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Class Information
Number: 257/E29.273
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductors devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (epo) > Types of semiconductor device (epo) > Controllable by only signal applied to control electrode (e.g., base of bipolar transistor, gate of field-effect transistor) (epo) > Unipolar device (epo) > Field-effect transistor (epo) > With field effect produced by insulated gate (epo) > Thin-film transistor (epo)
Description: This subclass is indented under subclass E29.255. This subclass is substantially the same in scope as ECLA classification H01L29/786.

Sub-classes under this class:

Class Number Class Name Patents
257/E29.295 Characterized by insulating substrate or support (epo) 323
257/E29.299 Characterized by property or structure of channel or contact thereto (epo) 768
257/E29.296 Comprising group iii-v or ii-vi compound, or of se, te, or oxide semiconductor (epo) 235
257/E29.297 Comprising group iv non-si semiconductor materials or alloys (e.g., ge, sin alloy, sic alloy) (epo) 202
257/E29.285 Silicon transistor (epo) 33
257/E29.274 Vertical transistor (epo) 208
257/E29.275 With multiple gates (epo) 719
257/E29.276 With supplementary region or layer in thin film or in insulated bulk substrate supporting it for controlling or increasing voltage resistance of device (epo) 87

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

Patent Number Title Of Patent Date Issued
8237164 Semiconductor device including magnet Aug. 7, 2012
8232551 Channel layers and semiconductor devices including the same Jul. 31, 2012
8232552 Noncrystalline oxide semiconductor thin film, process for producing the noncrystalline oxide semiconductor thin film, process for producing thin-film transistor, field-effect-transistor, light Jul. 31, 2012
8222647 Method for making semiconductor apparatus and semiconductor apparatus obtained by the method, method for making thin film transistor substrate and thin film transistor substrate obtained by th Jul. 17, 2012
8207538 Thin film transistor Jun. 26, 2012
8198657 Thin film transistor array panel and method for manufacturing the same Jun. 12, 2012
8193588 Semiconductor device Jun. 5, 2012
8188518 Thin film transistor structure of pixel with drain extensions overlapping gate electrode and gate electrode extention May. 29, 2012
8188577 Production method of semiconductor device, semiconductor device, and exposure apparatus May. 29, 2012
8178882 Buffer layer for promoting electron mobility and thin film transistor having the same May. 15, 2012
8178881 Array substrate for liquid crystal display device and fabrication method thereof May. 15, 2012
8164095 Semiconductor device wherein a property of a first semiconductor layer is different from a property of a second semiconductor layer Apr. 24, 2012
8158984 Thin film transistor, method of fabricating the same, and organic light emitting diode display device including the same Apr. 17, 2012
8158985 Thin film transistor devices with different electrical characteristics and method for fabricating the same Apr. 17, 2012
8154024 Field effect transistor using amorphous oxide film as channel layer, manufacturing method of field effect transistor using amorphous oxide film as channel layer, and manufacturing method of am Apr. 10, 2012
8138032 Method for manufacturing thin film transistor having microcrystalline semiconductor film Mar. 20, 2012
8134202 Capacitorless one-transistor semiconductor memory device having improved data retention abilities and operation characteristics Mar. 13, 2012
8134154 Thin film transistor and display Mar. 13, 2012
8134152 CMOS thin film transistor, method of fabricating the same and organic light emitting display device having laminated PMOS poly-silicon thin film transistor with a top gate configuration and a Mar. 13, 2012
8129720 Double self-aligned metal oxide TFT Mar. 6, 2012
8120029 Thin film transistor and method of manufacturing the same Feb. 21, 2012
8115209 Dual gate layout for thin film transistor Feb. 14, 2012
8106464 Semiconductor device having bar type active pattern Jan. 31, 2012
8093593 Semiconductor device having multichannel transistor Jan. 10, 2012
8093589 Semiconductor device with an active layer containing zinc oxide, manufacturing method, and electronic device Jan. 10, 2012
8089071 Thin film semiconductor device having crystal grain boundaries cyclically traversing a channel part and method for manufacturing same Jan. 3, 2012
8080845 Semiconductor device Dec. 20, 2011
8067774 Thin film transistor panel and method of manufacturing the same Nov. 29, 2011
8058652 Semiconductor device used as electro-optical device having channel formation region containing first element, and source or drain region containing second element Nov. 15, 2011
8053760 Thin film transistor Nov. 8, 2011
8053778 Semiconductor device and a method for manufacturing the same Nov. 8, 2011
8048698 Thin film transistor array substrate and method for manufacturing the same Nov. 1, 2011
8039840 Display device and method for manufacturing the same Oct. 18, 2011
8035101 Transistor, semiconductor device including a transistor and methods of manufacturing the same Oct. 11, 2011
8026520 Thin film transistor, method of fabricating the same, and organic light emitting diode display device having the thin film transistor Sep. 27, 2011
8026522 Thin film transistor array panel and method for manufacturing the same, and liquid crystal display Sep. 27, 2011
8026561 Spin MOSFET and reconfigurable logic circuit Sep. 27, 2011
8022410 Thin film transistors Sep. 20, 2011
8017459 Method of fabricating a thin film transistor array substrate Sep. 13, 2011
8017979 Semiconductor device and method for manufacturing the same Sep. 13, 2011
8013341 Organic light-emitting display device Sep. 6, 2011
7999262 Thin film transistor, method of fabricating the same, and method of fabricating liquid crystal display device having the same Aug. 16, 2011
7994508 Thin film transistors using thin film semiconductor materials Aug. 9, 2011
7989893 SOI body contact using E-DRAM technology Aug. 2, 2011
7977173 Silicon thin film transistors, systems, and methods of making same Jul. 12, 2011
7973315 Thin film transistor, flat panel display device therewith, and method of manufacturing the thin film transistor Jul. 5, 2011
7973364 Method for forming a one-transistor memory cell and related structure Jul. 5, 2011
7968388 Thin-film device, method for manufacturing thin-film device, and display Jun. 28, 2011
7968389 Fabrication methods of thin film transistor substrates Jun. 28, 2011
7960792 Non-volatile memory with a stable threshold voltage on SOI substrate Jun. 14, 2011

1 2 3 4 5 6 7 8

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