The screenshot shows something that like a partial outline of a notification box. The image is rather small, but it also appears to have a shadowing effect as well.
It does not look like a result of a defective LCD panel. More likely a driver issue which is easy and free to determine if it is so by uninstalling then reinstalling the video drivers.
If it is not caused by the driver issue, then I recommend call Lenovo tech support. They will likely ask you for permission to connect to and control your laptop remotely to see if they can resolve the issue remotely. It could be some type of interface issue between the video card and the LCD panel, but I really doubt it is the LCD panel itself.
If the issue cannot be resolved remotely, then you need to request an RMA to send in your laptop to be inspected / repair at Lenovo's tech support facility somewhere in Texas. If you paid for onsite support, then a technician will stop by to inspect your laptop.