Abstract:
An improved method of cleaning a glass substrate prior to evaporation of chrome metal electrodes upon it. The substrate is cleaned by the use of glow discharge in a wet active gas, preferably air or forming gas.
Abstract:
A substrate to be coated by RF sputtering is partially or completely surrounded by a target, which has a similarly shaped cathode surrounding and supporting the target. The target and the cathode may be formed of a pair of parallel plates or a hollow member. By controlling the pressure of the gas within the partially evacuated chamber in which at least the target is disposed and/or the spacing of the cathode plates or the size and geometrical configuration of the hollow member, a single common negative glow can be produced by either having the negative glow from the two parallel cathode plates overlap or touch each other or having a single negative glow within the hollow member.
Abstract:
A water removable material ordinarily used as a brazing stop-off - i.e. to restrict the flow of a molten metal and thereby to prevent wetting of an underlying surface in a brazing or soldering process - has been found useful presently as a means to prevent oxidation of, or other damage to, terminal metallurgy of metallized glass components during protracted periods of baking, gas-filling and glass sealing processing incidental to fabrication of gas discharge display panel assemblies. The subject baking, gas-filling and sealing processing involves hours or even days of variant temperature treatment, which should be distinguished from seconds or at most minutes of brazing treatment. The protective function required of the water removable coating during this prolonged processing period is considered unique and eliminates certain application and removal process operations associated with the use of other protective media (e.g. sintered glass frit).