| 摘要 |
An analog buffer, a method for driving the same, and a display device using the same are provided to display preciously image data by minimizing the difference of levels of data voltage and precharge voltage. An analog buffer includes at least one operational amplifiers(31,32) and at least one chargers(21,22). The operational amplifiers compare the voltages of first and second input terminals, and generate an output voltage converged on the input voltage of the first input terminal to an output line. The chargers generate a precharge voltage using the output voltage and supply the generated precharge voltage to the output line. Each of the chargers includes first, second, third, and fourth switching elements(SW1,SW2,SW3,SW4), and first and second resistors(nR,R). The first switching element controls first and second constant voltages. The first and second resistors generate precharge voltages. The second element forms the same voltages in the first and second resistors and the output line. The third element supplies the precharge voltage to the output line. The fourth element supplies the output voltage to the output line.
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