Pixel circuit, pixel driving method and display panel

Abstract

This application belongs to the field of display driving technology, specifically relating to a pixel circuit, a pixel driving method, and a display panel. The pixel circuit includes a pixel driving module for outputting a corresponding driving current to a driving node in response to a scan signal on a scan line and a data signal on a data line; and a light-emitting control module for controlling the driving current on the driving node to flow to a low level during the scan trigger phase; controlling the driving current on the driving node to flow to the light-emitting module during the light-emitting phase; and controlling the driving current on the driving node to flow to a low level again in response to the light-emitting control signal output by the light-emitting control line during the extinguishing phase. This application achieves normal display function by having the pixel driving module, the light-emitting module, and the light-emitting control module work together to convert the wide-pulse light-emitting control signal into a narrow-pulse signal similar to the scan signal, thereby improving the compatibility between the light-emitting control signal and the scan signal.

Description

Technical Field

[0001] This disclosure belongs to the field of display driving technology, specifically relating to a pixel circuit, a pixel driving method, and a display panel. Background Technology

[0002] AMOLED (Active Matrix Organic Light Emitting Diode) display technology is widely used in various display devices due to its advantages such as self-illumination, high contrast, and low power consumption. Its pixel circuit typically adopts a 3T1C structure, controlling the current of the driving transistors through data voltage, thereby adjusting the brightness of the OLED.

[0003] However, in current AMOLED pixel circuits, the emission control signal used to control pixel emission has a significantly different waveform from the scanning signal, making the emission driving circuit incompatible with mature scanning driving circuits. This necessitates a separate and complex circuit design. This not only increases the complexity of the circuit design and the difficulty of control but also occupies layout space, hindering the implementation of narrow bezel designs for display panels.

[0004] Therefore, improving the compatibility between the light emission control signal and the scanning signal in the pixel circuit to simplify the design of the peripheral driving circuit is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a pixel circuit, a pixel driving method, and a display panel. Through the coordinated operation of a pixel driving module, a light-emitting module, and a light-emitting control module, while realizing normal display functions, the wide-pulse light-emitting control signal is converted into a narrow-pulse signal similar to the scanning signal, thereby improving the compatibility between the light-emitting control signal and the scanning signal.

[0006] In a first aspect, this application provides a pixel circuit, the pixel circuit comprising: a pixel driving module connected to a scan line, a data line, and a driving node, configured to: output a corresponding driving current to the driving node in response to a scan signal on the scan line and a data signal on the data line; a light-emitting module configured to: emit light of a corresponding brightness in response to the driving current; and a light-emitting control module connected to a light-emitting control line and the driving node, configured to: control the driving current on the driving node to flow to a low level during a scan triggering phase; control the driving current on the driving node to flow to the light-emitting module during a light-emitting phase; and control the driving current on the driving node to flow to a low level again in response to a light-emitting control signal output by the light-emitting control line during an extinguishing phase; wherein the waveform of the light-emitting control signal is the same as the waveform of the scan signal, and there is a preset phase difference between the light-emitting control signal and the scan signal.

[0007] Optionally, the light-emitting control module includes: a switching unit connected to the control node, the driving node, and a low-level terminal, configured to: control the switching between the driving node and the low-level terminal based on the potential on the control node; a light-emitting triggering unit connected to the control node, configured to: pull the control node down to a low level during the light-emitting phase to disconnect the switching unit; an extinguishing triggering unit connected to the light-emitting control line and the control node, configured to: transmit the light-emitting control signal to the control node in response to the light-emitting control signal during the extinguishing phase to turn on the switching unit; and an energy storage unit connected to the control node, configured to: store the potential of the control node.

[0008] Optionally, the light-emitting triggering unit includes: a first transistor, the control terminal of the first transistor being connected to the subsequent scan line, the first terminal of the first transistor being connected to the control node, and the second terminal of the first transistor being connected to a low-level terminal; wherein, the subsequent scan line is the scan line corresponding to the i-th row after the current scan line, and the scan signal on the subsequent scan line and the scan signal on the current scan line do not overlap in timing, i≥1.

[0009] Optionally, the switching unit includes a second transistor, the control terminal of the second transistor is connected to the control node, the first terminal of the second transistor is connected to the driving node, and the second terminal of the second transistor is connected to the low-level terminal.

[0010] Optionally, the light-emitting triggering unit includes: a first transistor, wherein the control terminal of the first transistor is connected to the current scan line, the first terminal of the first transistor is connected to the control node, and the second terminal of the first transistor is connected to a low-level terminal;

[0011] Optionally, the switching unit includes: a second transistor, the control terminal of which is connected to the control node, the first terminal of which is connected to the driving node, and the second terminal of which is connected to the low-level terminal; and a third transistor, the control terminal of which is connected to the current stage scan line, the first terminal of which is connected to the driving node, and the second terminal of which is connected to the low-level terminal.

[0012] Optionally, the extinguishing trigger unit includes: a fourth transistor, the control terminal of the fourth transistor being connected to the light-emitting control line, the first terminal of the fourth transistor being connected to the control terminal of the fourth transistor, and the second terminal of the fourth transistor being connected to the control node.

[0013] Optionally, the pixel driving module includes: a fifth transistor, a sixth transistor, and a first capacitor; the control terminal of the fifth transistor is connected to the scan line of the current stage, the first terminal of the fifth transistor is connected to the data line, and the second terminal of the fifth transistor is connected to the intermediate node; the control terminal of the sixth transistor is connected to the intermediate node, the first terminal of the sixth transistor is connected to the power supply terminal, and the second terminal of the sixth transistor is connected to the driving node; the first terminal of the first capacitor is connected to the intermediate node, and the second terminal of the first capacitor is connected to the driving node.

[0014] Optionally, the extinguishing trigger unit further includes: a seventh transistor, the control terminal of the seventh transistor being connected to the light-emitting control line, the first terminal of the seventh transistor being connected to the intermediate node, and the second terminal of the seventh transistor being connected to the driving node.

[0015] Secondly, this application provides a pixel driving method applied to a pixel circuit. The pixel driving method includes: during a scan triggering phase, guiding the driving current on the driving node to a low level through a light emission control module to prevent the light emission module from emitting light; during a light emission phase after the scan triggering phase ends, guiding the driving current on the driving node to the light emission module through the light emission control module to drive the light emission module to emit light; and during a extinguishing phase after the light emission phase ends, guiding the driving current on the driving node back to the low level through the light emission control module in response to a light emission control signal on the light emission control line to extinguish the light emission module.

[0016] Optionally, the light-emitting control module includes a switching unit, a light-emitting triggering unit, an extinguishing triggering unit, and an energy storage unit; guiding the driving current on the driving node to a low-level end through the light-emitting control module includes: during the scanning triggering phase, the switching unit responds to the effective potential of the control node to open the path between the driving node and the low-level end, so that the driving current flows to the low-level end.

[0017] Optionally, guiding the drive current on the drive node to the light-emitting module through the light-emitting control module includes: during the light-emitting phase, pulling the control node down to a low level through the light-emitting trigger unit to disconnect the switching unit, thereby disconnecting the path between the drive node and the low-level terminal, so that the drive current flows to the light-emitting module.

[0018] Optionally, the light-emitting control module guides the driving current on the driving node back to the low-level terminal in response to the light-emitting control signal, including: during the extinguishing phase, the extinguishing trigger unit transmits the light-emitting control signal to the control node in response to the light-emitting control signal, turns on the switching unit, and reconnects the path between the driving node and the low-level terminal so that the driving current flows to the low-level terminal again.

[0019] Optionally, the energy storage unit stores the potential of the control node so that the control node maintains the current potential after the light-emitting trigger unit or the extinguishing trigger unit is turned off.

[0020] Thirdly, this application provides a display panel, which includes multiple scan lines, multiple data lines, and multiple light emission control lines. The display panel also includes an array of pixel circuits, which are electrically connected to the scan lines, the data lines, and the light emission control lines, respectively.

[0021] The technical solution provided in this application has at least the following beneficial effects:

[0022] This application utilizes a pixel driving module to generate driving current to the driving node in response to scanning and data signals, providing a stable and controllable current source for the light-emitting module. The light-emitting control module guides the driving current to a low level during the scanning trigger phase, to the light-emitting module during the light-emitting phase, and back to a low level during the extinguishing phase in response to the light-emitting control signal. This achieves precise timing control of the light-emitting module's illumination and extinguishing, ensuring normal display functionality. In particular, by configuring the waveform of the light-emitting control signal to be identical to that of the scanning signal, with a preset phase difference between them, the light-emitting driving circuit driving the light-emitting control signal can employ the same circuit architecture as the scanning driving circuit driving the scanning signal, sharing the clock signal and noise reduction circuit. This greatly simplifies the design of peripheral driving circuits, significantly saves layout space in non-display areas, and provides key technical support for achieving narrow-bezel display panels. Simultaneously, adjusting the phase difference allows for precise control of the light-emitting duty cycle, which is particularly beneficial for accurate performance in low grayscale displays, improving overall display quality. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0024] Figure 1The image shows an OLED pixel circuit in a related technology.

[0025] Figure 2 The diagram shown is a schematic diagram of a display panel architecture provided in an embodiment of this application.

[0026] Figure 3 As shown Figure 1 The waveform diagram of the pixel circuit shown is shown.

[0027] Figure 4 The diagram shown is a schematic diagram of the architecture of a gate driving circuit provided in an embodiment of this application.

[0028] Figure 5 The diagram shown is a schematic diagram of a pixel circuit provided in an embodiment of this application.

[0029] Figure 6 The diagram shown is a driving timing diagram provided in an embodiment of this application.

[0030] Figure 7 The diagram shown is a schematic diagram of another pixel circuit provided in an embodiment of this application.

[0031] Figure 8 The diagram shown is a schematic diagram of the first pixel circuit provided in the embodiment of this application.

[0032] Figure 9 The diagram shown is another driving timing diagram provided in an embodiment of this application.

[0033] Figure 10 The diagram shown is a schematic diagram of the second pixel circuit provided in an embodiment of this application.

[0034] Figure 11 The diagram shown is another driving timing diagram provided in an embodiment of this application.

[0035] Figure 12 The diagram shown is a flowchart of a pixel driving method provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Pixel circuit;

[0038] 110. Pixel driving module; 120. Light-emitting module; 130. Light-emitting control module; 131. Switching unit; 132. Light-emitting triggering unit; 133. Light-off triggering unit; 134. Energy storage unit;

[0039] T1, first transistor; T2, second transistor; T3, third transistor; T4, fourth transistor; T5, fifth transistor; T6, sixth transistor; T7, seventh transistor; C1, first capacitor; C2, second capacitor; A, intermediate node; B, driving node; C, control node; OLED, light-emitting diode; Gate, scan line; Data, data line; EM, light-emitting control line; Gn+i, subsequent scan line; VSS, low-level terminal; VDD, power supply terminal. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0041] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0042] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0043] AMOLED (Active Matrix Organic Light Emitting Diode) is a new display technology that combines organic light-emitting diodes (OLEDs) and active matrix technology. AMOLED displays are characterized by their self-emissive nature, meaning they do not require a backlight and can display more vivid colors and deeper blacks. Because each pixel can emit light independently, AMOLED screens offer higher contrast and lower power consumption.

[0044] The basic circuit of OLED pixels, such as Figure 1As shown, this basic circuit uses a 3T1C architecture. The scan signal output from the scan line Gate turns on the first transistor T1, and the data signal output from the data line Data is input to the intermediate node A. The voltage at the intermediate node A then controls the current of the second transistor T2 (the driving transistor), allowing current to flow through T2. The first capacitor C1 stores the voltage at the intermediate node A, maintaining a high voltage at T2 to control it. The third transistor T3 is connected in series between the second transistor T2 and the OLED, directly controlling whether it emits light. The gate of the third transistor T3 is the light-emitting control line EM, and its output light-emitting control signal controls the duty cycle of the current frame's light emission, resulting in more precise grayscale control, especially at low grayscale levels. The display panel architecture under this pixel circuit design is as follows: Figure 2 As shown.

[0045] like Figure 3 The diagram shows the pixel control waveform of a related technology. When the scan signal output by the scan line of the nth row of pixels is high, the first transistor T1 is turned on, the data signal charges the intermediate node A, and controls the on state of the second transistor T2. However, the third transistor T3 is controlled by the light emission control line EM. Therefore, when the light emission control signal output by the light emission control line EM is low, the OLED still does not emit light. Only when the light emission control signal output by the light emission control line EM is high can the OLED emit light, thus controlling the light emission duty cycle of the OLED. Figure 3 The waveform of the light emission control signal differs significantly from that of the scanning signal. It requires a wider width and needs to be adjusted in real-time according to the duty cycle requirements. Therefore, the light emission driver circuit (EOA) and its control method differ significantly from those of the scanning driver circuit (GOA). Figure 4 The diagram shown is a relatively mature and stable GOA circuit architecture. However, it requires the use of an independent and complex light-emitting driving circuit design. This not only increases the complexity of the circuit design and the difficulty of control, but also occupies layout space and is not conducive to realizing the narrow bezel design of the display panel.

[0046] Therefore, in order to improve the compatibility between the light emission control signal and the scanning signal in the pixel circuit and simplify the design of the peripheral driving circuit, this application provides a pixel circuit, specifically including the following embodiments:

[0047] Figure 5 The diagram shown is a schematic representation of a pixel circuit 100 provided in an embodiment of this application; as shown Figure 5 As shown, the pixel circuit 100 includes a pixel driving module 110, which is connected to the scan line Gate, the data line Data, and the driving node B, and is configured to output a corresponding driving current to the driving node B in response to the scan signal on the scan line Gate and the data signal on the data line Data.

[0048] It should be noted that, as Figure 6 As shown, this embodiment divides the display cycle of a frame into a scan trigger phase (t1-t2), an emission phase (t2-t3), and an off phase (t3-t4). The emission module 120 in the pixel circuit 100 emits light only during the emission phase and does not emit light during the scan trigger and off phases. In this embodiment, the pixel driving module 110 acts as a signal conversion unit. During the scan trigger phase, it responds to the effective level of the scan signal on the scan line Gate, receives the data signal on the data line Data, and converts the data signal into a corresponding driving current, which is then input to the driving node B. The magnitude of this driving current precisely corresponds to the desired display grayscale. Through the storage mechanism of the pixel driving module 110, the driving node B can maintain a stable output of the driving current during both the emission and off phases. Therefore, the pixel driving module 110 ensures the accuracy and stability of the display brightness, providing a reliable current reference for the subsequent emission module 120.

[0049] In this embodiment, the pixel circuit 100 further includes a light-emitting module 120, configured to emit light of a corresponding brightness in response to a driving current. Specifically, the light-emitting module 120 in this embodiment is a current-driven light-emitting device, such as an OLED (Organic Light Emitting Diode), whose luminous brightness is proportional to the driving current flowing through it. When the driving current output by the driving node B flows through the light-emitting module 120, the light-emitting module 120 emits light of a corresponding brightness. Conversely, when the driving current output by the driving node B does not flow through the light-emitting module 120 or the driving node B has no driving current output, the light-emitting module 120 does not emit light.

[0050] In this embodiment, the pixel circuit 100 further includes an emissive control module 130, which is connected to the emissive control line EM and the driving node B respectively, and is configured to: control the driving current on the driving node B to flow to the low-level terminal VSS during the scan triggering phase; control the driving current on the driving node B to flow to the emissive module 120 during the emissive phase; and control the driving current on the driving node B to flow to the low-level terminal VSS again in response to the emissive control signal output by the emissive control line EM during the extinguishing phase.

[0051] It should be noted that the light emission control module 130 is configured to perform different functions in three different stages, specifically:

[0052] (1) During the scanning triggering phase (t1-t2 period): control the driving current on the driving node B to flow to the low level VSS so that the driving current cannot flow through the light-emitting module 120 and the light-emitting module 120 does not emit light.

[0053] (2) During the light-emitting stage (t2-t3 period): control the driving current on the driving node B to flow to the light-emitting module 120, so that the driving current flows through the light-emitting module 120 and drives the light-emitting module 120 to emit light.

[0054] (3) During the extinguishing phase (t3-t4 period): In response to the light emission control signal output by the light emission control line EM, the driving current on the driving node B is controlled to flow to the low level VSS again, so that the driving current stops flowing through the light emission module 120 and the light emission module 120 is extinguished.

[0055] In this embodiment, the waveform of the light emission control signal is the same as that of the scanning signal, both being narrow pulse signals, and there is a preset phase difference between them. By adjusting this phase difference, the light emission duty cycle of the light emission module 120 can be precisely controlled. Therefore, through the setting of the light emission control module 130, the external light emission control signal can adopt a narrow pulse signal with the same waveform as the scanning signal. This allows the EOA circuit driving the light emission control signal to adopt the same circuit architecture as the GOA circuit driving the scanning signal, thereby simplifying the design of the peripheral driving circuit, saving layout space, facilitating the realization of a narrow bezel, and absorbing the mature reliability experience of GOA.

[0056] In summary, this application utilizes the pixel driving module 110 to generate a driving current to the driving node B in response to the scanning signal and data signal, providing a stable and controllable current source for the light-emitting module 120. The light-emitting control module 130 guides the driving current to the low-level terminal VSS during the scanning trigger phase, to the light-emitting module 120 during the light-emitting phase, and again to the low-level terminal VSS in response to the light-emitting control signal during the extinguishing phase. This achieves precise timing control of the light-emitting module 120's light-emitting and extinguishing states, ensuring normal display functionality. In particular, by configuring the waveform of the light-emitting control signal to be identical to that of the scanning signal, with a preset phase difference between them, the light-emitting driving circuit driving the light-emitting control signal can adopt the same circuit architecture as the scanning driving circuit driving the scanning signal, sharing the clock signal and noise reduction circuit. This greatly simplifies the design of the peripheral driving circuit, significantly saves layout space in the non-display area, and provides key technical support for realizing a narrow-bezel display panel. Simultaneously, adjusting the phase difference allows for precise control of the light-emitting duty cycle, which is particularly beneficial for accurate performance in low grayscale displays, improving overall display quality.

[0057] Therefore, based on the above-described structural design of the pixel circuit 100, this application has the following beneficial effects:

[0058] (1) Great simplification of EOA circuit design: Since the external light emission control signal in this application can use a narrow pulse signal with the same waveform as the scanning signal, the light emission duty cycle can be precisely controlled by adjusting only the phase difference between the two. Therefore, the EOA circuit that drives the light emission control signal can directly adopt the same circuit architecture as the GOA, without the need to design a complex circuit structure and timing control scheme for the EOA separately, which greatly simplifies the design of the peripheral driving circuit.

[0059] (2) Resource sharing and layout optimization of the driving circuit: Since the EOA can adopt the same circuit architecture as the GOA, the EOA can share the noise reduction circuit, the same set of noise reduction power signals (LC1 / LC2), and the same set of clock signals (CK) with the GOA. This resource sharing scheme avoids setting up a complex circuit structure and additional signal traces for the EOA separately, significantly reducing the layout area of ​​the non-display area, and providing key technical support for realizing the narrow bezel design of the display panel.

[0060] (3) Effective improvement of product reliability: After years of development, GOA technology has formed mature design experience, problem analysis experience and repair experience. After EOA adopts the same circuit architecture as GOA, it can directly absorb and learn from these mature experiences, thereby effectively improving the reliability of EOA, reducing the product defect rate and improving the overall yield of display panels.

[0061] Figure 7 The diagram shown is a structural schematic of another pixel circuit 100 provided in an embodiment of this application; as shown Figure 7 As shown, the light emission control module 130 includes a switching unit 131, which is connected to the control node C, the driving node B and the low-level terminal VSS respectively, and is configured to control the on / off state between the driving node B and the low-level terminal VSS according to the potential on the control node C.

[0062] It should be noted that the switching unit 131, acting as a controllable path between the driving node B and the low-level terminal VSS, has its on / off state controlled by the potential of the control node C. When the control node C is at an effective potential (e.g., high level), the switching unit 131 is turned on, connecting the driving node B to the low-level terminal VSS. The driving node B is pulled down to a low level, causing the driving current to flow to the low-level terminal VSS, and the light-emitting module 120 does not emit light. When the control node C is at an ineffective potential (e.g., low level), the switching unit 131 is turned off, disconnecting the driving node B from the low-level terminal VSS, allowing the driving current to flow to the light-emitting module 120, which then emits light. Therefore, by setting the switching unit 131, the controllable pull-down of the driving node B's potential is achieved, thereby determining the final direction of the driving current.

[0063] like Figure 7As shown, the light-emitting control module 130 of this embodiment also includes a light-emitting trigger unit 132, which is connected to the control node C and configured to pull the control node C down to a low level during the light-emitting phase to disconnect the switch unit 131. Specifically, the light-emitting trigger unit 132 is the trigger source for controlling the switch unit 131 to turn off. The light-emitting trigger unit 132 responds to the effective potential of the current stage's scan signal (or the subsequent stage's scan signal) by pulling the control node C down to a low level, thus turning off the switch unit 131. After the switch unit 131 is turned off, the driving current begins to flow to the light-emitting module 120, thereby achieving light emission. Therefore, by setting the light-emitting trigger unit 132, a precise timing correlation between the scan signal and the turn-off of the switch unit 131 is achieved, ensuring that the switch unit 131 can be turned off in a timely manner after data writing is completed, allowing the driving current to flow to the light-emitting module 120.

[0064] like Figure 7 As shown, the light emission control module 130 of this embodiment also includes an extinguishing trigger unit 133, which is connected to the light emission control line EM and the control node C respectively, and is configured to: in response to the light emission control signal during the extinguishing phase, transmit the light emission control signal to the control node C to turn on the switching unit 131.

[0065] In other words, the extinguishing trigger unit 133 is the trigger source that controls the switching unit 131 to conduct. Specifically, during the extinguishing phase, the extinguishing trigger unit 133 responds to the effective potential of the light-emitting control signal on the light-emitting control line EM, transmitting the light-emitting control signal to the control node C, charging the control node C to a high level, thereby turning on the switching unit 131. After the switching unit 131 is turned on, the driving node B is pulled down to a low level, and the driving current stops flowing to the light-emitting module 120, thus achieving extinguishing.

[0066] like Figure 7 As shown, the light-emitting control module 130 of this embodiment also includes an energy storage unit 134, which is connected to the control node C and is used to store the potential of the control node C. Specifically, when the light-emitting trigger unit 132 pulls the control node C down to a low level, the energy storage unit 134 stores the low level, so that the control node C can still maintain a low level after the light-emitting trigger unit 132 is turned off, ensuring that the switch unit 131 is continuously turned off; when the extinguishing trigger unit 133 charges the control node C to a high level, the energy storage unit 134 stores the high level, so that the control node C can still maintain a high level after the extinguishing trigger unit 133 is turned off, ensuring that the switch unit 131 is continuously turned on.

[0067] Therefore, by setting up the energy storage unit 134, the potential of the control node C is stably maintained, ensuring that the switching unit 131 can be continuously turned off during the light-emitting stage and continuously turned on during the extinguishing stage, thus avoiding unstable light emission or malfunction caused by potential fluctuations.

[0068] In this embodiment, the switching unit 131, the light-emitting triggering unit 132, the extinguishing triggering unit 133, and the energy storage unit 134 work together to realize the overall function of the light-emitting control module 130. This is combined with... Figure 6 The timing diagram shown illustrates the working principle of the four components as follows:

[0069] (1) Scan triggering phase (t1-t2 period): The scan signal is at an effective potential (e.g., high level), and the light emission control signal is at an ineffective potential (e.g., low level). Specifically:

[0070] ①Light-emitting trigger unit 132: In a non-working state, it does not output a pull-down potential to the control node C.

[0071] ② Extinguishing trigger unit 133: In a non-working state, it does not output charging potential to control node C.

[0072] ③ Energy storage unit 134: Stores the current potential of control node C (from the state at the end of the previous frame, usually high level).

[0073] ④ Switching unit 131: Since the control node C is at a high level (effective potential), the switching unit 131 is turned on, pulling the drive node B down to a low level.

[0074] ⑤ Drive current flow direction: When the drive node B is at a low level, the drive current cannot flow through the light-emitting module 120, but flows to the low-level terminal VSS.

[0075] ⑥ Illumination status: Illumination module 120 does not emit light.

[0076] (2) Light emission stage (t2-t3 period): The scanning signal is at an invalid potential (low level), and the light emission control signal is still at an invalid potential (low level). Specifically:

[0077] ①Light-emitting trigger unit 132: Starts working and pulls control node C down to low level.

[0078] ② Energy storage unit 134: Stores the low level of control node C, ensuring that control node C remains at a low level after the light-emitting trigger unit 132 is turned off.

[0079] ③ Extinguishing trigger unit 133: In a non-working state.

[0080] ④ Switching unit 131: As the control node C becomes low level (invalid potential), the switching unit 131 is turned off, disconnecting the connection between the driving node B and the low level terminal VSS, so that the driving node B is connected to the light-emitting module 120.

[0081] ⑤ Drive current flow direction: The drive current starts to flow through the light-emitting module 120.

[0082] ⑥ Illumination status: Illumination module 120 starts emitting light and continues to emit light.

[0083] (3) Extinction phase (t3-t4 period): The light emission control signal is at an effective potential (high level), and the scanning signal is at an ineffective potential (low level). Specifically:

[0084] ① Extinguishing trigger unit 133: Responds to the effective potential of the light emission control signal, starts working, and transmits the high level of the light emission control signal to the control node C, so that the control node C is charged to the high level.

[0085] ② Energy storage unit 134: Stores the high level of control node C, ensuring that control node C remains at a high level after the trigger unit 133 is turned off.

[0086] ③Light-emitting trigger unit 132: In a non-working state.

[0087] ④ Switching unit 131: As the control node C becomes high (effective potential), the switching unit 131 is turned on again, pulling the drive node B down to low level again.

[0088] ⑤ Drive current flow direction: After the drive node B is pulled low, the drive current stops flowing through the light-emitting module 120 and flows back to the low-level terminal VSS.

[0089] ⑥ Illumination status: Illumination module 120 is off.

[0090] (4) Energy storage and retention function

[0091] During the light-emitting stage: the light-emitting triggering unit 132 pulls the control node C down to a low level and then turns it off. However, since the energy storage unit 134 has stored a low level, the control node C continues to remain at a low level, the switching unit 131 remains off, and the light-emitting module 120 continues to emit light.

[0092] During the shutdown phase: After the shutdown trigger unit 133 charges the control node C to a high level, it shuts it off. However, since the energy storage unit 134 has stored a high level, the control node C continues to maintain a high level, the switch unit 131 remains on, and the light-emitting module 120 continues to be off.

[0093] Therefore, the presence of the energy storage unit 134 enables the potential of the control node C to remain after the light-emitting trigger unit 132 or the extinguishing trigger unit 133 is turned off, thereby achieving stable maintenance of the light-emitting state and avoiding light flickering caused by the potential change at the moment of signal switching.

[0094] In summary, in this embodiment, the switching unit 131 responds to the potential of the control node C, controlling the switching between the driving node B and the low-level terminal VSS; the light-emitting triggering unit 132 responds to the scanning signal, pulling the control node C down to a low level, turning off the switching unit 131, and allowing the driving current to flow to the light-emitting module 120; the extinguishing triggering unit 133 responds to the light-emitting control signal, charging the control node C to a high level, turning on the switching unit 131, and allowing the driving current to flow to the low-level terminal VSS; the energy storage unit 134 stores the potential of the control node C, ensuring the stable maintenance of the state of the switching unit 131. Therefore, through the coordinated operation of the switching unit 131, the light-emitting triggering unit 132, the extinguishing triggering unit 133, and the energy storage unit 134, this embodiment enables the external light-emitting control signal to use a narrow pulse signal with the same waveform as the scanning signal, and only the phase difference between the two needs to be adjusted to accurately control the light-emitting duty cycle.

[0095] Figure 8 The diagram shown is a circuit diagram of the first pixel circuit 100 provided in an embodiment of this application; as shown Figure 8 As shown, the light-emitting trigger unit 132 includes: a first transistor T1, the control terminal of the first transistor T1 being connected to the subsequent scan line Gn+i, the first terminal of the first transistor T1 being connected to the control node C, and the second terminal of the first transistor T1 being connected to the low-level terminal VSS. The subsequent scan line Gn+i is the scan line corresponding to the i-th row after the current scan line, and the scan signal on the subsequent scan line Gn+i does not overlap with the scan signal on the current scan line in timing, where i ≥ 1.

[0096] The switching unit 131 in this embodiment includes a second transistor T2. The control terminal of the second transistor T2 is connected to the control node C, the first terminal of the second transistor T2 is connected to the driving node B, and the second terminal of the second transistor T2 is connected to the low-level terminal VSS.

[0097] The extinguishing trigger unit 133 in this embodiment includes: a fourth transistor T4, the control terminal of the fourth transistor T4 is connected to the light emission control line EM, the first terminal of the fourth transistor T4 is connected to the control terminal of the fourth transistor T4, and the second terminal of the fourth transistor T4 is connected to the control node C.

[0098] The energy storage unit 134 in this embodiment includes a second capacitor C2. The first end of the second capacitor C2 is connected to the control node C, and the second end of the second capacitor C2 is connected to the low-level terminal VSS.

[0099] In this embodiment, the pixel driving module 110 includes: a fifth transistor T5, a sixth transistor T6, and a first capacitor C1; the control terminal of the fifth transistor T5 is connected to the scan line of the current stage, the first terminal of the fifth transistor T5 is connected to the data line Data, and the second terminal of the fifth transistor T5 is connected to the intermediate node A; the control terminal of the sixth transistor T6 is connected to the intermediate node A, the first terminal of the sixth transistor T6 is connected to the power supply terminal VDD, and the second terminal of the sixth transistor T6 is connected to the driving node B; the first terminal of the first capacitor C1 is connected to the intermediate node A, and the second terminal of the first capacitor C1 is connected to the driving node B.

[0100] Here, taking i=3 as an example, combined with Figure 9 The timing sequence shown below explains the working principle of the pixel circuit 100 in this embodiment:

[0101] (1) Scan triggering stage (t1-t2 period): The current stage scan line outputs a high level signal, the subsequent stage scan line Gn+i outputs a low level signal, and the light emission control line EM outputs a low level signal.

[0102] The fifth transistor T5 is turned on by the high-level signal output from the scan line, and the data voltage Vdata on the data line Data is written to intermediate node A through the fifth transistor T5. The gate voltage of the sixth transistor T6 is set to Vdata, and the sixth transistor T6 begins to generate drive current. The first capacitor C1 stores the voltage of intermediate node A, ensuring that the gate voltage of the sixth transistor T6 remains after the scan signal ends.

[0103] Additionally, the control terminal of the first transistor T1 receives a low-level signal from the subsequent scan line Gn+i, and the first transistor T1 is in the off state, not outputting a pull-down potential to the control node C. The control terminal of the second transistor T2 is connected to the control node C. Since the control node C was stored as high-level by the second capacitor C2 at the end of the previous frame, the second transistor T2 is in the on state, pulling the drive node B down to the low-level terminal VSS. The control terminal of the fourth transistor T4 receives a low-level signal from the light emission control line EM and is in the off state, not charging the control node C. The seventh transistor T7 is also turned off due to the low level of EM, and does not short-circuit the intermediate node A and the drive node B.

[0104] At this time, the driving current generated by the sixth transistor T6 flows to the driving node B. However, because the second transistor T2 is turned on, the driving current cannot flow through the light-emitting diode OLED, but instead flows through the second transistor T2 to the low-level terminal VSS. Therefore, the light-emitting diode OLED does not emit light.

[0105] (2) The light emission triggering period (t2-t21 period) in the light emission stage: the current stage scan line outputs a low level signal, the subsequent stage scan line Gn+i outputs a high level signal, and the light emission control line EM outputs a low level signal.

[0106] The fifth transistor T5 is turned off under the influence of the low-level signal of the scan line, and the intermediate node A no longer receives new data; its potential is maintained by the first capacitor C1. The sixth transistor T6 continues to generate drive current.

[0107] The first transistor T1 is turned on by the high-level signal of the subsequent scan line Gn+i, pulling the control node C down to the low-level potential VSS. The control terminal of the second transistor T2 is turned off because the control node C becomes low, and it no longer pulls down the drive node B. The fourth transistor T4 is still turned off because EM is low, and the seventh transistor T7 is also turned off because EM is low.

[0108] At this point, driver node B is no longer pulled down, and the driving current generated by the sixth transistor T6 begins to charge driver node B, causing its potential to gradually rise. As the potential of driver node B rises, the driving current begins to flow through the light-emitting diode (OLED), and the OLED begins to emit light.

[0109] Simultaneously, the first capacitor C1 is connected between intermediate node A and driving node B. When the potential of driving node B rises, since the voltage across the first capacitor C1 cannot change abruptly, the potential of intermediate node A is synchronously coupled and pulled up. Therefore, the potential difference between intermediate node A and driving node B always remains Vdata - VSS, that is, the gate-source voltage Vgs of the sixth transistor T6 always remains Vdata - VSS, unaffected by the potential change of driving node B.

[0110] (3) The light emission maintenance period (t21-t3 period) in the light emission stage: the current stage scan line outputs a low level signal, the subsequent stage scan line Gn+i outputs a low level signal, and the light emission control line EM outputs a low level signal.

[0111] The fifth transistor T5 remains off. The first transistor T1 is turned off due to the low level signal of the subsequent scan line Gn+i, and no longer pulls down the control node C. Due to the storage effect of the second capacitor C2, the control node C remains low, and the second transistor T2 remains off. The fourth transistor T4 and the seventh transistor T7 remain off due to the low level of EM.

[0112] At this time, control node C remains at a low level, and the second transistor T2 remains off. Driver node B remains at a high level, and the driving current continues to flow through the light-emitting diode (OLED), causing the OLED to continuously emit light. The coupling effect continues: the potential difference between intermediate node A and driver node B remains Vdata - VSS, and the Vgs of the sixth transistor T6 remains constant.

[0113] (4) Extinguishing stage (t3-t4 period): The current stage scan line outputs a low level signal, the subsequent stage scan line Gn+i outputs a low level signal, and the light emission control line EM outputs a high level signal.

[0114] Both the fifth transistor T5 and the first transistor T1 remain off. The fourth transistor T4 turns on under the influence of the high-level signal on the light-emitting control line EM. Due to the diode connection, the high level of the light-emitting control line EM is transmitted to the control node C, charging the control node C to a high level. The control terminal of the second transistor T2 turns on because the control node C becomes high, pulling the drive node B down to the low level VSS again. The seventh transistor T7 also turns on due to the high level of EM, shorting the intermediate node A and the drive node B, pulling the intermediate node A down to a low level as well.

[0115] At this point, control node C goes high, and the second capacitor C2 stores this high potential. Driver node B is pulled low, the driving current stops flowing through the LED (OLED) and instead flows through the second transistor T2 to the low-level terminal VSS, turning off the LED and ending the current frame's illumination. Intermediate node A is pulled low.

[0116] (5) Next frame preparation: When the scan trigger period of the next frame arrives, the current scan line outputs a high-level signal again, repeating the above process. The high level of control node C stored in the second capacitor C2 will continue until the light emission trigger period of the next frame, ensuring that the second transistor T2 remains on during the scan trigger period of the next frame, pulling down the drive node B.

[0117] Therefore, it can be seen that this embodiment mainly achieves the following functions through the coordinated operation of the first transistor T1, the second transistor T2, the fourth transistor T4, and the second capacitor C2 in the light-emitting control module 130:

[0118] (1) Light emission triggering: The high level of the subsequent scan line Gn+i turns on the first transistor T1, pulls down the control node C, turns off the second transistor T2, drives the node B potential to rise, and light emission begins.

[0119] (2) Light emission maintenance: The second capacitor C2 stores the low potential of the control node C, so that the second transistor T2 is continuously turned off, and the light emission continues.

[0120] (3) Light emission is extinguished: The high level of the light emission control line EM turns on the fourth transistor T4, which charges the control node C to a high level, turns on the second transistor T2, and pulls down the drive node B, thus extinguishing the light emission.

[0121] (4) Stable driving: The coupling effect of the first capacitor C1 ensures that the gate-source voltage Vgs of the sixth transistor T6 remains Vdata - VSS during the light-emitting stage, and is not affected by the potential change of the driving node B, thus realizing precise control of the driving current.

[0122] (5) Waveform conversion: The external light emission control signal EM adopts the same narrow pulse waveform as the scanning signal. Through the above mechanism, an equivalent wide pulse control effect is generated inside the pixel, so that the EOA circuit driving the EM signal can adopt the same circuit architecture as the GOA circuit driving the scanning signal, thereby greatly simplifying the peripheral driving circuit and significantly saving layout space.

[0123] Figure 10 The diagram shown is a circuit diagram of the second pixel circuit 100 provided in an embodiment of this application; Figure 10 The pixel circuit 100 shown is Figure 8 The difference in the pixel circuit 100 shown is that the structures of the light-emitting trigger unit 132 and the switching unit 131 are different; in addition, the structures of the other pixel driving module 110, the extinguishing trigger unit 133, the energy storage unit 134 and the light-emitting module 120 are the same as those in Embodiment 1, and will not be described again here.

[0124] Specifically, such as Figure 10 As shown, the light-emitting triggering unit 132 includes: a first transistor T1, the control terminal of the first transistor T1 is connected to the current level scan line, the first terminal of the first transistor T1 is connected to the control node C, and the second terminal of the first transistor T1 is connected to the low-level terminal VSS.

[0125] The switching unit 131 in this embodiment includes a second transistor T2 and a third transistor T3. The control terminal of the second transistor T2 is connected to the control node C, the first terminal of the second transistor T2 is connected to the driving node B, and the second terminal of the second transistor T2 is connected to the low-level terminal VSS. The control terminal of the third transistor T3 is connected to the current stage scan line, the first terminal of the third transistor T3 is connected to the driving node B, and the second terminal of the third transistor T3 is connected to the low-level terminal VSS.

[0126] The operating timing of the pixel circuit 100 in this embodiment is as follows: Figure 11 As shown, in combination here Figure 11 The working principle of the light-emitting triggering unit 132 and the switching unit 131 in this embodiment is explained as follows:

[0127] (1) Scan triggering stage (t1-t2 period): The current scan line outputs a high-level signal, and the light emission control line EM outputs a low-level signal.

[0128] At this time, the first transistor T1 is turned on by the high-level signal output from the scan line, pulling down the control node C to the low-level terminal VSS. The control terminal of the second transistor T2 is connected to the control node C. Since the control node C is pulled down to the low level by the first transistor T1, the second transistor T2 is in the off state and no longer pulls down the drive node B. The third transistor T3 is turned on by the high-level signal output from the scan line, directly pulling down the drive node B to the low-level terminal VSS.

[0129] The fifth transistor T5 is turned on under the high-level signal of the scan line, and the data voltage Vdata is written to the intermediate node A. The sixth transistor T6 generates a drive current that flows to the drive node B. Because the third transistor T3 is turned on, the drive node B is directly pulled down to a low level. The drive current cannot flow through the light-emitting diode OLED, but instead flows through the third transistor T3 to the low-level terminal VSS, causing the light-emitting diode OLED to not emit light.

[0130] (2) The light emission triggering period (t2 time): The current stage scan line outputs a low level signal, and the light emission control line EM outputs a low level signal.

[0131] The first transistor T1 is turned off under the influence of the low-level signal of the scan line Gn, and no longer pulls down the control node C; the control terminal of the second transistor T2 is connected to the control node C. Since the control node C remains at a low level (stored by the second capacitor C2), the second transistor T2 remains off. The third transistor T3 is turned off under the influence of the low-level signal of the scan line, and no longer pulls down the drive node B. The drive current generated by the sixth transistor T6 begins to charge the drive node B, and the potential of the drive node B gradually rises. When the potential of the drive node B rises, due to the coupling effect of the first capacitor C1, the potential of the intermediate node A rises synchronously, so that the gate-source voltage Vgs of the sixth transistor T6 is always maintained at Vdata - VSS.

[0132] As the potential of the driving node B rises, the driving current begins to flow through the light-emitting diode (OLED), and the OLED begins to emit light.

[0133] (3) Light emission maintenance period (t2-t3 period): The current stage scan line outputs a low level signal, and the light emission control line EM outputs a low level signal.

[0134] At this time, the first transistor T1, the second transistor T2 and the third transistor T3 remain off, the driving node B remains at a high level, the driving current continues to flow through the light-emitting diode OLED, and the light-emitting diode OLED continues to emit light.

[0135] (4) Extinguishing phase (t3-t4 period): The current scanning line outputs a low-level signal, and the luminous control line EM outputs a high-level signal.

[0136] At this time, the first transistor T1 remains off, and the fourth transistor T4 is turned on under the action of the high-level signal of the light-emitting control line EM, charging the control node C to a high level. The second transistor T2 is turned on under the action of the high level of the control node C, pulling the drive node B down to the low level VSS. The third transistor T3 remains off (the scan line Gn is at a low level).

[0137] When the seventh transistor T7 is high, it conducts, shorting the intermediate node A and the driving node B, pulling the intermediate node A down to a low level. After the driving node B is pulled down to a low level, the driving current stops flowing through the light-emitting diode OLED and instead flows through the second transistor T2 to the low-level terminal VSS, turning off the light-emitting diode OLED and ending the emission of the current frame.

[0138] The pixel circuit in this embodiment has the following specific effects:

[0139] (1) In this embodiment, the pull-down action during the scan triggering stage is completed by the third transistor directly responding to the high-level signal of the current scan line, without relying on the potential stored in the previous frame, making the control logic more direct and reliable.

[0140] (2) This embodiment does not require the use of subsequent scanning signals, which reduces the design complexity of signal routing and timing matching, and is especially suitable for scenarios with heavy scan line load or strict timing requirements.

[0141] (3) In this embodiment, the same narrow pulse control with the same waveform of external light emission control signal and scanning signal is also realized, so that the EOA circuit driving the EM signal can adopt the same circuit architecture as the GOA circuit driving the scanning signal, share the clock signal and noise reduction circuit, and realize the simplification of peripheral driving circuit and the saving of layout space.

[0142] In one embodiment, this application provides a pixel driving method, specifically including the following embodiments:

[0143] Figure 12 The diagram shown is a flowchart of a pixel driving method provided in an embodiment of this application; as follows: Figure 12 As shown, this pixel driving method is applied to the pixel circuit shown in the above embodiment, and specifically includes the following steps:

[0144] Step S100: During the scan triggering phase, the driving current on the driving node is guided to a low level by the light emission control module so that the light emission module does not emit light.

[0145] Step S200: In the light emission stage after the scanning triggering stage ends, the light emission control module guides the driving current on the driving node to the light emission module so that the driving current drives the light emission module to emit light.

[0146] Step S300: In the extinguishing phase after the light emission phase ends, the light emission control module responds to the light emission control signal on the light emission control line and guides the drive current on the drive node back to the low level to extinguish the light emission module.

[0147] In one embodiment, the light emission control module includes a switching unit, a light emission triggering unit, an extinguishing triggering unit, and an energy storage unit; guiding the drive current on the drive node to the low-level end through the light emission control module includes: during the scan triggering phase, the switching unit responds to the effective potential of the control node to open the path between the drive node and the low-level end, so that the drive current flows to the low-level end.

[0148] In one embodiment, guiding the drive current on the drive node to the light-emitting module through the light-emitting control module includes: during the light-emitting phase, pulling the control node down to a low level through the light-emitting trigger unit to disconnect the switching unit, thereby disconnecting the path between the drive node and the low-level terminal, so that the drive current flows to the light-emitting module.

[0149] In one embodiment, the light emission control module, in response to the light emission control signal, guides the drive current on the drive node back to the low-level end, including: during the extinguishing phase, the extinguishing trigger unit, in response to the light emission control signal, transmits the light emission control signal to the control node, turns on the switching unit, and reconnects the path between the drive node and the low-level end, so that the drive current flows to the low-level end again.

[0150] In one embodiment, the potential of the control node is stored in an energy storage unit so that the control node maintains the current potential after the light-emitting trigger unit or the extinguishing trigger unit is turned off.

[0151] It should be noted that the working principle of the pixel driving method provided in this embodiment is the same as that of the pixel circuit in the above embodiment, and will not be repeated here.

[0152] In one embodiment, this embodiment provides a display panel, which includes multiple scan lines, multiple data lines, and multiple light emission control lines. The display panel also includes an array of pixel circuits, which are electrically connected to the scan lines, data lines, and light emission control lines respectively.

[0153] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0154] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0155] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A pixel circuit, characterized in that, The pixel circuit includes: The pixel driving module, which is connected to the scan line, the data line and the driving node respectively, is configured to output a corresponding driving current to the driving node in response to the scan signal on the scan line and the data signal on the data line. The light-emitting module is configured to emit light of a corresponding brightness in response to the driving current; A light-emitting control module, connected to both the light-emitting control line and the driving node, is configured to: control the driving current on the driving node to flow to a low level during the scan triggering phase; control the driving current on the driving node to flow to the light-emitting module during the light-emitting phase; and control the driving current on the driving node to flow to a low level again in response to the light-emitting control signal output by the light-emitting control line during the extinguishing phase. The waveform of the light-emitting control signal is the same as the waveform of the scan signal, and a preset phase difference exists between the light-emitting control signal and the scan signal. The light emission control module includes: A switching unit, connected to a control node, the drive node, and a low-level terminal respectively, is configured to control the on / off connection between the drive node and the low-level terminal based on the potential on the control node. The light-emitting triggering unit, connected to the control node, is configured to: pull the control node down to a low level during the light-emitting phase to disconnect the switching unit; An extinguishing trigger unit, connected to the light emission control line and the control node respectively, is configured to: in response to the light emission control signal during the extinguishing phase, transmit the light emission control signal to the control node to turn on the switching unit; An energy storage unit, connected to the control node, is configured to store the potential of the control node.

2. The pixel circuit according to claim 1, characterized in that, The light-emitting triggering unit includes: a first transistor, the control terminal of the first transistor is connected to the subsequent scan line, the first terminal of the first transistor is connected to the control node, and the second terminal of the first transistor is connected to the low-level terminal; wherein, the subsequent scan line is the scan line corresponding to the i-th row after the current scan line, and the scan signal on the subsequent scan line and the scan signal on the current scan line do not overlap in timing, i≥1; The switching unit includes a second transistor, the control terminal of the second transistor is connected to the control node, the first terminal of the second transistor is connected to the driving node, and the second terminal of the second transistor is connected to the low-level terminal.

3. The pixel circuit according to claim 1, characterized in that, The light-emitting triggering unit includes: a first transistor, the control terminal of the first transistor is connected to the current scan line, the first terminal of the first transistor is connected to the control node, and the second terminal of the first transistor is connected to the low-level terminal; The switching unit includes: The second transistor has a control terminal connected to the control node, a first terminal connected to the drive node, and a second terminal connected to the low-level terminal. The third transistor has its control terminal connected to the current stage scan line, its first terminal connected to the driving node, and its second terminal connected to the low-level terminal.

4. The pixel circuit according to any one of claims 1-3, characterized in that, The extinguishing trigger unit includes: The fourth transistor has its control terminal connected to the light-emitting control line, its first terminal connected to its control terminal, and its second terminal connected to the control node.

5. The pixel circuit according to claim 4, characterized in that, The pixel driving module includes: a fifth transistor, a sixth transistor, and a first capacitor; the control terminal of the fifth transistor is connected to the scan line of the current stage, the first terminal of the fifth transistor is connected to the data line, and the second terminal of the fifth transistor is connected to the intermediate node; the control terminal of the sixth transistor is connected to the intermediate node, the first terminal of the sixth transistor is connected to the power supply terminal, and the second terminal of the sixth transistor is connected to the driving node; the first terminal of the first capacitor is connected to the intermediate node, and the second terminal of the first capacitor is connected to the driving node. The extinguishing trigger unit further includes: The seventh transistor has its control terminal connected to the light-emitting control line, its first terminal connected to the intermediate node, and its second terminal connected to the driving node.

6. A pixel driving method, characterized in that, The pixel driving method, applied to the pixel circuit according to any one of claims 1-5, comprises: During the scan triggering phase, the light emission control module guides the drive current on the drive node to a low level so that the light emission module does not emit light. In the light emission phase after the scanning triggering phase ends, the light emission control module guides the driving current on the driving node to the light emission module so that the driving current drives the light emission module to emit light. During the extinguishing phase after the light-emitting phase ends, the light-emitting control module responds to the light-emitting control signal on the light-emitting control line by guiding the driving current on the driving node back to the low-level end, so that the light-emitting module is extinguished.

7. The pixel driving method according to claim 6, characterized in that, The light-emitting control module guides the driving current on the driving node to a low level, including: During the scan triggering phase, the switching unit responds to the effective potential of the control node to open the path between the driving node and the low-level terminal, so that the driving current flows to the low-level terminal.

8. The pixel driving method according to claim 7, characterized in that, The light-emitting control module guides the drive current on the drive node to the light-emitting module, including: During the light-emitting stage, the control node is pulled down to a low level by the light-emitting trigger unit to disconnect the switching unit, thereby disconnecting the path between the driving node and the low-level terminal, so that the driving current flows to the light-emitting module. The light-emitting control module, in response to the light-emitting control signal, guides the drive current on the drive node back to the low-level terminal, including: During the extinguishing phase, the extinguishing trigger unit responds to the light emission control signal and transmits the light emission control signal to the control node, turning on the switching unit to reconnect the path between the driving node and the low-level terminal, so that the driving current flows to the low-level terminal again. The energy storage unit stores the potential of the control node so that the control node maintains the current potential after the light-emitting trigger unit or the extinguishing trigger unit is turned off.

9. A display panel, the display panel comprising multiple scan lines, multiple data lines, and multiple light-emitting control lines, characterized in that, The display panel also includes: The pixel circuit according to any one of claims 1-5 is arranged in an array, wherein the pixel circuit is electrically connected to the scan line, the data line and the light emission control line respectively.

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