What does the term "resolution" refer to in the context of video displays?

In the context of video displays, "resolution" fundamentally refers to the clarity and detail of the image presented. It is expressed in terms of the number of pixels that make up the display, typically defined by horizontal and vertical counts (e.g., 1920x1080). A higher resolution indicates a greater number of pixels, which leads to finer detail and sharper images, allowing viewers to see more intricate details and enjoy a more immersive viewing experience. As such, resolution directly impacts the visual quality of content, particularly in high-definition and ultra-high-definition displays.

The other options pertain to different aspects of displays; brightness refers to the intensity of light produced, size and weight relate to the physical dimensions and portability of the display unit, and contrast ratio is about the difference in luminance between the brightest white and the darkest black a display can produce.