Patents by Inventor Etsuko Nishimura
Etsuko Nishimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080303406Abstract: The present invention provides an image display device which can lower the resistance of scanning signal lines, can ensure the enhancement of reliability of supply of electricity and conductivity and the reliability of separation of elements, can exhibit excellent display characteristic, and can possess an extremely prolonged lifetime. The scanning signal line has the stacked film structure constituted of a lower layer film formed of an aluminum film and an upper layer film formed of an aluminum alloy film containing aluminum as a main component.Type: ApplicationFiled: April 23, 2008Publication date: December 11, 2008Inventors: Hiroyasu YANASE, Etsuko Nishimura, Toshiaki Kusunoki, Tomoki Nakamura
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Publication number: 20080272685Abstract: Hillock is prevented when aluminum wiring is used in order to reduce line resistance in a display unit. The aluminum wiring is formed into multi-layer structure and each layer contains an element which is not solidly solubilized with aluminum. The element are preferably rare earth metal such as Nd, high-melting point transition metals such as Ta and noble metals such as Pd. Intermetallic compounds of aluminum and the element are educed at an interface of the multi-layer wiring and it is prevented that grains of aluminum are enlarged to form hillock.Type: ApplicationFiled: April 21, 2008Publication date: November 6, 2008Inventors: Mitsuharu Ikeda, Toshiaki Kusunoki, Etsuko Nishimura, Tatsumi Hirano, Masatomo Terakado, Takahiro Ueno, Hiroyasu Yanase, Yukio Takasaki, Takaaki Ogasa, Hideyuki Shintani
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Publication number: 20080246387Abstract: The present invention aims to form an electron emission film containing an alkali metal compound or the like without causing alkali attack on the metal wiring. An FED display device comprises: an electron source including an electron emission film 13 on the surface thereof; and metal wirings 17, 18 and the like for supplying a signal or the like to the electron source. After forming on the surface of the metal wiring 18 an corrosion resistant film 21 comprising a reactive film or adsorption film with phosphorus, an alkali metal or the like is coated onto or added into the electron emission film 13. The addition of phosphorus is made fewer than the chemical equivalent of the alkali metal salt. Such configuration can improve the electron emission efficiency of the electron source without the metal wiring being corroded by alkali metal or the like.Type: ApplicationFiled: April 4, 2008Publication date: October 9, 2008Inventors: Toshiaki Kusunoki, Mitsuharu Ikeda, Katsuhide Aoto, Tomoki Nakamura, Yoshiro Mikami, Etsuko Nishimura, Takahiro Ueno, Mitsuaki Shiba
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Publication number: 20080030132Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.Type: ApplicationFiled: September 7, 2007Publication date: February 7, 2008Applicant: HITACHI DISPLAYS, LTD.Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
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Publication number: 20080001544Abstract: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. Two kinds of the OLEDs are provided. One is an OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Another comprises a region of the LE layer formed on an electrode of capacitor connected to the TFTs to control the light-emitting element. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.Type: ApplicationFiled: March 29, 2007Publication date: January 3, 2008Applicant: HITACHI DISPLAYS, LTD.Inventors: Hajime MURAKAMI, Yoshiro MIKAMI, Etsuko NISHIMURA, Shingo ISHIHARA, Masao SHIMIZU, Kenichi ONISAWA
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Patent number: 7279833Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.Type: GrantFiled: February 23, 2006Date of Patent: October 9, 2007Assignee: Hitachi Displays, Ltd.Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
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Publication number: 20070216279Abstract: It is an object of the present invention to provide an image display using a thin film electronic source having a structure for separating picture elements in a self-alignment manner. The structure of bus wiring (scanning line) for powering the electronic source is formed by a stacked structure including a lower layer 17 made of an alloy of CrMo, an intermediate layer 18 made of Al or an alloy of Al, and an upper layer 19 made of Cr, from a cathode substrate 10. The CrMo alloy in the lower layer 17 includes 30 wt % or more of Mo. Such a stacked structure can be used to process one side of the lower layer 17 to form an undercut relative to the intermediate layer 18. The undercut serves as a picture element separating structure in sputtering of an upper electrode 13 of the electronic source and achieves picture element separation in a self-alignment manner.Type: ApplicationFiled: January 25, 2007Publication date: September 20, 2007Inventors: Naohiro Horiuchi, Takuya Takahashi, Takaaki Suzuki, Etsuko Nishimura, Toshiaki Kusunoki
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Publication number: 20070216283Abstract: A simple method was needed for dividing up the electron emitter electrodes into individual supply electrodes. An insulator partition wall was formed on the same layer and parallel to the supply electrode for supplying power to the electron emitter electrode, an electron emitter electrodes formed across the entire surface of the image display area, a side surface of the partition wall was sliced, condensation and solubility diffusion performed by heat treatment, ablation performed by irradiating the upper surface of the silicon partition wall with a laser, Joule thermal sealing/cutting performed by conducting electricity across the scanning lines enclosing the silicon partition wall in order to slice the electron emitter electrode.Type: ApplicationFiled: January 23, 2007Publication date: September 20, 2007Inventors: Toshiaki Kusunoki, Etsuko Nishimura, Masakazu Sagawa, Kazutaka Tsuji, Mitsuharu Ikeda
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Publication number: 20070148464Abstract: Although sintered wire with lower resistance was preferable as a scan line and a signal line in conventional art in order to make a voltage drop small, there was a problem in electric connection with an electrode which constructs a cathode. In the present invention, a cathode which has an electron-emitting region 16 on a substrate 10 is constructed of a base electrode 11, a top electrode 13, and a protective insulating film 14 sandwiched by these electrodes, the base electrode 11 becomes a signal line, and sintered wire 18, used as a scan line, and the top electrode 13 are connected with an sub-electrode 17. The sub-electrode 17 includes metal included in the sintered wire 18, and metal included in the top electrode 13.Type: ApplicationFiled: December 19, 2006Publication date: June 28, 2007Inventors: Etsuko Nishimura, Takuya Takahashi, Takaaki Suzuki, Toshiaki Kusunoki, Masakazu Sagawa, Naohiro Horiuchi, Nobuhiko Fukuoka, Nobuyuki Ushifusa
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Patent number: 7211949Abstract: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. Two kinds of the OLEDs are provided. One is an OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Another comprises a region of the LE layer formed on an electrode of capacitor connected to the TFTs to control the light-emitting element. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.Type: GrantFiled: May 23, 2006Date of Patent: May 1, 2007Assignee: Hitachi Displays, Ltd.Inventors: Hajime Murakami, Yoshiro Mikami, Etsuko Nishimura, Shingo Ishihara, Masao Shimizu, Kenichi Onisawa
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Publication number: 20070082129Abstract: A DLC film that has a low friction coefficient and that is superior in adhesion and wear resistance, and a method for forming the film are provided. A slide member having a protective film that has a low friction coefficient and that is superior in wear resistance and adhesion, and a method for forming the member are provided. Without using a solid carbon target, a metal composite diamond-like carbon (DLC) film is formed on a base material by introducing hydrocarbon gas as a metal target alone is sublimated by arc discharge and ionizing the metal and the hydrocarbon.Type: ApplicationFiled: October 4, 2006Publication date: April 12, 2007Inventors: Kenji Shimoda, Kinya Kobayashi, Etsuko Nishimura
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Publication number: 20060284540Abstract: An object of the invention is to provide a thin-film cathode having a base electrode, an upper electrode and an electron accelerator disposed therebetween and made of an insulator or a semiconductor, wherein a diode current rises with a lower threshold voltage that that in the background art, so that a diode current required for electron emission can be secured with a low voltage, and to obtain an image display device long in life and low in power consumption. Platinum-group metal (Group VIII), noble metal belonging to Group Ib, or a laminated film, a mixed film or an alloy film of those materials containing an alkali metal oxide, an alkaline earth metal compound or a compound of transition metal belonging to Group III to VII from the interface with an electron accelerator to the surface is used as an upper electrode.Type: ApplicationFiled: June 15, 2006Publication date: December 21, 2006Inventors: Toshiaki Kusunoki, Masakazu Sagawa, Kazutaka Tsuji, Tatsumi Hirano, Etsuko Nishimura, Yoshiro Mikami, Yoshiyuki Kaneko, Tomoki Nakamura, Katsuhide Aoto
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Publication number: 20060220582Abstract: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. Two kinds of the OLEDs are provided. One is an OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Another comprises a region of the LE layer formed on an electrode of capacitor connected to the TFTs to control the light-emitting element. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.Type: ApplicationFiled: May 23, 2006Publication date: October 5, 2006Inventors: Hajime Murakami, Yoshiro Mikami, Etsuko Nishimura, Shingo Ishihara, Masao Shimizu, Kenichi Onisawa
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Publication number: 20060138950Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.Type: ApplicationFiled: February 23, 2006Publication date: June 29, 2006Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
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Patent number: 7067973Abstract: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. An OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.Type: GrantFiled: March 25, 2005Date of Patent: June 27, 2006Assignee: Hitachi Displays, Ltd.Inventors: Hajime Murakami, Yoshiro Mikami, Etsuko Nishimura, Shingo Ishihara, Masao Shimizu, Kenichi Onisawa
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Patent number: 7030556Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.Type: GrantFiled: September 2, 2003Date of Patent: April 18, 2006Assignee: Hitachi Displays, Ltd.Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
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Publication number: 20060066215Abstract: An upper bus electrode is formed as a laminated wire of a metal film lower layer, a metal film intermediate layer and a metal film upper layer. Al lower in electrode potential is used as a low resistance material for the metal film intermediate layer of the upper bus electrode, while Cr high in heat resistance and oxidation resistance and higher in electrode potential than Al is used for the metal film lower and upper layers disposed as upper and lower layers. Al and Cr are selectively etched so that the metal film lower layer projects on one side and has an undercut on the other side with respect to the metal film intermediate layer.Type: ApplicationFiled: September 30, 2005Publication date: March 30, 2006Inventors: Toshiaki Kusunoki, Masakazu Sagawa, Kazutaka Tsuji, Hiroshi Kikuchi, Yasushi Sano, Nobuyuki Ushifusa, Nobuhiko Fukuoka, Etsuko Nishimura, Takuya Takahashi
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Publication number: 20060057338Abstract: A substrate with plane patterns formed in a liquid process wherein the plane patterns are formed based on a combination of plane shapes by which a difference in internal pressure of a solution between any two points of the solution is small, the solution being ejected onto the substrate so as to form the plane patterns by the liquid process.Type: ApplicationFiled: September 8, 2005Publication date: March 16, 2006Inventors: Makoto Abe, Hiroki Kaneko, Takuya Takahashi, Etsuko Nishimura, Yoshitaka Tsutsui, Takaaki Suzuki
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Publication number: 20050212003Abstract: The present invention provides a top emission type organic light-emitting display device in a production of which it is possible to prevent the organic film from being oxidized when the upper transparent electrode is formed, and which is capable of emitting light at a low voltage. This organic light-emitting display device contains an organic light-emitting layer and an upper electrode and a lower electrode sandwiching the organic light-emitting layer, and is of a structure in which the emitted light is taken out from the upper electrode side, and a buffer layer mainly made of an oxide producing less oxygen by decomposition in the film-forming process than the upper electrode material is provided between the organic light-emitting layer and the upper electrode.Type: ApplicationFiled: February 10, 2005Publication date: September 29, 2005Inventors: Hajime Murakami, Masao Shimizu, Sukekazu Aratani, Etsuko Nishimura, Masahiro Tanaka
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Publication number: 20050168142Abstract: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. Two kinds of the OLEDs are provided. One is an OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Another comprises a region of the LE layer formed on an electrode of capacitor connected to the TFTs to control the light-emitting element. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.Type: ApplicationFiled: March 25, 2005Publication date: August 4, 2005Inventors: Hajime Murakami, Yoshiro Mikami, Etsuko Nishimura, Shingo Ishihara, Masao Shimizu, Kenichi Onisawa