Patent ID: 6734611
Filing Date: 2004-05-11
Classification: H01J

Abstract:
A tension mask assembly for use in a CRT comprising:a mask support frame formed by a pair of long sides and a pair of short sides attached together at their ends, the long sides extending parallel to a central major axis and the pair of short sides extending parallel to a central minor axis; and, a pair of support blade members for securing a tension mask, each of said support blade members being attached to a respective one of the long sides at a central attachment point, the support blade members each including a plurality of first sides formed of a first coefficient of thermal expansion material and defining a first centroid, and further including a second side, the second side being secured to the first sides and formed of a second coefficient of thermal expansion material and defining a second centroid, the first and second centroid being generally defined by a adjacent cross-sections of the first sides and second side of said each of the support blade members, the first and second centroid separated at a predetermined distance from each other along the minor axis whereby the first and second centroids remain in alignment during thermal deflection of the support blade members.