COLOR PICTURE TUBE WITH IMPROVED SYSTEM OF ATTACHMENT OF SHADOW MASK TO BASE Russian patent published in 1999 - IPC

FIELD: color television. SUBSTANCE: color picture tube includes vacuumed glass envelope 10 having rectangular end face surface 12. This surface includes assembly 30 of shadow mask carrying mask 24 made of first metal having first coefficient of thermal expansion and base 32 made of second metal having second coefficient of thermal expansion. First coefficient of thermal expansion is substantially lower than second coefficient of thermal expansion. Shadow mask is connected to base with the aid of number of bimetal elements. One end of each element is attached to base and the other one - to mask. Each bimetal element is manufactured from materials which cause bending of element to value related to coefficient of thermal expansion. EFFECT: invention makes it possible to prevent emergence of deformation or formation of cracks in attachment between bimetal elements and mask. 5 cl, 3 dwg