Electronics Manufacturing – M528
Design of electronic products
Design is a process.
- Creating
- Reflecting
- Changing
Design is a set of specifications for manufacturing.
- Predictable
- Accurate
- Repeatable
- Flexible
- Maintainable
- Extensible
Fabrication complexity increase importance of product design.
Semiconductor complexity continues to increase.
- Design errors
- Process steps
- Lithography resolution
- Difficulty of yield forecasting
- Lock in relationships to fabrication facility
Complexity of electronic devices continues to increase.
- Use of embedded electronics
- Importance of device user interfaces
- Importance of life cycle design approaches
- Evolution of electronics supply chain
Image source: International Roadmap for Semiconductors. ITRS press conference, Dec 2004, 25.
How many designs are available?
Where do designs come from?
Sources of new designs:
- New purposes
- Observations
- Product defects
- Experiences
- Other designs
- New materials
- New technology
- New manufacturing processes
Purposes of design prototyping:
- Visual representation
- Study processing techniques
- Study design possibilities
- Study cross-scale coupling of systems that span size scales of several orders of magnitude.
- Function
- Form
- Flow
- Physics
- Fabrication
Types of design prototyping:
Does prototyping improve quality?
Does prototyping improve the designer?
Design tolerance is the difference between upper and lower limits of a dimension.
- Components in product may have different tolerances.
- Tolerance is relative to size of component or product.
There are different types of tolerance levels:
Why do we need tolerances for manufacturing?
Does tolerance affect cost of product?
Is it better to have smaller tolerances?
