| 摘要 |
A cathode structure for supporting a cathode sleeve of a cathode ray tube includes a plurality of metal ribbons for supporting the cathode sleeve, where one end of a ribbon is fixed to an upper end of the cathode sleeve and the other end of the same ribbon is fixed to an upper end of a cathode holder, that allows thermal expansion of the cathode sleeve to occur towards the cathode holder, and maintain a constant distance between a cathode cup on the cathode sleeve and a first electrode of an electron gun.
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