LCD monitor - where is the artifact, the shadow-ghost?

Question

LCD displays

In general, the problem is that in contrasting areas, especially white on black-gray, such an artifact is visible. It gets worse every month. What is it, how to fight or just replace the display?

Answer 1

Check the data cable from the monitor to the system unit. Most often it is the problem.
Try to replace

Answer 2

I'll try to replace it soon.

Answer 3

Hm, they disappeared.