2. Early electronic device the vacuum tube

3. How engineers in 1954 expected a computer to look like in 2004

4. What is microelectronics?
Microelectronics is a general term used to identify miniaturized electronic devices and circuits
Other terms used in conjunction with microelectronics devices are solid state devices, semiconductor devices, computer chips, etc.
Early microelectronic devices started as diodes and transistors
Several transistors and passive components were combined into the first integrated circuits or ICs
Many integrated circuit functions were combined into the first computer processors
Processors evolved with more capability, faster calculations, integrated drivers and additional functions on a single processor
Today’s computer microprocessors can contain several million transistors on an area about the size of one’s thumbnail

5. Electronic material, usually silicon, is processed in a “clean room” and miniature circuits are created
These circuits are the brains of electronic devices today
Processing capabilities are advancing rapidly, allowing more and more circuitry in smaller and smaller areas
Thus, smaller, cheaper, more capable electronic devices are introduced continually

6. Micro-photo of an older era IC (integrated circuit) showing a small portion of the circuit magnified many times

7. Simple wire bonds to an LED (Light Emitting Diode)

8. Complex wire bonding to multiple chips

9. All students will be required to work in the clean room
The ECE project will be fabricated in the CARC Microelectronics clean room
All students will be required to work in the clean room

11. What is a “clean room”
A better name for a “clean room’ would be a “contamination control” room
The goal of a clean room is to minimize the contamination that might effect a product and to provide a “clean” manufacturing environment for the fabrication of products
Clean rooms were originally exclusive to microelectronics manufacturing
Today clean rooms are used in many industries and applications
Microelectronics
Optoelectronics
Pharmaceuticals
Certain food packaging
CD and DVD manufacturing
Satellite assembly
Many other industries
Intel microprocessors have design rules that space components 150 nm apart (.15 micron spacing)
An Intel advanced microprocessor is about the size of a thumb nail and many hundreds are produced simultaneously on 12” (304mm) silicon wafers

12. In microelectronics size matters
The common unit of measurement in a clean room is the micron or micrometer

18. Simple Clean Room work area

19. ECE Clean Room in CAMERON uses a membrane diffusion ceiling with HEPA filters and through the wall returns

21. Gowning required to work in the ECE Clean Room
Face mask
Hood
Gloves- latex.
If you are allergic to latex, alternatives are available
Coverall
Boots

23. Next homework assignment
HW 4 from the web site
Write a one page report on “Bluetooth” and “Wi-Fi” technology
Be sure to include the frequency of operation of “Bluetooth” and “Wi-Fi”
Include the origins of “Bluetooth”
Include at least two references
Due next class meeting