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：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：US20210072571A1

公开(公告)日：2021-03-11

申请号：US16965402

申请日：2019-01-28

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Hiroshi KUBOTA ,  Yusuke HAGIWARA ,  Yasunori HAYASHIDA

IPC: G02F1/137 ,  G02F1/1343 ,  G02F1/1345 ,  E06B9/24

Abstract: A liquid crystal light control apparatus includes a liquid crystal light control film and power supply device that drives liquid crystal light control film. Liquid crystal light control film has a structure wherein liquid crystal layer is sandwiched between paired transparent electrode layers, and used by being adhered to a large transparent member. Power supply device supplies a predetermined AC voltage between terminals a and b of liquid crystal light control film. Condition |Z0|≤α×RF is set where RF is a DC resistance between terminals a and b of liquid crystal light control film, |Z0| is an output impedance between terminals A and B of power supply device, and predetermined coefficient α=0.2. In order to protect power supply device, condition Vp/Imax≤|Z0|≤α×RF is set where Vp is output peak voltage of power supply device and Imax is maximum allowable current.

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.