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公开(公告)号：US20240407228A1
公开(公告)日：2024-12-05
申请号：US18669573
申请日：2024-05-21
Applicant: Japan Display Inc.
Inventor： Noriyuki HIRATA , Hirofumi MIZUKOSHI , Hiraaki KOKAME
Abstract: According to one embodiment, a manufacturing method of a display device includes preparing a processing substrate by forming a lower electrode, forming an inorganic insulating layer, and forming a partition including a lower portion and an upper portion, forming an organic layer including a light emitting layer, forming an upper electrode, forming a cap layer, forming a first sealing layer, and forming a resin layer. The process of forming the organic layer, the upper electrode and the cap layer is an evaporation process using the partition as a mask in a vacuum environment. The process of forming the resin layer includes a process of applying a resinous material in an air atmosphere.
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公开(公告)号：US20230413612A1
公开(公告)日：2023-12-21
申请号：US18334411
申请日：2023-06-14
Applicant: Japan Display Inc.
Inventor： Yuko MATSUMOTO , Kimitaka OHATA , Hiraaki KOKAME
IPC: H10K59/122 , H10K59/12 , H10K59/35 , H10K59/80
CPC classification number: H10K59/122 , H10K59/1201 , H10K59/352 , H10K59/873
Abstract: According to one embodiment, a display device includes a rib including first to third pixel apertures, a partition which includes a lower portion on the rib and an upper portion protruding from a side surface of the lower portion, first to third display elements overlapping the first to third pixel apertures, first to third sealing layers including first to third portions on the upper portion. At least two of a first width of an area in which the first portion overlaps the upper portion, a second width of an area in which the second portion overlaps the upper portion and a third width of an area in which the third portion overlaps the upper portion are different from each other.
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公开(公告)号：US20210134919A1
公开(公告)日：2021-05-06
申请号：US17148680
申请日：2021-01-14
Applicant: Japan Display Inc.
Inventor： Hiraaki KOKAME , Akinori KAMIYA
Abstract: A display device according to an embodiment of the present invention includes: a substrate, a plurality of pixels on the substrate, a first inorganic insulating layer that covers the plurality of pixels, a conductive layer on the first inorganic insulating layer, and a second inorganic insulating layer that on the conductive layer, the conductive layer being between the first inorganic insulating layer and the second inorganic insulating layer, wherein the first inorganic insulating layer includes an area that is in direct contact with the second inorganic insulating layer, and all of the conductive layer is covered with the first inorganic insulating layer and the second inorganic insulating layer.
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公开(公告)号：US20170279073A1
公开(公告)日：2017-09-28
申请号：US15372598
申请日：2016-12-08
Applicant: Japan Display Inc.
Inventor： Tetsuya NAGATA , Hiraaki KOKAME
CPC classification number: H01L51/5246 , H01L51/0097 , H01L51/5237 , H01L51/5253 , H01L2251/5338
Abstract: A display device is disclosed including an array substrate including a plurality of pixels arranged in a display region, the display region including a planar region and a curved region, and a sealing layer covering the plurality of pixels and arranged across the display region, wherein the sealing layer includes a first organic insulation layer and a second organic insulation layer, a film thickness of the first organic insulation layer is more than a film thickness of the second organic insulation layer in the planar region, a film thickness of the second organic insulation layer is more than a film thickness of the first organic insulation layer in the curved region, and a hardness of the second organic insulation layer is lower than a hardness of the first organic insulation layer.
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公开(公告)号：US20210111369A1
公开(公告)日：2021-04-15
申请号：US17128812
申请日：2020-12-21
Applicant: Japan Display Inc.
Inventor： Yukio MATSUMOTO , Hiraaki KOKAME
Abstract: An organic EL display device according to an embodiment of the present invention includes a substrate on which a display region including a plurality of pixels including an organic EL layer and an external region that surrounds the display region are formed, at least one separating wall that is formed at a part of the external region on the substrate, and an organic layer that covers at least a part of the display region, includes an organic material, and is formed on a display region side of the at least one separating wall. A wall surface of the display region side of the at least one separating wall includes an inclined surface that is inclined toward the display region side as it is extended away from the substrate.
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Patent Agency Ranking
公开(公告)号：US20200020882A1
公开(公告)日：2020-01-16
申请号：US16582283
申请日：2019-09-25
Applicant: Japan Display Inc.
Inventor： Hiraaki KOKAME
Abstract: A display device according to the present invention includes a display region arranged with a plurality of pixels, and a sealing layer covering the display region, wherein the sealing layer includes an insulation layer having a density pattern, the density pattern is a pattern including a low density region and a high density region, the low density region has the insulation layer with a lower density than an average density within the display region of the insulation layer, and the high density region has the insulation layer with a higher density than an average density within the display region of the insulation layer.
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公开(公告)号：US20180090708A1
公开(公告)日：2018-03-29
申请号：US15681873
申请日：2017-08-21
Applicant: Japan Display Inc.
Inventor： Hiraaki KOKAME
CPC classification number: H01L51/524 , H01L27/1203 , H01L27/124 , H01L27/3244 , H01L51/0002 , H01L51/5012 , H01L51/5253
Abstract: A display device includes a substrate including a display region, a plurality of pixels arranged in the display region, and a sealing layer covering at least the entire display region. The sealing layer includes a first inorganic insulating layer, a first organic insulating layer arranged above the first inorganic insulating layer, a second organic insulating layer arranged above the first organic insulating layer and having a higher moisture permeability than the first organic insulating layer, and a second inorganic insulating layer arranged above the second organic insulating layer.
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公开(公告)号：US20170365809A1
公开(公告)日：2017-12-21
申请号：US15475688
申请日：2017-03-31
Applicant: Japan Display Inc.
Inventor： Yukio MATSUMOTO , Hiraaki KOKAME
CPC classification number: H01L51/5246 , H01L51/5203 , H01L51/5237 , H01L51/56
Abstract: An organic EL display device according to an embodiment of the present invention includes a substrate on which a display region including a plurality of pixels including an organic EL layer and an external region that surrounds the display region are formed, at least one separating wall that is formed at a part of the external region on the substrate, and an organic layer that covers at least a part of the display region, includes an organic material, and is formed on a display region side of the at least one separating wall. A wall surface of the display region side of the at least one separating wall includes an inclined surface that is inclined toward the display region side as it is extended away from the substrate.
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公开(公告)号：US20230225180A1
公开(公告)日：2023-07-13
申请号：US18151486
申请日：2023-01-09
Applicant: Japan Display Inc.
Inventor： Hiraaki KOKAME , Toshifumi MIMURA , Kaichi FUKUDA
CPC classification number: H10K71/231 , H10K59/1201 , H10K2102/351
Abstract: According to one embodiment, a method of manufacturing a display device includes preparing a processing substrate with a lower electrode, a rib, and a partition including a lower portion and an upper portion, forming a first organic layer and a second organic layer spaced apart from the first organic layer, forming a first upper electrode and a second upper electrode spaced apart from the first upper electrode, forming a sealing layer located on the first upper electrode and the second upper electrode, forming a resist covering a part of the sealing layer, performing anisotropic dry etching using the resist as a mask, performing isotropic dry etching using the resist as a mask, and removing the sealing layer exposed from the resist.
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公开(公告)号：US20220199955A1
公开(公告)日：2022-06-23
申请号：US17691179
申请日：2022-03-10
Applicant: Japan Display Inc.
Inventor： Hiraaki KOKAME
Abstract: An oxidation protective film is continuously provided from the display area to the frame area so as to be in contact with the upper electrode. A first inorganic sealing film is provided on the substrate so as to cover the upper electrode and the oxidation protective film. An organic sealing film is provided on the first inorganic sealing film. A second inorganic sealing film is provided on the organic sealing film and is in direct contact with the first inorganic sealing film in a periphery of the organic sealing film. The oxidation protective film covers at least the contact area of the upper electrode in the frame area and is not provided in the periphery in which the first inorganic sealing film and the second inorganic sealing film are in direct contact with each other.
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