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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
8426868 Semiconductor device and method for manufacturing the same Apr. 23, 2013
8426863 Thin film transistor; method of manufacturing same; and organic light emitting device including the thin film transistor Apr. 23, 2013
8421155 Semiconductor device and method of manufacturing semiconductor device Apr. 16, 2013
8421096 Pixel structure and display panel Apr. 16, 2013
8421080 Thin-film transistor array device, organic EL display device, and method of manufacturing thin-film transistor array device Apr. 16, 2013
8420513 Method of fabricating thin film transistor Apr. 16, 2013
8420465 Organic thin film transistor manufacturing method and organic thin film transistor Apr. 16, 2013
8420420 Method of manufacturing thin film transistor array substrate and structure thereof Apr. 16, 2013
8415672 Transistor with etching stop layer and manufacturing method thereof Apr. 9, 2013
8415673 Thin film transistor and semiconductor layer Apr. 9, 2013
8409934 Methods for forming materials using micro-heaters and electronic devices including such materials Apr. 2, 2013
8410481 Pixel structure and pixel structure of organic light emitting device Apr. 2, 2013
8405088 Thin film transistor and organic light emitting diode display device Mar. 26, 2013
8405086 Pixel structure of display panel and method for manufacturing the same Mar. 26, 2013
8405085 Thin film transistor capable of reducing photo current leakage Mar. 26, 2013
8405082 Thin film transistor array substrate and manufacturing method thereof Mar. 26, 2013
8405081 Organic thin film transistor having peripheral metal structures Mar. 26, 2013
8399885 Thin film transistor substrate and flat panel display apparatus Mar. 19, 2013
8384080 Thin film transistor, display device, and electronic device Feb. 26, 2013
8384084 Semiconductor thin film and semiconductor device Feb. 26, 2013
8384087 Thin film transistor, organic light emitting diode display device having the same, and method of fabricating the same Feb. 26, 2013
8368067 Oxide semiconductor device with oxide semiconductor layers of different oxygen concentrations and method of manufacturing the same Feb. 5, 2013
8362491 Liquid crystal display device and method for fabricating the same Jan. 29, 2013
8354672 Thin film transistor array panel Jan. 15, 2013
8354674 Semiconductor device wherein a property of a first semiconductor layer is different from a property of a second semiconductor layer Jan. 15, 2013
8344390 Thin film active element group, thin film active element array, organic light emitting device, display apparatus, and thin film active element manufacturing method Jan. 1, 2013
8329517 Pixel structure and method for manufacturing the same Dec. 11, 2012
8330257 Thin film transistor substrate, method of manufacturing the same, and display apparatus having the same Dec. 11, 2012
8324629 Organic light emitting display device and method of manufacturing the same Dec. 4, 2012
8324620 Semiconductor device having oxide semiconductor layer Dec. 4, 2012
8324618 Light emitting device Dec. 4, 2012
8318551 Semiconductor device and manufacturing method thereof Nov. 27, 2012
8314428 Thin film transistor with LDD/offset structure Nov. 20, 2012
8309964 Thin film transistor, method of manufacturing the thin film transistor and organic light emitting display device having the thin film transistor Nov. 13, 2012
8310009 Display apparatus Nov. 13, 2012
8304776 Thin film transistor substrate and method for fabricating the same Nov. 6, 2012
8299558 Self-aligned Schottky diode Oct. 30, 2012
8299516 Vertical thin film transistor and method for manufacturing the same and display device including the vertical thin film transistor and method for manufacturing the same Oct. 30, 2012
8299466 Thin film transistors having multiple doped silicon layers Oct. 30, 2012
8294150 Panel structure including transistor and connecting elements, display device including the same, and methods of manufacturing panel structure and display device Oct. 23, 2012
8288832 Semiconductor devices including a layer of polycrystalline silicon having a smooth morphology Oct. 16, 2012
8288774 Dual gate layout for thin film transistor Oct. 16, 2012
8278161 Method for fabricating a thin film transistor array substrate with a thinned protective film over a storage capacitor Oct. 2, 2012
8274077 Semiconductor device and manufacturing method thereof Sep. 25, 2012
8269217 Display unit with thin film transistor having through holes in source/drain electrode Sep. 18, 2012
8263982 Thin film transistor with a high impurity region overlapping the gate electrode Sep. 11, 2012
8258023 Thin film transistor and method for preparing the same Sep. 4, 2012
8253174 Electronic circuit structure and method for forming same Aug. 28, 2012
8242502 TFT array substrate having conductive layers containing molybdenum nitride and copper alloy Aug. 14, 2012
8242503 Multi-gate thin film transistor device Aug. 14, 2012

1 2 3 4 5 6 7 8

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