公开(公告)号：US20210208437A1

公开(公告)日：2021-07-08

申请号：US17208463

申请日：2021-03-22

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Wataru OHKUBO ,  Masanori SAKAMOTO

IPC: G02F1/133 ,  G02F1/1343 ,  G02F1/137 ,  E06B9/24

Abstract: A light control device including a drive voltage output unit that outputs a drive voltage, a control unit that causes the drive voltage output unit to gradually increase or gradually decrease a magnitude of the drive voltage, a light control sheet including light control units connected in parallel to the drive voltage output unit and formed such that light transmittances of the light control units change according to magnitudes of voltages applied to the light control units, and a voltage dividing circuit which is connected to one of the light control units and divides the drive voltage common to each of the light control units such that the magnitude of the voltage applied to the light control unit connected to the voltage dividing circuit differs from the magnitude of the voltage applied to at least one of other light control units.

公开(公告)号：US20190258103A1

公开(公告)日：2019-08-22

申请号：US16371288

申请日：2019-04-01

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masanori SAKAMOTO ,  Shinobu Sumi ,  Wataru Ookubo

IPC: G02F1/1333 ,  G02F1/133 ,  G02F1/1343 ,  G06F3/0354

Abstract: A light control device including a light control sheet including light control units each reversibly change light transmittance and positioned according to a first arrangement that has a regularity, a detection sheet including detection units each detect external input and positioned according to a second arrangement that has a regularity same as the regularity of the first arrangement, a driving unit that outputs to each of the light control units a change signal for changing light transmittance, and a light control processing unit which associates each of the detection units with at least one of the light control units, and causes the driving unit to output the change signal to the light control unit associated with the detection unit that has detected the external input.