Patent ID: 11881174
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 8:
9. An OLED display device which comprises an OLED drive circuit, the OLED circuit further comprising: a sub-drive circuit, a sub-switch circuit, a sub-detection circuit, and a sub-compensation circuit;
wherein an input of the sub-drive circuit is electrically connected to an output of a data line, and the sub-drive circuit is configured to output a driving voltage to an OLED;
the sub-switch circuit is connected between the sub-drive circuit and the OLED, and is configured to connect or disconnect a circuit path between the sub-drive circuit and the OLED;
an input of the sub-detection circuit is electrically connected to an output of the sub-drive circuit, and the sub-detection circuit is configured to detect a driving voltage of the sub-drive circuit when the circuit path between the sub-drive circuit and the OLED is disconnected by the sub-switch circuit; and
an input of the sub-compensation circuit is electrically connected to an output of the sub-detection circuit, an output of the sub-compensation circuit is electrically connected to an input of the data line, and the sub-compensation circuit is configured to adjust a data voltage output by the data line according to the driving voltage detected by the sub-detection circuit;
wherein the sub-detection circuit comprises: a second switching transistor, a second scanning line, a third switching transistor, a third scanning line, a voltage sensor and a resistor, wherein a gate electrode of the second switching transistor is electrically connected to the second scanning line, a source electrode of the second switching transistor is electrically connected to the output of the sub-drive circuit, a drain electrode of the second switching transistor is electrically connected to one end of the resistor, and the other end of the resistor is grounded; a gate electrode of the third switching transistor is electrically connected to the third scanning line, a source electrode of the third switching transistor is electrically connected to the output of the sub-drive circuit, and a drain electrode of the third switching transistor is electrically connected to an input of the voltage sensor.