Current TFT monitors are mostly set permanently to a resolution of 1280 x 1024 pixels.
If you want to have WinCC Runtime pictures at full screen size and with full resolution, you must select the following in WinCC: "Computer properties > Graphics Runtime > Window Attributes", and the options "Full Screen" and "Adapt Picture".
When changing from an analog monitor to a TFT display (Thin Film Transistor) or vice versa, the new display is addressed only after
rebooting the PC. If you change during running operation, the new monitor appears dark.
LCD monitor, LCD display, LCD screen, Flat screen, Resolution