Patents by Inventor Li Shu
Li Shu 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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Patent number: 8026503Abstract: A phase-change memory cell structure includes a bottom diode on a substrate; a heating stem on the bottom diode; a first dielectric layer surrounding the heating stem, wherein the first dielectric layer forms a recess around the heating stem; a phase-change storage cap capping the heating stem and the first dielectric layer; and a second dielectric layer covering the first dielectric layer and the phase-change storage cap wherein the second dielectric layer defines an air gap in the recess.Type: GrantFiled: June 23, 2009Date of Patent: September 27, 2011Assignee: Nanya Technology Corp.Inventor: Li-Shu Tu
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Publication number: 20110223739Abstract: A substrate having buried address lines and a first dielectric layer is provided. A conductive electrode is formed in the first conductive layer. A top portion of the conductive electrode is exposed. A second dielectric layer is deposited on surface of the exposed top portion. The second dielectric layer defines a recess around the top portion. A third dielectric layer is deposited over the second dielectric layer. A portion of the third dielectric layer and a portion of the second dielectric layer are removed, thereby exposing a top surface of the top portion of the conductive electrode. The top portion of the conductive electrode is salicidized to form a heating stem. The remaining third dielectric layer is selectively removed from the recess. A phase-change material layer covers the heating stem and the second dielectric layer. The phase-change material layer is etched, thereby forming a phase-change storage cap.Type: ApplicationFiled: May 20, 2011Publication date: September 15, 2011Inventor: Li-Shu Tu
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Patent number: 8012557Abstract: A label assembly and method of using the same to label articles durably, yet removably. In one embodiment, the label assembly is used to label fabric articles, such as clothing, and comprises (a) an image forming laminate for forming an image on the fabric article, the image forming laminate comprising an ink layer, the ink layer being bondable to the fabric article; and (b) an image removing laminate for removing the image from the fabric article, the image removing laminate comprising a remover layer, the remover layer, upon being activated by heat and/or light, being bondable to the ink layer of the image forming laminate; (c) whereby, upon bonding of the image removing laminate to the ink layer, the bonding between the image removing laminate and the ink layer is stronger than the bonding between the ink layer and the fabric article.Type: GrantFiled: July 16, 2010Date of Patent: September 6, 2011Assignee: Avery Dennison CorporationInventors: Dong-Tsai Hseih, Kuolih Tsai, Yi-Hung Chiao, Xiao-Ming He, Li Shu, Ramin Heydarpour, Alan Morgenthau
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Patent number: 7948931Abstract: An apparatus and method for transmitting a file via a communications network predicts a location where a destination node will be at upon arrival of a message unit relayed via the network. An intermediate node is selected for relaying the message unit between a source node and the destination node in response to the predicted location of the destination node. The apparatus may include a location prediction processor and a relay node selector.Type: GrantFiled: March 1, 2004Date of Patent: May 24, 2011Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Li Shu, John J. Turkovich
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Publication number: 20110079651Abstract: A method for labeling fabrics, such as fabric garments, and a heat-transfer label well-suited for use in the method. In one embodiment, the heat-transfer label includes (a) a support portion; and (b) a transfer portion, the transfer portion being positioned over the support portion for transfer of the transfer portion from the support portion to an article of fabric under conditions of heat and pressure, the transfer portion including (i) an ink design layer; (ii) a heat-activatable adhesive layer; and (iii) an RFID device.Type: ApplicationFiled: September 22, 2010Publication date: April 7, 2011Inventors: Kuolih Tsai, Dong-Tsai Hseih, Li Shu, David N. Edwards, Alan Morgenthau, Yi-Hung Chiao, Xiao-Ming He, Yukihiko Sasaki, Scott Wayne Ferguson
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Patent number: 7906189Abstract: A method for labeling fabrics, such as fabric garments, and a heat-transfer label (311) well-suited for use in said method. In one embodiment, the heat-transfer label (311) comprises (i) a support portion (313), the support portion (313) comprising a carrier (315) and a release layer (317); (ii) a wax layer (319), the wax layer overcoating the release layer (317); and (iii) a transfer portion (321), the transfer portion (321) comprising an adhesive layer (323) printed directly onto the wax layer (319) and an ink design layer (325) printed directly onto the adhesive layer (323). Each of the adhesive layer (323) and the ink design layer includes a non-cross-linked PVC resin. The ink design layer may be screen printed onto the adhesive layer (323) or may be printed onto the adhesive layer (323) using thermal transfer printing, ink jet printing or laser printing.Type: GrantFiled: December 2, 2003Date of Patent: March 15, 2011Assignee: Avery Dennison CorporationInventors: Kuolih Tsai, Dong-Tsai Hseih, Li Shu, David N. Edwards, Alan Morgenthau, Yi-Hung Chiao, Xiao-Ming He, Yukihiko Sasaki, Scott Wayne Ferguson
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Publication number: 20110027546Abstract: A label assembly and method of using the same to label articles durably, yet removably. In one embodiment, the label assembly is used to label fabric articles, such as clothing, and comprises (a) an image forming laminate for forming an image on the fabric article, the image forming laminate comprising an ink layer, the ink layer being bondable to the fabric article; and (b) an image removing laminate for removing the image from the fabric article, the image removing laminate comprising a remover layer, the remover layer, upon being activated by heat and/or light, being bondable to the ink layer of the image forming laminate; (c) whereby, upon bonding of the image removing laminate to the ink layer, the bonding between the image removing laminate and the ink layer is stronger than the bonding between the ink layer and the fabric article.Type: ApplicationFiled: July 16, 2010Publication date: February 3, 2011Inventors: Dong-Tsai Hseih, Kuolih Tsai, Yi-Hung Chiao, Xiao-Ming He, Li Shu, Ramin Heydarpour, Alan Morgenthau
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Publication number: 20100320435Abstract: A phase-change memory cell structure includes a bottom diode on a substrate; a heating stem on the bottom diode; a first dielectric layer surrounding the heating stem, wherein the first dielectric layer forms a recess around the heating stem; a phase-change storage cap capping the heating stem and the first dielectric layer; and a second dielectric layer covering the first dielectric layer and the phase-change storage cap wherein the second dielectric layer defines an air gap in the recess.Type: ApplicationFiled: June 23, 2009Publication date: December 23, 2010Inventor: Li-Shu Tu
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Patent number: 7758938Abstract: A label assembly and method of using the same to label articles durably, yet removably. In one embodiment, the label assembly is used to label fabric articles, such as clothing, and comprises (a) an image forming laminate for forming an image on the fabric article, the image forming laminate comprising an ink layer, the ink layer being bondable to the fabric article; and (b) an image removing laminate for removing the image from the fabric article, the image removing laminate comprising a remover layer, the remover layer, upon being activated by heat and/or light, being bondable to the ink layer of the image forming laminate; (c) whereby, upon bonding of the image removing laminate to the ink layer, the bonding between the image removing laminate and the ink layer is stronger than the bonding between the ink layer and the fabric article.Type: GrantFiled: January 9, 2004Date of Patent: July 20, 2010Assignee: Avery Dennison CorporationInventors: Dong-Tsai Hseih, Kuolih Tsai, Yi-Hung Chiao, Xiao-Ming He, Li Shu, Ramin Heydarpour, Alan Morgenthau
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Publication number: 20100163828Abstract: A phase change memory device is provided, including a semiconductor substrate with a first conductive semiconductor layer disposed thereover, wherein the first conductive semiconductor layer has a first conductivity type. A first dielectric layer is disposed over the semiconductor substrate. A second conductive semiconductor layer having a second conductivity type opposite to the first conductivity type is disposed in the first dielectric layer. A heating electrode is disposed in the first dielectric layer and formed over the second conductive semiconductor layer, wherein the heating electrode has a tapered cross section and includes metal silicide. A second dielectric layer is disposed over the first dielectric layer. A phase change material layer is disposed in the second dielectric layer. An electrode is disposed over the second dielectric layer, covering the phase change material layer.Type: ApplicationFiled: May 11, 2009Publication date: July 1, 2010Applicants: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, POWERCHIP SEMICONDUCTOR CORP., NANYA TECHNOLOGY CORPORATION, PROMOS TECHNOLOGIES INC., WINBOND ELECTRONICS CORP.Inventor: Li-Shu Tu
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Patent number: 7675054Abstract: Phase change memory devices and methods for fabricating the same are provided. A phase change memory device includes a first conductive electrode disposed in a first dielectric layer. A second dielectric layer is disposed over the first dielectric layer. A phase change material layer is disposed in the second dielectric layer and electrically connected to the first conductive electrode. A space is disposed in the second dielectric layer to at least isolate a sidewall of the phase change material layer and the second dielectric layer adjacent thereto. A second conductive electrode is disposed in the second dielectric layer and electrically connected to the phase change material layer.Type: GrantFiled: January 17, 2008Date of Patent: March 9, 2010Assignees: Industrial Technology Research Institute, Powerchip Semiconductor Corp., Nanya Technology Corporation, ProMOS Technologies Inc., Winbond Electronics Corp.Inventor: Li-Shu Tu
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Patent number: 7667242Abstract: Systems and methods for maximizing the breakdown voltage of a semiconductor device are described. In a multiple floating guard ring design, the spacing between two consecutive sets of floating guard rings may increase with their distance from the main junction while maintaining depletion region overlap, thereby alleviating crowding and optimally spreading the electric field leading to a breakdown voltage that is close to the intrinsic material limit. In another exemplary embodiment, fabrication of floating guard rings simultaneously with the formation of another semiconductor feature allows precise positioning of the first floating guard ring with respect to the edge of a main junction, as well as precise control of floating guard ring widths and spacings. In yet another exemplary embodiment, design of the vertical separation between doped regions of a semiconductor device adjusts the device's gate-to-source breakdown voltage without affecting the device's pinch-off voltage.Type: GrantFiled: November 17, 2006Date of Patent: February 23, 2010Assignee: Northrop Grumman Systems CorporationInventors: John V. Veliadis, Eric Jonathan Stewart, Megan Jean McCoy, Li-Shu Chen, Ty Richard McNutt
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Patent number: 7547586Abstract: A method of making a semiconductor structure for use in a static induction transistor. Three layers of a SiC material are on a substrate with the top layer covered with a thick oxide. A mask having a plurality of strips is deposited on the top of the oxide to protect the area underneath it, and an etch removes the oxide, the third layer and a small amount of the second layer, leaving a plurality of pillars. An oxidation step grows an oxide skirt around the base of each pillar and consumes the edge portions of the third layer under the oxide to form a source. An ion implantation forms gate regions between the skirts. At the same time, a plurality of guard rings is formed. Removal of all oxide results in a semiconductor structure to which source, gate and drain connections may be made to form a static induction transistor. A greater separation between a source and gate is obtained by placing a spacer layer on the sidewalls of the pillars, either before or after formation of the skirt.Type: GrantFiled: June 2, 2006Date of Patent: June 16, 2009Assignee: Northrop Grumman CorpInventor: Li-Shu Chen
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Publication number: 20090101880Abstract: An exemplary memory device includes a first dielectric layer with a first conductive contact therein. A phase change material (PCM) is disposed on top of the first dielectric layer and provided with an insulating layer integrally on a top surface of the PCM. A first electrode is disposed over the first dielectric layer and covered a portion of the first conductive contact and the insulating layer in a first direction, contacting to the first conductive contact and a first side of the PCM. A second electrode is disposed over the first dielectric layer and covered a portion of the insulating layer in a second direction, contacting to a second side of the PCM. A second dielectric layer is disposed over the first dielectric layer to cover the first electrode, the second electrode, the insulating layer and the PCM, including a second conductive contact connected to the second electrode.Type: ApplicationFiled: December 26, 2007Publication date: April 23, 2009Applicants: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, POWERCHIP SEMICONDUCTOR CORP., NANYA TECHNOLOGY CORPORATION, PROMOS TECHNOLOGIES INC., WINBOND ELECTRONICS CORP.Inventor: Li-Shu Tu
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Publication number: 20090101884Abstract: Phase change memory devices and methods for fabricating the same are provided. A phase change memory device includes a first conductive electrode disposed in a first dielectric layer. A second dielectric layer is disposed over the first dielectric layer. A phase change material layer is disposed in the second dielectric layer and electrically connected to the first conductive electrode. A space is disposed in the second dielectric layer to at least isolate a sidewall of the phase change material layer and the second dielectric layer adjacent thereto. A second conductive electrode is disposed in the second dielectric layer and electrically connected to the phase change material layer.Type: ApplicationFiled: January 17, 2008Publication date: April 23, 2009Applicants: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, POWERCHIP SEMICONDUCTOR CORP., NANYA TECHNOLOGY CORPORATION, PROMOS TECHNOLOGIES INC., WINBOND ELECTRONICS CORP.Inventor: Li-Shu Tu
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Publication number: 20080128913Abstract: In one embodiment, the disclosure relates to a method for forming a semiconductor power device by depositing a first layer of TiW on a gate region and a source region, depositing a second layer of refractory metal over the first layer of TiW at the gate region, depositing a dielectric stack over the second layer of refractory metal and a portion of the first layer of TiW, depositing an etch stop layer over a portion of the dielectric stack, depositing an interconnect layer over the etch stop layer and the dielectric stack and depositing an etch mask over the interconnect layer.Type: ApplicationFiled: October 25, 2007Publication date: June 5, 2008Applicant: Northrop Grumman Systems CorporationInventors: Li-Shu Chen, Philip C. Smith, Steven M. Buchoff, Joel Frederick Rosenbaum, Joel Barry Schneider, Witold J. Malkowski
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Patent number: 7372087Abstract: A structure for use in a static induction transistor includes a semiconductor body having first and second semiconductor layers on a substrate, with the second layer having a dopant concentration of around an order of magnitude higher than the dopant concentration of the first layer. A plurality of sources are located on the second layer. A plurality of gates are ion implanted in the second layer, an end one of the gates being connected to all of the plurality of gates and constituting a gate bus. The gate bus has an extension connecting the gate bus in the second layer of higher dopant concentration to the first layer of lower dopant concentration. The extension is ion implanted in either a series of steps or a sloping surface which is formed in the first and second layers.Type: GrantFiled: June 1, 2006Date of Patent: May 13, 2008Assignee: Northrop Grumman CorporationInventors: Li-Shu Chen, Victor Veliadis
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Publication number: 20080006848Abstract: A structure for use in a static induction transistor includes a semiconductor body having first and second semiconductor layers on a substrate, with the second layer having a dopant concentration of around an order of magnitude higher than the dopant concentration of the first layer. A plurality of sources are located on the second layer. A plurality of gates are ion implanted in the second layer, an end one of the gates being connected to all of the plurality of gates and constituting a gate bus. The gate bus has an extension connecting the gate bus in the second layer of higher dopant concentration to the first layer of lower dopant concentration. The extension is ion implanted in either a series of steps or a sloping surface which is formed in the first and second layers.Type: ApplicationFiled: June 1, 2006Publication date: January 10, 2008Inventors: Li-Shu Chen, Victor Veliadis
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Publication number: 20070281406Abstract: A method of making a semiconductor structure for use in a static induction transistor. Three layers of a SiC material are on a substrate with the top layer covered with a thick oxide. A mask having a plurality of strips is deposited on the top of the oxide to protect the area underneath it, and an etch removes the oxide, the third layer and a small amount of the second layer, leaving a plurality of pillars. An oxidation step grows an oxide skirt around the base of each pillar and consumes the edge portions of the third layer under the oxide to form a source. An ion implantation forms gate regions between the skirts. At the same time, a plurality of guard rings is formed. Removal of all oxide results in a semiconductor structure to which source, gate and drain connections may be made to form a static induction transistor.Type: ApplicationFiled: June 2, 2006Publication date: December 6, 2007Inventor: Li-Shu Chen
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Patent number: D598020Type: GrantFiled: May 1, 2009Date of Patent: August 11, 2009Assignee: Tatung Technology Inc.Inventors: Ming-Yih Lu, Han Chung Chang, Li Shu Chen, Chih Hsin Chen