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| Number | Title | Issue Date |
| 7432534 | III-nitride semiconductor light emitting device The present invention relates to a III-nitride semiconductor light emitting device comprising a plurality of III-nitride semiconductor layers including an active layer emitting light by recombination of electrons and holes, the plurality of III-nitride semiconductor... | 10/07/2008 |
| 7429756 | Nitride semiconductor light emitting device A nitride semiconductor light emitting device is provided. The nitride semiconductor light emitting device includes: an n-type nitride semiconductor layer; an Incontaining super lattice structure layer formed above the n-type nitride semiconductor layer; a first ele... | 09/30/2008 |
| 7364929 | Nitride semiconductor based light-emitting device and manufacturing method thereof An object of the present invention is to provide a nitride semiconductor based light-emitting device, which is low in operating voltage reduction and is high in performance, and a manufacturing method thereof. A first metal film is formed on a P-type conducti... | 04/29/2008 |
| 7365369 | Nitride semiconductor device A nitride semiconductor device used chiefly as an LD and an LED element. In order to improve the output and to decrease Vf, the device is given either a three-layer structure in which a nitride semiconductor layer doped with n-type impurities serving as an n-type co... | 04/29/2008 |
| 7352012 | Nitride compound semiconductor light emitting device and method for producing the same A nitride compound semiconductor light emitting device includes: a GaN substrate having a crystal orientation which is tilted away from a direction by an angle which is equal to or greater than about 0.05° and which is equal to or less than about 2°, and a ... | 04/01/2008 |
| 7331566 | Nitride semiconductor light emitting device A nitride semiconductor light emitting device and a method of manufacturing the same are disclosed. The nitride semiconductor light emitting device comprises an n-type nitride semiconductor layer formed on a substrate, an active layer formed on the n-type nitride se... | 02/19/2008 |
| 7319248 | High brightness light emitting diode The present invention discloses a high brightness light emitting diode. The light emitting diode primarily includes a permanent substrate, a reflective mirror formed on said permanent substrate, an n-type cladding layer formed on said reflective mirror, and defining... | 01/15/2008 |
| 7276391 | Manufacture of a semiconductor device A method of fabricating the active region of a semiconductor light-emitting device, in which the active region comprises a plurality of barrier layers (11,13,15,17) with each pair of barrier layers being separated by a quantum well layer (12,14,16), co... | 10/02/2007 |
| 7187007 | Nitride semiconductor device and method of manufacturing the same The present invention provides a nitride semiconductor device. The nitride semiconductor device comprises an n-type nitride semiconductor layer formed on a nitride crystal growth substrate. An active layer is formed on the n-type nitride semiconductor layer. A first... | 03/06/2007 |
| 7161301 | Nitride light-emitting device having an adhesive reflecting layer A nitride light-emitting device having an adhesive reflecting layer includes a transparent adhesive layer, a nitride light-emitting stack layer and a metal reflecting layer. The transparent adhesive layer adheres the nitride light-emitting stack layer and the metal ... | 01/09/2007 |
| 7105850 | GaN LED structure with p-type contacting layer grown at low-temperature and having low resistivity Disclosed is a GaN LED structure with a p-type contacting layer using Al—Mg-codoped In1−yGayN grown at low temperature, and having low resistivity. The LED structure comprises, from the bottom to top, a substrate, a buffer layer, an n-type ... | 09/12/2006 |
| 7105865 | AlInGaN mixture crystal substrate Seeds are implanted in a regular pattern upon an undersubstrate. An AlxInyGa1-x-yN (0≦x≦1, 0≦y≦1, 0 | 09/12/2006 |
| 7105857 | Nitride semiconductor device comprising bonded substrate and fabrication method of the same A substrate 1 for growing nitride semiconductor has a first and second face and has a thermal expansion coefficient that is larger than that of the nitride semiconductor. At least n-type nitride semiconductor layers 3 to 5, an active layer 6 | 09/12/2006 |
| 7087922 | Light-emitting diode structure A gallium-nitride based light-emitting diode structure includes a digital penetration layer to raise its reverse withstanding voltage and electrostatic discharge. The digital penetration layer is formed by alternate stacking layers of AlxInyGa | 08/08/2006 |
| 7015515 | Group III nitride compound semiconductor device having a superlattice structure After one of layers constituting a superlattice structure is formed by an MOCVD method, NH3 gas is circulated together with H2 gas as a carrier gas to thereby perform a purge step. After the purge step, a next layer is formed. ... | 03/21/2006 |
| 6696704 | Composite light-emitting device, semiconductor light-emitting unit and method for fabricating the unit A composite light-emitting device according to the present invention includes a light-emitting element including a transparent substrate and a multilayer structure formed on the substrate. The multilayer structure includes first and second semiconductor l... | 02/24/2004 |
| 6695913 | III-Nitride optoelectronic semiconductor device containing lattice mismatched III-Nitride semiconductor materials A light-emitting diode or laser diode comprises a sapphire substrate and, grown on the substrate, a GaN buffer layer, an n-doped GaN contact layer, an n-doped (AlGa)N cladding layer, a Zn-doped (InGa)N active layer, a p-doped (AlGa)N cladding layer and a ... | 02/24/2004 |
| 6693303 | Nitride semiconductor device and method for manufacturing the same A nitride semiconductor device is composed of Group III nitride semiconductors. The device includes an active layer, and a barrier layer made from a predetermined material and provided adjacent to the active layer. The barrier layer has a greater band-gap... | 02/17/2004 |
| 6693352 | Contact structure for group III-V semiconductor devices and method of producing the same A contact structure for group III-V and group II-VI compound semiconductor devices, generally used as a light emitting diode (LED), a laser diode (LD), or a photodiode (PD), comprising p-type and/or n-type conduction is disclosed. The contact structure co... | 02/17/2004 |
| 6693307 | Semiconductor light emitting element In a light emitting element using nitride compound semiconductors, an active layer made of a mixed crystal containing In additionally contains at least Al or B as a component of the mixed crystal to improve the thermal resistance of the crystal and the re... | 02/17/2004 |
| 6693302 | Semiconductor light-emitting element In a semiconductor light-emitting element, an underlayer is made of a high crystallinity Al-including semiconducting nitride material of which the FWHM is 90 seconds or below in full width at half maximum of an X-ray rocking curve. A light-emitting layer ... | 02/17/2004 |
| 6685773 | Crystal growth method for nitride semiconductor, nitride semiconductor light emitting device, and method for producing the same A crystal growth method for growing a nitride semiconductor crystal on a sapphire substrate in a vapor phase, includes the steps of: providing a sapphire substrate having a substrate orientation inclined by about 0.05° to about 0.2° from a orienta... | 02/03/2004 |
| 6683327 | Nucleation layer for improved light extraction from light emitting devices A light emitting device including a nucleation layer containing aluminum is disclosed. The thickness and aluminum composition of the nucleation layer are selected to match the index of refraction of the substrate and device layers, such that 90% of light ... | 01/27/2004 |
| 6677617 | Semiconductor LED composed of group III nitrided emission and fluorescent layers This invention provides a light-emitting diode which is capable of extracting white light, manufactured readily and highly reliable. The light-emitting diode is fabricated by laminating a buffer layer 2, an Si (silicon)-doped GaN fluorescent layer 3, an n... | 01/13/2004 |
| 6677708 | Semiconductor light-emitting element In a semi-conductor light-emitting element, an underlayer is made of a high crystallinity Al-including semi-conducting nitride material of which the FWHM is 90 second or below in X-ray rocking curve. Then, a light-emitting layer is made of a semi-conducti... | 01/13/2004 |
| 6677619 | Nitride semiconductor device A nitride semiconductor device including a light emitting device comprises a n-type region of one or more nitride semiconductor layers having n-type conductivity, a p-type region of one or more nitride semiconductor layers having p-type conductivity and a... | 01/13/2004 |
| 6670647 | Semiconductor light emitting element, display device and optical information reproduction device using the same, and fabrication method of semiconductor light emitting element A semiconductor light emitting element includes: a first conductive type layer made of a nitride semiconductor which is deposited on a substrate; a quantum well active layer made of AlP GaQ In1-P-Q N (OࣘP, OࣘQ, P+Q | 12/30/2003 |
| 6667498 | Nitride semiconductor stack and its semiconductor device A transistor structure is implemented which can achieve high current gain by causing electrons injected from an emitter to reach a collector. An InGaN graded layer, which is interposed between a p-type InGaN layer and an n-type GaN layer, includes an In c... | 12/23/2003 |
| 6665329 | Broadband visible light source based on AllnGaN light emitting diodes A visible light source device is described based on a light emitting diode and a nanocluster-based film. The light emitting diode utilizes a semiconductor quantum well structure between n-type and p-type semiconductor materials on the top surface a substr... | 12/16/2003 |
| 6664560 | Ultraviolet light emitting diode A light emitting diode is disclosed. The diode includes a silicon carbide substrate having a first conductivity type, a first gallium nitride layer above the SiC substrate having the same conductivity type as the substrate, a superlattice on the GaN layer... | 12/16/2003 |
| 6657234 | Nitride semiconductor device An nitride semiconductor device for the improvement of lower operational voltage or increased emitting output, comprises an active layer comprising quantum well layer or layers and barrier layer or layers between n-type nitride. semiconductor layers and p... | 12/02/2003 |
| 6657300 | Formation of ohmic contacts in III-nitride light emitting devices P-type layers of a GaN based light-emitting device are optimized for formation of Ohmic contact with metal. In a first embodiment, a p-type GaN transition layer with a resistivity greater than or equal to about 7 Ωcm is formed between a p-type conductivi... | 12/02/2003 |
| 6653663 | Nitride semiconductor device The nitride semiconductor device includes: a substrate made of a III-V group compound semiconductor containing nitride; and a function region made of a III-V group compound semiconductor layer containing nitride formed on a main surface of the substrate. ... | 11/25/2003 |
| 6649440 | Aluminum indium gallium nitride-based LED having thick epitaxial layer for improved light extraction A light-emitting diode (LED) and a method of making the device utilize a thick multi-layered epitaxial structure that increases the light extraction efficiency of the device. The LED is an aluminum-gallium-indium-nitride (AlGaInN)-based LED. The thick ... | 11/18/2003 |
| 6649287 | Gallium nitride materials and methods The invention provides semiconductor materials including a gallium nitride material layer formed on a silicon substrate and methods to form the semiconductor materials. The semiconductor materials include a transition layer formed between the silicon subs... | 11/18/2003 |
| 6649943 | Group III nitride compound semiconductor light-emitting element Disclosed is a Group III nitride compound semiconductor light-emitting element formed of Group III nitride compound semiconductor layers, including a multi-layer containing light-emitting layers; a p-type semiconductor layer; and an n-type semiconductor l... | 11/18/2003 |
| 6649942 | Nitride-based semiconductor light-emitting device A nitride-based semiconductor light-emitting device capable of attaining homogeneous emission with a low driving voltage is obtained. This nitride-based semiconductor light-emitting device comprises a first conductivity type first nitride-based semiconduc... | 11/18/2003 |
| 6649288 | Nitride film A Group III nitride film is directly grown on a crystalline substrate along the C-axis of the substrate, and includes at least Al. The Group III nitride film has a hexagonal crystal system, and the lattice constant "c" of the c-axis of the Group III nitri... | 11/18/2003 |
| 6645885 | Forming indium nitride (InN) and indium gallium nitride (InGaN) quantum dots grown by metal-organic-vapor-phase-epitaxy (MOCVD) Indium Nitride (InN) and Indium-rich Indium Gallium Nitride (InGaN) quantum dots embedded in single and multiple Inx Ga1-x N/Iny Ga1-y N quantum wells (QWs) are formed by using TMIn and/or Triethylindium (TEIn),... | 11/11/2003 |
| 6642072 | Light-emitting element, semiconductor light-emitting device, and manufacturing methods therefor A GaN-based LED element 1 having a double heterostructure, which includes a GaN layer and the like and is formed on a sapphire substrate, is mounted face-down on a Si diode element 2 formed in a silicon substrate. Electrical connections are provided via A... | 11/04/2003 |
