Pixel compensation circuit, driving method, and display device
View Patent ↗A pixel compensation circuit is provided. The pixel compensation circuit includes: a first transistor connected to a first scan line, wherein a first terminal of the first transistor is connected to a data line and a second terminal of the first transistor is connected to a second terminal of the driving transistor; a second transistor connected to a first scan line, wherein a first terminal of the second transistor is connected to a first terminal of the driving transistor and a second terminal of the second transistor is connected to a control terminal of the driving transistor; and a third transistor, wherein a control terminal of the third transistor is connected to a control line, a first terminal of the third transistor is connected to a supply voltage line, and a second terminal of the third transistor is connected to the first terminal of the driving transistor.
1. A driving method for a pixel compensation circuit, comprising:
at a first stage, turning on a fifth transistor and a sixth transistor, turning off a first transistor, a second transistor, a third transistor, a fourth transistor, and a driving transistor, resetting a control terminal of the driving transistor to a first reset voltage, and resetting a second terminal of a light-emitting element to a second reset voltage;
at a second stage, turning on the first transistor, the second transistor, and the driving transistor, turning off the fifth transistor and the sixth transistor, and providing a data signal voltage to a first terminal of the first transistor through a data line, wherein at this time, a voltage at the control terminal of the driving transistor is a sum of the data signal voltage and a threshold voltage of the driving transistor, and a voltage stored by the storage capacitor is equal to the threshold voltage of the driving transistor; and
at a third stage, turning on the third transistor and the fourth transistor, turning off the first transistor and the second transistor, and driving the light-emitting element to emit light by the driving transistor.
2. The driving method for the pixel compensation circuit of claim 1 , wherein when a first scan signal provided by a first scan line is at a low level, the first transistor and the second transistor are controlled to be turned on, and when the first scan signal is at a high level, and the first transistor and the second transistor are controlled to be turned off;
when a control signal provided by a control line is at a low level, the third transistor and fourth transistor are controlled to be turned on, and when the control signal is at a high level, the third transistor and the fourth transistor are controlled to be turned off;
when a second scan signal is at a low level, the fifth transistor is controlled to be turned on, and when the second scan signal is at a high level, the fifth transistor is controlled to be turned off; and
when a third scan signal is at a low level, the sixth transistor is controlled to be turned on, and when the third scan signal is at a high level, the sixth transistor is controlled to be turned off.