公开(公告)号：US09939698B2

公开(公告)日：2018-04-10

申请号：US15784405

申请日：2017-10-16

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka ,  Toshimasa Ishigaki ,  Hidehiro Sonoda ,  Sumito Ueta

IPC: G02F1/1362 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1368 ,  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：US20160327843A1

公开(公告)日：2016-11-10

申请号：US15212873

申请日：2016-07-18

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka ,  Yosuke Hyodo ,  Hidehiro Sonoda ,  Noboru Kunimatsu

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/1335 ,  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：US09470930B2

公开(公告)日：2016-10-18

申请号：US14475845

申请日：2014-09-03

Applicant: Japan Display Inc.

Inventor： Masaki Matsumori ,  Shuji Imazeki ,  Yasushi Tomioka ,  Noboru Kunimatsu

IPC: C09K19/00 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/133723 ,  B32B2457/202 ,  C08G73/16 ,  C08G2150/00 ,  C09D179/08 ,  G02F1/133788 ,  G02F1/134363 ,  G02F1/1368 ,  Y10T428/10 ,  Y10T428/1005

Abstract: Various layer separation states are generated by the combination of a polyamide acid ester and a polyamide acid and a long residual image characteristic cannot be further improved merely by combining them. A liquid crystal display device comprises a substrate, a liquid crystal layer, and an orientation film placed between the substrate and the liquid crystal layer. The orientation film comprises a polyimide precursor having two or more components. In the polyimide precursor, an octanol-water partition coefficient is defined as log P and the difference in log P (Δ log P) between the two components having most distant log Ps is set so as to fall within a prescribed range.

Abstract translation: 通过聚酰胺酸酯和聚酰胺酸的组合产生各种层分离状态，仅通过组合它们就不能进一步提高长残留图像特性。 液晶显示装置包括基板，液晶层和位于基板和液晶层之间的取向膜。 取向膜包括具有两种或更多种成分的聚酰亚胺前体。 在聚酰亚胺前体中，将辛醇 - 水分配系数定义为log P，将具有最远距离log Ps的两个成分之间的log P（ΔlogP）的差设定为规定范围。

公开(公告)号：US09448448B2

公开(公告)日：2016-09-20

申请号：US14508277

申请日：2014-10-07

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka ,  Takato Hiratsuka ,  Osamu Itou

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

CPC classification number: G02F1/134363 ,  G02F1/133345 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/1337 ,  G02F1/13394 ,  G02F1/13439 ,  G02F1/13624 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133302 ,  G02F2001/13398 ,  G02F2001/134345 ,  G02F2201/121 ,  G02F2201/123 ,  G02F2203/04 ,  H01L27/124

Abstract: A liquid crystal display device includes a TFT substrate, a CF substrate, and a liquid crystal interposed between the TFT substrate and the CF substrate, and drives the liquid crystal in a horizontal electric field. The TFT substrate includes a recess, and the CF substrate includes a columnar protrusion. The protrusion of the CF substrate is fitted to the recess of the TFT substrate so as to function as a stopper for preventing a positional gap between the TFT substrate and the CF substrate.

Abstract translation: 液晶显示装置包括TFT基板，CF基板和介于TFT基板和CF基板之间的液晶，并且在水平电场中驱动液晶。 TFT基板包括凹部，CF基板包括柱状突起。 CF基板的突出部配合在TFT基板的凹部，作为防止TFT基板与CF基板的位置间隙的止动件。

公开(公告)号：US09360709B2

公开(公告)日：2016-06-07

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 ,  G02F1/1333

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：US09213202B2

公开(公告)日：2015-12-15

申请号：US14339492

申请日：2014-07-24

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka ,  Noboru Kunimatsu ,  Hidehiro Sonoda ,  Yasuo Imanishi ,  Koichi Igeta

IPC: G02F1/1339 ,  G02F1/1362

CPC classification number: G02F1/1339 ,  G02F1/13392 ,  G02F1/13394 ,  G02F1/136227 ,  G02F2001/13396

Abstract: A display device includes a first substrate having a plurality of TFTs, a passivation film, and a plurality of pixel electrodes, and a second substrate arranged with a gap with the first substrate. The passivation film has a plurality of contact holes, and the plurality of pixel electrodes are connected to the plurality of TFTs via the plurality of contact holes. The second substrate has a plurality of columnar spacers for ensuring the gap with the first substrate, and a plurality of columnar projections for misalignment prevention formed at positions corresponding to the contact holes. The number of the plurality of columnar projections is less than the number of the plurality of columnar spacers.

Abstract translation: 显示装置包括具有多个TFT的第一基板，钝化膜和多个像素电极，以及与第一基板间隔设置的第二基板。 钝化膜具有多个接触孔，并且多个像素电极经由多个接触孔连接到多个TFT。 第二基板具有多个用于确保与第一基板的间隙的柱状间隔件，以及在对应于接触孔的位置形成多个用于不对准的柱状突起。 多个柱状突起的数量少于多个柱状间隔物的数量。

公开(公告)号：US09158160B2

公开(公告)日：2015-10-13

申请号：US14485711

申请日：2014-09-13

Applicant: Japan Display Inc.

Inventor： Noboru Kunimatsu ,  Masaki Matsumori ,  Hidehiro Sonoda ,  Yasushi Tomioka ,  Toshiki Kaneko

IPC: G02F1/1337 ,  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.

Abstract translation: 本发明防止了使用光取向的IPS方法的液晶显示装置中的柱状间隔物引起的取向膜的刮削。 在对置基板上形成的柱状间隔件与TFT基板接触的部分，形成比像素电极高的底座。 当在像素电极和底座上施加双层结构的取向膜时，底座上的取向膜的厚度减小了平整效应。 当在该状态下进行光对准时，在底座上的光降解的上取向膜消失，并且残留有机械强度较高的下取向膜。 结果，可以防止取向膜的刮削。

公开(公告)号：US09146426B2

公开(公告)日：2015-09-29

申请号：US14603338

申请日：2015-01-22

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

Inventor： Yasuo Imanishi ,  Masaki Matsumori ,  Yasushi Tomioka

IPC: G02F1/141 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/133711 ,  G02F1/1337 ,  G02F1/133707 ,  G02F1/133723 ,  G02F1/134327

Abstract: A liquid crystal display device includes first and second substrates, at least one of which is transparent, a liquid crystal layer which is disposed between the first and second substrates, a pixel electrode and a common electrode which are formed on one of the first and second substrates and which apply an electric field to the liquid crystal layer, a plurality of active elements which is connected to the pixel electrode and the common electrode, an alignment film which is disposed on at least one of the first and second substrates and has one surface contacting the liquid crystal layer, and an underlying layer which is disposed on at least one of the first and second substrates and contacts the other surface of the alignment film. The pixel electrode is laminated on the common electrode having a plane shape through an isolation film.

Abstract translation: 液晶显示装置包括第一和第二基板，其中至少一个是透明的，设置在第一和第二基板之间的液晶层，形成在第一和第二基板之一上的像素电极和公共电极 衬底，并且对液晶层施加电场;连接到像素电极和公共电极的多个有源元件;配置膜，设置在第一和第二衬底中的至少一个上并具有一个表面 与液晶层接触，以及设置在第一和第二基板中的至少一个上并与取向膜的另一个表面接触的下层。 像素电极通过隔离膜层叠在具有平面形状的公共电极上。

公开(公告)号：US09097939B2

公开(公告)日：2015-08-04

申请号：US14527858

申请日：2014-10-30

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

Inventor： Shoichi Uchino ,  Noboru Kunimatsu ,  Hidehiro Sonoda ,  Chikae Matsui ,  Yuko Matsumoto ,  Masaki Matsumori ,  Yasushi Tomioka ,  Jun Tanaka

IPC: G02F1/1337 ,  C08G73/10

CPC classification number: G02F1/133723 ,  B32B2457/202 ,  C08G73/1064 ,  C08G73/1078 ,  Y10T428/10 ,  Y10T428/1005 ,  Y10T428/1023

Abstract: A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure.

Abstract translation: 液晶显示装置包括：至少一个透明的一对基板; 设置在所述一对基板之间的液晶层; 形成在所述一对基板的至少一个基板上的用于向所述液晶层施加电场的电极组; 连接到所述电极组的多个有源元件; 以及设置在该对基板的至少一个基板上的液晶取向膜，其中通过光取向工艺形成的液晶取向膜含有使用四羧酸二酐和/或二胺形成的聚酰亚胺，所述四羧酸二酐和/或二胺各自具有 具体化学结构。

公开(公告)号：US20150062519A1

公开(公告)日：2015-03-05

申请号：US14534235

申请日：2014-11-06

Applicant: Japan Display Inc.

Inventor： Masaki Matsumori ,  Yasuo Imanishi ,  Yasushi Tomioka ,  Noboru Kunimatsu

IPC: G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/133723 ,  C08G73/1042 ,  C08G73/1075 ,  C08G73/1078 ,  C08G73/1085 ,  C08G73/14 ,  C08L79/08 ,  C08L2205/02 ,  G02F1/133788 ,  G02F1/1343 ,  G02F2001/133738 ,  Y10T428/1023

Abstract: Disclosed is a liquid crystal display device including: a first substrate and a second substrate, one of which is transparent; a liquid crystal layer disposed between the first substrate and the second substrate; a group of electrodes for applying an electric field to the liquid crystal layer, which is formed on one of the first substrate and the second substrate; a plurality of active elements connected to the group of electrodes; and an alignment film disposed on one of the first substrate and the second substrate, wherein the alignment film contains a polyimide and a precursor of the polyimide, each of which is formed from a diamine and an acid anhydride, and the diamine contains a first diamine having an acidic group and a second diamine having a nitrogen atom-containing functional group other than two amino groups.

Abstract translation: 公开了一种液晶显示装置，包括：第一基板和第二基板，其中之一是透明的; 设置在所述第一基板和所述第二基板之间的液晶层; 一组用于向液晶层施加电场的电极，其形成在第一基板和第二基板之一上; 连接到所述一组电极的多个有源元件; 以及配置在所述第一基板和所述第二基板之一上的取向膜，其中所述取向膜含有聚酰亚胺和所述聚酰亚胺的前体，所述前体由二胺和酸酐形成，所述二胺含有第一二胺 具有酸性基团和具有除了两个氨基以外的含氮原子的官能团的第二二胺。