Patents by Inventor Wataru AITA

Wataru AITA 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).

  • Organic charge transport layer, organic EL device, organic semiconductor device, and organic photoelectric device
    Patent number: 10381566
    Abstract: The present invention relates to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. An object of the present invention is to provide an organic semiconductor thin film having a dramatically reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and the electret material has a refractive index of 1.5 or lower.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 13, 2019
    Assignee: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Daisuke Yokoyama, Yasutaka Suzuki, Wataru Aita
  • ORGANIC CHARGE TRANSPORT LAYER, ORGANIC EL DEVICE, ORGANIC SEMICONDUCTOR DEVICE, AND ORGANIC PHOTOELECTRIC DEVICE
    Publication number: 20180366650
    Abstract: The present invention relates to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. An object of the present invention is to provide an organic semiconductor thin film having a dramatically reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and the electret material has a refractive index of 1.5 or lower.
    Type: Application
    Filed: June 17, 2016
    Publication date: December 20, 2018
    Applicant: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Daisuke YOKOYAMA, Yasutaka SUZUKI, Wataru AITA