05076673 is referenced by 404 patents and cites 14 patents.

An electrochromic assembly useful for rearview mirrors, windows, vehicle sunroofs, information displays, office partitions and other structures which allows prolonged coloration substantially indefinitely without voltage or concentration gradient induced color segregation. The assembly includes a pair of optically aligned, electrochromic devices defined by at least one transparent sheet, first and second layers of electrochromic material adjacent opposing surfaces of the sheet, the transmittance of said layers being variable when an electrical field is applied, and electrical conductors for applying such an electrical field. Electrical energy is switched alternately from one device to the other for short periods of time while the remaining device is alternately bleached. The switching can continue cyclically for any desired period. A reflective coating may be included to allow operation as a dimming mirror. Anti-reflection and index of refraction matching coatings may be included to enhance transmission. Electrical energy may also be applied to both devices simultaneously to provide a deeper level of coloration than is possible from either device alone.

Title
Prolonged coloration electrochromic assembly
Application Number
7/565660
Publication Number
5076673
Application Date
August 10, 1990
Publication Date
December 31, 1991
Inventor
Kenneth L Schierbeek
Zeeland
MI, US
Niall R Lynam
Holland
MI, US
Agent
Price Heneveld Cooper DeWitt & Litton
Assignee
Donnelly Corporation
MI, US
IPC
G02F 1/01
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