Matsushita Electric Industrial Co., Ltd.

Toshiaki Katano

Osamu Adachi

Yasunori Miura

Itsuro Komori

The present invention relates to a color cathode ray tube that reduces a leakage electric field and a maximum instantaneous current generated in a bulb at the time of electric discharge and provides a stable connection of conductive layers with different specific resistance. A first conductive layer is formed on the entire area of an inner wall of a funnel including a contact portion of a first spring supported by a shadow mask structure, an anode button and a contact portion of a second spring supported by a final electrode of an electron gun. A second conductive layer with a specific resistance lower than that of the first conductive layer is formed on the surface of the first conductive layer within the range extending from the anode button to the contact portion of the first spring. The contact portion of the first spring contacts the second conductive layer, thereby electrically connecting the shadow mask structure to the second conductive layer, and the contact portion of the second spring contacts the first conductive layer, thereby electrically connecting the final electrode to the first conductive layer.

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Osaka, Japan

Toshiaki Katano