cold cathode

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cold cathode

n
(Electronics) electronics a cathode from which electrons are emitted at ambient temperature, due to a high potential gradient at the surface
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cold cathode - a cathode that is a source of electrons without being heated
cathode - a negatively charged electrode that is the source of electrons entering an electrical device
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References in periodicals archive ?
[1]) developed a one-dimensional computation method with parameters adjusted from CCFL data in hot leg and pressurizer surge line models (Mayinger et al.
Before LEDs, CCFLs (Cold Cathode Fluorescent Lamps) were used and are actually still primarily used.
LEDinside noted that global sales of LCD TVs with conventional CCFLs (cold cathode fluorescent lamps) as the backlight source will slow down in the coming years because development of such products has hit its ceiling , leaving little room for suppliers to cut prices to trigger consumer demand.
LED backlights offer numerous advantages over CCFL BLUs including very low power consumption, increased dimming ratios, significantly reduced electromagnetic interference (EMI), and they don't require warm-up time at cold temperatures.
As they have a longer lifespan than CCFLs (the main material in LCD monitors), LEDs make for longer-lasting monitors and thus less e-waste.
In 2009, a total of 178,000 units will be shipped [3.5 million CCFL based] and in 2010, 516,000 LED backlit and 4 million CCFL out of a total projected LCD TV shipment of 4.6 million," said Riddhi Patel, principal analyst, television systems, iSuppli Corp.
The energy-efficient, mercury-free LED panels of the V Series Eco consume approximately 36% less power than traditional CCFL displays.
NEC Displays has also reduced the conventional four CCFL backlights to just two lights on the new MultiSyncA EA221WMe, thus making the display more energy-efficient.
These cutting-edge TVs use LEDs as their primary light source, rather than traditional Cold Cathode Fluorescent Lamps (CCFL).
The modules consume less power, are substantially thinner and lighter than comparable LCD modules incorporating cold-cathode fluorescent lamp (CCFL) backlights.
Products on display at Diguang International at the CEF Shanghai Show, Shanghai New International Expo Center included CCFL and LED backlights, LED general lighting products and the company's new line of mini-notebooks or "mini-books."
The cold cathode florescent lamps (CCFL) eventually start to burn out and there are no replacements available anywhere in the marketplace.