That does not necessarily meant the screen is damaged.
I had my Iwork11 battery drained not too long ago…long story!
I left it plug in for a few days and finally got it to boot to windows.
The battery indicator never worked right. Booting to android was hit and missed.
I follow suggestion from youtube on another tablet….
Open the tablet…dis-connect the battery…re-connect the battery…
That did the trick…charging and booting work fine ever since then.
Becareful opening the case…I broke the plastic portion of the sd card slot.
Was your tablet fully charged?