公开(公告)号：US08854582B2

公开(公告)日：2014-10-07

申请号：US14167411

申请日：2014-01-29

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: G02F1/141 ,  G02F1/1337

CPC classification number: G02F1/133723 ,  C09K19/56 ,  G02F1/133711 ,  G02F1/133788 ,  G02F1/134363 ,  G02F1/1368 ,  H01L27/1262 ,  H01L27/1296 ,  Y10T428/10 ,  Y10T428/1005

Abstract: A method for fabricating a liquid crystal display device having a TFT substrate in which an alignment film is formed over a pixel including a pixel electrode and a TFT, an opposing substrate which faces the TFT substrate, and liquid crystals sandwiched between the TFT substrate and the opposing substrate, the alignment film on the TFT substrate including a first and a second alignment film. The method includes depositing a mixture liquid of polyamide acid ester, 80 percent or more of which is polyamide acid ester including cyclobutane, and polyamide acid not including cyclobutane onto the TFT substrate and the opposing substrate, and after drying and firing the TFT substrate and the opposing substrate to harden the alignment film, irradiating the alignment film with ultraviolet light for photo-alignment of the alignment film and, thereafter, heating the TFT substrate and the opposing substrate, thereby forming the alignment film.

Abstract translation: 一种用于制造液晶显示装置的方法，该液晶显示装置具有TFT基板，其中在包括像素电极和TFT的像素上形成取向膜，面对TFT基板的相对基板和夹在TFT基板和TFT基板之间的液晶 对置基板，TFT基板上的取向膜包括第一和第二取向膜。 该方法包括：在TFT基板和相对基板上沉积其中80重量％以上的聚酰胺酸酯和不含环丁烷的聚酰胺酸和聚对苯二甲酸丁二醇酯的混合液，并将其干燥和烧制后， 相对的基板硬化取向膜，用紫外线照射取向膜，对取向膜进行光取向，然后加热TFT基板和对置基板，由此形成取向膜。

公开(公告)号：US12147133B2

公开(公告)日：2024-11-19

申请号：US18441133

申请日：2024-02-14

Applicant: Japan Display Inc.

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

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1337 ,  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：US11849609B2

公开(公告)日：2023-12-19

申请号：US16953628

申请日：2020-11-20

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka

IPC: H10K59/131 ,  H10K59/122 ,  H10K59/124

CPC classification number: H10K59/131 ,  H10K59/122 ,  H10K59/124

Abstract: According to one embodiment, a display device including, a substrate including a first area including a display area, a second area including a mount area, and a third area located between the first area and the second area, a first inorganic insulating layer provided on the substrate in the first area and the second area, a line provided on the first inorganic insulating layer and extending across the first area, the second area, and the third area, and, a second inorganic insulating layer provided on the line, the second inorganic insulating layer extending to an area overlaid on at least the first inorganic insulating layer.

公开(公告)号：US11579492B2

公开(公告)日：2023-02-14

申请号：US17655676

申请日：2022-03-21

Applicant: Japan Display Inc.

Inventor： Shinichiro Oka ,  Yasushi Tomioka ,  Koichi Igeta ,  Junji Kobashi

IPC: G02F1/1337 ,  G02F1/1335

Abstract: According to one embodiment, a liquid crystal optical element includes a substrate, a plurality of structures, a first liquid crystal layer including a plurality of liquid crystal molecules having alignment directions fixed, and a second liquid crystal layer including a plurality of liquid crystal molecules having alignment directions fixed. In an area overlapping a groove, a first director of the first liquid crystal layer extends along the groove, and a second director of the second liquid crystal layer is uniformly aligned with the first director of the second surface side, on the third surface side, and turns in planar view.

公开(公告)号：US11187936B2

公开(公告)日：2021-11-30

申请号：US16935270

申请日：2020-07-22

Applicant: Japan Display Inc.

Inventor： Shinichiro Oka ,  Yosuke Hyodo ,  Lu Jin ,  Yasushi Tomioka

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

Abstract: Regarding a flexible display apparatus, a technique capable of securing connection performance between the members in the thickness direction and reducing the change of the cell gap, and besides, achieving favorable optical property such as the improvement of the aperture ratio is provided. A display apparatus 1 includes: a first substrate SB1 having flexibility; a second substrate SB2 having flexibility; a liquid crystal layer LQ serving as an electrooptic layer; and a display area made of these components. The second substrate SB2 includes: a color filter (second color filter CF2) arranged in a region corresponding to an opening P1 of each pixel in the display area in a plan view; and a first light blocking film BM1 having an ultraviolet-light transmitting property and arranged in a region corresponding to a non-opening P2 between pixels. The electrooptic layer includes a polymer wall PW arranged in a region overlapping the first light blocking film BM1 in a plan view, the region overlapping this film, and connecting a surface Sf11 of the first substrate SB1 and a surface Sf22 of the second substrate SB2.

公开(公告)号：US11036088B2

公开(公告)日：2021-06-15

申请号：US16143796

申请日：2018-09-27

Applicant: Japan Display Inc.

Inventor： Hidehiro Sonoda ,  Masahiro Kosuge ,  Yasushi Tomioka ,  Takenori Hirota ,  Noboru Kunimatsu

IPC: G02F1/1337 ,  C09K19/56 ,  G02F1/1343 ,  C09K19/54

Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate disposed to oppose the first substrate, a layer of liquid crystal located between the first substrate and the second substrate, and an alignment film disposed on the first substrate so as to be in contact with the layer of the liquid crystal. The liquid crystal has a refractive-index anisotropy Δn of 0.11 or more, the layer of the liquid crystal has a thickness d of 2.5 μm or less, and a product Δnd of the refractive-index anisotropy Δn and the thickness d is 0.20 or more but 0.31 or less. The transmissivity of light having a wavelength of 450 nm in the first substrate and the alignment film is 85% or more but 97% or less.

公开(公告)号：US10947345B2

公开(公告)日：2021-03-16

申请号：US15647322

申请日：2017-07-12

Applicant: Japan Display Inc.

Inventor： Hidehiro Sonoda ,  Takenori Hirota ,  Yasushi Tomioka ,  Noboru Kunimatsu

IPC: C08G73/10 ,  G02F1/1337 ,  C09D179/08 ,  G02F1/1333

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

公开(公告)号：US20200348561A1

公开(公告)日：2020-11-05

申请号：US16935270

申请日：2020-07-22

Applicant: Japan Display Inc.

Inventor： Shinichiro OKA ,  Yosuke Hyodo ,  Lu Jin ,  Yasushi Tomioka

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

Abstract: Regarding a flexible display apparatus, a technique capable of securing connection performance between the members in the thickness direction and reducing the change of the cell gap, and besides, achieving favorable optical property such as the improvement of the aperture ratio is provided. A display apparatus 1 includes: a first substrate SB1 having flexibility; a second substrate SB2 having flexibility; a liquid crystal layer LQ serving as an electrooptic layer; and a display area made of these components. The second substrate SB2 includes: a color filter (second color filter CF2) arranged in a region corresponding to an opening P1 of each pixel in the display area in a plan view; and a first light blocking film BM1 having an ultraviolet-light transmitting property and arranged in a region corresponding to a non-opening P2 between pixels. The electrooptic layer includes a polymer wall PW arranged in a region overlapping the first light blocking film BM1 in a plan view, the region overlapping this film, and connecting a surface Sf11 of the first substrate SB1 and a surface Sf22 of the second substrate SB2.

公开(公告)号：US10473986B2

公开(公告)日：2019-11-12

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

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：US10418436B2

公开(公告)日：2019-09-17

申请号：US15977377

申请日：2018-05-11

Applicant: Japan Display Inc.

Inventor： Yasushi Tomioka ,  Hajime Yamaguchi

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/00

Abstract: According to one embodiment, a display device includes an insulating substrate having a display area, a pad area and a bend area, wiring lines, a first protective film and a second protective film. The wiring lines are elongated from the display area to the pad area. The first protective film is located on the insulating substrate and the wiring lines. The second protective film is located on the first protective film and is formed of an organic insulating material different from that of the first protective film.