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公开(公告)号：US20190179203A1
公开(公告)日：2019-06-13
申请号：US16276796
申请日：2019-02-15
Inventor： Shoichi Uchino , Noboru Kunimatsu , Hidehiro Sonoda , Chikae Matsui , Yuko Matsumoto , Tomio Yaguchi , Toshiki Kaneko , Jun Tanaka
IPC: G02F1/1337
Abstract: Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.
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公开(公告)号：US10185184B2
公开(公告)日：2019-01-22
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: G02F1/1368 , G02F1/1339 , G02F1/1362
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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公开(公告)号：US10185183B2
公开(公告)日：2019-01-22
申请号：US15625060
申请日：2017-06-16
Inventor： Hidehiro Sonoda , Chikae Matsui , Noboru Kunimatsu
IPC: G02F1/1339 , G02F1/1362 , G02F1/1333 , G02F1/1337 , G02F1/1368 , G02F1/1343
Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line.
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公开(公告)号：US10126611B2
公开(公告)日：2018-11-13
申请号：US16014024
申请日：2018-06-21
Applicant: Japan Display Inc.
Inventor： Yasushi Tomioka , Yosuke Hyodo , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1343 , G02F1/1337 , G02F1/1335 , H01L27/12 , G02F1/1368 , G02F1/1333 , G02F1/1362
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：US20180314113A1
公开(公告)日：2018-11-01
申请号：US15949336
申请日：2018-04-10
Applicant: Japan Display Inc.
Inventor： Hidehiro Sonoda , Takenori Hirota , Noboru Kunimatsu , Koichi Igeta
IPC: G02F1/1337 , G02F1/1345 , G02F1/1339 , G02F1/1333 , G02F1/1362
CPC classification number: G02F1/133723 , G02F1/133345 , G02F1/133788 , G02F1/1339 , G02F1/1345 , G02F1/13452 , G02F1/136286 , G02F1/1368 , G02F2001/133368 , G02F2001/134345 , G02F2001/13629 , G02F2201/501
Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a first area and a second area, a second substrate opposing the first substrate but not opposing the second area, a sealing part which adheres the first substrate and the second substrate to each other, a liquid crystal layer located between the first substrate and the second substrate and surrounded by the sealing part, an alignment film disposed on the first substrate so as to be in contact with the liquid crystal layer and a terminal located in the second area and connected to an external circuit. In plan view, the alignment film includes an end located between the sealing part and the terminal.
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Patent Agency Ranking
公开(公告)号：US10031383B2
公开(公告)日：2018-07-24
申请号：US15891707
申请日：2018-02-08
Applicant: Japan Display Inc.
Inventor： Yasushi Tomioka , Yosuke Hyodo , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1343 , G02F1/1333 , G02F1/1368 , G02F1/1362 , G02F1/1335 , G02F1/1337
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：US09927660B2
公开(公告)日：2018-03-27
申请号：US14287353
申请日：2014-05-27
Applicant: Japan Display Inc.
Inventor： Yasuo Imanishi , Yosuke Hyodo , Chikae Matsui , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1337 , G02F1/1343 , C08G73/10
CPC classification number: G02F1/133788 , B32B2457/202 , C08G73/10 , C08G73/1046 , C08G73/105 , C08G73/1078 , G02F1/133723 , G02F1/13378 , G02F1/134363 , Y10T428/1005 , Y10T428/1018 , Y10T428/1023
Abstract: The present invention provides a liquid crystal display device in which even in the case of using a photo-alignment technique, excellent afterimage characteristics can be stably obtained.Provided is a liquid crystal display device including a TFT substrate having an alignment film, an opposed substrate which is arranged to face the TFT substrate and on which an alignment film is formed, and a liquid crystal layer sandwiched between the alignment films, wherein the alignment films are materials that can provide a liquid crystal alignment restraining force by irradiating polarized light, and the ratio of oxygen atoms on the surface of the alignment film is higher than that in the alignment film.
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公开(公告)号：US20170184929A1
公开(公告)日：2017-06-29
申请号：US15389941
申请日：2016-12-23
Applicant: Japan Display Inc.
Inventor： Daiichi SUZUKI , Yoshifumi Saeki , Yukio Tanaka , Noboru Kunimatsu , Hidehiro Sonoda , Masahiro Kosuge
IPC: G02F1/1343 , G02F1/133 , G02F1/1337
CPC classification number: G02F1/134363 , G02F1/13306 , G02F1/1337 , G02F2001/134372 , G02F2201/121 , G02F2201/123
Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel which includes a pixel electrode, a liquid crystal layer and an alignment film, and a driver. The driver drives the pixel electrode at a drive frequency of 1 to 20 Hz. The alignment film has a resistivity of 5×1014 Ω·cm or more.
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公开(公告)号：US09494826B2
公开(公告)日：2016-11-15
申请号：US14982724
申请日：2015-12-29
Inventor： Hidehiro Sonoda , Chikae Matsui , Noboru Kunimatsu , Yuko Matsumoto
IPC: G02F1/1337 , G02F1/1333 , G02F1/1335 , G02F1/1343
CPC classification number: G02F1/1337 , G02F1/133345 , G02F1/133514 , G02F1/133788 , G02F1/134363 , G02F1/13439
Abstract: A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.
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公开(公告)号：US20160327843A1
公开(公告)日：2016-11-10
申请号：US15212873
申请日：2016-07-18
Applicant: Japan Display Inc.
Inventor： Yasushi Tomioka , Yosuke Hyodo , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1362 , G02F1/1333 , G02F1/1335 , 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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