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Class Information
Number: 438/320
Name: Semiconductor device manufacturing: process > Forming bipolar transistor by formation or alteration of semiconductive active regions > Having heterojunction > Self-aligned
Description: Process for making a heterojunction bipolar transistor wherein a previously formed device feature is utilized to make device regions in the desired registration to the previously formed feature.










Sub-classes under this class:

Class Number Class Name Patents
438/321 Utilizing dummy emitter 52


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8673707 Method for forming metal gate Mar. 18, 2014
8648391 SiGe heterojunction bipolar transistor with an improved breakdown voltage-cutoff frequency product Feb. 11, 2014
8613862 Method for manufacturing liquid discharge head substrate Dec. 24, 2013
8574994 HBT with emitter electrode having planar side walls Nov. 5, 2013
8486797 Bipolar junction transistor with epitaxial contacts Jul. 16, 2013
8133791 Method of manufacturing a bipolar transistor and bipolar transistor obtained therewith Mar. 13, 2012
8048734 Bipolar transistor and method for making same Nov. 1, 2011
7935606 Transistor manufacture May. 3, 2011
7923340 Method to reduce collector resistance of a bipolar transistor and integration into a standard CMOS flow Apr. 12, 2011
7892943 Isolation trenches for memory devices Feb. 22, 2011
7875523 HBT with emitter electrode having planar side walls Jan. 25, 2011
7846806 System and method for providing a self aligned silicon germanium (SiGe) heterojunction bipolar transistor using a mesa emitter-base architecture Dec. 7, 2010
7838375 System and method for providing a polyemit module for a self aligned heterojunction bipolar transistor architecture Nov. 23, 2010
7732292 Bipolar transistor with self-aligned retrograde extrinsic base implant profile and self-aligned silicide Jun. 8, 2010
7709338 BiCMOS devices with a self-aligned emitter and methods of fabricating such BiCMOS devices May. 4, 2010
7696034 Methods of base formation in a BiCOMS process Apr. 13, 2010
7651919 Bandgap and recombination engineered emitter layers for SiGe HBT performance optimization Jan. 26, 2010
7615457 Method of fabricating self-aligned bipolar transistor having tapered collector Nov. 10, 2009
7615455 Integrated circuit bipolar transistor Nov. 10, 2009
7611955 Method of forming a bipolar transistor and semiconductor component thereof Nov. 3, 2009
7598148 Non-self-aligned heterojunction bipolar transistor and a method for preparing a non-self-aligned heterojunction bipolar transistor Oct. 6, 2009
7557010 Method to improve writer leakage in a SiGe bipolar device Jul. 7, 2009
7521313 Thin film device active matrix by pattern reversal process Apr. 21, 2009
7498620 Integration of phosphorus emitter in an NPN device in a BiCMOS process Mar. 3, 2009
7465969 Bipolar transistor and method for fabricating the same Dec. 16, 2008
7422951 Method of fabricating self-aligned bipolar transistor Sep. 9, 2008
7390721 Methods of base formation in a BiCMOS process Jun. 24, 2008
7368764 Heterojunction bipolar transistor and method to make a heterojunction bipolar transistor May. 6, 2008
7354820 Heterojunction bipolar transistor with dielectric assisted planarized contacts and method for fabricating Apr. 8, 2008
7303968 Semiconductor device and method having multiple subcollectors formed on a common wafer Dec. 4, 2007
7262483 Semiconductor device and method for manufacturing the same Aug. 28, 2007
7190047 Transistors and methods for making the same Mar. 13, 2007
7186582 Process for deposition of semiconductor films Mar. 6, 2007
7166517 Semiconductor device and method of manufacture thereof Jan. 23, 2007
7151035 Semiconductor device and manufacturing method thereof Dec. 19, 2006
7118981 Method of fabricating an integrated silicon-germanium heterobipolar transistor and an integrated silicon-germanium heterobipolar transistor Oct. 10, 2006
7098114 Method for forming cmos device with self-aligned contacts and region formed using salicide process Aug. 29, 2006
7091099 Bipolar transistor and method for fabricating the same Aug. 15, 2006
7087940 Structure and method of forming bipolar transistor having a self-aligned raised extrinsic base using self-aligned etch stop layer Aug. 8, 2006
7049201 Method and apparatus for a heterojunction bipolar transistor using self-aligned epitaxy May. 23, 2006
7037799 Breakdown voltage adjustment for bipolar transistors May. 2, 2006
7037798 Bipolar transistor structure with self-aligned raised extrinsic base and methods May. 2, 2006
7022578 Heterojunction bipolar transistor using reverse emitter window Apr. 4, 2006
7008815 Method of manufacturing a self-aligned guard ring of a photo diode Mar. 7, 2006
6979626 Method for fabricating a self-aligned bipolar transistor having increased manufacturability and related structure Dec. 27, 2005
6962842 Method of removing a sacrificial emitter feature in a BICMOS process with a super self-aligned BJT Nov. 8, 2005
6958253 Process for deposition of semiconductor films Oct. 25, 2005
6924202 Heterojunction bipolar transistor with self-aligned emitter and sidewall base contact Aug. 2, 2005
6924201 Heterojunction bipolar transistor and method of producing the same Aug. 2, 2005
6911369 Discontinuity prevention for SiGe deposition Jun. 28, 2005

1 2 3 4










 
 
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