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发明公开
CN104680984A 背光单元和使用该背光单元的液晶显示器 有权

背光单元和使用该背光单元的液晶显示器
摘要：
公开了背光单元和使用该背光单元的液晶显示器，该液晶显示器LCD装置具有带有多个像素的LCD面板。该LCD装置包括：选通驱动电路和数据驱动电路，以分别向像素提供选通脉冲和数据电压；和时序控制器，该时序控制器控制选通驱动电路和数据驱动电路。该LCD装置还包括背光单元，以向液晶面板提供光。该背光单元包括：光源，该光源具有至少一个LED通道；驱动电压生成器，该驱动电压生成器向LED通道提供驱动电压；和LED驱动器，该LED驱动器向LED通道提供条件脉冲宽度和幅度调制(CPWAM)信号。CPWAM信号具有如下脉冲，该脉冲的幅度和宽度这两者在从预定长度的一个周期到预定长度的另一个周期为可变的。
摘要（英）：

A liquid crystal display (LCD) device having an LCD panel with a plurality of pixels is disclosed. The LCD device includes gate and data driving circuits to provide a gate pulse and a data voltage to the pixels, respectively, and a timing controller to control the gate and data driving circuits. The LCD device also includes a backlight unit to provide light to the liquid crystal display panel. The backlight unit includes a light source having at least one LED channel (CH1- CHn), a driving voltage generator to supply a driving voltage to the LED channel, and an LED driver to supply a conditional pulse width and amplitude modulation (CPWAM) signal to the LED channel. The CPWAM signal has a pulse with an amplitude and a width that are both variable from one period of a predetermined length to another period of the predetermined length.

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