Shadow mask with border pattern
AssigneeNorth American Philips Corporation
InventorLawrence D. Knox
Life of this patent
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Abstract
A shadow mask adapted for tensioned mounting in a flat faced color CRT is characterized by having a pattern of slits in the border regions of the mask in order to provide uniform distribution of tensile stresses across the mask when mounted in the CRT, resulting in improved mechanical and thermal behavior, and enabling the separate fabrication of the mask and display screen of the CRT.
Claims6
A shadow mask adapted for tensioned mounting in a flat faced color CRT, the mask comprising a central apertured viewing area and a surrounding border region, the border region comprising mounting strips connected to the viewing area by a plurality of legs, the legs mutually parallel and orthogonal to an adjacent edge of the viewing area, the border regions being relatively stiff in tension and relatively flexible in transverse bending.
Dependencies are inferred from the claim text.