公开(公告)号：US20220342135A1

公开(公告)日：2022-10-27

申请号：US17764466

申请日：2020-09-30

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Yoshiko TANAKA ,  Shosei KUBOTA ,  Norio ISHII ,  Takashi KURODA ,  Hiroaki SEGAWA ,  Akinobu USHIYAMA

IPC: G02B5/30 ,  G02F1/13363 ,  H01L51/52

Abstract: Provided are an optical biaxially stretched plastic film, a polarizing plate, and an image display device that can suppress blackouts when viewed with polarized sunglasses, polarized goggles or the like without increasing the in-plane phase difference. In addition, a method for selecting an optical biaxially stretched plastic film is provided.
The optical biaxially stretched plastic film has a region satisfying condition 1 and condition 2 below:
the difference between a luminance obtained in a specific measurement 1 and a luminance obtained in a specific measurement 2 (L1.n−L2.n) is calculated at each of 100 measurement points, and the “luminance difference variation 3σ” calculated from the luminance differences at the 100 measurement points is 100 or more; and the in-plane phase difference (Re) is 2500 nm or less.

公开(公告)号：US20250130359A1

公开(公告)日：2025-04-24

申请号：US19000166

申请日：2024-12-23

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：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：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：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.

公开(公告)号：US20220105710A1

公开(公告)日：2022-04-07

申请号：US17423398

申请日：2020-01-23

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Norio ISHII ,  Nobuyuki OMOKAWA

IPC: B32B17/10 ,  G02F1/1333

Abstract: A manufacturing method for a light modulating device includes preparing a first laminated body including a first glass sheet, preparing a second laminated body in which a second glass sheet, a second interlayer, and a light modulating cell are laminated, and bonding the first laminated body and the second laminated body.

公开(公告)号：US20200004088A1

公开(公告)日：2020-01-02

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：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.