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- Wafer_fabrication abstract "Wafer fabrication is a procedure composed of many repeated sequential processes to produce complete electrical or photonic circuits. Examples include production of radio frequency (RF) amplifiers, LEDs, optical computer components, and CPUs for computers. Wafer fabrication is used to build components with the necessary electrical structures.The main process begins with electrical engineers designing the circuit and defining its functions, and specifying the signals, inputs, outputs and voltages needed. These electrical circuit specifications are entered into electrical circuit design software, such as SPICE, and then imported into circuit layout programs, which are similar to ones used for computer aided design. This is necessary for the layers to be defined for photomask production. The resolution of the circuits increases rapidly with each step in design, as the scale of the circuits at the start of the design process is already being measured in fractions of micrometers. Each step thus increases circuit density for a given area.The silicon wafers start out blank and pure. The circuits are built in layers in clean rooms. First, photoresist patterns are photo-masked in micrometer detail onto the wafers' surface. The wafers are then exposed to short-wave ultraviolet light and the unexposed areas are thus etched away and cleaned. Hot chemical vapors are deposited on to the desired zones and baked in high heat, which permeate the vapors into the desired zones. In some cases, ions, such as O2+ or O+, are implanted in precise patterns and at a specific depth by using RF-driven ion sources.These steps are often repeated many hundreds of times, depending on the complexity of the desired circuit and its connections.New processes to accomplish each of these steps with better resolution and in improved ways emerge every year, with the result of constantly changing technology in the wafer fabrication industry. New technologies result in denser packing of minuscule surface features such as transistors and micro-electro-mechanical systems (MEMS). This increased density continues the trend often cited as Moore's Law.A fab is a common term for where these processes are accomplished. Often the fab is owned by the company that sells the chips, such as AMD, Intel, Texas Instruments, or Freescale. A foundry is a fab at which semiconductor chips or wafers are fabricated to order for third party companies that sell the chip, such as fabs owned by Taiwan Semiconductor Manufacturing Company (TSMC), United Microelectronics Corporation (UMC) and Semiconductor Manufacturing International Corporation (SMIC).In 2013 the cost of building the next generation wafer fab was estimated at over $10 billion.".
- Wafer_fabrication thumbnail CMOS_fabrication_process.svg?width=300.
- Wafer_fabrication wikiPageID "1423383".
- Wafer_fabrication wikiPageLength "3800".
- Wafer_fabrication wikiPageOutDegree "33".
- Wafer_fabrication wikiPageRevisionID "627963445".
- Wafer_fabrication wikiPageWikiLink Advanced_Micro_Devices.
- Wafer_fabrication wikiPageWikiLink Category:Semiconductor_device_fabrication.
- Wafer_fabrication wikiPageWikiLink Central_processing_unit.
- Wafer_fabrication wikiPageWikiLink Chemical_substance.
- Wafer_fabrication wikiPageWikiLink Chemical_vapor_deposition.
- Wafer_fabrication wikiPageWikiLink Cleanroom.
- Wafer_fabrication wikiPageWikiLink Computer.
- Wafer_fabrication wikiPageWikiLink Computer-aided_design.
- Wafer_fabrication wikiPageWikiLink Electrical_engineering.
- Wafer_fabrication wikiPageWikiLink Electrical_network.
- Wafer_fabrication wikiPageWikiLink Freescale_Semiconductor.
- Wafer_fabrication wikiPageWikiLink Heat.
- Wafer_fabrication wikiPageWikiLink Intel.
- Wafer_fabrication wikiPageWikiLink Light-emitting_diode.
- Wafer_fabrication wikiPageWikiLink List_of_MEMS_foundries.
- Wafer_fabrication wikiPageWikiLink Moores_law.
- Wafer_fabrication wikiPageWikiLink Optical_computing.
- Wafer_fabrication wikiPageWikiLink Photomask.
- Wafer_fabrication wikiPageWikiLink Photonics.
- Wafer_fabrication wikiPageWikiLink Photoresist.
- Wafer_fabrication wikiPageWikiLink RCA_clean.
- Wafer_fabrication wikiPageWikiLink Radio_frequency.
- Wafer_fabrication wikiPageWikiLink SPICE.
- Wafer_fabrication wikiPageWikiLink Semiconductor_Manufacturing_International_Corporation.
- Wafer_fabrication wikiPageWikiLink Semiconductor_fabrication_plant.
- Wafer_fabrication wikiPageWikiLink TSMC.
- Wafer_fabrication wikiPageWikiLink Texas_Instruments.
- Wafer_fabrication wikiPageWikiLink Transistor.
- Wafer_fabrication wikiPageWikiLink Ultraviolet.
- Wafer_fabrication wikiPageWikiLink United_Microelectronics_Corporation.
- Wafer_fabrication wikiPageWikiLink Vapor.
- Wafer_fabrication wikiPageWikiLink Voltage.
- Wafer_fabrication wikiPageWikiLinkText "Wafer fabrication".
- Wafer_fabrication wikiPageWikiLinkText "computer wafers".
- Wafer_fabrication wikiPageWikiLinkText "wafer fab".
- Wafer_fabrication wikiPageWikiLinkText "wafer fabrication".
- Wafer_fabrication wikiPageWikiLinkText "wafer starts".
- Wafer_fabrication wikiPageUsesTemplate Template:Double_image.
- Wafer_fabrication wikiPageUsesTemplate Template:Refimprove.
- Wafer_fabrication wikiPageUsesTemplate Template:Reflist.
- Wafer_fabrication subject Category:Semiconductor_device_fabrication.
- Wafer_fabrication hypernym Procedure.
- Wafer_fabrication type AnatomicalStructure.
- Wafer_fabrication type Process.
- Wafer_fabrication type Semiconductor.
- Wafer_fabrication comment "Wafer fabrication is a procedure composed of many repeated sequential processes to produce complete electrical or photonic circuits. Examples include production of radio frequency (RF) amplifiers, LEDs, optical computer components, and CPUs for computers.".
- Wafer_fabrication label "Wafer fabrication".
- Wafer_fabrication sameAs Q7959421.
- Wafer_fabrication sameAs m.050bwp.
- Wafer_fabrication sameAs Q7959421.
- Wafer_fabrication wasDerivedFrom Wafer_fabrication?oldid=627963445.
- Wafer_fabrication depiction CMOS_fabrication_process.svg.
- Wafer_fabrication isPrimaryTopicOf Wafer_fabrication.