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Class Information
Number: 438/133
Name: Semiconductor device manufacturing: process > Making regenerative-type switching device (e.g., scr, igbt, thyristor, etc.)
Description: Process for making a switching device structure acting as if it has two or more active emitter junctions each of which is associated with a separate, equivalent transistor having an individual gain and which, when initiated by a base region current, causes the equivalent transistors to mutually drive each other in a regenerative manner to lower the voltage drop between emitter regions.

Sub-classes under this class:

Class Number Class Name Patents
438/139 Altering electrical characteristic 99
438/134 Bidirectional rectifier with control electrode (e.g., triac, diac, etc.) 72
438/135 Having field effect structure 210
438/140 Having structure increasing breakdown voltage (e.g., guard ring, field plate, etc.) 214

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8703547 Thyristor comprising a special doped region characterized by an LDD region and a halo implant Apr. 22, 2014
8691634 Optically triggered semiconductor device and method for making the same Apr. 8, 2014
8685800 Single event latch-up prevention techniques for a semiconductor device Apr. 1, 2014
8664690 Bi-directional triode thyristor for high voltage electrostatic discharge protection Mar. 4, 2014
8659035 Light-emitting device, light-emitting device array, optical recording head, image forming apparatus, and method of manufacturing light-emitting device Feb. 25, 2014
8659052 Semiconductor device and method for manufacturing the same Feb. 25, 2014
8643085 High-voltage-resistant semiconductor component having vertically conductive semiconductor body areas and a trench structure Feb. 4, 2014
8604515 Bidirectional protection component Dec. 10, 2013
8592860 Apparatus and method for protection of electronic circuits operating under high stress conditions Nov. 26, 2013
8587113 Thermal plate with planar thermal zones for semiconductor processing Nov. 19, 2013
8586423 Silicon controlled rectifier with stress-enhanced adjustable trigger voltage Nov. 19, 2013
8569117 Systems and methods integrating trench-gated thyristor with trench-gated rectifier Oct. 29, 2013
8569881 Semiconductor device Oct. 29, 2013
8557640 Low voltage PNPN protection device Oct. 15, 2013
8535992 Thyristor random access memory device and method Sep. 17, 2013
8525297 Confinement techniques for non-volatile resistive-switching memories Sep. 3, 2013
8524543 Thyristor-based memory cells, devices and systems including the same and methods for forming the same Sep. 3, 2013
8513639 Resistive-switching memory and fabrication method thereof Aug. 20, 2013
8492792 Semiconductor device and manufacturing method thereof Jul. 23, 2013
8470646 Modulation of resistivity in carbon-based read-writeable materials Jun. 25, 2013
8466005 Method for forming metal oxides and silicides in a memory device Jun. 18, 2013
8461620 Laser pumping of thyristors for fast high current rise-times Jun. 11, 2013
8461674 Thermal plate with planar thermal zones for semiconductor processing Jun. 11, 2013
8455306 Methods of forming voltage limiting devices Jun. 4, 2013
8455919 High density thyristor random access memory device and method Jun. 4, 2013
8384125 Structure and method for a silicon controlled rectifier (SCR) structure for SOI technology Feb. 26, 2013
8377754 Stress enhanced junction engineering for latchup SCR Feb. 19, 2013
8357952 Power semiconductor structure with field effect rectifier and fabrication method thereof Jan. 22, 2013
8354722 SCR/MOS clamp for ESD protection of integrated circuits Jan. 15, 2013
8343813 Resistive-switching memory elements having improved switching characteristics Jan. 1, 2013
8344448 Semiconductor device having an edge termination structure and method of manufacture thereof Jan. 1, 2013
8330184 Bidirectional voltage-regulator diode Dec. 11, 2012
8305722 Dual-directional electrostatic discharge protection method Nov. 6, 2012
8299533 Vertical NPNP structure in a triple well CMOS process Oct. 30, 2012
8294242 Confinement techniques for non-volatile resistive-switching memories Oct. 23, 2012
8294244 Semiconductor device having an enlarged emitter electrode Oct. 23, 2012
8278682 Semiconductor device Oct. 2, 2012
8278715 Electrostatic discharge protection device Oct. 2, 2012
8242537 IGBT with fast reverse recovery time rectifier and manufacturing method thereof Aug. 14, 2012
8236624 Method for producing a thyristor Aug. 7, 2012
8236623 Memory cell that employs a selectively fabricated carbon nano-tube reversible resistance-switching element and methods of forming the same Aug. 7, 2012
8237147 Switching element and manufacturing method thereof Aug. 7, 2012
8207519 Ionic-modulated dopant profile control in nanoscale switching devices Jun. 26, 2012
8198144 Pillar structure for memory device and method Jun. 12, 2012
8153481 Semiconductor power device with passivation layers Apr. 10, 2012
8145020 Semiconductor device Mar. 27, 2012
8129788 Capacitor triggered silicon controlled rectifier Mar. 6, 2012
8093622 Semiconductor device and its driving method Jan. 10, 2012
8093107 Thyristor semiconductor memory and method of manufacture Jan. 10, 2012
8081850 Device with tunable plasmon resonance Dec. 20, 2011

1 2 3 4 5 6

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