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Class Information
Number: 438/362
Name: Semiconductor device manufacturing: process > Forming bipolar transistor by formation or alteration of semiconductive active regions > Including isolation structure > Recessed oxide by localized oxidation (i.e., locos)
Description: Process for making a bipolar transistor including the step of oxidizing a portion of a semiconductive material to form an embedded oxide (i.e., field oxide) therein which forms the periphery of a semiconductive region utilized for the formation of the bipolar transistor.










Sub-classes under this class:

Class Number Class Name Patents
438/363 With epitaxial semiconductor layer formation 149


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8546917 Electrostatic discharge protection having parallel NPN and PNP bipolar junction transistors Oct. 1, 2013
8513084 Transistor structure with a sidewall-defined intrinsic base to extrinsic base link-up region and method of forming the transistor Aug. 20, 2013
8263453 Method for forming semiconductor devices with active silicon height variation Sep. 11, 2012
8260098 Optocoupler circuit Sep. 4, 2012
8211778 Forming isolation regions for integrated circuits Jul. 3, 2012
8207044 Methods for oxidation of a semiconductor device Jun. 26, 2012
8030171 Method of forming element isolation film and nonvolatile semiconductor memory Oct. 4, 2011
8003459 Method for forming semiconductor devices with active silicon height variation Aug. 23, 2011
7947561 Methods for oxidation of a semiconductor device May. 24, 2011
7863145 Method and resulting structure using silver for LCOS devices Jan. 4, 2011
7863153 System and method for creating different field oxide profiles in a locos process Jan. 4, 2011
7736963 Method of forming a gate structure for a semiconductor device and method of forming a cell gate structure for a non-volatile memory device Jun. 15, 2010
7666735 Method for forming semiconductor devices with active silicon height variation Feb. 23, 2010
7601990 Method and apparatus for electrostatic discharge protection having a stable breakdown voltage and low snapback voltage Oct. 13, 2009
7577493 Temperature regulating method, thermal processing system and semiconductor device manufacturing method Aug. 18, 2009
7323390 Semiconductor device and method for production thereof Jan. 29, 2008
7314792 Method for fabricating transistor of semiconductor device Jan. 1, 2008
7259055 Method of forming high-luminescence silicon electroluminescence device Aug. 21, 2007
7151035 Semiconductor device and manufacturing method thereof Dec. 19, 2006
6955957 Method of forming a floating gate in a flash memory device Oct. 18, 2005
6838326 Semiconductor device, and method for manufacturing the same Jan. 4, 2005
6830977 METHODS OF FORMING AN ISOLATION TRENCH IN A SEMICONDUCTOR, METHODS OF FORMING AN ISOLATION TRENCH IN A SURFACE OF A SILICON WAFER, METHODS OF FORMING AN ISOLATION TRENCH-ISOLATED TRANSISTOR, T Dec. 14, 2004
6803259 Silicon controlled rectifier for sige process, manufacturing method thereof and integrated circuit including the same Oct. 12, 2004
6746908 Temperature controlling method, thermal treating apparatus, and method of manufacturing semiconductor device Jun. 8, 2004
6713361 Method of manufacturing a bipolar junction transistor including undercutting regions adjacent to the emitter region to enlarge the emitter region Mar. 30, 2004
6627515 Method of fabricating a non-floating body device with enhanced performance Sep. 30, 2003
6579777 Method of forming local oxidation with sloped silicon recess Jun. 17, 2003
6579774 Semiconductor device fabrication method Jun. 17, 2003
6436780 Semiconductor device Aug. 20, 2002
6420224 Stepper alignment mark formation with dual field oxide process Jul. 16, 2002
6403427 Field effect transistor having dielectrically isolated sources and drains and method for making same Jun. 11, 2002
6362038 Low and high voltage CMOS devices and process for fabricating same Mar. 26, 2002
6335233 Method for fabricating MOS transistor Jan. 1, 2002
6331470 Process for manufacturing a semiconductor material wafer having power regions dielectrically insulated from circuitry regions Dec. 18, 2001
6300232 Semiconductor device having protective films surrounding a fuse and method of manufacturing thereof Oct. 9, 2001
6258689 Low resistance fill for deep trench capacitor Jul. 10, 2001
6239003 Method of simultaneous fabrication of isolation and gate regions in a semiconductor device May. 29, 2001
6225180 Semiconductor device and method of manufacturing the same May. 1, 2001
6225682 Semiconductor memory device having isolation structure and method of fabricating the same May. 1, 2001
6211022 Field leakage by using a thin layer of nitride deposited by chemical vapor deposition Apr. 3, 2001
6121114 Method for preparing a dummy wafer Sep. 19, 2000
6066545 Birdsbeak encroachment using combination of wet and dry etch for isolation nitride May. 23, 2000
6001709 Modified LOCOS isolation process for semiconductor devices Dec. 14, 1999
6001700 Method and mask structure for self-aligning ion implanting to form various device structures Dec. 14, 1999
5985734 Method for fabricating a semiconductor device Nov. 16, 1999
5970355 Method for fabricating semiconductor device Oct. 19, 1999
5958505 Layered structure with a silicide layer and process for producing such a layered structure Sep. 28, 1999
5908316 Method of passivating a semiconductor substrate Jun. 1, 1999
5856003 Method for forming pseudo buried layer for sub-micron bipolar or BiCMOS device Jan. 5, 1999
5846868 Method for forming a walled-emitter transistor Dec. 8, 1998

1 2 3










 
 
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