The phrase "cold cathode" refers to a type of cathode (a negatively charged electrode) that operates without heating up. It remains cool while emitting electrons when a voltage is applied. Full definition
Previous generations of LCD screens used cold cathode fluorescent lights (CCFLs)-- miniature versions of the cheap lighting you see in offices and retail stores. (howtogeek.com)
Benefits of LEDs over CCFL The vast majority of LCD screens so far have used cold cathode fluorescent lights (CCFL) to backlight the screen. (treehugger.com)
Enhancing the electron emission of multiwall carbon nanotubes (MWCNT) is key for applications ranging from cold cathodes used in high - resolution electron microscopes to portable X-ray imaging systems. (sciencedaily.com)