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Browse Prior Art Database

Spacer Rod Encapsulation

IP.com Disclosure Number: IPCOM000081351D
Original Publication Date: 1974-May-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Chaikin, A: AUTHOR [+3]

Abstract

In fabrication of a gaseous discharge display panel, a pair of glass substrates 1 and 3 have orthogonal conductors 5 and 7 formed thereon, and a layer of dielectric 8 and 9 is formed over each of the conductor arrays 5 and 7, respectively. Ionization of selected sites in the display is caused by selective energization of pairs of orthogonal conductors 5 and 7, which cause ionization of the gas within the chamber 11 at the selected sites. One of the critical parameters in operating a gaseous discharge display panel, is the spacing between the surfaces of dielectric members 8 and 9 in direct contact with the gas.

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Spacer Rod Encapsulation

In fabrication of a gaseous discharge display panel, a pair of glass substrates 1 and 3 have orthogonal conductors 5 and 7 formed thereon, and a layer of dielectric 8 and 9 is formed over each of the conductor arrays 5 and 7, respectively. Ionization of selected sites in the display is caused by selective energization of pairs of orthogonal conductors 5 and 7, which cause ionization of the gas within the chamber 11 at the selected sites. One of the critical parameters in operating a gaseous discharge display panel, is the spacing between the surfaces of dielectric members 8 and 9 in direct contact with the gas.

Spacer rods have been used in the art to maintain a uniform pre-determined space between the substrates 1 and 3, and thus between the dielectric surfaces, but such spacers, even if rectangularly shaped, tend to move during fabrication of the device when no means is provided to restrain the movement. Such movement is undesirable, since only certain locations on the panel such as the space between characters are suitable for spacer locations.

In the illustrated embodiment, rectangular spacers 13 and 15 are dipped into a suspension vehicle consisting of a liquid dielectric material, and positioned on the substrate 1 with a minimum amount of the suspension vehicle adhering thereto. The suspension vehicle functions as an epoxy to cause the rods to be maintained in the selected position during the fabrication process. The dielectric layers 8 and 9 are initially formed by spraying...