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Class Information
Number: 257/402
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Field effect device > Having insulated electrode (e.g., mosfet, mos diode) > With permanent threshold adjustment (e.g., depletion mode)
Description: Subject matter wherein the device includes means for permanently adjusting the threshold voltage at which the device conducts (e.g., depletion mode IGFETs).

Sub-classes under this class:

Class Number Class Name Patents
257/403 With channel conductivity dopant same type as that of source and drain 170
257/407 With gate electrode of controlled workfunction material (e.g., low workfunction gate material) 356
257/405 With gate insulator containing specified permanent charge 96

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8710538 Light-emitting device with a spacer at bottom surface Apr. 29, 2014
8686511 Source/drain extension control for advanced transistors Apr. 1, 2014
8680609 Depletion mode semiconductor device with trench gate and manufacturing method thereof Mar. 25, 2014
8674419 Method of forming a CMOS structure having gate insulation films of different thicknesses Mar. 18, 2014
8674455 Semiconductor device Mar. 18, 2014
8664060 Semiconductor structure and method of fabricating the same Mar. 4, 2014
8664067 CMOS devices with reduced short channel effects Mar. 4, 2014
8664054 Method for forming semiconductor structure Mar. 4, 2014
8653565 Mixed mode multiple switch integration of multiple compound semiconductor FET devices Feb. 18, 2014
8643117 Semiconductor device, method for manufacturing same, and semiconductor storage device Feb. 4, 2014
8643106 Semiconductor device Feb. 4, 2014
8637385 High voltage durability transistor and method for fabricating same Jan. 28, 2014
8637938 Semiconductor device with pocket regions and method of manufacturing the same Jan. 28, 2014
8598595 Semiconductor device and method for manufacturing the same Dec. 3, 2013
8592921 Deep trench embedded gate transistor Nov. 26, 2013
8587075 Tunnel field-effect transistor with metal source Nov. 19, 2013
8581349 3D memory semiconductor device and structure Nov. 12, 2013
8575012 Semiconductor device production method and semiconductor device Nov. 5, 2013
8575708 Structure of field effect transistor with fin structure Nov. 5, 2013
8563384 Source/drain extension control for advanced transistors Oct. 22, 2013
8530286 Low power semiconductor transistor structure and method of fabrication thereof Sep. 10, 2013
8518784 Adjusting of strain caused in a transistor channel by semiconductor material provided for threshold adjustment Aug. 27, 2013
8508001 Semiconductor device with work function adjusting layer having varied thickness in a gate width direction and methods of making same Aug. 13, 2013
8426927 Penetrating implant for forming a semiconductor device Apr. 23, 2013
8420456 Method of manufacturing for thin film transistor Apr. 16, 2013
8421162 Advanced transistors with punch through suppression Apr. 16, 2013
8410557 Semiconductor device and method of manufacturing the same Apr. 2, 2013
8404551 Source/drain extension control for advanced transistors Mar. 26, 2013
8405165 Field effect transistor having multiple conduction states Mar. 26, 2013
8389350 Semiconductor device and method for manufacturing the same in which variations are reduced and characteristics are improved Mar. 5, 2013
8354718 Semiconductor device including an arrangement for suppressing short channel effects Jan. 15, 2013
8338892 Strain enhancement in transistors comprising an embedded strain-inducing semiconductor alloy by corner rounding at the top of the gate electrode Dec. 25, 2012
8330232 Nonvolatile memory device and method of forming the same Dec. 11, 2012
8304835 Configuration and fabrication of semiconductor structure using empty and filled wells Nov. 6, 2012
8304843 Tunnel field effect transistor with improved subthreshold swing Nov. 6, 2012
8299545 Method and structure to improve body effect and junction capacitance Oct. 30, 2012
8294217 Semiconductor device and method of manufacturing semiconductor device Oct. 23, 2012
8268689 Multiple threshold voltages in field effect transistor devices Sep. 18, 2012
8247875 Fabrication method of semiconductor device Aug. 21, 2012
8217470 Field effect device including recessed and aligned germanium containing channel Jul. 10, 2012
8188553 Semiconductor device and method for making the same May. 29, 2012
8178862 Junctionless metal-oxide-semiconductor transistor May. 15, 2012
8169039 Semiconductor device May. 1, 2012
8143130 Method of manufacturing depletion MOS device Mar. 27, 2012
8133790 Semiconductor device and method for fabricating the same Mar. 13, 2012
8093664 Non-volatile semiconductor memory device and depletion-type MOS transistor Jan. 10, 2012
8085594 Reading technique for memory cell with electrically floating body transistor Dec. 27, 2011
8026551 Source follower circuit or bootstrap circuit, driver circuit comprising such circuit, and display device comprising such driver circuit Sep. 27, 2011
8022486 CMOS semiconductor device Sep. 20, 2011
8022487 Increasing body dopant uniformity in multi-gate transistor devices Sep. 20, 2011

1 2 3 4 5 6 7

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