Screen

A screen is a flat, typically rectangular surface that displays visual content produced by an electronic source. Screens are found on devices such as computers, televisions, smartphones, tablets, and digital signage, and they serve as the primary interface between users and digital information.

Different screen technologies have evolved over time. Cathode ray tube (CRT) displays dominated earlier televisions and monitors, but they have largely been replaced by flat-panel technologies such as liquid crystal displays (LCDs) with backlights, light-emitting diode (LED) backlit LCDs, and organic light-emitting diode (OLED) panels. Some devices use electronic ink (e-ink) for low-power, high-contrast reading.

Common display attributes include size, aspect ratio, resolution, brightness, contrast, and viewing angle. Touch-sensitive screens integrate input capabilities using capacitive or resistive sensors, allowing direct interaction through tapping, swiping, or pressure. Additional features may include anti-glare coatings, color accuracy, haptic feedback, and high dynamic range.

The term 'screen' also covers privacy screens, screens used in public or industrial displays, and specialized screens for augmented or virtual reality. In computing, display technologies influence usability, content legibility, and energy consumption.

For health and comfort, users are advised to manage brightness, reduce glare, and follow ergonomic guidelines such as the 20-20-20 rule to reduce eye strain during long screen sessions.