Transcript Slide 1

Early electronic device
the vacuum tube
How engineers in 1954 expected a computer to
look like in 2004
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
• 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
Micro-photo of an older era IC (integrated
circuit) showing a small portion of the circuit
magnified many times
Simple wire bonds to an LED
(Light Emitting Diode)
Complex wire bonding to
multiple chips
The ECE project will be
fabricated in the CARC
Microelectronics clean room
All students will be required to
work in the clean room
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
1.
2.
3.
4.
5.
6.
7.
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
In
microelectronics
size matters
The common unit
of measurement
in a clean room is
the micron or
micrometer
Simple Clean Room work area
ECE Clean Room in CAMERON
uses a membrane diffusion ceiling with
HEPA filters and through the wall returns
Gowning required to work in the ECE
Clean Room
Hood
Coverall
Boots
Face mask
Gloves
Next homework assignment
• HW 3 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