cold cathode

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cold cathode

[′kōld ′kath‚ōd]
(electronics)
A cathode whose operation does not depend on its temperature being above the ambient temperature.

cold cathode

A cathode in a gas-filled electron tube that is not heated by a filament in order to excite the electrons and cause current flow. The voltage potential within the tube is sufficient to ionize the gas in the tube and cause current flow. For example, the backlights in many flat panel LCD screens are cold cathode fluorescent tubes (see CCFL). See cathode.
References in periodicals archive ?
Product/Service/Works Keywords: Supply of cold-cathode fluorescent lamps (ccfls) for lcds of controllers
Currently, most flat-panel LCD television displays are backlighted using cold-cathode fluorescent lamps (CCFLs).
Nasdaq: MLIN) today announced two new chips that generate the high voltage (up to 2,000V) which powers the cold-cathode fluorescent lamps (CCFL) that backlight liquid crystal displays (LCDs).
These LEDs provide a better color brilliance than conventional cold-cathode fluorescent lamps and deliver much greater picture vibrancy.
These LEDs have advantages over conventional cold-cathode fluorescent lamps and electroluminscent lamps for illumination in compact devices.