With Polysilicon Interconnections To Source Or Drain Regions (e.g., Polysilicon Laminated With Silicide) Patents (Class 257/377)
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Patent number: 12148752Abstract: The present disclosure describes a method for forming (i) input/output (I/O) fin field effect transistors (FET) with polysilicon gate electrodes and silicon oxide gate dielectrics integrated and (ii) non-I/O FETs with metal gate electrodes and high-k gate dielectrics. The method includes depositing a silicon oxide layer on a first region of a semiconductor substrate and a high-k dielectric layer on a second region of the semiconductor substrate; depositing a polysilicon layer on the silicon oxide and high-k dielectric layers; patterning the polysilicon layer to form a first polysilicon gate electrode structure on the silicon oxide layer and a second polysilicon gate electrode structure on the high-k dielectric layer, where the first polysilicon gate electrode structure is wider than the second polysilicon gate electrode structure and narrower than the silicon oxide layer. The method further includes replacing the second polysilicon gate electrode structure with a metal gate electrode structure.Type: GrantFiled: July 26, 2022Date of Patent: November 19, 2024Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Meng-Han Lin, Wen-Tuo Huang, Yong-Shiuan Tsair
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Patent number: 12142602Abstract: A light emitting device including a first LED sub-unit having a thickness in a first direction, a second LED sub-unit disposed on a portion of the first LED sub-unit in the first direction, each of the first and second LED sub-units comprising a first-type semiconductor layer, a second-type semiconductor layer, and an active layer, a reflective electrode disposed adjacent to the first LED sub-unit and electrically connected to the first-type semiconductor layer of the first LED sub-unit, and a first ohmic electrode forming ohmic contact with the second-type semiconductor layer of the first LED sub-unit, in which the active layer of the first LED sub-unit is configured to generate light, includes AlxGa(1-x-y)InyP (0?x?1, 0?y?1), and overlaps the active layer of the second LED sub-unit in the first direction, and the active layer of the second LED sub-unit includes the same material as the active layer of the first LED sub-unit.Type: GrantFiled: June 20, 2022Date of Patent: November 12, 2024Assignee: Seoul Viosys Co., Ltd.Inventors: Jong Hyeon Chae, Chang Yeon Kim, Ho Joon Lee, Seong Gyu Jang, Chung Hoon Lee, Dae Sung Cho
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Patent number: 12027415Abstract: In one exemplary aspect, a method for semiconductor manufacturing comprises forming first and second silicon nitride features on sidewall surfaces of a contact hole, where the contact hole is disposed in a dielectric layer and above a source/drain (S/D) feature. The method further comprises forming a contact plug in the contact hole, the contact plug being electrically coupled to the S/D feature, removing a top portion of the contact plug to create a recess in the contact hole, forming a hard mask layer in the recess, and removing the first and second silicon nitride features via selective etching to form first and second air gaps, respectively.Type: GrantFiled: July 26, 2022Date of Patent: July 2, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Hsin-Che Chiang, Ju-Li Huang, Chun-Sheng Liang, Jeng-Ya Yeh
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Patent number: 11942475Abstract: The present disclosure describes a method for forming (i) input/output (I/O) fin field effect transistors (FET) with polysilicon gate electrodes and silicon oxide gate dielectrics integrated and (ii) non-I/O FETs with metal gate electrodes and high-k gate dielectrics. The method includes depositing a silicon oxide layer on a first region of a semiconductor substrate and a high-k dielectric layer on a second region of the semiconductor substrate; depositing a polysilicon layer on the silicon oxide and high-k dielectric layers; patterning the polysilicon layer to form a first polysilicon gate electrode structure on the silicon oxide layer and a second polysilicon gate electrode structure on the high-k dielectric layer, where the first polysilicon gate electrode structure is wider than the second polysilicon gate electrode structure and narrower than the silicon oxide layer. The method further includes replacing the second polysilicon gate electrode structure with a metal gate electrode structure.Type: GrantFiled: October 18, 2019Date of Patent: March 26, 2024Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Meng-Han Lin, Wen-Tuo Huang, Yong-Shiuan Tsair
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Patent number: 11664431Abstract: The present disclosure relates to a transistor device. The transistor device includes a plurality of first source/drain contacts disposed over a substrate. A plurality of gate structures are disposed over the substrate between the plurality of first source/drain contacts. The plurality of gate structures wrap around the plurality of first source/drain contacts in a plurality of closed loops. A second source/drain contact is disposed over the substrate between the plurality of gate structures. The second source/drain contact continuously wraps around the plurality of gate structures as a continuous structure.Type: GrantFiled: January 8, 2021Date of Patent: May 30, 2023Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Aurelien Gauthier Brun, Chun Lin Tsai, Jiun-Lei Jerry Yu, Po-Chih Chen, Yun-Hsiang Wang
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Patent number: 11532553Abstract: A semiconductor structure is disclosed that includes a first conductive line, a first conductive segment, a second conductive segment, and a gate. The first conductive segment is electrically coupled to the first conductive line through a conductive via. The second conductive segment is configured to electrically couple the first conductive segment with a third conductive segment disposed over an active area. The gate is disposed under the second conductive segment and disposed between first conductive segment and the third conductive segment. The first conductive line and the second conductive segment are disposed at two sides of the conductive via respectively. A length of the first conductive segment is greater than a length of the third conductive segment.Type: GrantFiled: December 23, 2020Date of Patent: December 20, 2022Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Meng-Hung Shen, Chih-Liang Chen, Charles Chew-Yuen Young, Jiann-Tyng Tzeng, Kam-Tou Sio, Wei-Cheng Lin
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Patent number: 11476156Abstract: In one exemplary aspect, a method for semiconductor manufacturing comprises forming first and second silicon nitride features on sidewall surfaces of a contact hole, where the contact hole is disposed in a dielectric layer and above a source/drain (S/D) feature. The method further comprises forming a contact plug in the contact hole, the contact plug being electrically coupled to the S/D feature, removing a top portion of the contact plug to create a recess in the contact hole, forming a hard mask layer in the recess, and removing the first and second silicon nitride features via selective etching to form first and second air gaps, respectively.Type: GrantFiled: August 24, 2020Date of Patent: October 18, 2022Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Hsin-Che Chiang, Ju-Li Huang, Chun-Sheng Liang, Jeng-Ya Yeh
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Patent number: 10879173Abstract: A semiconductor structure is disclosed that includes a first conductive line, a first conductive segment, a second conductive segment, and a gate. The first conductive segment is electrically coupled to the first conductive line through a conductive via. The second conductive segment is configured to electrically couple the first conductive segment with a third conductive segment disposed over an active area. The gate is disposed under the second conductive segment and disposed between first conductive segment and the third conductive segment. The first conductive line and the second conductive segment are disposed at two sides of the conductive via respectively.Type: GrantFiled: January 31, 2019Date of Patent: December 29, 2020Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Meng-Hung Shen, Chih-Liang Chen, Charles Chew-Yuen Young, Jiann-Tyng Tzeng, Kam-Tou Sio, Wei-Cheng Lin
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Patent number: 10755970Abstract: In one exemplary aspect, a method for semiconductor manufacturing comprises forming first and second silicon nitride features on sidewall surfaces of a contact hole, where the contact hole is disposed in a dielectric layer and above a source/drain (S/D) feature. The method further comprises forming a contact plug in the contact hole, the contact plug being electrically coupled to the S/D feature, removing a top portion of the contact plug to create a recess in the contact hole, forming a hard mask layer in the recess, and removing the first and second silicon nitride features via selective etching to form first and second air gaps, respectively.Type: GrantFiled: June 15, 2018Date of Patent: August 25, 2020Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Hsin-Che Chiang, Ju-Li Huang, Chun-Sheng Liang, Jeng-Ya David Yeh
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Patent number: 10446567Abstract: To provide a nonvolatile storage element capable of being formed by an ordinary CMOS process using single layer polysilicon without requiring exclusive forming process and a reference voltage generation circuit with high versatility and high precision. A reference voltage generation circuit includes nonvolatile storage elements formed of single layer polysilicon. The nonvolatile storage elements each include a MOS transistor including a floating gate, a MOS transistor including a floating gate, and a MOS transistor including a floating gate.Type: GrantFiled: March 19, 2018Date of Patent: October 15, 2019Assignee: Asahi Kasei Microdevices CorporationInventors: Toshiro Sakamoto, Satoshi Takehara
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Patent number: 10411018Abstract: Various embodiments provide semiconductor structures and their fabrication methods. An SRAM memory cell can include at least one semiconductor structure, and an SRAM memory can include at least one SRAM memory cell. An exemplary semiconductor structure can include at least two adjacent transistors formed on a semiconductor substrate. An opening can be formed and surrounded by gates of the two adjacent transistors and a doped region formed between the gates of the two adjacent transistors. A conductive layer can be formed to at least partially cover a bottom and a sidewall of the opening to electrically connect a gate of one transistor with the doped region of the other transistor of the two adjacent transistors.Type: GrantFiled: May 12, 2016Date of Patent: September 10, 2019Assignee: Semiconductor Manufacturing International Corp.Inventors: Tzu-Yin Chiu, Juilin Lu, Jianxiang Cai
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Patent number: 10312245Abstract: Embodiments are directed to a method of forming a semiconductor device and resulting structures having a shared SRAM trench and a common contact having a low contact resistance. The method includes forming a first semiconductor fin opposite a surface of a substrate and forming a second semiconductor fin opposite the surface of the substrate and adjacent to the first semiconductor fin. A doped region is formed over portions of each of the first and second semiconductor fins and a dielectric layer is formed over the doped regions. A shared trench is formed in the dielectric layer exposing portions of the doped regions. The exposed doped regions are then amorphized and recrystallized.Type: GrantFiled: August 30, 2018Date of Patent: June 4, 2019Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Zuoguang Liu, Gen Tsutsui, Heng Wu, Peng Xu
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Patent number: 10254037Abstract: A fan assembly for a refrigeration appliance includes a fan for circulating air within a compartment of the refrigeration appliance. The fan includes a frame. A housing is provided for mounting the fan. The housing includes a plate with an opening extending through the plate. A plurality of walls extends from a surface of the plate. A first retaining member extends in a direction generally parallel to a surface of the plate and is disposed proximate the opening for hindering movement of the fan in a direction generally perpendicular to a surface of the plate. The plurality of walls and the first retaining member define a pocket for receiving the frame. A vibration damping member is provided for allowing the fan to vibrate relative to the housing and for hindering the transmission of vibrations from the fan to the housing.Type: GrantFiled: March 21, 2017Date of Patent: April 9, 2019Assignee: Electrolux Home Products, Inc.Inventors: Marcelo C. Candeo, Shawn Boiter, Justin Elgin
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Patent number: 9941191Abstract: A first photoresist layer is patterned with a first pattern that includes an opening in a region between areas of two adjacent via holes to be formed. The opening in the first photoresist is transferred into a template layer to form a line trench therein. The lateral dimension of the trench is reduced by depositing a contiguous spacer layer that does not fill the trench completely. An etch-resistant material layer is conformally deposited and fills the trench, and is subsequently recessed to form an etch-resistant material portion filling the trench. A second photoresist layer is applied and patterned with a second pattern, which includes an opening that includes areas of two via holes and an area therebetween. A composite pattern of an intersection of the second pattern and the complement of the pattern of the etch-resistant material portion is transferred through the template layer.Type: GrantFiled: October 15, 2015Date of Patent: April 10, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Chiahsun Tseng, Jin Liu, Lei Zhuang
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Patent number: 9882125Abstract: Memory cells and methods of forming memory cells are disclosed. The memory cell includes a substrate and a select transistor. The select transistor includes a gate disposed over the substrate between first and second source/drain (S/D) terminals. The first and second S/D terminals are configured such that a resistance at the second S/D terminal is higher than a resistance at the first S/D terminal. A dielectric layer disposed over the substrate includes a plurality of inter level dielectric (ILD) layers. A lower portion of the dielectric layer includes a first contact level and a first metal level. A first contact plug disposed within the first contact level connects the first S/D terminal to a first metal line in the first metal level. A magnetic tunnel junction (MTJ) element is disposed directly on and in contact with a top of the first metal line.Type: GrantFiled: February 10, 2016Date of Patent: January 30, 2018Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Eng Huat Toh, Kiok Boone Elgin Quek
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Patent number: 9793399Abstract: A semiconductor device includes a stressor and an insulating pattern. A device isolation layer is formed to define an active area on a substrate. A first gate electrode is formed on the active area. A second gate electrode is formed on the device isolation layer. A trench is formed in the active area between the first gate electrode and the second gate electrode. A stressor is formed in the trench. A cavity formed between the stressor and the device isolation layer and adjacent to the second gate electrode is disposed. An insulating pattern is formed in the cavity.Type: GrantFiled: December 17, 2014Date of Patent: October 17, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Pan-Kwi Park, Koung-Min Ryu, Moon-Han Park, Hyung-suk Jung, Jong-hoon Baek, Su-Young Choi
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Patent number: 9711649Abstract: Metal quantum dots are incorporated into doped source and drain regions of a MOSFET array to assist in controlling transistor performance by altering the energy gap of the semiconductor crystal. In a first example, the quantum dots are incorporated into ion-doped source and drain regions. In a second example, the quantum dots are incorporated into epitaxially doped source and drain regions.Type: GrantFiled: December 29, 2015Date of Patent: July 18, 2017Assignee: STMicroelectronics, Inc.Inventor: John H. Zhang
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Patent number: 9634113Abstract: A method of making a semiconductor device includes forming a source/drain region on a substrate; disposing a gate stack on the substrate and adjacent to the source/drain region, the gate stack including a gate spacer along a sidewall of the gate stack; disposing an inter-level dielectric (ILD) layer on the source/drain region and the gate stack; removing a portion of the ILD layer on the source/drain region to form a source/drain contact pattern; filling the source/drain contact pattern with a layer of silicon material, the layer of silicon material being in contact with the source/drain region and in contact with the gate spacer; depositing a metallic layer over the first layer of silicon material; and performing a silicidation process to form a source/drain contact including a silicide.Type: GrantFiled: December 14, 2015Date of Patent: April 25, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Joshua M. Rubin, Tenko Yamashita
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Patent number: 9607989Abstract: Methods for forming a trench silicide without gouging the silicon source/drain regions and the resulting devices are disclosed. Embodiments include forming first and second dummy gates, each with spacers at opposite sides thereof, on a substrate; forming eSiGe source/drain regions at opposite sides of the first dummy gate; forming raised source/drain regions at opposite sides of the second dummy gate; forming a silicon cap on each of the eSiGe and raised source/drain regions; forming an ILD over and between the first and second dummy gates; replacing the first and second dummy gates with first and second HKMG, respectively; forming a contact trench through the ILD into the silicon cap over each of the eSiGe and raised source/drain regions; and forming a silicide over the eSiGe and raised source/drain regions.Type: GrantFiled: December 4, 2014Date of Patent: March 28, 2017Assignee: GLOBALFOUNDRIES INC.Inventors: Xusheng Wu, Yue Hu, Xin Wang, Yong Meng Lee, Wen-Pin Peng, Lun Zhao, Wei-Hua Tong
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Patent number: 9153586Abstract: A semiconductor device includes a substrate including a first region and a second region, a gate dielectric layer formed on the substrate, and a metal electrode layer formed on the gate dielectric layer and including a compound of carbon and nitrogen, wherein a metal electrode formed from the metal electrode layer in the first region has a work function lower than a work function of a metal electrode formed from the metal electrode layer in the second region and a nitrogen concentration of the metal electrode of the first region is smaller than a nitrogen concentration of the metal electrode of the second region.Type: GrantFiled: October 15, 2014Date of Patent: October 6, 2015Assignee: SK Hynix Inc.Inventors: Yun-Hyuck Ji, Woo-Young Park
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Patent number: 9117692Abstract: A semiconductor device is manufactured using dual metal silicide layers. The semiconductor device includes a substrate having first and second regions, a first metal gate electrode on the substrate in the first region, a second metal gate electrode on the substrate in the second region, a first epitaxial layer on and in the substrate at both sides of the first metal gate electrode, a second epitaxial layer on and in the substrate at both sides of the second metal gate electrode, a first metal silicide layer on the first epitaxial layer, a second metal silicide layer on the second epitaxial layer, an interlayer dielectric layer on the first and second metal silicide layers, contact plugs passing through the interlayer dielectric layer and electrically connected to the first and second metal silicide layers.Type: GrantFiled: October 14, 2014Date of Patent: August 25, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sangjine Park, Boun Yoon, Jeongnam Han, Kee-Sang Kwon, Byung-Kwon Cho, Wonsang Choi
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Patent number: 9018714Abstract: A structure has at least one field effect transistor having a gate stack disposed between raised source drain structures that are adjacent to the gate stack. The gate stack and raised source drain structures are disposed on a surface of a semiconductor material. The structure further includes a layer of field dielectric overlying the gate stack and raised source drain structures and first contact metal and second contact metal extending through the layer of field dielectric. The first contact metal terminates in a first trench formed through a top surface of a first raised source drain structure, and the second contact metal terminates in a second trench formed through a top surface of a second raised source drain structure. Each trench has silicide formed on sidewalls and a bottom surface of at least a portion of the trench. Methods to fabricate the structure are also disclosed.Type: GrantFiled: July 28, 2014Date of Patent: April 28, 2015Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Bruce B. Doris, Ali Khakifirooz, Pranita Kerber, Christian Lavoie
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Publication number: 20150076615Abstract: A semiconductor device includes a first fin rising out of a semiconductor base. It further includes a second fin rising out of the semiconductor base. The second fin is substantially parallel to the first fin that forms a span between the first fin and the second fin. A first dielectric layer is deposited on exposed surfaces of a first gate body area of the first fin, a second gate body area of the second fin, and an adjacent surface of the semiconductor base that defines the span between the first and second gate body areas. A gate electrode layer is sandwiched between the first dielectric layer and a second dielectric layer. The semiconductor device includes a third fin interdigitated between the first fin and the second fin within the span. Exposed surfaces of the gate body area of the third fin are in contact with the second dielectric layer.Type: ApplicationFiled: September 19, 2013Publication date: March 19, 2015Applicant: International Business Machines CorporationInventors: Karl R. Erickson, Phil C. Paone, David P. Paulsen, John E. Sheets, II, Gregory J. Uhlmann, Kelly L. Williams
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Patent number: 8981484Abstract: An integrated circuit (IC) including a well region of the IC having a first doping level and a plurality of semiconductor regions implanted in the well region. Each of the plurality of semiconductor regions has a second doping level. The second doping level is greater than the first doping level. A plurality of polysilicon regions are arranged on the plurality of semiconductor regions. The polysilicon regions are respectively connected to the semiconductor regions. The plurality of semiconductor regions is a drain of a metal-oxide semiconductor field-effect transistor (MOSFET).Type: GrantFiled: May 9, 2012Date of Patent: March 17, 2015Assignee: Marvell World Trade Ltd.Inventors: Sehat Sutardja, Ravishanker Krishnamoorthy, Siew Yong Chui
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Publication number: 20150061034Abstract: A method of fabricating Schottky barrier contacts for an integrated circuit (IC). A substrate including a silicon including surface is provided having a plurality of transistors formed thereon, where the plurality of transistors include at least one exposed p-type surface region and at least one exposed n-type surface region on the silicon including surface. A plurality of metals are deposited including Yb and Pt to form at least one metal layer on the substrate. The metal layer is heated to induce formation of an inhomogeneous silicide layer including both Ptsilicide and Ybsilicide on the exposed p-type and n-type surface regions.Type: ApplicationFiled: August 28, 2014Publication date: March 5, 2015Inventors: DEBORAH JEAN RILEY, JUDY BROWDER SHAW, CHRISTOPHER L. HINKLE, CREIGHTON T. BUIE
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Patent number: 8928090Abstract: A metallic top surface of a replacement gate structure is oxidized to convert a top portion of the replacement gate structure into a dielectric oxide. After removal of a planarization dielectric layer, selective epitaxy is performed to form a raised source region and a raised drain region that extends higher than the topmost surface of the replacement gate structure. A gate level dielectric layer including a first dielectric material is deposited and subsequently planarized employing the raised source and drain regions as stopping structures. A contact level dielectric layer including a second dielectric material is formed over the gate level dielectric layer, and contact via holes are formed employing an etch chemistry that etches the second dielectric material selective to the first dielectric material. Raised source and drain regions are recessed. Self-aligned contact structures can be formed by filling the contact via holes with a conductive material.Type: GrantFiled: October 31, 2012Date of Patent: January 6, 2015Assignee: International Business Machines CorporationInventors: Soon-Cheon Seo, Balasubramanian S. Haran, Alexander Reznicek
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Patent number: 8907427Abstract: A semiconductor device may include a substrate, source and drain regions in the substrate, a recessed epitaxial channel layer in the substrate between the source and drain regions, and a high-K gate dielectric layer overlying the recessed epitaxial channel layer. The semiconductor device may further include a gate electrode overlying the high-K gate dielectric layer, a dielectric cap layer in contact with top and sidewall portions of the gate electrode, the dielectric cap layer having a lower dielectric constant than the high-K gate dielectric layer, and source and drain contacts coupled to the source and drain regions.Type: GrantFiled: November 5, 2012Date of Patent: December 9, 2014Assignee: STMicroelectronics, Inc.Inventor: John H Zhang
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Patent number: 8900922Abstract: A method includes laminating a Non-Conductive Film (NCF) over a first package component, and bonding a second package component on the first package component. The NCF and the second package component are on a same side of the first package component. Pillars of a mold tool are then forced into the NCF to form openings in the NCF. The connectors of the first package component are exposed through the openings.Type: GrantFiled: February 16, 2012Date of Patent: December 2, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Cheng-Chung Lin, Kuei-Wei Huang, Ai-Tee Ang, Tsai-Tsung Tsai, Ming-Da Cheng, Chung-Shi Liu
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Patent number: 8889554Abstract: The present invention provides a method for manufacturing a semiconductor structure, comprising: forming a first contact layer on an exposed active region of a first spacer; forming a second spacer at a region of the first contact layer close to a gate stack to partially cover the exposed active region; forming a second contact layer in the uncovered exposed active region, wherein when a diffusion coefficient of the first contact layer is the same as that of the second contact layer, the first contact layer has a thickness less than that of the second contact layer; and when the diffusion coefficient of the first contact layer is different from that of the second contact layer, the diffusion coefficient of the first contact layer is smaller than that of the second contact layer. Correspondingly, the present invention also provides a semiconductor structure.Type: GrantFiled: April 18, 2011Date of Patent: November 18, 2014Assignee: The Institue of Microelectronics Chinese Academy of ScienceInventors: Haizhou Yin, Wei Jiang, Zhijiong Luo, Huilong Zhu
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Patent number: 8878275Abstract: In one general aspect, an apparatus can include a channel region disposed in a semiconductor substrate, a gate dielectric disposed on the channel region and a drift region disposed in the semiconductor substrate adjacent to the channel region. The apparatus can further include a field plate having an end portion disposed between a top surface of the semiconductor substrate and the gate dielectric The end portion can include a surface in contact with the gate dielectric, the surface having a first portion aligned along a first plane non-parallel to a second plane along which a second portion of the surface is aligned, the first plane being non-parallel to the top surface of the semiconductor substrate and the second plane being non-parallel to the top surface of the semiconductor substrate.Type: GrantFiled: February 18, 2013Date of Patent: November 4, 2014Assignee: Fairchild Semiconductor CorporationInventors: Sunglyong Kim, Mark Schmidt, Christopher Nassar, Steven Leibiger
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Patent number: 8878311Abstract: A structure has at least one field effect transistor having a gate stack disposed between raised source drain structures that are adjacent to the gate stack. The gate stack and raised source drain structures are disposed on a surface of a semiconductor material. The structure further includes a layer of field dielectric overlying the gate stack and raised source drain structures and first contact metal and second contact metal extending through the layer of field dielectric. The first contact metal terminates in a first trench formed through a top surface of a first raised source drain structure, and the second contact metal terminates in a second trench formed through a top surface of a second raised source drain structure. Each trench has silicide formed on sidewalls and a bottom surface of at least a portion of the trench. Methods to fabricate the structure are also disclosed.Type: GrantFiled: March 28, 2013Date of Patent: November 4, 2014Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Bruce B. Doris, Ali Khakifirooz, Pranita Kerber, Christian Lavoie
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Patent number: 8865556Abstract: Techniques for forming a smooth silicide without the use of a cap layer are provided. In one aspect, a FET device is provided. The FET device includes a SOI wafer having a SOI layer over a BOX and at least one active area formed in the wafer; a gate stack over a portion of the at least one active area which serves as a channel of the device; source and drain regions of the device adjacent to the gate stack, wherein the source and drain regions of the device include a semiconductor material selected from: silicon and silicon germanium; and silicide contacts to the source and drain regions of the device, wherein an interface is present between the silicide contacts and the semiconductor material, and wherein the interface has an interface roughness of less than about 5 nanometers.Type: GrantFiled: September 12, 2012Date of Patent: October 21, 2014Assignee: International Business Machines CorporationInventors: Joseph S. Newbury, Kenneth Parker Rodbell, Zhen Zhang, Yu Zhu
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Patent number: 8865582Abstract: Disclosed are methods for manufacturing floating gate memory devices and the floating gate memory devices thus manufactured. In one embodiment, the method comprises providing a monocrystalline semiconductor substrate, forming a tunnel oxide layer on the substrate, and depositing a protective layer on the tunnel oxide layer to form a stack of the tunnel oxide layer and the protective layer. The method further includes forming at least one opening in the stack, thereby exposing at least one portion of the substrate, and cleaning the at least one exposed portion with a cleaning liquid. The method still further includes loading the substrate comprising the stack into a reactor and, thereafter, performing an in-situ etch to remove the protective layer, using the at least one exposed portion as a source to epitaxially grow a layer comprising the monocrystalline semiconductor material, and forming the layer into at least one columnar floating gate structure.Type: GrantFiled: October 25, 2011Date of Patent: October 21, 2014Assignee: IMECInventors: Roger Loo, Matty Caymax, Pieter Blomme, Geert Van den Bosch
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Publication number: 20140246729Abstract: A semiconductor device including a substrate including an NMOS region and a PMOS region; first and second gate dielectrics on the NMOS and PMOS regions of the substrate and including a high-k dielectric material; a first gate structure on the first gate dielectric and including a sequentially stacked first n-type metal layer pattern and first electrode layer pattern; a second gate structure on the second gate dielectric and including a sequentially stacked p-type metal layer pattern, second n-type metal layer pattern, and second electrode layer pattern; first and second spacers on sidewalls of the first and second gate structures; a first offset pattern between the first gate structure and the first spacer; and a second offset pattern between the second gate structure and the second spacer, the second offset pattern being on the sidewalls of the second gate structure excluding sidewalls of the p-type metal layer pattern.Type: ApplicationFiled: February 18, 2014Publication date: September 4, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Ho JANG, Tae-Ho LEE, Jung-Bun LEE
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Patent number: 8803243Abstract: A complementary metal oxide semiconductor (CMOS) device including a substrate including a first active region and a second active region, wherein each of the first active region and second active region of the substrate are separated by from one another by an isolation region. A n-type semiconductor device is present on the first active region of the substrate, in which the n-type semiconductor device includes a first portion of a gate structure. A p-type semiconductor device is present on the second active region of the substrate, in which the p-type semiconductor device includes a second portion of the gate structure. A connecting gate portion provides electrical connectivity between the first portion of the gate structure and the second portion of the gate structure. Electrical contact to the connecting gate portion is over the isolation region, and is not over the first active region and/or the second active region.Type: GrantFiled: January 3, 2012Date of Patent: August 12, 2014Assignee: International Business Machines CorporationInventors: Yue Liang, Dureseti Chidambarrao, Brian J. Greene, William K. Henson, Unoh Kwon, Shreesh Narasimha, Xiaojun Yu
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Patent number: 8766236Abstract: A semiconductor device according to an embodiment includes: a substrate; a first semiconductor layer formed on the substrate and having a strain; a second and a third semiconductor layers formed at a distance from each other on the first semiconductor layer, and having a different lattice constant from a lattice constant of the first semiconductor layer; a gate insulating film formed on a first portion of the first semiconductor layer, the first portion being located between the second semiconductor layer and the third semiconductor layer; and a gate electrode formed on the gate insulating film.Type: GrantFiled: September 19, 2011Date of Patent: July 1, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Koji Usuda, Tsutomu Tezuka
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Patent number: 8766319Abstract: A manufacturing method of a semiconductor device comprises the following steps. First, a substrate is provided, at least one fin structure is formed on the substrate, and a metal layer is then deposited on the fin structure to form a salicide layer. After depositing the metal layer, the metal layer is removed but no RTP is performed before the metal layer is removed. Then a RTP is performed after the metal layer is removed.Type: GrantFiled: April 26, 2012Date of Patent: July 1, 2014Assignee: United Microelectronics Corp.Inventors: Kuo-Chih Lai, Chia Chang Hsu, Nien-Ting Ho, Bor-Shyang Liao, Shu Min Huang, Min-Chung Cheng, Yu-Ru Yang
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Patent number: 8754483Abstract: Embodiments of the present invention provide a structure. The structure includes a plurality of field-effect-transistors having gate stacks formed on top of a semiconductor substrate, the gate stacks having spacers formed at sidewalls thereof; and one or more conductive contacts formed directly on top of the semiconductor substrate and interconnecting at least one source/drain of one of the plurality of field-effect-transistors to at least one source/drain of another one of the plurality of field-effect-transistors, wherein the one or more conductive contacts is part of a low-profile local interconnect that has a height lower than a height of the gate stacks.Type: GrantFiled: June 27, 2011Date of Patent: June 17, 2014Assignee: International Business Machines CorporationInventors: Shom Ponoth, David V. Horak, Charles W. Koburger, III, Chih-Chao Yang
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Publication number: 20140151816Abstract: One device includes first and second spaced-apart active regions formed in a semiconducting substrate, a layer of gate insulation material positioned on the first active region, and a conductive line feature that has a first portion positioned above the gate insulation material and a second portion that conductively contacts the second active region. One method includes forming first and second spaced-apart active regions in a semiconducting substrate, forming a layer of gate insulation material on the first and second active regions, performing an etching process to remove a portion of the gate insulation material formed on the second active region to expose a portion of the second active region, and forming a conductive line feature that comprises a first portion positioned above the layer of gate insulation material formed on the first active region and a second portion that conductively contacts the exposed portion of the second active region.Type: ApplicationFiled: November 30, 2012Publication date: June 5, 2014Applicant: GLOBALFOUNDRIES INC.Inventors: Frank Jakubowski, Juergen Faul
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Patent number: 8742512Abstract: A semiconductor device according to the invention includes: a first region on a semiconductor substrate, in which a first transistor is formed, the first transistor including first gate insulating film 4 containing a high dielectric constant material and first metal gate electrode 5 formed on first gate insulating film 4; a second region adjacent to the first region on the semiconductor substrate, in which a second transistor is formed, the second transistor including second gate insulating film 4 and second metal gate electrode 12 formed on the second gate insulating film, a layered structure of electrode materials of the second transistor being different from a layered structure of electrode materials of the first transistor; and a first and a second line, the lines being of different potentials, wherein a border between the first and the second region overlaps with at most only the first or the second line.Type: GrantFiled: September 11, 2012Date of Patent: June 3, 2014Inventor: Takeshi Kishida
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Patent number: 8729639Abstract: According to one embodiment, a semiconductor device includes a gate electrode formed on a substrate with a gate insulation film interposed therebetween, and a source region of a first conductivity type and a drain region of a second conductivity type reverse to the first conductivity type, which are formed so as to hold the gate electrode therebetween within the substrate. The work function of a first region on the source region side within the gate electrode is shifted toward the first conductivity type as compared to the work function of a second region on the drain region side within the gate electrode.Type: GrantFiled: February 6, 2013Date of Patent: May 20, 2014Assignee: Kabushiki Kaisha ToshibaInventor: Masakazu Goto
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Patent number: 8723270Abstract: A SRAM includes a first CMOS inverter of first and second MOS transistors connected in series, a second CMOS inverter of third and fourth MOS transistors connected in series and forming a flip-flop circuit together with the first CMOS inverter, and a polysilicon resistance element formed on a device isolation region, each of the first and third MOS transistors is formed in a device region of a first conductivity type and includes a second conductivity type drain region at an outer side of a sidewall insulation film of the gate electrode with a larger depth than a drain extension region thereof, wherein a source region is formed deeper than a drain extension region, the polysilicon gate electrode has a film thickness identical to a film thickness of the polysilicon resistance element, the source region and the polysilicon resistance element are doped with the same dopant element.Type: GrantFiled: June 27, 2013Date of Patent: May 13, 2014Assignee: Fujitsu Semiconductor LimitedInventor: Makoto Yasuda
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Patent number: 8685809Abstract: Self-assembled polymer technology is used to form at least one ordered nanosized pattern within material that is present in a conductive contact region of a semiconductor structure. The material having the ordered, nanosized pattern is a conductive material of an interconnect structure or semiconductor source and drain diffusion regions of a field effect transistor. The presence of the ordered, nanosized pattern material within the contact region increases the overall area (i.e., interface area) for subsequent contact formation which, in turn, reduces the contact resistance of the structure. The reduction in contact resistance in turn improves the flow of current through the structure. In addition to the above, the inventive methods and structures do not affect the junction capacitance of the structure since the junction area remains unchanged.Type: GrantFiled: April 24, 2012Date of Patent: April 1, 2014Assignee: International Business Machines CorporationInventors: Bruce B. Doris, Carl J. Radens, Anthony K. Stamper, Jay W. Strane
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Patent number: 8652896Abstract: A SRAM includes a first CMOS inverter of first and second MOS transistors connected in series, a second CMOS inverter of third and fourth MOS transistors connected in series and forming a flip-flop circuit together with the first CMOS inverter, and a polysilicon resistance element formed on a device isolation region, each of the first and third MOS transistors is formed in a device region of a first conductivity type and includes a second conductivity type drain region at an outer side of a sidewall insulation film of the gate electrode with a larger depth than a drain extension region thereof, wherein a source region is formed deeper than a drain extension region, the polysilicon gate electrode has a film thickness identical to a film thickness of the polysilicon resistance element, the source region and the polysilicon resistance element are doped with the same dopant element.Type: GrantFiled: December 26, 2012Date of Patent: February 18, 2014Assignee: Fujitsu Semiconductor LimitedInventor: Makoto Yasuda
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Patent number: 8648472Abstract: In a method for fabricating a semiconductor device, first, a first metal interconnect is formed in an interconnect formation region, and a second metal interconnect is formed in a seal ring region. Subsequently, by chemical mechanical polishing or etching, the upper portions of the first metal interconnect and the second metal interconnect are recessed to form recesses. A second insulating film filling the recesses is then formed above a substrate, and the upper portion of the second insulating film is planarized. Next, a hole and a trench are formed to extend halfway through the second insulating film, and ashing and polymer removal are performed. Subsequently to this, the hole and the trench are allowed to reach the first metal interconnect and the second metal interconnect.Type: GrantFiled: November 12, 2012Date of Patent: February 11, 2014Assignee: Panasonic CorporationInventor: Shusuke Isono
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Patent number: 8629508Abstract: A system and method for forming an isolation trench is provided. An embodiment comprises forming a trench and then lining the trench with a dielectric liner. Prior to etching the dielectric liner, an outgassing process is utilized to remove any residual precursor material that may be left over from the deposition of the dielectric liner. After the outgassing process, the dielectric liner may be etched, and the trench may be filled with a dielectric material.Type: GrantFiled: December 11, 2012Date of Patent: January 14, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chih-Tang Peng, Bing-Hung Chen, Tze-Liang Lee, Hao-Ming Lien
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Patent number: 8569837Abstract: A semiconductor structure includes a semiconductor substrate; a gate dielectric over the semiconductor substrate; a gate electrode over the gate dielectric; a deep source/drain region adjacent the gate electrode; a silicide region over the deep source/drain region; and an elevated metallized source/drain region between the silicide region and the gate electrode. The elevated metallized source/drain region adjoins the silicide region.Type: GrantFiled: May 7, 2007Date of Patent: October 29, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chih-Hsin Ko, Hung-Wei Chen, Chung-Hu Ke, Ta-Ming Kuan, Wen-Chin Lee
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Patent number: 8569838Abstract: A method of fabricating gate level electrodes and interconnects in an integrated circuit, and an integrated circuit so fabricated, with improved process margin for the gate level interconnects of a width near the critical dimension. Off-axis illumination, as used in the photolithography of deep sub-micron critical dimension, is facilitated by the patterned features having a preferred orientation in a common direction, with a pitch constrained to within a relatively narrow range. Interconnects in that same gate level, for example “field poly” interconnects, that run parallel to an array of gate elements are placed within a specified distance range from the ends of the gate elements, or at a distance sufficient to allow sub-resolution assist features.Type: GrantFiled: March 16, 2011Date of Patent: October 29, 2013Assignee: Texas Instruments IncorporatedInventors: James Walter Blatchford, Jr., Yong Seok Choi
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Patent number: 8569803Abstract: This invention provides structures and a fabrication process for incorporating thin film transistors in back end of the line (BEOL) interconnect structures. The structures and fabrication processes described are compatible with processing requirements for the BEOL interconnect structures. The structures and fabrication processes utilize existing processing steps and materials already incorporated in interconnect wiring levels in order to reduce added cost associated with incorporating thin film transistors in the these levels. The structures enable vertical (3D) integration of multiple levels with improved manufacturability and reliability as compared to prior art methods of 3D integration.Type: GrantFiled: August 13, 2012Date of Patent: October 29, 2013Assignee: International Business Machines CorporationInventors: Christy S. Tyberg, Katherine L. Saenger, Jack O. Chu, Harold J. Hovel, Robert L. Wisnieff, Kerry Bernstein, Stephen W. Bedell
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Patent number: 8563385Abstract: A method for fabricating a field effect transistor device includes forming a gate stack on a substrate, forming a spacer on the substrate, adjacent to the gate stack, forming a first portion of an active region on the substrate, the first portion of the active region having a first facet surface adjacent to the gate stack, forming a second portion of the active region on a portion of the first portion of the active region, the second portion of the active region having a second facet surface adjacent to the gate stack, the first facet surface and the second facet surface partially defining a cavity adjacent to the gate stack.Type: GrantFiled: September 7, 2012Date of Patent: October 22, 2013Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Bruce B. Doris, Ali Khakifirooz, Alexander Reznicek