A 4K display refers to a screen resolution of approximately 3840 x 2160 pixels, which is four times the resolution of 1080p (1920 x 1080 pixels). This higher pixel count allows for sharper images and more detailed visuals, making it ideal for large screens and close viewing distances. 4K displays are commonly used in televisions, monitors, and projectors, enhancing the viewing experience for movies, video games, and professional applications. Many streaming services and gaming consoles now support 4K content, providing users with access to high-quality media that takes full advantage of this advanced resolution.