Abstract:
In a method for sealing a gaseous display and/or memory device, an unfused, low-softening point glass rod sealant, arranged in a picture frame pattern, together with high-softening point glass spacing rods are positioned between a pair of aligned flat glass plates, and the resulting assembly is placed in an oven enclosure. The assembly is then heated above the softening point of the glass rod sealant which reflows and fuses the plates to establish a gas-filled envelope. As the sealing material softens, the upper plate settles u;on the spacing rods to thus establish a predetermined and uniform spacing within the envelope.
Abstract:
Thin parallel electrical conductors are protected from attack during elevated temperature operations in gas panel fabrications by a method which involves depositing the parallel electrical conductors on a pair of glass plates with the parallel conductors terminating a given distance from the edges of each glass plate whereby each such plate extends beyond the ends of the parallel conductors, and covering the parallel conductors with a protective glass coating which covers completely the top, sides, and ends of each parallel conductor. Since the ends of the parallel conductors are covered completely, they are protected from attack and destruction during subsequent firing operations in the fabrication of a gas panel. After panel fabrication is completed one end of each glass plate may be cut off flush with the ends of the parallel conductors if desired. The protective glass coating is removed around the end or terminal regions of the parallel conductors whereby the exposed portions of the conductors may serve as electrical contacts.
Abstract:
A method is disclosed for the fabrication of a gas panel which includes depositing parallel lines as electrical conductors on a pair of glass plates, providing a protective coating of glass over the parallel lines, placing a sealing material between the glass plates around the periphery thereof, spacing the glass plates a given distance apart, firing the assembly in an oven to seal the glass plates together with a chamber therebetween, evacuating the chamber, filling it with an illuminable gas, and exposing each parallel lines at one end of each glass plate as an electrical contact.
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).
Abstract:
A new method of constructing a gas panel is described which involves passivation of the outer surface of laminated electrical conductors disposed in parallel on glass plates which form a gas panel, spraying a slurry composed of a finely ground glass frit in a suspension vehicle to cover completely the laminated parallel lines on each glass plate, and firing the assembly in an oven to reflow the glass frit thereby to form a protective glass coating over the laminated parallel lines of each glass plate. The glass plates are formed into a panel by separating them a given distance, placing a sealing material between the glass plates around the periphery thereof, and firing the assembly in an oven to seal the glass plates together with a chamber therebetween which is evacuated and filled with an illuminable gas.