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Class Information
Number: 257/E21.411
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 semiconductor device (epo) > Device having at least one potential-jump barrier or surface barrier, e.g., pn junction, depletion layer, carrier concentration layer (epo) > Device having semiconductor body comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) > Multi-step process for the manufacture of unipolar device (epo) > Field-effect transistor (epo) > With an insulated gate (epo) > Thin film unipolar transistor (epo)
Description: This subclass is indented under subclass E21.409. This subclass is substantially the same in scope as ECLA classification H01L21/336D.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.412 Amorphous silicon or polysilicon transistor (epo) 289
257/E21.415 Monocrystalline silicon transistor on insulating substrate, e.g., quartz substrate (epo) 902


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

Patent Number Title Of Patent Date Issued
8709836 Method for manufacturing thin film transistor and method for manufacturing display device Apr. 29, 2014
8709922 Semiconductor device Apr. 29, 2014
8710588 Implant free extremely thin semiconductor devices Apr. 29, 2014
8703549 Semiconductor device and manufacturing method thereof Apr. 22, 2014
8704230 Semiconductor device and manufacturing method thereof Apr. 22, 2014
8692252 Thin-film transistor, method of producing the same, and devices provided with the same Apr. 8, 2014
8686412 Microelectronic device Apr. 1, 2014
8680679 Semiconductor device and method for manufacturing semiconductor device Mar. 25, 2014
8673401 Gallium ink and methods of making and using same Mar. 18, 2014
8669553 Thin film transistors Mar. 11, 2014
8664060 Semiconductor structure and method of fabricating the same Mar. 4, 2014
8653601 Current control semiconductor element and control device using the same Feb. 18, 2014
8633491 Display device and manufacturing method thereof Jan. 21, 2014
8629438 Semiconductor device and manufacturing method thereof Jan. 14, 2014
8624313 Method of manufacturing semiconductor memory device Jan. 7, 2014
8623698 Method for manufacturing semiconductor device Jan. 7, 2014
8618612 Integrated circuits based on aligned nanotubes Dec. 31, 2013
8614141 Utilization of organic buffer layer to fabricate high performance carbon nanoelectronic devices Dec. 24, 2013
8614435 Utilization of organic buffer layer to fabricate high performance carbon nanoelectronic devices Dec. 24, 2013
8609476 Manufacturing method of light emitting device Dec. 17, 2013
8603899 Method of manufacturing a semiconductor device Dec. 10, 2013
8604473 Semiconductor device Dec. 10, 2013
8604470 Oxide thin film transistor and method of fabricating the same Dec. 10, 2013
8597990 Method for making thin film transistor Dec. 3, 2013
8592238 Array substrate for liquid crystal display device and method of fabricating the same Nov. 26, 2013
8592799 Graphene electronic device and method of fabricating the same Nov. 26, 2013
8586446 Manufacturing method of semiconductor device Nov. 19, 2013
8581247 Flexible semiconductor device having gate electrode disposed within an opening of a resin film Nov. 12, 2013
8580623 Thin film transistor substrate and display device including the same, and method for manufacturing thin film transistor substrate Nov. 12, 2013
8575665 Graphene electronic device and method of fabricating the same Nov. 5, 2013
8563976 Semiconductor device and manufacturing method thereof Oct. 22, 2013
8557620 Method of manufacturing a display substrate and method of manufacturing a display apparatus using the same Oct. 15, 2013
8557642 Method for providing lateral thermal processing of thin films on low-temperature substrates Oct. 15, 2013
8551824 Method for manufacturing semiconductor device Oct. 8, 2013
8546164 Method of manufacturing display device including thin film transistor Oct. 1, 2013
8541257 Aligned polymers for an organic TFT Sep. 24, 2013
8518755 Method for manufacturing semiconductor device Aug. 27, 2013
8518759 Method for producing an integrated field-effect transistor Aug. 27, 2013
8513054 Method for manufacturing semiconductor device Aug. 20, 2013
8502229 Array substrate for display device and method of fabricating the same Aug. 6, 2013
8501595 Thin film containing nanocrystal particles and method for preparing the same Aug. 6, 2013
8501556 Thin film transistor formed on flexible substrate and method of manufacturing the same Aug. 6, 2013
8501553 Method for manufacturing thin film transistor (TFT) array substrate Aug. 6, 2013
8492222 Method for forming a pixel of an organic electroluminescence device having stacked storage capacitors connecting between power supply and gate electrode Jul. 23, 2013
8492767 TFT substrate and manufacturing method thereof Jul. 23, 2013
8492768 Semiconductor device and method of fabricating the same Jul. 23, 2013
8481373 Method for manufacturing thin film transistor substrate Jul. 9, 2013
8481362 Thin film transistor and method for preparing the same Jul. 9, 2013
8476665 Display device Jul. 2, 2013
8470634 Method of manufacturing oxide thin film transistor Jun. 25, 2013

1 2 3 4 5 6 7 8 9










 
 
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