| abstract |
This invention is a method for preventing diffusion of small, monovalent metal ions out of a substrate which contains such ions comprising plasma enhanced chemical vapor depositing a carbon modified metal oxide layer onto the substrate at a temperature of less than about 550 °C, preferably at temperatures less than 500 °C, and more preferably less than about 400 °C wherein the carbon modified metal oxide comprises Me, O, C, and H covalently bonded to one another, where Me is selected from Silicon, Titanium, and Cerium; the mole ration of O to Me is 1:1 to 2.4:1; the mole ratio of C to Me is 0.1:1 to 4.5:1; and the mole ratio of H to Me is 0:1 to 8:1. This invention is also an electroactive display device comprising a sodium containing glass substrate with the carbon modified metal oxide layer as a protective inner coating. |