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公开(公告)号：US20170146872A1
公开(公告)日：2017-05-25
申请号：US15401795
申请日：2017-01-09
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Yosuke HYODO , Hidehiro SONODA , Noboru KUNIMATSU
IPC: G02F1/1343 , G02F1/1337 , G02F1/1335 , G02F1/1333 , G02F1/1368 , G02F1/1362
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：US20150160521A1
公开(公告)日：2015-06-11
申请号：US14564129
申请日：2014-12-09
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Toshimasa ISHIGAKI , Hidehiro SONODA , Sumito UETA
IPC: G02F1/1343 , G02F1/1335
CPC classification number: G02F1/136227 , G02F1/133345 , G02F1/133512 , G02F1/1337 , G02F1/133707 , G02F1/1368 , G02F2001/133357 , G02F2201/121 , G02F2201/123
Abstract: To prevent a phenomenon that an alignment film material is difficult to flow into the through-hole where a diameter of a through-hole for connecting between a pixel electrode and a source electrode is reduced.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.
Abstract translation: 为了防止取向膜材料难以流入用于连接像素电极和源极之间的通孔的直径减小的通孔的现象。 一种液晶显示装置，包括具有各自包括形成在有机钝化膜上的公共电极的像素的TFT基板，形成为覆盖公共电极的层间绝缘膜，形成在层间绝缘膜上的狭缝的像素电极， 在有机钝化膜和层间绝缘膜中形成的通孔以及通过该通孔向像素电极导电的源电极。 通孔深度D / 2处的锥角等于或大于50度。 像素电极覆盖通孔的侧壁的一部分，但不覆盖通孔的侧壁的剩余部分。 该结构使得取向膜材料流入通孔，从而解决了通孔附近的取向膜的厚度不均匀性。
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23.发明申请公开(公告)号：US20150015840A1
公开(公告)日：2015-01-15
申请号：US14325703
申请日：2014-07-08
Applicant: Japan Display Inc.
Inventor： Yasuo IMANISHI , Yosuke HYODO , Chikae MATSUI , Hidehiro SONODA , Noboru KUNIMATSU
IPC: G02F1/1337 , G02F1/1339
CPC classification number: G02F1/133723 , G02F1/133711 , G02F1/133788 , G02F1/1339 , G02F1/13394
Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate on each of which an alignment film is formed and a liquid crystal interposed and held between the alignment films of the TFT and counter substrate, wherein the alignment film is made of a material capable of applying liquid crystal alignment regulation force by polarized light irradiation, a convex structure is formed on the TFT substrate or the counter substrate, and the alignment film is applied the liquid crystal alignment regulation force to a surface of a region ranging from the periphery of the convex structure to the vicinity of an inclined part of the convex structure and is not applied the liquid crystal alignment regulation force to a surface of the inclined part of the convex structure.
Abstract translation: 液晶显示装置包括TFT基板和对置基板，每个基板上形成有取向膜，液晶插入并保持在TFT和对向基板的取向膜之间，其中取向膜由能够 通过偏振光照射施加液晶取向调节力，在TFT基板或对置基板上形成凸起结构，并且将取向膜作为液晶取向调节力施加到从 凸结构到凸结构的倾斜部分附近，并且不将液晶取向调节力施加到凸结构的倾斜部分的表面。
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公开(公告)号：US20140104554A1
公开(公告)日：2014-04-17
申请号：US14107028
申请日：2013-12-16
Inventor： Hidehiro SONODA , Chikae MATSUI , Noboru KUNIMATSU , Yuko MATSUMOTO
IPC: G02F1/1337
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。 第一基板具有有源器件，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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公开(公告)号：US20240184174A1
公开(公告)日：2024-06-06
申请号：US18441133
申请日：2024-02-14
Applicant: Japan Display Inc.
Inventor： Yasushi TOMIOKA , Toshimasa ISHIGAKI , Hidehiro SONODA , Sumito UETA
IPC: G02F1/1362 , G02F1/1333 , G02F1/1335 , G02F1/1337 , G02F1/1368
CPC classification number: G02F1/136227 , G02F1/133345 , G02F1/133512 , G02F1/1337 , G02F1/133707 , G02F1/1368 , G02F1/133357 , G02F2201/121 , G02F2201/123
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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Patent Agency Ranking
公开(公告)号：US20220326577A1
公开(公告)日：2022-10-13
申请号：US17841712
申请日：2022-06-16
Inventor： Shoichi UCHINO , Noboru KUNIMATSU , Hidehiro SONODA , Chikae MATSUI , Yuko MATSUMOTO , Tomio YAGUCHI , Toshiki KANEKO , Jun TANAKA
IPC: G02F1/1337 , G03F7/30 , G03F7/36
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：US20200050041A1
公开(公告)日：2020-02-13
申请号：US16655653
申请日：2019-10-17
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：US20200019021A1
公开(公告)日：2020-01-16
申请号：US16579973
申请日：2019-09-24
Inventor： Hidehiro SONODA , Chikae MATSUI , Noboru KUNIMATSU
IPC: G02F1/1337 , G02F1/1339 , G02F1/1335 , G02F1/1368 , G02F1/1343 , G02F1/1362 , 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 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：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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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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