公开(公告)号：US20170363920A1

公开(公告)日：2017-12-21

申请号：US15693564

申请日：2017-09-01

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Yosuke HYODO ,  Hidehiro SONODA ,  Noboru KUNIMATSU

IPC: G02F1/1343 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1368

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.

公开(公告)号：US20170137667A1

公开(公告)日：2017-05-18

申请号：US15347067

申请日：2016-11-09

Applicant: Japan Display Inc.

Inventor： Hidehiro SONODA ,  Yasushi TOMIOKA ,  Noboru KUNIMATSU ,  Takenori HIROTA

IPC: C09D179/08 ,  G02F1/1337

Abstract: According to one embodiment, a varnish for a photo alignment film includes a first polyamic acid-based compound, which is a polyamic acid or a polyamic acid ester, in an organic solvent. The first polyamic acid-based compound has terminal skeletons containing no primary amino group.

公开(公告)号：US20150168755A1

公开(公告)日：2015-06-18

申请号：US14625519

申请日：2015-02-18

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Co., Ltd.

Inventor： Chikae MATSUI ,  Hidehiro SONODA ,  Noboru KUNIMATSU

IPC: G02F1/1339 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1368 ,  G02F1/1337

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.

Abstract translation: 在液晶显示装置中，在对置基板上依次形成遮光膜，滤色器，外涂膜和取向膜。 然而，取向膜不形成在密封部中。 当利用紫外线照射取向膜时，未被取向膜覆盖的外涂层的一部分被紫外线照射而劣化。 为了防止从劣化的外涂膜渗透的水分到达遮光膜，从而改变遮光膜，并且不会引起遮光膜的剥离，滤色器设置在外涂膜的下方以阻挡水分。

公开(公告)号：US20150138476A1

公开(公告)日：2015-05-21

申请号：US14542912

申请日：2014-11-17

Applicant: Japan Display Inc.

Inventor： Yosuke HYODO ,  Yasushi TOMIOKA ,  Noboru KUNIMATSU ,  Hidehiro SONODA ,  Yasuo IMANISHI ,  Takenori HIROTA

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1368

CPC classification number: G02F1/136227 ,  G02F1/133345 ,  G02F1/1337

Abstract: To take measures against the phenomenon of difficulty for the orientation film material to flow into the through-hole when the diameter of through-holes which connects the pixel electrode and the source electrode becomes small.An interlayer insulating film 109 made of SiN is formed on a counter electrode, and a pixel electrode 110 having a slit 1101 is formed on the interlayer insulating film 109. A through-hole 111 which connects the pixel electrode 110 and the source electrode of a TFT has a large opening on the upper side, a small opening on the lower side, and an inner wall extending between the large opening and the small opening. The pixel electrode 110 covers the through-hole 111 on an inner side of the pixel of the through-hole 111 but does not cover a periphery of the large opening of the through-hole on an outer side of the through-hole 111. Consequently, an orientation film material can easily flow from a starting point given by an end portion of the pixel electrode into the inside of the through-hole.

Abstract translation: 当连接像素电极和源极电极的通孔的直径变小时，采取措施来抵抗取向膜材料流入通孔的困难现象。 在对电极上形成由SiN制成的层间绝缘膜109，在层间绝缘膜109上形成有狭缝1101的像素电极110.将像素电极110和源电极连接的通孔111 TFT在上侧具有大的开口，在下侧具有小的开口，以及在大开口和小开口之间延伸的内壁。 像素电极110覆盖通孔111的像素的内侧的通孔111，但不覆盖通孔111的外侧的通孔的大开口的周围。因此， 取向膜材料可以容易地从由像素电极的端部给出的起始点流入通孔的内部。

公开(公告)号：US20150062515A1

公开(公告)日：2015-03-05

申请号：US14474511

申请日：2014-09-02

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Noboru KUNIMATSU ,  Hidehiro SONODA ,  Yosuke HYODO

IPC: G02F1/1337 ,  G02F1/1333 ,  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。

公开(公告)号：US20150055070A1

公开(公告)日：2015-02-26

申请号：US14458308

申请日：2014-08-13

Applicant: Japan Display Inc.

Inventor： Noboru KUNIMATSU ,  Yasushi TOMIOKA ,  Hidehiro SONODA ,  Yosuke HYODO ,  Yasuo IMANISHI

IPC: G02F1/1337 ,  G02F1/1339 ,  G02F1/1343

CPC classification number: G02F1/133788 ,  G02F1/133345 ,  G02F1/1337 ,  G02F1/1339

Abstract: A TFT substrate and a counter substrate are bonded via a seal material. Alignment films are applied to entire surfaces of the TFT substrate and the counter substrate so as to realize even thickness of the alignment film. This allows a display region to be formed up to the area around the seal material. The alignment film is photo-alignment processed. An organic film formed of the material which is not photo-aligned is interposed between the alignment film and the seal material. High bonding strength between the organic film and the seal material improves reliability of a seal portion as well as reduces a frame region.

Abstract translation: TFT基板和对置基板通过密封材料接合。 将对准膜施加到TFT基板和对置基板的整个表面，以实现取向膜的均匀厚度。 这允许显示区域形成到密封材料周围的区域。 对准膜进行光取向处理。 由取向膜和密封材料之间插入由不被光取向的材料形成的有机膜。 有机膜和密封材料之间的高粘结强度提高了密封部分的可靠性，并且缩小了框架区域。

公开(公告)号：US20140307209A1

公开(公告)日：2014-10-16

申请号：US14249454

申请日：2014-04-10

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Osamu ITOU ,  Toshimasa ISHIGAKI ,  Hidehiro SONODA ,  Yosuke HYODO

IPC: G02F1/1339

CPC classification number: G02F1/13394 ,  G02F1/133788 ,  G02F2001/13398

Abstract: A high-definition and high-contrast liquid crystal display device having a high aperture ratio without light leakage around a columnar spacer is provided. The liquid crystal display device of a horizontal electric field type includes a TFT substrate with a pixel electrode and a common electrode, a color filter substrate with a color filter, a columnar spacer interposed between the substrates, and a liquid crystal layer arranged between the substrates. A liquid crystal alignment film formed between the substrates is a photo-alignment film. The columnar spacer, formed on the color filter substrate or the TFT substrate, has a wall-like shape and an inclined surface extending in a direction parallel to or perpendicular to a direction in which the liquid crystal is initially aligned.

Abstract translation: 提供了一种高分辨率和高对比度的液晶显示装置，其具有高的孔径比，而不会在圆柱形间隔物周围发生漏光。 水平电场型的液晶显示装置包括具有像素电极和公共电极的TFT基板，具有滤色器的滤色器基板，插入在基板之间的柱状隔离物和布置在基板之间的液晶层 。 形成在基板之间的液晶取向膜是光取向膜。 形成在滤色器基板或TFT基板上的柱状间隔物具有壁状形状和在与液晶初始对准的方向平行或垂直的方向上延伸的倾斜面。

公开(公告)号：US20130286333A1

公开(公告)日：2013-10-31

申请号：US13926247

申请日：2013-06-25

Applicant: Japan Display Inc.

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.

公开(公告)号：US20230273483A1

公开(公告)日：2023-08-31

申请号：US18143147

申请日：2023-05-04

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Shoichi UCHINO ,  Noboru KUNIMATSU ,  Hidehiro SONODA ,  Chikae MATSUI ,  Yuko MATSUMOTO ,  Tomio YAGUCHI ,  Toshiki KANEKO ,  Jun TANAKA

IPC: G02F1/1337 ,  G03F7/30 ,  G03F7/36

CPC classification number: G02F1/133788 ,  G03F7/30 ,  G03F7/36 ,  C09K2323/027 ,  G02F1/1316

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.

公开(公告)号：US20220004061A1

公开(公告)日：2022-01-06

申请号：US17478348

申请日：2021-09-17

Applicant: Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Noboru KUNIMATSU ,  Chikae MATSUI ,  Hidehiro SONODA ,  Yuko MATSUMOTO ,  Shoichi UCHINO ,  Masaki MATSUMORI ,  Yasushi TOMIOKA

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1368 ,  H01L27/12 ,  C09K19/56

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.