Term (Acronym) [units]: Definition
Field Emission Display (FED): Field emission displays are similar to CRTs in that a beam of electrons excites phosphors which then emit visible light. However, FEDs are only a few millimeters thick. Instead of a single electron gun, a FED display uses a large array of carbon nanotubes (CNTs) or fine metal tips (Spindt tips, named after the inventor) as electron emitters. FEDs require no backlight and have wide viewing angles, short response times and very high contrast.
Field Sequential Display: An LCD display architecture in which RGB field images are sequentially displayed so that the viewer sees a full-color frame. This architecture eliminates the color filters and doesn’t require subpixels, which improves the performance and resolution of the display.
Fill Factor: See Aperture Ratio.
Film Compensated STN (FSTN): An STN LCD with the addition of a retardation film that compensates for the color added by the birefringence effect. This allows the production of a black-and-white display and provides for a higher contrast and wider viewing angle.
Flat Panel Display (FPD): Any electronic display that is very thin, regardless of technology.
Flexible OLED (FOLED): An OLED built on a flexible substrate such as plastic film or metal foil.
Fluorescent Lamp: A glass tube filled with mercury gas and coated on its inner surface with phosphors. When the gas is charged with an electrical current, radiation is produced which causes the phosphors to glow.
Foot Lambert [fL]: A unit of luminance in US measurements. One foot-Lambert is equal to 1/Pi candelas per square foot, or 3.426 candelas per square meter.
Footprint: The surface area that an object covers, such as the tabletop space occupied by a notebook computer. In color modeling, "footprint" is another term for gamut.
Frame: The entire set of image data (for animation or videos) in a packet.
Frame Rate: The rate at which a frame of data is transmitted and displayed; measured in frames per second.
Frontlight: The light source for some types of reflective LCDs. Frontlights are typically used on LCDs smaller than 7" diagonal because of the difficulty of evenly distributing the light. The source of light is usually either LEDs or a CCFL. Although the light source is in fact in front of the screen, it is always located along the edge of the screen in order not to block the image. A frontlight is therefore sometimes called a sidelight or edgelight.
Frontplane: The portion of a display that contains the pixels. In an LCD, the frontplane includes the color filters which form the pixels. In an OLED, the frontplane includes the organic layers that emit light.