| 摘要 |
PURPOSE: A method for improving a surface area of a cathode for cathode ray tube and a cathode for cathode ray tube thereof are provided to improve thermion emission characteristics by increasing a surface area of a cathode. CONSTITUTION: An anode(21) is faced to a cathode oxide(110) within a vacuum chamber(22). Positive ions(24) of an inactive gas are collided to a surface of the cathode oxide(110) by forming plasma. An argon and a nitrogen are used as the inactive gas. A matching circuit is formed to form the plasma. The matching circuit is formed between the cathode(110) and an RF alternating current source(26). The matching circuit is formed with two condensers(27,28) and one inductor(29).
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