Patents by Inventor Eiichi Kitazume

Eiichi Kitazume 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).

  • Patent number: 8772762
    Abstract: Provided is an organic electroluminescent device including: a substrate (11, 101); a first electrode (12, 102) formed on the substrate (11, 101) and including a pixel region; a partition wall (23, 203) formed on the substrate (11, 101), partitioning the first electrode (12, 102), and including a surface with a recessed and projected form; a luminescent medium layer (19, 109) formed on the pixel region and the partition wall (23, 203), a film thickness of the partition wall (23, 203) being uneven according to the recessed and projected form; and a second electrode (17, 107) formed on the luminescent medium layer (19, 109).
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 8, 2014
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Shingo Kaneta, Yuki Yasu, Ryo Syoda, Noriko Morikawa, Eiichi Kitazume
  • Patent number: 8324806
    Abstract: One embodiment of the present invention is an organic EL element, including a substrate, a first electrode having a pixel region, the first electrode formed on the substrate, a multi-step partition wall, including a first partition wall formed on the substrate, the first partition wall sectioning the first substrate and having an inverse tapered shape, and a second partition wall formed on the first partition wall, the second partition wall having a bottom part which is narrower than a top part of the first partition wall, a light emitting medium layer, including a first light emitting medium layer formed on the pixel region, the first partition wall and the second partition wall, the first light emitting medium layer made of an inorganic material, and an organic light emitting layer on the first light emitting medium layer, and a second electrode formed on the light emitting medium layer, wherein the first light emitting medium layer is formed on the first electrode and the multi-layer partition wall.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: December 4, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Shingo Kaneta, Ryo Shoda, Eiichi Kitazume
  • Publication number: 20120187389
    Abstract: It is possible to obtain a display panel that can maintain efficiency while preventing defects caused by foreign substances in such a way that, after a hole injection layer formed so as to cover projections or foreign substances on electrodes is formed before partitioning pixels with barrier ribs, the barrier ribs are formed, and then a thin film is formed on the hole injection layer so that efficiency is not lowered by leaked current.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 26, 2012
    Inventors: Ryo Shoda, Eiichi Kitazume
  • Patent number: 8222808
    Abstract: In accordance with an aspect of the present invention, an organic electroluminescence element includes a first electrode on a substrate, a second electrode which faces the first electrode, a luminescent medium layer which is between the first electrode and the second electrode and includes an organic luminescent layer and a carrier injection layer between the first electrode and the organic luminescent layer, a first carrier injection layer formed on the first electrode, a partition wall formed so as to section the first electrode and cover a part of the first carrier injection layer, and a second carrier injection layer formed on the partition wall and the first carrier injection layer which is not covered by the partition wall.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: July 17, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Eiichi Kitazume, Ryo Shoda
  • Patent number: 8183764
    Abstract: One embodiment of the present invention is an organic electroluminescent element including a substrate, a first electrode arranged on said substrate, a luminescent medium layer including at least an organic luminescent layer and a molybdenum oxide layer arranged on the first electrode, a second electrode facing the first electrode, the luminescent medium layer sandwiched between the electrodes and the molybdenum oxide layer including at least molybdic anhydride and one or more other inorganic compounds.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: May 22, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Ryo Shoda, Yuko Abe, Eiichi Kitazume
  • Patent number: 8124185
    Abstract: A method for manufacturing an organic functional layer includes the steps of: forming a coated film of an organic functional material by applying a coating liquid to a substrate by a printing method, the coating liquid including an organic functional material dissolved or dispersed in a first organic solvent; and bringing the coated film into contact with vapor or liquid of a second organic solvent, the second organic solvent having the following properties: chemically non-active; the second organic solvent can be mixed with the first solvent; the second organic solvent can not substantially dissolve the organic functional material; and a vapor pressure of the second organic solvent is higher than that of the first organic solvent at a room temperature.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: February 28, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hajime Yokoi, Yuko Abe, Ryo Shoda, Eiichi Kitazume
  • Patent number: 8098006
    Abstract: One embodiment of the present invention is a color EL display characterized in that at least color filters, a thin film transistor circuit, an organic EL layer, and a common electrode are laminated in this order on a transparent substrate. Another embodiment of the invention is a method for producing a color EL display comprising the steps of forming color filters on a transparent substrate; forming a thin film transistor circuit; forming an organic EL layer; and forming a common electrode, wherein a process temperatures of the steps of forming the thin film transistor circuit and subsequent steps are 200° C. or less.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: January 17, 2012
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Mamoru Ishizaki, Norimasa Sekine, Manabu Ito, Eiichi Kitazume
  • Publication number: 20120007067
    Abstract: Provided is an organic electroluminescent device including: a substrate (11, 101); a first electrode (12, 102) formed on the substrate (11, 101) and including a pixel region; a partition wall (23, 203) formed on the substrate (11, 101), partitioning the first electrode (12, 102), and including a surface with a recessed and projected form; a luminescent medium layer (19, 109) formed on the pixel region and the partition wall (23, 203), a film thickness of the partition wall (23, 203) being uneven according to the recessed and projected form; and a second electrode (17, 107) formed on the luminescent medium layer (19, 109).
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Shingo Kaneta, Yuki Yasu, Ryo Syoda, Noriko Morikawa, Eiichi Kitazume
  • Patent number: 8040056
    Abstract: An embodiment of the present invention is an organic EL display panel including a plurality of first electrodes, a confining wall which covers an edge part of the first electrode and sections the plurality of first electrodes into different pixels, a luminescent medium layer which has a plurality of layers including a luminescent layer and a second electrode formed on the luminescent medium layer, and an organic EL display panel also includes at least two layers which are included in the luminescent medium layer and which are formed into a stripe shape and are perpendicular to each other.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: October 18, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yuko Abe, Eiichi Kitazume, Koji Takeshita
  • Publication number: 20110241027
    Abstract: One embodiment of the present invention is an organic EL element, including a substrate, a first electrode having a pixel region, the first electrode formed on the substrate, a multi-step partition wall, including a first partition wall formed on the substrate, the first partition wall sectioning the first substrate and having an inverse tapered shape, and a second partition wall formed on the first partition wall, the second partition wall having a bottom part which is narrower than a top part of the first partition wall, a light emitting medium layer, including a first light emitting medium layer formed on the pixel region, the first partition wall and the second partition wall, the first light emitting medium layer made of an inorganic material, and an organic light emitting layer on the first light emitting medium layer, and a second electrode formed on the light emitting medium layer, wherein the first light emitting medium layer is formed on the first electrode and the multi-layer partition wall.
    Type: Application
    Filed: March 29, 2011
    Publication date: October 6, 2011
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Shingo Kaneta, Ryo Shoda, Eiichi Kitazume
  • Patent number: 8021202
    Abstract: One embodiment of the present invention is a method for manufacturing an organic EL display panel in which a substrate which has a pixel electrode, a partition wall, a sub pixel which has a short side and a long side sectioned by the partition wall and a pixel including a plurality of the sub pixels are prepared and a first organic layer is formed and printed so as to form a stripe shape in the short side direction of the sub pixel and a second organic layer as a luminescent layer is formed on the sub pixel.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: September 20, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Koji Takeshita, Takahisa Shimizu, Syohei Kimura, Eiichi Kitazume
  • Patent number: 8002601
    Abstract: An organic electroluminescent device is disclosed. The device can include a substrate, a first electrode on the substrate, a partition wall next to the first electrode, an organic luminescence media layer including an organic luminous layer on the first electrode, and a second electrode which is on the organic luminescence media layer and facing the first electrodes, wherein the partition wall comprises a first partition wall and a second partition wall, the first partition wall covers a part of the first electrode, and the second partition wall is located on an inner side of the first partition wall.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: August 23, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventor: Eiichi Kitazume
  • Patent number: 7977866
    Abstract: According to the present invention a method of manufacturing an organic electroluminescence element and a display device is provided, wherein the method includes forming an organic light emitting medium layer inside a pixel sectioned by a partition wall, wherein an out gas from a partition wall is small, thereby damage to an organic light emitting medium layer is controlled, and wherein, in an organic electroluminescence element, there is no defect and no unevenness because a uniform film is formed without ink-repellent phenomenon on an organic light emitting medium layer.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: July 12, 2011
    Assignee: Toppan Printing Co., Ltd
    Inventors: Ryo Shoda, Eiichi Kitazume, Hajime Yokoi, Koji Murata, Yuko Abe
  • Patent number: 7915824
    Abstract: An organic EL display device includes a substrate, a plurality of first electrodes formed on the substrate, a plurality of partition walls for sectioning the first electrodes and for locating the first electrodes in different pixels, a hole transport layer including an inorganic layer, the hole transport layer formed on the first electrode, an organic light emitting layer formed on the hole transport layer, and a second electrode covering an entire surface of the hole transport layer with the organic light emitting layer.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: March 29, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventor: Eiichi Kitazume
  • Patent number: 7872413
    Abstract: One embodiment of the present invention is an organic electroluminescence element including an anode which is a hole injection electrode; a cathode which is an electron injection electrode, the cathode facing the anode; an organic light emitting layer between the anode and the cathode, the organic light emitting layer including a molybdenum oxide layer, the molybdenum oxide layer including a crystal molybdenum oxide and an amorphous molybdenum oxide, and the crystal molybdenum oxide and the amorphous molybdenum oxide being mixed or stacked.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: January 18, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Ryo Shoda, Eiichi Kitazume, Shingo Kaneta
  • Publication number: 20100308717
    Abstract: In accordance with an aspect of the present invention, an organic electroluminescence element includes a first electrode on a substrate, a second electrode which faces the first electrode, a luminescent medium layer which is between the first electrode and the second electrode and includes an organic luminescent layer and a carrier injection layer between the first electrode and the organic luminescent layer, a first carrier injection layer formed on the first electrode, a partition wall formed so as to section the first electrode and cover a part of the first carrier injection layer, and a second carrier injection layer formed on the partition wall and the first carrier injection layer which is not covered by the partition wall.
    Type: Application
    Filed: June 3, 2010
    Publication date: December 9, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Eiichi Kitazume, Ryo Shoda
  • Publication number: 20100136220
    Abstract: An organic electroluminescent device is disclosed. The device can include a substrate, a first electrode on the substrate, a partition wall next to the first electrode, an organic luminescence media layer including an organic luminous layer on the first electrode, and a second electrode which is on the organic luminescence media layer and facing the first electrodes, wherein the partition wall comprises a first partition wall and a second partition wall, the first partition wall covers a part of the first electrode, and the second partition wall is located on an inner side of the first partition wall.
    Type: Application
    Filed: February 2, 2010
    Publication date: June 3, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventor: Eiichi Kitazume
  • Patent number: 7723916
    Abstract: One embodiment of the present invention is an organic electroluminescence element, including: an anode; a cathode; an organic light emitting medium layer including a buffer layer and an organic light emitting layer, the organic light emitting medium layer being between the anode and the cathode, and the buffer layer comprising at least two kinds of inorganic material.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: May 25, 2010
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yuko Abe, Eiichi Kitazume
  • Patent number: 7719183
    Abstract: One embodiment of the present invention is a manufacturing method of an organic electroluminescent device, the method including: forming a first electrode on a substrate; forming an organic luminescence media layer over the first electrode which emits light by applying a voltage wherein the organic luminescence media layer includes a hole transport layer and an organic luminous layer; and forming a second electrode on the organic luminescence media layer, wherein the method further includes: forming the hole transport layer by applying a polymeric hole transport material, and further forming the organic luminous layer on the hole transport layer by applying an ink including 0.3% by weight 3% by weight of a low molecular organic luminous material having a molecular weight less than or equal to 5000 Daltons.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: May 18, 2010
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Takao Taguchi, Eiichi Kitazume, Akiko Uchibori
  • Publication number: 20100078630
    Abstract: In an organic electroluminescent element of the present invention, which has at least a hole transport layer having an inorganic compound and an organic luminescent layer between a first electrode and a second electrode on a substrate, a high light extraction efficiency can be obtained by reflecting light emitted from the organic luminescent layer off the hole transport layer.
    Type: Application
    Filed: September 18, 2009
    Publication date: April 1, 2010
    Applicant: Toppan Printing Co.,Ltd.
    Inventors: Shingo Kaneta, Ryo Shoda, Eiichi Kitazume