Browse Prior Art Database

Ruggedized Tubulation Seal for Gas Display Panel

IP.com Disclosure Number: IPCOM000080801D
Original Publication Date: 1974-Feb-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Shapiro, JB: AUTHOR

Abstract

In the fabrication of a gaseous display panel device, two glass substrates having dielectric coated conductor arrays are positioned such that the conductors are substantially orthogonal to each other, and sealed about their edges to form a gas container or envelope. The gas is applied under appropriate pressure through a tubulation to the panel, and the tubulation member represents one of the more fragile components of the gaseous display panel assembly. A method for increasing the mechanical strength of the tubulation and providing a better seal between the tubulation member and the panel assembly is constructed as follows.

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Ruggedized Tubulation Seal for Gas Display Panel

In the fabrication of a gaseous display panel device, two glass substrates having dielectric coated conductor arrays are positioned such that the conductors are substantially orthogonal to each other, and sealed about their edges to form a gas container or envelope. The gas is applied under appropriate pressure through a tubulation to the panel, and the tubulation member represents one of the more fragile components of the gaseous display panel assembly. A method for increasing the mechanical strength of the tubulation and providing a better seal between the tubulation member and the panel assembly is constructed as follows.

Referring to the drawing, a gaseous display panel assembly includes a glass substrate 1 having an opening 3 for insertion of an exhaust tubulation 5. A wafer of tubulation hard seal glass 7 is initially fitted over the exhaust tubulation 5, and functions to maintain the tubulation member in position during the sealing process. A glass disc 9 of the same glass composition as the substrate 1 having an inner diameter larger than the outer diameter of the tubulation 5 is then positioned over the glass wafer 7.

When the assembly is placed in an oven for the sealing cycle, the wafer of seal glass 7 which may be the same composition as the peripheral sealant in the panel assembly reflows. In addition to providing a seal below the surface of the substrate 1, seal glass 7 reflows upward under pressure a...