Patent ID: 6873096
Filing Date: 2005-03-29
Classification: H01J

Abstract:
1. A picture tube having a mask frame assembly for securing a tension mask inside said picture tube, the mask assembly comprising: a support blade structure formed of a material having a first coefficient of thermal expansion; an insert member formed of a material having a second coefficient of thermal expansion and a thickness which is greater than a thickness of the tension mask, the insert member having a plurality of apertures positioned along the length of the insert member and a mask receiving edge to which said tension mask is applied; and, fastening portions, at least one fastening portion connecting said insert member to said support blade structure at a generally central location of the insert member and said remaining fastening portions connecting said insert member to said support structure through said apertures whereby the opening of said apertures are dimensioned to have a respective clearance for loosely receiving a respective fastening portion.