公开(公告)号：US09846332B2

公开(公告)日：2017-12-19

申请号：US14307280

申请日：2014-06-17

Applicant: LG Display Co., Ltd.

Inventor： SeungRyull Park ,  HyunJin Park ,  JinPil Kim ,  Han Jin Ahn ,  Hanseok Lee ,  Su-Bin Lee

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/133788 ,  G02F1/133723 ,  G02F1/134363 ,  G02F2001/134372 ,  G02F2001/13712 ,  Y10T428/1018 ,  Y10T428/1023

Abstract: Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.

公开(公告)号：US10082705B2

公开(公告)日：2018-09-25

申请号：US15813029

申请日：2017-11-14

Applicant: LG Display Co., Ltd.

Inventor： SeungRyull Park ,  HyunJin Park ,  JinPil Kim ,  Han Jin Ahn ,  Hanseok Lee ,  Su-Bin Lee

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/133788 ,  G02F1/133723 ,  G02F1/134363 ,  G02F2001/134372 ,  G02F2001/13712 ,  Y10T428/1018 ,  Y10T428/1023

Abstract: Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.

公开(公告)号：US10073302B2

公开(公告)日：2018-09-11

申请号：US15681213

申请日：2017-08-18

Applicant: LG Display Co., Ltd.

Inventor： SeungRyull Park ,  HyunJin Park ,  JinPil Kim ,  Han Jin Ahn ,  Hanseok Lee ,  Su-Bin Lee

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/133788 ,  G02F1/133723 ,  G02F1/134363 ,  G02F2001/134372 ,  G02F2001/13712 ,  Y10T428/1018 ,  Y10T428/1023

Abstract: An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.

公开(公告)号：US09766501B2

公开(公告)日：2017-09-19

申请号：US14307237

申请日：2014-06-17

Applicant: LG Display Co., Ltd.

Inventor： SeungRyull Park ,  HyunJin Park ,  JinPil Kim ,  Han Jin Ahn ,  Hanseok Lee ,  Su-Bin Lee

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/133788 ,  G02F1/133723 ,  G02F1/134363 ,  G02F2001/134372 ,  G02F2001/13712 ,  Y10T428/1018 ,  Y10T428/1023

Abstract: An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.

公开(公告)号：US20140368779A1

公开(公告)日：2014-12-18

申请号：US14307280

申请日：2014-06-17

Applicant: LG Display Co., Ltd.

Inventor： SeungRyull Park ,  HyunJin Park ,  JinPil Kim ,  Han Jin Ahn ,  Hanseok Lee ,  Su-Bin Lee

IPC: G02F1/1337

CPC classification number: G02F1/133788 ,  G02F1/133723 ,  G02F1/134363 ,  G02F2001/134372 ,  G02F2001/13712 ,  Y10T428/1018 ,  Y10T428/1023

Abstract: Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.

Abstract translation: 提供了根据本发明的实施例的制造新型液晶显示装置的方法。 首先，在基板上形成取向膜。 将取向膜分为使用含有光分解物质的液态聚酰亚胺作为前体而形成的第一取向膜和使用不含光分解物质的聚酰胺酸作为前体而形成的第二取向膜。 紫外光照射到取向膜上，通过至少两步去除工艺除去由UV光照射形成的分解物质。 通过制造根据本发明的示例性实施例的液晶显示装置的方法，亮点最小化并且黑色的亮度降低，从而可以实现具有高对比度的液晶显示装置。

公开(公告)号：US20140368775A1

公开(公告)日：2014-12-18

申请号：US14307237

申请日：2014-06-17

Applicant: LG Display Co., Ltd.

Inventor： SeungRyull Park ,  HyunJin Park ,  JinPil Kim ,  Han Jin Ahn ,  Hanseok Lee ,  Su-Bin Lee

IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/137

CPC classification number: G02F1/133788 ,  G02F1/133723 ,  G02F1/134363 ,  G02F2001/134372 ,  G02F2001/13712 ,  Y10T428/1018 ,  Y10T428/1023

Abstract: An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.

Abstract translation: 用于液晶显示装置的取向膜包括朝向液晶层定位的第一部分和远离液晶层的第二部分。 第一部分提供改进的锚固力，而第二部分表现出比第一部分更低的体积电阻。 因此，AC图像粘贴和DC图像粘贴可以同时最小化。