Removable screening mount for a tensed mask cathode ray tube

Details Removable screening mount for a tensed mask cathode ray tube Removable screening mount for a tensed mask cathode ray tube

1985-11-22

1988-02-02

Bashore, S. Leon

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313348, H01J 2980, H01J 146

Patent

active

047230894

ABSTRACT:
A novel color selection electrode assembly is utilized in screening a pattern of phosphor areas upon the faceplate of a color cathode ray tube. The faceplate, which is formed of a material having a predetermined temperature coefficient of expansion, has registration affording means. The aforesaid assembly comprises an auxiliary mount formed of a material having a temperature coefficient of expansion greater than that of the faceplate and has a central opening of such span as to enable the mount to surround the periphery of the faceplate. Index bosses, cooperable with the faceplate registration affording means, are detachably secured to the mount. A planar metal foil having a predetermined pattern of apertures and formed of a material having a temperature coefficient of expansion not greater than that of the mount is secured to the mount. The index bosses cooperate with the registration affording means on the envelope to permit repeated precise registrations between the foil and the faceplate to facilitate screening of the phosphor pattern as well as to facilitate mating of the electrode assembly to the faceplate. Finally, the invention contemplates a method of utilizing the electrode assembly for screening a phosphor pattern as well as methods of making a color cathode ray tube having such an electrode assembly.

REFERENCES:
patent: 2905845 (1959-09-01), Vincent
patent: 3638063 (1972-01-01), Tachikawa et al.
patent: 3935496 (1976-01-01), Gijrath
patent: 4069567 (1978-01-01), Schwartz
patent: 4100451 (1978-07-01), Palac

Affiliated with

Also associated with

Rating

Removable screening mount for a tensed mask cathode ray tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Removable screening mount for a tensed mask cathode ray tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removable screening mount for a tensed mask cathode ray tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1637222