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Class Information
Number: 257/E21.655
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of devices consisting of plurality of solid-state components formed in or on common substrate or of parts thereof; manufacture of integrated circuit devices or of parts thereof (epo) > Manufacture or treatment of devices consisting of plurality of solid-state components or integrated circuits formed in, or on, common substrate (epo) > With subsequent division of substrate into plural individual devices (epo) > To produce devices each consisting of plurality of components, e.g., integrated circuits (epo) > Substrate being semiconductor, using silicon technology (epo) > Field-effect technology (epo) > Mis technology (epo) > Dynamic random access memory structures (dram) (epo) > Characterized by type of capacitor (epo) > Characterized by type of transistor; manufacturing of transistor (epo) > Transistor in u- or v-shaped trench in substrate (epo)
Description: This subclass is indented under subclass E21.654. This subclass is substantially the same in scope as ECLA classification H01L21/8242C2.










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

Patent Number Title Of Patent Date Issued
8680610 Trench MOSFET having floating dummy cells for avalanche improvement Mar. 25, 2014
8658498 Single mask spacer technique for semiconductor device features Feb. 25, 2014
8652901 Single-mask spacer technique for semiconductor device features Feb. 18, 2014
8633073 Method of forming semiconductor device Jan. 21, 2014
8610205 Inter-poly dielectric in a shielded gate MOSFET device Dec. 17, 2013
8581346 Semiconductor memory device Nov. 12, 2013
8569134 Method to fabricate a closed cell trench power MOSFET structure Oct. 29, 2013
8552535 Trench shielding structure for semiconductor device and method Oct. 8, 2013
8541826 Memory array structure and method for forming the same Sep. 24, 2013
8524559 Manufacturing method of power transistor device Sep. 3, 2013
8518812 Methods of forming electrical contacts Aug. 27, 2013
8497173 Semiconductor device and method for manufacturing the same Jul. 30, 2013
8497551 Self-aligned contact for trench MOSFET Jul. 30, 2013
8476701 Semiconductor device with gate electrode including a concave portion Jul. 2, 2013
8431457 Method for fabricating a shielded gate trench MOS with improved source pickup layout Apr. 30, 2013
8426910 Semiconductor device for use in a power supply circuit and having a power MOSFET and Schottky barrier diode Apr. 23, 2013
8405089 Semiconductor memory device and manufacturing method thereof Mar. 26, 2013
8372710 Vertical transistors Feb. 12, 2013
8314471 Trench devices having improved breakdown voltages and method for manufacturing same Nov. 20, 2012
8298892 Fabricating method of insulator Oct. 30, 2012
8283714 Semiconductor memory device having vertical channel transistor and method for fabricating the same Oct. 9, 2012
8258065 Passive elements, articles, packages, semiconductor composites, and methods of manufacturing same Sep. 4, 2012
8193578 Power supply circuit having a semiconductor device including a MOSFET and a Schottky junction Jun. 5, 2012
8153489 Method for fabricating semiconductor device with buried gates Apr. 10, 2012
8148796 Solar cell and manufacturing method thereof Apr. 3, 2012
8143670 Self aligned field effect transistor structure Mar. 27, 2012
8143125 Structure and method for forming a salicide on the gate electrode of a trench-gate FET Mar. 27, 2012
8143124 Methods of making power semiconductor devices with thick bottom oxide layer Mar. 27, 2012
8129241 Method for forming a shielded gate trench FET Mar. 6, 2012
8129251 Metal-insulator-metal-structured capacitor formed with polysilicon Mar. 6, 2012
8119486 Methods of manufacturing semiconductor devices having a recessed-channel Feb. 21, 2012
8067286 Methods of forming recessed access devices associated with semiconductor constructions Nov. 29, 2011
8058685 Trench MOSFET structures using three masks process Nov. 15, 2011
8043913 Method of forming trench-gate field effect transistors Oct. 25, 2011
8039895 Transistors having a channel region between channel-portion holes and methods of forming the same Oct. 18, 2011
8039896 Semiconductor memory device with vertical channel formed on semiconductor pillars Oct. 18, 2011
8022457 Semiconductor memory device having vertical channel transistor and method for fabricating the same Sep. 20, 2011
8008151 Shallow source MOSFET Aug. 30, 2011
8008714 Semiconductor device including a MOSFET and a Schottky junction Aug. 30, 2011
7964488 Semiconductor device and method for fabricating the same Jun. 21, 2011
7951677 Corner rounding in a replacement gate approach based on a sacrificial fill material applied prior to work function metal deposition May. 31, 2011
7923334 Method for fabricating semiconductor device having vertical-type channel Apr. 12, 2011
7915692 Semiconductor structure including gateline surrounding source and drain pillars Mar. 29, 2011
7910479 Method of manufacturing a photodiode array with through-wafer vias Mar. 22, 2011
7897460 Methods of forming recessed access devices associated with semiconductor constructions Mar. 1, 2011
7867833 Semiconductor device utilizing a metal gate material such as tungsten and method of manufacturing the same Jan. 11, 2011
7829946 Semiconductor device Nov. 9, 2010
7824982 DRAM arrays, vertical transistor structures, and methods of forming transistor structures and DRAM arrays Nov. 2, 2010
7816720 Trench MOSFET structure having improved avalanche capability using three masks process Oct. 19, 2010
7795094 Recessed gate dielectric antifuse Sep. 14, 2010

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