Patents by Inventor Kenichi Nendai

Kenichi Nendai 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: 11038133
    Abstract: Disclosed is an organic EL display panel having pixels arranged in matrix includes a substrate, pixel electrodes disposed on the substrate for each of the pixels, insulating layers disposed so as to cover each upper part of the pixel electrodes and having not less than three slit-shaped openings extending and arranged in a column direction, partition walls extending in the column direction and partitioning the pixel electrodes in a row direction, organic functional layers disposed on the pixel electrodes and including organic luminous layers configured to cause electroluminescence in each of the openings, and light transmissive counter electrodes disposed on upper parts of the organic functional layers. Levels of top faces of the partition walls are higher than that of the insulating layers. Row-direction widths of openings adjacent to the partition walls in the row direction are larger than row-direction widths of openings not adjacent to the partition walls.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: June 15, 2021
    Assignee: JOLED INC.
    Inventors: Hideki Kobayashi, Jiro Yamada, Kenichi Nendai, Noriteru Maeda, Kenta Fukuoka
  • Patent number: 10879327
    Abstract: An organic EL display panel includes a substrate, an interlayer insulation layer formed over the substrate, and an organic EL light emitting section formed over the interlayer insulation layer. The organic EL light emitting section includes a plurality of pixel electrodes arranged in a matrix pattern, a plurality of partition walls each of which is disposed between the pixel electrodes adjacent to each other in a row direction and extends in a column direction, an organic layer including a light emitting layer formed in a region partitioned by the partition walls, and a counter electrode formed on an upper side of the organic layer, and includes a first light emitting section for a first color and a second light emitting section for a second color. The first and second light emitting sections are different in thickness of the organic layer and in digging amount of the interlayer insulation layer in the region partitioned by the partition walls.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventors: Yasuhiro Tanaka, Noriteru Maeda, Kenichi Nendai, Masayuki Kubota
  • Patent number: 10833138
    Abstract: An organic electroluminescence (EL) display panel having pixels arranged in a matrix of rows and columns includes: a substrate; pixel electrode layers that are made of a light-reflective material and are arranged on the substrate in the matrix; an insulating layer that is provided above the substrate and the pixel electrode layers; organic functional layers that are provided above the pixel electrode layers; and a light-transmissive counter electrode layer that is provided above the organic functional layers, wherein the insulating layer has a first opening and second openings for each of the pixel electrode layers, the first opening being elongated in a column direction, the second openings each being shorter than the first opening in the column direction and being lined up adjacent to the first opening, and the organic functional layers include light-emitting layers in which organic electroluminescence occurs in the first opening and the second openings.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: November 10, 2020
    Assignee: JOLED INC.
    Inventors: Kenichi Nendai, Jiro Yamada, Hideki Kobayashi, Kazuma Teramoto, Kaoru Abe
  • Publication number: 20200279897
    Abstract: Disclosed is an organic EL display panel including: a substrate; a planarization layer being disposed on an upper surface of the substrate and containing a resin material; plural pixel electrodes being disposed in a matrix manner on the planarization layer; a light emitting layer being disposed on the pixel electrodes and containing an organic luminescent material; and a common electrode covering at least an upper side of the light emitting layer and being disposed continuously in a plane direction. A recessed part is opened to extend in a column direction in at least one gap between the pixel electrodes adjacent to each other in a row direction on the planarization layer, the common electrode is disposed continuously in the recessed part, and a power feed auxiliary interconnect extending in the column direction and formed of an applied film is disposed on an upper surface of the common electrode.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 3, 2020
    Applicant: JOLED Inc.
    Inventors: Kenichi NENDAI, Jiro YAMADA
  • Publication number: 20200243613
    Abstract: Disclosed are an organic EL display panel and a method of manufacturing an organic EL display panel including a display element array having a plurality of pixels arranged in a form of a matrix. An organic EL display panel includes: a substrate; a planarizing layer; an organic electro luminescence element array; an electrode plate; a plurality of sealing members; and a sealing layer. The method of manufacturing an organic EL display panel includes: preparing a substrate; forming a planarizing layer; forming a plurality of pixel electrodes, and forming an electrode plate; forming sealing members; forming functional layers; forming a common electrode; and forming a sealing layer on the common electrode.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 30, 2020
    Applicant: JOLED Inc.
    Inventors: Kenichi NENDAI, Takashi OSAKO, Kenji KOKUDA
  • Patent number: 10692946
    Abstract: An organic electroluminescence (EL) display panel includes pixels arranged in a matrix of rows and columns, and includes: a substrate; pixel electrode layers that are arranged on the substrate in the matrix; an insulating layer that is provided above the substrate and the pixel electrode layers, and has elongated openings and a grooved portion for each of the pixels, the openings extending in a column direction and being arranged in a row direction, the grooved portion having an upper opening and a bottom and being communicated with at least one of the openings in plan view; organic functional layers that are provided above the pixel electrode layers, and include light emitting layers in which organic electroluminescence occurs in the openings; and a light-transmissive counter electrode layer that is provided above the organic functional layers. Cross-sectional profiles of the openings taken along the row direction are uniform in the column direction.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: June 23, 2020
    Assignee: JOLED INC.
    Inventors: Jiro Yamada, Kazuma Teramoto, Kenichi Nendai, Kaoru Abe, Hideki Kobayashi, Hirotaka Nanno
  • Patent number: 10680047
    Abstract: An organic EL display panel including pixels arranged in a matrix includes: a substrate; pixel electrodes arranged above the substrate in the matrix; an insulating layer provided above the pixel electrodes and having openings for each pixel electrode; banks extending in a column direction and partitioning between the pixel electrodes in a row direction; organic functional layers provided above the pixel electrodes and including organic light emitting layers where organic electroluminescence occurs in the openings; and a light-transmissive counter electrode provided above the functional layers. The openings include: first openings arranged in line in the column direction; and a second opening adjacent to one of the first openings in the row direction. Portions of the insulating layer between the first openings adjacent in the column direction are lower in height relative to the pixel electrode than a portion of the insulating layer between the first opening and the second opening.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: June 9, 2020
    Assignee: JOLED INC.
    Inventors: Kenichi Nendai, Noriteru Maeda, Kenta Fukuoka
  • Publication number: 20200161390
    Abstract: A display unit is provided with a plurality of pixels that are two-dimensionally arranged and each include an organic electroluminescence element emitting light of one of a plurality of colors. The pixels are arranged along one direction for each of light emission colors. The pixels each include a first insulating film, a second insulating film, and an organic layer. The first insulating film has openings for the respective pixels. The second insulating film extends along the arrangement direction for each of the light emission colors, in a region between pixels of different light emission colors, out of the plurality of pixels, on the first insulating film. The organic layer is formed in each of the openings, and includes a light-emitting layer. The first insulating film includes a recess that connects together the openings of pixels of the same light emission color, out of the plurality of pixels.
    Type: Application
    Filed: April 20, 2017
    Publication date: May 21, 2020
    Inventors: Kazuma TERAMOTO(deceased), Jiro YAMADA, Kenichi NENDAI, Kaoru ABE, Hideki KOBAYASHI
  • Patent number: 10553805
    Abstract: An organic EL display panel with improved visibility is disclosed which includes sub-pixels each emitting light of a color selected from R, G, and B and disposed in a matrix, pixel electrodes disposed above a substrate in the matrix corresponding to the sub-pixels, and column banks row-directionally arranged extending in the column direction. The organic EL display panel further includes pairs of auxiliary column banks extending parallel to the main column banks, disposed in gaps between pairs of the column banks adjacent to each other where the pixel electrodes corresponding to the sub-pixels emitting the B color are present, each pair of the auxiliary column banks covering both edges in the row direction of each of the pixel electrodes therebetween.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: February 4, 2020
    Assignee: JOLED INC.
    Inventors: Noriteru Maeda, Kenichi Nendai
  • Publication number: 20200013839
    Abstract: An organic EL display panel includes a substrate, an interlayer insulation layer formed over the substrate, and an organic EL light emitting section formed over the interlayer insulation layer. The organic EL light emitting section includes a plurality of pixel electrodes arranged in a matrix pattern, a plurality of partition walls each of which is disposed between the pixel electrodes adjacent to each other in a row direction and extends in a column direction, an organic layer including a light emitting layer formed in a region partitioned by the partition walls, and a counter electrode formed on an upper side of the organic layer, and includes a first light emitting section for a first color and a second light emitting section for a second color. The first and second light emitting sections are different in thickness of the organic layer and in digging amount of the interlayer insulation layer in the region partitioned by the partition walls.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 9, 2020
    Inventors: YASUHIRO TANAKA, NORITERU MAEDA, KENICHI NENDAI, MASAYUKI KUBOTA
  • Publication number: 20200006661
    Abstract: A patterning device performs patterning in manufacture of a display panel in which thin films including an organic film are laminated above a substrate. The patterning device includes a chamber, light transmissive plates, and a laser emitter. The chamber has a light transmissive window including a first light transmissive plate through which a laser beam is transmitted and accommodates a thin film laminated substrate. A second light transmissive plate through which the laser beam is transmitted is in the chamber between the first light transmissive plate and the thin film laminated substrate at a position spaced away from the thin film laminated substrate. The laser emitter is outside the chamber and emits the laser beam towards the thin film laminated substrate, through the first light transmissive plate and the second light transmissive plate, to irradiate and remove a portion of the thin film.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventors: Yasuharu SHINOKAWA, Kenichi NENDAI, Shuhei YADA, Jun YAMAGUCHI
  • Publication number: 20190371872
    Abstract: An organic EL display panel including pixels arranged in a matrix includes: a substrate; pixel electrodes arranged above the substrate in the matrix; an insulating layer provided above the pixel electrodes and having openings for each pixel electrode; banks extending in a column direction and partitioning between the pixel electrodes in a row direction; organic functional layers provided above the pixel electrodes and including organic light emitting layers where organic electroluminescence occurs in the openings; and a light-transmissive counter electrode provided above the functional layers. The openings include: first openings arranged in line in the column direction; and a second opening adjacent to one of the first openings in the row direction. Portions of the insulating layer between the first openings adjacent in the column direction are lower in height relative to the pixel electrode than a portion of the insulating layer between the first opening and the second opening.
    Type: Application
    Filed: January 25, 2019
    Publication date: December 5, 2019
    Inventors: Kenichi NENDAI, Noriteru MAEDA, Kenta FUKUOKA
  • Publication number: 20190326537
    Abstract: Disclosed is an organic EL display panel having pixels arranged in matrix includes a substrate, pixel electrodes disposed on the substrate for each of the pixels, insulating layers disposed so as to cover each upper part of the pixel electrodes and having not less than three slit-shaped openings extending and arranged in a column direction, partition walls extending in the column direction and partitioning the pixel electrodes in a row direction, organic functional layers disposed on the pixel electrodes and including organic luminous layers configured to cause electroluminescence in each of the openings, and light transmissive counter electrodes disposed on upper parts of the organic functional layers. Levels of top faces of the partition walls are higher than that of the insulating layers. Row-direction widths of openings adjacent to the partition walls in the row direction are larger than row-direction widths of openings not adjacent to the partition walls.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Inventors: HIDEKI KOBAYASHI, JIRO YAMADA, KENICHI NENDAI, NORITERU MAEDA, KENTA FUKUOKA
  • Publication number: 20190312235
    Abstract: An organic electroluminescent element includes, in order, a substrate, a first electrode layer, a light-emitting layer, a second electrode layer, a first refractive index layer, and a second refractive index layer. The first refractive index layer and the second refractive index layer are in contact with each other at an interface. The light-emitting layer has a light-emitting region opposed to the first electrode layer. The interface has a recess opposed to the light-emitting region.
    Type: Application
    Filed: March 1, 2019
    Publication date: October 10, 2019
    Inventors: KENTA FUKUOKA, JIRO YAMADA, HIDEKI KOBAYASHI, KENICHI NENDAI, AKIFUMI OKIGAWA
  • Publication number: 20190214602
    Abstract: A display unit includes a plurality of pixels and a first insulating film. The plurality of pixels are arranged in matrix in a first direction and a second direction. The first insulating film is provided between adjacent pixels of the pixels, and has first openings in light-emitting regions of the respective pixels. The first insulating film has, between pixels adjacent in the second direction of the pixels, a second opening extending in the first direction, and a remaining part inside the second opening.
    Type: Application
    Filed: April 20, 2017
    Publication date: July 11, 2019
    Inventors: Kazuma TERAMOTO(deceased), Kenichi NENDAI, Jiro YAMADA, Hideki KOBAYASHI
  • Publication number: 20190206287
    Abstract: An organic electroluminescence (EL) display panel includes pixels arranged in a matrix of rows and columns. The pixels each include a lower layer, an inner insulating layer, an application-type functional layer, and an upper electrode that are layered in this order. The lower layer includes a lower electrode. The functional layer includes a light-emitting layer. The inner insulating layer has one or more openings in which the lower layer is exposed. The openings each have a width increasing toward the upper electrode and have a slope toward a periphery of the pixel. In plan view, the openings are constituted from a plurality of elongated opening pieces.
    Type: Application
    Filed: May 22, 2017
    Publication date: July 4, 2019
    Inventors: Hideki KOBAYASHI, Jiro YAMADA, Kaoru ABE, Kazuma TERAMOTO(deceased), Kenichi NENDAI
  • Publication number: 20190206957
    Abstract: An organic electroluminescence (EL) display panel includes pixels arranged in a matrix of rows and columns, and includes: a substrate; pixel electrode layers that are arranged on the substrate in the matrix; an insulating layer that is provided above the substrate and the pixel electrode layers, and has elongated openings and a grooved portion for each of the pixels, the openings extending in a column direction and being arranged in a row direction, the grooved portion having an upper opening and a bottom and being communicated with at least one of the openings in plan view; organic functional layers that are provided above the pixel electrode layers, and include light emitting layers in which organic electroluminescence occurs in the openings; and a light-transmissive counter electrode layer that is provided above the organic functional layers. Cross-sectional profiles of the openings taken along the row direction are uniform in the column direction.
    Type: Application
    Filed: May 17, 2017
    Publication date: July 4, 2019
    Inventors: Jiro YAMADA, Kazuma TERAMOTO(deceased), Kenichi NENDAI, Kaoru ABE, Hideki KOBAYASHI, Hirotaka NANNO
  • Publication number: 20190189715
    Abstract: An organic electroluminescence (EL) display panel having pixels arranged in a matrix of rows and columns includes: a substrate; pixel electrode layers that are made of a light-reflective material and are arranged on the substrate in the matrix; an insulating layer that is provided above the substrate and the pixel electrode layers; organic functional layers that are provided above the pixel electrode layers; and a light-transmissive counter electrode layer that is provided above the organic functional layers, wherein the insulating layer has a first opening and second openings for each of the pixel electrode layers, the first opening being elongated in a column direction, the second openings each being shorter than the first opening in the column direction and being lined up adjacent to the first opening, and the organic functional layers include light-emitting layers in which organic electroluminescence occurs in the first opening and the second openings.
    Type: Application
    Filed: June 1, 2017
    Publication date: June 20, 2019
    Inventors: Kenichi NENDAI, Jiro YAMADA, Hideki KOBAYASHI, Kazuma TERAMOTO(deceased), Kaoru ABE
  • Patent number: 10229959
    Abstract: An organic electroluminescence (EL) display panel including pixels arranged in a matrix, the organic EL display panel includes: a substrate; pixel electrode layers made of a light-reflective material and arranged on the substrate in a matrix; an insulating layer provided at least above row and column outer edges of the pixel electrode layers and above inter-regions on the substrate between the row and column outer edges; an organic functional layer provided above the pixel electrode layers; and a counter electrode layer made of a light-transmissive material and is provided above the organic functional layer, wherein the organic functional layer includes light-emitting layers that are provided in regions above the pixel electrode layers where the insulating layer is not provided, the light-emitting layers causing organic electroluminescence, and the insulating layer has an optical density of 0.5 to 1.5 in a direction of the substrate when viewed in plan.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: March 12, 2019
    Assignee: JOLED INC.
    Inventors: Kaoru Abe, Takashi Osako, Kenichi Nendai
  • Publication number: 20190074471
    Abstract: A display unit is provided with a plurality of pixels. The plurality of pixels each include a first electrode, an insulating film, an organic layer, and a second electrode. The insulating film is provided on the first electrode, and has openings. The organic layer is provided in each of the openings of the insulating film, and includes a light-emitting layer. The second electrode is provided on the organic layer. The first electrode includes a plurality of sub-electrodes that are provided to face the respective openings of the insulating film.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 7, 2019
    Inventors: Kaoru ABE, Jiro YAMADA, Kazuma TERAMOTO, Kenichi NENDAI, Hideki KOBAYASHI, Masaki NISHIMURA