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cold cathode |
Also found in: Wikipedia | 0.03 sec. |
cold cathodeA 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 CCFT). See cathode. cold cathode [′kōld ′kath‚ōd] (electronics) A cathode whose operation does not depend on its temperature being above the ambient temperature. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Demand for LEDs for backlighting will grow rapidly as they replace cold-cathode tubes. To serve the discriminating image-quality needs of the commercial market better, the PN-655RU has a four-wavelength spectrum, cold-cathode fluorescent backlight that provides an enhanced color spectrum including deeper, more vibrant and vivid reds. nbsp;of approximately 220 cd/m, outperforming the higher-wattage displays equipped with cold-cathode fluorescence lamps. |
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