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Class Information
Number: 257/567
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Bipolar transistor structure > Plural non-isolated transistor structures in same structure > Darlington configuration (i.e., emitter to collector current of input transistor supplied to base region of output transistor)
Description: Subject matter wherein the plural non-electrically isolated transistor structures are arranged in a Darlington configuration (i.e., wherein the emitter to collector current of an input transistor is supplied to the base region of an output transistor).

Sub-classes under this class:

Class Number Class Name Patents
257/569 Complementary darlington-connected transistors 21
257/568 More than two darlington-connected transistors 26
257/571 Non-planar structure (e.g., mesa emitter, or having a groove to define resistor) 71
257/570 With active components in addition to darlington transistors (e.g., antisaturation diode, bleeder diode connected antiparallel to input transistor base-emitter junction, etc.) 50
257/573 With housing or contact structure or configuration 33
257/572 With resistance means connected between transistor base regions 44

Patents under this class:
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Patent Number Title Of Patent Date Issued
8432021 Manufacturing method of SOI substrate Apr. 30, 2013
8330252 Integrated circuit device and method for the production thereof Dec. 11, 2012
8008746 Semiconductor device Aug. 30, 2011
7800428 Semiconductor device and method for controlling a semiconductor device Sep. 21, 2010
7714389 Semiconductor device having two bipolar transistors constituting electrostatic protective element May. 11, 2010
7601990 Method and apparatus for electrostatic discharge protection having a stable breakdown voltage and low snapback voltage Oct. 13, 2009
7323750 Bipolar transistor and semiconductor device using same Jan. 29, 2008
7061074 Visible imaging device using Darlington phototransistors Jun. 13, 2006
7045877 Semiconductor protection device May. 16, 2006
6969904 Trimming pattern Nov. 29, 2005
6949802 ESD protection structure Sep. 27, 2005
6933588 High performance SCR-like BJT ESD protection structure Aug. 23, 2005
6917080 Bipolar transistor and semiconductor device using same Jul. 12, 2005
6809400 Composite pinin collector structure for heterojunction bipolar transistors Oct. 26, 2004
6794730 High performance PNP bipolar device fully compatible with CMOS process Sep. 21, 2004
6744115 Semiconductor device and process of production of same Jun. 1, 2004
6348724 Semiconductor device with ESD protection Feb. 19, 2002
6329698 Forming a self-aligned epitaxial base bipolar transistor Dec. 11, 2001
6300669 Semiconductor integrated circuit device and method of designing same Oct. 9, 2001
6281530 LPNP utilizing base ballast resistor Aug. 28, 2001
6271999 ESD protection circuit for different power supplies Aug. 7, 2001
6084263 Power device having high breakdown voltage and method of manufacturing the same Jul. 4, 2000
6046492 Semiconductor temperature sensor and the method of producing the same Apr. 4, 2000
5969399 High gain current mode photo-sensor Oct. 19, 1999
5804861 Electrostatic discharge protection in integrated circuits, systems and methods Sep. 8, 1998
5789799 High frequency noise and impedance matched integrated circuits Aug. 4, 1998
5629551 Semiconductor device comprising an over-temperature detection element for detecting excessive temperatures amplifiers May. 13, 1997
5629545 Electrostatic discharge protection in integrated circuits, systems and methods May. 13, 1997
5541439 Layout for a high voltage darlington pair Jul. 30, 1996
5525826 Integrated vertical bipolar and vertical MOSFET transistors Jun. 11, 1996
5461252 Semiconductor device comprising an over-temperature detection element for detecting excessive temperature of amplifiers Oct. 24, 1995
5449949 Monolithic integrated semiconductor device Sep. 12, 1995
5410177 Planar semiconductor and Zener diode device with channel stopper region Apr. 25, 1995
5397913 Biopolar/Darlington transistor having enhanced comprehensive electricity characteristics Mar. 14, 1995
5227657 Base-emitter reverse bias protection for BICMOS IC Jul. 13, 1993
5172209 Integral Bi-CMOS logic circuit Dec. 15, 1992
5170240 Input protection structure for integrated circuits Dec. 8, 1992
5083182 Darlington device with an ultra-lightweight emitter speed-up transistor Jan. 21, 1992
5072268 MOS gated bipolar transistor Dec. 10, 1991
4931666 Darlington-connected semiconductor device Jun. 5, 1990
4918494 Thin film transistor Apr. 17, 1990
4905069 Darlington transistor arrangement Feb. 27, 1990
4897705 Lateral bipolar transistor for logic circuit Jan. 30, 1990
4755694 Integrated circuit Darlington transistor power stage incorporating various circuit components integrated on the same substrate Jul. 5, 1988
4656496 Power transistor emitter ballasting Apr. 7, 1987
4642668 Semiconductor device having improved thermal characteristics Feb. 10, 1987
4446478 Assembly in a single case of a main power-switching semiconductor component and a destorage diode May. 1, 1984
4374364 Darlington amplifier with excess-current protection Feb. 15, 1983
4317128 Two transistor switch Feb. 23, 1982
4204130 Multicollector transistor logic circuit May. 20, 1980

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