Patents by Inventor Hironori Toyoda
Hironori Toyoda 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).
-
Publication number: 20180315955Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: ApplicationFiled: July 9, 2018Publication date: November 1, 2018Inventors: Toshihiro SATO, Hironori TOYODA
-
Publication number: 20180294423Abstract: To provide a display device including a light emitting element layer including an anode electrode, a light emissive layer formed on the anode electrode, and a cathode electrode formed on the light emissive layer, and a bank formed on the lower electrode and having an opening, in which the lower electrode is partially exposed, wherein the light emissive layer includes a p-doped hole transport layer containing p-dopant, and the p-doped hole transport layer contains a larger amount of p-dopant in an area close to an end portion of the opening of the bank than the amount of p-dopant contained in other areas.Type: ApplicationFiled: March 13, 2018Publication date: October 11, 2018Applicant: Japan Display Inc.Inventor: Hironori TOYODA
-
Publication number: 20180294424Abstract: To provide a display device including a plurality of pixels; a light emitting element layer formed across the plurality of pixels; and a bank formed so as to separately define adjacent pixels among the plurality of pixels, wherein the light emitting element layer includes a p-doped hole transport layer containing p-dopant, and the p-doped hole transport layer is formed on each of the pixels such that the p-doped hole transport layers on the respective adjacent pixels are separated from each other on the bank.Type: ApplicationFiled: March 28, 2018Publication date: October 11, 2018Applicant: Japan Display Inc.Inventor: Hironori TOYODA
-
Publication number: 20180294431Abstract: An organic EL display device includes an anode, an organic light-emitting unit formed on the anode, and a cathode formed on the organic light-emitting unit and containing In. The organic light-emitting unit includes a light-emitting layer, and an electron injection layer formed between the cathode and the light-emitting layer, and an In concentration in layers of the organic light-emitting unit other than the electron injection layer is equal to or less than one-twentieth that in the cathode.Type: ApplicationFiled: March 14, 2018Publication date: October 11, 2018Applicant: Japan Display Inc.Inventors: Hironori TOYODA, Takahiro USHIKUBO
-
Patent number: 10095073Abstract: A display device includes: a pixel electrode formed on an insulating surface; a bank that covers an edge of the pixel electrode and at the same time has an opening in which an upper surface of the pixel electrode is not covered by the bank; an organic layer that covers the opening and includes a light emitting layer; an opposing electrode that is formed on the organic layer and the bank; a cap layer that is formed on the opposing electrode; and a hygroscopic layer that contains a hygroscopic agent and that is formed on the opposing electrode in a region that overlaps with the bank but does not overlap with the opening in a planar view from a display surface side.Type: GrantFiled: September 18, 2017Date of Patent: October 9, 2018Assignee: Japan Display Inc.Inventor: Hironori Toyoda
-
Patent number: 10043995Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: GrantFiled: January 26, 2018Date of Patent: August 7, 2018Assignee: Japan Display Inc.Inventors: Toshihiro Sato, Hironori Toyoda
-
Publication number: 20180175118Abstract: An organic EL display device includes at least one light emitting unit that includes a first electrode, an organic film that includes a light emitting layer and is provided over the first electrode, and a second electrode that is provided over the organic film and transmits light from the light emitting layer, and an optical adjusting layer that covers the at least one light emitting unit. The optical adjusting layer in a first area that overlaps the at least one light emitting unit in a planar view and the optical adjusting layer in at least one second area that is adjacent to the first area are different from each other in at least one of a number of layers that the optical adjusting layer includes, a film thickness, and a refractive index.Type: ApplicationFiled: December 14, 2017Publication date: June 21, 2018Applicant: Japan Display Inc.Inventors: Hironori TOYODA, Norihisa Maeda
-
Publication number: 20180166651Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: ApplicationFiled: January 26, 2018Publication date: June 14, 2018Inventors: Toshihiro Sato, Hironori Toyoda
-
Patent number: 9972666Abstract: A display device includes a pixel electrode, a pixel isolation insulating film in which an opening through which the pixel electrode is exposed at a bottom is formed, and a light-emitting layer formed inside the opening. The pixel isolation insulating film contains particles that receive light emitted from the light-emitting layer and propagate light in a direction different from that of the light emitted from the light-emitting layer.Type: GrantFiled: March 7, 2017Date of Patent: May 15, 2018Assignee: Japan Display Inc.Inventors: Hironori Toyoda, Toshihiro Sato
-
Publication number: 20180088419Abstract: A display device includes: a pixel electrode formed on an insulating surface; a bank that covers an edge of the pixel electrode and at the same time has an opening in which an upper surface of the pixel electrode is not covered by the bank; an organic layer that covers the opening and includes a light emitting layer; an opposing electrode that is formed on the organic layer and the bank; a cap layer that is formed on the opposing electrode; and a hygroscopic layer that contains a hygroscopic agent and that is formed on the opposing electrode in a region that overlaps with the bank but does not overlap with the opening in a planar view from a display surface side.Type: ApplicationFiled: September 18, 2017Publication date: March 29, 2018Applicant: Japan Display Inc.Inventor: Hironori TOYODA
-
Patent number: 9929375Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: GrantFiled: September 15, 2017Date of Patent: March 27, 2018Assignee: Japan Display Inc.Inventors: Toshihiro Sato, Hironori Toyoda
-
Publication number: 20180062114Abstract: A display device includes a light emitting device layer including a light emitting layer, a light-transmissive upper electrode on the light emitting device layer, a lower electrode having light transmittance and moisture permeability under the light emitting device layer, a light reflection layer under the lower electrode, and a hygroscopic layer having a hygroscopic property between the lower electrode and the light reflection layer.Type: ApplicationFiled: July 24, 2017Publication date: March 1, 2018Applicant: Japan Display Inc.Inventor: Hironori TOYODA
-
Publication number: 20180019436Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light-emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic mate-rial; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: ApplicationFiled: September 15, 2017Publication date: January 18, 2018Inventors: Toshihiro Sato, Hironori Toyoda
-
Patent number: 9825102Abstract: An organic EL display device includes: a TFT substrate that includes a display area in which pixels are arranged in a matrix; and a color filter substrate that is provided to face the TFT substrate and includes an area transmitting light in a predetermined wavelength range for each of the pixels. Each of the pixels of the TFT substrate includes a pair of electrodes, at least two light emission layers that are arranged between the pair of electrodes, and a charge generation layer that is arranged between the at least two light emission layers, is a layer to generate a pair of positive and negative charges, and has different film thicknesses in accordance with the predetermined wavelength range of the corresponding area.Type: GrantFiled: September 26, 2014Date of Patent: November 21, 2017Assignee: Japan Display Inc.Inventors: Hironori Toyoda, Toshihiro Sato
-
Patent number: 9799846Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area; a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: GrantFiled: January 9, 2017Date of Patent: October 24, 2017Assignee: Japan Display Inc.Inventors: Toshihiro Sato, Hironori Toyoda
-
Publication number: 20170279067Abstract: An organic EL display device includes an anode, a cathode and a light-emitting unit disposed between the anode and the cathode. The cathode is a transparent conductive film formed on the light-emitting unit. The light-emitting unit includes a light-emitting layer, an electron transport layer disposed between the light-emitting layer and the cathode, and an electron injection layer, disposed between the electron transport layer and the cathode, which is doped with an alkali metal. A thickness of the electron injection layer is equal to or greater than two times that of the electron transport layer.Type: ApplicationFiled: December 9, 2016Publication date: September 28, 2017Applicant: Japan Display Inc.Inventors: Takahiro Ushikubo, Hironori Toyoda
-
Publication number: 20170278911Abstract: A display device includes a pixel electrode, a pixel isolation insulating film in which an opening through which the pixel electrode is exposed at a bottom is formed, and a light-emitting layer formed inside the opening. The pixel isolation insulating film contains particles that receive light emitted from the light-emitting layer and propagate light in a direction different from that of the light emitted from the light-emitting layer.Type: ApplicationFiled: March 7, 2017Publication date: September 28, 2017Applicant: Japan Display Inc.Inventors: Hironori TOYODA, Toshihiro Sato
-
Patent number: 9692001Abstract: The display device includes a first organic electroluminescence element which includes an anode and a cathode which form a pair, and a light emitting layer which is formed between the anode and the cathode on a substrate. The light emitting layer includes a plurality of sub-light emitting layers which perform light emitting of colors which are respectively different. Each of the plurality of sub-light emitting layers is doped with a quantum dot light emitting material corresponding to a color to be emitted. A current with current density corresponding to a position of a sub-light emitting layer of a desired color among the plurality of sub-light emitting layers is injected to the light emitting layer, and the sub-light emitting layer of the desired color performs light emitting.Type: GrantFiled: August 28, 2015Date of Patent: June 27, 2017Assignee: Japan Display Inc.Inventors: Hironori Toyoda, Toshihiro Sato
-
Publication number: 20170125727Abstract: An organic electroluminescence display device includes: a lower electrode that is made of a conductive inorganic material and formed in each of pixels arranged in a matrix in a display area a light-emitting organic layer that is in contact with the lower electrode and made of a plurality of different organic material layers including a light emitting layer emitting light; an upper electrode that is in contact with the light-emitting organic layer, formed so as to cover the whole of the display area, and made of a conductive inorganic material; and a conductive organic layer that is in contact with the upper electrode, formed so as to cover the whole of the display area, and made of a conductive organic material.Type: ApplicationFiled: January 9, 2017Publication date: May 4, 2017Inventors: Toshihiro SATO, Hironori TOYODA
-
Patent number: 9614011Abstract: There is provided an EL display device of a color filter system which obtains sufficient brightness and contrast while making it difficult to generate a color mixture even if pixels become fine. An EL display device 100 according to the present invention includes a first substrate 1, a circuit layer 2 formed on the first substrate 1, a color selection reflection layer 11 formed in an upper layer of the circuit layer 2, lower electrodes 5 formed in an upper layer of the color selection reflection layer 11, a white light emission EL layer 7 formed in an upper layer of the lower electrodes 5, an upper electrode 8 formed in an upper layer of the EL layer 7, and a sealing layer 9 formed in an upper layer of the upper electrode 8.Type: GrantFiled: December 22, 2015Date of Patent: April 4, 2017Assignee: Japan Display Inc.Inventors: Toshihiro Sato, Hironori Toyoda, Jun Fujiyoshi