公开(公告)号：US10684515B2

公开(公告)日：2020-06-16

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 ,  E06B3/67 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/133 ,  G02F1/137 ,  G02F1/1335 ,  G02F1/1343 ,  E06B3/663 ,  E06B9/24

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：US11567373B2

公开(公告)日：2023-01-31

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 ,  G02F1/1333 ,  B32B17/10 ,  B32B3/08 ,  G02F1/1335

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：US11604385B2

公开(公告)日：2023-03-14

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 ,  G02F1/1333 ,  B32B17/10 ,  B32B3/08 ,  G02F1/1335

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：US11320703B2

公开(公告)日：2022-05-03

申请号：US16320012

申请日：2017-07-25

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio Ishii ,  Tomoya Kawashima

IPC: G02F1/1343 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1337 ,  G02F1/137

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：US11243440B2

公开(公告)日：2022-02-08

申请号：US16471685

申请日：2017-12-22

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Yusuke Nakamura ,  Satoru Nishima ,  Norio Ishii

IPC: G02F1/1337 ,  G02F1/1339

Abstract: A light control member exhibits strong adhesion between an alignment layer and a bead spacer and includes: a first and second laminate with a substrate and an alignment layer, and which is arranged so that the alignment layer thereof faces the alignment layer of the first laminate; a liquid crystal layer between the first laminate and the second laminate, and the alignment is controlled by driving electrodes on at least one of the first laminate and the second laminate; and a plurality of bead spacers which are arranged within the liquid crystal layer. This light control member is also characterized in that: at least one of the alignment layer of the first laminate and the alignment layer of the second laminate has a plurality of projections that protrude toward the liquid crystal layer; and at least some of the bead spacers are held by the projections.

公开(公告)号：US11619839B2

公开(公告)日：2023-04-04

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 ,  B32B17/10 ,  B32B37/06 ,  G02F1/1343

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：US10732464B2

公开(公告)日：2020-08-04

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 ,  G02F1/1337 ,  E06B3/66 ,  E06B9/24 ,  G02F1/1343

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：US12216302B2

公开(公告)日：2025-02-04

申请号：US17764456

申请日：2020-09-30

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Shosei Kubota ,  Yoshiko Tanaka ,  Norio Ishii ,  Takashi Kuroda ,  Hiroaki Segawa ,  Akinobu Ushiyama

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/13363

Abstract: Provided is an optical film that can suppress rainbow unevenness when viewed with the naked eyes without increasing the in-plane phase difference. The optical film has a low-refractive index layer on a plastic film, the plastic film is a biaxially stretched plastic film with an in-plane phase difference of 2500 nm or less, the low-refractive index layer is located on the outermost surface, and the optical film has a region in which ΔEab satisfies specific conditions, wherein the ΔEab is calculated from the differences between the L* value, the a* value, and the b* value obtained by measuring a laminate 1 including the optical film, the polarizer, and the surface light source under specific conditions and the L* value, the a* value, and the b* value obtained by measuring a laminate 2 including the polarizer and the surface light source under specific conditions, respectively.

公开(公告)号：US12019337B2

公开(公告)日：2024-06-25

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 ,  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：US11281054B2

公开(公告)日：2022-03-22

申请号：US16320012

申请日：2017-07-25

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio Ishii ,  Tomoya Kawashima

IPC: G02F1/1343 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1337 ,  G02F1/137

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.