What's with the weird grid on the monitor?

Question

Monitors

Hello. I recently had to change my monitor. The resolution, as it was 1680x1050, remains the same. But right away, I began to notice strange diagonal grids often, peering into the monitor. I have never seen anything like this before.

Please note that the grid is exactly diagonal, the picture with an approximate explanation:


Of course, in fact, the "rays" are much denser.

Answer 1

Like here???