Light-emitting driving circuit and display panel

By using a six-transistor light-emitting drive circuit and a 180° phase difference square wave signal control, a smooth transition is achieved when the light-emitting drive circuit switches between high and low levels. This solves the step phenomenon, improves the response speed of the display panel, and reduces the bezel width, meeting the requirements of narrow bezel design.

CN121122168APending Publication Date: 2025-12-12EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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Patent Information

Application Number
CN202410757491.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-12
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

Existing light-emitting driving circuits exhibit a step-like transition from high to low levels, resulting in poor display effects and slow response speed of the display panel. Furthermore, increasing the power of the driving circuit leads to higher overall power consumption, increased complexity, and higher costs.

Method used

A six-transistor light-emitting driving circuit, combined with a square wave signal control with a 180° phase difference, is used to achieve a smooth transition when the signal switches between high and low levels. Furthermore, the response time is reduced by optimizing the transistor turn-on speed.

Benefits of technology

It eliminates the stepped drop phenomenon, improves display effect and response speed, reduces the number of circuit components, and reduces the bezel width, which is in line with the development trend of narrow bezel display panels.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the field of display panels, and provides a light-emitting driving circuit and a display panel, the light-emitting driving circuit comprises multiple stages of light-emitting driving units, and each stage of light-emitting driving unit comprises six transistors, a capacitor, a signal input end, a signal output end and two time sequence control ends. According to the invention, by providing the light-emitting driving circuit with six transistors, smooth transition of an output signal during high and low level switching is realized, and a step-type step pull-down phenomenon is eliminated. Meanwhile, by optimizing the starting speed of the transistor, the response time of the circuit is remarkably shortened. Besides, the number of components of the light-emitting driving circuit is reduced by simplifying the use of time sequence control signal lines and transistors, so that the frame width of the display panel is effectively reduced, and the development trend of a narrow-frame display panel is met.
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Description

Technical Field

[0001] This invention relates to the field of display panels, and more specifically, to a light-emitting driving circuit and a display panel. Background Technology

[0002] With the rapid development of display technology, display panels have been widely used in daily life, such as in smartphones, tablets, laptops, and televisions. Market demand for display panels is no longer limited to high resolution and high brightness; it also emphasizes aesthetic design and user comfort. Narrow bezel display panels, due to their ability to provide a larger display area and a more immersive viewing experience, have become one of the mainstream trends in modern display technology. Narrow bezel display panels require the integration of more electronic components and circuits within a limited bezel space. Narrow bezel designs necessitate higher circuit integration to accommodate the necessary driving circuitry within the narrow bezel. This requires the driving circuitry to not only be miniaturized but also possess high efficiency and high reliability. This presents new challenges to the design of light-emitting driving circuits.

[0003] Furthermore, existing light-emitting driver circuits have unsatisfactory output performance in display panel applications, especially during the pull-down process from high to low levels, where the output often exhibits a "step" phenomenon. For example, traditional driver circuits often produce a stepped output signal when transitioning from high to low levels, the so-called "step" phenomenon. This phenomenon can cause mura when displaying special images, affecting the display effect. The "step" phenomenon also leads to slow response speed, failing to quickly adapt to the dynamic changes required by the display panel. This can result in ghosting or blurring when displaying rapidly changing images. Current technologies typically increase the power of the driver circuit. However, this method increases the overall power consumption of the driver circuit and is detrimental to the high-efficiency and energy-saving design of narrow-bezel display panels. Additionally, some technical solutions improve output signal quality and response speed by increasing circuit complexity, but this increases the complexity of circuit design and manufacturing, raises production costs, and reduces reliability.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an improved light-emitting driving circuit and a display panel. By providing a light-emitting driving circuit with six transistors, the present invention achieves a smooth transition when the output signal switches between high and low levels, eliminating the stepped pull-down phenomenon. Simultaneously, by optimizing the transistor turn-on speed, the circuit response time is significantly reduced. Furthermore, by simplifying the timing control signal lines and the use of transistors, the present invention reduces the number of components in the light-emitting driving circuit, thereby effectively reducing the bezel width of the display panel to align with the development trend of narrow-bezel display panels.

[0006] One aspect of the present invention provides a light-emitting driving circuit, including a multi-stage light-emitting driving unit, wherein the light-emitting driving unit includes:

[0007] A first transistor, wherein the first terminal of the first transistor is connected to a first power supply, the second terminal of the first transistor is connected to the first terminal of a third transistor, and the gate of the first transistor is connected to a second timing control terminal;

[0008] The second terminal of the third transistor is connected to the third node, and the gate of the third transistor is connected to the signal input terminal through the second node;

[0009] The second transistor has its first terminal connected to a second power supply, its second terminal connected to the first terminal of a fourth transistor, and its gate connected to a first timing control terminal.

[0010] The second terminal of the fourth transistor is connected to the first node, and the gate of the fourth transistor is connected to the signal input terminal through the second node;

[0011] The fifth transistor has its first terminal connected to the first power supply, its second terminal connected to the signal output terminal, and its gate connected to the third node.

[0012] The sixth transistor has its first terminal connected to the second power supply, its second terminal connected to the signal output terminal, and its gate connected to the first node.

[0013] A first capacitor, wherein the first terminal of the first capacitor is connected to the first power source, and the second terminal is connected to the third node.

[0014] Furthermore, the light-emitting driving circuit also includes a timing controller, which includes a first timing control signal line and a second timing control signal line.

[0015] Furthermore, the first timing control signal line is used to output the first timing control signal; the second timing control signal line is used to output the second timing control signal.

[0016] Furthermore, the first timing control signal and the second timing control signal are square wave signals with the same output frequency and a phase difference of 180°.

[0017] Furthermore, the light-emitting driving unit is used to perform delay processing on the signal received from the signal input terminal under the control of the first timing control signal and the second timing control signal, and the processed signal is output by the signal output terminal.

[0018] Furthermore, the previous stage light-emitting driving unit outputs a light-emitting driving signal to the next stage light-emitting driving unit, and the last stage light-emitting driving unit outputs a light-emitting driving signal.

[0019] Furthermore, in the odd-numbered light-emitting driving unit, the first timing control terminal is connected to the first timing control signal line, and the second timing control terminal is connected to the second timing control signal line.

[0020] Furthermore, in the even-numbered light-emitting driving unit, the first timing control terminal is connected to the second timing control signal line, and the second timing control terminal is connected to the first timing control signal line.

[0021] Furthermore, the first transistor, the second transistor, the third transistor, and the fifth transistor are P-type TFTs, while the fourth transistor and the sixth transistor are N-type TFTs.

[0022] Another aspect of the present invention provides a display panel including the above-described light-emitting driving circuit.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 A schematic diagram of the drive circuit for controlling the display panel of the present invention is shown.

[0026] Figure 2 A schematic diagram of the cascaded light-emitting driving circuit of the present invention is shown;

[0027] Figure 3 A circuit diagram of the light-emitting driving unit of the present invention is shown;

[0028] Figure 4 Show Figure 3 The waveform diagram shown is of the light-emitting driving unit in operation.

[0029] Figure label:

[0030] 10 Display Panel

[0031] 11 Display Area

[0032] 20. Timing Controller

[0033] 30 Light-emitting driving circuit

[0034] CKE1 First Timing Control Signal Line

[0035] CKE2 Second Timing Control Signal Line

[0036] c1 First timing control terminal

[0037] c2 Second timing control terminal

[0038] IN signal input terminal

[0039] Eout signal output terminal

[0040] M1 First Transistor

[0041] M2 Second Transistor

[0042] M3 Third Transistor

[0043] M4 fourth transistor

[0044] M5 fifth transistor

[0045] M6 sixth transistor

[0046] C1 First capacitor

[0047] VDD First Power Supply

[0048] VEE Second Power Supply

[0049] N1 First Node

[0050] N2 Second Node

[0051] N3 Third Node

[0052] STE start pulse signal Detailed Implementation

[0053] 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 embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0054] The use of terms such as "first," "second," and similar terms in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Furthermore, in the description of this invention, terms such as "upper," "lower," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention.

[0055] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features in different embodiments can be combined with each other.

[0056] Through meticulous and in-depth research, the inventors in this case have provided a solution to the problems existing in the prior art. Figure 1 A schematic diagram of the drive circuit for controlling the display panel of the present invention is shown. Figure 2 A schematic diagram of the cascaded light-emitting driving circuit of the present invention is shown; Figure 3 A circuit diagram of the light-emitting driving unit of the present invention is shown. (As shown) Figures 1 to 4 As shown, this invention discloses a light-emitting driving circuit 30 and a display panel 10. The light-emitting driving circuit 30 includes a multi-stage light-emitting driving unit and a timing controller 20. Each stage of the light-emitting driving unit specifically includes six transistors, one capacitor, one signal input terminal, one signal output terminal, and two timing control terminals. The timing controller 20 includes two timing control signal lines. This invention's light-emitting driving circuit and display panel, by providing a new light-emitting driving circuit with six transistors, achieve a smooth transition of the output signal during high-low level switching, eliminating the step-like pull-down phenomenon. Simultaneously, by optimizing the transistor turn-on speed, the circuit response time is significantly reduced. Furthermore, this invention's light-emitting driving circuit only has two timing control terminals. By simplifying the timing control signal lines and the use of transistors, the number of components in the light-emitting driving circuit is reduced, thereby effectively reducing the bezel width of the display panel to align with the development trend of narrow-bezel display panels.

[0057] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0058] like Figure 1As shown, the present invention provides a display panel 10, which includes a display area 11 and a non-display area. The display panel 10 includes a pixel array and a scanning drive circuit and a light-emitting drive circuit 30 for controlling the pixel array. The display panel 10 adopts a line-by-line scanning display method, wherein the scanning drive circuit generates a scanning signal to sequentially activate each row of pixels, and the light-emitting drive circuit 30 provides a data signal to a row of pixels when it is activated to achieve pixel display. The light-emitting drive circuit 30 includes multiple cascaded light-emitting drive units, each of which typically consists mainly of several transistors and capacitors. By inputting a clock signal and a start pulse signal to the light-emitting drive unit, a level signal is output at the output terminal. The light-emitting drive circuit 30, the data driver, and the scanning drive circuit are located in the non-display area of ​​the display panel 10. The display area 11 includes an array of light-emitting pixels and pixel circuits. The light-emitting pixels emit light under the combined action of the light-emitting drive circuit 30, the data driver, the scanning drive circuit, and the pixel circuits.

[0059] like Figure 1 and 4 As shown, the present invention also provides a light-emitting driving circuit 30, which includes a multi-level light-emitting driving unit and a timing controller 20.

[0060] In some embodiments, such as Figure 3 As shown, the light-emitting driving unit includes 6 transistors, 1 capacitor, a signal input terminal IN, a signal output terminal Eout, a first timing control terminal c1, and a second timing control terminal c2. Each stage of the light-emitting driving unit outputs a light-emitting driving signal, which is input to a row of pixel circuits in the display area 11 of the display panel 10 to drive that row of pixels to emit light. The previous stage of the light-emitting driving unit also outputs its light-emitting driving signal to the signal input terminal IN of the next stage of the light-emitting driving unit as a start signal. Since the last stage of the light-emitting driving unit does not have a next stage, its output light-emitting driving signal is only input to the pixel circuit of that row.

[0061] Specifically, Figure 2Taking a cascaded array of five LED driving units as an example, the first-stage LED driving unit E1 receives a start pulse signal STE at its input terminal IN1. The first-stage LED driving unit E1 outputs an LED driving signal at its output terminal Eout1, which serves as the input signal for the second-stage LED driving unit E2. Eout1 is connected to the second-stage LED driving unit E2's input terminal IN2. The second-stage LED driving unit E2 outputs an LED driving signal at its output terminal Eout2, which serves as the input signal for the third-stage LED driving unit E3. Eout2 is connected to the third-stage LED driving unit E3's input terminal IN3. The third-stage LED driving unit E3 outputs an LED driving signal at its output terminal Eout3, which serves as the input signal for the fourth-stage LED driving unit E4. Eout3 is connected to the fourth-stage LED driving unit E4's input terminal IN4. The signal output terminal Eout4 of the fourth-stage light-emitting driving unit E4 outputs a light-emitting driving signal as the input signal of the fifth-stage light-emitting driving unit E5. The signal output terminal Eout4 of the fourth-stage light-emitting driving unit E4 is connected to the signal input terminal IN5 of the fifth-stage light-emitting driving unit E5... Subsequent light-emitting driving units repeat this process to form the light-emitting driving circuit 30.

[0062] Figure 4 Show Figure 3 The waveform diagram shown illustrates the operation of the light-emitting driving unit. In some embodiments, such as... Figures 1 to 4 As shown, the timing controller 20 includes a first timing control signal line CKE1 and a second timing control signal line CKE2. The first timing control signal line CKE1 is used to output a first timing control signal. The second timing control signal line CKE2 is used to output a second timing control signal. The first and second timing control signals are square wave signals with the same output frequency and a phase difference of 180°.

[0063] In some embodiments, such as Figure 2As shown, in the first-stage light-emitting driving unit, the first timing control terminal c1 is connected to the first timing control signal line CKE1 to receive the first timing control signal. The second timing control terminal c2 is connected to the second timing control signal line CKE2 to receive the second timing control signal. In the second-stage light-emitting driving unit, the first timing control terminal c1 is connected to the second timing control signal line CKE2 to receive the second timing control signal. The second timing control terminal c2 is connected to the first timing control signal line CKE1 to receive the first timing control signal. In the third-stage light-emitting driving unit, the first timing control terminal c1 is connected to the first timing control signal line CKE1 to receive the first timing control signal. The second timing control terminal c2 is connected to the second timing control signal line CKE2 to receive the second timing control signal. In the fourth-stage light-emitting driving unit, the first timing control terminal c1 is connected to the second timing control signal line CKE2 to receive the second timing control signal. The second timing control terminal c2 is connected to the first timing control signal line CKE1 and is used to receive the first timing control signal. In the fifth-level light-emitting driving unit, the first timing control terminal c1 is connected to the first timing control signal line CKE1 and is used to receive the first timing control signal. The second timing control terminal c2 is connected to the second timing control signal line CKE2 and is used to receive the second timing control signal... and so on, resulting in: In odd-numbered-level light-emitting driving units, the first timing control terminal c1 is connected to the first timing control signal line CKE1 and is used to receive the first timing control signal, and the second timing control terminal c2 is connected to the second timing control signal line CKE2 and is used to receive the second timing control signal. In even-numbered-level light-emitting driving units, the first timing control terminal c1 is connected to the second timing control signal line CKE2 and is used to receive the second timing control signal, and the second timing control terminal c2 is connected to the first timing control signal line CKE1 and is used to receive the first timing control signal.

[0064] In some embodiments of the present invention, such as Figure 3 As shown, each stage of the light-emitting driving unit specifically includes 6 transistors, 1 capacitor, a signal input terminal IN, a signal output terminal Eout, a first timing control terminal c1, and a second timing control terminal c2.

[0065] In this embodiment, specifically, the light-emitting driving unit includes: a first transistor M1 to a sixth transistor M6. In this configuration, the first terminal of the first transistor M1 is connected to the first power supply VDD, the second terminal of the first transistor M1 is connected to the first terminal of the third transistor M3, the gate of the first transistor M1 is connected to the second timing control terminal c2, the second terminal of the third transistor M3 is connected to the third node N3, the gate of the third transistor M3 is connected to the second node N2, the first terminal of the second transistor M2 is connected to the second power supply VEE, the second terminal of the second transistor M2 is connected to the first terminal of the fourth transistor M4, the gate of the second transistor M2 is connected to the first timing control terminal c1, the second terminal of the fourth transistor M4 is connected to the first node N1, the gate of the fourth transistor M4 is connected to the second node N2, the first terminal of the fifth transistor M5 is connected to the first power supply VDD, the second terminal of the fifth transistor M5 is connected to the signal output terminal Eout, the gate of the fifth transistor M5 is connected to the third node N3, the first terminal of the sixth transistor M6 is connected to the second power supply VEE, the second terminal of the sixth transistor M6 is connected to the signal output terminal Eout, the gate of the sixth transistor M6 is connected to the first node N1, and the signal input terminal is the second node N2.

[0066] In this embodiment, the light-emitting driving unit further includes a first capacitor C1, the first terminal of which is connected to the first power supply VDD, and the second terminal is connected to the third node N3.

[0067] In this embodiment, the first transistor M1, the second transistor M2, the third transistor M3, and the fifth transistor M5 are all P-type TFTs, and the fourth transistor M4 and the sixth transistor M6 are N-type TFTs. The control terminal of the P-type TFT transistor is the gate, with its first terminal being the source and its second terminal being the drain, or vice versa. The on-state level of the P-type TFT transistor is low, and its off-state level is high. The control terminal of the N-type TFT transistor is the gate, with its first terminal being the source and its second terminal being the drain, or vice versa. The on-state level of the N-type TFT transistor is high, and its off-state level is low.

[0068] In some embodiments of the present invention, reference is made to Figures 1 to 4 , Figure 4 The waveforms of each stage of two cycles during the operation of the light-emitting driving unit of the present invention are specifically shown, with the t1 to t5 processes within one cycle marked. During these stages, the output signal of the signal output terminal Eout of the aforementioned light-emitting driving unit completes one process from set to reset. The following is in conjunction with... Figure 4 waveform diagram and Figure 3 The circuit diagram is used to analyze the relationship between the input and output of the light-emitting driving unit in the above five processes:

[0069] In this embodiment, refer to Figure 3 and Figure 4 During process t1, the starting pulse signal STE or the signal input terminal IN is input at a low potential, the third transistor M3 is turned on, and the fourth transistor M4 is turned off. When the second timing control signal line CKE2 is low, the first transistor M1 is turned on, the first power supply VDD is written to the first node N1, causing the fifth transistor M5 to be turned off and the sixth transistor M6 to be turned on, and the signal output terminal Eout outputs a low potential.

[0070] In this embodiment, refer to Figure 3 and Figure 4 During process t2, the starting pulse signal STE or the signal input terminal IN is at a high potential, the third transistor M3 is turned off, and the fourth transistor M4 is turned on. When the first timing control signal line CKE1 is at a low potential, the second transistor M2 turns on, the second power supply VEE is written to the first node N1, causing the sixth transistor M6 to turn off and the fifth transistor M5 to turn on, and the signal output terminal Eout outputs a high potential.

[0071] In this embodiment, refer to Figure 3 and Figure 4 During process t3, the starting pulse signal STE or the signal input terminal IN is at a high potential, the third transistor M3 is turned off, and the fourth transistor M4 is turned on. Whenever the first timing control signal line CKE1 is at a low potential, the second power supply VEE is written to the first node N1, causing the signal output terminal Eout to output a high potential. Since the third transistor M3 is always in the off state, the first power supply VDD cannot be written to the first node N1 when the second timing control signal line CKE2 is at a low potential, so the signal output terminal Eout always outputs a high potential.

[0072] In this embodiment, refer to Figure 3 and Figure 4 During process t4, the initial pulse signal STE or the signal input terminal IN is at a low potential, the third transistor M3 is turned on, the fourth transistor M4 is turned off, the second timing control signal line CKE2 is at a low potential, the first transistor M1 is turned on, the first power supply VDD is written to the first node N1 to turn off the fifth transistor M5, the sixth transistor M6 is turned on, and the signal output terminal Eout outputs a low potential.

[0073] In this embodiment, refer to Figure 3 and Figure 4 During process t5, the initial pulse signal STE or the signal input terminal IN is at a low potential, the third transistor M3 is always on, the fourth transistor M4 is always off, and the signal output terminal Eout is always at a low potential.

[0074] In this embodiment, after process t5, the light-emitting driving unit will start displaying the next frame by inputting a high potential at the starting pulse signal STE or the signal input terminal IN, and then re-enter the next round of process t1.

[0075] In this embodiment, the previous stage light-emitting driving unit simultaneously outputs the light-emitting driving signal through the signal output terminal Eout to the signal input terminal IN of the next stage light-emitting driving unit as the start pulse signal STE of the next stage light-emitting driving unit. Simultaneously, the first timing control signal line CKE1 and the second timing control signal line CKE2 of the next stage are swapped. For example... Figure 4 As shown, Eout1 is the waveform of the current light-emitting driving unit, and Eout2 is the waveform of the next-level light-emitting driving unit. Because the last-level light-emitting driving unit does not have a next level, the output light-emitting driving signal is only input to the pixel circuit of that row.

[0076] In this embodiment, the light-emitting driving circuit of the present invention provides a novel light-emitting driving circuit with an N-type TFT transistor, achieving a smooth transition of the output signal when switching between high and low levels, eliminating the stepped pull-down phenomenon. This circuit design optimizes the transistor's turn-on speed, significantly reducing the circuit's response time, thereby improving the display effect and response speed of the display panel. Furthermore, by simplifying the timing control signal lines and the use of transistors, the present invention reduces the number of components in the light-emitting driving circuit, effectively reducing the bezel width of the display panel to align with the development trend of narrow-bezel display panels.

[0077] Based on the same inventive concept, embodiments of the present invention also provide a display device, including the display panel 10 described above in the embodiments of the present invention. This display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Implementation of this display device can refer to the embodiments of the display panel 10 described above; repeated technical solutions and effects will not be repeated here.

[0078] In summary, the light-emitting driving circuit and display panel of this invention, by providing a novel light-emitting driving circuit, achieve a smooth transition of the output signal during high-low level switching, eliminating the stepped pull-down phenomenon. This improvement significantly optimizes the display effect and response speed of the display panel, substantially enhancing the user experience. Simultaneously, by optimizing the transistor turn-on speed, this invention significantly reduces the circuit response time, improving the display panel's display performance. Furthermore, by simplifying the timing control signal lines and the use of transistors, this invention reduces the number of components in the light-emitting driving circuit, thereby effectively lowering manufacturing costs. Simultaneously, the reduction in the number of components also helps to narrow the bezel width of the display panel, meeting the current market demand for narrow-bezel display panels and enhancing the competitiveness of the display panel.

[0079] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A light-emitting driving circuit, characterized in that, It includes a multi-level light-emitting driving unit, wherein the light-emitting driving unit includes: A first transistor, wherein the first terminal of the first transistor is connected to a first power supply, the second terminal of the first transistor is connected to the first terminal of a third transistor, and the gate of the first transistor is connected to a second timing control terminal; The second terminal of the third transistor is connected to the third node, and the gate of the third transistor is connected to the signal input terminal through the second node; The second transistor has its first terminal connected to a second power supply, its second terminal connected to the first terminal of a fourth transistor, and its gate connected to a first timing control terminal. The second terminal of the fourth transistor is connected to the first node, and the gate of the fourth transistor is connected to the signal input terminal through the second node; The fifth transistor has its first terminal connected to the first power supply, its second terminal connected to the signal output terminal, and its gate connected to the third node. The sixth transistor has its first terminal connected to the second power supply, its second terminal connected to the signal output terminal, and its gate connected to the first node. A first capacitor, the first terminal of which is connected to the first power source, and the second terminal of which is connected to the third node.

2. The light-emitting driving circuit according to claim 1, characterized in that, It also includes a timing controller, which includes a first timing control signal line and a second timing control signal line.

3. The light-emitting driving circuit according to claim 2, characterized in that, The first timing control signal line is used to output a first timing control signal; the second timing control signal line is used to output a second timing control signal.

4. The light-emitting driving circuit according to claim 3, characterized in that, The first timing control signal and the second timing control signal are square wave signals with the same output frequency and a phase difference of 180°.

5. The light-emitting driving circuit according to claim 3, characterized in that, The light-emitting driving unit is used to perform delay processing on the signal received from the signal input terminal under the control of the first timing control signal and the second timing control signal, and the processed signal is output by the signal output terminal.

6. The light-emitting driving circuit according to claim 2, characterized in that, The previous stage light-emitting driving unit outputs a light-emitting driving signal to the next stage light-emitting driving unit, and the last stage light-emitting driving unit outputs a light-emitting driving signal.

7. The light-emitting driving circuit according to claim 6, characterized in that, In the odd-numbered stage light-emitting driving unit, the first timing control terminal is connected to the first timing control signal line, and the second timing control terminal is connected to the second timing control signal line.

8. The light-emitting driving circuit according to claim 7, characterized in that, In the even-numbered light-emitting driving unit, the first timing control terminal is connected to the second timing control signal line, and the second timing control terminal is connected to the first timing control signal line.

9. The light-emitting driving circuit according to claim 1, characterized in that, The first, second, third, and fifth transistors are P-type TFTs, and the fourth and sixth transistors are N-type TFTs.

10. A display panel, characterized in that, Includes the light-emitting driving circuit according to any one of claims 1 to 9.