公开(公告)号：US20180067365A1

公开(公告)日：2018-03-08

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：US20240284793A1

公开(公告)日：2024-08-22

申请号：US18026751

申请日：2022-06-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Jong Uk KIM ,  Suk Young BAE ,  Dong Ryun LEE ,  Han Jin AHN ,  Jun Yun KIM

IPC: H10K85/60 ,  C09K11/06 ,  H10K50/11 ,  H10K101/20 ,  H10K101/30

CPC classification number: H10K85/658 ,  C09K11/06 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/20 ,  H10K2101/30

Abstract: The present disclosure relates to an organic light emitting diode in which an emitting material layer disposed between two electrodes includes a first compound in which an electron donor moiety is liked to an electron acceptor moiety via a carbon-carbon bond, and a second compound forming a fused ring between a boron atom and a nitrogen atom, and an organic light emitting device including the organic light emitting diode. The first compound and the second compound may be included in the same emitting material layer or adjacently disposed emitting material layers. The organic light emitting diode includes the emitting material layer where includes first compound that have high bonding energy between the electron acceptor moiety and the electron donor moiety, and a second compound with an adjusted energy level compared to an energy level of the first compound, so that driving voltages of the organic light emitting diode can be lowered and luminous efficiency and luminous lifetime of the organic light emitting diode can be improved.

公开(公告)号：US20170343864A1

公开(公告)日：2017-11-30

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：US20250048927A1

公开(公告)日：2025-02-06

申请号：US17921828

申请日：2022-04-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Dong Ryun LEE ,  Suk Young BAE ,  Jong Uk KIM ,  Han Jin AHN ,  Jun Yun KIM

IPC: H10K85/60 ,  C09K11/02 ,  C09K11/06 ,  H10K50/12 ,  H10K50/13 ,  H10K101/00 ,  H10K101/10 ,  H10K101/20 ,  H10K101/30

Abstract: The present disclosure relates to an organic light emitting diode in which an emitting material layer disposed between two electrodes includes a first compound forming a fused ring among a boron atom and at least one of oxygen atom, sulfur atom and a selenium atom, and a second compound forming a fused ring between a boron atom and a nitrogen atom, and an organic light emitting device including the organic light emitting diode. The first compound and the second compound may be included in the same emitting material layer or adjacently disposed emitting material layers. The organic light emitting diode includes the emitting material layer where includes first and second compounds with adjusting their energy levels so that driving voltages of the organic light emitting diode can be lowered and luminous efficiency and luminous lifetime of the organic light emitting diode can be improved.