LUMINOUS APPARATUS OF KEYPAD ASSEMBLY FOR MOBILE COMMUNICATION TERMINAL AND KEPAD ASSEMBLY HAVING THE LUMINOUS APPARATUS

摘要

A light-emitting device and a keypad assembly for a mobile communication terminal including the same are provided to reduce the thickness of the keypad assembly by printing a reflection pattern in the shape of a character or number on the rear side of a light guide panel. A light source(42) makes the light incident to a transmissive light guide sheet(41). A plurality of reflection patterns(43) are mounted on a lower part of the light guide sheet to reflect the light, passing through the light guide sheet, to a key button prepared at an upper side of the light guide sheet. So that a user can distinguish a plurality of key buttons, a plurality of reflection patterns are printed in the shape of a character on the rear side of the light guide sheet.