-
公开(公告)号：US20250089466A1
公开(公告)日：2025-03-13
申请号：US18818698
申请日：2024-08-29
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO , Hiroyuki KIMURA , Arichika ISHIDA , Kaichi FUKUDA , Shinichi KAWAMURA , Takanobu TAKENAKA
IPC: H10K59/122 , H10K59/12
Abstract: According to one embodiment, a display device includes a lower electrode, a partition which has a conductive lower portion and an upper portion provided on the lower portion and protruding from a side surface of the lower portion, an organic layer provided on the lower electrode, and an upper electrode provided on the organic layer. The organic layer has a hole injection layer spaced apart from the partition, a first intermediate layer including a first light emitting layer, a first charge generation layer spaced apart from the partition, and a second intermediate layer including a second light emitting layer. The hole injection layer and the first charge generation layer are spaced apart from each other and are further spaced apart from the upper electrode.
-
公开(公告)号：US20230165101A1
公开(公告)日：2023-05-25
申请号：US17990020
申请日：2022-11-18
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO , Daisuke NEMOTO
IPC: H01L29/08
CPC classification number: H01L27/3218
Abstract: A display device incudes a first pixel electrode, a second pixel electrode, an insulating layer covering the first pixel electrode and the second pixel electrode, the insulating layer including a first opening part and a second opening part, a first light-emitting layer, a second light-emitting layer, a counter electrode arranged above the first light-emitting layer and the second light-emitting layer, wherein a light emission start voltage of the second light-emitting layer is lower than a light emission start voltage of the first light-emitting layer, the second light-emitting layer includes a first area arranged at a first end portion adjacent to the first light-emitting layer, the first area having a first dopant concentration, and a second area arranged at a second end portion of the second light-emitting layer opposing the first end portion, the second area having a second dopant concentration higher than the first dopant concentration.
-
公开(公告)号：US20230165034A1
公开(公告)日：2023-05-25
申请号：US17991849
申请日：2022-11-22
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO
CPC classification number: H01L51/5209 , H01L27/3244 , H01L51/5225
Abstract: A display device includes a first pixel electrode, a second pixel electrode, an insulating layer including a first opening part exposing a part of an upper surface of the first pixel electrode, and a second opening part exposing a part of an upper surface of the second pixel electrode, a first common layer arranged above the first pixel electrode, the second pixel electrode and the insulating layer, a first light-emitting layer a second light-emitting layer arranged above the first common layer; an opposite electrode arranged above the first light-emitting layer and the second light-emitting layer, a carrier absorption layer arranged above the insulating layer, the carrier absorption layer being arranged between the first common layer and the second light-emitting layer, and a light emission start voltage of the second light-emitting layer is lower than a light emission start voltage of the first light-emitting layer.
-
公开(公告)号：US20210167314A1
公开(公告)日：2021-06-03
申请号：US17169906
申请日：2021-02-08
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO
Abstract: A display device may include a plurality of pixel electrodes arranged in a matrix along a first direction and a second direction perpendicular to each other. A plurality of light-emitting layers overlap with the respective plurality of pixel electrodes. A plurality of carrier generation layers are separated from one another. Each of the plurality of carrier generation layers continuously overlap with two of the plurality of light-emitting layers. The two are next to each other in a direction oblique to both the first direction and the second direction. A common electrode is opposed to the plurality of pixel electrodes.
-
公开(公告)号：US20160293902A1
公开(公告)日：2016-10-06
申请号：US15091119
申请日：2016-04-05
Applicant: Japan Display Inc.
Inventor： Kengo KATO , Norihisa MAEDA , Takahiro USHIKUBO
CPC classification number: H01L51/5008 , H01L51/5056 , H01L51/5072 , H01L51/508 , H01L51/5088 , H01L51/5092
Abstract: A display device according to an embodiment of the present invention includes an anode electrode layer, a cathode electrode layer, a light emitting layer arranged between the anode electrode layer and the cathode electrode layer, a carrier transport layer and a carrier injection layer, which are arranged at least one of between the light emitting layer and the cathode electrode layer or between the light emitting layer and the anode electrode layer and a mixed layer arranged between the carrier transport layer and the carrier injection layer. The mixed layer is formed of a mixture of a material of the carrier transport layer and a material of the carrier injection layer. The mixed layer is formed so that a percentage of the material of the carrier injection layer in the mixture gradually increases in a direction from the carrier transport layer toward the carrier injection layer.
Abstract translation: 根据本发明的实施例的显示装置包括阳极电极层，阴极电极层，布置在阳极电极层和阴极电极层之间的发光层，载流子传输层和载流子注入层， 布置在发光层和阴极电极层之间或发光层和阳极电极层之间的至少一个以及布置在载流子传输层和载流子注入层之间的混合层。 混合层由载流子传输层的材料和载体注入层的材料的混合物形成。 混合层形成为使得混合物中载流子注入层的材料的比例从载流子传输层向载流子注入层的方向逐渐增加。
-
Patent Agency Ranking
公开(公告)号：US20240074231A1
公开(公告)日：2024-02-29
申请号：US18454090
申请日：2023-08-23
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO
CPC classification number: H10K59/1201 , H10K59/8051 , H10K59/8722 , H10K2102/302
Abstract: According to one embodiment, a display device includes a lower electrode, a rib, a partition including a lower portion which is provided on the rib and is formed of a conductive material, and an upper portion which is provided on the lower portion and protrudes from a side surface of the lower portion, an organic layer provided on the lower electrode, an upper electrode which covers the organic layer and is in contact with the lower portion of the partition, a sealing layer which covers the upper electrode, and a common sealing layer formed of an inorganic insulating material and provided over a broader range than the sealing layer above the sealing layer. The sealing layer is formed of silicon nitride or a transparent oxide.
-
公开(公告)号：US20180294431A1
公开(公告)日：2018-10-11
申请号：US15920598
申请日：2018-03-14
Applicant: Japan Display Inc.
Inventor： Hironori TOYODA , Takahiro USHIKUBO
Abstract: 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.
-
公开(公告)号：US20180090706A1
公开(公告)日：2018-03-29
申请号：US15707171
申请日：2017-09-18
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO
CPC classification number: H01L51/5056 , H01L27/3248 , H01L27/3258 , H01L27/3262 , H01L51/0097 , H01L51/5004 , H01L51/5012 , H01L51/5088 , H01L51/5206 , H01L51/5234 , H01L51/5253 , H01L51/5271 , H01L51/5275 , H01L2227/326 , H01L2251/5315 , H01L2251/5338 , H01L2251/552 , Y02E10/549
Abstract: At the time of removing a flexible organic electroluminescence display device from a support substrate, delamination is prevented from occurring at a laminate structure of an OLED. The organic electroluminescence display device includes a flexible base material, a plurality of organic electroluminescence elements, each comprising a pixel electrode, a reflective layer that is disposed between the base material and the pixel electrode and reflects light, a semitransparent counter electrode that is disposed on a light-emitting surface side with respect to the pixel electrode, and an organic electroluminescence function layer that is a lamination including an organic light-emitting layer and disposed between the pixel electrode and the counter electrode, a transparent electrode laminated on the counter electrode, an organic film laminated on the transparent electrode 80, and a gap 84 generated at a part of an interface between the transparent electrode 80 and the organic film 82.
-
公开(公告)号：US20230389369A1
公开(公告)日：2023-11-30
申请号：US18448983
申请日：2023-08-14
Applicant: Japan Display Inc.
Inventor： Takahiro USHIKUBO
IPC: H10K59/124
CPC classification number: H10K59/124 , H10K59/35
Abstract: A display device includes a first pixel electrode, a second pixel electrode arranged in a first direction and spaced apart from the first pixel electrode, an insulating layer having a first opening exposing at least a portion of a top surface of the first pixel electrode and a second opening exposing at least a portion of a top surface of the second pixel electrode, a first common layer arranged on the first pixel electrode, the second pixel electrode, and the insulating layer, a first light-emitting layer arranged on the first common layer, and overlapping the first pixel electrode, a second light-emitting layer arranged on the first common layer, overlapping the second pixel electrode, and having a lower emission starting voltage than that of the first light-emitting layer, and a counter electrode arranged on the first light-emitting layer and the second light-emitting layer.
-
公开(公告)号：US20230209850A1
公开(公告)日：2023-06-29
申请号：US18086643
申请日：2022-12-22
Applicant: Japan Display Inc.
Inventor： Nobuto MANAGAKI , Takuya NAKAGAWA , Ryosuke MURATA , Masakazu GUNJI , Takahiro USHIKUBO , Masashi TSUBUKU
IPC: H10K50/11
CPC classification number: H01L51/5004 , H01L2251/558
Abstract: According to one embodiment, a display device includes an anode, an organic EL element layer including a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, and a cathode, wherein ΔE2_LUMO is defined as a potential barrier between the electron transport layer and the hole blocking layer, and the light-emitting layer, ΔE2_HOMO is defined as a potential barrier between the hole transport layer and the electron blocking layer, and the light-emitting layer, and each of ΔE2_LUMO and ΔE2_HOMO is 0.1 eV or higher and 0.5 eV or less.
-
-
-
-
-
-
-
-
-
Search Results
20
records
(took 0.013 seconds)
