Color picture tube having a shadow mask with a coaling layer

Details Color picture tube having a shadow mask with a coaling layer Color picture tube having a shadow mask with a coaling layer

1984-11-19

1986-12-16

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313408, 313423, 445 47, H01J 2907

Patent

active

046299327

ABSTRACT:
A color picture tube is disclosed, which comprises a phosphor screen, a shadow mask disposed near and facing the screen and having a main surface with a number of apertures, and electron guns for emitting electron beams passing through said apertures to bombard said screen and thereby selectively illuminating phosphors on the screen. The main surface of the shadow mask on the side of the electron guns is provided with a coating layer consisting of a material having a thermal expansion coefficient lower than those of the material of the shadow mask, and relatively low electrical conductivity, whereby doming of the shadow mask and miss-landing of electron beams can be suppressed.

REFERENCES:
patent: 3668002 (1972-06-01), Okabe et al.
patent: 3887828 (1975-06-01), Bathelt
patent: 4065695 (1977-12-01), Van Der Waal
patent: 4427918 (1984-01-01), Lipp
patent: 4442376 (1984-04-01), Van Der Waal et al.

Affiliated with

Also associated with

Rating

Color picture tube having a shadow mask with a coaling layer 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 picture tube having a shadow mask with a coaling layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color picture tube having a shadow mask with a coaling layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-246550