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Class Information
Number: 257/E33.047
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 their operation (epo) > Having p-n or hi-lo junction (epo) > Having at least two p-n junctions (epo)
Description: This subclass is indented under subclass E33.045. This subclass is substantially the same in scope as ECLA classification H01L33/00D2C.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8552414 Electronically scannable multiplexing device Oct. 8, 2013
8476652 Three-dimensional light-emitting devices and method for fabricating the same Jul. 2, 2013
8450755 Light emitting device May. 28, 2013
8384096 Semiconductor component with optically active regions which provides high optical output power, and method for producing same Feb. 26, 2013
8148736 Flip chip type light-emitting element Apr. 3, 2012
8134178 Light-emitting element Mar. 13, 2012
7948004 Light source head and image forming apparatus May. 24, 2011
7851810 Method of manufacturing semiconductor light emitting device Dec. 14, 2010
7763902 Light emitting diode chip Jul. 27, 2010
7709845 Semiconductor light emitting device with improved current spreading structure May. 4, 2010
7692202 Semiconductor structure comprising active zones Apr. 6, 2010
7683396 High power light emitting device assembly utilizing ESD protective means sandwiched between dual sub-mounts Mar. 23, 2010
7589350 Light-emitting diode chip Sep. 15, 2009
7501662 Semiconductor light emitting element array illuminator using the same Mar. 10, 2009
7385225 Surface emitting type device, and method for manufacturing the same Jun. 10, 2008
6992317 Full color display structures using pseudomorphic cladded quantum dot nanophosphor thin films Jan. 31, 2006
6973957 Continuous casting mold, a shorter side thereof and method of exchanging the shorter side frame Dec. 13, 2005
6919583 End surface light-emitting element having increased external light emission efficiency and self-scanning light-emitting element array using the same Jul. 19, 2005
6881602 Gallium nitride-based semiconductor light emitting device and method Apr. 19, 2005
6795468 Electric pumping of rare-earth-doped silicon for optical emission Sep. 21, 2004
6720570 Gallium nitride-based semiconductor light emitting device Apr. 13, 2004
6717182 Edge-emitting light-emitting device having improved external luminous efficiency and self-scanning light-emitting device array comprising the same Apr. 6, 2004
6614055 Surface light-emitting element and self-scanning type light-emitting device Sep. 2, 2003
6590347 Light-emitting element matrix array Jul. 8, 2003
6472718 Semiconductor device Oct. 29, 2002
6465270 Process for producing a semiconductor device Oct. 15, 2002
6339233 Metal clad ridge waveguide ("MCRW") laser semiconductor structure with doped semiconductor substrate Jan. 15, 2002
6180960 Surface light-emitting element and self-scanning type light-emitting device Jan. 30, 2001
5994723 Semiconductor element and its method of manufacturing Nov. 30, 1999
5892787 N-drive, p-common light-emitting devices fabricated on an n-type substrate and method of making same Apr. 6, 1999
5679963 Semiconductor tunnel junction with enhancement layer Oct. 21, 1997
5677551 Semiconductor optical device and an optical processing system that uses such a semiconductor optical system Oct. 14, 1997
5652439 Fast electrical complete turn-off optical device Jul. 29, 1997
5625201 Multiwavelength LED devices and methods of fabrication Apr. 29, 1997
5391896 Monolithic multi-color light emission/detection device Feb. 21, 1995
5349599 Bistable optical laser based on a heterostructure PNPN thyristor Sep. 20, 1994
5340998 Semiconductor surface light emitting and receiving heterojunction device Aug. 23, 1994
5289018 Light emitting device utilizing cavity quantum electrodynamics Feb. 22, 1994
5229627 Vertical cavity type vertical to surface transmission electrophotonic device Jul. 20, 1993
5204871 Bistable optical laser based on a heterostructure pnpn thyristor Apr. 20, 1993
5166761 Tunnel junction multiple wavelength light-emitting diodes Nov. 24, 1992
5153758 Driving method and apparatus for a pnpn semiconductor device Oct. 6, 1992
5136353 Optical switch Aug. 4, 1992
5093875 Optical interconnection apparatus Mar. 3, 1992
4979002 Optical photodiode switch array with zener diode Dec. 18, 1990
4977433 Optoelectronic semiconductor device Dec. 11, 1990
4864168 Process for controlling an optical pnpn thyristor to be driven Sep. 5, 1989
4606032 Astable optical multi-vibrator Aug. 12, 1986
4605942 Multiple wavelength light emitting devices Aug. 12, 1986
4577207 Dual wavelength optical source Mar. 18, 1986

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