Contrast Ratio 2 : The ratio of the luminance of the brightest white to the darkest black that the display is capable of. A higher contrast ratio means a sharper picture. A ratio of 500: 1 is the bare minimum - the higher the better
WhatIs.com (A knowledge exploration and self-education tool about information technology IT), Margaret Rouse (Editorial Director), Electronics Glossary, TechTarget, Inc., USA 2015. http://whatis.techtarget.com/glossary/Electronics/ page/2, (Electr - Amer) {992}