Video display terminal screen

Details Video display terminal screen Video display terminal screen

G - Physics

12

B

358/29, 347/7

G12B 17/02 (2006.01) H04N 5/65 (2006.01)

Patent

CA 1260128

ABSTRACT The invention provides a structure for reducing potentially harmful effects emanating from a video display terminal having a screen on a cathode ray tube. The structure includes a light-transparent first medium proportioned to cover the screen and being of a material capable of absorbing ionizing radiation. An electrically conductive second medium is also proportioned to cover the screen and is sufficiently light transparent to permit normal viewing of visual displays on the screen. The second medium reacts with non-ionizing radiation to dissipate this radiation and a frame is provided to hold the first and second mediums. The frame includes a discharge connection for coupling the second medium to ground to dissipate a charge in use in the second medium.

511267

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