| 摘要 |
The coating on the outer surface the display screen of a cathode ray tube (CRT) includes an inner conductive antistatic layer and an outer antireflective layer. When applied by a wet coating method, e.g., spray or spin coating, the two layers diffuse into one another to form a composite layer. When applied by a dry coating method, e.g., sputtering, the two layers remain separate. In the former case, a layer of conductive carbon black is applied between the composite layer and the CRT's tension (or implosion protection) band, while in the later case the conductive carbon black layer is applied between the tension band and a conductive element applied to the inner antistatic layer. The carbon black layer provides a conductive path to ground for the display screen's outer coating to prevent electrostatic charge buildup on the display screen.
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