Patent ID: 7674148

Claim:
A method for tensioning a shadow mask comprising: a) positioning a first side of a shadow mask into contact with the lower half of a tensioning frame; b) positioning an upper half of the tensioning frame into contact with a second side of the shadow mask; c) clamping the upper half of the tensioning frame to the lower half of the tensioning frame to form a tensioning frame, rigidly clamping the shadow mask between the two tensioning frame halves; d) elevating the temperature of the tensioning frame, causing the tensioning frame to expand and place the shadow mask in tension; e) positioning a lower half of a mounting frame into contact with the first side of the shadow mask in the tensioning frame while the tensioning frame is at an elevated temperature, where the tensioning frame is larger that mounting frame; f) positioning an upper half of the mounting frame into contact with the second side of the shadow mask while the tensioning frame is at an elevated temperature; g) clamping the upper half of the mounting frame to the lower half of the mounting frame, rigidly clamping the shadow mask between the two mounting frame halves while the tensioning frame is at an elevated temperature; and h) unclamping the upper tensioning frame half from the lower tensioning frame half and removing the upper and lower tensioning frame halves while the tensioning frame is at an elevated temperature.