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公开(公告)号：US09482901B2
公开(公告)日：2016-11-01
申请号：US14840604
申请日：2015-08-31
Applicant: Japan Display Inc.
Inventor： Noboru Kunimatsu , Masaki Matsumori , Hidehiro Sonoda , Yasushi Tomioka , Toshiki Kaneko
IPC: G02F1/1337 , G02F1/1339 , G02F1/1333 , G02F1/1362 , 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.
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公开(公告)号：US09417496B2
公开(公告)日：2016-08-16
申请号：US14978671
申请日：2015-12-22
Applicant: Japan Display Inc.
Inventor： Yasushi Tomioka , Yosuke Hyodo , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1362 , G02F1/1368 , G02F1/1335 , G02F1/1333 , H01L27/12
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.
Abstract translation: 在液晶显示装置中，在有机钝化膜上形成公共电极，在公共电极上形成层间绝缘膜，在层间绝缘膜上形成有狭缝的像素电极，并且形成通孔 有机钝化膜和层间绝缘膜，使得像素电极通过通孔连接到TFT的源电极。 此外，贯通孔的上基板周围的锥角小于下基板周围的锥角。 因此，当通孔的直径减小时，取向膜材料可以容易地流入通孔，以连接像素和源电极，防止由于不存在取向膜或由于取向而导致的不均匀亮度的显示缺陷 围绕通孔的膜不规则。
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公开(公告)号：US09417485B2
公开(公告)日：2016-08-16
申请号：US14625519
申请日：2015-02-18
Inventor： Chikae Matsui , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1339 , G02F1/1341 , G02F1/1337 , G02F1/1343 , G02F1/1368 , G02F1/1335
CPC classification number: G02F1/1339 , G02F1/133512 , G02F1/133514 , G02F1/1337 , G02F1/134363 , G02F1/1368 , G02F2001/133519
Abstract: In a liquid crystal display device, a light shielding film, a color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the color filter is disposed below the overcoat film to block the moisture.
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公开(公告)号：US09256104B2
公开(公告)日：2016-02-09
申请号：US14689731
申请日：2015-04-17
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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55.发明授权公开(公告)号：US09134574B2
公开(公告)日：2015-09-15
申请号：US14603334
申请日：2015-01-22
Inventor： Noboru Kunimatsu , Chikae Matsui , Hidehiro Sonoda , Yuko Matsumoto , Shoichi Uchino , Masaki Matsumori , Yasushi Tomioka
IPC: G02F1/141 , G02F1/1337 , 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 method for fabricating a liquid crystal display device including a TFT substrate having an alignment film formed thereon, an opposing substrate, and a liquid crystal layer sandwiched therebetween. The alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor. The method includes the steps of depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor, imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment, and after irradiating, heating the mixture material to form the alignment film.
Abstract translation: 一种制造液晶显示装置的方法，该液晶显示装置包括其上形成有取向膜的TFT基板，相对基板和夹在其间的液晶层。 TFT基板上的取向膜包括由包含环丁烷的第一前体制成的光解聚合物和由第二前体制成的非光解聚合物。 该方法包括以下步骤：将包含第一前体和第二前体的混合材料沉积在第二前体中，其中第二前体比第一前体沉淀在TFT基板的上表面上，对混合物进行酰亚胺化，并用紫外线照射混合材料 用于光取向的光，并且在照射之后，加热混合物材料以形成取向膜。
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Patent Agency Ranking
公开(公告)号：US20150116617A1
公开(公告)日：2015-04-30
申请号：US14593354
申请日：2015-01-09
Inventor： Noboru Kunimatsu , Chikae Matsui , Hidehiro Sonoda , Yuko Matsumoto , Shoichi Uchino , Masaki Matsumori , Yosushi Tomioka
IPC: G02F1/1337 , G02F1/1343 , G02F1/1368
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：US20150055071A1
公开(公告)日：2015-02-26
申请号：US14532591
申请日：2014-11-04
Applicant: Japan Display Inc.
Inventor： Yosuke Hyodo , Koichi Igeta , Toshiki Kaneko , Noboru Kunimatsu , Hidehiro Sonoda
IPC: G02F1/1339 , G02F1/1368 , G02F1/1341
CPC classification number: G02F1/13394 , G02F1/133371 , G02F1/13378 , G02F1/1339 , G02F1/1341 , G02F1/1368 , G02F2001/13398 , G02F2001/13415 , G02F2201/50
Abstract: A display device includes a first substrate, a second substrate and liquid crystals therebetween, the first substrate having a flat portion, an alignment film, and a concavo-convex pedestal formed in a pixel region, wherein the concavo-convex pedestal having at least two convex portions and recessed portions, and the at least two convex portions of the concavo-convex pedestal are at a position lower than a position of the flat portion. A thickness of the alignment film on the convex portions is less than a thickness of the alignment film on the recessed portions, and a second substrate has a columnar spacer which contacts the at least two convex portions of the concavo-convex pedestal.
Abstract translation: 显示装置包括第一基板，第二基板和它们之间的液晶，第一基板具有平坦部分，取向膜和形成在像素区域中的凹凸基座，其中所述凹凸基座具有至少两个 凸部和凹部，凹凸台的至少两个凸部位于比平坦部的位置低的位置。 凸部上的取向膜的厚度小于凹部上的取向膜的厚度，第二基板具有与凹凸台的至少两个凸部接触的柱状间隔件。
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58.发明申请DISPLAY DEVICE COMPRISING A RECESSED PORTION THAT IS FORMED WITH AT LEAST ONE CONVEX PORTION AT A BOTTOM OF THE RECESSED PORTION AND WHEREIN THE RECESSED PORTION FACES A COLUMNAR SPACER 有权显示装置，包括形成有至少一个凹凸部分的凹陷部分，位于被压缩部分的底部，并且在被压缩部分处形成柱形间隔件公开(公告)号：US20140247416A1
公开(公告)日：2014-09-04
申请号：US14278795
申请日：2014-05-15
Applicant: Japan Display Inc.
Inventor： Yosuke Hyodo , Koichi Igeta , Toshiki Kaneko , Noboru Kunimatsu , Hidehiro Sonoda
IPC: G02F1/1339
CPC classification number: G02F1/13394 , G02F1/133371 , G02F1/13378 , G02F1/1339 , G02F1/1341 , G02F1/1368 , G02F2001/13398 , G02F2001/13415 , G02F2201/50
Abstract: A display device includes a first substrate having organic and alignment films, a second substrate adhered to the first substrate by a sealant which surrounds a pixel region, a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate, and a recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer. The recessed portion has a convex portion at a bottom of the recessed portion, and a height of a top of the convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate. A thickness of an alignment film on the convex portion is smaller than a thickness of the bottom of the recessed portion, and a top of the columnar spacer is in contact with the convex portion.
Abstract translation: 显示装置包括具有有机和取向膜的第一基板，通过围绕像素区域的密封剂粘附到第一基板的第二基板，形成在第二基板上的形成在第一基板和第二基板之间的距离的柱状间隔件， 以及形成在像素区域的有机膜中的凹部，凹部与柱状间隔物相对。 凹部在凹部的底部具有凸部，凸部的与第一基板的顶部的高度比第一基板的有机薄膜的上表面的高度低。 凸部上的取向膜的厚度小于凹部的底部的厚度，柱状间隔件的顶部与凸部接触。
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公开(公告)号：US20220315703A1
公开(公告)日：2022-10-06
申请号：US17842922
申请日：2022-06-17
Applicant: Japan Display Inc.
Inventor： Hidehiro SONODA , Takenori Hirota , Yasushi Tomioka , Noboru Kunimatsu
IPC: C08G73/10 , G02F1/1337 , C09D179/08
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：US11275274B2
公开(公告)日：2022-03-15
申请号：US17077412
申请日：2020-10-22
Applicant: Japan Display Inc.
Inventor： Noboru Kunimatsu , Masaki Matsumori , Hidehiro Sonoda , Yasushi Tomioka , Toshiki Kaneko
IPC: G02F1/1337 , G02F1/1339 , G02F1/1333 , G02F1/1362 , G02F1/1368 , G02F1/1343
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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