| 摘要 |
A driving unit of a liquid crystal display(LCD) device is provided to finely adjust a common voltage by selecting the common voltage within a narrower voltage range, which is set by calculating one voltage. A liquid crystal display device includes plural pixels, which are arranged in a matrix form, and pixel and common electrodes for driving liquid crystal corresponding to the pixels. A driving unit for the LCD device includes a reference resistor, a first voltage setting unit(210), a second voltage setting unit(220), and a voltage selector(230). The reference resistor generates a reference voltage(Vref) from a source voltage, which is applied from the outside. The first voltage setting unit calculates a first voltage from the reference voltage and outputs the first voltage. The second voltage setting unit calculates a second voltage from the reference voltage and outputs the second voltage. The voltage selector selects a third voltage between the first and second voltages according to setting data from the outside and applies the third voltage to the common electrode.
|
