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Topic: Semiconductor fabrication

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	Semiconductor fabrication - Wikipedia, the free encyclopedia
		Semiconductor device fabrication is the process used to create chips, the integrated circuits that are present in everyday electrical and electronic devices.
		The workers in a semiconductor fabrication facility are required to wear cleanroom suits to protect the devices from human contamination.
		In an effort to increase profits, semiconductor device manufacture spread from Texas and California in the 1960s to the rest of the world, such as Ireland, Israel, Japan, Taiwan, Korea, Singapore and China, and is a global business today.
	en.wikipedia.org /wiki/Semiconductor_fabrication (1822 words)

	Britney Spears guide to Semiconductor Physics: Fabrication of VCSELs.
		The next stage of the fabrication process is to turn the single crystal of semiconductor material into many thinly sliced wafers.
		The mean free path of the atoms is long enough under the conditions of vacuum within the bell-jar to eventually coat the surface of the semiconductor.
		Etching may be required in the fabrication of VCSELs, for example to create the mesa structure of air post VCSELs or in creating areas for re-growth for current blocking layers.
	britneyspears.ac /physics/fabrication/fabrication.htm (1968 words)

	Arc Machines, Inc., Semiconductor Cleanroom Fabrication
		Fabrication for the rapidly moving semiconductor industry is a never-ending challenge.
		Fabrication is done in a cleanroom using state-of-the-art orbital welding technology.
		CFS is continually improving upon their fabrication facility with purchases of sophisticated equipment designed to be compatible with current semiconductor technology.
	www.arcmachines.com /appPages/cambr02.html (2968 words)

	Method for removing black silicon in semiconductor fabrication - Patent 6383936
		First, a trench is formed in a semiconductor substrate having a pad dielectric layer and a hard mask layer.
		In the fabrication of integrated circuits (ICs), trenches are typically formed in a substrate, such as a silicon wafer.
		People in the semiconductor industry have found that needle-type surfaces usually between about 3 to 7 microns in length are formed at the edges of the wafer after etching DTs.
	www.freepatentsonline.com /6383936.html (1079 words)

	Development of Diffusion for Semiconductor Device Fabrication
		As is common knowledge, semiconductor devices are made by introducing small amounts of specific dopants at explicit locations and in carefully controlled concentrations.
		For the semiconductor industry, diffusion consists of the dopant atoms migrating into the host semiconductor crystal lattice from a source, usually at the surface, by "stepping" through vacant lattice sites, that is, by a substitutional mode.
		This is caused by an effective electric field, that occurs in semiconductors around sharp gradients of junctions, which electric field influences the migration of the dopant atoms since they are usually in the ionic state.
	www.smecc.org /development_of_diffusion_for_semiconductor_devices.htm (2124 words)

	Native oxide formation technique for Group III-V semiconductor device fabrication that enhances the oxidation rate
		Thin-film oxide layers situated amid or upon the multiple, single-crystal, thin-film semiconductor layers that compose electronic and optoelectronic devices are useful for their electrical insulating and low refractive index properties.
		In general, the technique is applicable to the fabrication of electronic and optoelectronic devices lattice matched to substrates that are not lattice matched to a high aluminum content Group III-V semiconductor material.
		In particular, the technique is applicable to the fabrication of devices that are lattice matched to indium phosphide substrates.
	www.nsa.gov /techtrans/techt00017.cfm (1197 words)

	Converium: Risks in Semiconductor Fabrication Plants
		Silicon wafers are treated with thin layers of insulators, semiconductors, conductors, photoresistors, or other materials depending on the type and complexity of the chip being manufactured.
		The semiconductor industry manufactures a product with a typical life span of 9 to 12 months, quite a contrast with the 2 to 3 years it takes to construct a fabrication plant and install the necessary equipment for production.
		A semiconductor plant, whose product is worth billions of dollars annually, relies on a highly specialized manufacturing process which must be meticulously maintained in an environment 1,000 times cleaner than a hospital surgical suite.
	www.converium.com /239.asp (2225 words)

	Silicon Semiconductor Fabrication (Site not responding. Last check: 2007-11-07)
		The current process for fabricating practical silicon semiconductor devices typically involves eight different steps, some of which are repeatedly employed to generate certain electrical characteristics.
		The first stage of the semiconductor manufacturing process involves growing a single crystal of silicon into a solid cylindrical shape.
		However, it use is limited to early stages of the semiconductor fabrication process when the silicon substrate is still exposed.
	www.ensc.sfu.ca /people/faculty/jones/ENSC100/Gamma/semifab.html (461 words)

	Semiconductor Fabrication
		According to the Semiconductor Industry Association's extrapolation of formulas such as this one (SIA roadmap), it is expected that the sizes of circuits within our chips will reach the size of only a few atoms in about 20 years.
		Since almost all of our modern computers are made from silicon semiconductor transistors patterned and carved by light (photolithography), the shrinking of circuits predicted by the SIA may not be the most economical method for the future.
		As transistors such as the Metal-Oxide Semiconductor Field Effect Transistor (MOSFET - one of the primary components used in integrated circuits) is made smaller, both its properties and manufacturing expense change with the scale.
	www.nanoword.net /pages/semi.htm (311 words)

	UC Berkeley's Semiconductor Manufacturing Research (Site not responding. Last check: 2007-11-07)
		Metrics for measuring semiconductor manufacturing performance are proposed and illustrated for the participants.
		In the US semiconductor industry, one sees the recent emergence of sourcing relationships in which chip designers and manufacturers enter co-development arrangements with suppliers where the concern seems anything but the protection of assets.
		As representatives of the Competitive Semiconductor Manufacturing research program from the University of California, Berkeley, we are serving on the SEMI Task Force for the measurement of equipment productivity and have made contributions to the original standard.
	esrc.berkeley.edu /csm/csmab.html (3892 words)

	Semiconductor Fabrication - Brooks Automation, Inc. (Site not responding. Last check: 2007-11-07)
		Brooks Automation delivers lean manufacturing solutions for semiconductor manufacturers supporting both the fab and backend test, assembly and packaging operations.
		We draw upon the years of deployment expertise and our unparalleled domain expertise in the semiconductor space and bring that value and global best practices knowledge to every implementation.
		A successful implementation and startup of a semiconductor foundry fab is dependent on a variety of factors.
	www.brooks.com /pages/926_semiconductor_fabrication.cfm?redirect=yes (1148 words)

	Semiconductor Manufacturing: Overview
		The models are required by semiconductor manufacturers in order to predict process behavior under an exhaustive set of operating conditions, and with a very high degree of precision.
		The sensor is fabricated using multilayer molded, micromachined platforms and will facilitate in-situ characterization of etch rate at various locations on the wafer surface.
		Consistent demands on semiconductor manufacturers to produce circuits with increased density and complexity have made stringent process control an issue of growing importance in the industry.
	users.ece.gatech.edu /~gmay/overview.html (6796 words)

	DRDB: BAAQMD 8-30 SEMICONDUCTOR WAFER FABRICATION OPERATIONS (Site not responding. Last check: 2007-11-07)
		For the purpose of this Rule, semiconductor wafer fabrication operations are limited to the manufacture of semiconductor and other related integrated circuits.
		Any operation which uses VOC during semiconductor wafer fabrication, but which is exempt from the provisions of this rule, shall be subject to the provisions of Regulation 8, Rule 4, if not already subject to another rule of Regulation 8.
		A physically identifiable area in a semiconductor manufacturing facility where one or more specific operations in the fabrication of semiconductors or related solid state devices occurs and which is permitted as a single source.
	www.arb.ca.gov /DRDB/BA/CURHTML/r8-30.htm (1882 words)

	Everything Wafers/Silicon Fabrication/Substrates/Semiconductor Properties/Crystal Orientation
		Integrated circuits can then be fabricated on the top layer of the SOI wafers using the same processes as would be used on plain silicon wafers.
		In this process a bulk semiconductor wafer is bombarded with oxygen ions, crating a layer of buried oxide.
		New semiconductor material based completely on organic components (primarily carbon, hydrogen, and oxygen); these low-cost semiconductors can be formed as a thin film on any substrate.
	www.ee.byu.edu /cleanroom/everything_wafers.phtml (2585 words)

	Semiconductor Manufacturing by Elmer Epistola
		Prior to wafer fabrication, the raw silicon wafers to be used for this purpose are first produced from very pure silicon ingots, through either the
		The semiconductor industry has already advanced tremendously that there now exist so many distinct wafer fab processes, allowing the device designer to optimize his design by selecting the best fab process for his device.
		Such is the process of wafer fabrication, consisting of a long series of mask/etch and mask/deposition steps until the circuit is completed.
	www.semiconfareast.com /manufacturing.HTM (671 words)

	Fab Owners Association -- An association for semiconductor wafer fabrication owners
		They are the suppliers to the semiconductor industry representing the latest information, products, and practices that provide substantial efficiencies for our device maker members.
		Our purpose, in conjunction with the vision, is for the Association to facilitate and provide solutions on issues related to the semiconductor manufacturing industry that the members feel are more effectively or efficiently undertaken as an industry association than as individual companies.
		All semiconductor and MEMS companies with an interest and means to manufacture such devices are eligible for membership.
	www.waferfabs.org /faq.html (587 words)

	Semiconductor Fabrication - Your online semiconductor fabrication market research company (Site not responding. Last check: 2007-11-07)
		The semiconductor fabrication business enables semiconductor fabs to be produced at lower prices with more output.
		The semiconductor fabrication industry is a fragmented business, characterized by continuous technological changes and innovation.
		OUR CLIENTS include, the major semiconductor fabrication manufacturers, fabless semiconductor companies, fab builders, material companies, development agencies and financial institutions.
	www.scfab.com /semiconductor-fabrication.htm (257 words)

	EPRI: Power Electronics in the Semiconductor Fabrication Industry (Site not responding. Last check: 2007-11-07)
		To provide insight into the application of power electronics technologies and electric energy conversion to the semiconductor industry; to raise awareness of practical performance and power quality issues related to the application of power electronics systems in the industry; to provide a roadmap for what should be done to enhance the application of power-electronic systems.
		The team also reviewed recent EPRI work related to power quality in the semiconductor industry to gain insight on the important issues and to understand the power electronics systems that are used in semiconductor tools.
		Utilities need insight into the future of the semiconductor industry and the issues involving system energy efficiency and compatibility standards in order to better serve their semiconductor manufacturing customers.
	www.epri.com /OrderableitemDesc.asp?product_id=TR-112432 (649 words)

	Submicron expense vexes industry - semiconductor fabrication facilities Electronic News - Find Articles
		As evidenced by the recent SPIE conference here, there is agreement that the U.S. government can help underwrite the industry with its direct or consortium funding efforts, but the fed are not in a pisition to set an industrial policy, business agenda or technical direction.
		In lieu of any solid leadership, then, the general belief is that loose parnerships of government groups, semincoductor manufacturers and their equipment and materials suppliers must continue to carry the day in order to reconcile rising costs and corporate financial viability.
		In years past, the semiconductor industry could look to IBM and AT&T Bell Laboratories to make the substantial investments necessary to move to the next generation of fab technology.
	www.findarticles.com /p/articles/mi_m0EKF/is_n2006_v40/ai_15082115 (844 words)

	Ion Implantation
		SEMI (Semiconductor Equipment and Materials Internation) is an international trade association that represents semiconductor and flat panel display equipment and materials suppliers.
		SEMATECH is a consortium of American semiconductor manufacturers working with government and academia to sponsor and conduct research aimed at assuring leadership in semiconductor manufacturing technology for the U.S. semiconductor industry.
		Semiconductor Physics Research Center (SPRC) is one of 13 centers of excellence designated by the Korea Science and Engineering Foundation (KOSEF) for the first time in 1990.
	www.casetechnology.com /links.html (4083 words)

	Method and system employing optical emission spectroscopy for monitoring and controlling semiconductor fabrication ...
		Optical emissions spectrometer (OES) data readings from a fabrication plasma chamber are statistically analyzed and a novel pattern model (based on Markov random fields) is used in combination with a selective stochastic relaxation technique to identify gaseous species within the chamber from the OES readings.
		An automated method for operating a semiconductor manufacturing apparatus within predefined or derived limits, said apparatus having a fabrication chamber with at least one of a flow rate controllable gaseous species inlet, an adjustable radio frequency powering means and a pressure adjustment mechanism, said automated method comprising the steps of:
		Fabrication process of semiconducting materials and semiconductor devices
	www.delphion.com /details?pn10=US05347460 (676 words)

	Samsung Austin Semiconductor
		is one of the most advanced semiconductor fabrication plants in the world.
		The US-chartered company is owned by Samsung Electronics, the giant $60-billion Korean high tech company, and is the company’s only semiconductor manufacturing plant located outside of Korea.
		The 34,000 square foot expansion of Samsung Austin Semiconductor’s manufacturing area is part of a succession of investments that will equip the Austin plant to produce next generation nano-scale semiconductor memory technology.
	www.sas.samsung.com (126 words)

	Wafer Fabrication (Site not responding. Last check: 2007-11-07)
		This unit begins the actual fabrication of the integrated circuit.
		The building of the layers that make up the integrated circuit are accomplished in five functional Fabrication areas.
		The entire processing of a complex circuit, such as a computer processor, requires over 200 operations but these are comprised of revisiting the five functional areas as required.
	www.engineering-ed.org /Semiconductor/documents/wafer_fabrication.htm (173 words)

	The ABCs of Semiconductor Fabrication
		The course is for nontechnical individuals associated with the semiconductor industry, such as those holding positions in sales, marketing, and administration, as well as engineers, process technicians, and line operators who want to learn the fundamentals of fabrication.
		Topics include a general review of the basic concepts of physics and chemistry as they relate to fabrication technology, followed by a discussion of semiconductor processes.
		At the end of this course you should understand the basic processes required to fabricate integrated devices, grasp the basic vocabulary of the semiconductor industry, and have an overview of the devices used as the building blocks for integrated circuits.
	www.unex.berkeley.edu /unex/cat/course811.html (179 words)

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