Transparent Conductor Patents (Class 204/192.29)
  • Patent number: 7153453
    Abstract: There is provided an amorphous transparent conductive thin film with a low resistivity, a low absolute value for the internal stress of the film, and a high transmittance in the visible light range, an oxide sintered body for manufacturing the amorphous transparent conductive thin film, and a sputtering target obtained therefrom. An oxide sintered body is obtained by: preparing In2O3 powder, WO3 powder, and ZnO powder with an average grain size of less than 1 ?m so that tungsten is at a W/In atomic number ratio of 0.004 to 0.023, and zinc is at a Zn/In atomic number ratio of 0.004 to 0.100; mixing the prepared powder for 10 to 30 hours; granulating the obtained mixed powder until the average grain size is 20 to 150 ?m; molding the obtained granulated powder by a cold isostatic press with a pressure of 2 to 5 ton/cm2, and sintering the obtained compact at 1200 to 1500 degree.C.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 26, 2006
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Yoshiyuki Abe, Tokuyuki Nakayama, Go Ohara, Riichiro Wake
  • Patent number: 7141186
    Abstract: An oxide sintered body for sputtering target is provided wherein the main component is indium oxide, and it contains titanium such that the atomic ratio of Ti/In is 0.003 to 0.120, and the specific resistance is 1 k.cm or less.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: November 28, 2006
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Yoshiyuki Abe, Noriko Ishiyama, Go Ohara
  • Patent number: 7135097
    Abstract: Disclosed is a box-shaped facing-targets sputtering apparatus capable of forming, at low temperature, a compound thin film of high quality while causing minimal damage to an underlying layer.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: November 14, 2006
    Assignee: FTS Corporation
    Inventors: Sadao Kadokura, Hisanao Anpuku
  • Patent number: 7125503
    Abstract: A transparent conductive thin film which can be produced easily by sputtering or the like with a sintered target, needs no post-treatment such as etching or grinding, is low in resistance and excellent in surface smoothness, and has a high transmittance in the low-wavelength region of visible rays; and transparent, electroconductive substrate for a display panel and an organic electroluminescence device excellent in light-emitting characteristics, both including the transparent conductive thin film. More particularly, a transparent conductive thin film comprising indium oxide as the major component and silicon as a dopant, having a substantially amorphous structure, wherein silicon is incorporated at 0.5 to 13% by atom on indium and silicon totaled; and a transparent conductive thin film comprising indium oxide as the major component and tungsten and germanium, wherein tungsten is incorporated at a W/In atomic ratio of 0.003 to 0.047 and germanium is incorporated at a Ge/In atomic ratio of 0.001 to 0.190.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: October 24, 2006
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventor: Yoshiyuki Abe
  • Patent number: 7041430
    Abstract: Problem to be solved is that when an information recording medium is repeatedly subjected to recording of information several hundreds times, the atoms in a protective layer are diffused and dissolved into a recording layer to lower a reflectivity greatly and make the medium unendurable to many times of overwriting. This problem can be solved by a medium constituted of interference layer 10, interface layer 12, phase-change type recording layer 14, protective layer 13 having a tin content of from 23.3 atomic % to 32.3 atomic %, and a heat sink layer 8 successively formed on substrate 1, as seen from a light-incidence side. By use of this medium, the dissolution of atoms can be prevented, and overwriting for many times can be achieved.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: May 9, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Miyamoto, Akemi Hirotsune, Toshimichi Shintani, Takahiro Kurokawa, Keikichi Andoo, Yumiko Anzai
  • Patent number: 7008519
    Abstract: The present invention provides an ITO sputtering target for forming a high-resistance transparent conductive film which target can be used virtually in a DC magnetron sputtering apparatus and can form a high-resistance, transparent film, and a method for producing a high-resistance transparent conductive film. The sputtering target for forming a high-resistance transparent conductive film having a resistivity of about (0.8–10)×10?3 ?cm contains indium oxide, an insulating oxide, and optionally tin oxide.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: March 7, 2006
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Seiichiro Takahashi, Makoto Ikeda, Hiroshi Watanabe
  • Patent number: 6995891
    Abstract: An electrochromic device is achieved that exhibits the characteristics of impact-resistant safety glass by starting with a solid electrolyte sheet material and a peripheral sealant material sandwiched between substrates to heat and pressure such that the electrolyte bonds to the treated surfaces of the substrates with an adhesion of at least 1.8 kg/linear cm width causing the electrolyte to exhibit a tensile strength of at least 5 kg/cm2.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: February 7, 2006
    Assignees: Schott North America Inc., Magna Donnelly Corporation
    Inventors: Anoop Agrawal, Yasser Elkadi, Torsten Holdmann
  • Patent number: 6860974
    Abstract: There are provided techniques of forming a back reflecting layer with constant characteristics throughout long-term film formation and forming a metal oxide film so as to be able to maintain a current of a bottom cell and thereby keep a short-circuit current Jsc of a solar cell constant over a long period of time. A sputtering method is a method of forming a stack of a metal film and a metal oxide film, comprising the step 1 of forming a metal layer on a substrate, the step 2 of bringing a surface of the metal layer into contact with active oxygen, and the step 3 of forming a metal oxide film thereon after the step 2, wherein in the step 2 an amount of active oxygen at a first substrate position is different from that at a second substrate position.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: March 1, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Echizen, Yasuyoshi Takai, Akiya Nakayama
  • Publication number: 20040238346
    Abstract: There are provided:
    Type: Application
    Filed: June 28, 2004
    Publication date: December 2, 2004
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takeshi Hattori, Kunio Saegusa, Yuzo Shigesato
  • Publication number: 20040231981
    Abstract: The present invention provides an ITO sputtering target for forming a high-resistance transparent conductive film which target can be used virtually in a DC magnetron sputtering apparatus and can form a high-resistance, transparent film, and a method for producing a high-resistance transparent conductive film. The sputtering target for forming a high-resistance transparent conductive film having a resistivity of about (0.8-10)×10−3 &OHgr;cm contains indium oxide, an insulating oxide, and optionally tin oxide.
    Type: Application
    Filed: May 23, 2003
    Publication date: November 25, 2004
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Seiichiro Takahashi, Makoto Ikeda, Hiroshi Watanabe
  • Publication number: 20040231974
    Abstract: A metal oxide semiconductor gas sensor and a method for production thereof. The sensor comprises a sensor-active metal oxide thin layer applied to a substrate, in contact with at least one electrode. The sensor-active metal oxide thin layer comprises a chromium/titanium oxide (CTO) layer with a thickness of about 10 nm to about 1 &mgr;m. The chromium and titantium layers are applied over each other using thin layer technology and are subsequently tempered.
    Type: Application
    Filed: April 20, 2004
    Publication date: November 25, 2004
    Inventors: Harald Bottner, Jurgen Wollenstein, Gerd Kuhner
  • Patent number: 6822158
    Abstract: A thin-film solar cell including a transparent electrode layer, a semiconductor photovoltaic conversion layer, a rear transparent electrode layer and a rear reflective metal layer, said layers being formed in this order on a transparent substrate, wherein the rear transparent electrode has a two-layer structure of an ITO or ZnO:Ga layer and a ZnO:Al layer formed in this order on the semiconductor photovoltaic conversion layer.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 23, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Ouchida, Hitoshi Sannomiya
  • Publication number: 20040222089
    Abstract: The present invention is directed to a sputtering target which inhibits formation of nodules during sputtering so as to form a transparent conductive film, thereby reliably forming the film, and to a transparent conductive film exhibiting excellent etching processability. The sputtering target is formed of a specific sintered metal oxide product composed of indium oxide, gallium oxide, and zinc oxide (1) or a specific sintered metal oxide product composed of indium oxide, gallium oxide, and germanium oxide (2).
    Type: Application
    Filed: March 18, 2004
    Publication date: November 11, 2004
    Inventors: Kazuyoshi Inoue, Shigeo Matsuzaki
  • Patent number: 6793782
    Abstract: The invention is a novel sputter deposition process for thin film phosphors that provide high luminance and colors required for TV applications.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: September 21, 2004
    Assignee: IFIRE Technology Inc.
    Inventor: Alexander Kosyachkov
  • Publication number: 20040180217
    Abstract: A sputtering target including indium oxide and tin oxide, the content by percentage of the tin atoms therein being from 3 to 20 atomic % of the total of the indium atoms and the tin atoms, and the maximum grain size of indium oxide crystal in the sputtering target being 5 &mgr;m or less. When a transparent conductive film is formed by sputtering, this sputtering target makes it possible to suppress the generation of nodules on the surface of the target and to conduct the sputtering stably.
    Type: Application
    Filed: January 30, 2004
    Publication date: September 16, 2004
    Inventors: Kazuyoshi Inoue, Shigeo Matsuzaki
  • Publication number: 20040140198
    Abstract: Disclosed is a method of forming an ITO film by optimized sequential sputter deposition of seed and bulk layers having different sputter process conditions, which is applicable to various display devices, and more particularly, to an organic light-emitting device needing an ultra-planarized surface roughness. In forming a transparent conducting electrode of a display device on a transparent substrate with an ITO film including a seed layer and a bulk layer, a method of forming the ITO film includes a first sputter deposition step of forming the ITO film on the substrate with sputtering gas supplied to an ion source at an ambience of oxygen flowing in the vicinity of the substrate and a second sputter deposition step of forming the ITO film with the sputtering gas supplied to the ion source only, wherein the first and second sputter deposition steps have different process conditions, respectively and wherein the seed and bulk layers are deposited by the first or second sputter deposition step.
    Type: Application
    Filed: January 7, 2004
    Publication date: July 22, 2004
    Inventors: Jun-Sik Cho, Young-Gun Han, Young-Whoan Beag, Seok-Keun Koh
  • Publication number: 20040137280
    Abstract: A transparent oxide electrode film is provided to have crystalline indium oxide as its main component, in which the indium in the indium oxide is substituted with titanium at a titanium/indium atomic ratio between 0.003 and 0.120, and the resitivity of the transparent oxide electrode film is 5.7×10−4 &OHgr;cm or less, so as to provide excellent transmittance for both the visible light region and the infrared light region, and low resistivity.
    Type: Application
    Filed: October 2, 2003
    Publication date: July 15, 2004
    Inventors: Yoshiyuki Abe, Noriko Ishiyama
  • Publication number: 20040033424
    Abstract: This invention relates to semiconductor devices, microelectronic devices, micro electro mechanical devices, microfluidic devices, photonic devices, and more particularly to a lithographic template, a method of forming the lithographic template and a method for forming devices with the lithographic template. The lithographic template (10) is formed having a substrate (12), a transparent conductive layer (16) formed on a surface (14) of the substrate (12) by low pressure sputtering to a thickness that allows for preferably 90% transmission of ultraviolet light therethrough, and a patterning layer (20) formed on a surface (18) of the transparent conductive layer (16).
    Type: Application
    Filed: August 15, 2002
    Publication date: February 19, 2004
    Inventors: Albert Alec Talin, Jeffrey H. Baker, William J. Dauksher, Andy Hooper, Douglas J. Resnick
  • Patent number: 6685805
    Abstract: In a method of manufacturing a substrate having a transparent conductive film in which sputtering is carried out on a transparent insulating substrate using an indium oxide/tin oxide target under an atmosphere of a mixed gas containing argon and oxygen, when the ratio of oxygen to argon in the mixed gas is in a suitable range of 0.016 to 0.018, the carrier density of the transparent conductive film becomes a maximum, while the mobility rises progressively as the ratio of oxygen to argon increases. The surface resistance of the transparent conductive film, that is the reciprocal of the product of the carrier density and the mobility, 1/(carrier density×mobility), takes a minimum value when the ratio of oxygen to argon is in the above suitable range. In this case, crystallization of the film is promoted and the percentage change between the surface resistance of the film before heat treatment and the surface resistance of the film after heat treatment can be kept down to within ±10%.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: February 3, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shogo Kiyota, Yukihiro Katoh
  • Patent number: 6679977
    Abstract: A method for producing flat panels for TFT or plasma display applications includes forming a sputter source within a sputter coating chamber, the source having at least two electrically mutually isolated stationery bar-shaped target arrangements. A controlled magnet arrangement provided under each target with a time-varying magnetron field.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: January 20, 2004
    Assignee: Unakis Trading AG
    Inventors: Walter Haag, Pius Grunenfelder, Urs Schwendener, Markus Schlegel, Siegfried Krassnitzer
  • Patent number: 6660931
    Abstract: A substrate for a solar cell is provided which comprises a support having a metal surface and a zinc oxide film formed on the metal surface and having a water content of 7.5×10−3 mol/cm3 or less, preferably 4.0×10−4 mol/cm3 or more. Thereby, the increase of series resistance and the generation of shunt are prevented and the efficiency such as Jsc and the chemical stability are improved, thus obtaining a solar cell with a zinc oxide film having optimal overall characteristics.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: December 9, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Noboru Toyama, Yuichi Sonoda, Yusuke Miyamoto
  • Publication number: 20030213967
    Abstract: A multicolor organic light emitting device employs vertically stacked layers of double heterostructure devices which are fabricated from organic compounds. The vertical stacked structure is formed on a glass base having a transparent coating of ITO or similar metal to provide a substrate. Deposited on the substrate is the vertical stacked arrangement of three double heterostructure devices, each fabricated from a suitable organic material. Stacking is implemented such that the double heterostructure with the longest wavelength is on the top of the stack. This constitutes the device emitting red light on the top with the device having the shortest wavelength, namely, the device emitting blue light, on the bottom of the stack. Located between the red and blue device structures is the green device structure.
    Type: Application
    Filed: June 11, 2003
    Publication date: November 20, 2003
    Inventors: Stephen R. Forrest, Mark E. Thompson, Paul E. Burrows, Vladimir Bulovic, Gong Gu
  • Publication number: 20030201164
    Abstract: The invention disclosed is a process for fabrication of IR-transparent electrically conductive metal oxide, such as copper aluminum oxide (CuAlxOy), by reactive magnetron co-sputtering from high purity metal targets, such as Cu and Al targets, in an argon/oxygen g as mixture. A preferred embodiment of the present invention is a process for making a metal oxide film having electrical conductivity and infrared transparency. Preferably, the substrate is placed in an environment having argon and oxygen. The process comprises applying between about 0.15 to 10.0% oxygen partial pressure to a substrate and DC-sputter depositing a first layer of conductive metal ions onto the substrate. The first layer has a physical thickness of from about 13 to 20 angstroms. Next, Co-sputter depositing a second layer of infrared transparent delafossite metal oxide onto the first layer with the second layer having a physical thickness of from about 1500 to 5000 angstroms, thereby forming a layer pair.
    Type: Application
    Filed: April 29, 2002
    Publication date: October 30, 2003
    Inventors: Linda F. Johnson, Mark B. Moran
  • Publication number: 20030201165
    Abstract: A method of film deposition is disclosed, which eliminates the conventional problem that a coating film having a component concentration gradient in the thickness direction and thus having a boundary with a compositional gradient or a coating film in which two or more components coexist as a mixture thereof cannot be stably obtained by sputtering. In the method, two planar cathodes are closely arranged as a pair, and a voltage is applied thereto while alternately inverting the polarities thereof so that when a target A bonded to one of the cathodes is used as a negative electrode, then a target B bonded to the other cathode and differing to the target A in component is used as a positive electrode. The targets A and B are simultaneously bombarded with positive ions while passing a substrate in front of the targets so as to cross the cathodes.
    Type: Application
    Filed: April 2, 2003
    Publication date: October 30, 2003
    Applicant: NIPPON SHEET GLASS CO., LTD.
    Inventors: Toshiaki Anzaki, Etsuo Ogino, Takayuki Toyoshima
  • Publication number: 20030198808
    Abstract: The present invention provides a heat shading glass including a glass sheet and a heat shading film formed on the glass sheet. The heat shading film comprises a first metal oxide film, a first Ag film, a second metal oxide film, a second Ag film, and a third metal oxide film, layered in that order on the glass sheet. The oxide films include indium oxide containing tin oxide. An X-ray diffraction chart of the heat shading film shows a diffraction peak of the indium oxide as well as a diffraction peak of the Ag. Thus, as a heat shading laminated glass, it can be used as window glass for buildings or vehicles, has superior visible light transmittance, reflects infrared radiation, has colorless transmission color and reflection color, and has superior durability.
    Type: Application
    Filed: December 5, 2000
    Publication date: October 23, 2003
    Inventors: Takashi Muromachi, Tatsuya Noguchi, Terufusa Kunisada
  • Publication number: 20030164290
    Abstract: A method of forming an indium tin oxide (ITO) layer on a heat-sensitive substrate. An amorphous ITO layer is formed on the substrate by a sputtering process, wherein the temperature of the sputtering process is controlled at room temperature and, in situ, hydrogen gas with a flow rate of 1˜5 sccm is introduced in the sputtering process. Part of the amorphous ITO layer is removed by an oxalic acid solution to form an amorphous ITO pattern on the substrate. A heat treatment whose temperature is below 150° C. is performed to turn the amorphous ITO pattern into a crystalline ITO layer. Thus, a crystalline and flat ITO layer can be formed on the heat-sensitive substrate.
    Type: Application
    Filed: November 22, 2002
    Publication date: September 4, 2003
    Inventors: Chi-Lin Chen, Tsung-Neng Liao
  • Publication number: 20030150714
    Abstract: A method of manufacturing a display device having two components, an OLED display formed on a film on one side of a substrate and a touch screen formed on a film on the other side of the substrate, the OLED display including components that are sensitive to high temperatures, includes the steps of: partially forming one of the components on one side of the substrate; applying a protector over the partially constructed component; forming the other component of the display device on the other side of the substrate; removing the protector; and completing the formation of the one component on the one side of the substrate.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Applicant: Eastman Kodak Company
    Inventors: Andre D. Cropper, Ronald S. Cok, Rodney Feldman
  • Patent number: 6596135
    Abstract: A sputtering target which comprises an oxide containing Zn, Al and Y, which can be used for a DC sputtering method, and with which a transparent conductive film having a resistivity of from 10−2 to 1010 &OHgr;·cm can be produced stably, and a transparent conductive film which comprises an oxide containing Zn, Al and Y, and which has a resistivity of from 10−2 to 1010 &OHgr;·cm and a low light absorptivity.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: July 22, 2003
    Assignee: Asahi Glass Company, Limited
    Inventor: Akira Mitsui
  • Patent number: 6596134
    Abstract: A multicolor organic light emitting device employs vertically stacked layers of double heterostructure devices which are fabricated from organic compounds. The vertical stacked structure is formed on a glass base having a transparent coating of ITO or similar metal to provide a substrate. Deposited on the substrate is the vertical stacked arrangement of three double heterostructure devices, each fabricated from a suitable organic material. Stacking is implemented such that the double heterostructure with the longest wavelength is on the top of the stack. This constitutes the device emitting red light on the top with the device having the shortest wavelength, namely, the device emitting blue light, on the bottom of the stack. Located between the red and blue device structures is the green device structure.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: July 22, 2003
    Assignee: The Trustees of Princeton University
    Inventors: Stephen R. Forrest, Mark E. Thompson, Paul E. Burrows, Vladimir Bulovic, Gong Gu
  • Patent number: 6572940
    Abstract: A glass sheet includes a coating comprising at least one silver layer and inner and outer antireflection layers. The glass sheet is formed by a magnetron sputtering process. The inner antireflection layer is a multiple layer comprising a layer of a titanium oxide applied by medium frequency magnetron sputtering and a layer of a metal oxide between the titanium oxide layer and a silver layer.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: June 3, 2003
    Assignee: Flachglas Aktiengesellschaft
    Inventors: Axel Noethe, Michael Rissmann, Thomas Paul
  • Publication number: 20030085116
    Abstract: There are provided techniques of forming a back reflecting layer with constant characteristics throughout long-term film formation and forming a metal oxide film so as to be able to maintain a current of a bottom cell and thereby keep a short-circuit current Jsc of a solar cell constant over a long period of time. A sputtering method is a method of forming a stack of a metal film and a metal oxide film, comprising the step 1 of forming a metal layer on a substrate, the step 2 of bringing a surface of the metal layer into contact with active oxygen, and the step 3 of forming a metal oxide film thereon after the step 2, wherein in the step 2 an amount of active oxygen at a first substrate position is different from that at a second substrate position.
    Type: Application
    Filed: June 28, 2002
    Publication date: May 8, 2003
    Inventors: Hiroshi Echizen, Yasuyoshi Takai, Akiya Nakayama
  • Patent number: 6559593
    Abstract: A method of sputter deposition onto an organic material, wherein the discharge gas of the sputtering operation is a gas having a spectrum of light emission of a lower energy than that of argon.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: May 6, 2003
    Assignee: Cambridge Display Technology Limited
    Inventors: Stephen Karl Heeks, Julian Charles Carter
  • Patent number: 6554973
    Abstract: In a film formation method comprising introducing a sputtering gas into a film forming chamber and forming a film on a substrate therein, the partial pressure of H2O in an atmosphere inside the film forming chamber is controlled so as to satisfy prescribed conditions, thereby forming a reflective layer of a prescribed reflectance on the substrate, thereby providing a film formation method using sputtering and a production method of a photovoltaic element using the film formation method that attain stable good film formation even during long-time sputter film formation, can constantly form a reflective film with a desired reflectance, has excellent workability and durability, and constantly attain high photoelectric conversion efficiency.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: April 29, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akiya Nakayama
  • Patent number: 6555233
    Abstract: In a sputtering process of forming a transparent electrode film (13) on a color filter (14), the dielectric breakdown of a peripheral portion of the color pattern film (10) due to abnormal discharge is prevented. A metal mask (8) has a mask body (8b) provided with openings (8a) having a shape corresponding to that of the color pattern films (10) formed on a glass substrate (9) Stepped portions (8d) are formed by recessing brim portions (8c) of the openings (8a) facing the color filters (14). Gaps (11) are formed between the mask body (8b) and peripheral portions of the color pattern films (10) of the color filters (14). The mask body (8b) is provided on the stepped portions (8d) with conductive projections (12). The conductive projections (12) come into electrical contact with black shading strips (10b) formed in the peripheral portions of the color pattern films (10) of the color filters (14).
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: April 29, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Akira Shishido, Atsutoshi Yamada
  • Patent number: 6528442
    Abstract: To provide an optically transparent film containing 0.01 to 20% by weight glass forming oxide consisting of Nb2O5, V2O5, B2O3, SiO2, and P2O6; 0.01 to 20% by weight Al2O3 or Ga2O3; and 0.01 to 5% by weight hard oxide of ZrO2 and TiO2 as required; balance being ZnO, and a sputtering target for forming such a film. This sputtering target reduces occurrence of particles during sputtering, decreases the number of interruption or discontinuance of sputtering to improve production efficiency, and forms a protective film for optical disks with large transmittance and low reflectance.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: March 4, 2003
    Assignee: Nikko Materials Company, Limited
    Inventors: Katsuo Kuwano, Hideo Takami
  • Patent number: 6495000
    Abstract: A system and method have been provided for an improved oxide deposition process using a DC sputtering magnetron. The invention prolongs the useful life of the anode by providing shielded electron collection surfaces, to minimize the deposition of insulator material on the anode. Specifically, the anode has a fin with a bottom electron collection surface that is shielded from the target material deposition. A small electro-magnet helps deflect the flow of electrons to the bottom surface of the fin. Vias in the fin promote the flow of electrons to the fin top surface, which is also shielded from the deposition material, even if deposition material begins to accumulate on the fin bottom surface.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: December 17, 2002
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: James Mikel Atkinson, Hirohiko Nishiki, Patrick L. Guthrie
  • Patent number: 6478932
    Abstract: A combination process of vacuum sputtering and wet coating produces a high conductivity and light attenuation anti-reflection coating on a substrate of a CRT surface. The coating includes five layers by vacuum sputtering and one layer on top of the coating by conventional wet process. The layers produced by vacuum sputtering provides high anti-reflection, low resistivity, and light-attenuation effect. The layer produced by wet process provides fingerprint proof effect.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: November 12, 2002
    Assignee: Applied Vacuum Coating Technologies Co., Ltd.
    Inventors: Jau-Jier Chu, Jau-Sung Lee, Cheng-Chen Shih, Shao-Chi Chang
  • Patent number: 6475354
    Abstract: This invention relates to a deposited film producing process that enables reduction of the time for adjusting the conditions for film formation, and brings about an improvement in the reproducibility of film thickness and film quality of the deposited film formed. This process comprises the steps of, in the state where a substrate is set in a film-forming chamber, introducing a sputtering gas containing no reactive gas into the film-forming chamber and causing discharge therein, adjusting the sensitivity of a device for monitoring emission intensity of plasma of the discharge, in such a way that the device reads a set value, and introducing at least a reactive gas into the film-forming chamber to deposit a film on the substrate by subjecting a target to sputtering while controlling the feed rate of the reactive gas in such way as to provide a constant deposition rate.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 5, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noboru Toyama
  • Publication number: 20020157703
    Abstract: In a process for forming on a substrate a transparent conductive film having crystallizability, the process comprises a first step of forming a film at a first film formation rate and a second step of forming a film at a second film formation rate, and the relationship between film formation rates in the respective steps satisfies:
    Type: Application
    Filed: January 31, 2002
    Publication date: October 31, 2002
    Inventors: Akiya Nakayama, Hiroshi Echizen, Yasuyoshi Takai, Naoto Okada, Shigeo Kiso
  • Publication number: 20020160236
    Abstract: There are provided:
    Type: Application
    Filed: March 22, 2002
    Publication date: October 31, 2002
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takeshi Hattori, Kunio Saegusa, Yozo Shigesato
  • Publication number: 20020153243
    Abstract: A multicolor organic light emitting device employs vertically stacked layers of double heterostructure devices which are fabricated from organic compounds. The vertical stacked structure is formed on a glass base having a transparent coating of ITO or similar metal to provide a substrate. Deposited on the substrate is the vertical stacked arrangement of three double heterostructure devices, each fabricated from a suitable organic material. Stacking is implemented such that the double heterostructure with the longest wavelength is on the top of the stack. This constitutes the device emitting red light on the top with the device having the shortest wavelength, namely, the device emitting blue light, on the bottom of the stack. Located between the red and blue device structures is the green device structure.
    Type: Application
    Filed: December 21, 1999
    Publication date: October 24, 2002
    Inventors: STEPHEN R FORREST, MARK E THOMPSON, PAUL E BURROWS, VLADIMIR BULOVIC, GONG GU
  • Patent number: 6468403
    Abstract: A method for producing a transparent conductive film composed mainly of an oxide by sputtering using a sputtering target capable of forming a transparent conductive film, wherein intermittent electric power is supplied to the target.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: October 22, 2002
    Assignee: Asahi Glass Company Ltd.
    Inventors: Junichi Shimizu, Shujiro Watanabe, Satoru Takaki, Hisashi Osaki, Takuji Oyama, Eiichi Ando
  • Publication number: 20020144726
    Abstract: Provided is a method of forming a transparent, conductive film on a semiconductor layer formed on a substrate, by sputtering, wherein voltages are applied independently of each other to both a target and the substrate, respectively, and a bias voltage appearing in the substrate is controlled so as to form the transparent, conductive film on only a portion except for a defective region of the semiconductor layer, thereby restraining shunting of the transparent, conductive film and achieving excellent appearance thereof. Also provided are a defective region compensation method of a semiconductor layer, a photovoltaic element, and a method of producing the photovoltaic element.
    Type: Application
    Filed: January 30, 2002
    Publication date: October 10, 2002
    Inventors: Toshihiro Yamashita, Yasuyoshi Takai, Hiroshi Izawa
  • Publication number: 20020127353
    Abstract: A transparent electroconductive film has a polymer film, a primary layer formed on the polymer film, and a transparent electroconductive thin film or a multi-lamination film composed of at least one metal-compound layer and at least one electroconductive-metal layer, formed on the primary layer. The primary layer is made of silicon compound. The primary layer is formed by sputtering, using a target having a density of 2.9 g/cm3 or more.
    Type: Application
    Filed: November 21, 2001
    Publication date: September 12, 2002
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Masato Yoshikawa, Yoshinori Iwabuchi, Yukihiro Kusano, Mitsuhiro Nishida
  • Publication number: 20020114901
    Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.
    Type: Application
    Filed: September 17, 2001
    Publication date: August 22, 2002
    Inventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
  • Patent number: 6425990
    Abstract: A method capable of fabricating a transparent conductive ITO film with a resistivity within a predetermined range until the end of the life of the target when transparent conductive ITO films are continuously formed on a plurality of substrates by continuous sputtering, and capable of fabricating a transparent conductive ITO film with a resistivity of within a predetermined range even when the film becomes thicker in forming it on a single substrate.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: July 30, 2002
    Assignee: Anelva Corporation
    Inventor: Keizi Ishibashi
  • Patent number: 6395149
    Abstract: The present invention provides a method of making electrically conductive light colored coated particles that are particularly useful for the manufacture of static dissipative compositions. The coated particles are useful for making static dissipative composites.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: May 28, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Charlotte M. Palmgren
  • Patent number: 6383345
    Abstract: A method for forming an indium tin oxide thin film on a substrate in the present invention includes the steps of introducing a mixture of an inert gas and a low electron affinity element in close proximity to a target as a primary sputter ion beam source, providing an oxygen gas between the target and the substrate, applying an electrical energy to the target to ionize the mixture, confining electrons generated in the ionization in close proximity to a surface of the target facing towards the substrate, disintegrating negatively charged ions from the target, and forming the indium tin oxide thin film on the substrate.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: May 7, 2002
    Assignee: Plasmion Corporation
    Inventors: Steven Kim, Daeil Kim
  • Patent number: 6379508
    Abstract: A method for forming a thin film of the present invention includes the steps of performing sequentially first idling discharge under application of a first level of discharge power upon gas introduction (period t1a), intermediate idling discharge under application of a second level of discharge power lower than the first level (period t1b), and second idling discharge at the first level of discharge power (period t1c), so that the pressure of sputtering gas and an intermediate product produced during the idling discharge are stabilized. The discharge power is lowered to the second level, the shutter is opened, and an ITO thin film, for example, is formed on a first substrate (t2). Thereafter, the same cycles are repeated to form ITO thin films on substrates.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: April 30, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazunori Kobayashi, Tomoaki Ishihara, Akira Nakamura, Toshihide Nobusada
  • Patent number: 6379509
    Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: April 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Yi Zhu Chu, Linda S. Heath, William K. Smyth