Browse Prior Art Database

Thin Film Evaporator Gage

IP.com Disclosure Number: IPCOM000051784D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Braen, RC: AUTHOR [+2]

Abstract

In gas panel fabrication, two glass plates are individually fabricated prior to completing the panel. Conductor arrays are formed on each of the glass plates, and coated with a dielectric layer which, in turn, is overcoated with a coating of refractory secondary emissive material, such as magnesium oxide. Both the conductor metallurgy, chrome-copper-chrome, and the magnesium oxide are applied by vapor deposition. In practice, the plates are mounted in a rotating cage during deposition with the glass plates parallel to the axis of cage rotation. During metallurgy deposition, this configuration results in large angles of deposition causing poor adhesion between the plate and metal layers, resulting in the formation of blisters in the areas of high angle deposition.

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

Thin Film Evaporator Gage

In gas panel fabrication, two glass plates are individually fabricated prior to completing the panel. Conductor arrays are formed on each of the glass plates, and coated with a dielectric layer which, in turn, is overcoated with a coating of refractory secondary emissive material, such as magnesium oxide. Both the conductor metallurgy, chrome-copper-chrome, and the magnesium oxide are applied by vapor deposition. In practice, the plates are mounted in a rotating cage during deposition with the glass plates parallel to the axis of cage rotation. During metallurgy deposition, this configuration results in large angles of deposition causing poor adhesion between the plate and metal layers, resulting in the formation of blisters in the areas of high angle deposition. This problem is resolved here by utilizing a modified rotary cage configuration and a method of loading the plates into the cage that inherently decreases the angle of incidence across the plates, whereby blisters are significantly reduced or eliminated during conductor deposition.

In conventional gas panel display configurations, the plates are frequently of differing rectangular dimensions depending on the particular display format. It is assumed in the illustrated embodiment that the front plates are longer than the rear plates.

Fig. 1 illustrates a front view of four pairs of plates, each pair including a front and a back plate, enclosed within a rotary cage 11.

The respective plate pairs positioned front to back in the evaporator are identified as 13, 15, 17 and 19. The metal conductors appl...