iPad has backlight but no video on screen

It is a 1st gen iPad, and the screen still appears to work. When I power it on, the Apple logo appears, and the screen is backlit, but after it gets done booting there is no image on the screen. Sound still works fine, and touch response swill works as well. I've tried holding down the power button and home button to do a reset to no avail. Anyone have any suggestions?