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Class Information
Number: 257/E21.135
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) > Diffusion of impurity material, e.g., doping material, electrode material, into or out of a semiconductor body, or between semiconductor regions; interactions between two or more impurities; redistribution of impurities (epo)
Description: This subclass is indented under subclass E21.085. This subclass is substantially the same in scope as ECLA classification H01L21/22.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.14 Diffusion source (epo) 67
257/E21.136 From the substrate during epitaxy, e.g., autodoping; preventing or using autodoping (epo) 67
257/E21.139 Lithium-drift (epo) 3
257/E21.137 To control carrier lifetime, i.e., deep level dopant (epo) 43
257/E21.144 Using diffusion into or out of a s olid from or into a solid phase, e.g., a doped oxide layer (epo) 41
257/E21.141 Using diffusion into or out of a solid from or into a gaseous phase (epo) 153
257/E21.153 Using diffusion into or out of a solid from or into a liquid phase, e.g., alloy diffusion process (epo) 24


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8703582 Laser processing method Apr. 22, 2014
8669187 Porous lift-off layer for selective removal of deposited films Mar. 11, 2014
8658477 Method for manufacturing a semiconductor device Feb. 25, 2014
8659110 Single-junction photovoltaic cell Feb. 25, 2014
8652953 Plasma doping method with gate shutter Feb. 18, 2014
8653628 Power semiconductor device and method of manufacturing the same Feb. 18, 2014
8633097 Single-junction photovoltaic cell Jan. 21, 2014
8629046 Semiconductor device with a dislocation structure and method of forming the same Jan. 14, 2014
8629031 Method for manufacturing SOI substrate and semiconductor device Jan. 14, 2014
8629026 Source tip optimization for high voltage transistor devices Jan. 14, 2014
8623688 Solar cell and method for manufacturing such a solar cell Jan. 7, 2014
8592894 Method of forming a power semiconductor device and power semiconductor device Nov. 26, 2013
8575010 Method for fabricating a semiconductor substrate Nov. 5, 2013
8569158 Method for forming ultra-shallow doping regions by solid phase diffusion Oct. 29, 2013
8569831 Integrated circuit arrays and semiconductor constructions Oct. 29, 2013
8564099 Semiconductor structure and a method for manufacturing the same Oct. 22, 2013
8524559 Manufacturing method of power transistor device Sep. 3, 2013
8513642 Patterned doping of semiconductor substrates using photosensitive monolayers Aug. 20, 2013
8513754 Solar cell, method of forming emitter layer of solar cell, and method of manufacturing solar cell Aug. 20, 2013
8508016 Bipolar punch-through semiconductor device and method for manufacturing such a semiconductor device Aug. 13, 2013
8501586 Power semiconductor Aug. 6, 2013
8497205 Semiconductor device manufacturing method, wiring and semiconductor device Jul. 30, 2013
8497570 Wafer, fabricating method of the same, and semiconductor substrate Jul. 30, 2013
8492272 Passivated through wafer vias in low-doped semiconductor substrates Jul. 23, 2013
RE44376 Silicon substrate with reduced surface roughness Jul. 16, 2013
8481381 Superior integrity of high-k metal gate stacks by preserving a resist material above end caps of gate electrode structures Jul. 9, 2013
8475690 Diffusing agent composition, method of forming impurity diffusion layer, and solar battery Jul. 2, 2013
8466035 Methods and compositions for doping silicon substrates with molecular monolayers Jun. 18, 2013
8461032 Use of dopants with different diffusivities for solar cell manufacture Jun. 11, 2013
8445368 Semiconductor device and method for manufacturing same May. 21, 2013
8440536 Mask layout and method for forming vertical channel transistor in semiconductor device using the same May. 14, 2013
8420496 Semiconductor device and method of fabricating the same Apr. 16, 2013
8405176 Phosphorus paste for diffusion and process for producing solar battery utilizing the phosphorus paste Mar. 26, 2013
8399329 Method for manufacturing SOI substrate and semiconductor device Mar. 19, 2013
8394658 Methods of using a silicon nanoparticle fluid to control in situ a set of dopant diffusion profiles Mar. 12, 2013
8390092 Area-efficient high voltage bipolar-based ESD protection targeting narrow design windows Mar. 5, 2013
8367529 Method for preparing a semiconductor Feb. 5, 2013
8354333 Patterned doping of semiconductor substrates using photosensitive monolayers Jan. 15, 2013
8338275 Methods of forming a metal contact on a silicon substrate Dec. 25, 2012
8324071 Method for forming silicon film, method for forming pn junction and pn junction formed using the same Dec. 4, 2012
8304323 Semiconductor element manufacturing method Nov. 6, 2012
8293613 Gettering structures and methods and their application Oct. 23, 2012
8283241 Dopant implanting method and doping apparatus Oct. 9, 2012
8274081 Semiconductor constructions Sep. 25, 2012
8258559 Image sensor photodiode arrangement Sep. 4, 2012
8247318 Modifying catalytic behavior of nanocrystals Aug. 21, 2012
8237239 Schottky diode device and method for fabricating the same Aug. 7, 2012
8236676 Integrated circuit having doped semiconductor body and method Aug. 7, 2012
8236596 Diffusion furnaces employing ultra low mass transport systems and methods of wafer rapid diffusion processing Aug. 7, 2012
8222712 Semiconductor integrated circuit device and a method of manufacturing the same Jul. 17, 2012

1 2 3 4 5










 
 
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