公开(公告)号：US20240337882A1

公开(公告)日：2024-10-10

申请号：US18575959

申请日：2022-06-24

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Takao IKEZAWA ,  Tomoya KAWASHIMA

IPC: G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/134309 ,  G02F1/1347

Abstract: A light control member and a light control device in which a non-electrode region is less visible. A light control film is a light control member having controllable transmissivity and includes: an undivided first common electrode; divided first electrodes; a first liquid-crystal layer disposed between the first common electrode and the first electrodes; an undivided second common electrode; divided second electrodes; and a second liquid-crystal layer disposed between the second common electrode and the second electrodes. First non-electrode lines dividing the first electrodes and second non-electrode lines dividing the second electrodes are arranged at positions not overlapping one another when viewed in the direction normal to the light control film.

公开(公告)号：US20190331947A1

公开(公告)日：2019-10-31

申请号：US16341988

申请日：2017-10-12

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Yusuke HAGIWARA ,  Yasunori HAYASHIDA ,  Tomoya KAWASHIMA ,  Yukihiro KYOUDEN

IPC: G02F1/1347 ,  G02F1/1335 ,  E06B9/24 ,  B60J3/04 ,  B60J3/00 ,  B32B7/12 ,  B32B17/10 ,  B32B7/023

Abstract: Provided is a laminate which can not only control the amount of external light transmitted, but can also be used as a mirror. A laminate 1 comprises: a first liquid crystal member 100; a reflection type polarizing member 200; and a second liquid crystal member 300. The first liquid crystal member has first liquid crystal cells with changing orientation states, and a first absorption type polarizing member. The first liquid crystal cells can be switched: between a mode where one type of polarized light of the incident light is blocked and the other type of polarized light is transmitted, and a mode where one type of polarized light of the incident light is blocked and the other type of polarized light is shifted and then transmitted; between a mode where the incident light is transmitted as-is, and a mode where one type of the polarized light is blocked and the other type of polarized light is transmitted; and between a mode where one type of polarized light of the incident light is blocked and the other type of polarized light is transmitted, and a mode where one type of polarized light of the incident light is transmitted and the other type of polarized light is blocked. The reflection type polarizing member receives the light transmitted by the first liquid crystal member, transmits one type of polarized light of the incident light, and reflects the other type of polarized light. The second liquid crystal member has second liquid crystal cells with changing orientation states, and a second absorption type polarizing member. When the reflection type polarizing member has transmitted polarized light, the second liquid crystal cells can be switched between a mode where the polarized light is blocked and a mode where the polarized light is transmitted.

公开(公告)号：US20180284514A1

公开(公告)日：2018-10-04

申请号：US15765072

申请日：2016-09-29

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Yusuke NAKAMURA ,  Tomoya KAWASHIMA ,  Kumiko KAMBARA ,  Norio ISHII

IPC: G02F1/1339 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1337 ,  G02F1/137 ,  G02F1/133 ,  E06B3/663 ,  E06B3/67

Abstract: A light-modulating cell includes: a pair of polarizing plates (a first polarizing plate and a second polarizing plate); a pair of electrodes (a first transparent electrode and a second transparent electrode) arranged between the pair of polarizing plates (the first polarizing plate and the second polarizing plate); and a pair of alignment films (a first alignment film and a second alignment film) arranged between the pair of electrodes (the first transparent electrode and the second transparent electrode). A plurality of spacers, which support at least any one of the pair of alignment films and are in two-dimensional contact with at least any one of the pair of alignment films, is provided. At least some of the plurality of spacers have an inconstant distance to another spacer positioned at a closest distance.

公开(公告)号：US20210274137A1

公开(公告)日：2021-09-02

申请号：US17256350

申请日：2019-07-18

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Masahiro GOTO ,  Hiroshi SEKIGUCHI ,  Kumiko KAMBARA ,  Tomoya KAWASHIMA

IPC: H04N9/31 ,  G02F1/1335

Abstract: This reflective screen 10 reflects a part of image light beam projected from an image source LS, to display an image. The reflective screen 10 is provided with: a first optical shape layer 12 which has optical transparency and has a plurality of unit optical shapes 121 arranged on a rear surface thereof; and a reflective layer 13 which is formed in at least some of the unit optical shapes 121 and by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapes 121 are arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

公开(公告)号：US20200271964A1

公开(公告)日：2020-08-27

申请号：US16488807

申请日：2018-03-12

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Makoto YAMAKI ,  Tomoya KAWASHIMA

IPC: G02F1/137

Abstract: A light control film and a light control system, which not only simply change the amount of transmitted light but also can be used for a wider range of applications. This light control film includes a first electrode, a second electrode, a liquid crystal material, and a dichroic dye, and has a guest-host type liquid crystal layer in which light transmittance varies with the potential difference between the first electrode and the second electrode, wherein the liquid crystal layer has a first haze value when the potential difference is a first potential difference, has a second haze value when the potential difference is a second potential difference, and has a third haze value higher than at least the second haze value when the potential difference is a third potential difference between the first potential difference and the second potential difference.

公开(公告)号：US20190243174A1

公开(公告)日：2019-08-08

申请号：US16320012

申请日：2017-07-25

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio ISHII ,  Tomoya KAWASHIMA

IPC: G02F1/1343 ,  G02F1/1337

CPC classification number: G02F1/1343 ,  G02F1/13 ,  G02F1/133711

Abstract: A photochromic system wherein: there are provided a photochromic film and a drive power source; the photochromic film has a liquid crystal layer sandwiched between a first and second laminate, the photochromic film controlling the liquid crystal molecules' orientation of the liquid crystal layer by a VA scheme to control transmitted light; the first laminate is provided with at least a first substrate and electrode; the second laminate is provided with at least a second substrate and electrode; each of the first and second electrode has a sheet resistance of 50-300 Ω/□; the distance from a power feed point to the farthest-away position in the surface of the photochromic film is 1,500 mm or less; and the drive power source supplies a power source for driving by a rectangular wave having a frequency of 240 Hz or less.

公开(公告)号：US20230291876A1

公开(公告)日：2023-09-14

申请号：US18307068

申请日：2023-04-26

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Masahiro GOTO ,  Hiroshi SEKIGUCHI ,  Kumiko KAMBARA ,  Tomoya KAWASHIMA

IPC: H04N9/31 ,  G02F1/1335

CPC classification number: H04N9/3152 ,  G02F1/133555 ,  H04N9/3185

Abstract: This reflective screen 10 reflects a part of image light beam projected from an image source LS, to display an image. The reflective screen 10 is provided with: a first optical shape layer 12 which has optical transparency and has a plurality of unit optical shapes 121 arranged on a rear surface thereof; and a reflective layer 13 which is formed in at least some of the unit optical shapes 121 and by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapes 121 are arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

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).