Turn off your iPad. Turn it over and do three semi-hard knocks on the back. Then turn your iPad back on.
If the above method not working,
Knock the upper left corner on your knee. It might help your iPad to turn to normal screen or hit the corner lightly.
This is a crazy solution. But it has worked for lot of people.
You can also take backup of all your important data and then try to reset it. Let me know if you go with that option after trying above methods for couple of times.
If you are comfortable in opening your ipad then you can open it and then disconnect and re-connect the LCD cable
Thank you :) Let me know if you have any questions. Good day !!
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