Having Contacts Formed By Selective Growth Or Deposition Patents (Class 438/399)
  • Publication number: 20070184627
    Abstract: Semiconductor devices including a gate electrode crossing over a semiconductor fin on a semiconductor substrate are provided. A gate insulating layer is provided between the gate electrode and the semiconductor fin. A channel region having a three-dimensional structure defined at the semiconductor fin under the gate electrode is also provided. Doped region is provided in the semiconductor fin at either side of the gate electrode and an interlayer insulating layer is provided on a surface of the semiconductor substrate. A connector region is coupled to the doped region and provided in an opening, which penetrates the interlayer insulating layer. A recess region is provided in the doped region and is coupled to the connector region. The connector region contacts an inner surface of the recess region. Related methods of fabricating semiconductor devices are also provided herein.
    Type: Application
    Filed: January 29, 2007
    Publication date: August 9, 2007
    Inventors: Eun-Suk Cho, Chul Lee
  • Patent number: 7253052
    Abstract: Described are integrated circuit electrodes and method for fabricating an electrode, which include, in an embodiment forming a silicon, first portion of the electrode in a lower region of a substrate opening. The method may further include forming a second portion of the electrode in the opening and overlying the first portion, the insulative layer encompassing a sidewall of the second portion. The method may further include forming a third portion of the electrode overlying the second portion and overlying at least a portion of the insulative layer, wherein the first portion and the second portion are different materials. In an embodiment, the second portion is a diffusion barrier layer and the third portion is an oxidation resistant layer. In an embodiment, the method includes encompassing a lower sidewall of the third portion with the insulative layer.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 7, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Pierre C. Fazan, Viju K. Mathews
  • Publication number: 20070170488
    Abstract: A capacitor of a semiconductor device and a method for fabricating the same may be provided. The method may include forming an interlayer insulation layer, an etch stop layer, and/or a sacrificial insulation layer on a semiconductor substrate, patterning the interlayer insulation layer, the etch stop layer, and/or the sacrificial insulation layer to form a contact hole exposing a desired or predetermined region of the semiconductor substrate, filling the contact hole to form a contact plug, removing the sacrificial insulation layer to expose an upper portion of the contact plug, and/or forming a dielectric layer and/or a top electrode on the exposed upper portion of the contact plug.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 26, 2007
    Inventors: Mi-Young Ryu, Hee-Il Chae
  • Patent number: 7232736
    Abstract: Semiconductor devices with copper interconnections and MIM capacitors and methods of fabricating the same are provided. The device includes a lower electrode composed of a first copper layer. A first insulation layer covers a lower electrode. A window is formed in the first insulation layer to expose a portion of the lower electrode. A capacitor includes a lower barrier electrode, a dielectric layer, and an upper barrier electrode, which are sequentially formed to cover a sidewall and a bottom of the window. An intermediate electrode composed of a second copper layer fills a remaining space of an inside of the capacitor. A second insulation layer is formed on the intermediate electrode. A connection hole is formed in the second insulation layer to expose a portion of the intermediate electrode. A connection contact plug composed of a third copper layer fills the connection hole.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: June 19, 2007
    Assignee: Samsung Electronics, Co., Ltd.
    Inventor: Ki-Young Lee
  • Patent number: 7229904
    Abstract: Disclosed is a method for forming landing plug contacts in a semiconductor device. The method includes the steps of: forming a plurality of gate structures on a substrate, each gate structure including a gate hard mask; forming an inter-layer insulation layer on the gate structures; planarizing the inter-layer insulation layer through a chemical mechanical polishing (CMP) process until the gate hard mask is exposed; forming a hard mask material on the planarized inter-layer insulation layer; patterning the hard mask material, thereby forming a hard mask; forming a plurality of contact holes exposing the substrate disposed between the gate structures by etching the planarized inter-layer insulation layer with use of the hard mask as an etch mask; forming a polysilicon layer on the contact holes; and forming the landing plug contacts buried into the contact holes through a planarization process performed to the polysilicon layer until the gate hard mask is exposed.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: June 12, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hyung-Hwan Kim
  • Patent number: 7223654
    Abstract: A damascene MIM capacitor and a method of fabricating the MIM capacitor. The MIN capacitor includes a dielectric layer having top and bottom surfaces; a trench in the dielectric layer, the trench extending from the top surface to the bottom surface of the dielectric layer; a first plate of a MIM capacitor comprising a conformal conductive liner formed on all sidewalls and extending along a bottom of the trench, the bottom of the trench coplanar with the bottom surface of the dielectric layer; an insulating layer formed over a top surface of the conformal conductive liner; and a second plate of the MIM capacitor comprising a core conductor in direct physical contact with the insulating layer, the core conductor filling spaces in the trench not filled by the conformal conductive liner and the insulating layer. The method includes forming portions of the MIM capacitor simultaneously with damascene interconnection wires.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: May 29, 2007
    Assignee: International Business Machines Corporation
    Inventors: Chih-Chao Yang, Lawrence A. Clevenger, Timothy J. Dalton, Louis C. Hsu
  • Patent number: 7221591
    Abstract: A memory transistor having a pair of separate floating gates overlying end regions of a channel and a control gate that overlies the floating gates and a central region of the channel effectively operates as a pair of floating gate transistors with an intervening select transistor. Each floating gate can be charged to store a distinct binary, analog, or multi-bit value. An erase operation can use a negative voltage on the control and a positive voltage on an underlying well or source/drain region to cause tunneling that discharges one or both floating gates. Applying a limited current to a source/drain region during an erase operation can cause the source/drain region and a floating gate to rise together and avoid band-to-band tunneling and resulting hole injection into the floating gate.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: May 22, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sau Ching Wong
  • Patent number: 7214584
    Abstract: Disclosed is a method for preventing a bunker defect generation on a lower portion of a cylinder type metal bottom electrode. The method includes the steps of: forming an etch stop layer on a bottom structure with a conductive region and an insulation region; forming a capacitor insulation layer on the etch stop layer; forming an opening exposing the conductive region by selectively etching the capacitor insulation layer and the etch stop layer; growing a selective epitaxial growth (SEG) layer in the conductive region exposed through the opening; forming a metal layer for a capacitor bottom electrode along a profile provided with the opening; forming an isolated capacitor bottom electrode by removing the metal layer until the capacitor insulation layer is exposed; and removing the capacitor insulation layer, thereby making the capacitor bottom electrode have a cylinder type structure.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: May 8, 2007
    Assignee: Hynix Semiconductor, Inc.
    Inventor: Seung-Ho Pyi
  • Patent number: 7199051
    Abstract: Disclosed is a method for fabricating a semiconductor device with protected conductive structures. The method includes the steps of: forming a plurality of conductive structures on a substrate, each conductive structure including a conductive layer and a hard mask insulation layer formed on the conductive layer; forming a first insulation layer on the conductive structures; forming a plurality of plugs contacted to the substrate disposed between the conductive structures by passing through the first insulation layer and having a predetermined height corresponding to a height between the conductive layer and a top of the hard mask insulation layer; forming an attack barrier layer covering top and sidewalls of the hard mask insulation layer; forming a second insulation layer on the attack barrier layer; and selectively etching the second insulation layer to form a contact hole exposing at least one of the plugs.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: April 3, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sung-Kwon Lee, Min-Suk Lee
  • Patent number: 7195975
    Abstract: A method of forming a bit line contact via. The method includes providing a substrate having a transistor with a gate electrode, drain region, and source region, forming a conductive layer overlying the drain region, conformally forming an insulating barrier layer overlying the substrate, blanketly forming a dielectric layer overlying the insulating barrier layer, and forming a via through the dielectric layer and insulating barrier layer, exposing the conductive layer.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: March 27, 2007
    Assignee: Nanya Technology Corporation
    Inventors: Tzu-Ching Tsai, Yi-Nan Chen, Hui-Min Mao
  • Patent number: 7176038
    Abstract: In a ferroelectric element, the ferroelectric film is prevented from deteriorating and the interconnect film from lowering in reliability. A ferroelectric element includes a first electrode, a ferroelectric film formed on the first electrode, a second electrode formed on the ferroelectric film, a first hydrogen blocking film formed directly on a surface of the second electrode, a first insulation film formed on the first hydrogen blocking film, a first opening formed in the first hydrogen blocking film exposing a part of the second electrode, a second opening formed in the first insulation film and having a greater diameter than the diameter of the first opening, and an interconnect film connected to the second electrode through the first and second openings.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: February 13, 2007
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Toshiro Mitsuhashi
  • Patent number: 7144798
    Abstract: An integrated circuit device having a semiconductor substrate includes a gate structure on the semiconductor substrate. Source/drain regions are on opposite sides of the gate structure. A contact pad is on at least one of the source/drain region, and a silicide cap is on a surface of the contact pad opposite the respective source/drain region.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: December 5, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Myeong Jang, Yong-chul Oh, Gyo-young Jin
  • Patent number: 7132346
    Abstract: The present invention relates to a method for fabricating a capacitor employing ALD-TiN as an upper electrode and being suitable for preventing a deterioration of a leakage current property which uses an ALD-TiN as an upper electrode. The method for fabricating the capacitor includes: forming a lower electrode on a semiconductor substrate; forming a dielectric layer on the lower electrode; loading the semiconductor substrate containing the dielectric layer into a deposition chamber; nitriding a surface of the dielectric layer while NH3 gas is flowed into the deposition chamber; and forming an upper layer by using a source gas NH3, containing Titanium (Ti) on the nitrated surface of the dielectric layer through an atomic layer deposition (ALD) method.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: November 7, 2006
    Assignee: Hynix Semiconductor Inc.
    Inventor: Yong-Soo Kim
  • Patent number: 7112508
    Abstract: Method and structure use support layers to assist in planarization processes to form conductive materials (e.g., a Group VIII metal) in an opening. Further, such method and structure may use a Group VIII metal as an etch stop or end point for the planarization process with subsequent etching to remove undesired portions of the Group VIII metal. One exemplary method of providing a conductive material in an opening includes providing a substrate assembly having at least one surface and providing an opening defined through the surface of the substrate assembly. The opening is defined by at least one surface. At least one conductive material (e.g., at least one Group VIII metal such platinum and/or rhodium) is formed within the opening on the at least one surface defining the opening and on at least a portion of the substrate assembly surface. A support film (e.g., an oxide material) is formed over the conductive material and a fill material (e.g.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: September 26, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Howard E. Rhodes, Richard H. Lane
  • Patent number: 7109080
    Abstract: A method of forming a contact for a semiconductor device by forming a storage node contact in a semiconductor substrate having a first pad and a second pad formed thereon. The storage node contact is connected to the second pad. A bit line electrically insulated from the storage node contact by a spacer and electrically connected to the first pad.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: September 19, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Woo Lee, Jong-Chul Park, O-Ik Kwon, Sang-Sup Jeong
  • Patent number: 7105065
    Abstract: A capacitor electrode forming method includes chemisorbing a layer of at least one metal precursor at least one monolayer thick on a substrate, the layer including non-metal components from the precursor. The chemisorbed layer can be treated with an oxidant and the non-metal components removed to form a treated layer of metal. A capacitor electrode can be formed including the treated layer and, optionally, additional treated layers. Preferably, treating the layer does not substantially oxidize the metal and the treated layers exhibit the property of inhibiting oxygen diffusion. The chemisorbing and the treating can be performed at a temperature below about 450° C. or preferably below about 350° C.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: September 12, 2006
    Assignee: Micron Technology, Inc.
    Inventor: Eugene P. Marsh
  • Patent number: 7091102
    Abstract: An integrated circuit device is formed by providing a substrate and forming a capacitor on the substrate. The capacitor includes a lower electrode disposed on the substrate, a dielectric layer on the lower electrode, and an upper electrode on the dielectric. A hydrogen barrier insulation layer is formed on the upper electrode and a hydrogen barrier spacer is formed on a sidewall of the capacitor.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: August 15, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Han-jin Lim, Kwang-hee Lee, Suk-jin Chung, Cha-young Yoo, Wan-don Kim, Jin-il Lee
  • Patent number: 7091084
    Abstract: The present invention discloses a method including providing a substrate; forming a lower conductor over the substrate; forming a conducting nanostructure over the lower conductor; forming a thin dielectric over the conducting nanostructure; and forming an upper conductor over the thin dielectric. The present invention further discloses a device including a substrate; a lower conductor located over the substrate; a conducting nanostructure located over the lower conductor; a thin dielectric located over the conducting nanostructure; and an upper conductor located over the thin dielectric.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: August 15, 2006
    Assignee: Intel Corporation
    Inventors: Scot A. Kellar, Sarah E. Kim
  • Patent number: 7084027
    Abstract: The invention relates to a method for producing an integrated circuit comprising the following steps: preparing a semi-conductor substrate (1) with a contacting circuit area (SS); providing an insulating layer (IS) on the surface of the semi-conductor substrate (1): providing a contact hole (KL) in the insulating layer (IS) for making contacting the circuit area (SS); providing an insulating spacer area (10?) in at least the area above the contact hole (KL); providing at least three trenches (BG1; BG2; BG3), the first (BG1) of which is arranged next to the contact hole (KL), a second (BG2) is disposed across the contact hole (KL) and a third (BG3) is next to the contact hole (KL). The spacer area (10?) is placed between the first and the second trench (BG1; BG2) and the second and the third trench (BG2; BG3); filling the trenches (BG1; BG2; BG3) with a conductive material; and chemical-mechanical polishing of conductive material for producing three separated trenches (BL1; BL2; BL3).
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: August 1, 2006
    Assignee: Infineon Technologies AG
    Inventors: Andreas Hilliger, Ralf Staub, Eike Lüken
  • Patent number: 7081385
    Abstract: Provided herein are vertical nanotube semiconductor devices and methods for making the same. An embodiment of the semiconductor devices comprises a vertical transistor/capacitor cell including a nanotube. The device includes a vertical transistor and a capacitor cell both using a single nanotube to form the individual devices.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: July 25, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Warren M. Farnworth, Kevin G. Duesman
  • Patent number: 7074667
    Abstract: A semiconductor memory device according to embodiments of the invention includes storage nodes and resistors. A method of manufacturing the semiconductor memory device according to some embodiments of the invention includes forming an interlayer insulation layer on a semiconductor substrate including a memory cell array area and a core/perimeter area; forming a first etch stop layer thereon; forming a plurality of contact plugs arranged linearly in at least one direction on the memory cell array area; forming a first conductive layer on the resultant structure; forming a second etch stop layer thereon; etching the second etch stop layer and the first conductive layer and forming landing pads and resistors arranged non-linearly in at least one direction; and forming storage nodes on the entire outer lateral surfaces of which are exposed, on the landing pads.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: July 11, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Hyun Cho, Tae-Young Chung, Yong-Seok Ahn
  • Patent number: 7060552
    Abstract: A semiconductor memory device of the present invention includes: a semiconductor substrate; a memory cell capacitor for storing data, including a first electrode provided above the semiconductor substrate, a capacitance insulating film formed on the first electrode, and a second electrode provided on the capacitance insulating film; a step reducing film covering an upper surface and a side surface of the memory cell capacitor; and an overlying hydrogen barrier film covering the step reducing film.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: June 13, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takumi Mikawa, Toshie Kutsunai, Yuji Judai
  • Patent number: 7033883
    Abstract: A method for placing decoupling capacitors in an integrated circuit during placement and routing stage. In the placement method, a floor plan of the integrated circuit is created, and includes the relative locations of a plurality of functional units. A power mesh comprising a plurality power lines is then overlaid on the floor plan, and the floor plan is divided into a plurality of windows. A plurality of semiconductor cells are placed into a portion of the windows. It is then determined whether a residual area comprising two adjacent windows without functional units and semiconductor cells disposed therein and at least three parallel power lines running theretrough exists. A MOS capacitor is then placed in the detected residual area, serving as a decoupling capacitor.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: April 25, 2006
    Assignee: Faraday Technology Corp.
    Inventors: Chien-Chia Huang, Yu-Wen Tsai
  • Patent number: 7029970
    Abstract: A method for fabricating a semiconductor device capable of preventing an electric short between lower electrodes caused by leaning lower electrodes, or lifted lower electrodes and of securing a sufficient capacitance of a capacitor by increasing an effective capacitor area. The method includes the steps of: preparing a semi-finished semiconductor substrate; forming a sacrificial layer on the semi-finished semiconductor substrate; patterning the sacrificial layer by using an island-type photoresist pattern, thereby obtaining at least one contact hole to expose portions of the semi-finished semiconductor substrate; and forming a conductive layer on the sacrificial layer.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: April 18, 2006
    Assignee: Hynix Semiconductor Inc.
    Inventor: Myung-Kyu Ahn
  • Patent number: 7018903
    Abstract: A method of forming a semiconductor device comprising: sequentially forming a supporting layer and a sacrificial layer over a semiconductor substrate; forming an opening by patterning the sacrificial layer and the supporting layer; forming a bottom electrode covering the inner wall and the bottom of the opening; removing the sacrificial layer by a wet etch process; and forming a dielectric layer and an upper electrode on the bottom electrode and the supporting layer, wherein the sacrificial layer is formed of a material having a faster wet etch rate than the supporting layer.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: March 28, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Ki Kim, Jae-Hee Oh, Kwan-Young Youn
  • Patent number: 7015533
    Abstract: The invention includes a method of forming a semiconductor construction. A semiconductor substrate is provided, and a conductive node is formed to be supported by the semiconductor substrate. A first conductive material is formed over the conductive node and shaped as a container. The container has an opening extending therein and an upper surface proximate the opening. The container opening is at least partially filled with an insulative material. A second conductive material is formed over the at least partially filled container opening and physically against the upper surface of the container. The invention also includes semiconductor structures.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: March 21, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Cem Basceri, Garo J. Derderian
  • Patent number: 7005379
    Abstract: Electroless plating can be utilized to form electrical interconnects associated with semiconductor substrates. For instance, a semiconductor substrate can be formed to have a dummy structure thereover with a surface suitable for electroless plating, and to also have a digit line thereover having about the same height as the dummy structure. A layer can be formed over the dummy structure and digit line, and openings can be formed through the layer to the upper surfaces of the dummy structure and digit line. Subsequently, a conductive material can be electroless plated within the openings to form electrical contacts within the openings. The opening extending to the dummy structure can pass through a capacitor electrode, and accordingly the conductive material formed within such opening can be utilized to form electrical contact to the capacitor electrode.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: February 28, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Nishant Sinha, Dinesh Chopra, Fred D. Fishburn
  • Patent number: 6989313
    Abstract: A capacitor has a lower electrode formed on an insulation layer, a dielectric layer formed on the lower electrode, an upper electrode layer formed on the dielectric layer, and a first protection layer pattern formed on the upper electrode layer. The upper electrode layer is etched using the first protection layer pattern to form an upper electrode. A second protection layer is formed enclosing the dielectric layer, the upper electrode and the first protection layer pattern.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: January 24, 2006
    Assignee: Samsung Electronics, Co., Ltd.
    Inventor: Sang-Hoon Park
  • Patent number: 6984568
    Abstract: A semiconductor memory device includes a bit line stack and a storage node contact hole which are aligned at bit line spacers formed at both side walls of the bit line stack and exposes a pad. The semiconductor memory device includes a multi-layered storage node contact plug in which a first storage node contact plug and a second storage node contact plug are sequentially formed. The first storage node contact plug is formed of titanium nitride and the second storage node contact plug is formed of polysilicon. An ohmic layer may be formed on the pad and under the first storage node contact plug. A barrier metal layer, which acts as a third storage node contact plug, may be formed on the second storage node contact plug.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: January 10, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Beom-jun Jin, Byeong-yun Nam
  • Patent number: 6974743
    Abstract: Semiconductor devices having improved isolation are provided along with methods of fabricating such semiconductor devices. The improved isolation includes an encapsulated spacer formed within a gate region of a device.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: December 13, 2005
    Assignees: Infineon Technologies AG, International Business Machines Corporation
    Inventors: Ramac Divakaruni, Stephan Kudelka, Jack Mandelman
  • Patent number: 6969649
    Abstract: A DRAM has, in one embodiment, a plurality of word lines each having its upper and side surfaces covered with a first insulating film, a plurality of bit lines each being provided so as to be insulated from and transverse to the word lines and being covered with a second insulating film, and a plurality of memory cells each provided at an intersection between one word line and one bit line and including a capacitor and a memory cell selection transistor, in which contact holes for connection between semiconductor regions and capacitors and between semiconductor regions and bit lines are formed in self-alignment and the second insulating film is made of a material having a permittivity smaller than that of the first insulating film.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: November 29, 2005
    Assignees: Hitachi, Ltd., Texas Instruments Incorporated
    Inventors: Toshihiro Sekiguchi, Yoshitaka Tadaki, Keizo Kawakita, Hideo Aoki, Toshikazu Kumai, Kazuhiko Saito, Michio Nishimura, Michio Tanaka, Katsuo Yuhara, Shinya Nishio, Toshiyuki Kaeriyama, Songsu Cho
  • Patent number: 6967134
    Abstract: The invention encompasses a method of forming a silicon nitride layer. A substrate is provided which comprises a first mass and a second mass. The first mass comprises silicon and the second mass comprises silicon oxide. A sacrificial layer is formed over the first mass. While the sacrificial layer is over the first mass, a nitrogen-containing material is formed across the second mass. After the nitrogen-containing material is formed, the sacrificial layer is removed. Subsequently, a silicon nitride layer is formed to extend across the first and second masses, with the silicon nitride layer being over the nitrogen-containing material. Also, a conductivity-enhancing dopant is provided within the first mass. The invention also pertains to methods of forming capacitor constructions.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: November 22, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Er-Xuan Ping, Zhiping Yin
  • Patent number: 6960479
    Abstract: The present invention relates to a ferroelectric polymer storage device including at least two stacked ferroelectric polymer memory structures that are arrayed next to at least two respective stacked topologies that are a pre-fabricated silicon substrate cavity that includes interlayer dielectric layers and via structures. Combining ferroelectric polymer and ferroelectric oxide layers on the pre-fabricated silicon substrate cavity forms a multi-rank structure.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: November 1, 2005
    Assignee: Intel Corporation
    Inventors: Jian Li, Xiao-Chun Mu
  • Patent number: 6953744
    Abstract: The present invention provides methods of fabricating integrated circuit devices that include a microelectronic substrate and a conductive layer disposed on the microelectronic substrate. An insulating layer is disposed on the conductive layer and the insulating layer includes an overhanging portion that extends beyond the conductive layer. A sidewall insulating region is disposed laterally adjacent to a sidewall of the conductive layer and extends between the overhanging portion of the insulating layer and the microelectronic substrate.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: October 11, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-Joon Kim, Young-Wook Park, Byeong-Yun Nam
  • Patent number: 6949480
    Abstract: Disclosed is a method for depositing a silicon nitride layer of a semiconductor device. The method includes the steps of providing Al-based compound as a catalyst, and reacting DCS with NH3 by using the Al catalyst, thereby depositing the silicon nitride layer. DCS is reacted with NH3 by using the Al catalyst when depositing the silicon nitride layer, so dissolution of DCS is promoted by means of the Al catalyst, so that the silicon nitride layer is deposited at a high speed, thereby improving productivity of semiconductor devices. The silicon nitride layer is deposited by using DCS under a low-temperature condition of about 500 to 800° C., without deteriorating device characteristics.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: September 27, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hyung Kyun Kim, Sung Hoon Jung, Yong Seok Eun
  • Patent number: 6943080
    Abstract: A method of manufacturing semiconductor device including a capacitor including a pair of electrodes and a ferroelectric flu with ferroelectricity sandwiched therebetween, by depositing the ferroelectric film on first substrate; forming the capacitor by grinding the ferroelectric film and forming the electrodes so that the electrodes are perpendicular to a direction of a polarization axis of the ferroelectric film; forming a first interlayer insulating film covering a surface of the first substrate and the capacitor; forming a transistor on a second substrate, the transistor including a ate electrode and a diffusion region; forming a second interlayer insulating film covering a surface of the second substrate and the transistor; flattening surfaces of the first and second interlayer insulating films by chemical mechanical polishing; integrating the first and second substrates by joining the flattened surfaces of the first and second interlayer insulating films; and removing the first substrate.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: September 13, 2005
    Assignee: Fujitsu Limited
    Inventor: Kenji Maruyama
  • Patent number: 6943081
    Abstract: Methods of forming an electronic structure can include forming an interlayer insulating layer on a substrate, and forming a storage node comprising a base and sidewalls extending away from the base. The interlayer insulating layer can have a contact hole therein exposing a portion of the substrate. Moreover, the storage node base can be in the contact hole and the sidewalls can extend away from the base and away from the substrate with portions of the sidewalls being within the contact hole and with portions of the sidewalls extending outside the contact hole beyond the interlayer insulating layer away from the substrate. Related structures are also discussed.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: September 13, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-Jun Lee, In-Seak Hwang, Ji-Chul Shin
  • Patent number: 6939762
    Abstract: It is an object of the present invention to provide a method for manufacturing a semiconductor device in which, when a cell capacitor of a DRAM and a capacitor element in an analog element region are mix-mounted on the same chip, the manufacturing steps can be simplified. First, the P type impurity region 13b and the P type well 13 are simultaneously formed. Next, the lower electrodes 55a and 55b of the capacitor elements 600a and 600b and the storage nodes 53a and 53b of the cell capacitors 700a and 700b are simultaneously formed. Next, a dielectric layer (ON layer 61) of the capacitor elements 600a and 600b and a dielectric layer (ON layer 61) of the cell capacitors 700a and 700b are simultaneously formed. Then, the upper electrodes 69a and 69b of the capacitor elements 600a and 600b and the cell plate 67 of the cell capacitors 700a and 700b are simultaneously formed.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: September 6, 2005
    Assignee: Fujitsu Limited
    Inventors: Hiroaki Tsugane, Hisakatsu Sato
  • Patent number: 6936906
    Abstract: The present invention generally relates to filling of a feature by depositing a barrier layer, depositing a seed layer over the barrier layer, and depositing a conductive layer over the seed layer. In one embodiment, the seed layer comprises a copper alloy seed layer deposited over the barrier layer. For example, the copper alloy seed layer may comprise copper and a metal, such as aluminum, magnesium, titanium, zirconium, tin, and combinations thereof. In another embodiment, the seed layer comprises a copper allloy seed layer deposited over the barrier layer and a second seed layer deposited over the copper alloy seed layer. The copper alloy seed layer may comprise copper and a metal, such as aluminum, magnesium, titanium, zirconium, tin, and combinations thereof The second seed layer may comprise a metal, such as undoped copper. In still another embodiment, the seed layer comprises a first seed layer and a second seed layer.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: August 30, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Hua Chung, Ling Chen, Jick Yu, Mei Chang
  • Patent number: 6936478
    Abstract: A ferroelectric capacitor has a top electrode, a bottom electrode, a ferroelectric body disposed between the top and bottom electrodes, and a dielectric lining disposed below the top electrode and above the bottom electrode, protecting the sides of the ferroelectric body. The ferroelectric body can be formed by chemical-mechanical polishing of a ferroelectric film. In a memory device, the capacitor is coupled to a transistor. The dielectric lining protects the ferroelectric body from etching damage during the fabrication process, obviating the need for repeated annealing to repair such damage, thereby avoiding the alteration of transistor characteristics that would be caused by such annealing.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: August 30, 2005
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Kouichi Tani, Yasushi Igarashi
  • Patent number: 6927127
    Abstract: Manufacturing a semiconductor memory by first forming a first insulating layer covering a conductive pad. Next forming and pattering a bit line conductive layer and a second insulating layer to expose a part of the first insulating layer. A third insulating layer covering the exposed surfaces of the first insulating layer is formed. Exposing an upper surface of the bit line conductive layer pattern and an upper surface of the third insulating layer. Removing part of the third insulating layer and first insulating layer to expose the conductive pad. Forming a spacer on the side walls of the bit line conductive layer pattern and the first insulating layer. An insulating layer pattern and a second spacer layer are respectively formed on the bit line conductive layer pattern and on a side wall of the first spacer and a conductive plug, which is in contact with the conductive pad is formed.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: August 9, 2005
    Assignee: Sasung Electronics Co., Ltd.
    Inventors: Jung-woo Seo, Tae-hyuk Ahn, Jeong-sic Jeon
  • Patent number: 6924208
    Abstract: An embodiment of the invention is a capacitor comprising a bottom electrode 70 coupled to a first interconnect 30a of the top metal level 10, a capacitor dielectric 90, sidewalls 105, and a top electrode 110 coupled to a second interconnect 30b of the top metal level 10. Another embodiment of the invention is a method of manufacturing a capacitor using a first mask 140 to form a material stack that includes a bottom electrode 70 coupled to a first interconnect 30a of the top metal level 10, a capacitor dielectric 90, and a partial top electrode 100. The method further includes using a second mask 150 to form a complete top electrode coupled to a second interconnect 30b of the top metal level 10.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: August 2, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Timothy A. Rost, Edmund Burke, Satyavolu S. Papa Rao, Rose Alyssa Keagy
  • Patent number: 6916722
    Abstract: A new method is provided for the creation of a high-reliability metal capacitor as part of back-end processing. A first layer of metal interconnect is created, a contact point is provided in the surface of the first layer of interconnect aligned with which a capacitor is to be created. A copper interconnect is formed overlying the contact point using TaN for the bottom plate, a high dielectric-constant dielectric material capacitor and using TaN for the top plate. The deposited layers are patterned and etched, a spacer layer is formed over sidewalls of the capacitor to prevent capacitor sidewall leakage. Top interconnect metal is then formed by first depositing a layer of etch stop material for further interconnection of the capacitor and the semiconductor devices provided in the underlying substrate.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: July 12, 2005
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chi-Feng Huang, Chun-Hon Chen, Shy-Chy Wong, Chih Hsien Lin
  • Patent number: 6916723
    Abstract: The invention includes a method of forming a rugged semiconductor-containing surface. A first semiconductor layer is formed over a substrate, and a second semiconductor layer is formed over the first semiconductor layer. Subsequently, a third semiconductor layer is formed over the second semiconductor layer, and semiconductor-containing seeds are formed over the third semiconductor layer. The seeds are annealed to form the rugged semiconductor-containing surface. The first, second and third semiconductor layers are part of a common stack, and can be together utilized within a storage node of a capacitor construction. The invention also includes semiconductor structures comprising rugged surfaces. The rugged surfaces can be, for example, rugged silicon.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: July 12, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Shenlin Chen, Trung Tri Doan, Guy T. Blalock, Lyle D. Breiner, Er-Xuan Ping
  • Patent number: 6913966
    Abstract: A capacitor for use in integrated circuits comprises a layer of conductive material. The layer of conductive material including at least a first portion and a second portion, wherein the first portion and the second portion are arranged in a predetermined pattern relative to one another to provide a maximum amount of capacitance per semiconductor die area.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: July 5, 2005
    Assignee: Micron Technology Inc.
    Inventors: R. Jacob Baker, Kurt D. Beigel
  • Patent number: 6913965
    Abstract: The present invention relates to metal-insulator-metal (MIM) capacitors and field effect transistors (FETs) formed on a semiconductor substrate. The FETs are formed in Front End of Line (FEOL) levels below the MIM capacitors which are formed in upper Back End of Line (BEOL) levels. An insulator layer is selectively formed to encapsulate at least a top plate of the MIM capacitor to protect the MIM capacitor from damage due to process steps such as, for example, reactive ion etching. By selective formation of the insulator layer on the MIM capacitor, openings in the inter-level dielectric layers are provided so that hydrogen and/or deuterium diffusion to the FETs can occur.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: July 5, 2005
    Assignee: International Busniess Machines Corporation
    Inventors: Wagdi W. Abadeer, Eric Adler, Zhong-Xiang He, Bradley Orner, Vidhya Ramachandran, Barbara A. Waterhouse, Michael Zierak
  • Patent number: 6913970
    Abstract: A semiconductor device formed by forming contact holes in the insulating film, that covers the source/drain of the MOSFET and the capacitor in the memory cell region, on the lower electrode of the capacitor by the same steps, then filling the plugs into contact holes, and then forming the contact hole on the upper electrode of the capacitor. Accordingly, there can be provided the semiconductor device having the ferroelectric capacitor, capable of simplifying respective wiring connection structures to the upper electrode and the lower electrode of the capacitor by suppressing the damage to the capacitor formed over the transistor.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: July 5, 2005
    Assignee: Fujitsu Limited
    Inventors: Kenichi Inoue, Yoshinori Obata, Takeyasu Saito, Kaoru Saigoh, Naoya Sashida, Koji Tani, Jirou Miura, Tatsuya Yokota, Satoru Mihara, Yukinobu Hikosaka, Yasutaka Ozaki
  • Patent number: 6911373
    Abstract: The present invention discloses a method including providing a substrate; forming a lower conductor over the substrate; forming a conducting nanostructure over the lower conductor; forming a thin dielectric over the conducting nanostructure; and forming an upper conductor over the thin dielectric. The present invention further discloses a device including a substrate; a lower conductor located over the substrate; a conducting nanostructure located over the lower conductor; a thin dielectric located over the conducting nanostructure; and an upper conductor located over the thin dielectric.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: June 28, 2005
    Assignee: Intel Corporation
    Inventors: Scot A. Kellar, Sarah E. Kim
  • Patent number: 6908639
    Abstract: An interface forming method includes forming a first layer containing a first chemical element and chemisorbing on the first layer an interface layer containing at least one monolayer of the first chemical element intermixed with a second chemical element different from the first chemical element. A second layer comprising the second chemical element can be formed on the interface layer. The first layer might not substantially contain the second chemical element, the second layer might not substantially contain the first chemical element, or both. An apparatus can include a first layer containing a first chemical element, an interface layer chemisorbed on the first layer, and a second layer containing a second element on the interface layer. The interface layer can contain at least one monolayer of the first chemical element intermixed with a second chemical element different from the first chemical element.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: June 21, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Cem Basceri, Gurtej S. Sandhu
  • Patent number: 6908826
    Abstract: The present invention relates to a semiconductor device and a method of fabricating the same for simplifying a fabrication process of the semiconductor device and enhancing the performance and yield of the device. A first metal wiring on a semiconductor substrate serves as a first electrode of a metal-insulator-metal (MIM) capacitor. A dielectric film pattern is formed on the first metal wiring. A first via-contact plug on the dielectric film pattern contacts a side of the first metal wiring. An interlayer insulation film is formed having second via-contact plugs in a parallel array structure. The second via-contact plugs contact the dielectric film pattern and serve as a second electrode of the MIM capacitor. A second metal wiring is formed on the interlayer insulation film to contact the first via-contact plug and the second via-contact plugs.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: June 21, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventor: Kil Ho Kim