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Anti-Static Tin Oxide Film for CRT Faceplate

IP.com Disclosure Number: IPCOM000043913D
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Wallace, SE: AUTHOR [+2]

Abstract

This article describes a process for forming a substantially transparent, conductive coating on an etched faceplate for a cathode ray tube (CRT) display. The conductive coating is formed by spraying a solution of stannic chloride and alcohol onto the etched glass faceplate at temperatures between 200ŒC and 500ŒC. A conductive film of unintentionally doped tin oxide is formed. The electrical conductivity, the surface roughness and the thickness of the film can be varied as a function of temperature. The conductivity of the coating can be further increased through intentional doping although this is not normally necessary. The tin oxide coating should stand up well to the use of light pens on the etched CRT faceplate.

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Anti-Static Tin Oxide Film for CRT Faceplate

This article describes a process for forming a substantially transparent, conductive coating on an etched faceplate for a cathode ray tube (CRT) display. The conductive coating is formed by spraying a solution of stannic chloride and alcohol onto the etched glass faceplate at temperatures between 200OEC and 500OEC. A conductive film of unintentionally doped tin oxide is formed. The electrical conductivity, the surface roughness and the thickness of the film can be varied as a function of temperature. The conductivity of the coating can be further increased through intentional doping although this is not normally necessary. The tin oxide coating should stand up well to the use of light pens on the etched CRT faceplate. Even if some of the coating is abraded by a light pen, static charge can still flow to ground around the damaged sites.

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