公开(公告)号：US20200050041A1

公开(公告)日：2020-02-13

申请号：US16655653

申请日：2019-10-17

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

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.

公开(公告)号：US20200019021A1

公开(公告)日：2020-01-16

申请号：US16579973

申请日：2019-09-24

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

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

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.

公开(公告)号：US20190107746A1

公开(公告)日：2019-04-11

申请号：US16212765

申请日：2018-12-07

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Noboru KUNIMATSU ,  Yosuke HYODO ,  Toshiki KANEKO ,  Yuko MATSUMOTO

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

CPC classification number: G02F1/13394 ,  G02F1/1339 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/13396 ,  G02F2001/13398

Abstract: A liquid crystal display device includes: a TFT substrate having gate lines and data lines arranged thereon, the gate lines extending in a first direction and arranged in a second direction, the data lines extending in the second direction and arranged in the first direction; a counter substrate having a black matrix and a color filter; and liquid crystals put between the TFT substrate and the counter substrate. Columnar spacers are formed on the counter substrate. Pedestals are formed on portions of the TFT substrate, the portions corresponding to the columnar spacers. A convex portion and a concave portion are present at the top end of the columnar spacer. The pedestal is formed corresponding to the concave portion. The concave portion is opened at the ends thereof and connected to the lateral side of the columnar spacer.

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.

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：US20170322442A1

公开(公告)日：2017-11-09

申请号：US15660254

申请日：2017-07-26

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Noboru KUNIMATSU ,  Yosuke HYODO ,  Toshiki KANEKO ,  Yuko MATSUMOTO

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

CPC classification number: G02F1/13394 ,  G02F1/1339 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/13396 ,  G02F2001/13398

Abstract: A liquid crystal display device includes: a TFT substrate having gate lines and data lines arranged thereon, the gate lines extending in a first direction and arranged in a second direction, the data lines extending in the second direction and arranged in the first direction; a counter substrate having a black matrix and a color filter; and liquid crystals put between the TFT substrate and the counter substrate. Columnar spacers are fainted on the counter substrate. Pedestals are formed on portions of the TFT substrate, the portions corresponding to the columnar spacers. A convex portion and a concave portion are present at the top end of the columnar spacer. The pedestal is formed corresponding to the concave portion. The concave portion is opened at the ends thereof and connected to the lateral side of the columnar spacer.

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：US20160097947A1

公开(公告)日：2016-04-07

申请号：US14968042

申请日：2015-12-14

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Noboru KUNIMATSU ,  Yosuke HYODO ,  Toshiki KANEKO ,  Yuko MATSUMOTO

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

CPC classification number: G02F1/13394 ,  G02F1/1339 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/13396 ,  G02F2001/13398

Abstract: A liquid crystal display device includes: a TFT substrate having gate lines and data lines arranged thereon, the gate lines extending in a first direction and arranged in a second direction, the data lines extending in the second direction and arranged in the first direction; a counter substrate having a black matrix and a color filter; and liquid crystals put between the TFT substrate and the counter substrate. Columnar spacers are formed on the counter substrate. Pedestals are formed on portions of the TFT substrate, the portions corresponding to the columnar spacers. A convex portion and a concave portion are present at the top end of the columnar spacer. The pedestal is formed corresponding to the concave portion. The concave portion is opened at the ends thereof and connected to the lateral side of the columnar spacer.

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。