Segmented shadow mask

Details Segmented shadow mask Segmented shadow mask

1979-04-27

1981-03-31

Segal, Robert

Geometrical instruments

Straightedge type

Square and pivoted straightedge

313402, H01J 2907, H01J 3120

Patent

active

042596114

ABSTRACT:
A display device includes an evacuated envelope having a plurality of support walls forming a plurality of parallel channels. A mosaic phosphor screen is deposited on a front wall of the envelope. A segmented shadow mask is mounted in spaced, parallel relation to the screen. A plurality of discrete mask segments are required to cover the screen. Each of the mask segments extends along substantially the full length of the channels. Mounting tabs extend from two oppositely disposed edges of the mask segment parallel to the major dimension of the channels.

REFERENCES:
patent: 4028582 (1977-06-01), Anderson et al.
patent: 4145633 (1979-03-01), Peters et al.

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