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Class Information
Number: 438/276
Name: Semiconductor device manufacturing: process > Making field effect device having pair of active regions separated by gate structure by formation or alteration of semiconductive active regions > Having insulated gate (e.g., igfet, misfet, mosfet, etc.) > Making plural insulated gate field effect transistors of differing electrical characteristics > Introducing a dopant into the channel region of selected transistors
Description: Process for making plural insulated gate field effect transistors having a step of introducing an electrically active dopant species into the semiconductor channel region beneath the gate insulator of one or more transistors to produce transistors of differing electrical characteristics.

Sub-classes under this class:

Class Number Class Name Patents
438/278 After formation of source or drain regions and gate electrode (e.g., late programming, encoding, etc.) 297
438/277 Including forming overlapping gate electrodes 58

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

Patent Number Title Of Patent Date Issued
8686514 Multiple threshold voltages in field effect transistor devices Apr. 1, 2014
8643137 Short channel lateral MOSFET Feb. 4, 2014
8633075 Semiconductor device with high voltage transistor Jan. 21, 2014
RE44720 Method of manufacturing a MOSFET structure Jan. 21, 2014
8598006 Strain preserving ion implantation methods Dec. 3, 2013
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
8580637 Method of patterning a semiconductor device having improved spacing and shape control and a semiconductor device Nov. 12, 2013
8580632 Semiconductor device and method of manufacturing same Nov. 12, 2013
8574976 Semiconductor device and manufacturing method thereof Nov. 5, 2013
8574977 Method for manufacturing stack structure of PMOS device and adjusting gate work function Nov. 5, 2013
8536009 Differential threshold voltage adjustment in PMOS transistors by differential formation of a channel semiconductor material Sep. 17, 2013
8470645 Method for manufacturing an antifuse memory cell Jun. 25, 2013
8421163 Power module Apr. 16, 2013
8415215 Method of manufacturing semiconductor device with multiple implantation steps Apr. 9, 2013
8389300 Controlling ferroelectricity in dielectric films by process induced uniaxial strain Mar. 5, 2013
8384160 Semiconductor device and method of manufacturing same Feb. 26, 2013
8377772 CMOS integration method for optimal IO transistor V.sub.T Feb. 19, 2013
8377773 Transistors having a channel semiconductor alloy formed in an early process stage based on a hard mask Feb. 19, 2013
8343838 Method of reducing dislocation-induced leakage in a strained-layer field-effect transistor by implanting blocking impurity into the strained-layer Jan. 1, 2013
8298895 Selective threshold voltage implants for long channel devices Oct. 30, 2012
8283231 finFET drive strength modification Oct. 9, 2012
8278173 Method of fabricating gate structures Oct. 2, 2012
8268689 Multiple threshold voltages in field effect transistor devices Sep. 18, 2012
8263461 Lateral double diffused metal oxide semiconductor Sep. 11, 2012
8252649 Methods of fabricating semiconductor devices and structures thereof Aug. 28, 2012
8211769 Method for forming junctions of vertical cells in semiconductor device Jul. 3, 2012
8212329 Short channel lateral MOSFET and method Jul. 3, 2012
8207030 Method for producing nMOS and pMOS devices in CMOS processing Jun. 26, 2012
8193060 Method of manufacturing a semiconductor device Jun. 5, 2012
8178410 Method for fabricating a semiconductor power device May. 15, 2012
8133787 SiC semiconductor device and method for manufacturing the same Mar. 13, 2012
8133784 Method of fabricating non-volatile memory device having vertical structure Mar. 13, 2012
8114743 Integrated circuit device with a semiconductor body and method for the production of an integrated circuit device Feb. 14, 2012
8084328 Semiconductor device including I/O oxide nitrided core oxide on substrate Dec. 27, 2011
8071445 Method for manufacturing semiconductor device, and semiconductor device Dec. 6, 2011
8071451 Method of doping semiconductors Dec. 6, 2011
8048747 Method of manufacturing embedded metal-oxide-nitride-oxide-silicon memory device Nov. 1, 2011
8013381 Semiconductor device Sep. 6, 2011
8008158 Dopant implantation method using multi-step implants Aug. 30, 2011
7994012 Semiconductor device and a method of manufacturing the same Aug. 9, 2011
7989284 DRAM cell transistor device and method Aug. 2, 2011
7982274 Device comprising doped nano-component Jul. 19, 2011
7977715 LDMOS devices with improved architectures Jul. 12, 2011
7968412 Manufacturing process of a vertical-conduction MISFET device with gate dielectric structure having differentiated thickness and vertical-conduction MISFET device thus manufacture Jun. 28, 2011
7955931 Method and apparatus for fabricating a carbon nanotube transistor Jun. 7, 2011
7932153 Semiconductor device and method for fabricating the same Apr. 26, 2011
7915128 High voltage semiconductor devices Mar. 29, 2011
7910441 Multi-gate semiconductor device and method for forming the same Mar. 22, 2011
7888213 Conductive channel pseudo block process and circuit to inhibit reverse engineering Feb. 15, 2011
7867839 Method to reduce threshold voltage (Vt) in silicon germanium (SiGe), high-k dielectric-metal gate, p-type metal oxide semiconductor field effect transistors Jan. 11, 2011

1 2 3 4 5 6 7 8

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