Patent ID: 6294864
Filing Date: 2001-09-25
Classification: H01J

Abstract:
A color cathode ray tube comprising a generally rectangular shadow mask structure including a shadow mask, a support frame for holding the shadow mask, shadow mask springs for holding the support frame inside a panel having a phosphor screen adjacent thereto, and panel pins for holding the shadow mask structure, wherein each of the shadow mask springs comprise an L-shaped base plate and a joined plate secured to one end of the base plate, the base plate has a phosphor screen side metal portion and an electron gun side metal portion, the phosphor screen side metal portion has a smaller thermal expansion coefficient than a thermal expansion coefficient of the electron gun side metal portion, an other end of the base plate is secured to a side of the support frame, the joined plate is engageable with one of the panel pins, and the secured portion of the one end of the base plate and the joined plate is located at a position closer to the phosphor screen than the secured portion of the other end of the base plate and the support frame.