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公开(公告)号：US10795211B2
公开(公告)日：2020-10-06
申请号：US15949336
申请日：2018-04-10
Applicant: Japan Display Inc.
Inventor： Hidehiro Sonoda , Takenori Hirota , Noboru Kunimatsu , Koichi Igeta
IPC: G02F1/1337 , G02F1/1345 , G02F1/1339 , G02F1/1333 , G02F1/1362 , G02F1/1343 , G02F1/1368
Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a first area and a second area, a second substrate opposing the first substrate but not opposing the second area, a sealing part which adheres the first substrate and the second substrate to each other, a liquid crystal layer located between the first substrate and the second substrate and surrounded by the sealing part, an alignment film disposed on the first substrate so as to be in contact with the liquid crystal layer and a terminal located in the second area and connected to an external circuit. In plan view, the alignment film includes an end located between the sealing part and the terminal.
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公开(公告)号：US10670922B2
公开(公告)日：2020-06-02
申请号：US16579973
申请日：2019-09-24
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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公开(公告)号：US10288945B2
公开(公告)日：2019-05-14
申请号：US15806478
申请日：2017-11-08
Applicant: Japan Display Inc.
Inventor： Takenori Hirota , Yasuhiro Kanaya , Hidehiro Sonoda , Toshiki Kaneko
IPC: G02F1/1333 , G02F1/1339
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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公开(公告)号：US10247990B2
公开(公告)日：2019-04-02
申请号：US16158402
申请日：2018-10-12
Applicant: Japan Display Inc.
Inventor： Yasushi Tomioka , Yosuke Hyodo , Hidehiro Sonoda , Noboru Kunimatsu
IPC: G02F1/1343 , G02F1/1337 , G02F1/1335 , H01L27/12 , G02F1/1368 , G02F1/1333 , G02F1/1362
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：US20190094628A1
公开(公告)日：2019-03-28
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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Patent Agency Ranking
公开(公告)号：US10168579B2
公开(公告)日：2019-01-01
申请号：US14879345
申请日：2015-10-09
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：US09841635B2
公开(公告)日：2017-12-12
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 , G02F1/1333
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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公开(公告)号：US09778520B2
公开(公告)日：2017-10-03
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 , G02F1/1368 , G02F1/1362 , G02F1/1335 , G02F1/1333 , G02F1/1337
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：US09709854B2
公开(公告)日：2017-07-18
申请号：US14720381
申请日：2015-05-22
Applicant: Japan Display Inc.
Inventor： Takenori Hirota , Yasuhiro Kanaya , Hidehiro Sonoda , Toshiki Kaneko
IPC: G02F1/1339 , G02F1/1333
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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公开(公告)号：US09507211B2
公开(公告)日：2016-11-29
申请号：US14474511
申请日：2014-09-02
Applicant: Japan Display Inc.
Inventor： Yasushi Tomioka , Noboru Kunimatsu , Hidehiro Sonoda , Yosuke Hyodo
IPC: G02F1/1333 , G02F1/1337 , G02F1/1339
CPC classification number: G02F1/133788 , G02F1/133345 , G02F1/13394 , G02F2001/133388
Abstract: The invention provides a liquid crystal display device which is highly reliable even with a slim frame area. Ina liquid crystal display device having a display area and a frame area, the frame area includes, in an area close to the display area, a flat portion where an organic insulation film, a transparent conductive film, and an alignment film are stacked in this order and, in an area away from the display area, a groove structure formed in the organic insulation film, the groove structure being continuous surrounding the display area. The organic insulation film is less wettable than the transparent conductive film by the alignment film ink.
Abstract translation: 本发明提供一种液晶显示装置，其即使具有纤细的框架区域也是高度可靠的。 在具有显示区域和框架区域的液晶显示装置中，框架区域在靠近显示区域的区域中包括在其中堆叠有机绝缘膜，透明导电膜和取向膜的平坦部分 并且在远离显示区域的区域中，形成在有机绝缘膜中的凹槽结构，所述凹槽结构连续围绕显示区域。 有机绝缘膜比通过取向膜墨水的透明导电膜的可润湿性差。
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