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Class Information
Number: 257/E33.027
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) > Material of active region (epo) > Comprising only group iii-v compound (epo) > Ternary or quaternary compound (e.g., algaas) (epo) > With heterojunction (epo)
Description: This subclass is indented under subclass E33.026. This subclass is substantially the same in scope as ECLA classification H01L33/00C4D3B.










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

Patent Number Title Of Patent Date Issued
8680571 Gallium nitride based light emitting diode Mar. 25, 2014
8669129 Method for producing group III nitride semiconductor light-emitting device, group III nitride semiconductor light-emitting device, and lamp Mar. 11, 2014
8647907 Nitride-based semiconductor device and method for fabricating the same Feb. 11, 2014
8643037 Nitride semiconductor light emitting device Feb. 4, 2014
8546787 Group III nitride based quantum well light emitting device structures with an indium containing capping structure Oct. 1, 2013
8530257 Band offset in alingap based light emitters to improve temperature performance Sep. 10, 2013
8530913 Light emitting device Sep. 10, 2013
8507925 Optoelectronic device and method for manufacturing the same Aug. 13, 2013
8502246 Fabrication of nonpolar indium gallium nitride thin films, heterostructures and devices by metalorganic chemical vapor deposition Aug. 6, 2013
8502245 Semiconductor light emitting device having plural active layer cycles and electron barrier energy band gaps Aug. 6, 2013
8482027 Epitaxial wafer for light emitting diode Jul. 9, 2013
8445302 Method for producing group III nitride semiconductor light-emitting device, group III nitride semiconductor light-emitting device, and lamp May. 21, 2013
8420425 Method for producing a group III nitride semiconductor light-emitting device Apr. 16, 2013
8399896 Semiconductor light emitting device and method of manufacturing the same Mar. 19, 2013
8384098 AC light emitting diode and method for fabricating the same Feb. 26, 2013
8368092 Thin film LED comprising a current-dispersing structure Feb. 5, 2013
8344414 Semiconductor light emitting device Jan. 1, 2013
8309980 Infrared light emitting device Nov. 13, 2012
8227789 Optical semiconductor device and method of manufacturing the same Jul. 24, 2012
8178896 Light emitting element May. 15, 2012
8124990 Semiconductor light emitting device having an electron barrier layer between a plurality of active layers Feb. 28, 2012
8093685 Nitride compound semiconductor element Jan. 10, 2012
8076685 Nitride semiconductor device having current confining layer Dec. 13, 2011
8063408 Integrated semiconductor optical device and optical apparatus using the same Nov. 22, 2011
8053755 Semiconductor heterostructure Nov. 8, 2011
8044384 Group III nitride based quantum well light emitting device structures with an indium containing capping structure Oct. 25, 2011
8030669 Semiconductor light emitting device Oct. 4, 2011
8017958 P-contact layer for a III-P semiconductor light emitting device Sep. 13, 2011
7999280 Light emitting diode package employing lead terminal with reflecting surface Aug. 16, 2011
7964887 Light emitting device Jun. 21, 2011
7935974 White light emitting device May. 3, 2011
7928453 Semiconductor light emitting device Apr. 19, 2011
7928448 III-nitride light emitting device including porous semiconductor layer Apr. 19, 2011
7906787 Nitride micro light emitting diode with high brightness and method for manufacturing the same Mar. 15, 2011
7897993 GaN based luminescent device on a metal substrate Mar. 1, 2011
7899103 Side light emitting type semiconductor laser diode having dielectric layer formed on active layer Mar. 1, 2011
7880187 Semiconductor light emitting device having narrow radiation spectrum Feb. 1, 2011
7842531 Gallium nitride-based device and method Nov. 30, 2010
7838893 Semiconductor optical device Nov. 23, 2010
7838890 Optical device and method for manufacturing optical device Nov. 23, 2010
7834364 AC light emitting diode and method for fabricating the same Nov. 16, 2010
7816664 Defect reduction by oxidation of silicon Oct. 19, 2010
7800123 Electroluminescence device Sep. 21, 2010
7736926 Method for manufacturing a light-emitting device with a periodic structure in an active region Jun. 15, 2010
7732831 Compound semiconductor light-emitting device with AlGaInP light-emitting layer formed within Jun. 8, 2010
7728338 Nitride semiconductor light emitting device and fabricating method thereof Jun. 1, 2010
7714316 Method of manufacturing semiconductor device, acid etching resistance material and copolymer May. 11, 2010
7667240 Radiation-emitting semiconductor chip and method for producing such a semiconductor chip Feb. 23, 2010
7649195 Light emitting diode having active region of multi quantum well structure Jan. 19, 2010
7638809 Light emitting device Dec. 29, 2009

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