Patents by Inventor Toshinao Yuki

Toshinao Yuki 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: 10361378
    Abstract: Provided is a practically useful organic EL element having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic EL element has a light-emitting layer and any other organic layer between an anode and a cathode opposite to each other. The light-emitting layer contains at least two host materials and at least one light-emitting dopant. At least one of the host materials is a host material selected from compounds each having one or two indolocarbazole skeletons, and at least one of the other host materials is a host material selected from carbazole compounds each substituted with a dibenzofuran or a dibenzothiophene.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: July 23, 2019
    Assignees: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Masashi Tada, Takahiro Kai, Katsuhide Noguchi, Yasuhiro Takahashi, Yuhki Terao, Taishi Tsuji, Yusuke Nakajima, Toshinao Yuki
  • Patent number: 10340460
    Abstract: Provided is a practically useful organic electroluminescent device (organic EL device) having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic electroluminescent device includes a light-emitting layer between an anode and a cathode opposite to each other. The light-emitting layer contains two host materials and at least one light-emitting dopant. One of the two host materials is a host material selected from an indolocarbazole compound having one indolocarbazole ring and an indolocarbazole compound having two indolocarbazole rings, and the other thereof is a host material selected from carbazole compounds.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: July 2, 2019
    Assignees: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Takayuki Fukumatsu, Katsuhide Noguchi, Masashi Tada, Mitsuru Sakai, Tohru Asari, Kazuto Shiraishi, Takahiro Kai, Yasuhiro Takahashi, Yuhki Terao, Taishi Tsuji, Yusuke Nakajima, Toshinao Yuki
  • Publication number: 20180069189
    Abstract: A substrate (100) transmits visible light. Plural light-emitting regions (142) are located on the substrate (100) and are aligned in a first direction. A non-light-emitting region (144) is provided in each area between the plural light-emitting regions (142) and transmits visible light. Moreover, the light-emitting region (142) includes plural light-emitting units (140). The light-emitting units (140) are aligned in the first direction. In addition, each light-emitting unit (140) includes a first electrode (110), an organic layer (120), and a second electrode (130). The organic layer (120) is formed between the first electrode (110) and the second electrode (130).
    Type: Application
    Filed: March 9, 2015
    Publication date: March 8, 2018
    Inventors: Kenji AOKI, Norikazu MITO, Toshinao YUKI
  • Patent number: 9290498
    Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secure of driving stability, and of a simple configuration. The organic EL device comprises organic layers comprising a hole-transporting layer and a light-emitting layer sandwiched between an anode and a cathode. The light-emitting layer contains a fluorescent light-emitting material and an electron- and/or exciton-blocking layer containing an indolocarbazole derivative represented by general formula (2) is disposed between the hole-transporting layer and the light-emitting layer so as to be adjacent to the light-emitting layer. In general formula (2), ring B is a heterocyclic ring fused to the adjacent rings and represented by formula (1c), Z is an n-valent aromatic hydrocarbon group or aromatic heterocyclic group, and n is 1 or 2.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: March 22, 2016
    Assignees: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD., PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Takahiro Kai, Toshihiro Yamamoto, Masaki Komori, Kazuaki Yoshimura, Taishi Tsuji, Yasuhiro Takahashi, Toshinao Yuki, Yusuke Nakajima
  • Publication number: 20150325796
    Abstract: Provided is a practically useful organic EL element having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic EL element has a light-emitting layer and any other organic layer between an anode and a cathode opposite to each other. The light-emitting layer contains at least two host materials and at least one light-emitting dopant. At least one of the host materials is a host material selected from compounds each having one or two indolocarbazole skeletons, and at least one of the other host materials is a host material selected from carbazole compounds each substituted with a dibenzofuran or a dibenzothiophene.
    Type: Application
    Filed: November 21, 2013
    Publication date: November 12, 2015
    Inventors: Masashi TADA, Takahiro KAI, Katsuhide NOGUCHI, Yasuhiro TAKAHASHI, Yuhki TERAO, Taishi TSUJI, Yusuke NAKAJIMA, Toshinao YUKI
  • Publication number: 20150115240
    Abstract: Provided is a practically useful organic electroluminescent device (organic EL device) having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic electroluminescent device includes a light-emitting layer between an anode and a cathode opposite to each other. The light-emitting layer contains two host materials and at least one light-emitting dopant. One of the two host materials is a host material selected from an indolocarbazole compound having one indolocarbazole ring and an indolocarbazole compound having two indolocarbazole rings, and the other thereof is a host material selected from carbazole compounds.
    Type: Application
    Filed: March 25, 2013
    Publication date: April 30, 2015
    Inventors: Takayuki Fukumatsu, Katsuhide Noguchi, Masashi Tada, Mitsuru Sakai, Tohru Asari, Kazuto Shiraishi, Takahiro Kai, Yasuhiro Takahashi, Yuhki Terao, Taishi Tsuji, Yusuke Nakajima, Toshinao Yuki
  • Patent number: 8957586
    Abstract: An organic EL panel including at least a light-emitting part and a sealing structure. The light-emitting part further includes at least an organic EL element formed on a substrate. The sealing structure further includes a sealing adhesive layer that contacts a coating film. The organic EL panel emits light from the light-emitting part through the substrate. The organic EL element includes at least the organic layer formed on a first electrode. The organic EL element further includes a second electrode formed on the at least one organic layer. The organic EL panel further includes the coating film coating the light-emitting part. A surface of the sealing adhesive forms a convex part formed by an inorganic material. A surface of the coating film forms a concave part that contacts the convex part.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: February 17, 2015
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Yuji Saito, Shinji Nakajima, Toshinao Yuki
  • Publication number: 20140252334
    Abstract: An organic EL panel including at least a light-emitting part and a sealing structure. The light-emitting part further includes at least an organic EL element formed on a substrate. The sealing structure further includes a sealing adhesive layer that contacts a coating film. The organic EL panel emits light from the light-emitting part through the substrate. The organic EL element includes at least the organic layer formed on a first electrode. The organic EL element further includes a second electrode formed on the at least one organic layer. The organic EL panel further includes the coating film coating the light-emitting part. A surface of the sealing adhesive forms a convex part formed by an inorganic material. A surface of the coating film forms a concave part that contacts the convex part.
    Type: Application
    Filed: April 8, 2014
    Publication date: September 11, 2014
    Applicants: TOHOKU PIONEER CORPORATION, PIONEER CORPORATION
    Inventors: Yuji Saito, Shinji Nakajima, Toshinao Yuki
  • Patent number: 8736164
    Abstract: An organic EL panel has a light-emitting part including one or a plurality of organic EL elements over a substrate and having a sealing structure sealing the light-emitting part. The organic EL element includes an organic layer formed on a first electrode, and a second electrode formed on the organic layer. The organic EL panel includes a coating film coating the light-emitting part. A contact object is arranged on an inner surface of the sealing structure. One or a plurality of convex parts is formed on the contact object. The coating film is formed to have a thickness larger than the length of the convex part.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: May 27, 2014
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Yuji Saito, Shinji Nakajima, Toshinao Yuki
  • Patent number: 8703303
    Abstract: Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure. The organic EL device comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises (A) a phosphorescent dopant whose emission peak wavelength is longer than 600 nm and (B) a host material. The host material contains at least two kinds of compounds selected from two or more kinds of derivatives included in (b1) N-substituted indolocarbazole derivatives, (b2) derivatives of 8-hydroxyquinoline aluminum complex, and (b3) bisindolocarbazole derivatives.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: April 22, 2014
    Assignees: Nippon Steel & Sumikin Chemical Co., Ltd., Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Toshihiro Yamamoto, Takahiro Kai, Masaki Komori, Taishi Tsuji, Yasuhiro Takahashi, Toshinao Yuki, Yusuke Nakajima, Tomoaki Hoshi, Jiro Asaka
  • Patent number: 8668541
    Abstract: A method for manufacturing an image display element including: a front panel; a back panel facing the front panel; plural pixels arranged in a matrix between the panels, and to be selected to be in a display or non-display state; and plural electrodes for controlling the pixels, the panels being bonded with the pixels and the electrodes interposed therebetween, and the electrodes being connected to a driving control circuit via metal wires, includes a first step of performing dicing from the back side of the opposing surface from the front panel, and forming a groove part such that electrode terminals connected to the electrodes are exposed between adjacent plural pixel lines, with the back panel bonded thereto, and a second step of forming the metal wires so as to be connected to the electrode terminals exposed at the groove part.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: March 11, 2014
    Assignees: Mitsubishi Electric Corporation, Tohoku Pioneer Corporation
    Inventors: Zenichiro Hara, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Yutaka Saito, Yuji Saito, Toshinao Yuki, Ryota Oki, Tekeshi Yoshida, Jun Sugahara, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Patent number: 8593054
    Abstract: An image display element includes: a front panel; a back panel opposite thereto; a plurality of pixels arranged between both the panels; and plural electrodes for controlling the pixels. The panels are bonded with the pixels and the electrodes interposed therebetween, and the electrodes are connected to a driving circuit via metal film wires. The back panel is divided so as to expose electrode terminals, and a groove part V-shaped in cross section is formed at the divided portion. The metal film wires are formed on the top surface of the back panel, and the electrode terminals and the metal film wires are connected by a conductive paste coated along the tilt surfaces forming the groove part. Partitions are disposed between the adjacent electrode terminals at the bottom of the groove part.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: November 26, 2013
    Assignees: Mitsubishi Electric Corporation, Tohoku Pioneer Corporation
    Inventors: Zenichiro Hara, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Masaaki Hiraki, Yutaka Saito, Yuji Saito, Toshinao Yuki, Ryota Oki, Takeshi Yoshida, Jun Sugahara, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Patent number: 8502447
    Abstract: An image display element includes: a front panel; a back panel opposite to the front panel; a plurality of pixels arranged in a matrix between both the panels, and to be selected to be in a display or non-display state; and plural electrodes for controlling the pixels. Both the panels are bonded together with the pixels and the electrodes interposed therebetween, and the electrodes are connected to a driving control circuit via metal wires. The back panel is divided such that electrode terminals connected to the electrodes are exposed between adjacent plural pixel lines, and a groove part having a shape wider at the top on the back side of the opposing surface from the front panel than at the bottom is formed at the divided portion. The metal wires are connected to the exposed electrode terminals of the groove part.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: August 6, 2013
    Assignees: Mitsubishi Electric Corporation, Tohoku Pioneer Corporation
    Inventors: Zenichiro Hara, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Yutaka Saito, Yuji Saito, Toshinao Yuki, Ryota Oki, Takeshi Yoshida, Jun Sugahara, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Publication number: 20130105783
    Abstract: An organic EL panel has a light-emitting part including one or a plurality of organic EL elements over a substrate and having a sealing structure sealing the light-emitting part. The organic EL element includes an organic layer formed on a first electrode, and a second electrode formed on the organic layer. The organic EL panel includes a coating film coating the light-emitting part. A contact object is arranged on an inner surface of the sealing structure. One or a plurality of convex parts is formed on the contact object. The coating film is formed to have a thickness larger than the length of the convex part.
    Type: Application
    Filed: December 18, 2012
    Publication date: May 2, 2013
    Inventors: Yuji Saito, Shinji Nakajima, Toshinao Yuki
  • Patent number: 8362698
    Abstract: An organic EL panel includes a light-emitting part including one or a plurality of organic EL elements on a substrate and having a sealing structure sealing the light-emitting part. The organic EL element includes a light-emitting layer, an organic layer formed on a first electrode formed directly, or via another layer, on the substrate, and a second electrode formed on the organic layer. The organic EL panel includes a coating film formed on the substrate, directly at least on the second electrode, so as to coat the light-emitting part. The coating film is made of an amorphous organic material and has a thickness absorbing a surface irregularity of the contact object contacted by the surface of the coating film.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: January 29, 2013
    Assignees: Tohoku Pioneer Corporation, Pioneer Corporation
    Inventors: Yuji Saito, Shinji Nakajima, Toshinao Yuki
  • Patent number: 8362362
    Abstract: An image display element includes: a front panel; a back panel opposite thereto; a plurality of pixels arranged in a matrix between both the panels; and plural electrodes for controlling the pixels. Both the panels are bonded together with the pixels and the electrodes interposed therebetween, and the electrodes are connected to a driving circuit via metal film wires. Division is performed so as to expose electrode terminals, and a groove part V-shaped in cross section is formed at the divided portion. The metal film wires are formed on the surface of the top of the back panel, and the electrode terminals and the metal film wires are connected by a conductive paste coated along the tilt surfaces forming the groove part.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: January 29, 2013
    Assignees: Mitsubishi Electric Corporation, Tohoku Pioneer Corporation
    Inventors: Zenichiro Hara, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Masaaki Hiraki, Jun Sugahara, Ryota Oki, Takeshi Yoshida, Yutaka Saito, Yuji Saito, Toshinao Yuki, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Publication number: 20120309253
    Abstract: A method for manufacturing an image display element including: a front panel; a back panel facing the front panel; plural pixels arranged in a matrix between the panels, and to be selected to be in a display or non-display state; and plural electrodes for controlling the pixels, the panels being bonded with the pixels and the electrodes interposed therebetween, and the electrodes being connected to a driving control circuit via metal wires, includes a first step of performing dicing from the back side of the opposing surface from the front panel, and forming a groove part such that electrode terminals connected to the electrodes are exposed between adjacent plural pixel lines, with the back panel bonded thereto, and a second step of forming the metal wires so as to be connected to the electrode terminals exposed at the groove part.
    Type: Application
    Filed: August 14, 2012
    Publication date: December 6, 2012
    Applicants: TOHOKU PIONEER CORPORATION, MITSUBISHI ELECTRIC CORPORATION
    Inventors: Zenichiro HARA, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Yutaka Saito, Yuji Saito, Toshinao Yuki, Ryota Oki, Takeshi Yoshida, Jun Sugahara, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Patent number: 8272911
    Abstract: A method for manufacturing an image display element including: a front panel; a back panel facing the front panel; plural pixels arranged in a matrix between the panels, and to be selected to be in a display or non-display state; and plural electrodes for controlling the pixels, the panels being bonded with the pixels and the electrodes interposed therebetween, and the electrodes being connected to a driving control circuit via metal wires, includes a first step of performing dicing from the back side of the opposing surface from the front panel, and forming a groove part such that electrode terminals connected to the electrodes are exposed between adjacent plural pixel lines, with the back panel bonded thereto, and a second step of forming the metal wires so as to be connected to the electrode terminals exposed at the groove part.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: September 25, 2012
    Assignees: Mitsubishi Electric Corporation, Tohoku Pioneer Corporation
    Inventors: Zenichiro Hara, Satoru Kiridoshi, Suguru Nagae, Takanori Okumura, Yoshiyuki Suehiro, Nobuo Terazaki, Yutaka Saito, Yuji Saito, Toshinao Yuki, Ryota Oki, Takeshi Yoshida, Jun Sugahara, Hiroyuki Sato, Yoshinori Fukuda, Yosuke Sato, Masami Kimura
  • Publication number: 20120205640
    Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secure of driving stability, and of a simple configuration. The organic EL device comprises organic layers comprising a hole-transporting layer and a light-emitting layer sandwiched between an anode and a cathode. The light-emitting layer contains a fluorescent light-emitting material and an electron- and/or exciton-blocking layer containing an indolocarbazole derivative represented by general formula (2) is disposed between the hole-transporting layer and the light-emitting layer so as to be adjacent to the light-emitting layer. In general formula (2), ring B is a heterocyclic ring fused to the adjacent rings and represented by formula (1c), Z is an n-valent aromatic hydrocarbon group or aromatic heterocyclic group, and n is 1 or 2.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 16, 2012
    Inventors: Takahiro Kai, Toshihiro Yamamoto, Masaki Komori, Kazuaki Yoshimura, Taishi Tsuji, Yasuhiro Takahashi, Toshinao Yuki, Yusuke Nakajima
  • Patent number: 8029684
    Abstract: A self-emission panel and a method of manufacturing a self-emission panel which can prevent emission failures from occurring due to various factors, thereby achieving a self-emission panel that is free from emission failures. The self-emission panel is manufactured by forming a first conductive layer on a substrate directly or via other layers, forming a deposition layer including a luminescent layer on the first conductive layer, and forming a second conductive layer on the deposition layer. This manufacturing method includes: a first step of forming a sectioning layer for sectioning an opening for making a emission area on the first conductive layer after the formation of the first conductive layer; a second step of applying surface treatment to at least the surface of the first conductive layer inside the opening; and a third step of depositing a deposition layer on the first conductive layer given surface treatment in the second step.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: October 4, 2011
    Assignee: Tohoku Pioneer Corporation
    Inventors: Shinji Nakajima, Yusuke Nakajima, Toshinao Yuki