公开(公告)号：US20220004064A1

公开(公告)日：2022-01-06

申请号：US17475403

申请日：2021-09-15

Applicant: Japan Display Inc.

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

IPC: G02F1/1343 ,  G02F1/1362 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1368 ,  H01L27/12 ,  G02F1/1337

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：US20210088829A1

公开(公告)日：2021-03-25

申请号：US17115106

申请日：2020-12-08

Applicant: Japan Display Inc.

Inventor： Koichi IGETA ,  Hidehiro SONODA

IPC: G02F1/1333 ,  G02F1/1362 ,  G02F1/1337 ,  G02F1/1339

Abstract: A display apparatus (DSP1) includes: a flexible substrate (10) configured to include a region (DA1) and a region (DA2) on its surface; a liquid crystal film (LQ); and a photolytic alignment film configured to be in contact with the liquid crystal film (LQ). A material of the alignment film (AL1) in the region (DA1) is different from a material of the alignment film (AL2) in the region (DA2).

公开(公告)号：US20210072606A1

公开(公告)日：2021-03-11

申请号：US17101031

申请日：2020-11-23

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Toshimasa ISHIGAKI ,  Hidehiro SONODA ,  Sumito UETA

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

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.

公开(公告)号：US20200278573A1

公开(公告)日：2020-09-03

申请号：US16876786

申请日：2020-05-18

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：US20200117058A1

公开(公告)日：2020-04-16

申请号：US16714083

申请日：2019-12-13

Applicant: JAPAN DISPLAY INC.

Inventor： Noboru KUNIMATSU ,  Masaki MATSUMORI ,  Hidehiro SONODA ,  Yasushi TOMIOKA ,  Toshiki KANEKO

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1368 ,  G02F1/1362 ,  G02F1/1333 ,  G02F1/1339

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：US20190171074A1

公开(公告)日：2019-06-06

申请号：US16271981

申请日：2019-02-11

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Toshimasa ISHIGAKI ,  Hidehiro SONODA ,  Sumito UETA

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

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.

公开(公告)号：US20190121188A1

公开(公告)日：2019-04-25

申请号：US16223201

申请日：2018-12-18

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

Inventor： Hidehiro SONODA ,  Chikae MATSUI ,  Noboru KUNIMATSU

IPC: G02F1/1339 ,  G02F1/1333 ,  G02F1/1368 ,  G02F1/1362 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/13394 ,  G02F1/133305 ,  G02F1/133345 ,  G02F1/1337 ,  G02F1/134363 ,  G02F1/13439 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/13398

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：US20180180957A1

公开(公告)日：2018-06-28

申请号：US15901945

申请日：2018-02-22

Applicant: Japan display Inc.

Inventor： Yasushi TOMIOKA ,  Toshimasa ISHIGAKI ,  Hidehiro SONODA ,  Sumito UETA

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

CPC classification number: G02F1/136227 ,  G02F1/133345 ,  G02F1/133512 ,  G02F1/1337 ,  G02F1/133707 ,  G02F1/1368 ,  G02F2001/133357 ,  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.

公开(公告)号：US20170075172A1

公开(公告)日：2017-03-16

申请号：US15360595

申请日：2016-11-23

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

Inventor： Hidehiro SONODA ,  Chikae Matsui ,  Noboru Kunimatsu

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1368 ,  G02F1/1339 ,  G02F1/1333 ,  G02F1/1362

CPC classification number: G02F1/133711 ,  G02F1/133345 ,  G02F1/133514 ,  G02F1/1337 ,  G02F1/133719 ,  G02F1/133723 ,  G02F1/133788 ,  G02F1/1339 ,  G02F1/13394 ,  G02F1/134309 ,  G02F1/13439 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133519 ,  G02F2201/121 ,  G02F2201/123

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 (1) and (2): 0 nm

Abstract translation: 提供了可以减少或消除显示缺陷的液晶显示装置。 液晶显示装置包括形成在一对基板中的一个基板上的第一取向膜; 形成在所述一对基板的另一个上的第二取向膜; 第一突出部，其设置在第一取向膜上，并由构成第一取向膜下方的层的第一构成构件突出到液晶层; 和设置在第二取向膜上的第二突出部分，面对第一突出部分，并由构成第二取向膜下方的层的第二构成部件突出到液晶层中，第一突出部分设定为比第二突出部分低 突出部分，并且第一突出部分的上表面的面积被设定为小于第二突出部分的上表面的面积。 第一取向膜由光分解型取向膜材料制成。

公开(公告)号：US20160357040A1

公开(公告)日：2016-12-08

申请号：US15144973

申请日：2016-05-03

Applicant: Japan Display Inc.

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

IPC: G02F1/1337 ,  G02F1/1339

CPC classification number: G02F1/1339 ,  G02F1/13363 ,  G02F1/133788

Abstract: In a liquid crystal display device having an alignment film subjected to an optical alignment process, the frame area can be reduced while maintaining the reliability of the sealing portion. To achieve this, in the display area, the alignment process is performed with UV light on the alignment film, to form an area in which the alignment film is not formed in the opposing first and second sides, and to form an area in which the amount of UV light irradiation on the alignment film is one fourth or less of the display area in the opposing third and fourth sides. In the first and second sides, the sealing material overlaps the area in which the alignment film is not formed. In the third and fourth sides, the sealing material overlaps the area in which the amount of UV light irradiation is one fourth or less of the display area.

Abstract translation: 在具有经过光学校准处理的取向膜的液晶显示装置中，可以在保持密封部的可靠性的同时减小框架面积。 为了实现这一点，在显示区域中，在取向膜上用UV光进行取向处理，以形成在相对的第一和第二面中不形成取向膜的区域，并形成其中 取向膜上的紫外线照射量相对第三，第四面的显示面积的四分之一以下。 在第一和第二侧，密封材料与未形成取向膜的区域重叠。 在第三和第四侧，密封材料与显示区域的UV光照射量的四分之一以下的区域重叠。