Method for manufacturing mask for color CRT
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsShigeo Takenaka, Eiji Kamohara, Kazuyuki Seino
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Abstract
A method for manufacturing a mask for a color CRT. The mask comprises a plurality of mask members having a number of apertures for passing electron beems, and being spaced apart. The mask is produced by the steps of bringing the mask members into tight contact with an insulator interposed between their peripheries; fixing them by an adhesive; press forming the entire composite; melting the adhesive; and shifting apart and fixing the mask members at a predetermined distance.
Claims9
A method for manufacturing a mask for a color CRT in which a plurality of flat mask members each of which has a number of apertures in an effective area thereof are formed, and the plurality of mask members are fixed at predetermined distances with the apertures thereof being aligned with each other, comprising the steps of:
- bringing into tight contact and fixing in position at least parts of said effective areas which have said apertures of said flat mask members with an insulator interposed between peripheral portions surrounding said effective areas of said plurality of flat mask members;
- press forming said plurality of flat mask members to provide a predetermined radius of curvature thereto;
- and
- fixing said effective areas in position at said predetermined distances after shifting apart said plurality of mask members.
Dependencies are inferred from the claim text.