Apparatus for controlling LCD backlight in mobile station
First Claim
1. An apparatus for controlling a backlight of an LCD in a mobile station comprising:
- a backlight LED (Light Emit Diode) for generating a backlight to the LCD;
a backlight drive which receives an input current and supplies an output current to the backlight LED to drive the backlight LED;
a current control unit for controlling the input current of the backlight drive by a current control signal; and
a control unit for supplying the current control signal to the current control unit to control the operation of the LCD according to the normal mode or dimming mode.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided an apparatus for controlling an LCD backlight in a mobile station to perform the operation of the mobile station in a dimming mode more effectively, and extend the maximum allowable operation time of the mobile station, the apparatus including a backlight LED (light emit diode) for generating a backlight to an LCD, a backlight drive for receiving an input current to supply the input current to the backlight LED to drive, a current control unit for controlling the input current of the backlight drive by a current control signal, and a control unit for supplying the current control signal to the current control unit to control the input current of the backlight drive during operation of the LCD according to a normal mode/dimming mode as predetermined.
-
Citations
6 Claims
-
1. An apparatus for controlling a backlight of an LCD in a mobile station comprising:
-
a backlight LED (Light Emit Diode) for generating a backlight to the LCD;
a backlight drive which receives an input current and supplies an output current to the backlight LED to drive the backlight LED;
a current control unit for controlling the input current of the backlight drive by a current control signal; and
a control unit for supplying the current control signal to the current control unit to control the operation of the LCD according to the normal mode or dimming mode. - View Dependent Claims (2, 3, 4)
-
-
5. An apparatus for controlling a backlight in a mobile station including a backlight drive which receives an input current, and supplies an output current to a backlight LED to drive the backlight LED, comprising:
-
a current control unit including a switch which is switched on and off according to a current control signal, and resistors for forming an input current value of the backlight drive by varying the resistance depending on the on and off state of the switch; and
a control unit for supplying the current control signal to the current control unit to control the input current of the backlight drive during the operation of the LCD according to a normal mode or dimming mode. - View Dependent Claims (6)
-
Specification