially essential for building a flow. How the process affects device characteristics is covered in the “MOSFET” and “Advanced transistors (FinFET and GAA)” fields, or in the “Understanding devices” course. Finally, the “Yield and quality control” field covers how to think about evaluation on the way to volume production.
Fields to learn
Advanced transistors (FinFET and GAA) 54 questions MOSFET 50 questions Lithography 52 questions Etching 50 questions Deposition (CVD and PVD) 50 questions Ion implantation 50 questions Interconnect processes 51 questions Yield and quality control 50 questions
10 starter questions for this role
Ten basic questions from the fields this role uses
Recommended courses
The fabrication processFollow the front-end process in order: wafers, cleanrooms, oxidation, lithography, etching, deposition, interconnects, metrology and yield.Understanding devicesLearn how devices work, from physics fundamentals through transistors and advanced transistors to power, compound semiconductors and sensors.
Key terms
STI (shallow trench isolation) High-k / metal gate Gate-last (replacement metal gate) Silicide MOL (middle of line) Dual damascene Process window Four-point probe method PDK (process design kit) DTCO (design-technology co-optimization) Systematic defect Yield
FAQ
Can I become a process integration engineer without a technical background or industry experience?
The role draws on knowledge of both the whole process and devices, so in general a science or engineering background is usually expected. Some people take it on after working as process or device engineers, while others are assigned to it as new graduates; the approach varies by company. Either way, the starting point is a working understanding of each process step and the transistor structure.
How is it different from a process engineer?
A process engineer is responsible for the conditions and results of a specific step and goes deep into that step. A process integration engineer is responsible for the combination of steps as a whole and for the final device characteristics and yield. For example, the integration engineer may set the target for a dimension and the process engineer develops the recipe that achieves it, but the boundary varies by company.
Do I need any license or certification?
In general, no specific license or certification is required. Broad knowledge of process and devices, the ability to infer causes from data and the ability to coordinate many teams count most. Getting exposure to experiments or research involving semiconductor processing or devices as a student makes the job easier to picture.