Source: http://www.google.com/patents/US7402851?dq=artistshare
Timestamp: 2017-03-23 20:18:28
Document Index: 601324743

Matched Legal Cases: ['Application No. 2003', '§ 119', 'Application No. 2004', 'Application No. 1020014011708', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 10']

Patent US7402851 - Phase changeable memory devices including nitrogen and/or silicon and ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsPhase-changeable memory devices and method of fabricating phase-changeable memory devices are provided that include a phase-changeable material pattern of a phase-changeable material that may include nitrogen atoms and/or silicon atoms. First and second electrodes are electrically connected to the phase-changeable...http://www.google.com/patents/US7402851?utm_source=gb-gplus-sharePatent US7402851 - Phase changeable memory devices including nitrogen and/or silicon and methods for fabricating the sameAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS7402851 B2Publication typeGrantApplication numberUS 10/910,945Publication dateJul 22, 2008Filing dateAug 4, 2004Priority dateFeb 24, 2003Fee statusPaidAlso published asUS7476917, US20050002227, US20070221906Publication number10910945, 910945, US 7402851 B2, US 7402851B2, US-B2-7402851, US7402851 B2, US7402851B2InventorsHorii Hideki, Bong-Jin Kuh, Yong-ho Ha, Jeong-hee Park, Ji-Hye YiOriginal AssigneeSamsung Electronics Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (53), Non-Patent Citations (5), Referenced by (43), Classifications (32), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetPhase changeable memory devices including nitrogen and/or silicon and methods for fabricating the same
CLAIM OF PRIORITY The present application is a continuation-in-part of and claims priority from U.S. patent application Ser. No. 10/781,597, filed Feb. 18, 2004 now U.S. Pat. No. 7,115,927, which claims priority from Korean Patent Application No. 2003-11416, filed on Feb. 24, 2003, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in its entirety. The present application also claims priority under 35 U.S.C. § 119 from Korean Patent Application No. 2004-12358, filed on Feb. 24, 2004, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.
FIG. 3 is a graph showing resistivity of conventional Ge—Sb—Te and Ge—Sb—Te—N according to certain embodiments of the present invention according to annealing temperatures. The horizontal axis refers to an annealing temperature (° C.), and the vertical axis refers to resistivity (Ωcm). In FIG. 3, -●- represents a resistivity of GST containing 7atomic percent nitrogen and -□- represents a resistivity of conventional GST. Referring to FIG. 3, the resistivity of conventional Ge—Sb—Te reduces to about 2 mΩcm but the resistivity of GST containing 7% nitrogen atoms is measured to be greater that that of conventional GST (about 20 mΩcm). That is, the resistivity of the GST containing nitrogen atoms according to embodiments of the present invention increases about 10 times as high as the conventional one.
Referring again to FIG. 9E, a phase-changeable material layer 121 and a second electrode layer 123 are formed on the lower intermetal interconnection 115 after the first electrode 119 is formed. The phase-changeable material layer 121 contains nitrogen atoms. For example, the phase-changeable material layer 121 may be formed by a sputtering method using nitrogen gas and argon gas as a carrier gas, targeting chalcogenide compounds. In this case, the phase-changeable material layer 121 may be formed at about 100–350° C., for instance. According to certain embodiments of the present invention, the phase-changeable material layer 121 has a polycrystalline state that includes a plurality of small grains of about 100 nm or lesser. In particular embodiments, the phase-changeable material layer 121 has a grain size of about 40 nm or lesser. The phase-changeable material layer 121 includes about 0.25 to about 15 atomic percent nitrogen atoms. The chalcogen compounds may be formed of, for example, Ge—Sb—Te, As—Sb—Te, As—Ge—Sb—Te, Sn—Sb—Te, In—Sn—Sb—Te, Ag—In—Sb—Te, a 5A group element—Sb—Te, a 6A group element—Sb—Te, a 5A group element—Sb—Se, a 6A group—Sb—Se, etc. Therefore, the phase-changeable material layer 121 may be formed of Ge—Sb—Te—N, As—Sb—Te—N, As—Ge—Sb—Te—N, Sn—Sb—Te—N, In—Sn—Sb—Te—N, Ag—In—Sb—Te—N, a 5A group element—Sb—Te—N, a 6A group element—Sb—Te—N, a 5A group element—Sb—Se—N, a 6A group element—Sb—Se—N, etc.
Exemplary embodiments of forming the Ge—Sb—Te—N using sputtering will be explained hereinafter. The Ge—Sb—Te—N is formed to a thickness of from about 100 to about 1000 Å, targeting Ge—Sb—Te, under the condition of 10 mm Torr argon, about 1 mm Torr nitrogen, about 500W DC power and about 100–350° C. The phase-changeable material layer has a polycrystalline state that includes a plurality of small grains (40 nm or lesser) as shown in FIG. 4.
A method of fabricating a Ge—Sb—Te—Si layer will be explained as one example of a chalcogen compound containing silicon. The chalcogen compound containg silicon is formed by a sputtering technique. That is, targeting a silicon-chalcogen compound, the sputtering is carried out using an argon gas of about 30 sccm to about 100 sccm and a nitrogen gas of about 1 sccm to about 10 sccm, in a temperature range of about 100° C. to 350° C. with a power of about 100 watts to about 2000 watts.
A method of forming a Ge—Sb—Te—Si—N layer will be explained as one example of a chalcogen compound containing silicon and nitrogen. That is, targeting a silicon-chalcogen compound (Ge—Sb—Te—Si) including silicon atoms of about 1% to 8%, the sputtering is carried out using an argon gas of about 30 sccm to about 200 sccm and a nitrogen gas of about 0.1 sccm to about 20 sccm, in a temperature range of about 100° C. to about 350° C. with a power of about 100 watts to about 2000 watts.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4499557Jul 6, 1981Feb 12, 1985Energy Conversion Devices, Inc.Programmable cell for use in programmable electronic arraysUS4599705 *Sep 10, 1984Jul 8, 1986Energy Conversion Devices, Inc.Programmable cell for use in programmable electronic arraysUS4653024 *Nov 21, 1984Mar 24, 1987Energy Conversion Devices, Inc.Data storage device including a phase changeable materialUS4820394 *Dec 1, 1986Apr 11, 1989Energy Conversion Devices, Inc.Phase changeable materialUS4845533 *Nov 26, 1986Jul 4, 1989Energy Conversion Devices, Inc.Thin film electrical devices with amorphous carbon electrodes and method of making sameUS4924436Jul 20, 1987May 8, 1990Energy Conversion Devices, Inc.Data storage device having a phase change memory medium reversible by direct overwrite and method of direct overwriteUS5124232Aug 2, 1990Jun 23, 1992Toray Industries, Inc.Optical recording mediumUS5166758 *Jan 18, 1991Nov 24, 1992Energy Conversion Devices, Inc.Electrically erasable phase change memoryUS5278011Apr 28, 1993Jan 11, 1994Matsushita Electric Industrial Co., Ltd.Reversible optical information-recording mediumUS5714768Oct 24, 1995Feb 3, 1998Energy Conversion Devices, Inc.Second-layer phase change memory array on top of a logic deviceUS5811816Aug 7, 1996Sep 22, 1998U.S. Philips CorporationClosed cycle gas cryogenically cooled radiation detectorUS5825046 *Oct 28, 1996Oct 20, 1998Energy Conversion Devices, Inc.Composite memory material comprising a mixture of phase-change memory material and dielectric materialUS6258062Feb 25, 1999Jul 10, 2001Joseph M. ThielenEnclosed container power supply for a needleless injectorUS6381967Nov 24, 1998May 7, 2002Randall H CraigCryogenic freezing of liquidsUS6429064 *Sep 29, 2000Aug 6, 2002Intel CorporationReduced contact area of sidewall conductorUS6437383 *Dec 21, 2000Aug 20, 2002Intel CorporationDual trench isolation for a phase-change memory cell and method of making sameUS6507061Aug 31, 2001Jan 14, 2003Intel CorporationMultiple layer phase-change memoryUS6759267 *Jul 19, 2002Jul 6, 2004Macronix International Co., Ltd.Method for forming a phase change memoryUS6774388 *Dec 5, 2002Aug 10, 2004Ovonyx, Inc.Modified contact for programmable devicesUS6850432Aug 20, 2002Feb 1, 2005Macronix International Co., Ltd.Laser programmable electrically readable phase-change memory method and deviceUS6858277Mar 10, 2000Feb 22, 2005Matsushita Electric Industrial Co., Ltd.Information recording medium and method for manufacturing the sameUS6859389Oct 28, 2003Feb 22, 2005Dai Nippon Printing Co., Ltd.Phase change-type memory element and process for producing the sameUS6864503Aug 9, 2002Mar 8, 2005Macronix International Co., Ltd.Spacer chalcogenide memory method and deviceUS6919578 *Dec 6, 2002Jul 19, 2005Ovonyx, IncUtilizing atomic layer deposition for programmable deviceUS6933031 *Oct 18, 2002Aug 23, 2005Matsushita Electric Industrial Co., Ltd.Optical information recording medium and its manufacturing methodUS7037762May 7, 2003May 2, 2006Samsung Electronics Co., Ltd.Phase changeable memory devices having multi-level data storage elements and methods of fabricating the sameUS7049623 *Dec 13, 2002May 23, 2006Ovonyx, Inc.Vertical elevated pore phase change memoryUS7088670 *Sep 18, 2002Aug 8, 2006Victor Company Of Japan LimitedInformation recording carrier and method of reproducing the sameUS7115927Feb 18, 2004Oct 3, 2006Samsung Electronics Co., Ltd.Phase changeable memory devicesUS7205562 *Dec 13, 2002Apr 17, 2007Intel CorporationPhase change memory and method thereforUS7292521Jun 29, 2006Nov 6, 2007Energy Conversion Devices, Inc.Optical data storage and systems utilizing plasmon lensesUS20020072010 *Mar 10, 2000Jun 13, 2002Masayuki KubogataMethod of manufacturing dielectric layer for use in phase change type optical diskUS20020081804 *Dec 27, 2000Jun 27, 2002Manzur GillPhase-change memory cell using silicon on insulatorUS20020160553 *Feb 14, 2002Oct 31, 2002Hideo YamanakaMethod and apparatus for forming a thin semiconductor film, method and apparatus for producing a semiconductor device, and electro-opitcal apparatusUS20030047762 *Sep 7, 2001Mar 13, 2003Lowrey Tyler A.Phase change material memory deviceUS20030067013 *Sep 4, 2002Apr 10, 2003Kabushiki Kaisha ToshibaPhase change nonvolatile storage device and drive circuitUS20030122170 *Dec 31, 2001Jul 3, 2003Mac ApodacaAdhesion layer for a polymer memory device and method thereforUS20030151041 *Feb 19, 2003Aug 14, 2003Chien ChiangUsing selective deposition to form phase-change memory cellsUS20030165111 *Feb 22, 2002Sep 4, 2003Flynn Kelly DalyPhase change data storage device for multi-level recordingUS20040012009 *Feb 20, 2003Jan 22, 2004Stmicroelectronics S.R.L.Sublithographic contact structure, phase change memory cell with optimized heater shape, and manufacturing method thereofUS20040106065Sep 8, 2003Jun 3, 2004Hitachi Maxell, Ltd.Information-recording mediumUS20040114317 *Dec 13, 2002Jun 17, 2004Chien ChiangForming phase change memoriesUS20040115945 *Dec 13, 2002Jun 17, 2004Lowrey Tyler A.Using an electron beam to write phase change memory devicesUS20040191683Feb 27, 2004Sep 30, 2004Takashi NishiharaInformation recording medium and method for manufacturing the sameUS20040248339Jun 6, 2003Dec 9, 2004Lung Hsiang LanHigh density chalcogenide memory cellsUS20050002227Aug 4, 2004Jan 6, 2005Horii HidekiPhase changeable memory devices including nitrogen and/or silicon and methods for fabricating the sameUS20050115829 *Dec 5, 2002Jun 2, 2005Masataka YahagiSputtering target for phase-change memory, film for phase change memory formed by using the target, and method for producing the targetUS20050227035Apr 4, 2005Oct 13, 2005Hitachi Maxell, Ltd.Information recording mediumUS20070221906May 30, 2007Sep 27, 2007Samsung Electronics Co., Ltd.Phase-Changeable Memory Devices Including Nitrogen and/or Silicon DopantsJPH10340489A Title not availableKR20010111276A Title not availableKR20014011708A Title not availableWO2000054982A1Mar 10, 2000Sep 21, 2000Matsushita Electric Industrial Co., Ltd.Information recording medium and method for manufacturing the same* Cited by examinerNon-Patent CitationsReference1Abstract of Korean Patent Application No. 1020014011708 corresponding to 1020010111276, Abstract Only.2Notice to File a Response/Amendment to the Examination Report corresponding to Korean Application No. 10-2004-0012358 mailed May 24, 2006.3Notice to File a Response/Amendment to the Examination Report corresponding to Korean Patent Application No. 10-2004-0012358 mailed May 24, 2006.4Notice to File a Response/Amendment to the Examination Report corresponding to Korean Patent Application No. 10-2004-12358 mailed Dec. 21, 2005.5Notice to File Response/Amendment to the Examination Report, Korean Application No. 10-2004-0012358, Dec. 21, 2005.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7667218 *Nov 30, 2005Feb 23, 2010Renesas Technology Corp.Semiconductor integrated circuit device and method of manufacturing the sameUS7785976 *Feb 28, 2008Aug 31, 2010Micron Technology, Inc.Method of forming a memory device incorporating a resistance-variable chalcogenide elementUS7943918 *Sep 28, 2009May 17, 2011Samsung Electronics Co., Ltd.Multi-layer phase-changeable memory devicesUS8003971 *Mar 19, 2008Aug 23, 2011Qimonda AgIntegrated circuit including memory element doped with dielectric materialUS8008117Aug 22, 2010Aug 30, 2011Advanced Technology Materials, Inc.Antimony and germanium complexes useful for CVD/ALD of metal thin filmsUS8093140Oct 31, 2008Jan 10, 2012Advanced Technology Materials, Inc.Amorphous Ge/Te deposition processUS8268665Jun 26, 2011Sep 18, 2012Advanced Technology Materials, Inc.Antimony and germanium complexes useful for CVD/ALD of metal thin filmsUS8278139 *Sep 25, 2009Oct 2, 2012Applied Materials, Inc.Passivating glue layer to improve amorphous carbon to metal adhesionUS8288198Mar 12, 2007Oct 16, 2012Advanced Technology Materials, Inc.Low temperature deposition of phase change memory materialsUS8330136Dec 4, 2009Dec 11, 2012Advanced Technology Materials, Inc.High concentration nitrogen-containing germanium telluride based memory devices and processes of makingUS8334186Jun 21, 2010Dec 18, 2012Micron Technology, Inc.Method of forming a memory device incorporating a resistance variable chalcogenide elementUS8410468Jun 28, 2010Apr 2, 2013Advanced Technology Materials, Inc.Hollow GST structure with dielectric fillUS8487288Jul 18, 2011Jul 16, 2013Micron Technology, Inc.Memory device incorporating a resistance variable chalcogenide elementUS8569105Apr 25, 2012Oct 29, 2013Applied Materials, Inc.Passivating glue layer to improve amorphous carbon to metal adhesionUS8617972May 21, 2010Dec 31, 2013Advanced Technology Materials, Inc.Low temperature GST processUS8679894Sep 12, 2012Mar 25, 2014Advanced Technology Materials, Inc.Low temperature deposition of phase change memory materialsUS8709863Sep 18, 2012Apr 29, 2014Advanced Technology Materials, Inc.Antimony and germanium complexes useful for CVD/ALD of metal thin filmsUS8796068Jun 6, 2013Aug 5, 2014Advanced Technology Materials, Inc.Tellurium compounds useful for deposition of tellurium containing materialsUS8834968Dec 7, 2012Sep 16, 2014Samsung Electronics Co., Ltd.Method of forming phase change material layer using Ge(II) source, and method of fabricating phase change memory deviceUS8852686Mar 26, 2012Oct 7, 2014Samsung Electronics Co., Ltd.Method of forming phase change material layer using Ge(II) source, and method of fabricating phase change memory deviceUS9012876May 21, 2010Apr 21, 2015Entegris, Inc.Germanium antimony telluride materials and devices incorporating sameUS9070875Dec 12, 2013Jun 30, 2015Entegris, Inc.Low temperature GST processUS9190609May 21, 2011Nov 17, 2015Entegris, Inc.Germanium antimony telluride materials and devices incorporating sameUS9219232Apr 11, 2014Dec 22, 2015Entegris, Inc.Antimony and germanium complexes useful for CVD/ALD of metal thin filmsUS9337054Jun 27, 2008May 10, 2016Entegris, Inc.Precursors for silicon dioxide gap fillUS9385310Apr 27, 2013Jul 5, 2016Entegris, Inc.Phase change memory structure comprising phase change alloy center-filled with dielectric materialUS9537095Jul 16, 2014Jan 3, 2017Entegris, Inc.Tellurium compounds useful for deposition of tellurium containing materialsUS20060113520 *Nov 30, 2005Jun 1, 2006Renesas Technology Corp.Semiconductor integrated circuit device and method of manufacturing the sameUS20070141786 *Dec 12, 2006Jun 21, 2007Elpida Memory, Inc.Method of manufacturing non-volatile memory elementUS20080206920 *Feb 28, 2008Aug 28, 2008Campbell Kristy APCRAM device with switching glass layerUS20090112009 *Oct 31, 2008Apr 30, 2009Advanced Technology Materials, Inc.Amorphous ge/te deposition processUS20090124039 *Mar 12, 2007May 14, 2009Advanced Technology Materials, Inc.Low temperature deposition of phase change memory materialsUS20090215225 *Feb 24, 2009Aug 27, 2009Advanced Technology Materials, Inc.Tellurium compounds useful for deposition of tellurium containing materialsUS20090237983 *Mar 19, 2008Sep 24, 2009Qimonda AgIntegrated circuit including memory element doped with dielectric materialUS20100019216 *Sep 28, 2009Jan 28, 2010Samsung Electronics Co., Ltd.Multi-layer phase-changeable memory devicesUS20100164057 *Jun 27, 2008Jul 1, 2010Advanced Technology Materials, Inc.Precursors for silicon dioxide gap fillUS20100317150 *Aug 22, 2010Dec 16, 2010Advanced Technology Materials, Inc.Antimony and germanium complexes useful for cvd/ald of metal thin filmsUS20110001107 *Jun 28, 2010Jan 6, 2011Advanced Technology Materials, Inc.Hollow gst structure with dielectric fillUS20110076826 *Sep 25, 2009Mar 31, 2011Applied Materials, Inc.Passivating glue layer to improve amorphous carbon to metal adhesionUS20110124182 *Nov 22, 2010May 26, 2011Advanced Techology Materials, Inc.System for the delivery of germanium-based precursorUS20110180905 *Jun 8, 2009Jul 28, 2011Advanced Technology Materials, Inc.GeSbTe MATERIAL INCLUDING SUPERFLOW LAYER(S), AND USE OF Ge TO PREVENT INTERACTION OF Te FROM SbXTeY AND GeXTeY RESULTING IN HIGH Te CONTENT AND FILM CRYSTALLINITYCN102593349A *Jan 12, 2011Jul 18, 2012中国科学院微电子研究所SixNy-based resistor-type memory and manufacturing method and application thereofWO2013060034A1 *Nov 2, 2011May 2, 2013Huazhong University Of Science And TechnologyStorage material based on silicon doped bismuth-tellurium for phase-changing storage devices and preparation method therefor* Cited by examinerClassifications U.S. Classification257/246, 257/E45.002, 257/758, 257/2, 257/E27.004, 257/3, 257/202, 257/296, 257/248, 257/257, 257/298, 257/4International ClassificationG11C16/02, H01L27/148, H01L27/24, H01L47/00, H01L29/768, H01L45/00, H01L29/02, H01L29/04Cooperative ClassificationG11C2213/79, H01L45/06, H01L45/144, H01L45/1675, H01L27/2436, H01L45/1233, H01L45/1625, G11C13/0004, H01L45/143European ClassificationG11C13/00R1, H01L45/04, H01L27/24Legal EventsDateCodeEventDescriptionOct 18, 2004ASAssignmentOwner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HIDEKI, HORII;KUH, BONG-JIN;HA, YONG-HO;AND OTHERS;REEL/FRAME:015343/0802Effective date: 20040723Oct 21, 2008CCCertificate of correctionSep 21, 2011FPAYFee paymentYear of fee payment: 4Dec 29, 2015FPAYFee 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