Source: http://www.google.com/patents/US6162656?dq=U.S.+Patent+
Timestamp: 2017-02-22 20:41:11
Document Index: 59475388

Matched Legal Cases: ['art 2', 'art 2', 'art. 2', 'art. 2', 'art. 1', 'art. 1']

Patent US6162656 - Manufacturing method of light emitting device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA method of manufacturing a light emitting device, including the steps of: forming an active layer composed of a compound semiconductor containing indium by a vapor phase growth method; and forming a cap layer composed of a compound semiconductor on said active layer by a vapor phase growth method at...http://www.google.com/patents/US6162656?utm_source=gb-gplus-sharePatent US6162656 - Manufacturing method of light emitting deviceAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6162656 APublication typeGrantApplication numberUS 09/427,694Publication dateDec 19, 2000Filing dateOct 27, 1999Priority dateApr 26, 1996Fee statusPaidAlso published asCN1169036A, CN1220278C, CN1540775A, CN100353573C, DE69735078D1, DE69735078T2, EP0803916A2, EP0803916A3, EP0803916B1, EP1453112A1, EP1453112B1, EP2383846A2, EP2383846A3, US5990496, USRE42074Publication number09427694, 427694, US 6162656 A, US 6162656A, US-A-6162656, US6162656 A, US6162656AInventorsTatsuya Kunisato, Takashi Kano, Yasuhiro Ueda, Yasuhiko Matsushita, Katsumi YagiOriginal AssigneeSanyo Electric Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (15), Non-Patent Citations (12), Referenced by (47), Classifications (22), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetManufacturing method of light emitting device
US 6162656 AAbstract
1. A method of manufacturing a light emitting device, comprising the steps of:forming an active layer composed of a nitride system semiconductor by a vapor phase growth method; forming a cap layer composed of a nitride system semiconductor on said active layer by a vapor phase growth method at a growth temperature approximately equal to or lower than a growth temperature for said active layer; and forming a cladding layer composed of a nitride system semiconductor of one conductivity type on said cap layer by a vapor phase growth method; wherein said cap layer has a lower impurity concentration than said cladding layer. 2. The method of manufacturing a light emitting device according to claim 1, whereinsaid active layer is composed of a III-V group nitride system semiconductor, said cap layer is composed of a III-V group nitride system semiconductor, and said cladding layer is composed of a III-V group nitride system semiconductor. 3. The method of manufacturing a light emitting device according to claim 2, wherein said step of forming a cladding layer includes forming said cladding layer at a growth temperature higher than the temperature allowing crystal growth of said active layer.
4. The method of manufacturing a light emitting device according to claim 3, whereinsaid cap layer is composed of Alu Ga1-u N, said cladding layer is composed of Alz Ga1-z N of one conductivity type, and the Al composition ratio u of said cap layer is smaller than the Al composition ratio z of said cladding layer. 5. The method of manufacturing a light emitting device according to claim 4, wherein the Al composition ratio u of said cap layer is approximately equal to or smaller than 0.1.
11. The method of manufacturing a light emitting device according to claim 1, wherein said active layer has a quantum well structure including an InGaN quantum well layer and a GaN quantum barrier layer, andthe step of forming said active layer includes forming said GaN quantum barrier layer at a growth temperature of not lower than 700° C. nor higher than 950° C. Description
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS5345463 *Apr 13, 1993Sep 6, 1994Matsushita Electric Industrial Co., Ltd.Semiconductor laser with improved oscillation wavelength reproducibilityUS5393993 *Dec 13, 1993Feb 28, 1995Cree Research, Inc.Buffer structure between silicon carbide and gallium nitride and resulting semiconductor devicesUS5495115 *Aug 8, 1994Feb 27, 1996Hitachi, Ltd.Semiconductor crystalline laminate structure, forming method of the same, and semiconductor device employing the sameUS5563422 *Apr 28, 1994Oct 8, 1996Nichia Chemical Industries, Ltd.Gallium nitride-based III-V group compound semiconductor device and method of producing the sameUS5578839 *Nov 17, 1993Nov 26, 1996Nichia Chemical Industries, Ltd.Light-emitting gallium nitride-based compound semiconductor deviceUS5583878 *Jun 23, 1994Dec 10, 1996The Furukawa Electric Co., Ltd.Semiconductor optical deviceUS5592501 *Sep 20, 1994Jan 7, 1997Cree Research, Inc.Low-strain laser structures with group III nitride active layersUS5656832 *Mar 8, 1995Aug 12, 1997Kabushiki Kaisha ToshibaSemiconductor heterojunction device with ALN buffer layer of 3nm-10nm average film thicknessUS5777350 *Nov 30, 1995Jul 7, 1998Nichia Chemical Industries, Ltd.Nitride semiconductor light-emitting deviceUS5866440 *Oct 14, 1997Feb 2, 1999Sharp Kabushiki KaishaMethod of making compound semiconductor light emitting device having evaporation preventing layer Alx Ga.sub.(1-x) NUS5990496 *Apr 25, 1997Nov 23, 1999Sanyo Electric Co., Ltd.Light emitting device with cap layerEP0497350A1 *Jan 30, 1992Aug 5, 1992Nichia Kagaku Kogyo K.K.Crystal growth method for gallium nitride-based compound semiconductorJPH0774431A * Title not availableJPH06283825A * Title not availableJPH07249795A * Title not available* Cited by examinerNon-Patent CitationsReference1 *Compound Semiconductor, p. 7 Jan./Feb. 1996.2Compound Semiconductor, p. 7--Jan./Feb. 1996.3Nakamura S. et al. "Superbright green InGaN single-quantum-well-structure LEDs" Japanese Journal Of Applied Physics, Part 2 (Letters), Oct. 15, 1995, Japan, vol. 34, No. 10B, pp. L1332-L1335, XP000702227.4 *Nakamura S. et al. Superbright green InGaN single quantum well structure LEDs Japanese Journal Of Applied Physics, Part 2 (Letters), Oct. 15, 1995, Japan, vol. 34, No. 10B, pp. L1332 L1335, XP000702227.5Nakamura S: "III-V nitride-based LEDs" Conf. On Diamond, Diamond-Like And Related Materials, Barcelona, Sep. 10-15, 1995, vol. 5, No. 3-5, pp. 496-500, XP000627554.6 *Nakamura S: III V nitride based LEDs Conf. On Diamond, Diamond Like And Related Materials, Barcelona, Sep. 10 15, 1995, vol. 5, No. 3 5, pp. 496 500, XP000627554.7 *Shuji Nakamura et al.; Appl. Phys. Lett. 69 (10), pp. 1477 1479; Sep. 2, 1996.8Shuji Nakamura et al.; Appl. Phys. Lett. 69 (10), pp. 1477-1479; Sep. 2, 1996.9 *Shuji Nakamura et al.; Jpn. J. Appl. Phys. vol. 35, pp. L217 220, Part. 2, No. 2B; Feb. 15, 1996.10Shuji Nakamura et al.; Jpn. J. Appl. Phys. vol. 35, pp. L217-220, Part. 2, No. 2B; Feb. 15, 1996.11 *Shuji Nakamura et al.; Jpn. J. Appl. Phys. vol. 35, pp. L74 L76, Part. 1, No. 1B; Jan. 15, 1996.12Shuji Nakamura et al.; Jpn. J. Appl. Phys. vol. 35, pp. L74-L76, Part. 1, No. 1B; Jan. 15, 1996.* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6720196 *May 6, 2002Apr 13, 2004Sanyo Electric Co., Ltd.Nitride-based semiconductor element and method of forming nitride-based semiconductorUS6738175 *Dec 12, 2000May 18, 2004Nichia CorporationLight emitting deviceUS6952024 *Feb 13, 2003Oct 4, 2005Cree, Inc.Group III nitride LED with silicon carbide cladding layerUS7012283 *Sep 17, 2001Mar 14, 2006Sharp Kabushiki KaishaNitride semiconductor light emitting element and optical device containing itUS7067847 *Dec 14, 2001Jun 27, 2006Ngk Isulators, Ltd.Semiconductor elementUS7119378Nov 2, 2004Oct 10, 2006Nichia CorporationNitride semiconductor deviceUS7120181 *Mar 22, 2000Oct 10, 2006Sanyo Electric Co., Ltd.Semiconductor laser device and method of fabricating the sameUS7358522Nov 5, 2002Apr 15, 2008Nichia CorporationSemiconductor deviceUS7646009Feb 7, 2006Jan 12, 2010Nichia CorporationNitride semiconductor deviceUS7667226Feb 21, 2008Feb 23, 2010Nichia CorporationSemiconductor deviceUS7700384Feb 15, 2007Apr 20, 2010Sharp Kabushiki KaishaNitride semiconductor light emitting device and manufacturing method thereofUS7750337Sep 12, 2007Jul 6, 2010Nichia CorporationNitride semiconductor deviceUS8030745Feb 28, 2005Oct 4, 2011Semiconductor Energy Laboratory Co., Ltd.ID chip and IC cardUS8044384Feb 2, 2010Oct 25, 2011Cree, Inc.Group III nitride based quantum well light emitting device structures with an indium containing capping structureUS8211726Feb 16, 2007Jul 3, 2012Sharp Kabushiki KaishaMethod of manufacturing nitride semiconductor light emitting deviceUS8227268 *Oct 19, 2007Jul 24, 2012Cree, Inc.Methods of fabricating group III nitride based light emitting diode structures with a quantum well and superlattice, group III nitride based quantum well structures and group III nitride based superlattice structuresUS8309948Jun 11, 2010Nov 13, 2012Nichia CorporationNitride semiconductor deviceUS8536615Aug 2, 2010Sep 17, 2013Cree, Inc.Semiconductor device structures with modulated and delta doping and related methodsUS8546787Sep 30, 2011Oct 1, 2013Cree, Inc.Group III nitride based quantum well light emitting device structures with an indium containing capping structureUS8575592Feb 3, 2010Nov 5, 2013Cree, Inc.Group III nitride based light emitting diode structures with multiple quantum well structures having varying well thicknessesUS8604461Dec 16, 2009Dec 10, 2013Cree, Inc.Semiconductor device structures with modulated doping and related methodsUS8698126Oct 24, 2012Apr 15, 2014Nichia CorporationNitride semiconductor deviceUS9054253Aug 30, 2013Jun 9, 2015Cree, Inc.Group III nitride based quantum well light emitting device structures with an indium containing capping structureUS9112083Jun 27, 2012Aug 18, 2015Cree, Inc.Group III nitride based light emitting diode structures with a quantum well and superlattice, group III nitride based quantum well structures and group III nitride based superlattice structuresUS9130121Mar 20, 2014Sep 8, 2015Nichia CorporationNitride semiconductor deviceUS9444011Aug 25, 2015Sep 13, 2016Nichia CorporationNitride semiconductor deviceUS9449999Sep 21, 2011Sep 20, 2016Semiconductor Energy Laboratory Co., Ltd.Semiconductor device and IC cardUS9502605May 15, 2015Nov 22, 2016Samsung Electronics Co., Ltd.Method of fabricating semiconductor light emitting deviceUS20020125491 *Dec 14, 2001Sep 12, 2002Ngk Insulators, Ltd.Semiconductor elementUS20020179923 *Dec 12, 2000Dec 5, 2002Daisuke MoritaLight emitting deviceUS20040026710 *Sep 17, 2001Feb 12, 2004Yuhzoh TsudaNitride semiconductor light emitting element and optical device containing itUS20040159842 *Feb 13, 2003Aug 19, 2004Edmond John AdamGroup III nitride LED with silicon carbide cladding layerUS20050098789 *Nov 2, 2004May 12, 2005Nichia CorporationNitride semiconductor deviceUS20050127391 *Nov 5, 2002Jun 16, 2005Nichia CorporationSemiconductor elementUS20060131604 *Feb 7, 2006Jun 22, 2006Nichia CorporationNitride semiconductor deviceUS20070176622 *Feb 28, 2005Aug 2, 2007Semiconductor Energy Laboratory Co., Ltd.Id chip and ic cardUS20070194328 *Feb 15, 2007Aug 23, 2007Sharp Kabushiki KaishaNitride semiconductor light emitting device and manufacturing method thereofUS20070200126 *Feb 16, 2007Aug 30, 2007Sharp Kabushiki KaishaMethod of manufacturing nitride semiconductor light emitting deviceUS20080029758 *Sep 12, 2007Feb 7, 2008Nichia CorporationNitride semiconductor deviceUS20080038858 *Oct 19, 2007Feb 14, 2008Cree, Inc.Methods of fabricating group iii nitride based light emitting diode structures with a quantum well and superlattice, group iii nitride based quantum well structures and group iii nitride based superlattice structuresUS20080203418 *Feb 21, 2008Aug 28, 2008Nichia CorporationSemiconductor DeviceUS20100133508 *Feb 2, 2010Jun 3, 2010Cree, Inc.Group iii nitride based quantum well light emitting device structures with an indium containing capping structureUS20110187294 *Feb 3, 2010Aug 4, 2011Michael John BergmannGroup iii nitride based light emitting diode structures with multiple quantum well structures having varying well thicknessesUS20110212560 *Apr 20, 2011Sep 1, 2011Sumitomo Electric Industries, Ltd.Method for fabricating nitride semiconductor light emitting device and method for fabricating epitaxial waferUSRE42074 *Dec 18, 2002Jan 25, 2011Sanyo Electric Co., Ltd.Manufacturing method of light emitting deviceEP2352182A1 *Oct 19, 2009Aug 3, 2011Sumitomo Electric Industries, Ltd.Method for manufacturing nitride semiconductor light emitting element and method for manufacturing epitaxial waferEP2352182A4 *Oct 19, 2009Feb 11, 2015Sumitomo Electric IndustriesMethod for manufacturing nitride semiconductor light emitting element and method for manufacturing epitaxial wafer* Cited by examinerClassifications U.S. Classification438/46, 438/45, 438/22International ClassificationH01L33/32, H01L33/06, H01S5/343, H01S5/00, H01L33/12, H01S5/323, H01L33/34, H01L33/00Cooperative ClassificationH01S5/221, H01L33/02, H01L33/007, H01L33/32, H01S2301/173, H01S5/2231, H01S5/0213, H01S2304/04, H01S5/32341European ClassificationH01L33/00G3B2, H01L33/32Legal EventsDateCodeEventDescriptionMay 13, 2003RFReissue application filedEffective date: 20021218May 12, 2004FPAYFee paymentYear of fee payment: 4Jun 6, 2008FPAYFee paymentYear of fee payment: 8RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services