US Patent No. 10,921,656

LIGHT CONTROL MODULE


Patent No. 10,921,656
Issue Date February 16, 2021
Title Light Control Module
Inventorship Tetsushi Yoshida, Taito-ku (JP)
Koichi Makidai, Taito-ku (JP)
Akiko Nagai, Taito-ku (JP)
Assignee TOPPAN PRINTING CO., LTD., Taito-ku (JP)

Claim of US Patent No. 10,921,656

1. A light control module, comprising:a light control sheet including a light control layer, at least one first electrode, and at least one second electrode facing the at least one first electrode with the light control layer formed therebetween; and
a drive circuit configured to apply a voltage to the at least one first electrode and the at least one second electrode, wherein
the light control layer is switchable between a transparent state and an opaque state according to an applied voltage, each of the at least one first electrode and the at least one second electrode comprises a transparent conductive material, the light control sheet has a feeding area for applying a voltage to the at least one first electrode and the at least one second electrode, and the light control sheet is formed such that when the light control sheet receives a voltage that causes a transmittance of the light control sheet to be equivalent to a Munsell value of 90% in a region closest to the feeding area, the light control sheet has a transmittance equivalent to a Munsell value of 50% in a region farthest from the feeding area, where a Munsell value of 100% is a maximum transmittance of the light control sheet,
the light control sheet includes a first wire and a second wire, the first wire being electrically connected to the at least one first electrode and the second wire being electrically connected to the at least one second electrode, and
the first wire is arranged so as to face a position on the at least one second electrode in which the second wire is not arranged.