公开(公告)号：US11650467B2

公开(公告)日：2023-05-16

申请号：US17945789

申请日：2022-09-15

Applicant: Japan Display Inc.

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

IPC: G02F1/136 ,  G02F1/1362 ,  G02F1/1337 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1368

CPC classification number: G02F1/136227 ,  G02F1/1337 ,  G02F1/1368 ,  G02F1/133345 ,  G02F1/133512 ,  G02F1/133707 ,  G02F1/133357 ,  G02F2201/121 ,  G02F2201/123

Abstract: To prevent a phenomenon that an alignment film material is difficult to flow into the through-hole where a diameter of a through-hole for connecting between a pixel electrode and a source electrode is reduced.
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：US11175546B2

公开(公告)日：2021-11-16

申请号：US17101031

申请日：2020-11-23

Applicant: Japan Display Inc.

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

IPC: G02F1/136 ,  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：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：US09110336B2

公开(公告)日：2015-08-18

申请号：US13721316

申请日：2012-12-20

Applicant: Japan Display Inc.

Inventor： Setsuo Kobayashi ,  Sumito Ueta

IPC: G02F1/1333 ,  G02F1/1339 ,  G02F1/1341

CPC classification number: G02F1/13394 ,  G02F1/133305 ,  G02F1/1339 ,  G02F2001/13415

Abstract: Columnar spacers are formed on a TFT substrate where a TFT circuit layer is formed. The TFT circuit layer has a TFT and a pixel electrode. A spacing between the TFT substrate and a counter substrate having a color filter, a black matrix, and an overcoat film is controlled by columnar spacers. The columnar spacers are inserted into an overcoat film formed on the counter substrate. Thus, the counter substrate and the TFT substrate are protruded inward. The substrates protruded inward are unlikely to be deformed. When an external pressure is applied or the front window or the like is bonded to the liquid crystal display panel with resin, the counter substrate is unlikely to be deformed by a stress applied by shrinkage on resin curing. Moreover, the number of columnar spacers can be properly set, thereby preventing the occurrence of low-temperature air bubbles.

Abstract translation: 在形成有TFT电路层的TFT基板上形成柱状间隔物。 TFT电路层具有TFT和像素电极。 TFT基板和具有滤色器，黑矩阵和外涂膜的对置基板之间的间隔由柱状间隔物控制。 将柱状间隔物插入形成在对置基板上的覆盖膜中。 因此，相对基板和TFT基板向内突出。 向内突出的基板不可能变形。 当施加外部压力或者使用树脂将前窗等结合到液晶显示面板时，由于在树脂固化时由于收缩而施加的应力，对向基板不会变形。 此外，可以适当地设置柱状间隔件的数量，从而防止低温气泡的发生。