Shadow mask type color CRT

Details Shadow mask type color CRT Shadow mask type color CRT

1989-09-25

1990-11-27

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

H01J 2907

Patent

active

049738798

ABSTRACT:
A shadow mask type color CRT has a plurality of electron beam holes and a plurality of bridges for dividing the holes in the axial direction thereof. The electron beam projected from an electron gun passes the electron beam holes and stimulates the fluorescent screen behind the holes so as to cause the fluorescent screen to emit light. By the arrangement of the bridges in such a manner as to deviate the position of each bridge by the distance U from the intersection of an imaginary lattice, the defect such as fringes including a Moire on the screen caused by the regular arrangement of the bridges in the prior art is eliminated. The distance U is determined by a probability distribution function Q(U) which satisfies Moire regulating conditions. The shadow mask type CRT is used as a CRT commonly for two different systems using a different number of scanning lines.

REFERENCES:
patent: 3766419 (1973-01-01), Barbin
patent: 4210842 (1980-07-01), Nakayama et al.
patent: 4326147 (1982-04-01), Nakayama et al.
patent: 4741425 (1988-06-01), Barten
patent: 4766341 (1988-08-01), Nakamura

Affiliated with

Also associated with

Rating

Shadow mask type color CRT does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shadow mask type color CRT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shadow mask type color CRT will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1033867