US 12,111,556 B2
Multi-segment electro-optic apparatus and control methods
Robert R. Turnbull, Holland, MI (US); David A. Blaker, Holland, MI (US); Xiaoxu Niu, Grand Rapids, MI (US); Leroy J. Kloeppner, Jenison, MI (US); Bradley R. Hamlin, Allendale, MI (US); and Michael J. Burns, Hudsonville, MI (US)
Assigned to GENTEX CORPORATION, Zeeland, MI (US)
Filed by Gentex Corporation, Zeeland, MI (US)
Filed on Apr. 6, 2023, as Appl. No. 18/131,599.
Claims priority of provisional application 63/328,001, filed on Apr. 6, 2022.
Prior Publication US 2023/0324758 A1, Oct. 12, 2023
Int. Cl. G02F 1/166 (2019.01); G02F 1/00 (2006.01); G02F 1/1676 (2019.01)
CPC G02F 1/166 (2019.01) [G02F 1/0018 (2013.01); G02F 1/1676 (2019.01)] 20 Claims
OG exemplary drawing
 
1. An electro-optic device comprising:
a first electrode electrically connecting with a power supply circuit;
a second electrode spaced from the first electrode and electrically connecting with the power supply circuit;
an electro-optic medium disposed between the first electrode and the second electrode;
at least one third electrode disposed between the first electrode and the second electrode; and
a control circuit electrically connected to one of the first electrode and the second electrode wherein the control circuit:
monitors a measured control signal of the at least one third electrode; and
adjusts a driving control signal communicated to the one of the first electrode and the second electrode based on the measured control signal and updates a corresponding transmission state of the electro-optic device to a target transmittance.