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Class Information
Number: 257/E33.002
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Light emitting semiconductor devices having a potential or a surface barrier, processes or apparatus peculiar to the manufacture or treatment of such devices, or of parts thereof > Device characterized by semiconductor body (epo)
Description: This subclass is indented under subclass E33.001. This subclass is substantially the same in scope as ECLA classification H01L33/00C.










Sub-classes under this class:

Class Number Class Name Patents
257/E33.013 Material of active region (epo) 103
257/E33.003 Particular crystalline orientation or structure (epo) 233
257/E33.043 Physical imperfections (e.g., particular concentration or distribution of impurity) (epo) 174
257/E33.005 Shape or structure (e.g., shape of epitaxial layer) (epo) 464


Patents under this class:
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Patent Number Title Of Patent Date Issued
8710614 Light receiving element with offset absorbing layer Apr. 29, 2014
8703515 Method for guiding current in a light emitting diode (LED) device Apr. 22, 2014
8680569 Method for manufacturing gallium oxide based substrate, light emitting device, and method for manufacturing the light emitting device Mar. 25, 2014
8674399 Semiconductor layer Mar. 18, 2014
8664747 Trenched substrate for crystal growth and wafer bonding Mar. 4, 2014
8664682 Semiconductor light emitting device and method of fabricating the same Mar. 4, 2014
8647897 Air-stable ink for scalable, high-throughput layer deposition Feb. 11, 2014
8624273 Circuit structure of package carrier and multi-chip package Jan. 7, 2014
8603922 Semiconductor device, display, electronic apparatus and method of manufacturing a semiconductor device Dec. 10, 2013
8604501 Organic light emitting display device Dec. 10, 2013
8581297 Method of manufacturing organic EL display unit and organic EL display unit Nov. 12, 2013
8546818 Vertical LED with current-guiding structure Oct. 1, 2013
8541810 Blue light emitting semiconductor nanocrystal materials Sep. 24, 2013
8525154 Light-emitting device having optical resonance layer Sep. 3, 2013
8487327 Group-III nitride semiconductor device, epitaxial substrate, and method of fabricating group-III nitride semiconductor device Jul. 16, 2013
8461604 Optoelectronic module having a carrier substrate and a plurality of radiation-emitting semiconductor components Jun. 11, 2013
8455893 Light-emitting apparatus and production method thereof Jun. 4, 2013
8455322 Silicon germanium heterojunction bipolar transistor structure and method Jun. 4, 2013
8436393 Light-emitting-diode chip comprising a sequence of GaN-based epitaxial layers which emit radiation and a method for producing the same May. 7, 2013
8409366 Separation method of nitride semiconductor layer, semiconductor device, manufacturing method thereof, semiconductor wafer, and manufacturing method thereof Apr. 2, 2013
8384078 Organic light emitting display device and method of manufacturing the same Feb. 26, 2013
8383435 Integrated photonic semiconductor devices and methods for making integrated photonic semiconductor devices Feb. 26, 2013
8368079 Semiconductor device including common potential line Feb. 5, 2013
8349629 Semiconductor light-emitting element and method of manufacturing same Jan. 8, 2013
8350274 Light emitting device, method of manufacturing the light emitting device, light emitting device package, and lighting unit Jan. 8, 2013
8330142 Quantum dot light emitting device having quantum dot multilayer Dec. 11, 2012
8319253 Semiconductor light-emitting device Nov. 27, 2012
8304784 Illumination device Nov. 6, 2012
8299452 Method for fabrication of semipolar (Al, In, Ga, B)N based light emitting diodes Oct. 30, 2012
8253211 Semiconductor sensor structures with reduced dislocation defect densities Aug. 28, 2012
8207544 Group-III nitride semiconductor device, epitaxial substrate, and method of fabricating group-III nitride semiconductor device Jun. 26, 2012
8178896 Light emitting element May. 15, 2012
8158464 Method of manufacturing a liquid crystal display device with a semiconductor film including zinc oxide Apr. 17, 2012
8158987 Light-emitting diode and method for fabrication thereof Apr. 17, 2012
8148713 Method for fabrication of semipolar (Al, In, Ga, B)N based light emitting diodes Apr. 3, 2012
8148733 Vertical LED with current guiding structure Apr. 3, 2012
8134156 Semiconductor device including zinc oxide containing semiconductor film Mar. 13, 2012
8125001 Method for manufacturing gallium oxide based substrate, light emitting device, and method for manufacturing the light emitting device Feb. 28, 2012
8080437 Blue light emitting semiconductor nanocrystal materials Dec. 20, 2011
8076690 Semiconductor light emitting apparatus having a non-light emitting corner area Dec. 13, 2011
8071989 Multi-chip package with a plurality of chip pads arranged in an array Dec. 6, 2011
8030110 Nitride semiconductor light-emitting device and method for fabrication thereof Oct. 4, 2011
8003994 Vertical LED with current guiding structure Aug. 23, 2011
7964890 Epitaxial substrate, method of making same and method of making a semiconductor chip Jun. 21, 2011
7939844 Light-emitting-diode chip comprising a sequence of GAN-based epitaxial layers which emit radiation and a method for producing the same May. 10, 2011
7932526 LED semiconductor body and use of an LED semiconductor body Apr. 26, 2011
7915628 Light emitting device and method of manufacturing the same Mar. 29, 2011
7915619 Light-emitting diode and method for fabrication thereof Mar. 29, 2011
7903707 Nitride semiconductor light-emitting device Mar. 8, 2011
7903708 Nitride semiconductor light-emitting device and method for fabrication thereof Mar. 8, 2011

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