Patents Examined by Craig Thompson
  • Patent number: 6764956
    Abstract: The invention includes a method of treating a predominantly inorganic dielectric material on a semiconductor wafer. A laser is utilized to generate activated oxygen species. Such activated oxygen species react with a component of the dielectric material to increase an oxygen content of the dielectric material. The invention also includes a method of forming a capacitor construction. A first capacitor electrode is formed to be supported by a semiconductor substrate. A dielectric material is formed over the first capacitor electrode. A precursor is provided at a location proximate the dielectric material, and a laser beam is focused at such location. The laser beam generates an activated oxygen species from the precursor. The activated oxygen species contacts the dielectric material. Subsequently, a second capacitor electrode is formed over the dielectric material.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: July 20, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Trung Tri Doan
  • Patent number: 6765250
    Abstract: This invention pertains to a method of fabricating a trenchless MRAM structure and to the resultant MRAM structure. The MRAM structure of the invention has a pinned layer formed within protective sidewalls formed over a substrate. The protective sidewalls facilitate formation of the MRAM structure by a self-aligning process.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: July 20, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Trung T. Doan, Roger Lee, Dennis Keller, Gurtej Sandhu, Ren Earl
  • Patent number: 6762086
    Abstract: A method for fabricating a semiconductor device, includes the steps of forming a triple well including a first conductive type well in a semiconductor substrate, wherein a cell transistor is to be formed on the first conductive type well, sequentially forming a gate oxide layer and a gate electrode on a triple well, forming a source/drain region in the first conductive type well by implanting second conductive type dopant and forming a threshold voltage ion implantation region beneath the gate electrode by implanting first conductive type dopant to the first conductive type well with a ion implantation energy enough to pass through the gate electrode, wherein the threshold voltage ion implantation region surrounds the source/drain region.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: July 13, 2004
    Assignee: Hynix Semiconductor Inc.
    Inventor: Jae-Geun Oh
  • Patent number: 6762081
    Abstract: To fabricate a crystalline semiconductor film with controlled locations and sizes of the crystal grains, and to utilize the crystalline semiconductor film in the channel-forming region of a TFT in order to realize a high-speed operable TFT. A translucent insulating thermal conductive layer 2 is provided in close contact with the main surface of a substrate 1, and an insular or striped first insulating layer 3 is formed in selected regions on the thermal conductive layer. A second insulating layer 4 and semiconductor film 5 are laminated thereover. The semiconductor film 5 is first formed with an amorphous semiconductor film, and then crystallized by laser annealing. The first insulating layer 3 has the function of controlling the rate of heat flow to the thermal conductive layer 2, and the temperature distribution difference on the substrate 1 is utilized to form a single-crystal semiconductor film on the first insulating layer 3.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: July 13, 2004
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yasuyuki Arai
  • Patent number: 6759313
    Abstract: In a manufacturing process of a semiconductor device using a substrate having low heat resistance, such as a class substrate, there is provided a method of efficiently carrying out crystallization of a semiconductor film and gettering treatment of a catalytic element used for the crystallization by a heating treatment in a short time without deforming the substrate. A heating treatment method of the present invention is characterized in that a light source is controlled in a pulsed manner to irradiate a semiconductor film, so that a heating treatment of the semiconductor film is efficiently carried out in a short time, and damage of the substrate due to heat is prevented.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: July 6, 2004
    Assignee: Semiconductor Energy Laboratory Co., LTD
    Inventors: Shunpei Yamazaki, Tamae Takano, Koji Dairiki
  • Patent number: 6759348
    Abstract: A method for forming a pattern includes filling a resist in a groove of a cliché corresponding to the position of the pattern to be formed, transferring the resist which is filled in the groove onto a printing roll by rotating the printing roll in a direction parallel to the longest portion lengthwise direction of a pattern formed in cliché, and applying the resist on an etching object layer by rotating the printing roll along the etching object layer on a substrate.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: July 6, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: So-Haeng Cho, Yong-Jin Cho, Dong-Hoon Lee
  • Patent number: 6759269
    Abstract: In a method for fabricating a Si—Al alloy packaging material, by adding Al—Si alloy powders to Si powders and pressurizing-forming it, or by pressurizing-filling Si powders or a preforming body of Si powders with Al—Si alloy melt, a Si—Al alloy packaging material having good characteristics can be obtained.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: July 6, 2004
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyun-Kwang Seok, Jae-Chul Lee, Ho-In Lee, Jin-Kook Yoon, Ji-Young Byun
  • Patent number: 6750126
    Abstract: Methods are disclosed for fabricating transistor gate structures and high-k dielectric layers therefor by sputter deposition, in which nitridation and/or oxidation or other adverse reaction of the semiconductor material is reduced or minimized by reducing the bombardment of the semiconductor body by positively charged reactive ions such as oxygen ions or nitrogen ions during the sputter deposition process. The sputtering operation may be a two-step process in which ionic bombardment of the semiconductor material is minimized in an initial deposition step to form a first layer portion covering the semiconductor body, and the second step completes the desired high-k dielectric layer. Mitigation of unwanted nitridation and/or oxidation or other adverse reaction is achieved through one, some, or all of high sputtering deposition pressure, repulsive wafer biasing, increased wafer-plasma spacing, low partial pressures for reactant gases, and low sputtering powers or power densities.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: June 15, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Mark Visokay, James Joseph Chambers, Luigi Colombo, Antonio Luis Pacheco Rotondaro
  • Patent number: 6750505
    Abstract: A process for fabricating non-volatile memory cells on a semiconductor substrate includes forming a stack structure comprised of a first polysilicon layer isolated from the substrate by an oxide layer. The first polysilicon layer, oxide layer, and semiconductor substrate are cascade etched to define a first portion of a floating gate region of the cell and at least one trench bordering an active area of the memory cell. The at least one trench is filled with an isolation layer. The process further includes depositing a second polysilicon layer onto the whole exposed surface of the semiconductor, and etching the second polysilicon layer to expose the floating gate region formed in the first polysilicon layer, thereby forming extensions adjacent the above portion of the first polysilicon layer.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: June 15, 2004
    Assignee: StMicroelectronics S.r.l.
    Inventors: Roberto Bez, Emilio Camerlenghi, Stefano Ratti
  • Patent number: 6746946
    Abstract: A method and apparatus for producing printed circuits utilizing direct printing methods to apply a pattern mask to a substrate. The pattern mask may be an etch resist mask for forming conductive pathways by an etching process, or the pattern mask may be a plating mask with conductive pathways being formed by a plating operation. The process of the present invention is applicable to forming both single-sided and double sided printed circuit boards.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: June 8, 2004
    Inventor: N. Edward Berg
  • Patent number: 6746952
    Abstract: Diffusion barrier film layers and methods of manufacture and use are provided. The films comprise boron-doped TiCl4-based titanium nitride, and provide an improved diffusion barrier having good adhesive, electrical conductivity, and anti-diffusion properties. The films can be formed on a silicon substrate without an underlying contact layer such as TiSix, an improvement in the fabrication of contacts to shallow junctions and other miniature components of integrated circuits.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: June 8, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Ammar Derraa, Sujit Sharan, Paul Castrovillo
  • Patent number: 6746953
    Abstract: Metal taps for bus conductors are formed within an active layer, within one or more of the metallization levels, on the active side of a substrate in the area of a bus via. Alignment marks are formed in the same metallization level, in the same area. A slot is then blind etched from the backside of the substrate, exposing the metal taps and the alignment marks. The slot is etched, using an oxide or nitride hard mask, into the backside surface of the substrate with significantly sloped sidewalls, allowing metal to be deposited and patterned on the backside. An insulating layer and deposited metal on the backside surface of the substrate may require a blind etch to expose alignment marks, if any, but front-to-back alignment precision utilizing the exposed alignment marks may permit much smaller design rules for both the metal tabs and the backside interconnects formed from the metal layer. Backside contact pads may also be formed from the metal layer.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: June 8, 2004
    Assignee: STMicroelectronics, Inc.
    Inventors: Alan H. Kramer, Danielle A. Thomas
  • Patent number: 6743700
    Abstract: A semiconductor film having a crystalline structure is formed by using a metal element that assists the crystallization of the semiconductor film, and the metal element remaining in the film is effectively removed to decrease the dispersion among the elements. The semiconductor film or, typically, an amorphous silicon film having an amorphous structure is obtained based on the plasma CVD method as a step of forming a gettering site, by using a monosilane, a rare gas element and hydrogen as starting gases, the film containing the rare gas element at a high concentration or, concretely, at a concentration of 1×1020/cm3 to 1×1021/cm3 and containing fluorine at a concentration of 1×1015/cm3 to 1×1017/cm3.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: June 1, 2004
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Taketomi Asami, Mitsuhiro Ichijo, Noriyoshi Suzuki, Hideto Ohnuma, Masato Yonezawa
  • Patent number: 6737301
    Abstract: Power semiconductor switching devices, power converters, integrated circuit assemblies, integrated circuitry, power current switching methods, methods of forming a power semiconductor switching device, power conversion methods, power semiconductor switching device packaging methods, and methods of forming a power transistor are described. One exemplary aspect provides a power semiconductor device including a semiconductive substrate having a surface; and a power transistor having a planar configuration and comprising a plurality of electrically coupled sources and a plurality of electrically coupled drains formed using the semiconductive substrate and adjacent the surface.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: May 18, 2004
    Assignee: Isothermal Systems Research, Inc.
    Inventors: Richard C. Eden, Bruce A. Smetana
  • Patent number: 6737670
    Abstract: A process for producing monocrystalline semiconductor layers. In an exemplary embodiment, a graded Si1−xGex (x increases from 0 to y) is deposited on a first silicon substrate, followed by deposition of a relaxed Si1−yGey layer, a thin strained Si1−zGez layer and another relaxed Si1−yGey layer. Hydrogen ions are then introduced into the strained SizGez layer. The relaxed Si1−yGey layer is bonded to a second oxidized substrate. An annealing treatment splits the bonded pair at the strained Si layer, such that the second relaxed Si1−yGey layer remains on the second substrate. In another exemplary embodiment, a graded Si1−xGex is deposited on a first silicon substrate, where the Ge concentration x is increased from 0 to 1. Then a relaxed GaAs layer is deposited on the relaxed Ge buffer. As the lattice constant of GaAs is close to that of Ge, GaAs has high quality with limited dislocation defects.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: May 18, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Zhi-Yuan Cheng, Eugene A. Fitzgerald, Dimitri A. Antoniadis, Judy L. Hoyt
  • Patent number: 6734039
    Abstract: A chip level package utilizing a CGA is described. A semiconductor chip with pillars is molded in an encapsulant. Solder balls are added and connected to the chip pillars. The final package does not require a first level substrate or interposer and is able to be assembled to the next level as is.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: May 11, 2004
    Assignee: Advanpack Solutions Pte Ltd.
    Inventors: Tan Kim Hwee, Roman Perez, Kee Kwang Lau, Alex Chew, Antonio Dimaano
  • Patent number: 6734051
    Abstract: A first cleaning is conducted on a plasma enhanced chemical vapor deposition chamber at room ambient pressure. After the first cleaning, elemental titanium comprising layers are chemical vapor deposited on a first plurality of substrates within the chamber using at least TiCl4. Thereafter, titanium silicide comprising layers are plasma enhanced chemical vapor deposited on a second plurality of substrates within the chamber using at least TiCl4 and a silane. Thereafter, a second cleaning is conducted on the chamber at ambient room pressure. In one implementation after the first cleaning, an elemental titanium comprising layer is chemical vapor deposited over internal surfaces of the chamber while no semiconductor substrate is received within the chamber. In another implementation, a titanium silicide comprising layer is chemical vapor deposited over internal surfaces of the chamber while no semiconductor substrate is received within the chamber.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: May 11, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Cem Basceri, Irina Vasilyeva, Ammar Derraa, Philip H. Campbell, Gurtej S. Sandhu
  • Patent number: 6734085
    Abstract: A method is provided for turning off MOS transistors through an anti-code (type) LDD implant without the need for high energy implant that causes poly damage. The method also negates any deleterious effects due to the variations in the thickness of the poly gate. The anti-code LDD implant can be performed vertically, or at a tilt angle, or in a combination of vertical and tilt angle. The method can be made part of a Flash-ROM process that is applicable to both polycide and silicide processes.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: May 11, 2004
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Shu-Ying Cho, Chien-Chung Wang, Chien-Ming Chung, Yuan-Chang Huang
  • Patent number: 6730551
    Abstract: A structure and a method for forming the structure, the method including forming a compressively strained semiconductor layer, the compressively strained layer having a strain greater than or equal to 0.25%. A tensilely strained semiconductor layer is formed over the compressively strained layer. The compressively strained layer is substantially planar, having a surface roughness characterized in (i) having an average wavelength greater than an average wavelength of a carrier in the compressively strained layer or (ii) having an average height less than 10 nm.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: May 4, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Minjoo L. Lee, Christopher W. Leitz, Eugene A. Fitzgerald
  • Patent number: 6730537
    Abstract: A method for forming arrays of metal, alloy, semiconductor or magnetic clusters is described. The method comprises placing a scaffold on a substrate, the scaffold comprising, for example, polynucleotides and/or polypeptides, and coupling the clusters to the scaffold. Methods of producing arrays in predetermined patterns and electronic devices that incorporate such patterned arrays are also described.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: May 4, 2004
    Assignee: The State of Oregon acting by and through the State Board of Higher Education on behalf of the University of Oregon
    Inventors: James E. Hutchison, Scott M. Reed