主权项 |
1. A circuit of a display device for driving an organic EL element in which display brightness is controlled by display data having six bits, comprising:
three coupling capacitors connected to a data enable line; three bit transistors, wherein a first terminal of each bit transistor is electrically connected to each of three bit lines and a second terminal of each bit transistor is electrically connected to a corresponding one of the three coupling capacitors; a selection transistor with a first terminal electrically connected to a select line and a second terminal electrically connected to a third terminal of all of the bit transistors; a reset transistor with a first terminal electrically connected to a reset line and a second terminal electrically connected to the third terminal of all of the bit transistors; a driving transistor with a first terminal electrically connected to a third terminal of the selection transistor and a second terminal electrically connected to a power supply line; a retentive capacitor with a first terminal electrically connected to the first terminal of the driving transistor and a second terminal electrically connected to the second terminal of the driving transistor; a light emission control transistor with a first terminal electrically connected to a light emission control line, a second terminal electrically connected to a third terminal of the driving transistor, and a third terminal electrically connected to a first terminal of the organic EL element; wherein, during a first period, three high-order bits of the display data are supplied to the three bit lines while a first voltage is applied to the power supply line, and then, during a second period, three low-order bits of the display data are supplied to the three bit lines while a second voltage, different from the first voltage, is applied to the power supply line. |