Patent ID: 11961470
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A sensing method of a threshold voltage of the pixel driving module of claim 4, comprising:
in a first reset phase, inputting a turn-on signal to the gate of the second transistor and the gate of the third transistor via the first gate line terminal and the second gate line terminal, respectively; controlling the second switch and the third switch to be turned on and the first switch, the fourth switch, the fifth switch and the sixth switch to be turned off; and inputting a first data signal to the first electrode of the second transistor via the data line terminal, such that a signal from the first signal terminal is written into the sensing line to reset the sensing line, and the first data signal is written into the storage capacitor;
in a first charging phase, inputting a turn-on signal to the gate of the second transistor and the gate of the third transistor via the first gate line terminal and the second gate line terminal, respectively; controlling the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch to be turned off, such that a signal from the first voltage terminal is written into the sensing line; and
in a first sensing phase, controlling the fourth switch and the sixth switch to be turned on and the first switch, the second switch, the third switch and the fifth switch to be turned off without inputting a turn-on signal to the gate of the second transistor and the gate of the third transistor via the first gate line terminal and the second gate line terminal, respectively; and
acquiring a voltage signal at the output terminal of the operation amplifier, so as to calculate a threshold voltage of the first transistor according to the first data signal and the voltage signal at the output terminal of the operation amplifier.