FIELD: display technologies.
SUBSTANCE: invention relates to the field of display technologies and, in particular, to a backlight control circuit, a backlight control method and a display terminal. The effect is achieved in that the backlight driving circuit includes a driver circuit and a power conversion circuit. The driver circuit includes a feedback output pin and at least one channel port. The channel port is connected to the first output of the light string group. The driver circuit is configured to receive the voltage of each channel port and allow the feedback output pin to provide a current feedback signal based on the voltage Vch. The power conversion circuit is connected to the feedback output terminal and includes a voltage output terminal. The output voltage terminal is configured to provide a supply voltage for the second output of each group of light strings. The power conversion circuit is configured to convert the voltage over the input voltage and increase or decrease the supply voltage based on the current feedback signal.
EFFECT: lower power consumption of backlit displays.
22 cl, 13 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LED BACKLIGHT FOR LCD DISPLAY DEVICE AND LCD DISPLAY APPARATUS | 2014 |
|
RU2673703C2 |
| LED LIGHT CONTROL SCHEME AND LIQUID CRYSTAL DISPLAY DEVICE | 2014 |
|
RU2651145C1 |
| METHOD OF CONTROLLING LIGHTING ARRANGEMENT, LIGHTING CONTROLLER AND LIGHTING SYSTEM | 2014 |
|
RU2673249C2 |
| LED-BACKLIGHT SYSTEM AND DISPLAY DEVICE | 2013 |
|
RU2621883C1 |
| FLYBACK BUILD UP CIRCUIT, DRIVER LED-LIGHT CIRCUIT AND LIQUID-CRYSTAL DEVICE | 2014 |
|
RU2635067C1 |
| VOLTAGE CONVERTER WITH SEPARATE CIRCUITS OF COMBINED CONVERSION | 2013 |
|
RU2617991C2 |
| LED DRIVER AND CONTROL METHOD | 2014 |
|
RU2675793C2 |
| SELF-CONTAINED PORTABLE DEVICE FOR INDUCTIVE CHARGING OF ACCUMULATOR BATTERY | 2018 |
|
RU2695103C1 |
| DEVICE FOR CONTROLLING THE ACCUMULATING DEVICE | 2012 |
|
RU2628527C2 |
| CONTROLLED DRIVER AND EXCITATION METHOD | 2015 |
|
RU2698301C2 |
