Patents by Inventor Mitsutoshi Akatsu

Mitsutoshi Akatsu 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: 11145845
    Abstract: A method for producing an organic device includes a first forming step and a second forming step, and wherein an upper limit value of an integrated illuminance of light in an environment until formation of a second electrode layer (15) starts after formation of a light emitting layer (11) starts is set, and an organic functional layer is formed so that the integrated illuminance is the upper limit value or less, and wherein the upper limit value of the integrated illuminance at which a product lifespan is a predetermined time or longer is set on the basis of a relationship of the integrated illuminance with relative lifespan and relative current luminous efficiency so that the product lifespan of an organic device (1) set based on the relative lifespan and the relative current luminous efficiency caused by the integrated illuminance is the predetermined time or longer.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: October 12, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Mitsutoshi Akatsu
  • Publication number: 20200381673
    Abstract: A method for producing an organic device includes a first forming step and a second forming step, and wherein an upper limit value of an integrated illuminance of light in an environment until formation of a second electrode layer (15) starts after formation of a light emitting layer (11) starts is set, and an organic functional layer is formed so that the integrated illuminance is the upper limit value or less, and wherein the upper limit value of the integrated illuminance at which a product lifespan is a predetermined time or longer is set on the basis of a relationship of the integrated illuminance with relative lifespan and relative current luminous efficiency so that the product lifespan of an organic device (1) set based on the relative lifespan and the relative current luminous efficiency caused by the integrated illuminance is the predetermined time or longer.
    Type: Application
    Filed: November 7, 2018
    Publication date: December 3, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Mitsutoshi AKATSU
  • Publication number: 20190252617
    Abstract: An inspecting apparatus according to one embodiment includes: first and second conducting rollers 20A and 20B that are arranged such that roller surfaces 21A and 21B come into contact with first and second electrode parts 12 and 13 of an organic electronic device 10, and energize the first and second electrode parts; and a data acquisition unit 40 for electrical characteristic inspection of the organic electronic device energized by the first and second conducting rollers. On the roller surface of the first conducting roller, an electrical potential within a contact region in contact with the first electrode part and continuously extending in a circumferential direction is same; and on the roller surface of the second conducting roller, an electrical potential within a contact region in contact with the second electrode part and continuously extending in a circumferential direction is same.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 15, 2019
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Mitsutoshi AKATSU
  • Publication number: 20130075708
    Abstract: The present invention provides a light emitting device 11 that includes a support substrate 13, partition walls 12 provided on the support substrate 13 and defining sections set on the support substrate 13, and a plurality of organic electroluminescent (EL) elements 14 provided on the sections defined by the partition walls 12. Each of the organic EL elements 14 is configured by laminating a first electrode 15, an organic EL layer, and a second electrode 18 in this order on the support substrate 13. At least part of the first electrode 15 is arranged apart from the partition walls 12 on the support substrate 13. The organic EL layer has an extension portion 20 extending from the first electrode 15 to the partition walls 12. A surface of a member in contact with a bottom surface of the extension portion 20 has a lyophilic property higher than that of a surface of each of the partition walls 12.
    Type: Application
    Filed: March 24, 2011
    Publication date: March 28, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takashi Kurihara, Mitsutoshi Akatsu, Takuji Fujisawa
  • Publication number: 20110227100
    Abstract: A light-emitting device comprises: a substrate; a plurality of organic electroluminescent elements provided on the substrate; and a partition defining pixel areas in each of which one of the organic EL elements is provided. The partition comprises an insulating film provided with openings each hollowly formed in an area corresponding to one of the pixel areas and a partition body provided on an opposite side of the insulating film with respect to the substrate. Each of the organic EL elements comprises a pair of electrodes and a light-emitting portion that is interposed between the electrodes and that is arranged in an area surrounded by the insulating film. The thickness of the insulating film is smaller than the thickness of the light-emitting portion.
    Type: Application
    Filed: November 26, 2009
    Publication date: September 22, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takashi Kurihara, Yukiya Nishioka, Masaru Kajitani, Takuji Fujisawa, Mitsutoshi Akatsu, Satoshi Amamiya