My MicroSoft 950 Screen Stay Black But touch screen working!

Hi there,

I have a Microsoft Lumia 950, the problem is it has black screen issue, but touch screen works. The phone works before, but suddenly my phone's display shows nothing but I can feel that touch screen works, phone rings, etc. Recently I've already Reset my 950 with Windows Device Recovery Tool, but still no luck. I can't figure out the problem.. Is my 950's display gone? or it may have other problem.. ... .... ..... ......

please help me.

Thanks