Browse Prior Art Database

Tubulation for Gas Display Panel

IP.com Disclosure Number: IPCOM000081538D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Landermann, JB: AUTHOR [+2]

Abstract

Described is an improved technique for the preglazed tubulation for gas panel sealing in an inert atmosphere, or less oxidizing atmosphere than air.

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 65% of the total text.

Page 1 of 2

Tubulation for Gas Display Panel

Described is an improved technique for the preglazed tubulation for gas panel sealing in an inert atmosphere, or less oxidizing atmosphere than air.

The previously known preglazing process is as follows. Tubulation tubings are selected to fit into the stepped hole drilled through the glass plate. The tubulation tubings are then preglazed with the gas flame and formed by pressing the viscous sealing glass into the hole, as shown in Figs. 1 through 3. Since the sealing glass for the tubulation is rich in lead oxide, it is highly reducible in the gas flame. Therefore, flame working is not preferable. Further, boron oxide, which evaporates from the sealing glass during the sealing heat cycle may be one of the major contaminants on the active area of the panel, and it is not properly protected in the previous preglazed tubulation. The present technique improves all these points.

This technique consists of the tubulation procedure including (1) flaring the end of the tubulation tubing, (2) dipping this end in the sealing glass melt for preglazing, (3) inserting the end of a rolled metal (Ni, stainless steel, etc.) sheet into the stepped hole of the glass plate, and (4) covering the other end of the rolled metal sheet with the flare of tubulation tubing to hold the tubulation during the heating cycle of sealing, as shown in Figs. 4 through 8.

The present technique can be substituted for the previously known preglazed tubulation without a...