The primary colors for lights are red, green, and blue-violet. Mixed together, they can produce all the other colors. Artists of the Impressionist period created paintings using only dots of color. Newspaper photos are made of dots, also. The Big Picture about how the eye sees TV screens LCD screens Screen Features Size Desktop screens are usually 14 - 19 in. by diagonal measurement.
Larger sizes are available, at a significantly higher cost.
Prices are dropping, however. Resolution Determines how clear and detailed the image is. Pictures on a screen are made up of tiny dots. The more pixels per inch, the clearer and more detailed the picture. One measure of this is the dot pitch , the distance between the dots that make up the picture on the screen.