At present, the liquid crystal display interface mainly has two types: D-Sub (also called VGA) and DVI. The D-Sub interface mainly appears on the low-end products, and needs to undergo two-to-analog conversion and analog-to-digital conversion to convert signals twice, while the DVI interface is an all-digital lossless transmission signal, which mainly appears in high-end products.
Because the DVI interface is completely digital, the resulting image will never appear virtual. Because the D-Sub interface is a simulation method, it has such unstable factors, so it will inevitably bring some trouble to our use.
When the LCD uses the D-Sub interface for a long time, the effect will be blurred. It is necessary to re-calibrate the commonly used Auto button to restore the normal effect (but the actual use has little effect, I am using it). However, the liquid crystal display of the DVI interface will never appear in a similar situation, and the display effect is still excellent after a long time of use. In the case of comparable prices, we should consider the LCD with DVI interface.
