Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1977-01-13
1978-01-03
Segal, Robert
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313355, 313403, H01J 2907, H01J 1930
Patent
active
040669238
ABSTRACT:
In a color display tube of the post focusing type the color selection means comprise a first and a second system of lens electrodes. A lens electrode belonging to the first system is connected by means of a diffusion bond to one of the metallized sides of an electrically insulating member which is metallized on two sides. A lens electrode belonging to the second system is formed either by the other metallized side of the insulating member or is secured to said other metallized side of the insulating member also by means of a diffusion bond. The color selection means are manufactured by starting from an insulating foil which is metallized on two sides and which is connected on the one side by a diffusion connection to each lens electrode belonging to the first system and which is provided on the other side with each electrode belonging to the second system, the desired apertures in the color selection means being obtained by locally etching away at least the metallized foil by means of a selective etching process.
REFERENCES:
patent: 3051861 (1962-08-01), Ridgeway
patent: 3297902 (1967-01-01), Beggs
patent: 3777206 (1973-12-01), Armstrong
Segal Robert
Trifari Frank R.
U.S. Philips Corporation
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