Patent ID: 11899055
Assignee: SHANGHAI AVIC OPTOELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 15:
16. A method for driving a display panel, wherein the display panel comprises a circuit board and a plurality of light-emitting elements,
wherein the circuit board comprises a plurality of rows of pixel circuits for progressive scanning and a plurality of detection terminals, one pixel circuit of the plurality of rows of the pixel circuits comprises a drive unit and a detection unit; the drive unit comprises a signal output terminal for outputting a drive signal; and the detection unit comprises an input terminal electrically connected to the signal output terminal, and an output terminal electrically connected to one of the plurality of detection terminals; the detection units in one row of the pixel circuits are electrically connected to different detection terminals, and the detection terminal is electrically connected to an external electrical performance detection circuit,
wherein the light-emitting elements are electrically connected to the signal output terminals, and
wherein the method comprises:
performing the progressive scanning on the plurality of rows of the pixel circuits, and the detection unit keeps disconnecting the signal output terminal from the detection terminal through during the progressive scanning,
wherein the drive unit comprises a first reset module, a data writing module, a light-emission control module, a storage capacitor and a drive transistor, and a scanning of one pixel circuit of the plurality of rows of the pixel circuits comprises a reset stage, a data writing stage and a light-emission control stage, wherein
in the reset stage, the first reset module connects a control terminal of the drive transistor to a first reset voltage terminal in response to a first control signal; the data writing module and the light-emission control module are deactivated in response to respective control signals; and the detection unit disconnects the signal output terminal from the detection terminal;
in the data writing stage, the data writing module connects a first terminal of the drive transistor to a data voltage terminal and connects the control terminal of the drive transistor to a second terminal of the drive transistor, in response to the second control signal; the first reset module and the light-emission control module are deactivated in response to respective control signals; and the detection unit disconnects the signal output terminal from the detection terminal; and
in the light-emission control stage, the light-emission control module connects the first terminal of the drive transistor to a first power supply voltage terminal and connects the second terminal of the drive transistor to the signal output terminal, in response to the third control signal; the first reset module and the data writing module are deactivated in response to respective control signals; and the detection unit disconnects the signal output terminal from the detection terminal.