Color picture tube having curved slit column pattern

Details Color picture tube having curved slit column pattern Color picture tube having curved slit column pattern

H - Electricity

01

J

313/35.16

H01J 29/07 (2006.01)

Patent

CA 1230914

Abstract The present invention provides an improvement in a color picture tube having a line-type phosphor screen and a slit-type apertured shadow mask of similar contour. The transmission-limiting portions of the mask apertures are arranged in columns, and the apertures within each column are separated by webs. The improvement comprises the columns passing through a center portion of the mask being substantially straight, and the columns on both sides of the center portion of the mask being convexly curved toward the center portion and increasing in curvature with distance from the center portion.

481643

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