Disclosed are devices and methods that relate to an LCD device responding to an AT command that solely activates the backlight of the LCD device. An LCD device is programmed to respond to two distinct backlight AT commands. One AT command turns the backlight on, and another AT command turns the backlight off. These backlight AT commands are programmed into LCD device testing equipment so that accurate photographs are taken of the LCD device, and results are improved. The backlight AT commands are also used as part of the programming for user-end applications.