公开(公告)号：US20210041749A1

公开(公告)日：2021-02-11

申请号：US17078628

申请日：2020-10-23

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

Inventor： Chikae MATSUI ,  Noboru KUNIMATSU ,  Hidehiro SONODA

IPC: G02F1/1337 ,  C09K19/56 ,  G02F1/1343

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.

公开(公告)号：US20200249533A1

公开(公告)日：2020-08-06

申请号：US16855023

申请日：2020-04-22

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

Inventor： Hidehiro SONODA ,  Chikae MATSUI ,  Noboru KUNIMATSU

IPC: G02F1/1337 ,  G02F1/1362 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1368 ,  G02F1/1339 ,  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 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

公开(公告)号：US20200225543A1

公开(公告)日：2020-07-16

申请号：US16828026

申请日：2020-03-24

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

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：US20190041707A1

公开(公告)日：2019-02-07

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 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1333 ,  H01L27/12

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：US20180299735A1

公开(公告)日：2018-10-18

申请号：US16014024

申请日：2018-06-21

Applicant: Japan Display Inc.

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

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

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：US20170146872A1

公开(公告)日：2017-05-25

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

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：US20160377926A1

公开(公告)日：2016-12-29

申请号：US15264146

申请日：2016-09-13

Applicant: Japan Display Inc.

Inventor： Masaki MATSUMORI ,  Shuji IMAZEKI ,  Yasushi TOMIOKA ,  Noboru KUNIMATSU

IPC: G02F1/1337 ,  C08G73/16 ,  C09D179/08 ,  G02F1/1368

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：US20150226990A1

公开(公告)日：2015-08-13

申请号：US14615657

申请日：2015-02-06

Applicant: Japan Display Inc.

Inventor： Daisuke MIYAZAKI ,  Noboru KUNIMATSU ,  Yojiro SHIMADA ,  Yoshinori YAMAMOTO ,  Toshiyuki HIGANO ,  Ryoichi TABUCHI

IPC: G02F1/1339 ,  H01L27/12 ,  G02F1/1337

CPC classification number: G02F1/1339 ,  G02F1/133723 ,  H01L27/1259

Abstract: A technique for attaining both improvement of edge rectilinearity of an alignment film and reduction of unevenness is provided. A liquid crystal display device includes a first substrate on which a first alignment film is formed, a second substrate on which a second alignment film is formed, and a liquid crystal layer sandwiched between the first and second substrates. A material forming a frame arranged to surround the first alignment film inside a seal member with which the first and second substrates are bonded to each other is a highly water repellent organic material having a low solubility in an application liquid for forming the first alignment film.

Abstract translation: 提供了用于获得对准膜的边缘直线性的改善和减少不均匀性的技术。 液晶显示装置包括：第一基板，其上形成有第一取向膜;第二基板，其上形成有第二取向膜;液晶层，夹在第一基板和第二基板之间。 在第一和第二基板彼此结合的密封构件内部形成围绕第一取向膜的框架的材料是在用于形成第一取向膜的涂布液中溶解性低的高斥水性有机材料。

公开(公告)号：US20150015840A1

公开(公告)日：2015-01-15

申请号：US14325703

申请日：2014-07-08

Applicant: Japan Display Inc.

Inventor： Yasuo IMANISHI ,  Yosuke HYODO ,  Chikae MATSUI ,  Hidehiro SONODA ,  Noboru KUNIMATSU

IPC: G02F1/1337 ,  G02F1/1339

CPC classification number: G02F1/133723 ,  G02F1/133711 ,  G02F1/133788 ,  G02F1/1339 ,  G02F1/13394

Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate on each of which an alignment film is formed and a liquid crystal interposed and held between the alignment films of the TFT and counter substrate, wherein the alignment film is made of a material capable of applying liquid crystal alignment regulation force by polarized light irradiation, a convex structure is formed on the TFT substrate or the counter substrate, and the alignment film is applied the liquid crystal alignment regulation force to a surface of a region ranging from the periphery of the convex structure to the vicinity of an inclined part of the convex structure and is not applied the liquid crystal alignment regulation force to a surface of the inclined part of the convex structure.

Abstract translation: 液晶显示装置包括TFT基板和对置基板，每个基板上形成有取向膜，液晶插入并保持在TFT和对向基板的取向膜之间，其中取向膜由能够 通过偏振光照射施加液晶取向调节力，在TFT基板或对置基板上形成凸起结构，并且将取向膜作为液晶取向调节力施加到从 凸结构到凸结构的倾斜部分附近，并且不将液晶取向调节力施加到凸结构的倾斜部分的表面。

公开(公告)号：US20140104554A1

公开(公告)日：2014-04-17

申请号：US14107028

申请日：2013-12-16

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

Abstract translation: 液晶显示装置具有液晶显示面板，其具有各自具有排列成点阵列的有源器件，像素电极，公共电极和液晶层的像素。 液晶显示面板具有第一基板，第二基板和设置在第一基板和第二基板之间的液晶层。 第一基板具有有源器件，像素电极，公共电极和第一取向膜。 第二基板具有第二取向膜。 第一取向膜和第二取向膜分别是通过用光照射光分解型绝缘膜而形成的光取向膜。 第二取向膜的厚度为至少10nm且不大于50nm，并且比第一取向膜薄。