Glow Discharged Activated Field Assisted Bonding
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
In the fabrication of certain devices such as plasma display panels, metal is deposited or otherwise formed on glass plates as the initial process step. Improved adherence of deposited metal upon glass substrates will be obtained by applying a potential with the deposited metal positive and the insulating glass plate negative at a temperature at which the insulator is slightly conductive. This technique is designated field-assisted bonding. In the case of conventional soda-lime plated glass plates, this temperature is in excess of 200'C. Glow discharge cleaning is a common process in vacuum deposition and is accomplished by the use of a high DC voltage negative electrode that is actuated in the vacuum chamber when the chamber is backfilled with an inert gas, usually argon, at a pressure between 10 and 100 microns.