Display scramble on my T730

Hi there , my moto T730 display has gone south, as soon as I open it up it
looks all scramble, but if I slowly open it about 1/4 , it looks o.k and I
can browse to all the menus with no problems, but if I open it a little more
it scramble the picture, the outside display is o.k, anyone has had this
happened, I suspect an overcharged battery did some damage. I'v owned this
phone for about a year now, I can receive calls with no problems, is just
that the fancy display not there no more.

Thanks
Steev