Patents by Inventor Tatsuya Sasaoka
Tatsuya Sasaoka 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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Patent number: 7710025Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.Type: GrantFiled: March 28, 2007Date of Patent: May 4, 2010Assignee: Sony CorporationInventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
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Publication number: 20070228943Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.Type: ApplicationFiled: March 28, 2007Publication date: October 4, 2007Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
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Patent number: 7218049Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.Type: GrantFiled: April 19, 2006Date of Patent: May 15, 2007Assignee: Sony CorporationInventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
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Patent number: 7102282Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?(2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.Type: GrantFiled: November 22, 2000Date of Patent: September 5, 2006Assignee: Sony CorporationInventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
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Publication number: 20060175966Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.Type: ApplicationFiled: April 19, 2006Publication date: August 10, 2006Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
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Patent number: 6991506Abstract: An active-matrix-type display apparatus ensuring sufficient luminous intensity of display devices within a display plane and allowing improved display properties is provided. Such display apparatus having of a plurality of pixels comprises a lower electrode formed on a substrate; organic layers formed on the lower electrode; and an upper common electrode formed on the organic layers; in which a plurality of the pixels are partitioned by a rib larger in the thickness than the organic layers and having at least a conductive material layer; and the conductive material layer is electrically connected to the upper common electrode.Type: GrantFiled: December 23, 2002Date of Patent: January 31, 2006Assignee: Sony CorporationInventors: Jiro Yamada, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Yasuhiro Chiba, Takashi Hirano, Yuichi Iwase
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Patent number: 6971938Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: GrantFiled: January 20, 2004Date of Patent: December 6, 2005Assignee: Sony CorporationInventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Patent number: 6969948Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: GrantFiled: November 19, 2002Date of Patent: November 29, 2005Assignee: Sony CorporationInventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Patent number: 6969291Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.Type: GrantFiled: June 30, 2003Date of Patent: November 29, 2005Assignee: Sony CorporationInventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
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Publication number: 20040147200Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: ApplicationFiled: January 20, 2004Publication date: July 29, 2004Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Publication number: 20040090175Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.Type: ApplicationFiled: June 30, 2003Publication date: May 13, 2004Inventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
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Publication number: 20030201708Abstract: An active-matrix-type display apparatus ensuring sufficient luminous intensity of display devices within a display plane and allowing improved display properties is provided. Such display apparatus having of a plurality of pixels comprises a lower electrode formed on a substrate; organic layers formed on the lower electrode; and an upper common electrode formed on the organic layers; in which a plurality of the pixels are partitioned by a rib larger in the thickness than the organic layers and having at least a conductive material layer; and the conductive material layer is electrically connected to the upper common electrode.Type: ApplicationFiled: December 23, 2002Publication date: October 30, 2003Inventors: Jiro Yamada, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Yasuhiro Chiba, Takashi Hirano, Yuichi Iwase
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Patent number: 6614174Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the wiring through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.Type: GrantFiled: November 15, 2000Date of Patent: September 2, 2003Assignee: Sony CorporationInventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
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Publication number: 20030107314Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.Type: ApplicationFiled: November 19, 2002Publication date: June 12, 2003Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
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Publication number: 20030011301Abstract: In conventional organic EL displays, a metal cathode is formed on an organic layer through vapor deposition. In these, therefore, the cathode is of a film having tensile stress and easily peels off from the organic layer to degrade the reliability of the organic EL displays. A novel organic EL device is provided, in which a film having no internal stress or having compression stress is formed for a second electrode or for a second electrode and a protective layer, on an organic layer at least including a light-emitting layer of an organic light-emitting material. Also provided is an organic EL display including a plurality of those organic EL devices.Type: ApplicationFiled: October 15, 1999Publication date: January 16, 2003Inventors: TATSUYA SASAOKA, MITSUNOBU SEKIYA, NAOKI SANO, TETSUO NAKAYAMA, TAKASHI HIRANO, YASUHIRO CHIBA
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Patent number: 6388387Abstract: To provide an optical element in which resistance of electrodes on a scanning side is reduced, a rate of effectively utilizing light generated at organic layers is promoted and shortcircuit between anodes and cathodes is prevented, there is provided an optical element including first electrodes formed on a substrate, organic layers at least including organic light emitting materials formed on the first electrodes and second electrodes formed on the organic layers, in which the first electrodes and the second electrodes are formed to be substantially orthogonal to each other and the organic layers are formed in an island-like shape at positions at which the first electrodes and the second electrodes intersect with each other.Type: GrantFiled: November 9, 2000Date of Patent: May 14, 2002Assignee: Sony CorporationInventors: Takashi Hirano, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Tetsuo Nakayama
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Patent number: 6380673Abstract: An organic EL display that realizes low electric power consumption and display with high brightness by decreasing the resistance of the electrode on the scanning side is provided.Type: GrantFiled: September 16, 1999Date of Patent: April 30, 2002Assignee: Sony CorporationInventors: Mitsunobu Sekiya, Takashi Hirano, Tetsuo Nakayama, Naoki Sano, Tatsuya Sasaoka
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Publication number: 20020027414Abstract: An organic EL display that realizes low electric power consumption and display with high brightness by decreasing the resistance of the electrode on the scanning side is provided.Type: ApplicationFiled: September 16, 1999Publication date: March 7, 2002Inventors: MITSUNOBU SEKIYA, TAKASHI HIRANO, TETSUO NAKAYAMA, NAOKI SANO, TATSUYA SASAOKA
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Patent number: 6215250Abstract: To provide an optical element in which resistance of electrodes on a scanning side is reduced, a rate of effectively utilizing light generated at organic layers is promoted and shortcircuit between anodes and cathodes is prevented, there is provided an optical element including first electrodes formed on a substrate, organic layers at least including organic light emitting materials formed on the first electrodes and second electrodes formed on the organic layers, in which the first electrodes and the second electrodes are formed to be substantially orthogonal to each other and the organic layers are formed in an island-like shape at positions at which the first electrodes and the second electrodes intersect with each other.Type: GrantFiled: August 3, 1999Date of Patent: April 10, 2001Assignee: Sony CorporationInventors: Takashi Hirano, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Tetsuo Nakayama
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Patent number: 6120338Abstract: The present invention provides a method of manufacturing an organic EL display capable of decreasing the resistance of scanning-side electrodes, and improving the efficiency of utilization of light emitted in organic layers. In the manufacturing method, stripe first electrodes made of a transparent conductive material are formed in parallel on a transparent substrate, and then an insulation layer is formed on the transparent substrate with the apertures formed above the first electrodes. An organic film 24 composed of a film of an organic luminescent material, a second electrode material film and a protecting film is laminated in this order on the transparent substrate to cover the insulation layer, and then independent island resist patterns are formed on the protecting film.Type: GrantFiled: October 8, 1999Date of Patent: September 19, 2000Assignee: Sony CorporationInventors: Takashi Hirano, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Tetsuo Nakayama