Cathode-ray tube display unit and method of making the same

Details Cathode-ray tube display unit and method of making the same Cathode-ray tube display unit and method of making the same

1993-04-05

1995-09-05

Yusko, Donald J.

Electric lamp or space discharge component or device manufacturi

Process

Combined, e.g., with shaping of lamp or device envelope

445 8, 313477R, H01J 900

Patent

active

054474604

ABSTRACT:
There are provided a cathode-ray tube display unit which can be manufactured with reduced weight and cost and which can have a screen plane flattened without the use of any metal band, and a method of making the same. The screen panel is previously deformed by the use of a jig and then sealingly connected to a funnel. After the jig has been removed, the interior of the display tube body is extracted to form a vacuum. The display tube body is distorted by the extraction, but such a distortion can be corrected by deformations previously applied to the display tube body. Thus, the screen plane can be flattened without the use of any metal band.

REFERENCES:
patent: 4206534 (1980-06-01), Amstutz et al.
patent: 4415932 (1983-11-01), Rogers
patent: 5188553 (1993-02-01), Dougherty

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