What is the dynamic contrast of liquid crystal display

Dynamic contrast refers to the contrast values measured by a liquid crystal display under certain circumstances, such as each area of the screen, and the contrast value of the region with the largest contrast as the contrast parameter of the product. The measurement methods of dynamic contrast of different manufacturers may vary, but their nature is same. Dynamic contrast and real contrast is two different concepts, generally the same liquid crystal display dynamic contrast is 3-5 times the actual contrast degree. Therefore, dynamic contrast is just the number of players playing the game, and there is no practical significance.

Brief introduction

In simple terms, the dynamic contrast is the same as the full on/off contrast, which is also the ratio of brightness to the brightness of the full black signal display when the display receives the full white signal. In contrast to the open/full clearance, the display will adjust the brightness of the backlight lamp so that the brightness displayed when receiving the full white signal is higher, and the brightness of the receiving full black signal display is lower, and then to a larger value.

For example, a full white screen brightness of 200cd/m2 display, the brightness of the full black screen if the 0.1cd/m2, its dynamic contrast is 2000:1, if the total black screen brightness reduced to 0.01cd/m2, its dynamic contrast reached 20,000:1; If the manufacturer in the control circuit for the full black screen will be completely closed, when the brightness is 0cd/m2, dynamic contrast will be "infinity"! For example, the newly released MS Series LED LCD Displays the dynamic contrast of the panel to a height of 10 million to 1. And, according to ASUS ' Technical engineers, the 10 million-1 will become the new standard for dynamic contrast of LED LCD monitors.

Through the above analysis, we can find that dynamic contrast is mainly to ensure the brightness of the bright scene, and dim the scene is black enough. Therefore, dynamic contrast for those who need to frequent in the bright scene and dim scene Switching applications have more obvious practical significance. For computer applications, text processing, access to the Internet, office, programming, all the basic no change in the big changes in the situation; Most of the game brightness is in a fixed range, bright and dim screen Switching although not completely, but also very few. Comprehensive consideration, only the film and television is the computer applications need to frequently switch the light and shade scene, so only the film and television is the most dynamic contrast application.