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Counter Electrode for Electrochromic Display Disclosure Number: IPCOM000047751D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08

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Grigg, MJ Mansbridge, DS Wood, JC [+details]


A counter electrode for an electrochromic display is deposited on the inner face of the cover glass of the display cell. The counter electrode consists of an area of platinum black which has been deposited over a layer of gold on titanium conductor metallurgy. As shown in the figure, a platinum black counter electrode 10 is formed on the underside of the cover glass 11 of an electrochromic cell (not shown). The electrode is within the cell liquid enclosures, as defined by a peripheral 0-ring seal, whose position is indicated by dotted lines 12, but does not overlie the display image area. The counter electrode is connected to external circuitry by means of conductor pattern 13 which passes over the 0-ring. The conductor pattern consists of gold over a titanium adhesion layer.