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Class Information
Number: 257/E21.259
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) > Treatment of semiconductor body using process other than deposition of semiconductor material on a substrate, diffusion or alloying of impurity material, or radiation treatment (epo) > To change their surface-physical characteristics or shape, e.g., etching, polishing, cutting (epo) > To form insulating layer thereon, e.g., for masking or by using photolithographic technique (epo) > Organic layers, e.g., photoresist (epo)
Description: This subclass is indented under subclass E21.24. This subclass is substantially the same in scope as ECLA classification H01L21/312.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.265 By langmuir-blodgett technique (epo) 26
257/E21.26 Layer comprising organo-silicon compound (epo) 227
257/E21.264 Layers comprising fluoro hydrocarbon compounds, e.g., polytetrafluoroethylene (epo) 151


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
8685865 Method of forming patterns of semiconductor device Apr. 1, 2014
8617653 Over-coating agent for forming fine patterns and a method of forming fine patterns using such agent Dec. 31, 2013
8592619 Bifunctional molecules comprising a cycloalkyne or heterocycloalkyne group and a redox group Nov. 26, 2013
8592821 Semiconductor element, organic transistor, light-emitting device, and electronic device Nov. 26, 2013
8580588 Organic light emitting display device and fabricating method thereof Nov. 12, 2013
8581421 Semiconductor package manufacturing method and semiconductor package Nov. 12, 2013
8575031 Method of forming a fine pattern, display substrate, and method of manufacturing the same using the method of forming a fine pattern Nov. 5, 2013
8575039 Surface treating method and film depositing method Nov. 5, 2013
8546262 Solid-state image pickup device, method of manufacturing the same and electronic apparatus Oct. 1, 2013
8535972 Methods for coating a substrate with an amphiphilic compound Sep. 17, 2013
8536068 Atomic layer deposition of photoresist materials and hard mask precursors Sep. 17, 2013
8530003 Polybenzoxazole precursor, photosensitive resin composition using the same, and manufacturing method of semiconductor device Sep. 10, 2013
8530360 Method for low stress flip-chip assembly of fine-pitch semiconductor devices Sep. 10, 2013
8481429 Method of manufacturing semiconductor device Jul. 9, 2013
8466072 Process of localized electrografting onto photosensitive semiconductor substrates Jun. 18, 2013
8445368 Semiconductor device and method for manufacturing same May. 21, 2013
8415199 Manufacturing method of semiconductor device Apr. 9, 2013
8378464 Method for manufacturing semiconductor device, semiconductor device, semiconductor manufacturing apparatus and storage medium Feb. 19, 2013
8373241 Antireflective hard mask compositions Feb. 12, 2013
8344395 Light-emitting diode and manufacturing method thereof Jan. 1, 2013
8304266 Manufacturing method of thin film transistor substrate of liquid crystal display panel Nov. 6, 2012
8283199 Solar cell patterning and metallization Oct. 9, 2012
8258056 Method and material for forming a double exposure lithography pattern Sep. 4, 2012
8222705 Solid-state image pickup device, method of manufacturing the same and electronic apparatus Jul. 17, 2012
8148805 Forming compliant contact pads for semiconductor packages Apr. 3, 2012
8110432 Gate-planarized thin film transistor substrates and related methods of fabrication Feb. 7, 2012
8030149 Method for manufacturing semiconductor device Oct. 4, 2011
8017460 Method of manufacturing flat panel display Sep. 13, 2011
8017465 Method for manufacturing array substrate of liquid crystal display Sep. 13, 2011
7989354 Patterning method Aug. 2, 2011
7985667 Method for patterning semiconductor device having magnetic tunneling junction structure Jul. 26, 2011
7981812 Methods for forming ultra thin structures on a substrate Jul. 19, 2011
7981810 Methods of depositing highly selective transparent ashable hardmask films Jul. 19, 2011
7981706 Photoresist composition and method of manufacturing a display substrate using the same Jul. 19, 2011
7972964 Semiconductor device with contact structure and manufacturing method thereof Jul. 5, 2011
7960288 Photoresist trimming process Jun. 14, 2011
7956393 Composition for photoresist stripper and method of fabricating thin film transistor array substrate Jun. 7, 2011
7955988 Photoresist trimming process Jun. 7, 2011
7939922 Forming compliant contact pads for semiconductor packages May. 10, 2011
7910419 SOI transistor with self-aligned ground plane and gate and buried oxide of variable thickness Mar. 22, 2011
7898083 Method for low stress flip-chip assembly of fine-pitch semiconductor devices Mar. 1, 2011
7892878 Organic light emitting device and method of manufacturing the same Feb. 22, 2011
7879726 Methods of forming semiconductor devices using selective etching of an active region through a hardmask Feb. 1, 2011
7875515 Method for manufacturing capacitor of semiconductor device Jan. 25, 2011
7867920 Method for modifying high-k dielectric thin film and semiconductor device Jan. 11, 2011
7867913 Method for fabricating fine pattern in semiconductor device Jan. 11, 2011
7838314 Organic light emitting display and method of fabricating the same Nov. 23, 2010
7829413 Methods for forming quantum dots and forming gate using the quantum dots Nov. 9, 2010
7820550 Negative tone double patterning method Oct. 26, 2010
7799628 Advanced metal gate method and device Sep. 21, 2010

1 2 3 4 5 6 7 8 9 10 11 12 13










 
 
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