Cathode ray tube comprising a display screen having an electroco

Details Cathode ray tube comprising a display screen having an electroco Cathode ray tube comprising a display screen having an electroco

1995-08-08

1998-04-21

Patel, Ashok

Electric lamp and discharge devices

Cathode ray tube

Envelope

313478, 313112, 313313, H01J 3100

Patent

active

057421196

ABSTRACT:
The display screen 3 of a cathode ray tube 1 is provided with an electroconductive coating 8 of poly-3,4-ethylene dioxythiophene. The layer 8 has a sheet resistance of 1 k.OMEGA./.quadrature. and a high transmission. The layer 8 provides an effective shield against electromagnetic radiation. The coating can be provided with additional layers of, for example, silicon dioxide to improve the mechanical properties.

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H. Schmidt in J. Non-Crystalline Solids, 63 681-691. Dec. 1985.
J.A. Walker et al, J. Polym, Chem., 26 1285-1294. Dec. 1988.

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