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Class Information
Number: 257/391
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Field effect device > Having insulated electrode (e.g., mosfet, mos diode) > Insulated gate field effect transistor in integrated circuit > Matrix or array of field effect transistors (e.g., array of fets only some of which are completed, or structure for mask programmed read-only memory (rom)) > Selected groups of complete field effect devices having different threshold voltages (e.g., different channel dopant concentrations)
Description: Subject matter wherein selected groups of complete IGFETs have different threshold voltages above which the IGFETs will operate (e.g., different IGFETs have different current carrying channel impurity dopant concentrations).

Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8680623 Techniques for enabling multiple V.sub.t devices using high-K metal gate stacks Mar. 25, 2014
8653601 Current control semiconductor element and control device using the same Feb. 18, 2014
8643100 Field effect transistor having multiple effective oxide thicknesses and corresponding multiple channel doping profiles Feb. 4, 2014
8643116 Semiconductor device Feb. 4, 2014
8629489 Nonvolatile memory devices Jan. 14, 2014
8598005 Method and manufacture for embedded flash to achieve high quality spacers for core and high voltage devices and low temperature spacers for high performance logic devices Dec. 3, 2013
8592898 Vertical gated access transistor Nov. 26, 2013
8580632 Semiconductor device and method of manufacturing same Nov. 12, 2013
8546881 Semiconductor device Oct. 1, 2013
8513739 Metal-gate high-k reference structure Aug. 20, 2013
8507958 Transistor and method for forming the same Aug. 13, 2013
8492875 Nonvolatile memory element having a tantalum oxide variable resistance layer Jul. 23, 2013
8476708 Semiconductor memory device having a circuit formed on a single crystal semiconductor layer with varied germanium concentration Jul. 2, 2013
8471320 Memory layout structure Jun. 25, 2013
8466519 Read-only memory device with contacts formed therein Jun. 18, 2013
8450809 Semiconductor device for applying common source lines with individual bias voltages May. 28, 2013
8421161 Semiconductor device and fabrication method Apr. 16, 2013
8384160 Semiconductor device and method of manufacturing same Feb. 26, 2013
8304300 Method of manufacturing display device including transistor Nov. 6, 2012
8283231 finFET drive strength modification Oct. 9, 2012
8237220 Semiconductor device with vertical channel transistor Aug. 7, 2012
8212322 Techniques for enabling multiple V.sub.t devices using high-K metal gate stacks Jul. 3, 2012
8178932 Semiconductor device having transistors May. 15, 2012
8125015 Nonvolatile memory devices Feb. 28, 2012
8114739 Semiconductor device with oxygen-diffusion barrier layer and method for fabricating same Feb. 14, 2012
8110878 Semiconductor device having a plurality of shallow wells Feb. 7, 2012
8106463 Memory cells for read only memories Jan. 31, 2012
8102007 Apparatus for trimming high-resolution digital-to-analog converter Jan. 24, 2012
8043916 Method of fabricating semiconductor device having multiple gate insulating layer Oct. 25, 2011
8004048 Semiconductor device having a buried gate that can realize a reduction in gate-induced drain leakage (GIDL) and method for manufacturing the same Aug. 23, 2011
7999331 Semiconductor device and method of fabricating the same Aug. 16, 2011
7989897 Semiconductor device Aug. 2, 2011
7982274 Device comprising doped nano-component Jul. 19, 2011
7960786 Breakdown voltages of ultra-high voltage devices by forming tunnels Jun. 14, 2011
7952149 Anti-halo compensation May. 31, 2011
7951678 Metal-gate high-k reference structure May. 31, 2011
7939898 Diffusion variability control and transistor device sizing using threshold voltage implant May. 10, 2011
7915589 Imaging apparatus, imaging system, its controlling method, and storage medium storing its program Mar. 29, 2011
7910444 Process for forming differential spaces in electronics device integrated on a semiconductor substrate Mar. 22, 2011
7893503 Semiconductor device comprising NMOS and PMOS transistors with embedded Si/Ge material for creating tensile and compressive strain Feb. 22, 2011
7880202 Modulated-Vt transistor Feb. 1, 2011
7867840 Semiconductor device and method of fabricating the same Jan. 11, 2011
7825457 Semiconductor device and manufacturing method therefor Nov. 2, 2010
7812408 Integrated circuits with metal-oxide-semiconductor transistors having enhanced gate depletion layers Oct. 12, 2010
7804133 Semiconductor storage device and manufacturing method thereof Sep. 28, 2010
7790517 Method of manufacturing semiconductor device Sep. 7, 2010
7777256 Mask ROM device, semiconductor device including the mask ROM device, and methods of fabricating mask ROM device and semiconductor device Aug. 17, 2010
7776761 Method of fabricating semiconductor device having multiple gate insulating layer Aug. 17, 2010
7772655 Semiconductor device and method of fabricating the same Aug. 10, 2010
7767567 Method of forming a semiconductor memory device and semiconductor memory device Aug. 3, 2010

1 2 3 4 5 6 7 8 9

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