Method of coating phosphors on fluorescent lamp glass
AssigneeGTE Products Corporation
InventorsArunava Dutta, Lenoard V. Dullea
Life of this patent
Estimating the term…
Abstract
In process for forming a coating of phosphor particles on a fluorescent lamp glass, a polymer is deposited on the phosphor particles and the phosphor particles are entrained in a carrier gas with the polymer in a non-adhering state, and then the phosphor particles are coated on the fluorescent lamp glass with the polymer in an adhering state for retaining the phosphor particles on the fluorescent glass and, the coated fluorescent glass is heated to a temperature above the decomposition temperature of the polymer for removing the polymer and to form a coating of phosphor particles on a fluorescent lamp glass.
Claims34
A method for forming a coating of phosphor particles on a fluorescent lamp glass comprising entraining polymer treated phosphor particles in a carrier gas, said polymer having a decomposition temperature and a polymer softening temperature, heating the fluorescent lamp glass to a temperature above the polymer softening temperature for adhering the polymer to the fluorescent lamp glass, depositing the polymer treated phosphor particles on the fluorescent lamp glass and forming a coated fluorescent lamp glass, heating the coated fluorescent lamp glass to a temperature above the decomposition temperature of the polymer for removing the polymer and forming a coating of phosphor particles on a fluorescent lamp glass.
Dependencies are inferred from the claim text.