A digital screen (or digital display) is an output device for the presentation visual of information. RGB digital screens are used in TVs, computers, phones and projectors.
Digital screens use the RGB (red, green, blue) colour model to represent and display information.
The range of colours that different types of screens can display depends on their technology and specifications.
Many RGB digital screens include light-emitting diodes (LEDs) that can directly or indirectly adjust the intensity of red, green and blue light within each addressable component of the screen to produce pixels of colour that together produce an image.
LEDs are typically used to backlight LCD (liquid crystal display )screens. Different colours are created by colour filters and by adjusting the amount and the polarization of light that is allowed to pass through the crystal sub-pixels that make up each pixel on the screen.
In an OLED display, each pixel provides its own illumination. The organic materials in the OLED emit light when an electric current is applied. Because each pixel can be turned on or off individually, OLED displays can achieve deeper blacks (by completely turning off pixels) and a higher contrast ratio compared to LED-backlit LCD screens.