| 摘要 |
PURPOSE:To improve the adhesive force of graphitized film by coating it on a shadow mask frame and heat-treating it. CONSTITUTION:Graphitized film is coated on the surface of a shadow mask and its support frame by the graphitized film processed 13 and 23, respectively, and heat treatments 14 and 24 are performed by heating it for 0.5-2.0 hours in an atmosphere of 350-500 deg.C or under the weakly acidified atmosphere. Then, the shadow mask support frame is formed by the mask frame and spring assembly process 30. It is important that the above heat treatments 14 and 24 should be performed in the atmosphere no damaging the graphitized film. If they are performed in the reducing atmosphere, it is damaged. This, however, permits the adhesive force of the graphitized film to be improved remarkably, thereby eliminating the need for out paying careful attention to the adhesion of foreign matters. |
