Pixel driving circuit and display panel

Abstract

The present invention provides a pixel driving circuit and a display panel, including a data transistor connected to a data line, a driving transistor connected in series with a light-emitting element between a first power supply line and a second power supply line, and a boosting module with a boosting input signal applied to its input terminal. The source and gate of the driving transistor are electrically connected to the light-emitting element and the data transistor respectively, and the output terminal of the boosting module is electrically connected to the gate of the driving transistor. Among them, the boosting module in the present invention controls the gate of the driving transistor to rise from a first voltage in a first stage to a second voltage in a second stage after the first stage, thereby increasing the driving current flowing through the light-emitting element to improve the light-emitting brightness of the light-emitting element, and thus improving the brightness of the display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, particularly to the field of display panel manufacturing technologies, and specifically to pixel driving circuits and display panels. Background Art

[0002] Compared with liquid crystal displays, self-emissive displays have advantages such as a high color gamut, high contrast ratio, short response time, and bendability, and are recognized by the industry as having great development potential in the field of new-generation displays.

[0003] Currently, the light-emitting elements in self-emissive displays are all current-driven types, that is, the light-emitting brightness depends on the magnitude of the current flowing through the light-emitting elements. Among them, after the panel is produced, the light-emitting brightness of the light-emitting elements is generally adjusted by adjusting the magnitude of the data voltage, and during the light-emitting stage, the gate-source voltage of the driving transistor does not change, that is, the light-emitting brightness of the light-emitting elements cannot be changed. However, limited by the hardware of the data driving chip and considering the influence of compensation in aspects such as threshold voltage and picture uniformity, the gate-source voltage of the driving transistor during the light-emitting stage is small, so that the current flowing through the light-emitting elements is small, resulting in a low brightness of the light-emitting elements and the self-emissive displays formed thereby.

[0004] Therefore, the existing self-emissive displays have a low light-emitting brightness due to the limitation of the hardware of the data driving chip and urgently need improvement. Summary of the Invention

[0005] Embodiments of the present invention provide a pixel driving circuit and a display panel to solve the technical problem that the existing self-emissive displays have a low light-emitting brightness due to the limitation of the hardware of the data driving chip.

[0006] Embodiments of the present invention provide a pixel driving circuit, including:

[0007] A driving transistor, connected in series with a light-emitting element between a first power supply line and a second power supply line, and the source of the driving transistor is electrically connected to the light-emitting element;

[0008] A data transistor, the source of the data transistor is electrically connected to a data line, the drain of the data transistor is electrically connected to the gate of the driving transistor, and a data control signal is loaded on the gate of the data transistor;

[0009] A boosting module, the input end of the boosting module is used to load a boosting input signal, and the output end of the boosting module is electrically connected to the gate of the driving transistor;

[0010] Wherein, the boost module controls the gate of the driving transistor to rise from a first voltage in a first stage to a second voltage in a second stage, the second stage being after the first stage, and the driving transistor is used to generate a driving current according to the second voltage to drive the light-emitting element to emit light.

[0011] In one embodiment, the boost module includes:

[0012] A first capacitor, a first plate of the first capacitor is electrically connected to the gate of the driving transistor to serve as the output terminal of the boost module;

[0013] A first boost transistor, a drain of the first boost transistor is electrically connected to a second plate of the first capacitor, a source of the first boost transistor is electrically connected to the input terminal of the boost module, a gate of the first boost transistor is loaded with a first boost control signal, and the first boost transistor is turned on in both the first stage and the second stage;

[0014] Wherein, the boost input signal has a first boost input voltage in the first stage, and the boost input signal has a second boost input voltage in the second stage, and the second boost input voltage is greater than the first boost input voltage.

[0015] In one embodiment, the boost module further includes:

[0016] A second boost transistor, a drain of the second boost transistor is electrically connected to the source of the first boost transistor, a source of the second boost transistor is electrically connected to the input terminal of the boost module, a gate of the second boost transistor is loaded with a second boost control signal, and the second boost transistor is turned on in both the first stage and the second stage;

[0017] Wherein, the gate of the first boost transistor is electrically connected to the gate of the driving transistor.

[0018] In one embodiment, it further includes:

[0019] A second capacitor, a first plate of the second capacitor is electrically connected to the second plate of the first capacitor, and a second plate of the second capacitor is electrically connected to the source or drain of the driving transistor.

[0020] In one embodiment, the boost module further includes:

[0021] A third capacitor;

[0022] A boost switch, which is connected in series with the third capacitor between the gate of the driving transistor and the source of the driving transistor;

[0023] Wherein, in the first stage and the third stage before the first stage, the boost switch is turned on to control the gate of the driving transistor to rise from the third voltage in the third stage to the first voltage in the first stage.

[0024] In one embodiment, it further includes:

[0025] A reset transistor, the source of the reset transistor is electrically connected to a reset line, the drain of the reset transistor is electrically connected to the source of the driving transistor, and the gate of the reset transistor is loaded with a reset control signal.

[0026] The embodiment of the present invention provides a display panel, including a plurality of pixel driving circuits as described in any one of the above.

[0027] In one embodiment, it further includes:

[0028] A data generation chip, located on at least one side of the plurality of pixel driving circuits, and a plurality of data lines are electrically connected to the data generation chip to obtain data signals.

[0029] In one embodiment, for the pixel driving circuit far from the data generation chip relative to the pixel driving circuit close to the data generation chip, the absolute value of the voltage value of the corresponding data signal is larger.

[0030] In one embodiment, it further includes:

[0031] A signal generation chip, located on at least one side of the plurality of pixel driving circuits, and the input ends of the plurality of boost modules are electrically connected to the signal generation chip to obtain the boost input signal;

[0032] Wherein, the boost input signal has a first boost input voltage in the first stage, and the boost input signal has a second boost input voltage in the second stage, and the second boost input voltage is greater than the first boost input voltage;

[0033] Wherein, for the pixel driving circuit far from the data generation chip relative to the pixel driving circuit close to the data generation chip, the difference between the corresponding second boost input voltage and the corresponding first boost input voltage is larger.

[0034] The embodiment of the present invention provides a display panel, including a pixel driving circuit, and the pixel driving circuit includes:

[0035] A first transistor, connected in series with a light-emitting element between a first power supply line and a second power supply line, and the source of the first transistor is electrically connected to the light-emitting element;

[0036] A second transistor, wherein a source of the second transistor is electrically connected to a first signal line, a drain of the second transistor is electrically connected to the gate of the first transistor, and a gate of the second transistor is electrically connected to a second signal line;

[0037] A first module, wherein an input end of the first module is electrically connected to a third signal line, an output end of the first module is electrically connected to the gate of the first transistor, and a control end of the first module is electrically connected to a fourth signal line.

[0038] In one embodiment, the first module includes:

[0039] A first capacitor, wherein a first electrode plate of the first capacitor is electrically connected to the gate of the first transistor to serve as the output end of the first module;

[0040] A third transistor, wherein a drain of the third transistor is electrically connected to a second electrode plate of the first capacitor, a source of the third transistor is electrically connected to the input end of the first module, and a gate of the third transistor is electrically connected to the fourth signal line.

[0041] In one embodiment, the first module further includes:

[0042] A fourth transistor, wherein a drain of the fourth transistor is electrically connected to the drain of the third transistor, a source of the fourth transistor is electrically connected to the input end of the first module, and a gate of the fourth transistor is electrically connected to a fifth signal line different from the gate of the driving transistor;

[0043] Wherein, the gate of the third transistor is electrically connected to the gate of the first transistor.

[0044] In one embodiment, the pixel driving circuit further includes:

[0045] A second capacitor, wherein a first electrode plate of the second capacitor is electrically connected to the second electrode plate of the first capacitor, and a second electrode plate of the second capacitor is electrically connected to the source or drain of the first transistor.

[0046] In one embodiment, the first module further includes:

[0047] A third capacitor;

[0048] A first switch, which is connected in series with the third capacitor between the gate of the first transistor and the source of the first transistor;

[0049] Wherein, in the first stage and the third stage before the first stage, the first switch is used to control the third capacitor to be electrically connected between the gate of the first transistor and the source of the first transistor.

[0050] In one embodiment, it further includes:

[0051] A fifth transistor, the source of the fifth transistor is electrically connected to a sixth signal line, the drain of the fifth transistor is electrically connected to the source of the first transistor, and the gate of the fifth transistor is electrically connected to a seventh signal line.

[0052] The present invention provides a pixel driving circuit and a display panel. The pixel driving circuit includes: a driving transistor, which is connected in series with a light-emitting element between a first power supply line and a second power supply line, and the source of the driving transistor is electrically connected to the light-emitting element; a data transistor, the source of the data transistor is electrically connected to a data line, the drain of the data transistor is electrically connected to the gate of the driving transistor, and the gate of the data transistor is loaded with a data control signal; a boosting module, the input end of the boosting module is used to load a boosting input signal, and the output end of the boosting module is electrically connected to the gate of the driving transistor; wherein, the boosting module controls the gate of the driving transistor to rise from a first voltage in a first stage to a second voltage in a second stage, the second stage is after the first stage, and the driving transistor is used to generate a driving current according to the second voltage to drive the light-emitting element to emit light. Among them, the present invention increases the driving current flowing through the light-emitting element by setting a boosting module with a boosting input signal loaded at the input end, and the output end of the boosting module is electrically connected to the gate of the driving transistor, so as to modulate the gate voltage of the driving transistor to rise from the first voltage to the second voltage, thereby improving the light-emitting brightness of the light-emitting element, and thus improving the brightness of the display panel. Description of the Drawings

[0053] The present invention will be further described below with reference to the drawings. It should be noted that the drawings in the following description are only used to explain some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0054] Figure 1 It is a circuit diagram of the first pixel driving circuit provided by an embodiment of the present invention.

[0055] Figure 2 It is a circuit diagram of the second pixel driving circuit provided by an embodiment of the present invention.

[0056] Figure 3 It is a circuit diagram of the third pixel driving circuit provided by an embodiment of the present invention.

[0057] Figure 4 This is the circuit diagram of the fourth pixel driving circuit provided by the embodiment of the present invention.

[0058] Figure 5 This is the circuit diagram of the fifth pixel driving circuit provided by the embodiment of the present invention.

[0059] Figure 6 This is the circuit diagram of the sixth pixel driving circuit provided by the embodiment of the present invention.

[0060] Figure 7 This is the waveform diagram of some signals provided by the embodiment of the present invention. Detailed implementation manners

[0061] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0062] The terms "first", "second", "third", etc. in the present invention are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. In addition, the terms "source electrode" and "drain electrode" can be interchanged as long as the corresponding transistor has at least one source electrode and at least one drain electrode. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally further includes steps or modules not listed, or optionally further includes other steps or modules inherent to these processes, methods, products or devices.

[0063] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0064] The embodiment of the present invention provides a pixel driving circuit, and the pixel driving circuit includes but is not limited to the following embodiments and combinations of the following embodiments.

[0065] In one embodiment, as Figures 1 to 6As shown, the pixel driving circuit 100 includes: a driving transistor T1, connected in series with a light-emitting element L between a first power supply line and a second power supply line, and a source S of the driving transistor T1 is electrically connected to the light-emitting element L; a data transistor T4, a source of the data transistor T4 is electrically connected to a data line, a drain of the data transistor T4 is electrically connected to a gate G of the driving transistor T1, and a data control signal Scan is loaded on a gate of the data transistor T4; a boosting module 10, an input end of the boosting module 10 is loaded with a boosting input signal CK, and an output end of the boosting module 10 is electrically connected to the gate G of the driving transistor T1; wherein, the boosting module 10 controls the gate G of the driving transistor T1 to rise from a first voltage Vg1 in a first stage to a second voltage Vg2 in a second stage, the second stage is after the first stage, and the driving transistor T1 is configured to generate a driving current according to the second voltage Vg2 to drive the light-emitting element L to emit light.

[0066] Wherein, as Figures 1 to 6 shown, a first signal VSS may be loaded on the first power supply line, a second signal VDD may be loaded on the second power supply line, magnitudes of the first signal VSS and the second signal VDD may be two constant voltage values respectively, and a voltage value corresponding to the first signal VSS may be less than a voltage value corresponding to the second signal VDD. Wherein, the driving transistor T1 may be an N-type transistor or a P-type transistor, and the light-emitting element L may be, but is not limited to, an organic light-emitting semiconductor, a light-emitting diode, a micro light-emitting diode or a submillimeter light-emitting diode.

[0067] Specifically, as Figures 1 to 6As shown, taking the driving transistor T1 as an N-type transistor as an example for illustration, in combination with the above discussion, the drain D of the driving transistor T1 can be electrically connected to the second power supply line to be loaded with the second signal VDD. The source S of the driving transistor T1 can be electrically connected to the anode of the light-emitting element L. The cathode of the light-emitting element L can be electrically connected to the first power supply line to be loaded with the first signal VSS. For example, the voltage value corresponding to the first signal VSS can be 0 volts, that is, the cathode of the light-emitting element L can be grounded. Specifically, the gate-source voltage Vgs between the gate G of the driving transistor T1 and the source S of the driving transistor T1 drives the light-emitting element L to emit light. When the driving transistor T1 is turned on, under the action of the first signal VSS and the second signal VDD, a driving current flowing to the light-emitting element L can be generated. Among them, the magnitude of the driving current is positively correlated with the gate-source voltage Vgs between the gate G of the driving transistor T1 and the source S of the driving transistor T1. And the voltage applied to the gate G of the driving transistor T1 can generally be determined according to the voltage value corresponding to the expected gray scale of the light-emitting element L. That is, it can be considered that the voltage value corresponding to the expected gray scale of the light-emitting element L determines the magnitude of the driving current flowing to the light-emitting element L, thereby determining the light-emitting brightness of the light-emitting element L.

[0068] It should be noted that when the pixel driving circuit 100 is in the light-emitting stage, due to the relatively stable voltage drop of the light-emitting element L, the source voltage Vs of the source S of the driving transistor T1 can be a relatively stable value. That is, it can be considered that the light-emitting brightness of the light-emitting element L can be determined by the gate voltage Vg of the gate G of the driving transistor T1 at this time. Combining the above discussion, it can be known that the gate voltage Vg applied to the gate G of the driving transistor T1 can generally be determined according to the voltage value corresponding to the expected gray scale of the light-emitting element L. However, limited by the hardware of the data driving chip and considering the influence of compensation in aspects such as threshold voltage and picture uniformity, the voltage applied to the gate G of the driving transistor T1 determined according to the voltage value corresponding to the expected gray scale of the light-emitting element L is actually small, so that the driving current flowing through the light-emitting element L is small, resulting in a low light-emitting brightness of the light-emitting element L.

[0069] It can be understood that in this embodiment, by providing a boost module 10, with the input end of the boost module 10 loaded with a boost input signal CK, and the output end of the boost module 10 electrically connected to the gate G of the driving transistor T1. Compared with the above discussion, that is, the gate voltage Vg of the gate G of the driving transistor T1 can also be determined by the boost input signal CK; in the first stage, the gate G of the driving transistor T1 has a first voltage Vg1. Combining the above discussion, the first stage here can be considered as the "light-emitting stage" mentioned above. The first voltage Vg1 can be determined by at least the voltage loaded to the gate G of the driving transistor T1 "determined according to the voltage value corresponding to the expected gray scale of the light-emitting element L". Further, in this embodiment, the boost module 10 is arranged to be able to control the gate G of the driving transistor T1 to have a second voltage Vg2 related to the boost input signal CK in the second stage. The second voltage Vg2 is greater than the first voltage Vg1. The second stage here can be considered to be after the first stage, that is, the gate voltage Vg of the driving transistor T1 can rise from the first voltage Vg1 to the second voltage Vg2 under the action of the boost module 10 and the boost input signal CK, thereby increasing the driving current flowing through the light-emitting element L to improve the light-emitting brightness of the light-emitting element L. Among them, the specific structure of the boost module 10 and the waveform of the boost input signal CK can be reasonably set according to the actual situation to better improve the light-emitting brightness of the light-emitting element L.

[0070] In one embodiment, as Figures 2 to 6 shown, the boost module 10 includes: a first capacitor C1, with the first electrode plate of the first capacitor C1 electrically connected to the gate G of the driving transistor T1 to serve as the output end of the boost module 10; a first boost transistor T2, with the drain of the first boost transistor T2 electrically connected to the second electrode plate of the first capacitor C1, the source of the first boost transistor T2 electrically connected to the input end of the boost module 10, and the gate of the first boost transistor T2 loaded with a first boost control signal. The first boost transistor T2 is turned on in both the first stage and the second stage; wherein, the boost input signal CK has a first boost input voltage Vcl in the first stage, and the boost input signal CK has a second boost input voltage Vch in the second stage. The second boost input voltage is greater than the first boost input voltage.

[0071] Among them, the first boost transistor T2 can be an N-type transistor or a P-type transistor. Here, an example is given with the first boost transistor T2 being an N-type transistor and the second electrode plate of the first capacitor C1 electrically connected to node A. Specifically, as Figure 2As shown, the gate of the first boost transistor T2 can be electrically connected to the gate G of the driving transistor T1 to obtain the gate voltage Vg of the gate G of the driving transistor T1 as the first boost control signal. Combining the above discussion, in the first stage, i.e., the light-emitting stage, the gate voltage Vg of the gate G of the driving transistor T1 has a relatively large first voltage Vg1 to turn on the driving transistor T1. It can also be considered that the first boost transistor T2 is turned on simultaneously, so that the boost input signal CK is loaded onto the second plate of the first capacitor C1 through the first boost transistor T2, so that the voltage of node A is equal to the first boost input voltage Vcl. In the second stage, at the initial moment, the first boost transistor T2 can still be driven by the gate voltage Vg of the gate G of the driving transistor T1 to turn on, so that the boost input signal CK is loaded onto the second plate of the first capacitor C1 through the first boost transistor T2, so that the voltage of node A is equal to the second boost input voltage Vch, that is, the change value ΔVa of the voltage of node A can be positively correlated with (Vch - Vcl), and even equal to (Vch - Vcl). Since the voltage difference across the first capacitor C1 cannot change suddenly, the change value of the gate voltage Vg of the gate G of the driving transistor T1 electrically connected to the first plate of the first capacitor C1 is also positively correlated with (Vch - Vcl), and even equal to (Vch - Vcl), so that the gate voltage Vg of the gate G of the driving transistor T1 rises from the first voltage Vg1 to the second voltage Vg2, thereby increasing the driving current flowing through the light-emitting element L and improving the light-emitting brightness of the light-emitting element L.

[0072] Of course, as Figure 3 shown, the gate of the first boost transistor T2 can also be electrically connected to the boost control line to be loaded with the first boost control signal. The first boost control signal can be, but is not limited to, the light-emitting control signal EM. Among them, the waveform of the signal transmitted on the boost control line can be the same as or different from the waveform of the gate voltage Vg of the gate G of the driving transistor T1, as long as it can control the first boost transistor T2 to turn on in the first stage and the second stage. Specifically, for the operating principle of the gate voltage Vg of the gate G of the driving transistor T1, it can be the same as the operating principle of the gate voltage Vg of the gate G of the driving transistor T1 in the above "the gate of the first boost transistor T2 can be electrically connected to the gate G of the driving transistor T1".

[0073] Particularly, when the first boost transistor T2 is turned on, if the voltage value of the boost input signal CK remains unchanged, that is, the voltage of node A remains unchanged. When the gate G of the driving transistor T1 is switched from being loaded with the first voltage Vg1 to the floating state, due to the fact that the voltage difference across the first capacitor C1 cannot change suddenly, the gate voltage Vg of the gate G of the driving transistor T1 will not change either.

[0074] In an embodiment, as Figure 4 andFigure 5 As shown, the boost module 10 further includes: a second boost transistor T3, the drain of the second boost transistor T3 is electrically connected to the source of the first boost transistor T2, the source of the second boost transistor T3 is electrically connected to the input end of the boost module 10, the gate of the second boost transistor T3 is loaded with a second boost control signal, and the second boost transistor T3 is turned on in both the first stage and the second stage; wherein, the gate of the first boost transistor T2 is electrically connected to the gate G of the driving transistor T1.

[0075] Specifically, in combination with the above discussion, based on the embodiment that "the gate of the first boost transistor T2 can be electrically connected to the gate G of the driving transistor T1 to obtain the gate voltage Vg of the gate G of the driving transistor T1 as the first boost control signal", this embodiment is equivalent to adding a second boost transistor T3 whose on-off state is controlled by the second boost control signal in series between the input end of the boost module 10 and node A. The second boost control signal can be, but is not limited to, a light-emitting control signal generated by a light-emitting control circuit (such as the light-emitting control signal EM). That is, it can be considered that the first boost control signal and the second boost control signal jointly determine whether the boost input signal CK can be loaded to node A. In combination with the above discussion, that is, on the basis of controlling the first boost transistor T2 to turn on in the first stage and the second stage through the first boost control signal, in this embodiment, through the newly added second boost control signal and the second boost transistor T3, further control over whether the boost input signal CK can be loaded to node A can be realized, improving the accuracy of the operation of the boost module 10.

[0076] In one embodiment, as Figure 4 and Figure 5 shown, the pixel driving circuit 100 further includes: a second capacitor C2, the first electrode plate of the second capacitor C2 is electrically connected to the second electrode plate of the first capacitor C1, and the second electrode plate of the second capacitor C2 is electrically connected to the source S of the driving transistor T1 (as Figure 4 shown) or the drain D (as Figure 5 shown).

[0077] It should be noted that, in combination with the above discussion, when at least one of the first boost transistor T2 and the second boost transistor T3 is turned off, that is, when the node A is in a floating state, at this time, the first capacitor C1 and the second capacitor C2 are connected in series between the gate G and the source S of the driving transistor T1, or in series between the gate G and the drain D of the driving transistor T1. When the gate G of the driving transistor T1 is switched from the applied first voltage Vg1 to a floating state, since the voltage difference across the entire combination of the first capacitor C1 and the second capacitor C2 cannot change suddenly, the change in the gate voltage Vg of the gate G of the driving transistor T1 is equal to the change in the voltage of the gate G of the driving transistor T1 or the change in the voltage of the drain D. In particular, within a certain period of time, when the change in the voltage of the gate G of the driving transistor T1 or the change in the voltage of the drain D is 0, it can be considered that the gate voltage Vg of the gate G of the driving transistor T1 can be maintained equal to the first voltage Vg1.

[0078] In other embodiments, in combination with the above analysis, different from the above embodiments, based on the fact that the first plate of the second capacitor C2 is electrically connected to the second plate of the first capacitor C1, the second plate of the second capacitor C2 can also be set to be grounded to keep the voltage of the second plate of the second capacitor C2 unchanged, so that the gate voltage Vg of the gate G of the driving transistor T1 can also be maintained equal to the first voltage Vg1; or, different from the above embodiments, the second capacitor C2 can also be connected in series between the gate G of the driving transistor T1 and the ground. Similarly, since the second capacitor C2 is grounded, the gate voltage Vg of the gate G of the driving transistor T1 can also be maintained equal to the first voltage Vg1.

[0079] In one embodiment, as Figure 6 shown, the boost module 10 further includes: a third capacitor C3; a boost switch K, connected in series with the third capacitor C3 between the gate G of the driving transistor T1 and the source S of the driving transistor T1; wherein, in the first stage and the third stage before the first stage, the boost switch K is turned on to control the gate G of the driving transistor T1 to rise from the third voltage Vg3 in the third stage to the first voltage Vg1 in the first stage.

[0080] Similarly, in combination with the above discussion, in the first stage, the gate G of the driving transistor T1 has a first voltage Vg1. The first stage can be considered as the "light-emitting stage" mentioned above. The first voltage Vg1 can be determined at least by the voltage applied to the gate G of the driving transistor T1 "corresponding to the expected gray scale of the light-emitting element L", that is, it can be considered that the first voltage Vg1 is related to the voltage of the source S of the driving transistor T1.

[0081] Specifically, in this embodiment, the boost module 10 is further configured to have a third voltage Vg3 at the gate G of the driving transistor T1 in the third stage. The third stage can be understood as the data writing stage before the light emitting stage, that is, the third voltage Vg3 can be equal to the voltage loaded to the gate G of the driving transistor T1 "determined according to the voltage value corresponding to the expected gray scale of the light emitting element L". At this time, the source S of the driving transistor T1 has a lower voltage. Further, in combination with the above discussion, in the light emitting stage after the third stage, since the light emitting element L is turned on, the voltage of the source S of the driving transistor T1 is increased. Since the voltage difference across the third capacitor C3 cannot change suddenly, the gate voltage Vg of the gate G of the driving transistor T1 can also be increased from the third voltage Vg3 to the first voltage Vg1, thereby increasing the driving current flowing through the light emitting element L to improve the light emitting brightness of the light emitting element L.

[0082] Therefore, when the third voltage Vg3 is constant, the change amount of the gate voltage Vg of the gate G of the driving transistor T1 is related to the voltage of the source S of the driving transistor T1, specifically related to the difference between the voltage of the source S of the driving transistor T1 in the third stage and the first stage. It should be noted that, in combination with the above discussion, the boost switch K in this embodiment can at least be closed in the third stage and the first stage so that the third capacitor C3 is electrically connected between the gate G and the source S of the driving transistor T1, so that the gate voltage Vg of the gate G of the driving transistor T1 changes following the change of the source voltage Vs of the source S of the driving transistor T1, and is disconnected in the second stage to avoid the gate voltage Vg of the gate G of the driving transistor T1 changing and causing the source voltage Vs of the source S of the driving transistor T1 to change synchronously, resulting in the gate-source voltage Vgs not being able to rise, so that the driving current flowing through the light emitting element L cannot be increased.

[0083] In one embodiment, as Figures 4 to 6 shown, the pixel driving circuit 100 further includes: a reset transistor T5, the source of the reset transistor T5 is electrically connected to the reset line, the drain of the reset transistor T5 is electrically connected to the source of the driving transistor T1, and the gate of the reset transistor T5 is loaded with a reset control signal Sense Gate.

[0084] It should be noted that the pixel driving circuit 100 in the present invention may include the boosting module 10 and the driving transistor T1 as described above. Further, it may further include a data writing module and a reset module electrically connected to the driving transistor T1. The data writing module may be electrically connected to one of the gate G and the source S of the driving transistor T1, and the reset module may be electrically connected to the other of the gate G and the source S of the driving transistor T1. Specifically, in this embodiment, the data writing module is electrically connected to the gate G of the driving transistor T1, the reset module is electrically connected to the source S of the driving transistor T1, the data writing module includes the data transistor T4 mentioned above, and the reset module includes the reset transistor T5 mentioned above as an example for illustration. That is, this embodiment is illustrated based on the 3T1C circuit composed of the driving transistor T1, the data transistor T4, the reset transistor T5, and the second capacitor C2 in the pixel driving circuit 100. Of course, the circuit included in the pixel driving circuit 100 is not limited to the 3T1C circuit. For example, it may also include a 6T1C circuit, a 7T1C circuit, or other circuits.

[0085] It can be understood that, in combination with the above discussion, in this embodiment, the data control signal Scan can control the data transistor T4 to turn on at least in the third stage, so that the data signal Data on the data line is loaded onto the gate G of the driving transistor T1 to turn on the driving transistor T1. The reset control signal Sense Gate can control the reset transistor T5 to turn on at least in the stage before the third stage, so that the reset signal Vref on the reset line is loaded onto the source S of the driving transistor T1 to reset the source S of the driving transistor T1.

[0086] The embodiment of the present invention provides a display panel, including a pixel driving circuit, where the pixel driving circuit includes: a first transistor, connected in series with a light-emitting element between a first power supply line and a second power supply line, the source of the first transistor is electrically connected to the light-emitting element, and the gate-source voltage between the gate of the first transistor and the source of the first transistor drives the light-emitting element to emit light; a second transistor, the source of the second transistor is electrically connected to a first signal line, the drain of the second transistor is electrically connected to the gate of the first transistor, and the gate of the second transistor is electrically connected to a second signal line; a first module, the input end of the first module is electrically connected to a third signal line, the output end of the first module is electrically connected to the gate of the first transistor, and the control end of the first module is electrically connected to a fourth signal line.

[0087] Further, in combination with Figures 1 to 6As shown, the first transistor in this embodiment can refer to the relevant description of the driving transistor T1 above, the second transistor can refer to the relevant description of the data transistor T4 above, and the first module can refer to the relevant description of the boosting module 10 above. Based on this, the first signal line can be the data line mentioned above, the second signal line can carry the data control signal Scan mentioned above, the third signal line can carry the boosting input signal mentioned above, and the fourth signal line can carry at least one of the first boosting control signal and the second boosting control signal mentioned above.

[0088] In one embodiment, the first module includes: a first capacitor, the first electrode plate of the first capacitor is electrically connected to the gate of the driving transistor to serve as the output end of the first module; a third transistor, the drain of the third transistor is electrically connected to the second electrode plate of the first capacitor, the third transistor is electrically connected to the input end of the first module, and the gate of the third transistor is electrically connected to the fourth signal line.

[0089] Furthermore, in combination with Figures 1 to 6 As shown, the third transistor in this embodiment can refer to the relevant description of the first boosting transistor T2 above. Based on this, the fourth signal line can carry the first boosting control signal mentioned above.

[0090] In one embodiment, the first module further includes: a fourth transistor, the drain of the fourth transistor is electrically connected to the drain of the third transistor, the source of the fourth transistor is electrically connected to the input end of the first module, and the gate of the fourth transistor is electrically connected to a fifth signal line different from the gate of the driving transistor; wherein, the gate of the third transistor is electrically connected to the gate of the driving transistor.

[0091] Furthermore, in combination with Figures 1 to 6 As shown, the fourth transistor in this embodiment can refer to the relevant description of the second boosting transistor T3 above. Based on this, that is, the fourth signal line is directly connected to the gate of the driving transistor to carry the first boosting control signal, and the fifth signal line can carry the second boosting control signal.

[0092] In one embodiment, the pixel driving circuit further includes: a second capacitor, the first electrode plate of the second capacitor is electrically connected to the second electrode plate of the first capacitor, and the second electrode plate of the second capacitor is electrically connected to the source or drain of the first transistor.

[0093] Furthermore, in combination with Figures 1 to 6 As shown, the second capacitor in this embodiment can refer to the relevant description of the second capacitor C2 above.

[0094] In one embodiment, the first module further includes: a third capacitor; a first switch, connected in series with the third capacitor between the gate of the first transistor and the source of the first transistor; wherein, in the first stage and a third stage before the first stage, the first switch is turned on to control the gate of the first transistor to rise from a third voltage in the third stage to the first voltage in the first stage.

[0095] Further, as Figure 6 shown, the third capacitor in this embodiment may refer to the relevant description of the third capacitor C3 above, and the first switch may refer to the relevant description of the boost switch K above.

[0096] In one embodiment, it further includes: a fifth transistor, the source of the fifth transistor is electrically connected to a sixth signal line, the drain of the fifth transistor is electrically connected to the source of the first transistor, and the gate of the fifth transistor is electrically connected to a seventh signal line.

[0097] Further, in combination with Figures 1 to 6 shown, the fifth transistor in this embodiment may refer to the relevant description of the reset transistor T5 above. Based on this, the sixth signal line may be the reset line mentioned above, and the seventh signal line may be loaded with a reset control signal Sense Gate.

[0098] The embodiment of the present invention provides a driving method, in combination with Figures 1 to 6 shown, for driving the pixel driving circuit 100 as described in any of the above, including: configuring the boost input signal CK according to the source voltage Vs of the source S of the driving transistor T1 in the first stage; through the boost input signal CK and the boost module 10, controlling the gate G of the driving transistor T1 to have a second voltage Vg2 related to the boost input signal CK, and the second voltage Vg2 is greater than the first voltage Vg1 that the gate of the driving transistor T1 has in the first stage.

[0099] Specifically, as analyzed above, the magnitude of the driving current flowing through the light-emitting element L is positively correlated with the gate-source voltage Vgs between the gate G and the source S of the driving transistor T1. During the first stage, which is the light-emitting stage, during the subsequent light emission of the light-emitting element L, it can be considered that the source voltage Vs of the source S of the driving transistor T1 is approximately equal to its voltage during the first stage. Therefore, in this embodiment, by configuring the boost input signal CK according to the source voltage Vs of the source S of the driving transistor T1 during the first stage, the second voltage Vg2 can be made to depend on the source voltage Vs of the source S of the driving transistor T1. For example, the larger the source voltage Vs of the source S of the driving transistor T1, when the first boost input voltage Vcl during the first stage in the corresponding boost input signal CK is determined (e.g., equal to 0), the second boost input voltage Vch that the boost input signal CK has during the second stage can be set to be larger, so that the second voltage Vg2 of the gate G of the driving transistor T1 during the second stage is larger, thereby making the gate-source voltage Vgs between the gate G and the source S of the driving transistor T1 appropriate during the second stage.

[0100] Specifically, based on Figure 4 and Figure 5 the circuit diagram shown, in combination with Figure 7 the timing diagram shown, the working process of the pixel driving circuit 100 can include but is not limited to the following stages;

[0101] During the reset stage t1, the data control signal Scan equals the corresponding high potential to control the data transistor T4 to turn on. The data signal Data on the data line equals the corresponding low potential and is transmitted through the data transistor T4 to the gate G of the driving transistor T1 to reset the gate G of the driving transistor T1. At the same time, the reset control signal Sense Gate equals the corresponding high potential to control the reset transistor T5 to turn on. The reset signal Vref on the reset line is constantly equal to the corresponding low potential and is transmitted through the reset transistor T5 to the source S of the driving transistor T1 to reset the source S of the driving transistor T1;

[0102] During the data writing stage t2, the data control signal Scan maintains the corresponding high potential to keep the data transistor T4 turned on. The data signal Data on the data line, which is equal to the corresponding high potential Vdata, is transmitted to the gate G of the driving transistor T1 through the data transistor T4, making the gate voltage Vg of the gate G of the driving transistor T1 equal to Vdata. That is, the first boost control signal (i.e., the gate voltage Vg of the gate G of the driving transistor T1) is equal to the high potential Vdata corresponding to the data signal Data to control the first boost transistor T2 to turn on. At the same time, the second boost control signal (such as the light emission control signal EM) is also equal to the corresponding high potential to control the second boost transistor T3 to turn on. The boost input signal CK on the input end of the boost module 10 is equal to the corresponding low potential Vcl and is transmitted to the node A through the first boost transistor T2 and the second boost transistor T3. At the same time, the reset control signal Sense Gate maintains the corresponding high potential to keep the reset transistor T5 turned on. The reset signal Vref on the reset line is constantly equal to the corresponding low potential and is transmitted to the source S of the driving transistor T1 through the reset transistor T5, keeping the light-emitting element L cut off;

[0103] During the light emission stage t3, the data control signal Scan is equal to the corresponding low potential to control the data transistor T4 to turn off, and the reset control signal Sense Gate is equal to the corresponding low potential to control the reset transistor T5 to turn off. Similarly, at the initial moment, the gate voltage Vg of the gate G of the driving transistor T1 is still equal to Vdata, making the first boost transistor T2 and the second boost transistor T3 still maintained in the on state, so that the boost input signal CK is equal to the corresponding low potential Vcl and is transmitted to the node A. Combining with the function of the first capacitor C1, the gate voltage Vg of the gate G of the driving transistor T1 is still maintained at Vdata. At this time, due to the first capacitor, the driving transistor T1 is maintained in the on state. The second signal VDD on the second power line is constantly equal to the corresponding high potential, and the first signal VSS on the first power line is constantly equal to the corresponding low potential. And the reset transistor T5 is turned off, and the light-emitting element L is turned on. The driving current I flows through the light-emitting element L at the first current value I1, and the source voltage Vs of the source S of the driving transistor T1 is equal to the conduction voltage drop VL of the light-emitting element L;

[0104] During the brightening stage t4, at the initial moment, the source voltage Vs of the source electrode S of the driving transistor T1 is still equal to the turn-on voltage drop VL of the light-emitting element L, and the gate voltage Vg of the gate G of the driving transistor T1 is still equal to Vdata, so that the first boost transistor T2 remains turned on, and the second boost control signal (such as the light-emitting control signal EM) remains at the corresponding high potential, so that the second boost transistor T3 remains turned on, making the boost input signal CK equal to the corresponding high potential Vch and transmitted to node A, that is, the voltage of node A rises by ΔVa. Combining the effect of the first capacitor C1, the gate voltage Vg of the gate G of the driving transistor T1 also rises to (Vdata + ΔVa). At this time, the gate-source voltage Vgs between the gate G and the source S of the driving transistor T1 is increased, so that the driving current I flowing through the light-emitting element L rises to the second current value I2, so that the source voltage Vs of the source electrode S of the driving transistor T1 also rises slightly.

[0105] It can be understood that, in combination with the above discussion, in the present invention, by providing the boost module 10 and the corresponding boost input signal CK, the pixel driving circuit 100 has the "brightening stage" mentioned above. In the "brightening stage", the gate voltage Vg of the gate G of the driving transistor T1 is increased, so that the gate-source voltage Vgs between the gate G and the source S of the driving transistor T1 is increased, so that the driving current I flowing through the light-emitting element L is also increased, thereby increasing the light-emitting brightness of the light-emitting element L and thus increasing the brightness of the display panel.

[0106] It should be noted that after the brightening stage t4 of this frame, even if the boost input signal CK is maintained at the corresponding high potential for a period of time to implement other functions for other devices loaded with the boost input signal CK, that is, to improve the multiplexing rate of the boost input signal CK, but the second boost control signal (such as the light-emitting control signal EM) equal to the corresponding low potential can control the second boost transistor T3 to turn off to make node A floating, so as to end the modulation of the gate voltage Vg of the gate G of the driving transistor T1. In addition, in combination with the above discussion, in the reset stage t1, data writing stage t2 and light-emitting stage t3 of some frames, since the change of the voltage of node A is not required to modulate the gate voltage Vg of the gate G of the driving transistor T1, the second boost control signal (such as the light-emitting control signal EM) can also be at the corresponding low voltage in the reset stage t1 and data writing stage t2 to control the second boost transistor T3 to turn off to save energy.

[0107] The embodiment of the present invention provides a display panel, in combination with Figures 1 to 6As shown, it includes a plurality of pixel driving circuits 100 as described in any of the above. Specifically, the display panel may include a display area and a non-display area surrounding the display area. The plurality of pixel driving circuits 100 may be disposed in the display area. Further, at least some of the pixel driving circuits 100 may be arranged in an array.

[0108] In one embodiment, in combination with Figures 1 to 6 As shown, the display panel further includes: a data generation chip located on at least one side of the plurality of pixel driving circuits 100. A plurality of data lines are electrically connected to the data generation chip to obtain a data signal Data. Specifically, in combination with the above discussion, when the data transistor T4 is turned on, the data signal Data obtained by the corresponding data line can be loaded onto the gate G of the driving transistor T1 through the data transistor T4 to turn on the driving transistor T1. Subsequently, in combination with the voltage stabilization effect of the second capacitor C2 and the source voltage Vs of the driving transistor T1, the light-emitting element L can be controlled to emit light at a first brightness.

[0109] In one embodiment, for the pixel driving circuit 100 far from the data generation chip, compared with the pixel driving circuit 100 close to the data generation chip, the absolute value of the voltage value of the corresponding data signal Data is larger. It should be noted that the data generation chip is disposed close to at least one side of the plurality of pixel driving circuits 100, that is, the distances between the plurality of pixel driving circuits 100 and the data generation chip are different, resulting in different attenuation degrees of the data signal Data received by the pixel driving circuits 100 at different positions. For example, if the data signal Data loaded onto each data line is the same, it will cause differences in the magnitudes of the voltages of the data signal Data finally loaded onto the pixel driving circuits 100 at different positions, affecting the uniformity of the displayed image.

[0110] It can be understood that in this embodiment, for the pixel driving circuit 100 far from the data generation chip, compared with the pixel driving circuit 100 close to the data generation chip, the attenuation degree of the received data signal Data is greater. Based on this, in this embodiment, the absolute value of the voltage value of the data signal Data loaded by the pixel driving circuit 100 far from the data generation chip is larger, so as to make up for the excessive attenuation of the data signal Data caused by the large distance from the data generation chip, thereby reducing the difference in the attenuation of the data signal Data loaded by the pixel driving circuits 100 at different positions and improving the uniformity of the displayed image of the display panel.

[0111] In one embodiment, in combination with Figures 1 to 6As shown in the figure, the display panel further includes: a signal generation chip located on at least one side of the plurality of pixel driving circuits 100, and the input ends of the plurality of boosting modules 10 are electrically connected to the signal generation chip to obtain the boosting input signal CK; wherein, the boosting input signal has a first boosting input voltage in the first stage, and the boosting input signal has a second boosting input voltage in the second stage, and the second boosting input voltage is greater than the first boosting input voltage; wherein, for the pixel driving circuit 100 far from the data generation chip, compared with the pixel driving circuit 100 close to the data generation chip, the difference between the corresponding second boosting input voltage and the corresponding first boosting input voltage is larger.

[0112] Specifically, both the signal generation chip and the data generation chip can be fixed to the non-display area on the front or the back of the display panel by, but not limited to, COF (Chip On Film), COG (Chip On Glass), COP (Chip On Pi) or other packaging technologies. Among them, both the signal generation chip and the data generation chip can be disposed close to at least one side of the plurality of pixel driving circuits 100, that is, the distances between the pixel driving circuits 100 at different positions and the signal generation chip can be different, and the distances between the pixel driving circuits 100 at different positions and the data generation chip can also be different. It should be noted that, in combination with the above discussion, different distances between the pixel driving circuits 100 at different positions and the data generation chip will result in different attenuation degrees of the data signals Data received by the pixel driving circuits 100 at different positions. For example, if the data signals Data loaded on each data line are the same, it will cause differences in the magnitudes of the voltages of the data signals Data finally loaded on the pixel driving circuits 100 at different positions, which affects the uniformity of the screen display. Different attenuation degrees of the data signals Data will also cause differences in the magnitudes of the corresponding first voltages.

[0113] It can be understood that in this embodiment, the pixel driving circuit 100 far from the data generation chip has a greater attenuation degree of the received data signal Data compared to the pixel driving circuit 100 close to the data generation chip. Based on this, in this embodiment, the boost input signal CK loaded by the pixel driving circuit 100 far from the data generation chip is set such that the difference between the second boost input voltage Vch and the corresponding first boost input voltage Vcl is relatively large, that is, the change value ΔVa of the voltage at node A (which is positively correlated with (Vch - Vcl)) can also be relatively large, so as to make up for the loss of the first brightness being too small caused by the first voltage being too small due to the large distance from the data generation chip. By setting a relatively large ΔVa, the difference in the difference between the second voltage and the first voltage in the pixel driving circuits 100 at different positions can be reduced, so that the difference in the second brightness of the light-emitting elements L at different positions can be relatively small, improving the uniformity of the display screen of the display panel.

[0114] The present invention provides a pixel driving circuit and a display panel. The pixel driving circuit includes: a driving transistor connected in series with the light-emitting element between a first power supply line and a second power supply line, and the source electrode of the driving transistor is electrically connected to the light-emitting element; a data transistor, the source electrode of the data transistor is electrically connected to a data line, the drain electrode of the data transistor is electrically connected to the gate of the driving transistor, and a data control signal is loaded on the gate of the data transistor; a boost module, the input end of the boost module is used to load a boost input signal, and the output end of the boost module is electrically connected to the gate of the driving transistor; wherein, the boost module controls the gate of the driving transistor to rise from a first voltage in a first stage to a second voltage in a second stage, and the second stage is after the first stage, and the driving transistor is used to generate a driving current according to the second voltage to drive the light-emitting element to emit light. Among them, in the present invention, by providing a boost module with a boost input signal loaded at the input end, and the output end of the boost module is electrically connected to the gate of the driving transistor, the gate voltage of the driving transistor can be modulated to rise from a first voltage to a second voltage, thereby increasing the driving current flowing through the light-emitting element, so as to improve the light-emitting brightness of the light-emitting element, and thus improve the brightness of the display panel.

[0115] The above has introduced in detail the pixel driving circuit and the display panel provided by the embodiments of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pixel driving circuit, characterized in that Comprising: A driving transistor, connected in series with a light-emitting element between a first power supply line and a second power supply line, the source of the driving transistor being electrically connected to the light-emitting element; A data transistor, the source of the data transistor being electrically connected to a data line, the drain of the data transistor being electrically connected to the gate of the driving transistor, and a data control signal being loaded on the gate of the data transistor; A boosting module, the input end of the boosting module being used to load a boosting input signal, and the output end of the boosting module being electrically connected to the gate of the driving transistor; Wherein, the boosting module controls the gate of the driving transistor to rise from a first voltage in a first stage to a second voltage in a second stage, the second stage being after the first stage, and the driving transistor is used to generate a driving current according to the second voltage to drive the light-emitting element to emit light; Wherein, the boosting module includes: A first capacitor, the first electrode plate of the first capacitor being electrically connected to the gate of the driving transistor to serve as the output end of the boosting module; A first boosting transistor, the drain of the first boosting transistor being electrically connected to the second electrode plate of the first capacitor, the source of the first boosting transistor being electrically connected to the input end of the boosting module, and the gate of the first boosting transistor being electrically connected to the gate of the driving transistor to obtain the signal of the gate of the driving transistor as a first boosting control signal, and the first boosting transistor is turned on in both the first stage and the second stage; Wherein, the boosting input signal has a first boosting input voltage in the first stage, and the boosting input signal has a second boosting input voltage in the second stage, and the second boosting input voltage is greater than the first boosting input voltage.

2. The pixel driving circuit according to claim 1, wherein The boosting module further includes: A second boosting transistor, the drain of the second boosting transistor being electrically connected to the source of the first boosting transistor, the source of the second boosting transistor being electrically connected to the input end of the boosting module, a second boosting control signal being loaded on the gate of the second boosting transistor, and the second boosting transistor is turned on in both the first stage and the second stage.

3. The pixel driving circuit according to claim 1 or 2, wherein Further comprising: A second capacitor, the first electrode plate of the second capacitor being electrically connected to the second electrode plate of the first capacitor, and the second electrode plate of the second capacitor being electrically connected to the source or the drain of the driving transistor.

4. The pixel driving circuit according to claim 1 or 2, characterized in that, The boosting module further includes: A third capacitor; A boosting switch, connected in series with the third capacitor between the gate of the driving transistor and the source of the driving transistor; Wherein, in the first stage and a third stage before the first stage, the boosting switch is turned on to control the gate of the driving transistor to rise from a third voltage in the third stage to the first voltage in the first stage.

5. The pixel driving circuit according to claim 1 or 2, characterized in that, Further comprising: A reset transistor, the source of the reset transistor being electrically connected to a reset line, the drain of the reset transistor being electrically connected to the source of the driving transistor, and a reset control signal being loaded on the gate of the reset transistor.

6. A display panel, characterized in that, It includes multiple pixel driving circuits as described in any one of claims 1 to 5.

7. The display panel according to claim 6, wherein It further includes: A data generation chip, located on at least one side of the multiple pixel driving circuits, and multiple data lines are electrically connected to the data generation chip to obtain data signals.

8. The display panel according to claim 7, wherein For the pixel driving circuit far from the data generation chip relative to the pixel driving circuit close to the data generation chip, the absolute value of the voltage value of the corresponding data signal is larger.

9. The display panel according to claim 7, wherein It further includes: A signal generation chip, located on at least one side of the multiple pixel driving circuits, and the input ends of the multiple boosting modules are electrically connected to the signal generation chip to obtain the boosting input signal; Wherein, the boosting input signal has a first boosting input voltage in the first stage, and the boosting input signal has a second boosting input voltage in the second stage, and the second boosting input voltage is greater than the first boosting input voltage; Wherein, for the pixel driving circuit far from the data generation chip relative to the pixel driving circuit close to the data generation chip, the difference between the corresponding second boosting input voltage and the corresponding first boosting input voltage is larger.

10. A display panel, characterized in that, It includes a pixel driving circuit, and the pixel driving circuit includes: A first transistor, connected in series with the light-emitting element between a first power supply line and a second power supply line, and the source electrode of the first transistor is electrically connected to the light-emitting element; A second transistor, the source electrode of the second transistor is electrically connected to a first signal line, the drain electrode of the second transistor is electrically connected to the gate of the first transistor, and the gate of the second transistor is electrically connected to a second signal line; A first module, the input end of the first module is electrically connected to a third signal line, the output end of the first module is electrically connected to the gate of the first transistor, and the control end of the first module is electrically connected to a fourth signal line; Wherein, the first module controls the gate of the first transistor to rise from a first voltage in the first stage to a second voltage in the second stage, and the second stage is after the first stage, and the first transistor is used to generate a driving current according to the second voltage to drive the light-emitting element to emit light; Wherein, the first module includes: A first capacitor, the first electrode plate of the first capacitor is electrically connected to the gate of the first transistor to serve as the output end of the first module; A third transistor, the drain electrode of the third transistor is electrically connected to the second electrode plate of the first capacitor, the source electrode of the third transistor is electrically connected to the input end of the first module, and the gate of the third transistor is electrically connected to the gate of the first transistor to obtain the signal of the gate of the first transistor as a first boosting control signal, and the third transistor is turned on in both the first stage and the second stage; Wherein, the boosting input signal transmitted by the third signal line has a first boosting input voltage in the first stage, and the boosting input signal has a second boosting input voltage in the second stage, and the second boosting input voltage is greater than the first boosting input voltage.

11. The display panel according to claim 10, wherein The first module further includes: A fourth transistor, a drain of the fourth transistor is electrically connected to the drain of the third transistor, a source of the fourth transistor is electrically connected to the input terminal of the first module, and a gate of the fourth transistor is electrically connected to a fifth signal line different from the gate of the first transistor.

12. The display panel according to claim 10 or 11, wherein The pixel driving circuit further includes: A second capacitor, a first electrode plate of the second capacitor is electrically connected to the second electrode plate of the first capacitor, and a second electrode plate of the second capacitor is electrically connected to the source or the drain of the first transistor.

13. The display panel according to any one of claims 10 to 11, characterized in that, The first module further includes: A third capacitor; A first switch, which is connected in series with the third capacitor between the gate of the first transistor and the source of the first transistor, and the first switch is used to control the third capacitor to be electrically connected between the gate of the first transistor and the source of the first transistor.

14. The display panel according to any one of claims 10 to 11, characterized in that, It further includes: A fifth transistor, a source of the fifth transistor is electrically connected to a sixth signal line, a drain of the fifth transistor is electrically connected to the source of the first transistor, and a gate of the fifth transistor is electrically connected to a seventh signal line.

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