Abstract:
A color cathode ray tube includes a screen, a shadow mask and an electron gun section. The electron gun section comprises a plurality of separate unit electron guns. The screen is divided into a plurality of subregions each of which is scanned by an individual unit electron gun. Each unit electron gun emits a single electron beam and is associated with an individual main deflection device for causing the beam to scan the electron gun's particular subregion of the screen and subsidiary deflection means for effecting electron beam color switching.
Abstract:
An evacuated envelope having a plurality of spaced, parallel support walls extending between and substantially perpendicular to flat substantially parallel front and back walls to provide a plurality of parallel channels extending along the front and back walls. The front and back walls and the support walls are of an electrically insulating material, typically glass. Compressed between each of the support walls and the front wall is a metal strip which serves as the tip of the support wall and which extends along the entire length of the support wall. Each tip is tapered in thickness from a thickness substantially equal to the thickness of the support wall at the support wall to a thinner thickness at the front wall. Means is provided between each metal tip and either the support wall or the front wall to prevent movement of the tip transversely of the channels. A shadow mask extends across each of the channels and extends between the metal tips and the support walls. The shadow mask is held in proper position with respect to the phosphor screen on the inner surface of the front wall by the metal tips.
Abstract:
A color display tube having a magnetic screening cap provided with four resilient metal plates extending radially in the direction of the corner points of the display screen at the edge of the end of the cap having the smallest diameter. The plates press against the electrically conductive inner coating of the cone and which would otherwise prevent electrons pass between the screening cap and the conductive inner coating of the cone from impinging upon the display screen.