Patents by Inventor Qiqing C. Ouyang
Qiqing C. Ouyang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140183605Abstract: A method of manufacturing a semiconductor device includes forming a plurality of fin structures on a substrate, the plurality of fin structures including a diffusion region, forming an epitaxial layer on the plurality of fin structures in an area of the diffusion region such that a height of the upper surface of the epitaxial layer over plurality of fin structures is substantially equal to the height of the upper surface of the epitaxial layer between the plurality of fin structures, and planarizing the upper surface of the epitaxial layer by one of etch back and reflow annealing.Type: ApplicationFiled: December 27, 2013Publication date: July 3, 2014Applicants: International Business Machines Corporation, Renesas Electronics CorporationInventors: Shogo Mochizuki, Gen Tsutsui, Raghavasimhan Sreenivasan, Pranita Kerver, Qiqing C. Ouyang, Alexander Reznicek
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Publication number: 20140103451Abstract: A fin field-effect transistor (finFET) assembly includes a first finFET device having fins of a first height and a second finFET device having fins of a second height. Each of the first and second finFET devices includes an epitaxial fill material covering source and drain regions of the first and second finFET devices. The epitaxial fill material of the first finFET device has a same height as the epitaxial fill material of the second finFET device.Type: ApplicationFiled: October 17, 2012Publication date: April 17, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Qiqing C. Ouyang, Pranita Kerber, Alexander Reznicek
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Patent number: 8587063Abstract: A semiconductor wafer structure for integrated circuit devices includes a bulk substrate; a lower insulating layer formed on the bulk substrate; an electrically conductive back gate layer formed on the lower insulating layer; an upper insulating layer formed on the back gate layer; and a hybrid semiconductor-on-insulator layer formed on the upper insulating layer, the hybrid semiconductor-on-insulator layer comprising a first portion having a first crystal orientation and a second portion having a second crystal orientation.Type: GrantFiled: November 6, 2009Date of Patent: November 19, 2013Assignee: International Business Machines CorporationInventors: Robert H. Dennard, Qiqing C. Ouyang, Jeng-Bang Yau
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Publication number: 20120208356Abstract: Disclosed is an imaging method for patterning component shapes (e.g., fins, gate electrodes, etc.) into a substrate. By conducting a trim step prior to performing either an additive or subtractive sidewall image transfer process, the method avoids the formation of a loop pattern in a hard mask and, thus, avoids a post-SIT process trim step requiring alignment of a trim mask to sub-lithographic features to form a hard mask pattern with the discrete segments. In one embodiment a hard mask is trimmed prior to conducting an additive SIT process so that a loop pattern is not formed. In another embodiment an oxide layer and memory layer that are used to form a mandrel are trimmed prior to the conducting a subtractive SIT process. A mask is then used to protect portions of the mandrel during etch back of the oxide layer so that a loop pattern is not formed.Type: ApplicationFiled: April 26, 2012Publication date: August 16, 2012Applicant: International Business Machines CorporationInventors: Toshiharu Furukawa, David V. Horak, Charles W. Koburger, III, Qiqing C. Ouyang
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Patent number: 8063424Abstract: An embedded photodetector apparatus for a three-dimensional complementary metal oxide semiconductor (CMOS) stacked chip assembly having a CMOS chip and one or more thinned CMOS layers is provided. At least one of the one or more thinned CMOS layers includes an active photodiode area defined within the one or more thinned CMOS layers, the active photodiode area being receptive of an optical signal incident thereon, and the active photodiode area comprising a bulk substrate portion of the thinned CMOS layer. The bulk substrate portion has a diode photodetector formed therein.Type: GrantFiled: November 16, 2009Date of Patent: November 22, 2011Assignee: International Business Machines CorporationInventors: Fadi H. Gebara, Tak H. Ning, Qiqing C. Ouyang, Jeremy D. Schaub
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Patent number: 7968946Abstract: A semiconductor (e.g., complementary metal oxide semiconductor (CMOS)) structure formed on a (110) substrate that has improved performance, in terms of mobility enhancement is provided. In accordance with the present invention, the inventive structure includes at least one of a single tensile stressed liner, a compressively stressed shallow trench isolation (STI) region, or a tensile stressed embedded well, which is used in conjunction with the (110) substrate to improve carrier mobility of both nFETs and pFETs. The present invention also relates to a method of providing such structures.Type: GrantFiled: May 16, 2008Date of Patent: June 28, 2011Assignee: International Business Machines CorporationInventors: Massimo V. Fischetti, Qiqing C. Ouyang
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Publication number: 20110115004Abstract: An embedded photodetector apparatus for a three-dimensional complementary metal oxide semiconductor (CMOS) stacked chip assembly having a CMOS chip and one or more thinned CMOS layers is provided. At least one of the one or more thinned CMOS layers includes an active photodiode area defined within the one or more thinned CMOS layers, the active photodiode area being receptive of an optical signal incident thereon, and the active photodiode area comprising a bulk substrate portion of the thinned CMOS layer. The bulk substrate portion has a diode photodetector formed therein.Type: ApplicationFiled: November 16, 2009Publication date: May 19, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Fadi H. Gebara, Tak H. Ning, Qiqing C. Ouyang, Jeremy D. Schaub
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Publication number: 20110108943Abstract: A semiconductor wafer structure for integrated circuit devices includes a bulk substrate; a lower insulating layer formed on the bulk substrate; an electrically conductive back gate layer formed on the lower insulating layer; an upper insulating layer formed on the back gate layer; and a hybrid semiconductor-on-insulator layer formed on the upper insulating layer, the hybrid semiconductor-on-insulator layer comprising a first portion having a first crystal orientation and a second portion having a second crystal orientation.Type: ApplicationFiled: November 6, 2009Publication date: May 12, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Robert H. Dennard, Qiqing C. Ouyang, Jeng-Bang Yau
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Patent number: 7863197Abstract: A method for fabricating the semiconductor structure include a semiconductor substrate having a cross-section hourglass shaped channel region. A stress imparting layer is located adjacent the channel region. The hourglass shape may provide for enhanced vertical tensile stress within the channel region when it is longitudinally compressive stressed by the stress imparting layer.Type: GrantFiled: January 9, 2006Date of Patent: January 4, 2011Assignee: International Business Machines CorporationInventors: Huajie Chen, Dureseti Chidambarrao, Judson R. Holt, Qiqing C. Ouyang, Siddhartha Panda
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Patent number: 7705345Abstract: A strained Fin Field Effect Transistor (FinFET) (and method for forming the same) includes a relaxed first material having a sidewall, and a strained second material formed on the sidewall of the first material. The relaxed first material and the strained second material form a fin of the FinFET.Type: GrantFiled: January 7, 2004Date of Patent: April 27, 2010Assignee: International Business Machines CorporationInventors: Stephen W. Bedell, Kevin K. Chan, Dureseti Chidambarrao, Silke H. Christianson, Jack O. Chu, Anthony G. Domenicucci, Kam-Leung Lee, Anda C. Mocuta, John A. Ott, Qiqing C. Ouyang
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Patent number: 7687829Abstract: A semiconductor structure having improved carrier mobility is provided. The semiconductor structures includes a hybrid oriented semiconductor substrate having at least two planar surfaces of different crystallographic orientation, and at least one CMOS device located on each of the planar surfaces of different crystallographic orientation, wherein each CMOS device has a stressed channel. The present invention also provides methods of fabricating the same. In general terms, the inventive method includes providing a hybrid oriented substrate having at least two planar surfaces of different crystallographic orientation, and forming at least one CMOS device on each of the planar surfaces of different crystallographic orientation, wherein each CMOS device has a stressed channel.Type: GrantFiled: June 23, 2008Date of Patent: March 30, 2010Assignee: International Business Machines CorporationInventors: Dureseti Chidambarrao, Judson R. Holt, Meikei Ieong, Qiqing C. Ouyang, Siddhartha Panda
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Patent number: 7618857Abstract: A method for reducing STI processing induced stress on a substrate during fabrication of a MOSFET. The method includes providing a substrate, wells (including dopants), and STIs in an upper layer of the substrate. A layer of an oxide substance is formed on a top surface of the upper layer of the substrate covering the STIs. A layer of a nitride substance is formed over the oxide layer. The substrate is annealed using temperatures greater than 1000° C. to activate the dopants in the wells which results in less stress on the STIs and hence less stress in the channels because of the nitride substance layer. The nitride and oxide substance layers are then stripped off the substrate, and CMOS fabrication is continued. The low stress remains in the channels if the thermal budget in following processes are low by using low temperature RTA and/or laser anneal.Type: GrantFiled: January 17, 2007Date of Patent: November 17, 2009Assignee: International Business Machines CorporationInventors: Meikei Leong, Qiqing C. Ouyang, Chun-Yung Sung
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Patent number: 7619300Abstract: The present invention provides semiconductor structures comprised of stressed channels on hybrid oriented. In particular, the semiconductor structures include a first active area having a first stressed semiconductor surface layer of a first crystallographic orientation located on a surface of a buried insulating material and a second active area having a second stressed semiconductor surface layer of a second crystallographic orientation located on a surface of a dielectric material. A trench isolation region is located between the first and second active area, and the trench isolation region is partially filled with a trench dielectric material and the dielectric material that is present underneath said second stressed semiconductor surface layer.Type: GrantFiled: May 1, 2009Date of Patent: November 17, 2009Assignee: International Business Machines CorporationInventors: Meikei Ieong, Qiqing C. Ouyang
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Patent number: 7598147Abstract: A method of forming crystalline Si:C in source and drain regions is provided. After formation of shallow trench isolation and gate electrodes of field effect transistors, gate spacers are formed on gate electrodes. Preamorphization implantation is performed in the source and drain regions, followed by carbon implantation. The upper portion of the source and drain regions comprises an amorphous mixture of silicon, germanium, and/or carbon. An anti-reflective layer is deposited to enhance the absorption of a laser beam into the silicon substrate. The laser beam is scanned over the silicon substrate including the upper source and drain region with the amorphous mixture. The energy of the laser beam is controlled so that the temperature of the semiconductor substrate is above the melting temperature of the amorphous mixture but below the glass transition temperature of silicon oxide so that structural integrity of the semiconductor structure is preserved.Type: GrantFiled: September 24, 2007Date of Patent: October 6, 2009Assignee: International Business Machines CorporationInventors: Yaocheng Liu, Qiqing C. Ouyang, Kathryn T. Schonenberg, Chun-Yung Sung
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Publication number: 20090212329Abstract: The present invention provides semiconductor structures comprised of stressed channels on hybrid oriented. In particular, the semiconductor structures include a first active area having a first stressed semiconductor surface layer of a first crystallographic orientation located on a surface of a buried insulating material and a second active area having a second stressed semiconductor surface layer of a second crystallographic orientation located on a surface of a dielectric material. A trench isolation region is located between the first and second active area, and the trench isolation region is partially filled with a trench dielectric material and the dielectric material that is present underneath said second stressed semiconductor surface layer.Type: ApplicationFiled: May 1, 2009Publication date: August 27, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Meikei Ieong, Qiqing C. Ouyang
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Patent number: 7547641Abstract: The present invention provides semiconductor structures comprised of stressed channels on hybrid oriented. In particular, the semiconductor structures include a first active area having a first stressed semiconductor surface layer of a first crystallographic orientation located on a surface of a buried insulating material and a second active area having a second stressed semiconductor surface layer of a second crystallographic orientation located on a surface of a dielectric material. A trench isolation region is located between the first and second active area, and the trench isolation region is partially filled with a trench dielectric material and the dielectric material that is present underneath said second stressed semiconductor surface layer.Type: GrantFiled: June 5, 2007Date of Patent: June 16, 2009Assignee: International Business Machines CorporationInventors: Meikei Ieong, Qiqing C. Ouyang
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Patent number: 7528050Abstract: The present invention provides a semiconductor structure that includes a high performance field effect transistor (FET) on a semiconductor-on-insulator (SOI) in which the insulator thereof is a stress-inducing material of a preselected geometry. Such a structure achieves performance enhancement from uniaxial stress, and the stress in the channel is not dependent on the layout design of the local contacts. In broad terms, the present invention relates to a semiconductor structure that comprises an upper semiconductor layer and a bottom semiconductor layer, wherein said upper semiconductor layer is separated from said bottom semiconductor layer in at least one region by a stress-inducing insulator having a preselected geometric shape, said stress-inducing insulator exerting a strain on the upper semiconductor layer.Type: GrantFiled: May 5, 2008Date of Patent: May 5, 2009Assignee: International Business Machines CorporationInventors: Judson R. Holt, Qiqing C. Ouyang
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Publication number: 20090081836Abstract: A method of forming crystalline Si:C in source and drain regions is provided. After formation of shallow trench isolation and gate electrodes of field effect transistors, gate spacers are formed on gate electrodes. Preamorphization implantation is performed in the source and drain regions, followed by carbon implantation. The upper portion of the source and drain regions comprises an amorphous mixture of silicon, germanium, and/or carbon. An anti-reflective layer is deposited to enhance the absorption of a laser beam into the silicon substrate. The laser beam is scanned over the silicon substrate including the upper source and drain region with the amorphous mixture. The energy of the laser beam is controlled so that the temperature of the semiconductor substrate is above the melting temperature of the amorphous mixture but below the glass transition temperature of silicon oxide so that structural integrity of the semiconductor structure is preserved.Type: ApplicationFiled: September 24, 2007Publication date: March 26, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Yaocheng Liu, Qiqing C. Ouyang, Kathryn T. Schonenberg, Chun-Yung Sung
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Publication number: 20080303090Abstract: The present invention provides semiconductor structures comprised of stressed channels on hybrid oriented. In particular, the semiconductor structures include a first active area having a first stressed semiconductor surface layer of a first crystallographic orientation located on a surface of a buried insulating material and a second active area having a second stressed semiconductor surface layer of a second crystallographic orientation located on a surface of a dielectric material. A trench isolation region is located between the first and second active area, and the trench isolation region is partially filled with a trench dielectric material and the dielectric material that is present underneath said second stressed semiconductor surface layer.Type: ApplicationFiled: June 5, 2007Publication date: December 11, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Meikei Ieong, Qiqing C. Ouyang
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Publication number: 20080251817Abstract: A semiconductor structure having improved carrier mobility is provided. The semiconductor structures includes a hybrid oriented semiconductor substrate having at least two planar surfaces of different crystallographic orientation, and at least one CMOS device located on each of the planar surfaces of different crystallographic orientation, wherein each CMOS device has a stressed channel. The present invention also provides methods of fabricating the same. In general terms, the inventive method includes providing a hybrid oriented substrate having at least two planar surfaces of different crystallographic orientation, and forming at least one CMOS device on each of the planar surfaces of different crystallographic orientation, wherein each CMOS device has a stressed channel.Type: ApplicationFiled: June 23, 2008Publication date: October 16, 2008Applicant: International Business Machines CorporationInventors: Dureseti Chidambarrao, Judson R. Holt, Meikei Ieong, Qiqing C. Ouyang, Siddhartha Panda