公开(公告)号：US20240319545A1

公开(公告)日：2024-09-26

申请号：US18672682

申请日：2024-05-23

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio ISHII ,  Keisuke MIURA ,  Yusuke HAGIWARA

IPC: G02F1/1339 ,  B32B3/08 ,  B32B17/10 ,  G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/13394 ,  B32B3/085 ,  B32B17/10005 ,  B32B17/10036 ,  B32B17/10293 ,  B32B17/10302 ,  B32B17/10348 ,  B32B17/10467 ,  B32B17/10504 ,  B32B17/10761 ,  B32B17/10788 ,  G02F1/133388 ,  G02F1/133512

Abstract: Provided are a laminated glass which has a reduced occurrence of voids and accumulation of liquid crystal, and a production method for the laminated glass. Also provided is a laminated glass which can prevent deterioration of a sealing material. This laminated glass 1 comprises a first glass plate 33A, a first intermediate film 31A, a liquid crystal film 10, a second intermediate film 31B, and a second glass plate, which are layered and disposed in this order, wherein the first glass plate 33A and the second glass plate 33B have a larger outer shape than that of the liquid crystal film 10, and a spacer 32 is provided in at least a portion of a region which is interposed between the first glass plate 33A and the second glass plate 33B and in which the liquid crystal film 10 is not disposed.

公开(公告)号：US20230350249A1

公开(公告)日：2023-11-02

申请号：US18219897

申请日：2023-07-10

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Keisuke MIURA ,  Yusuke NUSHI ,  Yusuke HAGIWARA

IPC: G02F1/1339 ,  E06B3/67 ,  E06B9/24 ,  G02F1/1337 ,  G02F1/137

CPC classification number: G02F1/13394 ,  G02F1/13392 ,  E06B3/6722 ,  E06B9/24 ,  G02F1/1337 ,  G02F1/13725 ,  G02F1/13398 ,  B60J1/001

Abstract: The present invention is to enable avoidance of a reduction in external appearance quality, and stable driving, and prevent diffracted light from being discerned by avoiding a reduction in transmittance and a deterioration in liquid crystal alignment. A light control film is provided with: a first laminate in which an alignment layer is provided; a second laminate in which an alignment layer is provided; a liquid crystal layer which is sandwiched between the first and second laminates and contains liquid crystal molecules; a spacer disposed in the liquid crystal layer to hold the thickness of the liquid crystal layer; and electrodes provided in the first laminate and/or the second laminate, and controls transmitted light by controlling the alignment of the liquid crystal molecules driven by the electrodes. The proportion of an area occupied by the spacer per unit area in a light controllable-region of the liquid crystal layer is 0.1-10%.

公开(公告)号：US20230067010A1

公开(公告)日：2023-03-02

申请号：US17977419

申请日：2022-10-31

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Keisuke MIURA ,  Yusuke HAGIWARA ,  Yasunori HAYASHIDA ,  Makoto YAMAKI

IPC: G02B5/30 ,  G02F1/13 ,  G02F1/03 ,  G02F1/1335 ,  G02F1/13357

Abstract: Provided is a light control film capable of gradually changing the in-plane transmittance and thereby adding an in-plane gradation between light and dark. A light control film 10 according to the present invention includes: a first electrode 22A and a second electrode 22B disposed facing each other; a light control material 14 disposed between the first electrode 22A and the second electrode 22B and changing the transmittance in accordance with the potential difference between the first electrode 22A and the second electrode 22B; and a potential gradient forming part for providing the gradient of the potential difference in the extension direction of the first electrode 22A and the second electrode 22B.

公开(公告)号：US20210208445A1

公开(公告)日：2021-07-08

申请号：US16761316

申请日：2018-11-02

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Takao IKEZAWA ,  Keisuke MIURA ,  Norio ISHII ,  Makoto YAMAKI ,  Yusuke NAKAMURA ,  Tomoya KAWASHIMA ,  Yusuke HAGIWARA ,  Satoru NISHIMA

IPC: G02F1/1333 ,  G02F1/1343 ,  B32B17/10 ,  B32B37/06

Abstract: A method for manufacturing a laminated glass whereby, in a laminated glass comprising a liquid crystal film sandwiched therein and having a three-dimensionally curved surface shape, the formation of wrinkles in the liquid crystal film can be suppressed; and a laminated glass which has a three-dimensionally curved surface shape and in which wrinkles in a liquid crystal film sandwiched therein are suppressed. The method for manufacturing the laminated glass comprises: a heat molding step for heating the liquid crystal film to a temperature higher than the glass transition point of the first base material layer and the second base material layer; and a bonding step for, after completing the heat molding step, heating the laminate, wherein the liquid crystal film is sandwiched between the first glass sheet and the second glass sheet, at a temperature lower than the glass transition point and bonding the same by applying a preset pressure.

公开(公告)号：US20200326577A1

公开(公告)日：2020-10-15

申请号：US16913293

申请日：2020-06-26

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Keisuke MIURA ,  Yusuke HAGIWARA ,  Tsubasa HONDA ,  Noriko KATASHIMA ,  Norio ISHII ,  Tomoya KAWASHIMA

IPC: G02F1/1339 ,  E06B3/66 ,  E06B9/24

Abstract: The reliability of a spacer is improved in comparison to conventional ones. A light control film which is obtained by sandwiching a liquid crystal layer between first and second laminates that are provided with at least alignment layers and which controls light transmitted therethrough by controlling the alignment of liquid crystal molecules in the liquid crystal layer by driving electrodes that are provided on the first and second laminates. With respect to the first laminate, a base that is formed of a transparent film material is provided with a spacer that maintains the thickness of the liquid crystal layer. With respect to the first and second laminates, the Vickers hardness of the spacer is from 16.9 to 40.2 inclusive, and the Vickers hardness of a part of the second laminate, the part being in contact with the front end of the spacer, is from 11.8 to 35.9 inclusive.

公开(公告)号：US20190121186A1

公开(公告)日：2019-04-25

申请号：US16094330

申请日：2017-04-20

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Keisuke MIURA ,  Yusuke HAGIWARA ,  Tsubasa HONDA ,  Noriko KATASHIMA ,  Norio ISHII ,  Tomoya KAWASHIMA

IPC: G02F1/1339 ,  E06B3/66 ,  G02F1/1337

Abstract: The present invention further improves the reliability of a spacer in comparison to conventional ones. A light control film 10 which is obtained by sandwiching a liquid crystal layer 14 between first and second laminates 13, 12 that are provided with at least alignment layers 23A, 23B, and which controls light transmitted therethrough by controlling the alignment of liquid crystal molecules 14A in the liquid crystal layer 14 by driving electrodes 22B, 22A that are provided on the first and second laminates 13, 12. With respect to the first laminate 13, a base 21B that is formed of a transparent film material is provided with a spacer 24 that maintains the thickness of the liquid crystal layer 14. With respect to the first and second laminates 13, 12, the Vickers hardness Xs of the spacer 24 is from 16.9 to 40.2 (inclusive), and the Vickers hardness Xf of a part of the second laminate 12, said part being in contact with the front end of the spacer 24, is from 11.8 to 35.9 (inclusive).

公开(公告)号：US20210103174A1

公开(公告)日：2021-04-08

申请号：US16635204

申请日：2018-07-30

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio ISHII ,  Keisuke MIURA ,  Yusuke HAGIWARA

IPC: G02F1/1339 ,  G02F1/1335 ,  G02F1/1333 ,  B32B17/10 ,  B32B3/08

Abstract: Provided are a laminated glass which has a reduced occurrence of voids and accumulation of liquid crystal, and a production method for the laminated glass. Also provided is a laminated glass which can prevent deterioration of a sealing material. This laminated glass 1 comprises a first glass plate 33A, a first intermediate film 31A, a liquid crystal film 10, a second intermediate film 31B, and a second glass plate, which are layered and disposed in this order, wherein the first glass plate 33A and the second glass plate 33B have a larger outer shape than that of the liquid crystal film 10, and a spacer 32 is provided in at least a portion of a region which is interposed between the first glass plate 33A and the second glass plate 33B and in which the liquid crystal film 10 is not disposed.

公开(公告)号：US20190146134A1

公开(公告)日：2019-05-16

申请号：US16310214

申请日：2017-06-16

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Keisuke MIURA ,  Yusuke HAGIWARA ,  Yasunori HAYASHIDA ,  Makoto YAMAKI

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/03

Abstract: A light control film is capable of gradually changing the in-plane transmittance and thereby adding an in-plane gradation between light and dark. A light control film includes: a first electrode and a second electrode disposed facing each other; a light control material disposed between the first electrode and the second electrode and changing the transmittance in accordance with the potential difference between the first electrode and the second electrode; and a potential gradient forming part for providing the gradient of the potential difference in the extension direction of the first electrode and the second electrode.

公开(公告)号：US20180307077A1

公开(公告)日：2018-10-25

申请号：US15775438

申请日：2016-11-11

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Keisuke MIURA ,  Yusuke NUSHI ,  Yusuke HAGIWARA

IPC: G02F1/1339 ,  G02F1/1337 ,  G02F1/137 ,  E06B9/24 ,  E06B3/67

CPC classification number: G02F1/13394 ,  B60J1/001 ,  B60J3/04 ,  E06B3/6722 ,  E06B9/24 ,  E06B2009/2417 ,  E06B2009/2464 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/1339 ,  G02F1/13725 ,  G02F2001/13398

Abstract: The present invention is to enable avoidance of a reduction in external appearance quality, and stable driving, and prevent diffracted light from being discerned by avoiding a reduction in transmittance and a deterioration in liquid crystal alignment. A light control film is provided with: a first laminate in which an alignment layer is provided; a second laminate in which an alignment layer is provided; a liquid crystal layer which is sandwiched between the first and second laminates and contains liquid crystal molecules; a spacer disposed in the liquid crystal layer to hold the thickness of the liquid crystal layer; and electrodes provided in the first laminate and/or the second laminate, and controls transmitted light by controlling the alignment of the liquid crystal molecules driven by the electrodes. The proportion of an area occupied by the spacer per unit area in a light controllable-region of the liquid crystal layer is 0.1-10%.

公开(公告)号：US20230152634A1

公开(公告)日：2023-05-18

申请号：US18088973

申请日：2022-12-27

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio ISHII ,  Keisuke MIURA ,  Yusuke HAGIWARA

IPC: G02F1/1339 ,  G02F1/1333 ,  B32B17/10 ,  B32B3/08 ,  G02F1/1335

CPC classification number: G02F1/13394 ,  G02F1/133388 ,  B32B17/10005 ,  B32B3/085 ,  B32B17/10036 ,  B32B17/10467 ,  B32B17/10761 ,  G02F1/133512 ,  B32B17/10293 ,  B32B17/10302 ,  B32B17/10348 ,  B32B17/10504 ,  B32B17/10788

Abstract: Provided are a laminated glass which has a reduced occurrence of voids and accumulation of liquid crystal, and a production method for the laminated glass. Also provided is a laminated glass which can prevent deterioration of a sealing material. This laminated glass 1 comprises a first glass plate 33A, a first intermediate film 31A, a liquid crystal film 10, a second intermediate film 31B, and a second glass plate, which are layered and disposed in this order, wherein the first glass plate 33A and the second glass plate 33B have a larger outer shape than that of the liquid crystal film 10, and a spacer 32 is provided in at least a portion of a region which is interposed between the first glass plate 33A and the second glass plate 33B and in which the liquid crystal film 10 is not disposed.