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公开(公告)号：US20240074264A1
公开(公告)日：2024-02-29
申请号：US18503242
申请日：2023-11-07
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA
IPC: H10K59/131
CPC classification number: H10K59/131 , H10K59/122
Abstract: According to one embodiment, a display device including, a substrate including a first area including a display area, a second area including a mount area, and a third area located between the first area and the second area, a first inorganic insulating layer provided on the substrate in the first area and the second area, a line provided on the first inorganic insulating layer and extending across the first area, the second area, and the third area, and, a second inorganic insulating layer provided on the line, the second inorganic insulating layer extending to an area overlaid on at least the first inorganic insulating layer.
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公开(公告)号：US20230298379A1
公开(公告)日：2023-09-21
申请号：US18119931
申请日：2023-03-10
Applicant: Japan Display Inc.
Inventor： Kazuki MATSUNAGA , Shigesumi ARAKI , Yasushi TOMIOKA
IPC: G06V40/13
CPC classification number: G06V40/1318 , G06V40/1324
Abstract: An optical sensor capable of obtaining a plurality of types of information by a plurality of wavelengths in a short time is provided. The optical sensor includes a light receiving unit that includes a first and second pinhole layer that includes a plurality of pinholes, a first and second transmission layer, and a plurality of microlenses belonging to a first and second group, the microlenses being disposed at positions respectively overlapping the plurality of pixels on the second transmission layer. Either of the plurality of microlenses belonging to the first or second group is a first wavelength selection unit that transmits light of a first wavelength. At least one of the other of the plurality of microlenses belonging to the first and second group, the first transmission layer, and the second transmission layer is a second wavelength selection unit that transmits light of a second wavelength.
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公开(公告)号：US20230170367A1
公开(公告)日：2023-06-01
申请号：US18070565
申请日：2022-11-29
Applicant: Japan Display Inc.
Inventor： Kazuki MATSUNAGA , Shigesumi ARAKI , Yasushi TOMIOKA
IPC: H01L27/146 , G02B5/28
CPC classification number: H01L27/14625 , G02B5/28 , G02B2207/123
Abstract: An optical sensor includes a light receiving part including a plurality of pixels and receiving light from a measuring object, the pixels being disposed in a matrix along a first direction and a second direction, and a louver film in which a first layer and a second layer are laminated, the first layer including a transmissive portion that transmits light of a predetermined wavelength band and a light shielding portion that spiels light, the transmissive portion and the light shielding portion being alternately disposed along the first direction, the second layer including the transmissive portion and the light shielding portion that are alternately disposed along the second direction. The transmissive portion included in one of the first layer and the second layer includes a first wavelength selecting unit that transmits light of a first wavelength band and a second wavelength selecting unit that transmits light of a second wavelength band.
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公开(公告)号：US20220308402A1
公开(公告)日：2022-09-29
申请号：US17655676
申请日：2022-03-21
Applicant: Japan Display Inc.
Inventor： Shinichiro OKA , Yasushi TOMIOKA , Koichi IGETA , Junji KOBASHI
IPC: G02F1/1337 , G02F1/1335
Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, a plurality of structures, a first liquid crystal layer including a plurality of liquid crystal molecules having alignment directions fixed, and a second liquid crystal layer including a plurality of liquid crystal molecules having alignment directions fixed. In an area overlapping a groove, a first director of the first liquid crystal layer extends along the groove, and a second director of the second liquid crystal layer is uniformly aligned with the first director of the second surface side, on the third surface side, and turns in planar view.
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公开(公告)号：US20220004061A1
公开(公告)日：2022-01-06
申请号：US17478348
申请日：2021-09-17
Inventor： Noboru KUNIMATSU , Chikae MATSUI , Hidehiro SONODA , Yuko MATSUMOTO , Shoichi UCHINO , Masaki MATSUMORI , Yasushi TOMIOKA
IPC: G02F1/1337 , G02F1/1343 , G02F1/1368 , H01L27/12 , C09K19/56
Abstract: A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.
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Patent Agency Ranking
公开(公告)号：US20210041748A1
公开(公告)日：2021-02-11
申请号：US17077412
申请日：2020-10-22
Applicant: Japan Display Inc.
Inventor： Noboru KUNIMATSU , Masaki MATSUMORI , Hidehiro SONODA , Yasushi TOMIOKA , Toshiki KANEKO
IPC: G02F1/1337 , G02F1/1339 , G02F1/1333 , G02F1/1362 , G02F1/1368 , G02F1/1343
Abstract: The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.
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公开(公告)号：US20200305294A1
公开(公告)日：2020-09-24
申请号：US16897301
申请日：2020-06-10
Applicant: Japan Display Inc.
Inventor： Hajime YAMAGUCHI , Yasushi TOMIOKA
Abstract: According to one embodiment, a display device includes a first submodule having a display panel, a second submodule having a cover member located on the display panel, and a first decoupling layer located between the first submodule and the second submodule, and each of the first submodule and the second submodule has a single neutral plane.
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公开(公告)号：US20200303490A1
公开(公告)日：2020-09-24
申请号：US16898559
申请日：2020-06-11
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Hajime Yamaguchi
Abstract: According to one embodiment, a display device includes a substrate, a first organic film, wiring lines, a second organic film, and a first inorganic film. The substrate has a first area including a display area, a second area including a mounting area, and a third area located between the first area and the second area. The first organic film is disposed on the substrate in the third area. The wiring lines are arranged at intervals in a first direction on the first organic film and extend in a second direction crossing the first direction. The second organic film covers the first organic film and the wiring lines in the third area. The first inorganic film is disposed on the second organic film.
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公开(公告)号：US20190227367A1
公开(公告)日：2019-07-25
申请号：US16374802
申请日：2019-04-04
Applicant: Japan Display Inc
Inventor： Yasushi TOMIOKA , Hajime YAMAGUCHI
IPC: G02F1/1333 , H01L51/52 , G02F1/1362 , G02F1/1345 , H01L27/32
CPC classification number: G02F1/133305 , G02F1/13452 , G02F1/136227 , G02F1/136286 , H01L27/3276 , H01L51/5012 , H01L51/5234 , H01L2251/5338
Abstract: According to one embodiment, a display device includes a first substrate and an external circuit, the first substrate including a first area, a second area, and wirings, the first area including a display area in which pixels are arranged the external circuit being mounted on the second area. The wirings are electrically connected to the external circuit, provided in the first area and the second area, and arranged in the first direction. At least one of the wirings is inclined with respect to a second direction orthogonal to the first direction in a first portion of the second area. The first substrate is bent in the first portion.
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公开(公告)号：US20190064619A1
公开(公告)日：2019-02-28
申请号：US16174438
申请日：2018-10-30
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Toshimasa ISHIGAKI , Hidehiro SONODA , Sumito UETA
IPC: G02F1/1362 , G02F1/1368 , G02F1/1337 , G02F1/1333 , G02F1/1335
Abstract: A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.
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