A screen is a surface or device used either to present visual information or to act as a physical barrier or filter. In contemporary usage the word commonly means an electronic display — the glass or panel on which images and text appear — but it also describes non-electronic partitions such as insect meshes, folding room dividers, or projection canvases.

Common types

  • Electronic displays: monitors, television panels and mobile-device screens using technologies such as CRT, LCD, LED backlighting, OLED and microLED.
  • Touchscreens: displays that accept direct finger or stylus input using resistive, capacitive or other sensing methods.
  • Projection screens: surfaces designed to reflect or diffuse projected light for cinema, classrooms and events.
  • Mesh and window screens: woven or perforated materials that block insects, debris or direct sunlight while allowing air flow.
  • Privacy and filter screens: overlays or films that narrow viewing angles, reduce glare or filter blue light.

Display screens are described by measurable characteristics: resolution and pixel density determine image detail; aspect ratio and diagonal size describe shape and scale; refresh rate and response time affect motion clarity; brightness, contrast ratio and color gamut influence image quality; and viewing angle, power consumption and durability are important for specific applications.

History and development

Early forms of screens include painted backdrops and projection surfaces. In the 20th century, cathode-ray tubes dominated electronic imaging until flat-panel technologies—liquid crystal displays and later organic LEDs—replaced them. Touch-sensitive layers became widespread in the 2000s, enabling smartphones and tablets. Current developments emphasize flexible, foldable panels, higher dynamic range (HDR) and energy-efficient materials.

Screens serve many roles: personal and professional computing, television, public information displays, cinema projection, interactive kiosks and control-room monitoring. Non-electronic screens protect indoor spaces from insects, provide privacy, or divide rooms in architecture and gardening. In specialized fields, medical imaging displays and industrial operator panels are calibrated for precise color and reliability.

Distinctions and notable points

"Screen," "monitor" and "display" overlap but differ by context: a monitor typically refers to a computer output device, while a screen may be any surface showing images. Public discussion around screens includes concerns about "screen time," blue-light exposure and electronic waste. Advances continue toward higher efficiency, durability and new form factors, such as rollable or transparent displays.