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公开(公告)号：US11424431B2
公开(公告)日：2022-08-23
申请号：US17138994
申请日：2020-12-31
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo
Abstract: A display device includes a display region arranged above a substrate, a first light emitting element emitting light of a first color, a second light emitting element emitting light of a second color, and a third light emitting element emitting light of a third color arranged in the display region, and a first optical path length adjustment film, a second optical path length adjustment film, and a third optical path length adjustment film in the display region.
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公开(公告)号：US20170279067A1
公开(公告)日：2017-09-28
申请号：US15374186
申请日：2016-12-09
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo , Hironori Toyoda
CPC classification number: H01L51/5092 , H01L27/322 , H01L27/3244 , H01L51/0097 , H01L51/504 , H01L51/5072 , H01L51/5218 , H01L51/5234 , H01L51/5278 , H01L51/5284 , H01L2251/308 , H01L2251/5315 , H01L2251/5338 , H01L2251/558
Abstract: 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.
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公开(公告)号：US10236465B2
公开(公告)日：2019-03-19
申请号：US15707171
申请日：2017-09-18
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo
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.
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公开(公告)号：US10062736B2
公开(公告)日：2018-08-28
申请号：US15420704
申请日：2017-01-31
Applicant: Japan Display Inc.
Inventor： Norihisa Maeda , Takahiro Ushikubo
CPC classification number: H01L27/3206 , H01L27/3213 , H01L27/322 , H01L51/5218 , H01L51/5265 , H01L51/5271
Abstract: A reflecting layer is provided for each of a white pixel PW and a plurality of chromatic color pixels PR, PG and PB. A semitransparent reflecting layer is provided for each of the white pixel PW and the plurality of chromatic color pixels PR, PG and PB. The distance between the reflecting layer and the semitransparent reflecting layer in the white pixel PW is larger than the largest distance among distances between the reflecting layer and the semitransparent reflecting layer in the chromatic color pixels PR, PG, PB. Such display device can suppress increase in manufacturing cost and obtain both merits of optical micro-cavity structure and of the white pixel.
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公开(公告)号：US20210126226A1
公开(公告)日：2021-04-29
申请号：US17138994
申请日：2020-12-31
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo
Abstract: A display device includes a display region arranged above a substrate, a first light emitting element emitting light of a first color, a second light emitting element emitting light of a second color, and a third light emitting element emitting light of a third color arranged in the display region, and a first optical path length adjustment film, a second optical path length adjustment film, and a third optical path length adjustment film in the display region.
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Patent Agency Ranking
公开(公告)号：US10777773B2
公开(公告)日：2020-09-15
申请号：US16730106
申请日：2019-12-30
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo
Abstract: A display device includes a display region arranged above a substrate, a first light emitting element emitting light of a first color, a second light emitting element emitting light of a second color, and a third light emitting element emitting light of a third color arranged in the display region, and a first optical path length adjustment film, a second optical path length adjustment film, and a third optical path length adjustment film in the display region.
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公开(公告)号：US10950816B2
公开(公告)日：2021-03-16
申请号：US15919244
申请日：2018-03-13
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.
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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
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.
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公开(公告)号：US11825674B2
公开(公告)日：2023-11-21
申请号：US17169906
申请日：2021-02-08
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo
IPC: H10K50/13 , H10K50/14 , H10K50/15 , H10K50/16 , H10K50/17 , H10K50/18 , H10K50/818 , H10K50/828 , H10K50/844 , H10K59/12 , H10K59/121 , H10K59/35 , H10K50/19 , H10K102/00
CPC classification number: H10K50/131 , H10K50/14 , H10K50/15 , H10K50/16 , H10K50/17 , H10K50/171 , H10K50/18 , H10K50/818 , H10K50/828 , H10K50/844 , H10K59/12 , H10K59/121 , H10K59/351 , H10K59/353 , H10K50/19 , H10K2102/3026
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.
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公开(公告)号：US10916730B2
公开(公告)日：2021-02-09
申请号：US16911481
申请日：2020-06-25
Applicant: Japan Display Inc.
Inventor： Takahiro Ushikubo
Abstract: A display device includes a display region arranged above a substrate, a first light emitting element emitting light of a first color, a second light emitting element emitting light of a second color, and a third light emitting element emitting light of a third color arranged in the display region, and a first optical path length adjustment film, a second optical path length adjustment film, and a third optical path length adjustment film in the display region.
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