Anti-Static Tin Oxide Film for CRT Faceplate
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
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.