公开(公告)号：US20240280854A1

公开(公告)日：2024-08-22

申请号：US18566596

申请日：2022-05-27

申请人： DONGWOO FINE-CHEM CO., LTD.

发明人： Dong-Hwi KIM ,  Seung-Won SONG ,  Hong-Jun AHN ,  Pyoung-Yun OH ,  Yu-Jin LEE

IPC分类号： G02F1/1335 ,  B60J3/04 ,  E06B9/24 ,  G02B5/30 ,  G02F1/13363 ,  G02F1/1339

CPC分类号： G02F1/133528 ,  B60J3/04 ,  E06B9/24 ,  G02B5/3016 ,  G02B5/305 ,  G02B5/3083 ,  G02F1/133502 ,  G02F1/13363 ,  G02F1/13396 ,  E06B2009/2464

摘要： The present invention relates to a transmittance variable optical stack and a manufacturing method therefor, and a smart window comprising same and a vehicle to which the same is applied, the optical stack comprising polarizing plates stacked on both surfaces thereof with a liquid crystal layer, driven according to an electric field, interposed therebetween, wherein the polarizing plates comprise a polarizer and a protective layer formed on at least one surface of the polarizer, a transparent conductive layer is formed in direct contact with the polarizing plate, and the optical stack has a total light transmittance that changes according to the application of voltage.

公开(公告)号：US20240329288A1

公开(公告)日：2024-10-03

申请号：US18291370

申请日：2022-09-20

申请人： DONGWOO FINE-CHEM CO., LTD.

发明人： Sung-Su KIM ,  Hong-Jun AHN ,  Pyoung-Yun OH ,  Sung-Ho BAEK

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1339

CPC分类号： G02B5/3083 ,  G02B5/3033 ,  G02F1/133502 ,  G02F1/133531 ,  G02F1/13363 ,  G02F1/13396 ,  G02F1/13398

摘要： The present invention relates to a variable transmittance optical laminate, a method for manufacturing same, a smart window comprising same, and vehicle and building windows and doors using same, the variable transmittance optical laminate comprising: a first polarizing plate including a first polarizer; a first transparent conductive layer formed on one surface of the first polarizing plate; a second polarizing plate which faces the first polarizing plate and includes a second polarizer; a second transparent conductive layer which is formed on one surface of the second polarizing plate and faces the first transparent conductive layer; and a liquid crystal layer provided between the first transparent conductive layer and the second transparent conductive layer, wherein at least one of the first polarizing plate or the second polarizing plate includes a retardation layer, the in-plane retardation value of the retardation layer is 230 nm to 280 nm, and the contained angle between the optical axis of the retardation layer and the alignment axis of the liquid crystal layer is 43° to 47°.