公开(公告)号：US11251230B2

公开(公告)日：2022-02-15

申请号：US17003021

申请日：2020-08-26

Applicant: Japan Display Inc.

Inventor： Hironori Toyoda ,  Norihisa Maeda

IPC: H01L27/32 ,  H01L51/52

Abstract: 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.

公开(公告)号：US20180123068A1

公开(公告)日：2018-05-03

申请号：US15730162

申请日：2017-10-11

Applicant: Japan Display Inc.

Inventor： Takahiro USHIKUBO ,  Norihisa Maeda

IPC: H01L51/50 ,  H01L27/32

CPC classification number: H01L51/504 ,  H01L27/3244 ,  H01L51/5064 ,  H01L51/5092 ,  H01L51/5253 ,  H01L51/5265

Abstract: Provided is a display device having a first pixel and a second pixel adjacent to the first pixel. The first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a second electrode over the first EL layer. The second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the second electrode over the second EL layer. The display device further possesses a first cap layer over the second electrode, a second cap layer over the first cap layer and overlapping with the first EL layer, and a third cap layer covering the second cap layer, overlapping with the first EL layer and the second EL layer, and in contact with the first cap layer in a region overlapping with the second EL layer.

公开(公告)号：US20190280239A1

公开(公告)日：2019-09-12

申请号：US16294981

申请日：2019-03-07

Applicant: Japan Display Inc.

Inventor： Norihisa Maeda

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

Abstract: An organic EL display device according to an embodiment of the present invention includes: a substrate; a plurality of pixels located on the substrate; lower electrodes respectively included in the plurality of pixels; a bank defining the plurality of pixels and located between the lower electrodes next to each other; an organic material layer disposed on the lower electrodes and on the bank; and an upper electrode disposed on the organic material layer. A carrier movement preventing layer preventing movement of carriers from the upper electrode to the organic material layer is formed between the organic material layer and the upper electrode on the bank.

公开(公告)号：US20180175118A1

公开(公告)日：2018-06-21

申请号：US15841679

申请日：2017-12-14

Applicant: Japan Display Inc.

Inventor： Hironori TOYODA ,  Norihisa Maeda

IPC: H01L27/32 ,  H01L51/52

Abstract: 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.

公开(公告)号：US10903443B2

公开(公告)日：2021-01-26

申请号：US16294981

申请日：2019-03-07

Applicant: Japan Display Inc.

Inventor： Norihisa Maeda

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

Abstract: An organic EL display device according to an embodiment of the present invention includes: a substrate; a plurality of pixels located on the substrate; lower electrodes respectively included in the plurality of pixels; a bank defining the plurality of pixels and located between the lower electrodes next to each other; an organic material layer disposed on the lower electrodes and on the bank; and an upper electrode disposed on the organic material layer. A carrier movement preventing layer preventing movement of carriers from the upper electrode to the organic material layer is formed between the organic material layer and the upper electrode on the bank.

公开(公告)号：US10522777B2

公开(公告)日：2019-12-31

申请号：US15730162

申请日：2017-10-11

Applicant: Japan Display Inc.

Inventor： Takahiro Ushikubo ,  Norihisa Maeda

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/52 ,  H01L51/00 ,  H01L29/08 ,  H01L35/24

Abstract: Provided is a display device having a first pixel and a second pixel adjacent to the first pixel. The first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a second electrode over the first EL layer. The second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the second electrode over the second EL layer. The display device further possesses a first cap layer over the second electrode, a second cap layer over the first cap layer and overlapping with the first EL layer, and a third cap layer covering the second cap layer, overlapping with the first EL layer and the second EL layer, and in contact with the first cap layer in a region overlapping with the second EL layer.

公开(公告)号：US10468631B2

公开(公告)日：2019-11-05

申请号：US15783210

申请日：2017-10-13

Applicant: Japan Display Inc.

Inventor： Norihisa Maeda

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

Abstract: Disclosed is a display device including: a substrate; and a first light-emitting element and a second light-emitting element over the substrate and adjacent to each other. The first light-emitting element and the second light-emitting element each possess a first electrode, an EL layer over the first electrode, a second electrode over the EL layer, and an optical adjustment layer over the second electrode. The optical adjustment layer over the first light-emitting element is different in refraction index from the optical adjustment layer over the second light-emitting element. A first material included in the optical adjustment layer may be the same in composition but different in chemical structure between before and after the light irradiation. Alternatively, the first material may be the same in composition but different in phase structure between before and after the light irradiation.

公开(公告)号：US20180108714A1

公开(公告)日：2018-04-19

申请号：US15729790

申请日：2017-10-11

Applicant: Japan Display Inc.

Inventor： Kazuhiro ODAKA ,  Norihisa Maeda

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

CPC classification number: H01L27/3223 ,  G06F1/1601 ,  G06F1/1626 ,  G06F1/1637 ,  H01L27/3276 ,  H01L51/0096 ,  H01L51/0097 ,  H01L51/5237 ,  H01L51/524 ,  H01L2227/323

Abstract: A manufacturing method of a display device according to an embodiment of the present invention includes: the display device including a protection plate having a light transmitting part facing an input or output device, and a display substrate having a display area, a light emitting film forming the step of forming an island-like light emitting film containing a light emitting material, in an area other than the display area in the display substrate; an alignment step of aligning the protection plate and the display substrate with each other; and an attaching step of attaching the protection plate to the display substrate.

公开(公告)号：US10811464B2

公开(公告)日：2020-10-20

申请号：US15841679

申请日：2017-12-14

Applicant: Japan Display Inc.

Inventor： Hironori Toyoda ,  Norihisa Maeda

IPC: H01L27/32 ,  H01L51/52

Abstract: 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.

公开(公告)号：US10541378B2

公开(公告)日：2020-01-21

申请号：US15951305

申请日：2018-04-12

Applicant: Japan Display Inc.

Inventor： Norihisa Maeda

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

Abstract: A display device includes a first electrode, a second electrode adjacent to the first electrode, a barrier wall between the first electrode and the second electrode; a wiring arranged above the barrier wall, and arranged between the first electrode and the second electrode, an organic layer covering the first electrode, the second electrode, the barrier wall and the wiring, and a third electrode covering the organic layer, wherein a width of the wiring is narrower than a length between the first electrode and the second electrode, and a resistance value between the wiring and the third electrode is higher than a resistance value between the first electrode and the third electrode.