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cold cathode |
Also found in: Wikipedia | 0.06 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. 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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LEDs are able to replace traditional cold-cathode fluorescent lamps (CCFLs) in the backlighting units of LCD televisions, offering advantages in terms of lifetime, environmental friendliness and most significantly enhanced 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. |
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