The invention discloses an alternating-current pixel
driving circuit and method for an active organic light-emitting
diode (
OLED) display. The
driving circuit comprises a driving
transistor, a switch
transistor, a storage
capacitor and an
OLED, wherein the drain of the first
transistor is connected with a data wire; the grid of the first transistor is connected with a first scanning control wire; the source of the first transistor is connected with the end A of the storage
capacitor; the drain of a second transistor is connected with the source of a third transistor; the grid of the second transistor is connected with the end A of the storage
capacitor and the source of the first transistor; the source of the second transistor is connected with the drain of a four transistor and the end B of the storage capacitor, and is connected with the ground through the
OLED; the drain of the third transistor is connected with a power wire; the grid of the third transistor is connected with a light-emitting control wire; the grid of the fourth transistor is connected with a second scanning control wire; and the source of the fourth transistor is connected with a reference potential. According to the
driving circuit and method, the OLED works in an alternating-current
driving mode, so that the characteristics of the OLED are recovered from degeneration state, the service life of the OLED is prolonged effectively, the
threshold voltage drift of a
thin film transistor and the degeneration of OLED
cut-in
voltage can be compensated effectively, and the uniformity of a display picture is enhanced.