kenttäemissionäyttöihin

Kenttäemissionäyttöihin is a Finnish term that translates to "field emission display" in English. A field emission display (FED) is a type of display technology that uses a vacuum fluorescent display (VFD) principle but with a cold cathode for electron emission. In a FED, each pixel consists of a tiny electron emitter, typically a sharp metallic or carbon-based tip. When a sufficient voltage is applied, electrons are "field emitted" from these tips due to the strong electric field. These emitted electrons then strike a phosphorescent screen, causing it to glow and create an image, similar to how CRT televisions work.

The primary advantage of FEDs is their potential for high brightness and contrast, as well as fast response times. They also offer a wide viewing angle and low power consumption compared to some other display technologies. However, FEDs have faced significant manufacturing challenges, particularly in creating uniform and reliable electron emitters across a large display. The cost of production has also been a barrier to widespread adoption. While research and development in FED technology have continued for decades, it has not yet achieved the commercial success of technologies like LCD or OLED.