Patents Examined by Jennifer M. Kennedy
  • Patent number: 6946344
    Abstract: A method for forming a trench capacitor. A semiconductor substrate with a trench is provided, and a trench capacitor is formed in the trench with a storage node and a node dielectric layer. The top portion of the trench is ion implanted to a predetermined angle to form an ion doped area on a sidewall of the top portion of the trench and a top surface of the trench capacitor. The ion doped area is oxidized to form an oxide layer. A sidewall semiconductor layer is formed on another sidewall using the oxide layer as a mask, and then the oxide layer is removed. A barrier layer is conformally formed on the surface of the trench, and the trench is filled with a conducting layer.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: September 20, 2005
    Assignee: Nanya Technology Corporation
    Inventors: Shih-Chung Chou, Yi-Nan Chen, Tzu-Ching Tsai
  • Patent number: 6946343
    Abstract: A manufacturing method of an integrated chip. The integrated chip includes at least two devices with different functions. The method uses a first production line to form a first device on a semiconductor wafer and then uses a second production line to form a second device on the semiconductor wafer so as to complete the integrated chip.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: September 20, 2005
    Assignee: United Microelectronics Corp.
    Inventor: Fu-Tai Liou
  • Patent number: 6946345
    Abstract: The invention provides a trench storage structure that includes a substrate having a trench, a capacitor conductor in the lower part of the trench, a conductive node strap in the trench adjacent the capacitor conductor, a trench top oxide above the capacitor conductor, and a conductive buried strap in the substrate adjacent the trench top oxide. The trench top oxide includes a doped trench top oxide layer above the conductive strap, and an undoped trench top oxide layer above the doped trench top oxide layer.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: September 20, 2005
    Assignee: International Business Machines Corporation
    Inventors: Jochen Beintner, Wolfgang Bergner, Richard A. Conti, Andreas Knorr, Rolf Weis
  • Patent number: 6943066
    Abstract: An electronic device is formed from electronic elements deposited on a substrate. The electronic elements are deposited on the substrate by advancing the substrate through a plurality of deposition vacuum vessels, with each deposition vacuum vessel having at least one material deposition source and a shadowmask positioned therein. The material from at least one material deposition source positioned in each deposition vacuum vessel is deposited on the substrate through the shadowmask positioned in the deposition vacuum vessel to form on the substrate a circuit comprised of an array of electronic elements. The circuit is formed solely by the successive deposition of materials on the substrate.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: September 13, 2005
    Assignee: Advantech Global, LTD
    Inventors: Thomas P. Brody, Paul R. Malmberg, David J. Stapleton, Robert E. Stapleton
  • Patent number: 6940112
    Abstract: A capacitor for a memory device is formed with a conductive oxide for a bottom electrode. The conductive oxide (RuOx) is deposited under low temperatures as an amorphous film. As a result, the film is conformally deposited over a three dimensional, folding structure. Furthermore, a subsequent polishing step is easily performed on the amorphous film, increasing wafer throughput. After deposition and polishing, the film is crystallized in a non-oxidizing ambient.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: September 6, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Howard E. Rhodes, Mark Visokay, Tom Graettinger, Dan Gealy, Gurtej Sandhu, Cem Basceri, Steve Cummings
  • Patent number: 6939753
    Abstract: A liquid crystal display device includes an upper plate, a lower plate, and a liquid crystal. A sealant is formed along edges of the upper and lower plates to join the upper plate with the lower plate, and a protrusion separates the sealant from a picture displaying area at an inner portion of the upper and lower plates. The liquid crystal injected into the picture displaying area.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: September 6, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventor: Sang Seok Lee
  • Patent number: 6936894
    Abstract: A wafer bonding method of forming silicon-on-insulator comprising integrated circuitry includes nitridizing at least a portion of an outer surface of silicon of a device wafer. After the nitridizing, the device wafer is joined with a handle wafer. A method of forming silicon-on-insulator comprising integrated circuitry includes nitridizing an interface of the silicon comprising layer of silicon-on-insulator circuitry with the insulator layer of the silicon-on-insulator circuitry. After the nitridizing, a field effect transistor gate is formed operably proximate the silicon comprising layer. Other methods are disclosed. Integrated circuitry is contemplated regardless of the method of fabrication.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: August 30, 2005
    Assignee: Micron Technology, Inc.
    Inventor: Zhongze Wang
  • Patent number: 6933193
    Abstract: A carbon containing masking layer is patterned to include a plurality of container openings therein having minimum feature dimensions of less than or equal to 0.20 micron. The container openings respectively have at least three peripheral corner areas which are each rounded. The container forming layer is plasma etched through the masking layer openings. In one implementation, such plasma etching uses conditions effective to both a) etch the masking layer to modify shape of the masking layer openings by at least reducing degree of roundness of the at least three corners in the masking layer, and b) form container openings in the container forming layer of the modified shapes. Capacitors comprising container shapes are formed using the container openings in the container forming layer. Other implementations and aspects are disclosed.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: August 23, 2005
    Assignee: Micron Technology, Inc.
    Inventor: Aaron R. Wilson
  • Patent number: 6927123
    Abstract: A method for forming a self-aligned buried strap in a vertical memory cell. A semiconductor substrate with a trench is provided, a capacitor wire is formed on the bottom portion of the trench, and a collar dielectric layer is formed between the capacitor wire and the semiconductor substrate to act as an isolation. The capacitor wire and the collar dielectric layer are etched to a predetermined depth, such that a gap is formed between the spacer and the capacitor wire and the collar dielectric layer. Ions are doped into the exposed semiconductor substrate to form an ion doped area acting as a buried strap. The spacer is removed, and an exposed collar dielectric layer is etched below the level of the surface of the capacitor wire, and a groove is formed between the capacitor wire and the trench sidewall to fill with a conducting layer.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: August 9, 2005
    Assignee: Nanya Technology Corporation
    Inventors: Cheng-Chih Huang, Sheng-Wei Yang, Neng-Tai Shih, Chen-Chou Huang
  • Patent number: 6927442
    Abstract: A semiconductor device for a charge pump device suitable for providing large current capacity and preventing a latch up from occurring is offered. A first and a second N-type epitaxial silicon layers are stacked on a P-type single crystalline silicon substrate, and P-type well regions are formed in the second epitaxial silicon layer. P+-type buried layers abutting on bottoms of the P-type well regions and N+-type buried layers abutting on bottoms of the P+-type buried layers and electrically isolating the P-type well regions from the single crystalline silicon substrate are formed. An MOS transistor is formed in each of the P-type well regions and a drain layer of the MOS transistor and each of the P-type well regions are electrically connected.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: August 9, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Satoru Kaneko, Toshiyuki Ohkoda, Takao Myono
  • Patent number: 6919273
    Abstract: A TiSiN film is used as a barrier metal layer for a semiconductor device to prevent the diffusion of Cu. The TiSiN film is formed by a plasma CVD process or a thermal CVD process. TiCl4 gas, a silicon hydride gas and NH3 gas are used as source gases for forming the TiSiN film by the thermal CVD process. TiCl4 gas, a silicon hydride gas, H2 gas and N2 gas are used as source gases for forming a TiSiN film by the plasma CVD process.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: July 19, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Hayashi Otsuki, Kunihiro Tada, Kimihiro Matsuse
  • 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: 6903420
    Abstract: A wafer bonding method of forming silicon-on-insulator comprising integrated circuitry includes nitridizing at least a portion of an outer surface of silicon of a device wafer. After the nitridizing, the device wafer is joined with a handle wafer. A method of forming silicon-on-insulator comprising integrated circuitry includes nitridizing an interface of the silicon comprising layer of silicon-on-insulator circuitry with the insulator layer of the silicon-on-insulator circuitry. After the nitridizing, a field effect transistor gate is formed operably proximate the silicon comprising layer. Other methods are disclosed. Integrated circuitry is contemplated regardless of the method of fabrication.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 7, 2005
    Assignee: Micron Technology, Inc.
    Inventor: Zhongze Wang
  • Patent number: 6900546
    Abstract: A conductive portion connects a lower conductive layer formed on a semiconductor substrate provided in a first interlayer insulating layer to an upper conductive layer formed on the lower conductive layer, and provided in a second interlayer insulating layer. This portion is divided into at least one plug and a pad. At least one plug is formed in a first interlayer insulating layer and the lower part of a second interlayer insulating layer. The second interlayer insulating layer is divided into a plurality of interlayer insulating layers so that upper and lower widths of the divided plugs formed in the divided portion of the second interlayer insulating layer are not greatly different from each other. The pad formed on the upper portion of the second interlayer insulating layer has an upper width such that the upper conductive layer connected to the pad is not undesirably connected to an adjacent upper conductive layer via the pad.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: May 31, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-Suk Yang, Sang-Hoo Song, Ki-Nam Kim, Hong-Sik Jeong
  • Patent number: 6897108
    Abstract: The present invention provides a process for planarizing array top oxide (ATO) in vertical MOSFET DRAM arrays. In contrast to the prior art ARC-RIE planarization method for EA/ES (etch array/etch support) module, the present invention takes advantage of chemical mechanical polishing (CMP) technique to overcome residue problems that used to occur at the transition region or array edge. It might cause capacitor device failure when ATO residue is left on the transition region.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: May 24, 2005
    Assignee: Nanya Technology Corp.
    Inventors: Sheng-Wei Yang, Cheng-Chih Huang, Chien-Mao Liao
  • Patent number: 6864155
    Abstract: A wafer bonding method of forming silicon-on-insulator comprising integrated circuitry includes nitridizing at least a portion of an outer surface of silicon of a device wafer. After the nitridizing, the device wafer is joined with a handle wafer. A method of forming silicon-on-insulator comprising integrated circuitry includes nitridizing an interface of the silicon comprising layer of silicon-on-insulator circuitry with the insulator layer of the silicon-on-insulator circuitry. After the nitridizing, a field effect transistor gate is formed operably proximate the silicon comprising layer. Other methods, are disclosed. Integrated circuitry is contemplated regardless of the method of fabrication.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: March 8, 2005
    Assignee: Micron Technology, Inc.
    Inventor: Zhongze Wang
  • Patent number: 6855594
    Abstract: A method of forming a capacitor includes forming a conductive metal first electrode layer over a substrate, with the conductive metal being oxidizable to a higher degree at and above an oxidation temperature as compared to any degree of oxidation below the oxidation temperature. At least one oxygen containing vapor precursor is fed to the conductive metal first electrode layer below the oxidation temperature under conditions effective to form a first portion oxide material of a capacitor dielectric region over the conductive metal first electrode layer. At least one vapor precursor is fed over the first portion at a temperature above the oxidation temperature effective to form a second portion oxide material of the capacitor dielectric region over the first portion. The oxide material of the first portion and the oxide material of the second portion are common in chemical composition. A conductive second electrode layer is formed over the second portion oxide material of the capacitor dielectric region.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: February 15, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Vishwanath Bhat, Chris M. Carlson, F. Daniel Gealy
  • Patent number: 6852551
    Abstract: A method of forming a ferroelectric film includes the steps of forming a layer by a material that takes a metal state in a reducing ambient and an oxide state in an oxidizing ambient, and depositing a ferroelectric film on a surface of the layer by supplying gaseous sources of the ferroelectric film and an oxidizing gas and causing a decomposition of the gaseous sources at the surface of said layer, wherein the step of depositing the ferroelectric film is started with a preparation step in which the state of the surface of said layer is controlled substantially to a critical point in which the layer changes from the metal state to the oxide state and from the oxide state to the metal state.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: February 8, 2005
    Assignee: Fujitsu Limited
    Inventor: Hideki Yamawaki
  • Patent number: 6849495
    Abstract: A memory device and method of manufacturing thereof, wherein a silicide material is selectively formed over active regions of a memory device. A silicide material may also be formed on the top surface of wordlines adjacent the active regions during the selective silicidation process. A single nitride insulating layer is used, and portions of the workpiece are covered with photoresist during the formation of the silicide material.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: February 1, 2005
    Assignee: Infineon Technologies AG
    Inventors: Paul Wensley, Mohammed Fazil Fayaz, Martin Commons
  • Patent number: 6841425
    Abstract: Methods for treating a wafer to protect a fuse box of a semiconductor chip are provided. These methods include applying an insulating coating solution onto the surface of at least one of a plurality of fuse boxes in a semiconductor chip so as to prevent moisture or impurities from seeping into the fuse box. With these methods, the degradation of the semiconductor chip can be substantially reduced by protecting the fuse box from a high-temperature and very humid atmosphere, and impurities such as particles. Thus, characteristics and reliability of the semiconductor chip can be also improved.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: January 11, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Il Lee, Jeong-Ho Bang, Young-Moon Lee, Hyo-Geun Chae