Color picture tube having improved slit type shadow mask and...

Details Color picture tube having improved slit type shadow mask and... Color picture tube having improved slit type shadow mask and...

H - Electricity

01

J

313/35.16

H01J 29/07 (2006.01)

Patent

CA 1138517

RCA 72,203 Abstract A color picture tube having a slit type apertured mask, wherein the slit apertures are arranged in columns and the apertures in each column are separated by webs, is improved by constructing the mask with portions of full thickness and portions of reduced thickness. The portions of full thickness consist of strips between the aperture columns and islands at the webs. The strips and islands are separated from each other by the portions of reduced thickness. The cross-sectional area of each web is substantially uniform across the web.

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