Amoled pixel unit and its driving method, amoled display device
A technology of pixel unit and pixel circuit, applied in static indicators, instruments, etc., can solve the problem of uneven brightness of AMOLED display devices, achieve uniform brightness, reduce voltage sources, and simplify AMOLED pixel units.
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Embodiment 1
[0043] Please refer to image 3 , which is a circuit diagram of an AMOLED pixel unit according to Embodiment 1 of the present invention. Such as image 3 As shown, the AMOLED pixel unit 30 includes: a pixel circuit 32 and an organic light-emitting diode 34 connected to the pixel circuit 32; the AMOLED pixel unit is used to communicate with the first scanning control line Sn1 and the second scanning control line Sn2, the third scanning control line Sn3 are connected to the first power supply ELVDD, the second power supply ELVSS and the data line Dm; the pixel circuit 32 includes: a capacitor Cs, an initialization unit connected to the capacitor Cs, a data writing unit and a light emitting control unit; where,
[0044] The data writing unit includes a second transistor M2, a third transistor M3 and a fourth transistor M4, the source / drain of the second transistor M2 is connected to the source / drain of the third transistor M3, so The gate of the second transistor M2 is connect...
Embodiment 2
[0068] Please refer to Figure 5 , which is a circuit diagram of an AMOLED pixel unit according to Embodiment 2 of the present invention. Such as Figure 5 As shown, the AMOLED pixel unit 40 includes: a pixel circuit 42 and an organic light-emitting diode 44 connected to the pixel circuit 42; the AMOLED pixel unit is used to communicate with the first scanning control line Sn1 and the second scanning control line Sn2, the third scanning control line Sn3 are connected to the first power supply ELVDD, the second power supply ELVSS and the data line Dm; the pixel circuit 42 includes: a capacitor Cs, an initialization unit connected to the capacitor Cs, a data writing unit and a light emitting control unit; where,
[0069] The data writing unit includes a second transistor M2, a third transistor M3 and a fourth transistor M4, the source / drain of the second transistor M2 is connected to the source / drain of the third transistor M3, so The gate of the second transistor M2 is conne...
Embodiment 3
[0092] Please refer to Figure 7 , which is a circuit diagram of an AMOLED pixel unit according to Embodiment 3 of the present invention. Such as Figure 7 As shown, the AMOLED pixel unit 50 includes: a pixel circuit 52 and an organic light-emitting diode 54 connected to the pixel circuit 52; the AMOLED pixel unit is used to communicate with the second scan control line Sn2 and the third scan control line Sn3 is connected to the first power supply ELVDD, the second power supply ELVSS and the data line Dm; the pixel circuit 52 includes: a capacitor Cs, an initialization unit connected to the capacitor Cs, a data writing unit and a light emission control unit; wherein,
[0093] The data writing unit includes a second transistor M2, a third transistor M3 and a fourth transistor M4, the source / drain of the second transistor M2 is connected to the source / drain of the third transistor M3, so The gate of the second transistor M2 is connected to the gate of the fourth transistor M4,...
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