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Class Information
Number: 257/57
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Non-single crystal, or recrystallized, semiconductor material forms part of active junction (including field-induced active junction) > Amorphous semiconductor material > Field effect device in amorphous semiconductor material
Description: Subject matter wherein the amorphous semiconductor active junction is a field effect device, i.e., one which has a conducting channel and two or more electrodes, one of which is denoted a source and the other a drain electrode, and in which the current through the conducting channel is controlled by an electric field coming from a voltage which is applied between the gate and source terminals thereof.

Sub-classes under this class:

Class Number Class Name Patents
257/59 In array having structure for use as imager or display, or with transparent electrode 3,952
257/60 With field electrode under or on a side edge of amorphous semiconductor material (e.g., vertical current path) 175
257/61 With heavily doped regions contacting amorphous semiconductor material (e.g., heavily doped source and drain) 185
257/58 With impurity other than hydrogen to passivate dangling bonds (e.g., halide) 81

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8709920 Method for manufacturing semiconductor device Apr. 29, 2014
8704216 Semiconductor device and manufacturing method thereof Apr. 22, 2014
8704217 Field effect transistor, semiconductor device and semiconductor device manufacturing method Apr. 22, 2014
8704220 Active device Apr. 22, 2014
8704229 Partial poly amorphization for channeling prevention Apr. 22, 2014
8704230 Semiconductor device and manufacturing method thereof Apr. 22, 2014
8692249 Power storage device Apr. 8, 2014
8692238 Semiconductor devices and methods of preparation Apr. 8, 2014
8680522 Oxide semiconductor film and semiconductor device Mar. 25, 2014
8680525 Thin film transistor and manufacturing method thereof Mar. 25, 2014
8680526 Electronic device, method of producing the same, and display device Mar. 25, 2014
8680528 Light-emitting device Mar. 25, 2014
8674972 Semiconductor device Mar. 18, 2014
8674359 TFT, array substrate for display apparatus including TFT, and methods of manufacturing TFT and array substrate Mar. 18, 2014
8674351 Semiconductor device and semiconductor memory device Mar. 18, 2014
8674360 Semiconductor device having first gate electrode and second gate electrode Mar. 18, 2014
8669556 Semiconductor device Mar. 11, 2014
8664700 Bio material receiving device and methods of manufacturing and operating the same Mar. 4, 2014
8664658 Semiconductor device Mar. 4, 2014
8664661 Thin film transistor, method of fabricating thin film transistor and pixel structure Mar. 4, 2014
8659094 Array substrate for liquid crystal display device and method of fabricating the same Feb. 25, 2014
8653533 Semiconductor device and method of manufacturing the same Feb. 18, 2014
8653512 Thin film transistor compositions, and methods relating thereto Feb. 18, 2014
8653527 Thin film transistor and method for manufacturing the same Feb. 18, 2014
8653523 Thin-film transistor forming substrate, semiconductor device, and electric apparatus Feb. 18, 2014
8653521 Liquid crystal display array substrate and method for manufacturing the same Feb. 18, 2014
8653520 Semiconductor device and method for manufacturing the same Feb. 18, 2014
8643021 Semiconductor device including multiple insulating films Feb. 4, 2014
8637864 Semiconductor device and method of manufacturing the same Jan. 28, 2014
8637866 Thin film transistor Jan. 28, 2014
8633485 Display device and manufacturing method thereof Jan. 21, 2014
8633484 Organic light emitting display and method of fabricating the same Jan. 21, 2014
8629437 Semiconductor device and manufacturing method thereof Jan. 14, 2014
8629438 Semiconductor device and manufacturing method thereof Jan. 14, 2014
8629439 Light emitting device, method of preparing the same and device for fabricating the same Jan. 14, 2014
8629445 Semiconductor device, manufacturing method thereof, and electronic appliance Jan. 14, 2014
8624252 Substrate having film pattern and manufacturing method of the same, manufacturing method of semiconductor device, liquid crystal television, and el television Jan. 7, 2014
8624244 Thin film transistor including a light-transmitting semiconductor film and active matrix substrate Jan. 7, 2014
8624239 Semiconductor device Jan. 7, 2014
8624238 Thin-film transistor substrate and method of fabricating the same Jan. 7, 2014
8618543 Thin film transistor including selectively crystallized channel layer and method of manufacturing the thin film transistor Dec. 31, 2013
8618544 Thin film transistor and display device Dec. 31, 2013
8614445 Alkylsilane laminate, production method thereof and thin-film transistor Dec. 24, 2013
8610652 Display apparatuses and methods of operating the same Dec. 17, 2013
8604476 Semiconductor device including memory cell Dec. 10, 2013
8586984 Organic light-emitting display device and method of manufacturing the same Nov. 19, 2013
8581254 Photodetector having improved quantum efficiency Nov. 12, 2013
8581252 Active device array substrate, color filter substrate and manufacturing methods thereof Nov. 12, 2013
8581243 Thin-film transistor and process for its fabrication Nov. 12, 2013
8580695 Method of fabricating a semiconductor device Nov. 12, 2013

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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