Title:
DIMMER
Document Type and Number:
Japanese Patent JP2021184062
Kind Code:
A
Abstract:
To provide a dimmer having higher design.SOLUTION: A dimmer 20 includes a dimming film 1 and a control unit 23. The dimming film 1 is a guest-host type that includes a liquid crystal material and a dichroic dye and has a liquid crystal layer 8 in which transmittance of light changes due to potential difference between two electrodes. In a case of first potential difference, the dimming film becomes a light shielding state, and in a case of second potential difference larger than the first potential difference, becoming a light transmissive state. The dimming film 1 is divided into segments SG1 to SG7. The control unit 23 is capable of individually switching potential difference between the first potential difference and the second potential difference relative to the segments SG 1 to SG 7. When switching the dimming film 1 from the light transmissive state to the light shielding state, the control unit switches potential difference in the segment sequentially from the second potential difference to the first potential difference every predetermined time T along an arrangement direction of the segments SG 1 to SG 7 in order.SELECTED DRAWING: Figure 5
Inventors:
WATARU HIROKI
SAKAMOTO KENICHI
KUBOTA HIROSHI
IKEZAWA TAKAO
SAKAMOTO KENICHI
KUBOTA HIROSHI
IKEZAWA TAKAO
Application Number:
JP2020089862A
Publication Date:
December 02, 2021
Filing Date:
May 22, 2020
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G02F1/13; B60J3/04; E06B9/24; G02B5/00
Attorney, Agent or Firm:
Masayuki Masabayashi
Tetsuo Shiba
Hayashi Ichiyoshi
Tetsuo Shiba
Hayashi Ichiyoshi