Pixel circuit and driving method thereof, display apparatus
A pixel circuit and power supply technology, applied in static indicators, instruments, etc., can solve problems such as uneven brightness of display devices, and achieve the effect of prolonging the service life
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Embodiment 1
[0047] figure 2 It is a schematic structural diagram of a pixel circuit provided by an embodiment of the present invention.
[0048] In the embodiment of the present invention, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor and the fifth thin film transistor are all P-type thin film transistors as an example. illustrate.
[0049] Such as figure 2 As shown, the pixel circuit includes: a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, a fourth thin film transistor T4, a fifth thin film transistor T5, a storage capacitor C1 and a light emitting diode OLED, wherein:
[0050] The source of the first thin film transistor T1 is respectively connected to the drain of the second thin film transistor T2 and the drain of the fifth thin film transistor T5, and the source of the second thin film transistor T2 is connected to the data line VDATA , the sour...
Embodiment 2
[0070] Figure 4 A timing diagram of a driving method for a pixel circuit provided by an embodiment of the present invention. The method is described below.
[0071] In the embodiment of the present invention, the scan cycle of the pixel circuit includes a first phase, a second phase and a third phase, wherein:
[0072] In the first stage, the first scanning line S1 controls the second thin film transistor T2 to be in an off state, and the second scanning line S2 controls the fifth thin film transistor T5 to change from an on state to an off state, so The third scan line S3 controls the fourth thin film transistor T4 to change from an off state to an on state, the fourth scan line S4 controls the third thin film transistor T3 to be in an on state, and the second power supply VSS provides Initialize the gate of the first thin film transistor T1 with a voltage of ;
[0073] In the second stage, the first scanning line S1 controls the second thin film transistor T2 to change fro...
Embodiment 3
[0099] Such as Figure 5 as shown, Figure 5 A schematic structural diagram of another pixel circuit provided by an embodiment of the present invention.
[0100] In the embodiment of the present invention, the first thin film transistor, the second thin film transistor, and the fifth thin film transistor are P-type thin film transistors, and the third thin film transistor and the fourth thin film transistor are N-type thin film transistors. Example to illustrate.
[0101] exist Figure 5 In the pixel circuit shown, the first thin film transistor T1 , the second thin film transistor T2 and the fifth thin film transistor T5 are P-type thin film transistors, and the third thin film transistor T3 and fourth thin film transistor T4 are N-type thin film transistors.
[0102] It should be noted that, based on the content described in Embodiment 1 and Embodiment 2 above, in the three stages of the scanning cycle, in the same stage: when the first scanning line S1 controls the secon...
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