Tied slit foil shadow mask with false ties

Details Tied slit foil shadow mask with false ties Tied slit foil shadow mask with false ties

1988-12-02

1990-05-15

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313269, H01J 2907

Patent

active

049260898

ABSTRACT:
A front assembly for a color cathode ray tube is disclosed that includes a glass faceplate that has one its inner surface a centrally disposed phosphor screen. A metal foil shadow mask is mounted in tension on a mask-support structure located on opposed sides of the screen. The mask comprises a series of parallel strips separated by slits, the strips being coupled by widely spaced ties. The mask according to the invention has between the strips one or more false ties extending partially between but not interconnecting adjacent strips. The screen may also have spaced ties interconnecting the grille lines with a periodicity much smaller than that of the mask ties and below an observer's resolution threshold at normal viewing distances. An associated manufacturing process is also described.

REFERENCES:
patent: 2813213 (1957-11-01), Cramer
patent: 2905845 (1959-09-01), Vincent
patent: 3638063 (1972-01-01), Tachikawa
patent: 3894321 (1975-07-01), Moore
patent: 3944867 (1976-03-01), Kaplan
patent: 3989524 (1976-11-01), Palac
patent: 4100451 (1978-07-01), Palac
patent: 4495437 (1985-01-01), Kume
patent: 4686416 (1987-08-01), Dougherty
patent: 4695761 (1987-09-01), Fendley
"Improvements in the RCA Three-Beam Shadow-Mask Color Kinescope," Grimes, 1954, Proceedings of the I-R-E, pp. 315-326.

Affiliated with

Also associated with

Rating

Tied slit foil shadow mask with false ties does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tied slit foil shadow mask with false ties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tied slit foil shadow mask with false ties will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-623222