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公开(公告)号：US11169416B2
公开(公告)日：2021-11-09
申请号：US16855023
申请日：2020-04-22
Inventor： Hidehiro Sonoda , Chikae Matsui , Noboru Kunimatsu
IPC: G02F1/1337 , G02F1/1339 , G02F1/1333 , G02F1/1343 , G02F1/1368 , G02F1/1335 , G02F1/1362
Abstract: A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2
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公开(公告)号：US10852588B2
公开(公告)日：2020-12-01
申请号：US16199354
申请日：2018-11-26
Inventor： Chikae Matsui , Noboru Kunimatsu , Hidehiro Sonoda
IPC: G02F1/1337 , C09K19/56 , G02F1/1343 , G02F1/1333
Abstract: An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.
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公开(公告)号：US10534225B2
公开(公告)日：2020-01-14
申请号：US15696357
申请日：2017-09-06
Inventor： Noboru Kunimatsu , Chikae Matsui , Hidehiro Sonoda , Yuko Matsumoto , Shoichi Uchino , Masaki Matsumori , Yasushi Tomioka
IPC: C09K19/00 , 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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公开(公告)号：US10481442B2
公开(公告)日：2019-11-19
申请号：US16223201
申请日：2018-12-18
Inventor： Hidehiro Sonoda , Chikae Matsui , Noboru Kunimatsu
IPC: G02F1/1339 , G02F1/1362 , G02F1/1333 , G02F1/1337 , G02F1/1343 , G02F1/1368
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：US10401687B2
公开(公告)日：2019-09-03
申请号：US16226836
申请日：2018-12-20
Inventor： Hidehiro Sonoda , Chikae Matsui , Noboru Kunimatsu
IPC: G02F1/1337 , G02F1/1339 , G02F1/1333 , G02F1/1343 , G02F1/1368 , G02F1/1335 , G02F1/1362
Abstract: A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2
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Patent Agency Ranking
公开(公告)号：US10254590B2
公开(公告)日：2019-04-09
申请号：US15076194
申请日：2016-03-21
Applicant: Japan Display Inc.
Inventor： Noboru Kunimatsu , Toshiyuki Higano , Midori Tsukane , Kazuhiro Nishiyama
IPC: G02F1/1339 , G02F1/1337
Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, a first alignment film, and a sealant, wherein the first alignment film is an optical alignment film, the sealant includes an epoxy resin not having an acrylate skeleton and a resin having an acrylate skeleton, a storage elastic modulus of the sealant is greater than or equal to 1.0×107 Pa and less than or equal to 1.5×109 Pa, and at least a part of the sealant is in contact with the first alignment film.
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公开(公告)号：US09841633B2
公开(公告)日：2017-12-12
申请号：US14922377
申请日：2015-10-26
Applicant: Japan Display Inc.
Inventor： Noboru Kunimatsu , Yuko Matsumoto , Yasushi Tomioka , Masateru Morimoto , Atsuhiro Katayama
IPC: G02F1/1337 , G02F1/1339 , G02F1/13 , G02F1/1335 , G02F1/1341 , G02B5/20 , G02F1/1362 , G02F1/1368 , G02F1/139
CPC classification number: G02F1/133788 , G02B5/208 , G02F1/1303 , G02F1/133509 , G02F1/133512 , G02F1/133514 , G02F1/1337 , G02F1/133707 , G02F1/1339 , G02F1/1341 , G02F1/136209 , G02F1/1368 , G02F1/1393 , G02F2001/13398 , G02F2201/086 , G02F2203/055 , Y10T428/1005
Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.
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公开(公告)号：US20160033825A1
公开(公告)日：2016-02-04
申请号：US14879345
申请日：2015-10-09
Inventor： Chikae MATSUI , Noboru Kunimatsu , Hidehiro SONODA
IPC: G02F1/1337 , C09K19/56 , G02F1/1343
CPC classification number: G02F1/133723 , B32B2457/202 , C09K19/56 , G02F1/133788 , G02F1/134363 , G02F1/13439 , G02F2001/133397 , Y10T428/10 , Y10T428/1018 , Y10T428/1023 , Y10T428/105
Abstract: An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.
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9.发明授权Liquid crystal display device having an alignment film produced via polyamide acid ester and polyamide acid as precursors 有权具有通过聚酰胺酸酯和聚酰胺酸作为前体制备的取向膜的液晶显示装置公开(公告)号：US09170458B2
公开(公告)日：2015-10-27
申请号：US14593354
申请日：2015-01-09
Inventor： Noboru Kunimatsu , Chikae Matsui , Hidehiro Sonoda , Yuko Matsumoto , Shoichi Uchino , Masaki Matsumori , Yasushi Tomioka
IPC: G02F1/141 , G02F1/1337 , G02F1/1343 , G02F1/1368 , H01L27/12
CPC classification number: G02F1/133723 , C09K19/56 , G02F1/133711 , G02F1/133788 , G02F1/134363 , G02F1/1368 , H01L27/1262 , H01L27/1296 , Y10T428/10 , Y10T428/1005
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.
Abstract translation: 液晶显示装置包括具有第一取向膜的TFT基板和具有夹在其间的液晶的第二取向膜的相对基板。 第一和第二取向膜之一包括通过含有环丁烷作为前体的聚酰胺酸酯制备的第一聚酰亚胺和通过聚酰胺酸作为前体制备的第二聚酰亚胺。 聚酰胺酸的极性比聚酰胺酸酯高。 第一和第二取向膜中的一个对光取向有反应。 第一和第二取向膜中的一个的第一侧与液晶相邻，并且第二侧比第一侧更靠近TFT基板和对向基板中的一个。 第一侧包含比第二侧更多的第一聚酰亚胺和更少的第二聚酰亚胺。
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公开(公告)号：US09036120B2
公开(公告)日：2015-05-19
申请号：US14557581
申请日：2014-12-02
Inventor： Hidehiro Sonoda , Chikae Matsui , Noboru Kunimatsu , Yuko Matsumoto
IPC: G02F1/1337 , G02F1/1335 , G02F1/1333
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.
Abstract translation: 液晶显示装置具有液晶显示面板，其具有各自具有排列成点阵列的有源器件，像素电极，公共电极和液晶层的像素。 液晶显示面板具有第一基板，第二基板和设置在第一基板和第二基板之间的液晶层。 第一衬底具有有源器件，像素电极，公共电极和第一取向膜。 第二基板具有第二取向膜。 第一取向膜和第二取向膜分别是通过用光照射光分解型绝缘膜而形成的光取向膜。 第二取向膜的厚度为至少10nm且不大于50nm，并且比第一取向膜薄。
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