CATHODE RAY TUBE AND CATHODE RAY TUBE APPARATUS

摘要

A TRANSPARENT CONDUCTIVE FILM (21) IS FORMED ON AN OUTER SURFACE OF A FACE PORTION (11) OF A FACE PANEL (13) AND A PHOSPHOR SCREEN IS FORMED ON AN INNER SURFACE THEREOF. A CONDUCTIVE EXPLOSION PROOF BAND (22) IS WOUND AROUND AN OUTER PERIPHERY OF A SKIRT PORTION (16) OF THE FACE PANEL AND THE EXPLOSION PROOF BAND HAS A GROUNDING POTENTIAL. A CONDUCTIVE TAPE (24) IS ATTACHED ALONG A LONG SIDE OF THE FACE PANEL AND ELECTRICALLY CONNECTS THE TRANSPARENT CONDUCTIVE FILM WITH THE EXPLOSION PROOF BAND. A COMPENSATING ELECTRODE (26) EXTENDING ALONG A SIDE OF THE FACE PANEL IS ATTACHED TO AN UPPER SIDE OF THE SKIRT PORTION AND DISPOSED ON A SIDE OPPOSITE TO THE CONDUCTIVE TAPE WITH RESPECT TO THE EXPLOSION PROOF BAND. AN INVERSE VOLTAGE APPLYING PORTION (30B) APPLIES A VOLTAGE HAVING A WAVEFORM OF A POLARITY INVERSE TO THAT OF THE DEFLECTION VOLTAGE APPLIED TO A DEFLECTION DEVICE (27) TO THE COMPENSATING ELECTRODE SO AS TO GENERATE AN ELECTRIC FIELD FOR CANCELING AN ALTERNATING @ELECTRIC FIELD GENERATED FROM THE DEFLECTION DEVICE. (FIG. 1)