Patent ID: 6631192
Filing Date: 2003-10-07
Classification: H04M,H04W,Y02D

Abstract:
A cellular phone comprising:(a) a display; (b) a power switch for switching power to said cellular phone; (c) a key pad arrangement; (d) a lighting device which lights both of said display and said key pad arrangement together; (e) a touch sensor which is turned on upon making contact with a user and transmits a first signal, and turned off upon making no contact with a user, and transmits a second signal; (f) a display driver which drives said display; and (g) a controller which turns said lighting device and said display driver on upon receiving said second signal from said touch sensor, and turns said lighting device and said display driver off upon receiving said first signal from said touch sensor, wherein said lighting device comprises a first lighting device for said display and a second lighting device for said key pad arrangement and wherein said key pad arrangement comprises another switch that activates said touch sensor.