Definitions for "Backlit Display"
Handset lights up when any handset button is pressed
The light built into the display screen that illuminates the screen for better viewing in low-light environments. There are two types of backlighting: indiglo, which provides soft blue-colored, glow-in-the-dark like lighting, and standard, which provides ordinary white-colored lighting.
Backlit displays on time clocks allow you to still see display in the dark.