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Class Information
Number: 257/595
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Voltage variable capacitance device
Description: Subject matter wherein the active solid-state device has a capacitance which varies with the voltage applied thereto.










Sub-classes under this class:

Class Number Class Name Patents
257/601 Plural diodes in same non-isolated structure, or device having three or more terminals 77
257/599 With means to increase active junction area (e.g., grooved or convoluted surface) 37
257/600 With physical configuration to vary voltage dependence (e.g., mesa) 56
257/598 With plural junctions whose depletion regions merge to vary voltage dependence 34
257/596 With specified dopant profile 66
257/602 With specified housing or contact 45


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8691707 Voltage switchable dielectric for die-level electrostatic discharge (ESD) protection Apr. 8, 2014
8669605 Semiconductor device and arrangement method of compensation capacitor of semiconductor device Mar. 11, 2014
8633562 Voltage switchable dielectric for die-level electrostatic discharge (ESD) protection Jan. 21, 2014
8598683 Semiconductor structure having varactor with parallel DC path adjacent thereto Dec. 3, 2013
8541775 Schottky diode, resistive memory device having schottky diode and method of manufacturing the same Sep. 24, 2013
8531006 Memory capacitor made from field configurable ion-doped materials Sep. 10, 2013
8502348 Differential varactor device Aug. 6, 2013
8492823 High performance tapered varactor Jul. 23, 2013
8486798 Variable capacitance chamber component incorporating a semiconductor junction and methods of manufacturing and using thereof Jul. 16, 2013
8450832 Large tuning range junction varactor May. 28, 2013
8436698 MEMS-based tunable filter May. 7, 2013
8432706 Printed circuit board and electro application Apr. 30, 2013
8378453 Devices including composite thermal capacitors Feb. 19, 2013
8362591 Integrated circuits and methods of forming the same Jan. 29, 2013
8334571 Junction varactor for ESD protection of RF circuits Dec. 18, 2012
8314475 Nanoscale electronic device with anisotropic dielectric material Nov. 20, 2012
8242581 Mixed-gate metal-oxide-semiconductor varactors Aug. 14, 2012
8237243 On-chip capacitors with a variable capacitance for a radiofrequency integrated circuit Aug. 7, 2012
8232624 Semiconductor structure having varactor with parallel DC path adjacent thereto Jul. 31, 2012
8217496 Internal matching transistor Jul. 10, 2012
8212300 Semiconductor device Jul. 3, 2012
8115281 Differential varactor Feb. 14, 2012
8063426 Fast switching power insulated gate semiconductor device Nov. 22, 2011
8053866 Varactor structures Nov. 8, 2011
8039922 Variable capacitor employing MEMS technology Oct. 18, 2011
8004818 Adjustable device and method for varying the apparant value of capacitance Aug. 23, 2011
7989922 Highly tunable metal-on-semiconductor trench varactor Aug. 2, 2011
7876547 Vertical parallel plate capacitor structures Jan. 25, 2011
7863603 Cross-linked organic thin-film dielectrics Jan. 4, 2011
7824997 Membrane suspended MEMS structures Nov. 2, 2010
7821103 Counter-doped varactor structure and method Oct. 26, 2010
7781821 Parallel varactor capacitor with varying capacitance Aug. 24, 2010
7759194 Electrically programmable device with embedded EEPROM and method for making thereof Jul. 20, 2010
7741686 Trench isolated capacitive micromachined ultrasonic transducer arrays with a supporting frame Jun. 22, 2010
7728377 Varactor design using area to perimeter ratio for improved tuning range Jun. 1, 2010
7723719 Light emitting devices with inhomogeneous quantum well active regions May. 25, 2010
7714412 MOS varactor using isolation well May. 11, 2010
7696604 Silicon germanium heterostructure barrier varactor Apr. 13, 2010
7655996 MEMS structure support and release mechanism Feb. 2, 2010
7638828 Embedded capacitor Dec. 29, 2009
7619273 Varactor Nov. 17, 2009
7612424 Nanoelectromechanical bistable cantilever device Nov. 3, 2009
7579644 Adjustable on-chip sub-capacitor design Aug. 25, 2009
7579642 Gate-enhanced junction varactor Aug. 25, 2009
7569912 Differential variable capacitors and their applications Aug. 4, 2009
7560798 High performance tapered varactor Jul. 14, 2009
7525177 Controllable varactor within dummy substrate pattern Apr. 28, 2009
7518215 One mask hyperabrupt junction varactor using a compensated cathode contact Apr. 14, 2009
7518850 High yield, high density on-chip capacitor design Apr. 14, 2009
7489004 Micro-electro-mechanical variable capacitor for radio frequency applications with reduced influence of a surface roughness Feb. 10, 2009

1 2 3 4










 
 
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