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Class Information
Number: 257/596
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Voltage variable capacitance device > With specified dopant profile
Description: Subject matter wherein the device has a cross section which has a specified impurity dopant concentration across it.

Sub-classes under this class:

Class Number Class Name Patents
257/597 Retrograde dopant profile (e.g., dopant concentration decreases with distance from rectifying junction) 21

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8592902 Semiconductor structure that reduces the effects of gate cross diffusion and method of forming the structure Nov. 26, 2013
8502349 PN-junction varactor in a BiCMOS process and manufacturing method of the same Aug. 6, 2013
8492823 High performance tapered varactor Jul. 23, 2013
8450832 Large tuning range junction varactor May. 28, 2013
7989302 Methods of forming a hyper-abrupt P-N junction and design structures for an integrated circuit Aug. 2, 2011
7952131 Lateral junction varactor with large tuning range May. 31, 2011
7902637 Nano structure and method of manufacturing nano structure Mar. 8, 2011
7821103 Counter-doped varactor structure and method Oct. 26, 2010
7804119 Device structures with a hyper-abrupt P-N junction, methods of forming a hyper-abrupt P-N junction, and design structures for an integrated circuit Sep. 28, 2010
7696604 Silicon germanium heterostructure barrier varactor Apr. 13, 2010
7696599 Trench MOSFET Apr. 13, 2010
7619273 Varactor Nov. 17, 2009
7554146 Metal-insulator-metal capacitor and method of fabricating the same Jun. 30, 2009
7521383 Manufacturing method of semiconductor device Apr. 21, 2009
7511353 Semiconductor diode and production method suitable therefor Mar. 31, 2009
7446012 Lateral PNP transistor and the method of manufacturing the same Nov. 4, 2008
7244669 Patterning of devices Jul. 17, 2007
7157766 Variable capactor structure and method of manufacture Jan. 2, 2007
7126152 Storage device Oct. 24, 2006
7023072 Bipolar transistor Apr. 4, 2006
6995068 Double-implant high performance varactor and method for manufacturing same Feb. 7, 2006
6987309 Semiconductor device applied to a variable capacitance capacitor and amplifier Jan. 17, 2006
6967344 Multi-terminal chalcogenide switching devices Nov. 22, 2005
6882029 Junction varactor with high Q factor and wide tuning range Apr. 19, 2005
6878983 High performance varactor diodes Apr. 12, 2005
6825089 Increased quality factor of a varactor in an integrated circuit via a high conductive region in a well Nov. 30, 2004
6825546 CMOS varactor with constant dC/dV characteristic Nov. 30, 2004
6787882 Semiconductor varactor diode with doped heterojunction Sep. 7, 2004
6770923 High K dielectric film Aug. 3, 2004
6710418 Schottky rectifier with insulation-filled trenches and method of forming the same Mar. 23, 2004
6661074 Receiver comprising a variable capacitance diode Dec. 9, 2003
6653716 Varactor and method of forming a varactor with an increased linear tuning range Nov. 25, 2003
6642607 Semiconductor device Nov. 4, 2003
6627963 Method for fabricating a merged integrated circuit device Sep. 30, 2003
6608747 Variable-capacitance device and voltage-controlled oscillator Aug. 19, 2003
6521506 Varactors for CMOS and BiCMOS technologies Feb. 18, 2003
6448628 Chip decoupling capacitor Sep. 10, 2002
6225151 Nitrogen liner beneath transistor source/drain regions to retard dopant diffusion May. 1, 2001
6124625 Chip decoupling capacitor Sep. 26, 2000
6037650 Variable capacitance semiconductor device Mar. 14, 2000
5965912 Variable capacitor and method for fabricating the same Oct. 12, 1999
5825075 Variable capacitance diode device and method of manufacturing same Oct. 20, 1998
5789801 Varactor with electrostatic barrier Aug. 4, 1998
5627402 Variable-capacitance device and semiconductor integrated circuit device having such variable-capacitance device May. 6, 1997
5612567 Schottky barrier rectifiers and methods of forming same Mar. 18, 1997
5557140 Process tolerant, high-voltage, bi-level capacitance varactor diode Sep. 17, 1996
5506442 Variable-capacitance device and semiconductor integrated circuit device having such variable-capacitance device Apr. 9, 1996
5504376 Stacked-type semiconductor device Apr. 2, 1996
5338966 Variable capacitance diode device Aug. 16, 1994
5336923 Varactor diode having a stepped capacitance-voltage profile Aug. 9, 1994

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