Patent ID: 7420186
Filing Date: 2008-09-02
Classification: G03B

Abstract:
1. A process for preparation of the phosphor panel formed on a substrate by a gas phase-accumulation method, wherein the phosphor layer comprises a large number of phosphor columns standing parallel to each other, in which the phosphor columns have a mean diameter in the range of 0.1 to 50 μm at a top surface thereof, and there are no phosphor columns having a diameter larger than 200 μm at the top surface, comprising the steps of: placing, in a vacuum evaporation-deposition apparatus, a container containing an evaporation source containing phosphor or a constitutional materials thereof, evacuating the evaporation-deposition apparatus to set an inner atmosphere thereof at a pressure in the range of 0.1 to 10 Pa, preheating the container to melt whole evaporation source at the above-mentioned pressure range, and vaporizing the evaporation source to deposit on a substrate a phosphor layer having predetermined thickness.