Color cathode ray tube and method manufacturing the same

Details Color cathode ray tube and method manufacturing the same Color cathode ray tube and method manufacturing the same

1995-01-20

1997-06-03

Chu, John S.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

430 4, 430313, 313403, G03F 900

Patent

active

056353200

ABSTRACT:
A shadow mask of a color cathode ray tube has a large number of electron beam apertures through which electron beams emitted from the electron gun pass. Bach of the electron beam apertures has a larger opening open to a surface of the shadow mask on a phosphor screen side, and a smaller opening open to a surface of the shadow mask on an electron gun side and communicating with the larger opening. The smaller opening of each of the electron beam apertures located at a peripheral portion of the shadow mask is defined by a wall surface of the shadow mask. The wall surface includes an outward portion which is located outward in a radial direction with respect to a center of the shadow mask and a central-side portion which is located on a central side of the shadow mask. An angle defined by the outward portion and a central axis of the smaller opening is larger than an angle defined by the central-side portion and the central axis of the smaller opening.

REFERENCES:
patent: 4662984 (1987-05-01), Ohtake et al.
patent: 4861422 (1989-08-01), Kudou et al.
patent: 5326663 (1994-07-01), Tanaka et al.
patent: 5411822 (1995-05-01), Ohtake et al.

Affiliated with

Also associated with

Rating

Color cathode ray tube and method manufacturing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color cathode ray tube and method manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color cathode ray tube and method manufacturing the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-390304