| 摘要 |
A current driving circuit is provided to maintain highly or precisely a bias voltage by discharging a capacitor using a reset signal, which is applied before a write control signal. A current driving circuit includes first and second switches(31,32), a capacitor(34), and a first, second and third transistors. The first switch switches between a first node, which outputted a display current, and a second node based on a first control signal. Drain and gate terminals of the first transistor(33) are connected to the second node, and a source terminal thereof is connected to a common voltage. The second switch switches between the second node and a third node based on a second control signal. The capacitor, which is connected between the third node and the common voltage, maintains a voltage level of the third node. The second transistor(36), which is connected between the third node and the common voltage, is turned on by a reset signal before the first and second control signals. The third transistor, which is connected between the third node and the common voltage, outputs a driving current from a drain terminal thereof.
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