ELECTRON GUN FOR CATHODE-RAY TUBE, AND ASSEMBLING METHOD THEREOF
PROBLEM TO BE SOLVED: To provide an electron gun for a cathode ray tube with a shortened cathode heater part to shorten the entire length of the gun, superior in electric power-saving and quick activity, and suitable for mass-production. SOLUTION: In this electron gun for a cathode-ray tube, a catho...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an electron gun for a cathode ray tube with a shortened cathode heater part to shorten the entire length of the gun, superior in electric power-saving and quick activity, and suitable for mass-production. SOLUTION: In this electron gun for a cathode-ray tube, a cathode base metal 37 is jointed to an antisotropic pyrolytic graphite film formed into one face of a rectangular insulation substrate 33 comprising an anisotropic pyrolytic boron nitride, and a prescribed pattern of a heater, comprising the anisotropic pyrolytic graphite film is formed in the other face of the insulation substrate 33. Slit holes 48, through which a ribbon 49 for connecting the heater to a supporting pin 46 is wound in, are formed in both end parts of the insulation substrate 33. |
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