Backlight module, lcd and backlight module driving control method
AssigneeWuhan China Star Optoelectronics Technology Co., Ltd.
InventorPengbo XU
Life of this patent
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Abstract
A backlight module, LCD and backlight module driving control method are disclosed. The backlight module includes: a pulse width modulation (PWM) control circuit, a driving circuit, a first white LED set and a second white LED set; the PWM control circuit being connected to the driving circuit, and the driving circuit being connected to the first white LED set and the second white LED set respectively; the PWM control circuit being for controlling the driving circuit to drive the first white LED set and the second white LED set to emit light; in which the first white LED set and the second white LED set having different chroma.
Claims14
A backlight module, comprising:
- a pulse width modulation (PWM) control circuit, a driving circuit, a first white LED set and a second white LED set;
- the PWM control circuit being connected to the driving circuit, and the driving circuit being connected to the first white LED set and the second white LED set respectively;
- the PWM control circuit being for controlling the driving circuit to drive the first white LED set and the second white LED set to emit light;
- wherein, the first white LED set and the second white LED set having different chroma.
A liquid crystal display (LCD), comprising:
- a display panel and a backlight module, the backlight module comprising:
- a pulse width modulation (PWM) control circuit, a driving circuit, a first white LED set and a second white LED set;
- the PWM control circuit being connected to the driving circuit, and the driving circuit being connected to the first white LED set and the second white LED set respectively;
- the PWM control circuit being for controlling the driving circuit to drive the first white LED set and the second white LED set to emit light;
- wherein, the first white LED set and the second white LED set having different chroma.
A backlight module driving control method, comprising:
- a pulse width modulation (PWM) control circuit transmitting a PWM modulation signal to a driving circuit;
- the driving circuit generating a first driving signal and a second driving signal according to the PWM modulation signal, and outputting the first driving signal and the second driving signal to a first white LED set and a second white LED set respectively to drive the first white LED set and the second white LED set to emit light.
Dependencies are inferred from the claim text.