Install driver for Waveshare 3.5" 320*480 LCD Display on Raspberry Pi 2/Raspbian Jessie
У вашего броузера проблема в совместимости с HTML5
Install driver for Waveshare 3.5" 320*480 Raspberry Pi LCD Display Module on Raspberry Pi 2/Raspbian Jessie
http://helloraspberrypi.blogspot.com/2016/07/waveshare-35-320480-raspberry-pi-lcd.html