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Evaporable Glass Composition

IP.com Disclosure Number: IPCOM000082151D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Brownlow, JM: AUTHOR

Abstract

The deposition of glass films in a vacuum is difficult, because of excess gas evolution from the molten source and poor adhesion. Typically, a low (30x10/-7/) expansion Schott glass has been used to overcome these difficulties.

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Evaporable Glass Composition

The deposition of glass films in a vacuum is difficult, because of excess gas evolution from the molten source and poor adhesion. Typically, a low (30x10/-7/) expansion Schott glass has been used to overcome these difficulties.

In certain applications, however, an evaporable high (90x10/-7/) expansion glass is needed. For example, in the fabrication of gas panel displays, an evaporable high-expansion glass is needed which is compatible with the substrate plate glass used.

The following high barium-borosilicate glass system has been found to perform well in evaporation processes, such as e-beam evaporation processes, and has high expansion (approximately 90x10/-7/). mol %.

SiO(2) 48

BaO 28

B(2)O(3) 20

Na(2)O 4.

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