American Cyanamid Company

Richard H Clasen

Robert D Giglia

Substrates, especially highly thermally expandable materials, such as plastics are adherently coated with a relatively soft layer comprising carbon and thereafter with a relatively harder layer of diamond-like carbon to provide coated articles that are abrasion resistant, electrically insulating, and resistant to chemical attack. If the substrate is transparent, the protectively coated article is transparent too.

Articles coated with adherent diamondlike carbon films

The incorporation of one or more protective layers between the electrochromic material and the polymeric electrolyte in an electrochromic device produces longer lasting, more uniform devices. The further placing of a protective layer between the electrolyte and the counterelectrode yields still better devices.

Electrochromic devices having protective interlayers

The incorporation of a non-electrochromic layer between the electrochromic material and the electrolyte in an electrochromic device produces longer lasting, more uniform devices.

Method for forming a counter-electrode or imaging area in an electro-optical data display and imaging device, and the electrode and imaging areas formed. An electrochromic data display and imaging device may be formed by sandwich arrangement of the imaging area, the counter-electrode area with a suitable layer between. The device exhibits superior electrochromic reversability and improved speed and cell life over prolonged coloration and erase cycles.

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West Redding, CT, United States of America

Richard H Clasen