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公开(公告)号：US20230375764A1
公开(公告)日：2023-11-23
申请号：US18319000
申请日：2023-05-17
Applicant: Japan Display Inc. , Osaka University
Inventor： Koichi IGETA , Shinichiro OKA , Yasushi TOMIOKA , Hiroyuki YOSHIDA
CPC classification number: G02B5/3016 , G02B5/1833 , G02B5/1857 , C09K19/36 , C09K19/54
Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate including a main surface, an alignment film disposed on the main surface, and a liquid crystal layer overlapping the alignment film and including a cholesteric liquid crystal including liquid crystal molecules stacked helically and an additive exhibiting a liquid crystalline property. In the liquid crystal layer, a reflective surface along which alignment directions of the liquid crystal molecules are identical is inclined with respect to the main surface.
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公开(公告)号：US20230258849A1
公开(公告)日：2023-08-17
申请号：US18304810
申请日：2023-04-21
Applicant: Japan Display Inc. , OSAKA UNIVERSITY
Inventor： Shinichiro OKA , Yasushi TOMIOKA , Junji KOBASHI , Hiroyuki YOSHIDA
CPC classification number: G02B5/1833 , G02B5/3016 , G02B5/208
Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, a first alignment film, a second alignment film opposite to the first alignment film, a spacer between the substrate and the second alignment film, and a liquid crystal layer in contact with the first alignment film and the second alignment film. The liquid crystal layer includes liquid crystal molecules including a plurality of first liquid crystal molecules arranged along a boundary surface with the first alignment film and a plurality of second liquid crystal molecules arranged along a boundary surface with the second alignment film, and is cured in a state where alignment directions of the liquid crystal molecules are fixed.
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公开(公告)号：US20220214215A1
公开(公告)日：2022-07-07
申请号：US17656281
申请日：2022-03-24
Applicant: Japan Display Inc.
Inventor： Toshiyuki HIGANO , Yasushi TOMIOKA , Kazuhiro NISHIYAMA
Abstract: An optical sensor includes at least one interferometer having a pair of semi-transparent mirrors spaced apart and oppositely arranged, and at least one position of the pair of semi-transparent mirrors can be displaced, at least one collimating element overlapping the at least one interferometer, and at least one photoelectric conversion element having sensitivity in the visible and near infrared light bands and receiving light passing through the interferometer and the collimating element.
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公开(公告)号：US20220151086A1
公开(公告)日：2022-05-12
申请号：US17585559
申请日：2022-01-27
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：US20190179201A1
公开(公告)日：2019-06-13
申请号：US16239932
申请日：2019-01-04
Applicant: Japan Display Inc.
Inventor： Noboru KUNIMATSU , Masaki MATSUMORI , Hidehiro SONODA , Yasushi TOMIOKA , Toshiki KANEKO
IPC: G02F1/1337 , G02F1/1339 , G02F1/1368 , G02F1/1343
CPC classification number: G02F1/133723 , G02F1/1333 , G02F1/133345 , G02F1/1337 , G02F1/13378 , G02F1/133788 , G02F1/1339 , G02F1/13394 , G02F1/134363 , G02F1/136286 , G02F1/1368
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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Patent Agency Ranking
公开(公告)号：US20190107746A1
公开(公告)日：2019-04-11
申请号：US16212765
申请日：2018-12-07
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Noboru KUNIMATSU , Yosuke HYODO , Toshiki KANEKO , Yuko MATSUMOTO
IPC: G02F1/1339 , G02F1/1362 , G02F1/1368
CPC classification number: G02F1/13394 , G02F1/1339 , G02F1/136286 , G02F1/1368 , G02F2001/13396 , G02F2001/13398
Abstract: A liquid crystal display device includes: a TFT substrate having gate lines and data lines arranged thereon, the gate lines extending in a first direction and arranged in a second direction, the data lines extending in the second direction and arranged in the first direction; a counter substrate having a black matrix and a color filter; and liquid crystals put between the TFT substrate and the counter substrate. Columnar spacers are formed on the counter substrate. Pedestals are formed on portions of the TFT substrate, the portions corresponding to the columnar spacers. A convex portion and a concave portion are present at the top end of the columnar spacer. The pedestal is formed corresponding to the concave portion. The concave portion is opened at the ends thereof and connected to the lateral side of the columnar spacer.
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公开(公告)号：US20180081212A1
公开(公告)日：2018-03-22
申请号：US15826366
申请日：2017-11-29
Applicant: Japan Display Inc.
Inventor： Noboru KUNIMATSU , Masaki MATSUMORI , Hidehiro SONODA , Yasushi TOMIOKA , Toshiki KANEKO
IPC: G02F1/1337 , G02F1/1368 , G02F1/1362 , G02F1/1339 , G02F1/1333
CPC classification number: G02F1/1337 , G02F1/1333 , G02F1/133345 , G02F1/133723 , G02F1/13378 , G02F1/133788 , G02F1/1339 , G02F1/13394 , G02F1/136286 , G02F1/1368
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：US20170371194A1
公开(公告)日：2017-12-28
申请号：US15628972
申请日：2017-06-21
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Hajime YAMAGUCHI
IPC: G02F1/1333 , H01L27/12 , H01L51/00 , H01L23/498 , H01L27/32 , H01L51/52
CPC classification number: G02F1/133305 , H01L23/4985 , H01L27/1218 , H01L27/124 , H01L27/3276 , H01L51/0097 , H01L51/5253 , H01L2251/5338 , H01L2251/558 , H05K1/0281 , H05K1/147 , H05K1/189 , H05K3/323 , H05K3/361 , H05K2201/10128 , Y02E10/549
Abstract: According to one embodiment, a display device includes a first substrate including a first area and a second area, the first area including a display area where pixels are arranged, and the second area being adjacent to the first area and where wirings are arranged, wherein the wirings are covered with a protection layer, the second area includes a peripheral area and a central area in an arrangement direction of the wirings, and a thickness of at least one of the first substrate and the protection layer varies between the peripheral area and the central area.
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公开(公告)号：US20170363920A1
公开(公告)日：2017-12-21
申请号：US15693564
申请日：2017-09-01
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Yosuke HYODO , Hidehiro SONODA , Noboru KUNIMATSU
IPC: G02F1/1343 , G02F1/1335 , G02F1/1362 , G02F1/1333 , G02F1/1337 , G02F1/1368
CPC classification number: G02F1/134363 , G02F1/133345 , G02F1/133512 , G02F1/133514 , G02F1/133788 , G02F1/136227 , G02F1/1368 , G02F2202/02 , H01L27/1218
Abstract: In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.
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公开(公告)号：US20170322442A1
公开(公告)日：2017-11-09
申请号：US15660254
申请日：2017-07-26
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Noboru KUNIMATSU , Yosuke HYODO , Toshiki KANEKO , Yuko MATSUMOTO
IPC: G02F1/1339 , G02F1/1368 , G02F1/1362
CPC classification number: G02F1/13394 , G02F1/1339 , G02F1/136286 , G02F1/1368 , G02F2001/13396 , G02F2001/13398
Abstract: A liquid crystal display device includes: a TFT substrate having gate lines and data lines arranged thereon, the gate lines extending in a first direction and arranged in a second direction, the data lines extending in the second direction and arranged in the first direction; a counter substrate having a black matrix and a color filter; and liquid crystals put between the TFT substrate and the counter substrate. Columnar spacers are fainted on the counter substrate. Pedestals are formed on portions of the TFT substrate, the portions corresponding to the columnar spacers. A convex portion and a concave portion are present at the top end of the columnar spacer. The pedestal is formed corresponding to the concave portion. The concave portion is opened at the ends thereof and connected to the lateral side of the columnar spacer.
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