A pixel circuit, display device, and pixel circuit driving method
A technology of pixel circuit and driving module, applied in the field of pixel circuit and display device, can solve problems such as short-term afterimage and achieve the effect of improving hysteresis effect
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Embodiment 1
[0050] This embodiment provides a pixel circuit, such as figure 2 As shown, it includes a plurality of pixel units 100 and a bias voltage adjustment module 2; the bias voltage adjustment module 2 is used to adjust the bias voltage of the driving module 1 before data writing to control each pixel unit 100 to be at the same bias voltage state; such as image 3 As shown, each pixel unit 100 includes: a driving module 1, a light emitting control module 3, a light emitting device 4, a data writing module 5, and a reset module 6; the driving module 1 is used to generate a driving current according to a control voltage during the light emitting phase ; the light emitting control module 3 is used to output the driving current to the light emitting device 4 during the light emitting stage, so as to drive the light emitting device 4 to emit light; the data writing module 5 is used to write data voltage and threshold voltage Entering the driving module 1; the reset module 6 is used to ...
Embodiment 2
[0055] This embodiment provides a pixel circuit, such as Figure 2-5 As shown, similar to the pixel circuit in Embodiment 1, it includes a plurality of pixel units 100 and a bias voltage adjustment module 2; the bias voltage adjustment module 2 is used to adjust the bias voltage of the driving module 1 before data writing to control Each pixel unit 100 is in the same bias state; each pixel unit 100 includes: a driving module 1, a light emitting control module 3, a light emitting device 4, a data writing module 5, and a reset module 6; the driving module 1 is used for In the light emitting stage, a driving current is generated according to the control voltage; the light emitting control module 3 is used to output the driving current to the light emitting device 4 in the light emitting stage, so as to drive the light emitting device 4 to emit light; the data writing module 5 It is used to write data voltage and threshold voltage into the driving module 1; the reset module 6 is u...
Embodiment 3
[0073] This embodiment provides a method for driving a pixel circuit, using the pixel circuit of the first type in the above-mentioned embodiment 2, such as Figure 8 As shown, the method includes:
[0074] S01. In the F1 bias adjustment stage, the bias adjustment module adjusts the bias voltage of the driving module to control each pixel unit to be in the same bias state;
[0075] see Figure 4 , Figure 5 , when the bias signal line Total RST outputs a low level, the eighth transistor T8 connected to the bias signal line Total RST is turned on. At this time, the first low level input terminal VINT1 enters the control electrode of the drive transistor T7, and the third low level The level input terminal EM inputs a low level, the fourth transistor T4 is turned on, and the first power supply terminal VDD flows into the first pole of the driving transistor T7, ensuring that the driving transistor T7 is in the same bias voltage (Vgs=VINT-VDD) state, driving Transistors T7 are...
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