Browse Prior Art Database

Gas Panel Sealant

IP.com Disclosure Number: IPCOM000078508D
Original Publication Date: 1973-Jan-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Beckerman, M: AUTHOR [+3]

Abstract

In fabricating a gas panel display/storage apparatus, conductors are deposited on two glass plates or substrates and a layer of glass dielectric formed over the conductors, to insulate the conductors from direct contact with the gas. The two plates are then sealed at their edges and filled with gas to form the gaseous discharge display panel. Conventional methods of sealing include either epoxy seals or the application of a glass frit binder, placed between the two glass plates of the gas panel. Normally, spacer rods of hard glass are employed to control the spacing between the respective plates during the sealing process.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 2

Gas Panel Sealant

In fabricating a gas panel display/storage apparatus, conductors are deposited on two glass plates or substrates and a layer of glass dielectric formed over the conductors, to insulate the conductors from direct contact with the gas. The two plates are then sealed at their edges and filled with gas to form the gaseous discharge display panel. Conventional methods of sealing include either epoxy seals or the application of a glass frit binder, placed between the two glass plates of the gas panel. Normally, spacer rods of hard glass are employed to control the spacing between the respective plates during the sealing process. Since the sealing temperature is approximately 500 degrees C to 525 degrees C and the binder must be baked out of the seal to minimize entrapment of organics from the binder material within the panel, panels with overcoated reflowed dielectric may experience devitrification or crazing of the dielectric at the above specified temperature.

A method of providing a glass seal while eliminating the crazing problem associated with the conventional sealing oven cycle operates as follows. When the panel components, plates, conductors and dielectric are assembled in the manner described above, strips of sealing material are placed around the outer edges of the panel plates 1, 3. The sealing material is composed of an outer layer of seal frit 5, a hard-glass spacer 7 and a heating strip 9 within the spacer
7. This assembly is placed in an oven and then raised to a temperature of approximately 400 degrees C. Power is then applied to the heating strip 9 to locally raise the temperature to that required to reflow the...