Pixel circuit, driving method and display panel

Abstract

The application provides a pixel circuit and a driving method and a display panel. The pixel circuit comprises a driving module, a light-emitting module, a first light-emitting control module and an aging control signal line. The driving module is used for controlling the light-emitting module to emit light according to a control signal of a control terminal in a light-emitting stage. The first light-emitting control module is used for being turned on in the light-emitting stage and turned off in an aging stage in response to a signal on the light-emitting control signal line. The aging control signal line is used for writing an aging voltage to a second terminal of the driving module in the aging stage. The pixel circuit provided by the application drives the first light-emitting control module to be turned off by using the signal on the light-emitting control signal line in the aging stage, so that the light-emitting module is prevented from being lighted, thereby reducing the risk of screen burning. Meanwhile, the aging voltage is written to the second terminal of the driving module by using the aging control signal line, so that the source-drain voltage difference of the driving module can be appropriately increased by adjusting the aging voltage, and the probability of occurrence of bright spots can be better reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a pixel circuit and driving method, and a display panel. Background Technology

[0002] With the development of display technology, the application of display panels is becoming more and more widespread, and correspondingly, the requirements for display panels are also becoming higher and higher. Before leaving the factory, existing display panels need to undergo aging treatment on the driving transistors in their pixel circuits to improve the leakage current problem of the driving transistors.

[0003] However, existing display panels suffer from burn-in issues during the aging process. Summary of the Invention

[0004] In view of this, the purpose of this application is to propose a pixel circuit that can effectively reduce the risk of screen burn-in during aging.

[0005] To achieve the above objectives, this application provides a pixel circuit comprising:

[0006] The module consists of a driver module, a light-emitting module, a first light-emitting control module, and an aging control signal line.

[0007] The first end of the driving module is connected to the first power line, and the cathode of the light-emitting module is connected to the second power line. The driving module is used to control the light-emitting module to emit light according to the control signal of its own control end during the light-emitting stage.

[0008] The control terminal of the first light-emitting control module is connected to the light-emitting control signal line. The first terminal of the first light-emitting control module is connected to the second terminal of the driving module. The second terminal of the first light-emitting control module is connected to the anode of the light-emitting module. The first light-emitting control module is used to respond to the signal on the light-emitting control signal line to turn on during the light-emitting stage and turn off during the aging stage.

[0009] The aging control signal line is connected to the second terminal of the drive module, and the aging control signal line is used to write the aging voltage into the second terminal of the drive module during the aging stage.

[0010] In one embodiment, the second terminals of the driving modules in each pixel circuit are connected via the aging control signal line;

[0011] During the aging stage, the aging voltage is written to the second terminal of the driving module in each pixel circuit through the aging control signal line;

[0012] Preferably, the aging voltage includes -20V to -25V.

[0013] In one embodiment, a switch module is connected to the aging control signal line between the second terminal of the driving module in each of the pixel circuits, and the control terminal of the switch module is connected to the switch control signal line.

[0014] The switching module is used to turn on during the aging stage and turn off during the light-emitting stage in response to a signal on the switching control signal line.

[0015] In one embodiment, the pixel circuit further includes:

[0016] The data writing module has a control terminal connected to a second scan signal line, a first terminal connected to a data line, and a second terminal connected to a first terminal of the driving module. The data writing module is used to respond to the signal on the second scan signal line and write a voltage related to the data voltage on the data line to the control terminal of the driving module during the data writing phase.

[0017] In one embodiment, the pixel circuit further includes:

[0018] A storage module, connected to the control terminal of the drive module, is used to store the voltage of the control terminal of the drive module;

[0019] Preferably, the storage module includes a storage capacitor, the first end of which is connected to the control terminal of the drive module, and the second end of which is connected to the first power line.

[0020] In one embodiment, the pixel circuit further includes:

[0021] The second light-emitting control module has a first end connected to the first end of the driving module, a control end connected to the light-emitting control signal line, and a second end connected to the first power line. The second light-emitting control module is used to conduct in response to the signal on the light-emitting control signal line during the light-emitting phase.

[0022] In one embodiment, the pixel circuit further includes:

[0023] A first reset module, wherein the control terminal of the first reset module is connected to a first scan signal line, the first terminal of the first reset module is connected to the control terminal of the drive module, and the second terminal of the first reset module is connected to a reference signal line, and the first reset module is used to reset the control terminal of the drive module.

[0024] Preferably, the pixel circuit further includes:

[0025] The second reset module has a control terminal connected to the first scan signal line, a first terminal connected to the anode of the light-emitting module, and a second terminal connected to the reference signal line. The second reset module is used to reset the anode of the light-emitting module.

[0026] Preferably, the pixel circuit further includes:

[0027] The compensation module has its control terminal connected to the second scan signal line, its first terminal connected to the control terminal of the drive module, and its second terminal connected to the second terminal of the drive module. The compensation module is used to compensate the threshold voltage of the drive module.

[0028] Based on the same inventive concept, this application also discloses a pixel circuit driving method applied to the aforementioned pixel circuit, wherein the pixel circuit includes a driving module and a first light-emitting control module, and the method includes:

[0029] During the aging stage, the first light-emitting control module is turned off by using the signal on the light-emitting control signal line, and the aging voltage is written to the second terminal of the driving module by using the aging control signal line.

[0030] In one embodiment, the pixel circuit driving method further includes:

[0031] During the aging stage, the second terminal of the driving module in each pixel circuit is connected using the aging control signal line, and the aging voltage is written to the second terminal of the driving module in each pixel circuit through the aging control signal line.

[0032] Preferably, it further includes:

[0033] During the light-emitting stage, the aging control signal line connected between the second terminals of the driving modules in each pixel circuit is disconnected using the switching module.

[0034] Preferably, in the light-emitting stage, disconnecting the aging control signal line connected between the second terminals of the driving modules in each pixel circuit using the switching module includes:

[0035] During the light-emitting stage,

[0036] The switch module is turned off by using a signal on the switch control signal line connected to the control terminal of the switch module, thereby disconnecting the aging control signal line connected between the second terminals of the drive modules in each pixel circuit.

[0037] Based on the same inventive concept, this application also discloses a display panel that includes the pixel circuit described above.

[0038] Compared with the prior art, the pixel circuit provided in this application reduces the risk of screen burn-in by using the signal on the light emission control signal line to drive the first light emission control module to turn off during the aging stage, thereby preventing the light emission module from being lit. At the same time, by using the aging control signal line to write the aging voltage to the second terminal of the driving module, the source-drain voltage difference of the driving module can be appropriately increased by adjusting the aging voltage, which can better reduce the probability of bright spots. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic diagram of a pixel circuit provided in an embodiment of this application;

[0041] Figure 2 A schematic diagram of a pixel circuit provided in an embodiment of this application;

[0042] Figure 3 A schematic diagram of a pixel circuit provided in another embodiment of this application;

[0043] Figure 4 A schematic diagram of a pixel circuit provided in another embodiment of this application;

[0044] Figure 5 A schematic diagram of a pixel circuit provided in another embodiment of this application;

[0045] Figure 6 A schematic diagram of a pixel circuit provided in another embodiment of this application;

[0046] Figure 7 A schematic diagram of a pixel circuit provided in another embodiment of this application;

[0047] Figure 8 A circuit diagram of a pixel circuit provided in another embodiment of this application;

[0048] Figure 9 A flowchart of a pixel circuit driving method provided in another embodiment of this application.

[0049] Marker explanation:

[0050] 100. Pixel circuit. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0052] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] When aging the driving transistors in the pixel circuit, a large voltage difference needs to be applied between the source and drain of the driving transistor to achieve a better bright spot elimination effect. Currently, the voltage on the first power line VDD and the voltage on the second power line VSS are usually used as the most effective positive and negative voltages for eliminating bright spots. However, as the voltage difference increases, the current also increases, and the brightness of the screen also increases. During the aging process, the screen may experience a "bright spot" phenomenon, leading to screen burn-in.

[0054] Based on this, this application provides a pixel circuit scheme to solve the above problems, as detailed in the following embodiments.

[0055] Reference Figure 1 As shown, one embodiment of this application discloses a pixel circuit 100, which includes a driving module, a light-emitting module, a first light-emitting control module, and an aging control signal line Vlow.

[0056] The first end of the driving module is connected to the first power line VDD, and the cathode of the light-emitting module is connected to the second power line VSS. The driving module is used to control the light-emitting module to emit light according to the control signal of its own control end during the light-emitting stage.

[0057] The control terminal of the first light-emitting control module is connected to the light-emitting control signal line EM. The first terminal of the first light-emitting control module is connected to the second terminal of the drive module. The second terminal of the first light-emitting control module is connected to the anode of the light-emitting module. The first light-emitting control module is used to respond to the signal on the light-emitting control signal line EM to turn on during the light-emitting stage and turn off during the aging stage.

[0058] The aging control signal line Vlow is connected to the second terminal of the drive module. The aging control signal line Vlow is used to write the aging voltage to the second terminal of the drive module during the aging stage.

[0059] In this system, the first power line VDD is connected to a first power supply voltage, and the second power line VSS is connected to a second power supply voltage. The first power supply voltage is positive, and the second power supply voltage is negative. During the aging phase, the voltage on the first power line VDD and the aging voltage serve as the positive and negative voltages for eliminating bright spots.

[0060] The pixel circuit 100 provided in this embodiment reduces the risk of screen burn-in by using the signal on the light-emitting control signal line EM to drive the first light-emitting control module to turn off during the aging stage, thus preventing the light-emitting module from being lit. Simultaneously, the aging control signal line Vlow writes the aging voltage to the second terminal of the driving module. By adjusting the aging voltage, the source-drain voltage difference of the driving module can be appropriately increased, further reducing the probability of bright spots. At the same time, it avoids damage to the first light-emitting control module caused by large current.

[0061] Reference Figure 2 As shown, in one embodiment, the second ends of the driving modules in each pixel circuit are connected via an aging control signal line Vlow.

[0062] During the aging stage, the aging voltage is written to the second terminal of the driving module in each pixel circuit 100 via the aging control signal line Vlow. It is not necessary to prepare an aging control signal line Vlow for each pixel circuit 100; only one aging control signal line Vlow is needed in each display panel to provide the aging signal. This aging signal can be written to the second terminal of the driving module in each pixel circuit 100 via the aging control signal line Vlow, which helps reduce cost and circuit complexity. Preferably, the aging voltage includes -25V to -20V, such as -25V, -22V, -20V, etc. This negative voltage ensures a sufficiently large source-drain voltage difference in the driving module, better reducing the probability of bright spots.

[0063] Reference Figure 3 As shown, in one embodiment, a switch module is connected to the aging control signal line Vlow, which is connected to the second terminal of the driving module in each pixel circuit. The control terminal of the switch module is connected to the switch control signal line Vzl. The switch module is used to turn on in response to the signal on the switch control signal line Vzl during the aging stage and turn off during the light emission stage.

[0064] Specifically, the switching module is turned on during the aging stage, facilitating the writing of the aging voltage in the aging control signal line Vlow to the second terminal of the driving module in each pixel circuit 100. The switching module is turned off during the aging stage to prevent interference between the second terminals of the driving modules in each pixel circuit 100, thereby affecting the normal screen display effect.

[0065] Reference Figure 4 As shown, in one embodiment, the pixel circuit 100 further includes a data writing module. The control terminal of the data writing module is connected to the second scan signal line SACN2, the first terminal of the data writing module is connected to the data line Vdata, and the second terminal of the data writing module is connected to the first terminal of the driving module. The data writing module is used to respond to the signal on the second scan signal line SACN2 and write a voltage related to the data voltage on the data line Vdata to the control terminal of the driving module during the data writing stage. This facilitates the driving module to generate a driving current based on the data voltage during the light emission stage to drive the light emission module to emit light.

[0066] Reference Figure 5 As shown, in one embodiment, the pixel circuit 100 further includes a storage module connected to the control terminal of the driving module for storing the voltage of the control terminal of the driving module; further, the storage module includes a storage capacitor, the first end of which is connected to the control terminal of the driving module, and the second end of which is connected to the first power line VDD.

[0067] Reference Figure 6 As shown, in one embodiment, the pixel circuit 100 further includes a second light-emitting control module. The first end of the second light-emitting control module is connected to the first end of the driving module. The control end of the second light-emitting control module is connected to the light-emitting control signal line EM. The second end of the second light-emitting control module is connected to the first power line VDD. The second light-emitting control module is used to conduct in response to the signal on the light-emitting control signal line EM during the light-emitting stage, which can prevent the light-emitting module from emitting light during the data writing stage.

[0068] Reference Figure 7 As shown, in one embodiment, the pixel circuit 100 further includes a first reset module. The control terminal of the first reset module is connected to the first scan signal line SCAN1, the first end of the first reset module is connected to the control terminal of the drive module, and the second end of the first reset module is connected to the reference signal line Vref. The first reset module is used to reset the control terminal of the drive module to improve the driving effect of the drive module.

[0069] Please continue to refer to Figure 7As shown, in one embodiment, the pixel circuit 100 further includes a second reset module. The control terminal of the second reset module is connected to the first scan signal line SCAN1, the first terminal of the second reset module is connected to the anode of the light-emitting module, and the second terminal of the second reset module is connected to the reference signal line Vref. The second reset module is used to reset the anode of the light-emitting module to improve the light-emitting effect of the light-emitting module.

[0070] Please continue to refer to Figure 7 As shown, in one embodiment, the pixel circuit 100 further includes a compensation module. The control terminal of the compensation module is connected to the second scan signal line SCAN2, the first terminal of the compensation module is connected to the control terminal of the driving module, and the second terminal of the compensation module is connected to the second terminal of the driving module. The compensation module is used to compensate the threshold voltage of the driving module. Preferably, the compensation module is a dual-gate threshold compensation transistor. Compared with a single-gate transistor, a dual-gate transistor has a lower leakage current, which is beneficial to reducing the potential fluctuation of the gate of the driving module.

[0071] In one embodiment, the pixel circuit 100 is a 7T1C circuit, and its connection relationship is detailed in [reference needed]. Figure 8 In other embodiments, the pixel circuit 100 can be a 7T2C circuit, an 8T1C circuit, or other circuits, and there is no specific limitation.

[0072] Please continue to refer to Figure 8 As shown, the driving module includes transistor T1, the light-emitting module includes OLED or AMOLED, the data writing module includes transistor T2, the compensation module includes transistor T3, the first reset module includes transistor T4, the first light-emitting control module includes transistor T6, the second light-emitting control module includes transistor T5, and the second reset module includes transistor T7.

[0073] Another embodiment of this application discloses a pixel circuit driving method, applied to the pixel circuit 100 in the above embodiment, with reference to... Figure 1 The pixel circuit 100 includes a driving module and a first light-emitting control module, and the pixel circuit driving method includes the following steps:

[0074] Step S10: During the aging stage, the first light-emitting control module is turned off by using the signal on the light-emitting control signal line EM, and the aging voltage is written to the second terminal of the drive module by using the aging control signal line Vlow.

[0075] The pixel circuit driving method provided in this embodiment reduces the risk of screen burn-in by using the signal on the luminous control signal line EM to drive the first luminous control module to turn off during the aging stage, thus preventing the luminous module from being lit. Simultaneously, the aging control signal line Vlow writes the aging voltage to the second terminal of the driving module. By adjusting the aging voltage, the source-drain voltage difference of the driving module can be appropriately increased, further reducing the probability of bright spots. At the same time, it avoids damage to the first luminous control module caused by large current.

[0076] Reference Figure 9 As shown, in one embodiment, the pixel circuit driving method includes the following steps:

[0077] Step S20: During the aging stage, the second terminal of the driving module in each pixel circuit 100 is connected using the aging control signal line Vlow, and the aging voltage is written to the second terminal of the driving module in each pixel circuit 100 through the aging control signal line Vlow; refer to Figure 2 There is no need to prepare an aging control signal line Vlow for each pixel circuit 100. Only one aging control signal line Vlow is needed in each display panel to provide the aging signal. This aging signal can be written to the second terminal of the driving module in each pixel circuit 100 through the aging control signal line Vlow, which helps to reduce cost and circuit complexity. Preferably, the aging voltage includes -25V to -20V, such as -25V, -22V, -20V, etc. This negative voltage can ensure that the source-drain voltage difference of the driving module is large enough, and better reduce the probability of bright spots.

[0078] Furthermore, the pixel circuit driving method includes the following steps:

[0079] Step S30: During the light emission stage, the aging control signal line Vlow, which is connected between the second terminals of the driving modules in each pixel circuit, is disconnected using the switching module.

[0080] Further, step S30, during the light-emitting stage, involves disconnecting the aging control signal line Vlow between the second terminals of the driving modules in each pixel circuit using a switching module; including:

[0081] During the light-emitting stage, the switch module is turned off using the signal on the switch control signal line Vzl connected to the control terminal of the switch module, thereby disconnecting the aging control signal line Vlow connected to the second terminal of the drive module in each pixel circuit. (Refer to...) Figure 3 Specifically, the switching module is turned on during the aging stage, facilitating the aging voltage in the aging control signal line Vlow to the second terminal of the driving module in each pixel circuit 100. The switching module is turned off during the aging stage to prevent interference between the second terminals of the driving modules in each pixel circuit 100, thus avoiding affecting the normal screen display effect.

[0082] In one embodiment, the pixel circuit 100 is a 7T1C circuit, and its connection relationship is detailed in [reference needed]. Figure 8 In other embodiments, the pixel circuit 100 can be a 7T2C circuit, an 8T1C circuit, or other circuits, and there is no specific limitation.

[0083] Another embodiment of this application discloses a display panel that includes the pixel circuit 100 in the above embodiments.

[0084] The display panel provided in this embodiment uses a pixel circuit 100 to drive the first light-emitting control module to turn off during the aging stage using a signal on the light-emitting control signal line EM, thus preventing the light-emitting module from being lit and reducing the risk of screen burn-in. Simultaneously, the aging control signal line Vlow writes the aging voltage to the second terminal of the driving module. By adjusting the aging voltage, the source-drain voltage difference of the driving module can be appropriately increased, further reducing the probability of bright spots. This also avoids damage to the first light-emitting control module caused by high current. This contributes to improving the display performance of the display panel.

[0085] Another embodiment of this invention discloses a display device, which includes the display panel described in the above embodiments. This display device can be mounted on smart devices (such as mobile phones, VR devices, computers, televisions, in-vehicle displays, etc.).

[0086] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0087] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0088] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A pixel circuit, characterized by comprising: The pixel circuit comprises a driving module, a light-emitting module, a first light-emitting control module and an aging control signal line. A first end of the driving module is connected with a first power supply line, and a cathode of the light-emitting module is connected with a second power supply line. The driving module is used for controlling the light-emitting module to emit light according to a control signal of a control end of the driving module in a light-emitting stage. A control end of the first light-emitting control module is connected with a light-emitting control signal line, a first end of the first light-emitting control module is connected with a second end of the driving module, a second end of the first light-emitting control module is connected with an anode of the light-emitting module, and the first light-emitting control module is used for being turned on in the light-emitting stage and turned off in an aging stage in response to a signal on the light-emitting control signal line. The aging control signal line is connected with the second end of the driving module, and the aging control signal line is used for writing an aging voltage into the second end of the driving module in the aging stage.

2. The pixel circuit of claim 1, wherein, The second ends of the driving modules in the respective pixel circuits are connected through the aging control signal line, and the aging voltage is written into the second end of the driving module in each of the pixel circuits through the aging control signal line in the aging stage.

3. The pixel circuit of claim 1, wherein, The aging voltage comprises -25V to -20V.

4. The pixel circuit of claim 2, wherein, A switch module is connected with the aging control signal line between the second ends of the driving modules in the respective pixel circuits, and a control end of the switch module is connected with a switch control signal line. The switch module is used for being turned on in the aging stage and turned off in the light-emitting stage in response to a signal on the switch control signal line.

5. The pixel circuit of claim 1, wherein, The pixel circuit further comprises: A data writing module, a control end of the data writing module is connected with a second scanning signal line, a first end of the data writing module is connected with a data line, a second end of the data writing module is connected with the first end of the driving module, and the data writing module is used for writing a voltage related to a data voltage on the data line into the control end of the driving module in a data writing stage in response to a signal on the second scanning signal line.

6. The pixel circuit of claim 1, wherein, The pixel circuit further comprises: A storage module, the storage module is connected with the control end of the driving module and is used for storing a voltage of the control end of the driving module.

7. The pixel circuit of claim 6, wherein, The storage module comprises a storage capacitor, a first end of the storage capacitor is connected with the control end of the driving module, and a second end of the storage capacitor is connected with the first power supply line.

8. The pixel circuit of claim 1, wherein, The pixel circuit further comprises: A second light-emitting control module, a first end of the second light-emitting control module is connected with the first end of the driving module, a control end of the second light-emitting control module is connected with the light-emitting control signal line, a second end of the second light-emitting control module is connected with the first power supply line, and the second light-emitting control module is used for being turned on in the light-emitting stage in response to a signal on the light-emitting control signal line.

9. The pixel circuit of claim 1, wherein, The pixel circuit further comprises: A first reset module, a control end of the first reset module is connected with a first scanning signal line, a first end of the first reset module is connected with the control end of the driving module, a second end of the first reset module is connected with a reference signal line, and the first reset module is used for resetting the control end of the driving module.

10. The pixel circuit of claim 1, wherein, The pixel circuit further comprises: A second reset module, a control end of the second reset module is connected with a first scan signal line, a first end of the second reset module is connected with an anode of the light-emitting module, and a second end of the second reset module is connected with a reference signal line, and the second reset module is used for resetting the anode of the light-emitting module.

11. The pixel circuit of claim 1, wherein, The pixel circuit further comprises: A compensation module, a control end of the compensation module is connected with a second scan signal line, a first end of the compensation module is connected with a control end of the driving module, and a second end of the compensation module is connected with a second end of the driving module, and the compensation module is used for compensating a threshold voltage of the driving module.

12. A pixel circuit driving method applied to the pixel circuit according to any one of claims 1-11, characterized in that, The pixel circuit comprises a driving module and a first light-emitting control module, and the method comprises: In the aging stage, the first light-emitting control module is turned off by using a signal on the light-emitting control signal line, and an aging voltage is written into the second end of the driving module by using the aging control signal line.

13. The pixel circuit driving method according to claim 12, wherein The pixel circuit driving method further comprises: In the aging stage, the second end of the driving module in each pixel circuit is connected by using the aging control signal line, and the aging voltage is written into the second end of the driving module in each pixel circuit through the aging control signal line.

14. The pixel circuit driving method according to claim 12, wherein The pixel circuit driving method further comprises: In the light-emitting stage, the aging control signal line connected between the second ends of the driving modules in each pixel circuit is disconnected by using the switch module.

15. The pixel circuit driving method according to claim 14, wherein The pixel circuit driving method further comprises: in the light-emitting stage, the aging control signal line connected between the second ends of the driving modules in each pixel circuit is disconnected by using the switch module; comprising: In the light-emitting stage, The switch module is turned off by using a signal on a switch control signal line connected with a control end of the switch module, so as to disconnect the aging control signal line connected between the second ends of the driving modules in each pixel circuit.

16. A display panel, characterized by The pixel circuit comprises the pixel circuit according to any one of claims 1-11.

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