公开(公告)号：US20190334119A1

公开(公告)日：2019-10-31

申请号：US16505892

申请日：2019-07-09

Applicant: Japan Display Inc.

Inventor： Toshihiro SATO ,  Hironori Toyoda

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/50

Abstract: 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.

公开(公告)号：US10388907B2

公开(公告)日：2019-08-20

申请号：US16029713

申请日：2018-07-09

Applicant: Japan Display Inc.

Inventor： Toshihiro Sato ,  Hironori Toyoda

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/50

Abstract: 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.

公开(公告)号：US20180019436A1

公开(公告)日：2018-01-18

申请号：US15705473

申请日：2017-09-15

Applicant: Japan Display Inc.

Inventor： Toshihiro Sato ,  Hironori Toyoda

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/5246 ,  H01L27/3211 ,  H01L27/3213 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3251 ,  H01L27/3258 ,  H01L27/3276 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5221 ,  H01L51/5234 ,  H01L51/5243 ,  H01L51/5253 ,  H01L51/5256 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/558

Abstract: 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.

公开(公告)号：US09825102B2

公开(公告)日：2017-11-21

申请号：US14497365

申请日：2014-09-26

Applicant: Japan Display Inc.

Inventor： Hironori Toyoda ,  Toshihiro Sato

IPC: H01L29/08 ,  H01L27/32 ,  H01L51/52

CPC classification number: H01L27/322 ,  H01L27/3209 ,  H01L27/3213 ,  H01L51/5278 ,  H01L2251/5315 ,  H01L2251/558

Abstract: 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.

公开(公告)号：US09799846B2

公开(公告)日：2017-10-24

申请号：US15401382

申请日：2017-01-09

Applicant: Japan Display Inc.

Inventor： Toshihiro Sato ,  Hironori Toyoda

IPC: H01J1/62 ,  H01L51/52 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/5246 ,  H01L27/3211 ,  H01L27/3213 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3251 ,  H01L27/3258 ,  H01L27/3276 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5221 ,  H01L51/5234 ,  H01L51/5243 ,  H01L51/5253 ,  H01L51/5256 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/558

Abstract: 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.

公开(公告)号：US09257491B2

公开(公告)日：2016-02-09

申请号：US14683628

申请日：2015-04-10

Applicant: JAPAN DISPLAY INC.

Inventor： Toshihiro Sato ,  Hironori Toyoda ,  Jun Fujiyoshi

IPC: H01L29/04 ,  H01L27/32 ,  H01L33/10 ,  H01L51/52 ,  H01L51/50

CPC classification number: H01L27/322 ,  H01L27/3218 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3262 ,  H01L33/10 ,  H01L51/5036 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5228 ,  H01L51/5234 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5271 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/305 ,  H01L2251/308 ,  H01L2251/5307

Abstract: 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.

公开(公告)号：US11088340B2

公开(公告)日：2021-08-10

申请号：US15919243

申请日：2018-03-13

Applicant: Japan Display Inc.

Inventor： Hironori Toyoda

IPC: H01L51/50 ,  H01L51/56 ,  H01L27/32 ,  H01L51/52 ,  H01L51/00

Abstract: 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.

公开(公告)号：US10825877B2

公开(公告)日：2020-11-03

申请号：US16783297

申请日：2020-02-06

Applicant: Japan Display Inc.

Inventor： Hironori Toyoda

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/56

Abstract: Provided is an electroluminescence display device including, on a substrate, a plurality of pixels having a light emitting layer made of an electroluminescent material obtained by adding a dopant to a host material, and a bank that separates the adjacent pixels and has been subjected to bleaching processing, in which within the plane of the substrate, the concentration of the dopant in the light emitting layer is distributed and the intensity of the bleaching processing performed on the bank is distributed.

公开(公告)号：US10095073B2

公开(公告)日：2018-10-09

申请号：US15707139

申请日：2017-09-18

Applicant: Japan Display Inc.

Inventor： Hironori Toyoda

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/139

Abstract: 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.

公开(公告)号：US20180166651A1

公开(公告)日：2018-06-14

申请号：US15881160

申请日：2018-01-26

Applicant: Japan Display Inc.

Inventor： Toshihiro Sato ,  Hironori Toyoda

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/5246 ,  H01L27/3211 ,  H01L27/3213 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3251 ,  H01L27/3258 ,  H01L27/3276 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5221 ,  H01L51/5234 ,  H01L51/5243 ,  H01L51/5253 ,  H01L51/5256 ,  H01L51/5284 ,  H01L2251/301 ,  H01L2251/558

Abstract: 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.