Polymeric antistatic coating for cathode ray tubes

Details Polymeric antistatic coating for cathode ray tubes Polymeric antistatic coating for cathode ray tubes

1995-11-17

1998-06-30

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428446, 428447, 428522, 427 64, 427 68, 427 72, 427165, 427167, 427240, 313466, 313478, 313479, H01J 2928, B32B 2700

Patent

active

057731500

ABSTRACT:
A high molecular weight, i.e., molecular weight of 90,000-750,000, conductive polymer soluble in both water and alcohol is mixed with a solution of water, alcohol, tetraethoxysilane (TES), and nitric acid (HNO.sub.3) to provide an antistatic coating for a glass display panel of a cathode ray tube (CRT) for grounding static charge on the panel. Conductive polymers such as of polyaniline mixed with either polystyrene sulfonic acid or polyacrylic acid in a molecular ratio of 1:1 or 3,4 polyethylenedioxythiophene added to polystyrenesulphonate in a molecular ratio of 1:1 form a conductive complex which when mixed with a solution of water, alcohol, TES and HNO.sub.3 provides a coating solution with a resistivity in the range of 10.sup.7-10.sup.9 ohm/cm.sup.2 on the outer surface of the CRT display panel.

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