| 摘要 |
A circuit for generating gamma reference voltages is provided to enhance the gamma characteristics of high and low gray scale areas by utilizing a divided voltage resistor group where gamma reference voltages are easily varied using switching elements. A circuit for generating gamma reference voltages includes a first divided resistor group(50) for dividing a driving voltage using a resistor, which is selected by a switching element, and a second divided resistor group for dividing the driving voltage. The first divided resistor group includes first, second, third, and fourth resistors(R1,R2,R3,R4). The first resistor receives the driving voltage through a first switching element(SW1). The second resistor receives the driving voltage through a second switching element(SW2) and forms an output node by connecting to the first resistor. The third resistor is connected to the output node and the ground by a third switching element(SW3). The fourth resistor is connected to the output node and the ground by a fourth switching element(SW4).
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