Brightness And Contrast Of LCD Screen

The main panel function of a LCD monitor is to have a backlight source, which determines the brightness of the entire LCD screen and the saturation of colors. In theory, the higher the brightness of a liquid crystal panel, the better. The unit of measurement for brightness is cd/m2 (candles per square meter), also known as NIT lumens. The brightness of most TFT screens starts from 150Nits, and usually 200Nits is required to panel good images. Contrast refers to the measurement of the contrast between black and white colors at different levels. When the contrast ratio is 120:1, vivid and rich colors can be paneled (because the human eye can distinguish a contrast ratio of about 100:1), and when the contrast ratio reaches 300:1, it can support colors of various levels. Most LCD panels have a contrast ratio of around 500:1 to 800:1. However, the contrast ratio of LCD panel products from top brands such as Asus, Samsung, LG, etc. generally reaches around 1000:1, and there is no fair standard value to measure the contrast between brightness and contrast. Therefore, purchasing an LCD relies entirely on a pair of sharp eyes. So when choosing an LCD, it is important to pay attention to this indicator, which is also the biggest performance difference on LCD products. It is estimated that there may be some difficulty in purchasing.