H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/35.165
H01J 29/07 (2006.01) H01J 9/227 (2006.01) H01J 29/86 (2006.01)
Patent
CA 1270033
ABSTRACT OF THE DISCLOSURE A front assembly for a color cathode ray tube includes a faceplate having a peripheral sealing area adapted to mate with a funnel, with a centrally disposed phosphor screen. The assembly according to the invention includes a separate shadow mask support structure composed of ceramic material secured to the faceplate inner surface on opposed sides of the screen and within the sealing area for receiving and supporting a foil shadow mask in tension a predetermined distance from the screen. Other configurative aspects include a separate continuous or discontinuous metal cap or strip secured to the support structure for receiving and securing a mask, and a mask support structure comprising four discrete rails composed of ceramic with weldable metal strip means for interconnecting the rails to form a generally rectangular unitary shadow mask support structure. The ceramic may also serve as a "buffer" for compensating for the difference in thermal coefficients of the glass of the faceplate and the metal of the cap or strip.
530028
Dietch Leonard
Fendley James R.
Jarosz John
Strauss Paul
Macrae & Co.
Zenith Electronics Corporation
LandOfFree
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