Patent ID: 9613566
Date: 2017-04-04
CPC Classifications: G09G

Claim:
1. An active matrix organic light emitting diode (AMOLED) driving device, comprising: a control module, a voltage module, and a display panel, wherein the control module comprises a timing control unit, a data output unit, a black screen output unit and a data output selection unit, and the voltage module comprises a Gamma constant voltage unit and an organic light emitting diode (OLED) driving voltage unit; wherein the display panel comprises a plurality of pixel structures that are arranged in the form of an array, and each of the pixel structures comprises a first transistor, a second transistor, a storage capacitor, and an organic light emitting diode; wherein the timing control unit generates a frame control signal that controls the data output selection unit so that when the frame control signal is a high level, the data output selection unit outputs a normal image signal to the display panel; and when the frame control signal is a low level, the data output selection unit outputs a black screen to the display panel; and when a normal image signal is output in one frame, a black screen is output in the next frame; wherein the frame control signal generated by the timing control unit also is configured to control the OLED driving voltage unit so that the OLED driving voltage unit supplies a power supply positive potential and a power supply negative potential to the organic light emitting diode; when the frame control signal is a high level, a normal image signal is output, and the power supply negative potential is connected to a preset negative potential output from the OLED driving voltage unit; and when the frame control signal is a low level, a black screen is output, the power supply negative potential is connected to a preset positive potential output from the OLED driving voltage unit; and the preset positive potential is higher than the power supply positive potential; and wherein the timing control unit receives a clock signal and an effective display data strobe signal from a low voltage differential signal, and the data output unit receives a normal image signal from the low voltage differential signal.