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公开(公告)号：US20190339575A1
公开(公告)日：2019-11-07
申请号：US16511105
申请日：2019-07-15
Inventor： Hidehiro SONODA , Chikae MATSUI , Noboru KUNIMATSU
IPC: G02F1/1337 , G02F1/1339 , G02F1/1362 , G02F1/1335 , G02F1/1343 , G02F1/1368 , G02F1/1333
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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公开(公告)号：US20190171073A1
公开(公告)日：2019-06-06
申请号：US16273586
申请日：2019-02-12
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Yosuke HYODO , Hidehiro SONODA , Noboru KUNIMATSU
IPC: G02F1/1343 , H01L27/12 , G02F1/1337 , G02F1/1335 , G02F1/1362 , G02F1/1368 , G02F1/1333
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：US20180079962A1
公开(公告)日：2018-03-22
申请号：US15826904
申请日：2017-11-30
Inventor： Masaki MATSUMORI , Yasushi TOMIOKA , Noboru KUNIMATSU
IPC: C09K19/56 , G02F1/1337 , C08L33/24 , C08L77/06 , G02F1/137 , G02F1/1343
CPC classification number: C09K19/56 , B32B2457/202 , C08L33/24 , C08L77/06 , G02F1/133723 , G02F1/133788 , G02F1/134363 , G02F1/137 , G02F2001/133749 , G02F2001/13706 , Y10T428/1005 , Y10T428/1018 , Y10T428/1023
Abstract: An IPS type liquid crystal display device superior in mass productivity and improved in image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment by the liquid orientation control film and realizing stable alignment of liquid crystals comprises: a pair of substrates, at least one which is transparent; a liquid crystal layer disposed between the pair of substrates; a group of electrodes formed on at least one of the pair of substrates to apply an electric field to the liquid crystal layer; plural active elements connected to the group of electrodes; and an orientation control film disposed on at least one of the pair of substrates, wherein said orientation control film is made of a photosensitive polyimide and a polyamide acid ester and is given orientation control ability by being irradiated with substantially linearly polarized light.
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公开(公告)号：US20180022874A1
公开(公告)日：2018-01-25
申请号：US15647322
申请日：2017-07-12
Applicant: Japan Display Inc.
Inventor： Hidehiro SONODA , Takenori HIROTA , Yasushi TOMIOKA , Noboru KUNIMATSU
IPC: C08G73/10 , G02F1/1337
CPC classification number: C08G73/1067 , C08G73/1014 , C08G73/1071 , C08G73/1078 , C09D179/08 , G02F1/133711 , G02F1/133723 , G02F1/133788 , G02F2001/133354 , G02F2001/133397 , C08L79/08
Abstract: According to one embodiment, a varnish for a photo alignment film includes an imidization promotor and a first polyamic acid-based compound in an organic solvent. The first polyamic acid-based compound is a polyamic acid or a polyamic acid ester. The imidization promotor has skeleton containing no primary amino group and no secondary amino group. The first polyamic acid-based compound has terminal skeletons containing no primary amino group.
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公开(公告)号：US20170023814A1
公开(公告)日：2017-01-26
申请号：US15284864
申请日：2016-10-04
Applicant: Japan Display Inc.
Inventor： Noboru KUNIMATSU , Masaki MATSUMORI , Hidehiro SONODA , Yasushi TOMIOKA , Toshiki KANEKO
IPC: G02F1/1337 , G02F1/1339 , G02F1/1368
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.
Abstract translation: 本发明防止了使用光取向的IPS方法的液晶显示装置中的柱状间隔物引起的取向膜的刮削。 在对置基板上形成的柱状间隔件与TFT基板接触的部分，形成比像素电极高的底座。 当在像素电极和底座上施加双层结构的取向膜时，底座上的取向膜的厚度减小了平整效应。 当在该状态下进行光对准时，在底座上的光降解的上取向膜消失，并且残留有机械强度较高的下取向膜。 结果，可以防止取向膜的刮削。
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Patent Agency Ranking
公开(公告)号：US20160131928A1
公开(公告)日：2016-05-12
申请号：US14982724
申请日：2015-12-29
Inventor： Hidehiro SONODA , Chikae MATSUI , Noboru KUNIMATSU , Yuko MATSUMOTO
IPC: G02F1/1337 , G02F1/1333 , G02F1/1343
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：US20150109569A1
公开(公告)日：2015-04-23
申请号：US14519515
申请日：2014-10-21
Applicant: Japan Display Inc.
Inventor： Noboru KUNIMATSU , Yasushi TOMIOKA , Toshiyuki HIGANO , Emi HIGANO , Midori TSUKANE , Hirofumi WAKEMOTO , Kazuhiro NISHIYAMA
IPC: G02F1/1339 , G02F1/1337
CPC classification number: G02F1/1339 , G02F1/133788
Abstract: An object of the present invention is to realize a liquid crystal display device having a photo-aligned alignment film in which the alignment film is overlapped with a seal material to downsize a frame area, and the reliability of a seal portion can be secured. A first alignment film and a second alignment film are overlapped with a seal material, the first alignment film and the second alignment film are made of material containing 0.5 wt % or larger and 2 wt % or smaller of an amine-system silane coupling agent, and the shrinkage ratio and the storage elastic modulus of the seal material evaluated using the modulus of volume change by a specific gravity cup method are 5.1% or smaller and 9.2 Pa or smaller, respectively. Accordingly, a frame area can be downsized, and the reliability of a seal portion can be maintained.
Abstract translation: 本发明的目的是实现一种具有光取向膜的液晶显示装置，其中取向膜与密封材料重叠以减小框架区域的尺寸，并且可以确保密封部分的可靠性。 第一取向膜和第二取向膜与密封材料重叠，第一取向膜和第二取向膜由含有0.5重量％以上且2体积％以下的胺系硅烷偶联剂的材料构成， 并且使用体积变化率通过比重杯法评价的密封材料的收缩率和储能弹性模量分别为5.1％以下且9.2Pa以下。 因此，可以缩小框架面积，并且可以保持密封部的可靠性。
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公开(公告)号：US20140347585A1
公开(公告)日：2014-11-27
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 , H01L27/12 , G02F1/1343
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.
Abstract translation: 本发明提供一种液晶显示装置，其中即使在使用光取向技术的情况下，也可以稳定地获得优异的残留图像特性。 本发明提供一种液晶显示装置，其具有：具有取向膜的TFT基板，与TFT基板相对配置并配置有取向膜的相对基板以及夹在取向膜之间的液晶层， 膜是通过照射偏振光可以提供液晶取向抑制力的材料，并且取向膜表面上的氧原子比高于取向膜中的氧原子比。
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公开(公告)号：US20230020723A1
公开(公告)日：2023-01-19
申请号：US17946602
申请日：2022-09-16
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Yosuke HYODO , Hidehiro SONODA , Noboru KUNIMATSU
IPC: G02F1/1343 , G02F1/1362 , G02F1/1333 , G02F1/1335 , G02F1/1368 , H01L27/12 , G02F1/1337
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 to 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 dimeter 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：US20210072603A1
公开(公告)日：2021-03-11
申请号：US16953997
申请日：2020-11-20
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Yosuke HYODO , Hidehiro SONODA , Noboru KUNIMATSU
IPC: G02F1/1343 , G02F1/1362 , G02F1/1333 , G02F1/1335 , G02F1/1368 , H01L27/12 , G02F1/1337
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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