Display tube having a post-deflection structure and method of ma

Details Display tube having a post-deflection structure and method of ma Display tube having a post-deflection structure and method of ma

1988-09-12

1990-06-26

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313429, 445 47, 445 49, H01J 2980

Patent

active

049374915

ABSTRACT:
For fine-(for example post-)deflection of electron beams is a display tube, particularly of the flat, thin type, electrically insulated deflector plate portions are placed on either side of each beam prior to its reaching the phosphor screen. By choosing a special mask aperture geometry, a deflector is produced after a plate portion is bent out of the mask plane. By combining two masks (plates) with bent plate portions, an electrode structure is obtained having two separate flat deflector aperture electrode pairs per electron beam.

REFERENCES:
patent: 4560898 (1985-12-01), Knapp et al.

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