Source: http://www.google.com/patents/US7115486?dq=6,247,130
Timestamp: 2015-03-06 00:55:31
Document Index: 626381218

Matched Legal Cases: ['art 12', 'art 12', 'art 11', 'arts 11', 'art 12', 'art 12', 'art 11', 'art 11', 'art 12', 'art 11']

Patent US7115486 - Semiconductor base and its manufacturing method, and semiconductor crystal ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA growth plane of substrate 1 is processed to have a concavo-convex surface. The bottom of the concave part may be masked. When a crystal is grown by vapor phase growth using this substrate, an ingredient gas does not sufficiently reach the inside of a concave part 12, and therefore, a crystal growth...http://www.google.com/patents/US7115486?utm_source=gb-gplus-sharePatent US7115486 - Semiconductor base and its manufacturing method, and semiconductor crystal manufacturing methodAdvanced Patent SearchPublication numberUS7115486 B2Publication typeGrantApplication numberUS 10/842,777Publication dateOct 3, 2006Filing dateMay 11, 2004Priority dateMar 17, 1999Fee statusPaidAlso published asDE60030279D1, DE60030279T2, DE60043122D1, EP1184897A1, EP1184897A4, EP1184897B1, EP1184897B8, EP1501118A1, EP1501118B1, US6940098, US7504324, US7589001, US20040206299, US20070026643, US20070026644, WO2000055893A1Publication number10842777, 842777, US 7115486 B2, US 7115486B2, US-B2-7115486, US7115486 B2, US7115486B2InventorsKazuyuki Tadatomo, Hiroaki Okagawa, Yoichiro Ouchi, Masahiro KotoOriginal AssigneeMitsubishi Cable Industries Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (30), Non-Patent Citations (1), Referenced by (6), Classifications (37), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetSemiconductor base and its manufacturing method, and semiconductor crystal manufacturing method
FIG. 1 (a)�(c) and FIG. 6 (a)�(c) are sectional views explaining the state of crystal growth of the semiconductor base of the present invention. FIG. 6 (a)�(d) are sectional views explaining the manufacturing methods of the semiconductor crystal of the present invention.
In the embodiments shown in FIG. 6�FIG. 10, the mask 3, on which the crystal cannot substantially grow, is formed on the concave part 12. By the �on which the crystal cannot substantially grow� is meant a state wherein the crystal growth is difficult to proceed. In this state, the growth on the mask of the concave part may occur in the initial stage of growth, but ultimately, the crystal growth of the convex part 11 prevails.
FIG. 1�3 and FIG. 6�8 are cross sectional views of the convex parts 11 formed to constitute stripes. In FIG. 1 and FIG. 6, substrate 1 having a greater groove depth (convex height) h than a groove width B, as shown in FIG. 1( a) and FIG. 6( a), is exemplarily depicted. In this case, a sufficient amount of an ingredient gas does not reach the concave part 12 or the vicinity thereof. In the embodiment shown in FIG. 6, due to the mask 3 applied to the concave part 12, crystal growth occurs only from the upper part of the convex part 11. In FIG. 1( b) and FIG. 6( b), 20 is a crystal unit at the start of the crystal growth. Under the circumstances, as the crystal growth proceeds, the films grown in the lateral direction from the upper part of the convex part 11 as the starting point are connected and, as shown in FIG. 1( c), FIG. 6( c), the concavo-convex surface of the substrate 1 is covered, leaving cavity 13 in the concave part. In this case, a low dislocation region is formed in the part grown in the lateral direction, or the upper part of the concave part 12, as a result of which the film thus formed has high quality.
FIG. 3, FIG. 7( a)�(c) show an embodiment of a substrate 1 where the groove depth (convex height) h is considerably smaller than the groove width B or the groove width B is markedly wider than the width A of the convex part 11 (see FIG. 3( a), FIG. 7( a)).
4 � 107 cm−2 5 � 1017 cm−3 200�400
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allows growth of a gallium nitride group crystal in the c axis orientationUS6252261Jun 28, 1999Jun 26, 2001Nec CorporationGaN crystal film, a group III element nitride semiconductor wafer and a manufacturing process thereforUS6258617Aug 30, 1996Jul 10, 2001Kabushiki Kaisha ToshibaSemiconductorUS6274518Apr 10, 2000Aug 14, 2001Matsushita Electronics CorporationMethod for producing a group III nitride compound semiconductor substrateUS6303405Sep 24, 1999Oct 16, 2001Kabushiki Kaisha ToshibaForming on single crystal substrate abruption mechanism susceptible to stress; growing epitaxial base layer of nitride compound semiconductor on abruption mechanism; growing epitaxial light emitting layer of nitride compound; separatingUS6335546Jul 30, 1999Jan 1, 2002Sharp Kabushiki KaishaNitride semiconductor structure, method for producing a nitride semiconductor structure, and light emitting deviceUS6426519Nov 15, 2000Jul 30, 2002Ngk Insulators, Ltd.Epitaxial growth substrate and a method for producing the sameUS6582986 *Aug 21, 2001Jun 24, 2003Cree, Inc.Single step pendeo-and lateral epitaxial overgrowth of group III-nitride epitaxial layers with group III-nitride buffer layer and resulting structuresUS6617182Sep 14, 1999Sep 9, 2003Matsushita Electric Industrial Co., Ltd.Semiconductor device and semiconductor substrate, and method for fabricating the sameUS20040048471Sep 17, 2001Mar 11, 2004Hiroaki OkagawaSemiconductor base material and method of manufacturing the materialEP0874405A2Mar 20, 1998Oct 28, 1998Mitsubishi Cable Industries, Ltd.GaN group crystal base member having low dislocation density, use thereof and manufacturing methods thereofJP2000101139A Title not availableJP2000106455A Title not availableJP2000156524A Title not availableJP2000357663A Title not availableJPH04236478A Title not availableJPH05267175A Title not availableJPH09219561A Title not availableJPH09312418A Title not availableJPH09326534A Title not availableJPH10107317A Title not availableJPH10178026A Title not availableJPH10284507A Title not available* Cited by examinerNon-Patent CitationsReference1Zheleva et al., "Pendeo-Epitaxy-A New Approach for Lateral Growth of GaN Structures," Mrs Internet Journal of Nitride Semiconductor Research, Materials Research Society, Warrendale, Pennsylvania, 4S1, G3.38 (1999) (also presented at "1998 Fall Meeting of the Materials Research Society held in Boston, Massachusetts, Nov. 30-Dec. 4").Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7589001 *Sep 29, 2006Sep 15, 2009Mitsubishi Chemical CorporationSemiconductor base and its manufacturing method, and semiconductor crystal manufacturing methodUS7704860 *Nov 15, 2005Apr 27, 2010Panasonic CorporationNitride-based semiconductor device and method for fabricating the sameUS8652947 *Sep 26, 2007Feb 18, 2014Wang Nang WangNon-polar III-V nitride semiconductor and growth methodUS8828849Jan 17, 2008Sep 9, 2014Nanogan LimitedProduction of single-crystal semiconductor material using a nanostructure templateUS8946772Feb 13, 2009Feb 3, 2015Mitsubishi Chemical CorporationSubstrate for epitaxial growth, process for manufacturing GaN-based semiconductor film, GaN-based semiconductor film, process for manufacturing GaN-based semiconductor light emitting element and GaN-based semiconductor light emitting elementUS20110124139 *May 27, 2010May 26, 2011Chun-Yen ChangMethod for manufacturing free-standing substrate and free-standing light-emitting device* Cited by examinerClassifications U.S. Classification438/481, 438/478, 257/E21.131International ClassificationC30B25/02, C30B29/40, H01L21/20, C30B25/18Cooperative ClassificationC30B25/18, C30B29/403, H01L21/02647, H01L21/0254, H01L33/007, H01L21/02639, H01L21/0237, C30B29/40, H01L21/02642, C30B29/406, C30B25/183, H01L21/0265, H01L21/0262, H01L21/0242, H01L21/02389, C30B25/02European ClassificationC30B29/40B2, H01L21/02K4A1B1, H01L21/02K4E3S7, C30B25/18B, C30B29/40, C30B25/02, C30B25/18, C30B29/40B, H01L21/02K4E3S3M, H01L21/02K4C1B1, H01L21/02K4E3S7P, H01L21/02K4E3S3, H01L21/02K4A1, H01L21/02K4A1JLegal EventsDateCodeEventDescriptionMar 5, 2014FPAYFee paymentYear of fee payment: 8Mar 18, 2010FPAYFee paymentYear of fee payment: 4Sep 12, 2008ASAssignmentOwner name: MITSUBISHI CHEMICAL CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MITSUBISHI CABLE INDUSTRIES, LTD.;REEL/FRAME:021523/0368Effective date: 20080403Mar 20, 2007CCCertificate of correctionRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services