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公开(公告)号：US20250044654A1
公开(公告)日：2025-02-06
申请号：US18923818
申请日：2024-10-23
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Toshimasa ISHIGAKI , Hidehiro SONODA , Sumito UETA
IPC: G02F1/1362 , G02F1/1333 , G02F1/1335 , G02F1/1337 , G02F1/1368
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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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：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：US20170269405A1
公开(公告)日：2017-09-21
申请号：US15613561
申请日：2017-06-05
Applicant: Japan Display Inc.
Inventor： Takenori HIROTA , Yasuhiro KANAYA , Hidehiro SONODA , Toshiki KANEKO
IPC: G02F1/1339
CPC classification number: G02F1/1339 , G02F1/133345 , G02F2001/133388
Abstract: a reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film.
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Patent Agency Ranking
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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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：US20150346556A1
公开(公告)日：2015-12-03
申请号：US14720381
申请日：2015-05-22
Applicant: Japan Display Inc.
Inventor： Takenori HIROTA , Yasuhiro KANAYA , Hidehiro SONODA , Toshiki KANEKO
IPC: G02F1/1337 , G02F1/1368 , G02F1/1339
CPC classification number: G02F1/1339 , G02F1/133345 , G02F2001/133388
Abstract: A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film.
Abstract translation: 通过以下结构可以提高液晶显示装置的密封部的可靠性。 液晶显示装置包括：TFT基板，包括显示区域和端子部分，并且具有形成在有机钝化膜上的无机绝缘膜和形成在无机绝缘膜上的取向膜; 相对基板，TFT基板和对置基板通过形成在围绕显示区域的密封部分处的密封材料接合在一起; 并将液晶密封在里面。 在密封部分，在无机绝缘膜和取向膜之间形成透明导电氧化膜。 透明导电氧化物膜存在于TFT基板的边缘内部，因此TFT基板的边缘没有透明导电氧化物膜。
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公开(公告)号：US20150219969A1
公开(公告)日：2015-08-06
申请号：US14689731
申请日：2015-04-17
Inventor： Hidehiro SONODA , Chickae 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：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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