| 摘要 |
PROBLEM TO BE SOLVED: To prevent etching unevenness in the chemicals processing process of panel inner surface from occurring while securing the work safety in the cleaning method using chemical for panel inner surface of a cathode-ray tube. SOLUTION: This is a method to clean and process by spraying chemicals such as hydrofluoric acid or the like from numerous nozzles onto the panel inner surface. Since the panel is rocked during the chemical is spray to contact the panel, the positions on the panel at which the chemicals sprayed from numerous nozzles hit are also rocked without hitting the same position thereon. Thus, the spray contact pressure on the whole panel surface is equalized, and the whole panel inner surface is etched almost evenly to solve an etching unevenness problem.
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