Early electronic device the vacuum tube

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Early electronic devicethe vacuum tube
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How engineers in 1954 expected a computer to look
like in 2004
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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
• Todays computer microprocessors can contain
  several million transistors on an area about the
  size of ones thumbnail

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• 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

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Micro-photo of an older era IC (integrated
circuit) showing a small portion of the circuit
magnified many times
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Simple wire bonds to an LED (Light Emitting Diode)
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Complex wire bonding to multiple chips
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The ECE project will be fabricated in the CARC
Microelectronics clean room

• All students will be required to work in the
  clean room

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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

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In microelectronics size matters
The common unit of measurement in a clean room is
the micron or micrometer
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Simple Clean Room work area
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ECE Clean Room in CAMERONuses a membrane
diffusion ceiling with HEPA filters and through
the wall returns
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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
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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