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Class Information
Number: 257/655
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > With specified impurity concentration gradient
Description: Subject matter wherein the active solid-state device includes at least one region of semiconductor material with a specified profile or gradient of impurity doping concentration.










Sub-classes under this class:

Class Number Class Name Patents
257/657 Stepped profile 99
257/656 With high resistivity (e.g., "intrinsic") layer between p and n layers (e.g., pin diode) 289


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

Patent Number Title Of Patent Date Issued
8710632 Compound semiconductor epitaxial structure and method for fabricating the same Apr. 29, 2014
8710633 Semiconductor overlapped PN structure and manufacturing method thereof Apr. 29, 2014
8710542 Semiconductor device Apr. 29, 2014
8664632 Memory device Mar. 4, 2014
8637328 Integrated circuit having doped semiconductor body and method Jan. 28, 2014
8614465 Electronic device and manufacturing method Dec. 24, 2013
8575011 Method of fabricating a device with a concentration gradient and the corresponding device Nov. 5, 2013
8524586 Semiconductor overlapped PN structure and manufacturing method thereof Sep. 3, 2013
8497570 Wafer, fabricating method of the same, and semiconductor substrate Jul. 30, 2013
8487414 Multilayer select devices and methods related thereto Jul. 16, 2013
8476744 Thin film transistor with channel including microcrystalline and amorphous semiconductor regions Jul. 2, 2013
8431920 Information recording and reproducing device for high-recording density Apr. 30, 2013
8431972 Semiconductor ESD device and method of making same Apr. 30, 2013
8421195 Semiconductor devices with graded dopant regions Apr. 16, 2013
8421196 Semiconductor device and manufacturing method Apr. 16, 2013
8415773 Semiconductor component with buffer layer Apr. 9, 2013
8395244 Fast recovery diode Mar. 12, 2013
8350289 Semiconductor device Jan. 8, 2013
8314477 Deposited semiconductor structure to minimize N-type dopant diffusion and method of making Nov. 20, 2012
8299469 Thin film transistor array panel with overlapping floating electrodes and pixel electrodes Oct. 30, 2012
8299499 Field effect transistor Oct. 30, 2012
8253179 Semiconductor device and manufacturing method of the same Aug. 28, 2012
8211784 Method for manufacturing a semiconductor device with less leakage current induced by carbon implant Jul. 3, 2012
8188871 Drive current adjustment for transistors by local gate engineering May. 29, 2012
8138582 Impurity introducing apparatus having feedback mechanism using optical characteristics of impurity introducing region Mar. 20, 2012
8134224 Radio frequency semiconductor device Mar. 13, 2012
8120058 High-drive current MOSFET Feb. 21, 2012
8110897 Semiconductor device with carbon-containing region Feb. 7, 2012
8106472 Image sensor with large-area, high-sensitivity and high-speed pixels Jan. 31, 2012
8063406 Semiconductor device having a polysilicon layer with a non-constant doping profile Nov. 22, 2011
8049255 Display device and method of manufacturing the same Nov. 1, 2011
8049278 ESD protection for high voltage applications Nov. 1, 2011
8030740 Deposited semiconductor structure to minimize N-type dopant diffusion and method of making Oct. 4, 2011
7992108 Impurity concentration distribution predicting method and program for deciding impurity concentration distribution Aug. 2, 2011
7943405 Liquid crystal display device and fabricating method thereof May. 17, 2011
7936051 Silicon wafer and its manufacturing method May. 3, 2011
7880272 Semiconductor device with near-surface compensation doping area and method of fabricating Feb. 1, 2011
7875961 Semiconductor substrate of GaAs and semiconductor device Jan. 25, 2011
7838969 Diode Nov. 23, 2010
7834383 Pixel with asymmetric transfer gate channel doping Nov. 16, 2010
7807999 Array substrate, liquid crystal display apparatus having the same and method for driving liquid crystal display apparatus Oct. 5, 2010
7808174 Polymer light-emitting diode Oct. 5, 2010
7741646 Liquid crystal display device and fabricating method thereof Jun. 22, 2010
7671410 Design and fabrication of rugged FRED, power MOSFET or IGBT Mar. 2, 2010
7656011 Diode Feb. 2, 2010
7649244 Vertical semiconductor device having semiconductor zones for improved operability under dynamic processes Jan. 19, 2010
7619672 Retrograde well structure for a CMOS imager Nov. 17, 2009
7586123 Thin film transistor (TFT) array substrate and fabricating method thereof that protect the TFT and a pixel electrode without a protective film Sep. 8, 2009
7569913 Boron etch-stop layer and methods related thereto Aug. 4, 2009
7569914 Semiconductor devices and method of manufacturing them Aug. 4, 2009

1 2 3 4 5 6 7










 
 
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