| 摘要 |
PURPOSE: A supporter of a shadow mask for a color cathode ray tube is provided to perform a surface treatment of a rail made of fosterite with a glassy glaze to supply a surface property similar to a glass, thereby preventing a breaking of a panel. CONSTITUTION: A supporter of a shadow mask for a color cathode ray tube has a rail(6a) made of a ceramic material to support the shadow mask. A frit ceramic glaze is coated on a surface of the rail. The frit ceramic glaze is crystallized after being melted at a temperature of 450-1500°C or non-crystallized after being melted at a temperature of 700-1500°C. In the frit ceramic glaze to be crystallized, if the frit ceramic glaze is melted at a temperature of 450°C and below, the ceramic glaze is not used in a cathode ray tube fabricating process. And if the frit ceramic glaze is melted at a temperature of 1500°C and more, a composition of the fosterite is changed.
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