Patent ID: 6983168

Claim:
A mobile phone having a keypad module and an LCM module, comprising: a main printed circuit board, a first connector and a second connector being welded respectively onto a first predetermined location and a second predetermined location on the main printed board, a first reference power supply and a second reference power supply being provided respectively to said first connector and said second connector, said main printed circuit board being divided into a first portion corresponding to said keypad module and a second portion corresponding to said LCM module; a holder, said holder comprising a space accommodating said LCM module, said holder comprising a slit at a predetermined location of said holder; a secondary printed circuit board for carrying a plurality of LEDs to provide a back light source, said secondary printed circuit board being disposed within said slit, said secondary printed circuit board comprising a first contact point and a second contact point, wherein said first contact point removably contacts with said first connector and said second contact point removably contacts with said second connector; and an electro-luminescent sheet providing another back light source.