Driving circuit and display panel

Abstract

The present application discloses a driving circuit and a display panel. The driving circuit includes: a sampling module connected to the control end of the driving transistor, a control module connected to the first end and the second end of the driving transistor respectively, and the control module is also connected to the anode of the light-emitting device. The control module responds to the control signal to form a first conduction state in which the first end of the driving transistor is connected to the light-emitting device or a second conduction state in which the second end of the driving transistor is connected to the light-emitting device; a switching module connected to the first end and the second end of the driving transistor, when the control module is in the first conduction state, the switching module controls the current that lights up the light-emitting device to flow from the second end of the driving transistor to the first end, and when the control module is in the second conduction state, the switching module controls the current that lights up the light-emitting device to flow from the first end of the driving transistor to the second end. The technical solution of the present application can effectively alleviate the abnormal accumulation of carriers in the channel region, so that the working state of the TFT device is more stable and the OLED lighting is accurately controlled.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a driving circuit and a display panel. Background Art

[0002] OLED (Organic Light-Emitting Diode) displays are usually driven by current. The lighting and shutting down of OLED are generally controlled by turning on or off the TFT (Thin Film Transistor) device. When the TFT device is working, a potential is applied to the gate area, thereby forming an external electric field in the channel area, attracting electrons in the substrate area to move to the channel area, and electrons with sufficient concentration gather to form a conduction band connecting the source and drain. However, when the TFT device is turned on unidirectionally for a long time, carriers accumulate abnormally in the channel area, causing the current-voltage curve to shift, resulting in changes in the working state of the TFT device, making it difficult to accurately control the lighting of the OLED. Summary of the invention

[0003] The purpose of the present application is to provide a driving circuit that can effectively alleviate the abnormal accumulation of carriers in the channel region, reduce the deviation of the current-voltage curve, make the working state of the TFT device more stable, and accurately control the lighting of the OLED.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to one aspect of an embodiment of the present application, the present application provides a driving circuit, the driving circuit comprising:

[0006] A driving transistor, the driving transistor is used to drive the light emitting device to light up;

[0007] A sampling module, the sampling module is connected to the control end of the driving transistor, the sampling module provides a driving signal to the control end of the driving transistor, and the control end of the driving transistor responds to the driving signal to conduct the first end and the second end of the driving transistor;

[0008] A control module, the control module is connected to the first end and the second end of the driving transistor respectively, the control module is also connected to the anode of the light-emitting device, and the control module responds to a control signal to form a first conductive state in which the first end of the driving transistor is connected to the light-emitting device or a second conductive state in which the second end of the driving transistor is connected to the light-emitting device;

[0009] A switching module, wherein the switching module is connected to the control module at a first end and a second end of the driving transistor respectively;

[0010] The switching module responds to a switching signal. When the control module is in the first conduction state, the switching module controls the current that lights up the light-emitting device to flow from the second end of the driving transistor to the first end. When the control module is in the second conduction state, the switching module controls the current that lights up the light-emitting device to flow from the first end of the driving transistor to the second end.

[0011] In one aspect, the switching module includes a first switching unit and a second switching unit, and the switching signal includes a first switching signal and a second switching signal;

[0012] The first end of the first switching unit is connected to the power supply end, the second end of the first switching unit is connected to the second end of the driving transistor, the third end of the first switching unit is connected to the first end of the driving transistor, and the fourth end of the first switching unit is connected to the anode of the light-emitting device. The first switching unit responds to the first switching signal, and the current provided by the power supply end flows from the second end of the driving transistor to the first end;

[0013] The first end of the second switching unit is connected to the power supply end, and the power supply end is used to provide current for lighting the light-emitting device. The second end of the second switching unit is connected to the first end of the driving transistor. The third end of the second switching unit is connected to the second end of the driving transistor. The fourth end of the second switching unit is connected to the anode of the light-emitting device. The second switching unit responds to the second switching signal, and the current provided by the power supply end flows from the first end of the driving transistor to the second end.

[0014] In one aspect, the first switching unit includes a first response switch and a second response switch, the first end of the first switching unit is the first end of the first response switch, the second end of the first switching unit is the second end of the first response switch, the third end of the first switching unit is the first end of the second response switch, the fourth end of the first switching unit is the second end of the second response switch, the first end of the first response switch is connected to the power supply end, the second end of the first response switch is connected to the second end of the driving transistor, the first end of the second response switch is connected to the first end of the driving transistor, and the second end of the second response switch is connected to the anode of the light-emitting device;

[0015] The second switching unit includes a third response switch and a fourth response switch, the first end of the second switching unit is the first end of the third response switch, the second end of the second switching unit is the second end of the second response switch, the third end of the second switching unit is the first end of the fourth response switch, the fourth end of the second switching unit is the second end of the fourth response switch, the first end of the third response switch is connected to the power supply end, the second end of the third response switch is connected to the first end of the driving transistor, the first end of the fourth response switch is connected to the second end of the driving transistor, and the second end of the fourth response switch is connected to the anode of the light emitting device;

[0016] The control ends of the first response switch and the second response switch both respond to the first switching signal, and the first end and the second end of the first response switch, and the first end and the second end of the second response switch are all turned on;

[0017] The control ends of the third response switch and the fourth response switch both respond to the second switching signal, and the first end and the second end of the third response switch, and the first end and the second end of the fourth response switch are all turned on.

[0018] In one aspect, the driving circuit includes a switching signal line, which is used to provide the switching signal, and the switching signal line is respectively connected to the control end of the first response switch, the control end of the second response switch, the control end of the third response switch and the control end of the fourth response switch.

[0019] In one aspect, the control module includes a first control unit and a second control unit;

[0020] One end of the first control unit is arranged between the first switching unit and the power supply end, and the other end of the first control unit is arranged between the first switching unit and the anode of the light emitting device;

[0021] One end of the second control unit is arranged between the second switching unit and the power supply end, and the other end of the second control unit is arranged between the second switching unit and the anode of the light emitting device;

[0022] The control signal includes a first control signal and a second control signal, the first control unit responds to the first control signal, the first control unit is turned on, and the control module is switched to the first on state;

[0023] The second control unit responds to the second control signal, the second control unit is turned on, and the control module is switched to the second on state.

[0024] In one aspect, the first control unit includes a fifth response switch and a sixth response switch, wherein a first end of the fifth response switch is connected to the power supply end, a second end of the fifth response switch is connected to the first switching unit, a first end of the sixth response switch is connected to the first switching unit, and a second end of the sixth response switch is connected to the anode of the light emitting device;

[0025] The second control unit includes a seventh response switch and an eighth response switch, wherein a first end of the seventh response switch is connected to the power supply end, a second end of the seventh response switch is connected to the second switching unit, a first end of the eighth response switch is connected to the second switching unit, and a second end of the eighth response switch is connected to the anode of the light-emitting device.

[0026] In one aspect, the driving circuit also includes a control circuit, which provides the control signal and is respectively connected to a control end of the fifth response switch, a control end of the sixth response switch, a control end of the seventh response switch, and a control end of the eighth response switch.

[0027] In one aspect, the sampling module includes a storage capacitor, a first sampling submodule and a second sampling submodule, the storage capacitor includes a first electrode plate and a second electrode plate arranged opposite to each other, the first electrode plate is connected to the power supply end, and the second electrode plate is connected to the control end of the driving transistor;

[0028] One end of the first sampling submodule is connected to the data line, and the other end of the first sampling submodule is connected to the control end of the driving transistor, and the first sampling submodule loads the data voltage provided by the data line to the second electrode plate;

[0029] One end of the second sampling submodule is connected to the data line, and the other end of the second sampling submodule is connected to the control end of the driving transistor. The second sampling submodule loads the data voltage provided by the data line to the second electrode plate.

[0030] In one aspect, the first sampling submodule includes a ninth response switch and a tenth response switch, and the sampling module also includes a thirteenth response switch and a fourteenth response switch, a first end of the ninth response switch is connected to the data line, a second end of the ninth response switch is connected to the first end of the thirteenth response switch, a second end of the thirteenth response switch is connected to the second end of the driving transistor, a first end of the fourteenth response switch is connected to the first end of the driving transistor, a second end of the fourteenth response switch is connected to the first end of the tenth response switch, a second end of the tenth response switch is connected to the control end of the driving transistor, the control end of the ninth response switch and the control end of the tenth response switch respond to the first switching signal, and the ninth response switch and the tenth response switch are turned on;

[0031] The second sampling submodule includes an eleventh response switch and a twelfth response switch;

[0032] The first end of the eleventh response switch is connected to the data line, the second end of the eleventh response switch is connected to the second end of the fourteenth response switch, the first end of the twelfth response switch is connected to the first end of the thirteenth response switch, the second end of the twelfth response switch is connected to the control end of the driving transistor, the control end of the eleventh response switch and the control end of the twelfth response switch respond to the second switching signal, and the eleventh response switch and the twelfth response switch are turned on;

[0033] The control end of the thirteenth response switch and the control end of the fourteenth response switch are connected to a first scan line, the first scan line provides a first scan signal, the control end of the thirteenth response switch and the control end of the fourteenth response switch respond to the first scan signal, and the thirteenth response switch and the fourteenth response switch are turned on.

[0034] In one aspect, the driving circuit also includes a fifteenth response switch, a first end of the fifteenth response switch receives a reset signal, a second end of the fifteenth response switch is connected to the control end of the driving transistor and the line between the sampling module, the control end of the fifteenth response switch is connected to a second scan line, the second scan line provides a second scan signal, the control end of the fifteenth response switch responds to the second scan signal, the fifteenth response switch is turned on, and the reset signal is loaded to the control end of the driving transistor.

[0035] In addition, in order to solve the above-mentioned problem, the present application also provides a display panel, which includes a light-emitting device and a driving circuit as described above, and the driving circuit is used to drive the light-emitting device to perform light-emitting display.

[0036] In the present application, the control module can switch between the first conduction state and the second conduction state. When the control module is in the first conduction state, that is, when the first end of the driving transistor is connected to the light-emitting device, the switching module controls the current of the driving transistor to flow from the second end to the first end, thereby the current flows to the light-emitting device through the first end of the driving transistor, so that the light-emitting device is lit. When the control module is in the second conduction state, that is, when the second end of the driving transistor is connected to the light-emitting device, the switching module controls the current of the driving transistor to flow from the first end to the second end, thereby the current flows to the light-emitting device through the second end of the driving transistor, and the light-emitting device can also be lit. As can be seen from the above, the control module can light up the light-emitting device in both the first conduction state and the second conduction state, and at the same time, the current flowing through the driving transistor is switched between the first end and the second end through the cooperation of the switching module, which reduces the situation of long-term unidirectional conduction, effectively alleviates the abnormal accumulation of carriers in the channel region, reduces the deviation of the current-voltage curve, makes the working state of the TFT device more stable, and accurately controls the lighting of the OLED.

[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 The schematic diagram shows the structure of the driving circuit in the present application.

[0040] Figure 2 The schematic diagram schematically shows a first sampling submodule, a first control unit and a first switching unit in the driving circuit of the present application.

[0041] Figure 3 The schematic diagram of the second sampling submodule, the second control unit and the second switching unit in the driving circuit of the present application is schematically shown.

[0042] Figure 4 The schematic diagram shows the charging of the first sampling submodule in the driving circuit of the present application and the initialization of the gate of the driving transistor.

[0043] Figure 5 The application is schematically shown Figure 4 Equivalent schematic diagram of the drive circuit.

[0044] Figure 6The schematic diagram of data writing of the first sampling submodule in the driving circuit of the present application is shown schematically.

[0045] Figure 7 The present application is schematically shown Figure 6 Equivalent schematic diagram of the drive circuit.

[0046] Figure 8 The schematic diagram schematically shows that the current in the driving circuit of the present application flows from the second end to the first end of the driving transistor.

[0047] Fig. 9 The present application is schematically shown Figure 8 Equivalent schematic diagram of the drive circuit.

[0048] Fig.10 The schematic diagram shows the charging of the second sampling submodule in the driving circuit of the present application and the initialization of the gate of the driving transistor.

[0049] Fig.11 The present application is schematically shown Fig.10 Equivalent schematic diagram of the drive circuit.

[0050] Fig.12 The data writing diagram of the second sampling submodule in the driving circuit of the present application is schematically shown.

[0051] Fig.13 The present application is schematically shown Fig.12 Equivalent schematic diagram of the drive circuit.

[0052] Fig.14 The schematic diagram schematically shows that the current in the driving circuit of the present application flows from the first end to the second end of the driving transistor.

[0053] Fig.15 The present application is schematically shown Fig.14 Equivalent schematic diagram of the drive circuit.

[0054] Fig.16 The structural diagram of the display panel of the present application is schematically shown.

[0055] The following are the descriptions of the reference numerals:

[0056] T0, driving transistor; 10, sampling module; 20, control module; 30, switching module; 40, light emitting device; 50, display panel; EM, control circuit; SW, switching signal line; Data, data line; Scan1, first scanning line; Scan2, second scanning line; VSS, ground line;

[0057] Cst, storage capacitor; 110, first sampling submodule; 120, second sampling submodule; 210, first control unit; 220, second control unit; 310, first switching unit; 320, second switching unit; 510, display area; 520, non-display area;

[0058] C1, first electrode plate; C2, second electrode plate; T1, first response switch; T2, second response switch; T3, third response switch; T4, fourth response switch; T5, fifth response switch; T6, sixth response switch; T7, seventh response switch; T8, eighth response switch; T9, ninth response switch; T10, tenth response switch; T11, eleventh response switch; T12, twelfth response switch; T13, thirteenth response switch; T14, fourteenth response switch; T15, fifteenth response switch. DETAILED DESCRIPTION

[0059] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0060] Embodiment 1

[0061] See also Figure 1 As shown, the present application provides a driving circuit, which includes: a driving transistor T0, a sampling module 10, a control module 20 and a switching module 30.

[0062] The driving transistor T0 is used to drive the light-emitting device 40 to light up; the driving transistor T0 usually refers to a TFT device, and the light-emitting device 40 usually refers to an OLED. The light-emitting device 40 can also be other structures that can emit light, for example, the light-emitting device 40 can also be a Mini-LED or a Micro-LED.

[0063] The sampling module 10 is connected to the control end of the driving transistor T0. The sampling module 10 provides a driving signal to the control end of the driving transistor T0. The control end of the driving transistor T0 responds to the driving signal to turn on the first end and the second end of the driving transistor T0. The control end of the driving transistor T0 usually refers to the gate, the first end of the driving transistor T0 usually refers to the source, and the second end of the driving transistor T0 usually refers to the drain. The driving transistor T0 can be a P-type MOS (Metal-Oxide-SemiconductorField-Effect Transistor) tube or an N-type MOS tube.

[0064] The control module 20 is connected to the first end and the second end of the driving transistor T0, respectively. The control module 20 is also connected to the anode of the light emitting device 40, and the cathode of the light emitting device 40 can be connected to the ground line VSS. The control module 20 responds to the control signal to form a first conductive state in which the first end of the driving transistor T0 is connected to the light emitting device 40 or a second conductive state in which the second end of the driving transistor T0 is connected to the light emitting device 40; that is, the control module 20 can select the first end of the driving transistor T0 to be connected to the light emitting device 40 or the second end of the driving transistor T0 to be connected to the light emitting device 40.

[0065] The switching module 30 is connected to the control module 20 at the first end and the second end of the driving transistor T0 respectively; it can be understood that one end of the switching module 30 is set between the first end of the driving transistor T0 and the control module 20, and the other end of the switching module 30 is set between the second end of the driving transistor T0 and the control module 20.

[0066] The switching module 30 responds to the switching signal. When the control module 20 is in the first on state, the switching module 30 controls the current that lights up the light-emitting device 40 to flow from the second end of the driving transistor T0 to the first end. When the control module 20 is in the second on state, the switching module 30 controls the current that lights up the light-emitting device 40 to flow from the first end of the driving transistor T0 to the second end.

[0067] It can be seen that the switching module 30 can respond to the switching signal to control the flow direction of the current on the driving transistor T0. Further, when the control module 20 is in the first on state, the switching module 30 controls the second end of the driving transistor T0 to have a high potential and the first end to have a low potential, so that the current flows from the second end of the driving transistor T0 to the first end. When the control module 20 is in the second on state, the switching module 30 controls the first end of the driving transistor T0 to have a high potential and the second end to have a low potential, so that the current flows from the first end of the driving transistor T0 to the second end.

[0068] In this embodiment, the control module 20 can switch between a first conduction state and a second conduction state. When the control module 20 is in the first conduction state, that is, when the first end of the driving transistor T0 is connected to the light-emitting device 40, the switching module 30 controls the current of the driving transistor T0 to flow from the second end to the first end, thereby the current flows to the light-emitting device 40 through the first end of the driving transistor T0, so that the light-emitting device 40 is lit. When the control module 20 is in the second conduction state, that is, when the second end of the driving transistor T0 is connected to the light-emitting device 40, the switching module 30 controls the current of the driving transistor T0 to flow from the first end to the second end, thereby the current flows to the light-emitting device 40 through the second end of the driving transistor T0, and the light-emitting device 40 can also be lit. As can be seen from the above, the control module 20 can light up the light-emitting device 40 in the first conduction state and the second conduction state. At the same time, the current flowing through the driving transistor T0 is switched between the first end and the second end through the cooperation of the switching module 30, thereby reducing the long-term unidirectional conduction, effectively alleviating the abnormal accumulation of carriers in the channel region, reducing the current-voltage curve offset, making the working state of the TFT device more stable, and accurately controlling the lighting of the OLED.

[0069] See also Figure 2 and Figure 3 As shown, in one embodiment of the present application, the switching module 30 includes a first switching unit 310 and a second switching unit 320, and the switching signal includes a first switching signal and a second switching signal; the first end of the first switching unit 310 is connected to the power supply end, the second end of the first switching unit 310 is connected to the second end of the driving transistor T0, the third end of the first switching unit 310 is connected to the first end of the driving transistor T0, and the fourth end of the first switching unit 310 is connected to the anode of the light-emitting device 40. The first switching unit 310 responds to the first switching signal, and the current provided by the power supply end flows from the second end of the driving transistor T0 to the first end.

[0070] When the control module 20 is in the first conduction state, the first switching signal acts on the first switching unit 310, the first end of the first switching unit 310 and the second end of the first switching unit 310 are turned on, so that the second end of the driving transistor T0 and the power supply end are connected, the third end of the first switching unit 310 and the fourth end of the first switching unit 310 are turned on, so that the first end of the driving transistor T0 and the light-emitting device 40 are connected, and the current provided by the power supply end can flow from the second end of the driving transistor T0 to the first end of the driving transistor T0, and flow to the light-emitting device 40.

[0071] The first end of the second switching unit 320 is connected to the power supply end, which is used to provide current for lighting the light-emitting device 40. The second end of the second switching unit 320 is connected to the first end of the driving transistor T0. The third end of the second switching unit 320 is connected to the second end of the driving transistor T0. The fourth end of the second switching unit 320 is connected to the anode of the light-emitting device 40. The second switching unit 320 responds to the second switching signal, and the current provided by the power supply end flows from the first end of the driving transistor T0 to the second end.

[0072] When the control module 20 is in the second conduction state, the second switching signal acts on the second switching unit 320, and the first end of the second switching unit 320 and the second end of the second switching unit 320 are turned on, so that the first end of the driving transistor T0 is connected to the power supply end. The third end of the second switching unit 320 and the fourth end of the second switching unit 320 are turned on, so that the second end of the driving transistor T0 is connected to the light emitting device 40. The current provided by the power supply end can flow from the first end of the driving transistor T0 to the second end of the driving transistor T0, and then to the light emitting device 40.

[0073] It can be seen that the first switching unit 310 and the second switching unit 320 play their roles respectively, and respectively control the first end of the driving transistor T0 or the second end of the driving transistor T0 to turn on the light emitting device 40 .

[0074] In an embodiment of the present application, the first switching unit 310 includes a first response switch T1 and a second response switch T2, the first end of the first switching unit 310 is the first end of the first response switch T1, the second end of the first switching unit 310 is the second end of the first response switch T1, the third end of the first switching unit 310 is the first end of the second response switch T2, and the fourth end of the first switching unit 310 is the second end of the second response switch T2. The first end of the first response switch T1 is connected to the power supply end, the second end of the first response switch T1 is connected to the second end of the driving transistor T0, the first end of the second response switch T2 is connected to the first end of the driving transistor T0, and the second end of the second response switch T2 is connected to the anode of the light emitting device 40; the control ends of the first response switch T1 and the second response switch T2 both respond to the first switching signal, and the first end and the second end of the first response switch T1, as well as the first end and the second end of the second response switch T2 are all turned on.

[0075] Under the action of the first switching signal, the first end of the first response switch T1 and the second end of the first response switch T1 are turned on, so that the power supply end is connected to the second end of the driving transistor T0; under the action of the first switching signal, the first end of the second response switch T2 and the second end of the second response switch T2 are turned on, so that the first end of the driving transistor T0 is connected to the anode of the light emitting device 40. The current provided by the power supply end flows through the first response switch T1, the driving transistor T0, the second response switch T2 and the light emitting device 40 in sequence, and the light emitting device 40 is lit.

[0076] The second switching unit 320 includes a third response switch T3 and a fourth response switch T4, wherein the first end of the second switching unit 320 is the first end of the third response switch T3, the second end of the second switching unit 320 is the second end of the second response switch T2, the third end of the second switching unit 320 is the first end of the fourth response switch T4, and the fourth end of the second switching unit 320 is the second end of the fourth response switch T4. The first end of the third response switch T3 is connected to the power supply end, the second end of the third response switch T3 is connected to the first end of the driving transistor T0, the first end of the fourth response switch T4 is connected to the second end of the driving transistor T0, and the second end of the fourth response switch T4 is connected to the anode of the light emitting device 40; the control ends of the third response switch T3 and the fourth response switch T4 both respond to the second switching signal, and the first end and the second end of the third response switch T3, and the first end and the second end of the fourth response switch T4 are all turned on.

[0077] Under the action of the second switching signal, the first and second ends of the third response switch T3 are turned on, so that the power supply end is connected to the first end of the driving transistor T0; under the action of the second switching signal, the first and second ends of the fourth response switch T4 are turned on, so that the second end of the driving transistor T0 is connected to the anode of the light emitting device 40. The current provided by the power supply end flows through the third response switch T3, the driving transistor T0, the fourth response switch T4 and the light emitting device 40 in sequence, and lights up the light emitting device 40.

[0078] In one embodiment of the present application, in order to simplify the circuit, the driving circuit includes a switching signal line SW, the switching signal line SW is used to provide a switching signal, and the switching signal line SW is respectively connected to the control end of the first response switch T1, the control end of the second response switch T2, the control end of the third response switch T3, and the control end of the fourth response switch T4. The switching signal line SW can provide the first switching signal and the second switching signal in time-sharing, and one of the first switching signal and the second switching signal is a high potential signal, and the other is a low potential signal. The first response switch T1 and the second response switch T2 are of the same model, and the signals of the third response switch T3 and the fourth response switch T4 are the same.

[0079] For example, the first response switch T1 and the second response switch T2 are P-type MOS tubes, the first switching signal is a low potential, the low potential signal acts on the control ends of the first response switch T1 and the second response switch T2, and the first response switch T1 and the second response switch T2 are turned on respectively. The third response switch T3 and the fourth response switch T4 are N-type MOS tubes, the second switching signal is a high potential, the high potential signal acts on the control ends of the third response switch T3 and the fourth response switch T4, and the third response switch T3 and the fourth response switch T4 are turned on respectively.

[0080] Alternatively, the first response switch T1 and the second response switch T2 are N-type MOS transistors, the first switching signal is a high potential, the high potential signal acts on the control ends of the first response switch T1 and the second response switch T2, and the first response switch T1 and the second response switch T2 are respectively turned on. The third response switch T3 and the fourth response switch T4 are P-type MOS transistors, the second switching signal is a low potential, the low potential signal acts on the control ends of the third response switch T3 and the fourth response switch T4, and the third response switch T3 and the fourth response switch T4 are respectively turned on.

[0081] The first switching signal and the second switching signal are alternately output in the switching signal line SW. The first switching signal and the second switching signal are alternately output in a certain cycle, so that the current flowing through the driving transistor T0 flows alternately between the first end and the second end.

[0082] See again Figure 2 and Figure 3 As shown, in one embodiment of the present application, the control module 20 includes a first control unit 210 and a second control unit 220. The control signal includes a first control signal and a second control signal.

[0083] One end of the first control unit 210 is arranged between the first switching unit 310 and the power supply end, and the other end of the first control unit 210 is arranged between the first switching unit 310 and the anode of the light-emitting device 40; the first control unit 210 responds to the first control signal, the first control unit 210 is turned on, and the control module 20 is switched to the first conduction state; through the conduction of the first control unit 210, the power supply end and the first switching unit 310 are connected, and the first switching unit 310 and the anode of the light-emitting device 40 are connected. It can be seen that the on and off of the current flowing through the first switching unit 310 can be controlled by turning on or off the first control unit 210.

[0084] One end of the second control unit 220 is arranged between the second switching unit 320 and the power supply end, and the other end of the second control unit 220 is arranged between the second switching unit 320 and the anode of the light-emitting device 40; the second control unit 220 responds to the second control signal, the second control unit 220 is turned on, and the control module 20 is switched to the second conduction state. When the second control unit 220 is turned on, the second switching unit 320 and the power supply end are turned on, and the second switching unit 320 and the anode of the light-emitting device 40 are turned on. The on or off of the second control unit 220 can control the on and off of the current flowing through the second switching unit 320.

[0085] The first control unit 210 and the second control unit 220 work alternately, cooperating with the first switching unit 310 and the second switching unit 320. For example, when the first switching unit 310 is required to work, the first control unit 210 is turned on. When the second switching unit 320 is in effect, the second switching unit 320 is turned on.

[0086] In an embodiment of the present application, the first control unit 210 includes a fifth response switch T5 and a sixth response switch T6, wherein the first end of the fifth response switch T5 is connected to the power supply end, the second end of the fifth response switch T5 is connected to the first switching unit 310, the first end of the sixth response switch T6 is connected to the first switching unit 310, and the second end of the sixth response switch T6 is connected to the anode of the light emitting device 40; the first control signal is loaded to the control end of the fifth response switch T5, and the first end and the second end of the fifth response switch T5 are turned on, so that the power supply end is connected to the first switching unit 310. The first control signal is loaded to the control end of the sixth response switch T6, and the first end and the second end of the sixth response switch T6 are turned on, so that the first switching unit 310 is connected to the anode of the light emitting device 40. At this time, by turning on the fifth response switch T5 and the sixth response switch T6, it is ensured that the first switching unit 310 is connected to the power supply end and the anode of the light emitting device 40 respectively, and it is ensured that the current of the power supply end can pass through the fifth response switch T5, the driving transistor T0, the first switching unit 310 and the sixth response switch T6, and flow to the light emitting device 40.

[0087] The second control unit 220 includes a seventh response switch T7 and an eighth response switch T8, wherein a first end of the seventh response switch T7 is connected to the power supply end, a second end of the seventh response switch T7 is connected to the second switching unit 320, a first end of the eighth response switch T8 is connected to the second switching unit 320, and a second end of the eighth response switch T8 is connected to the anode of the light emitting device 40. A second control signal is loaded to the control end of the seventh response switch T7, and a first end and a second end of the seventh response switch T7 are turned on, so that the power supply end is connected to the second switching unit 320. A second control signal is loaded to the control end of the eighth response switch T8, and a first end and a second end of the eighth response switch T8 are turned on, so that the second switching unit 320 is connected to the anode of the light emitting device 40. At this time, by turning on the seventh response switch T7 and the eighth response switch T8, it is ensured that the second switching unit 320 is connected to the power supply end and the anode of the light emitting device 40 respectively, so that the current of the power supply end can pass through the seventh response switch T7, the driving transistor T0, the second switching unit 320 and the eighth response switch T8, and flow to the light emitting device 40.

[0088] In one embodiment of the present application, in order to simplify the circuit, the driving circuit also includes a control circuit EM, which provides a control signal. The control circuit EM is respectively connected to the control end of the fifth response switch T5, the control end of the sixth response switch T6, the control end of the seventh response switch T7 and the control end of the eighth response switch T8.

[0089] Among them, the first control signal and the second control signal are respectively provided through the same control line EM, one of the first control signal and the second control signal is a high potential and the other is a low potential. The fifth response switch T5 and the sixth response switch T6 are of the same model, and the seventh response switch T7 and the eighth response switch T8 are of the same model. The switching signal provided by the control line EM is a clock signal, and the switching signal can be used to adjust the period of the circuit through the PWM (Pulse Width Modulation) frequency.

[0090] For example, the fifth response switch T5 and the sixth response switch T6 are P-type MOS tubes, the first control signal is a low potential, the low potential signal acts on the control ends of the fifth response switch T5 and the sixth response switch T6, and the fifth response switch T5 and the sixth response switch T6 are turned on respectively. The seventh response switch T7 and the eighth response switch T8 are N-type MOS tubes, the second control signal is a high potential, the high potential signal acts on the control ends of the seventh response switch T7 and the eighth response switch T8, and the seventh response switch T7 and the eighth response switch T8 are turned on respectively.

[0091] For another example, the fifth response switch T5 and the sixth response switch T6 are N-type MOS tubes, the first control signal is a high potential, the high potential signal acts on the control ends of the fifth response switch T5 and the sixth response switch T6, and the fifth response switch T5 and the sixth response switch T6 are respectively turned on. The seventh response switch T7 and the eighth response switch T8 are P-type MOS tubes, the second control signal is a low potential, the low potential signal acts on the control ends of the seventh response switch T7 and the eighth response switch T8, and the seventh response switch T7 and the eighth response switch T8 are respectively turned on.

[0092] In addition, the fifth response switch T5, the sixth response switch T6, the seventh response switch T7 and the eighth response switch T8 may be of the same model, and may be N-type MOS tubes or P-type MOS tubes. At this time, the first control signal and the second control signal are also the same. When the fifth response switch T5, the sixth response switch T6, the seventh response switch T7 and the eighth response switch T8 are all turned on, the first switching unit can be controlled to be turned on and the second switching unit can be turned off, so that even if the seventh response switch T7 and the eighth response switch T8 are turned on, the flow direction of the current will not be affected. Similarly, when the first switching unit is turned off and the second switching unit is turned on, even if the fifth response switch T5 and the sixth response switch T6 are turned on, the flow direction of the current will not be affected.

[0093] In one embodiment of the present application, the sampling module 10 includes a storage capacitor Cst, a first sampling submodule 110 and a second sampling submodule 120, and the storage capacitor includes a first electrode plate C1 and a second electrode plate C2 arranged opposite to each other, the first electrode plate C1 and the second electrode plate C2 are arranged opposite to each other, the first electrode plate C1 is connected to the power supply end, and the second electrode plate C2 is connected to the control end of the driving transistor T0. The power supply voltage provided by the power supply end is loaded on the first electrode plate C1 of the storage capacitor, and the charging of the storage capacitor by the first sampling submodule 110 can maintain the conductive state of the driving transistor T0 for a certain period of time. The charging of the storage capacitor can also be completed by the second sampling submodule 120.

[0094] One end of the first sampling submodule 110 is connected to the data line Data, and the other end of the first sampling submodule 110 is connected to the control end of the driving transistor T0, that is, the other end of the first sampling submodule 110 is connected to the second electrode plate C2, and the first sampling submodule 110 loads the data voltage provided by the data line Data to the second electrode plate C2; ​​through the first sampling submodule 110, the data voltage provided by the data line Data is loaded onto the second electrode plate C2, so that the voltage of the storage capacitor is superimposed on the data voltage on the basis of the power supply voltage. The first sampling submodule 110 cooperates with the first switching unit 310 to complete the charging of the storage capacitor.

[0095] One end of the second sampling submodule 120 is connected to the data line Data, and the other end of the second sampling submodule 120 is connected to the control end of the driving transistor T0, that is, the other end of the second sampling submodule 120 is connected to the second electrode plate C2, and the second sampling submodule 120 loads the data voltage provided by the data line Data to the second electrode plate C2. Through the second sampling submodule 120, the data voltage provided by the data line Data is loaded onto the second electrode plate C2, so that the voltage of the storage capacitor is superimposed on the data voltage on the basis of the power supply voltage. The second sampling submodule 120 cooperates with the second switching unit 320 to complete the charging of the storage capacitor.

[0096] In an embodiment of the present application, the first sampling submodule 110 includes a ninth response switch T9 and a tenth response switch T10, and the sampling module 10 also includes a thirteenth response switch T13 and a fourteenth response switch T14. The first end of the ninth response switch T9 is connected to the data line Data, the second end of the ninth response switch T9 is connected to the first end of the thirteenth response switch T13, the second end of the thirteenth response switch T13 is connected to the second end of the driving transistor T0, the first end of the fourteenth response switch T14 is connected to the first end of the driving transistor T0, the second end of the fourteenth response switch T14 is connected to the first end of the tenth response switch T10, and the second end of the tenth response switch T10 is connected to the control end of the driving transistor T0. The control end of the ninth response switch T9 and the control end of the tenth response switch T10 respond to the first switching signal, and the ninth response switch T9 and the tenth response switch T10 are turned on.

[0097] The second sampling submodule 120 includes an eleventh response switch T11 and a twelfth response switch T12; a first end of the eleventh response switch T11 is connected to the data line Data, a second end of the eleventh response switch T11 is connected to the second end of the fourteenth response switch T14, a first end of the twelfth response switch T12 is connected to the first end of the thirteenth response switch T13, a second end of the twelfth response switch T12 is connected to the control end of the driving transistor T0, the control end of the eleventh response switch T11 and the control end of the twelfth response switch T12 respond to the second switching signal, and the eleventh response switch T11 and the twelfth response switch T12 are turned on; the control end of the thirteenth response switch T13 and the control end of the fourteenth response switch T14 are connected to the first scan line Scan1, the first scan line Scan1 provides a first scan signal, the control end of the thirteenth response switch T13 and the control end of the fourteenth response switch T14 respond to the first scan signal, and the thirteenth response switch T13 and the fourteenth response switch T14 are turned on.

[0098] The models of the thirteenth response switch T13 and the fourteenth response switch T14 may be the same or different; if they are the same, they may be connected to the same scan line, and if they are different, they may be connected to different scan lines.

[0099] When charging through the first sampling submodule 110, the ninth response switch T9, the tenth response switch T10, the thirteenth response switch T13 and the fourteenth response switch T14 are all turned on, and the data voltage provided by the data line Data passes through the ninth response switch T9, the thirteenth response switch T13, the driving transistor T0, the fourteenth response switch T14 and the tenth response switch T10 in sequence, and the data voltage is loaded onto the second electrode plate C2.

[0100] When charging through the second sampling submodule 120, the eleventh response switch T11, the twelfth response switch T12, the thirteenth response switch T13 and the fourteenth response switch T14 are all turned on, and the data voltage provided by the data line Data passes through the eleventh response switch T11, the fourteenth response switch T14, the driving transistor T0, the thirteenth response switch T13 and the twelfth response switch T12 in sequence, and the data voltage is loaded onto the second electrode plate C2.

[0101] In an embodiment of the present application, the driving circuit also includes a fifteenth response switch T15, a first end of the fifteenth response switch T15 receives a reset signal, a second end of the fifteenth response switch T15 is connected to the control end of the driving transistor T0 and the line between the sampling module 10, the control end of the fifteenth response switch T15 is connected to the second scan line Scan2, the second scan line Scan2 provides a second scan signal, the control end of the fifteenth response switch T15 responds to the second scan signal, the fifteenth response switch T15 is turned on, and the reset signal is loaded to the control end of the driving transistor T0.

[0102] In the above embodiments, the control end of the response switch generally refers to the gate, the first end refers to the source, and the second end refers to the drain; the first end may be the drain and the second end may be the source.

[0103] In order to more clearly describe the working process of the driving circuit, on the basis of the above embodiment, the first response switch T1, the second response switch T2, the ninth response switch T9 and the tenth response switch T10 are N-type MOS tubes, the third response switch T3, the fourth response switch T4, the eleventh response switch T11, the twelfth response switch T12, the thirteenth response switch T13 and the fourteenth response switch T14 are P-type MOS tubes, the fifth response switch T5, the sixth response switch T6, the seventh response switch T7 and the eighth response switch T8 are P-type MOS tubes, the fifteenth response switch T15 is a P-type MOS tube, the control end of the thirteenth response switch T13 and the control end of the fourteenth response switch T14 are connected to the same point, and the working process of the driving circuit is as follows:

[0104] When the current flows from the second end to the first end of the driving transistor T0:

[0105] See also Figure 4and Figure 5 As shown, in the initialization stage, the switching signal provided by the switching signal line SW is a high potential, that is, the first switching signal is a high potential, the first response switch T1, the second response switch T2, the ninth response switch T9 and the tenth response switch T10 remain turned on, and the third response switch T3, the fourth response switch T4, the eleventh response switch T11 and the twelfth response switch T12 remain turned off. The first scan line Scan1 provides a high potential, and the second scan line Scan2 provides a low potential, thereby, the thirteenth response switch T13 and the fourteenth response switch T14 are turned off, and the fifteenth response switch T15 is in a conducting state. The reset signal provided by the reset circuit is loaded to the control end of the driving transistor T0 through the fifteenth response switch T15, and the gate of the driving transistor T0 is reset. At the same time, the first electrode plate C1 of the storage capacitor is charged through the power supply end to ensure that the driving transistor T0 remains in a conducting state in the next cycle, that is, the driving transistor T0 is kept turned on during the sampling and writing phase.

[0106] See also Figure 6 and Figure 7 As shown, in the sampling and writing stage, the first switching signal is high potential, the first scan line Scan1 provides a low potential, the second scan line Scan2 provides a high potential, and the control signal is high potential, that is, the first control signal is high potential. At this time, the first response switch T1, the second response switch T2, the ninth response switch T9, the tenth response switch T10, the thirteenth response switch T13, and the fourteenth response switch T14 are in the on state. The data voltage provided by the data line Data is loaded to the gate of the driving transistor T0 through the ninth response switch T9, the thirteenth response switch T13, the driving transistor T0, the fourteenth response switch T14, and the tenth response switch T10, that is, loaded to the second electrode plate C2, completing the data writing and controlling the opening degree of the driving transistor T0.

[0107] See also Figure 8 and Fig. 9 As shown, in the light-emitting stage, the first scan line Scan1 provides a high potential, the second scan line Scan2 provides a high potential, the control signal provided by the control line EM is a low potential, and the switching signal line SW provides a high potential. The first response switch T1, the second response switch T2, the fifth response switch T5, the sixth response switch T6, the seventh response switch T7, the eighth response switch T8, the ninth response switch T9, the tenth response switch T10 and the driving transistor T0 are in the on state. At this time, the current flowing through the driving transistor T0 flows from the second end to the first end, that is, from point B to point A.

[0108] When the current flows from the first end to the second end of the driving transistor T0:

[0109] See also Fig.10 and Fig.11As shown, in the initialization stage, the switching signal provided by the switching signal line SW is a low potential, that is, the second switching signal is a low potential, the first response switch T1, the second response switch T2, the ninth response switch T9 and the tenth response switch T10 remain disconnected, and the third response switch T3, the fourth response switch T4, the eleventh response switch T11 and the twelfth response switch T12 remain on. The first scan line Scan1 provides a high potential, and the second scan line Scan2 provides a low potential, thereby, the thirteenth response switch T13 and the fourteenth response switch T14 are disconnected, and the fifteenth response switch T15 is in a conducting state. The reset signal provided by the reset circuit is loaded to the control end of the driving transistor T0 through the fifteenth response switch T15, and the gate of the driving transistor T0 is reset. At the same time, the first electrode plate C1 of the storage capacitor is charged through the power supply end to ensure that the driving transistor T0 remains in a conducting state in the next cycle, that is, the sampling and writing stage maintains the driving transistor T0 conductive.

[0110] See also Fig.12 and Fig.13 As shown, in the sampling and writing stage, the second switching signal is low potential, the first scanning line Scan1 provides a low potential, the second scanning line Scan2 provides a high potential, and the control signal is high potential, that is, the second control signal is high potential. At this time, the third response switch T3, the fourth response switch T4, the eleventh response switch T11, the twelfth response switch T12, the thirteenth response switch T13, and the fourteenth response switch T14 are in the on state. The data voltage provided by the data line Data is sequentially loaded to the gate of the driving transistor T0 through the eleventh response switch T11, the fourteenth response switch T14, the driving transistor T0, the thirteenth response switch T13, and the twelfth response switch T12, that is, loaded to the second electrode plate C2, completing the data writing and controlling the opening degree of the driving transistor T0.

[0111] See also Fig.14 and Fig.15 As shown, in the light-emitting stage, the first scan line Scan1 provides a high potential, the second scan line Scan2 provides a high potential, the control signal provided by the control line EM is a low potential, and the switching signal line SW provides a low potential. The third response switch T3, the fourth response switch T4, the fifth response switch T5, the sixth response switch T6, the seventh response switch T7, the eighth response switch T8, the eleventh response switch T11, the twelfth response switch T12 and the driving transistor T0 are in the on state. At this time, the current flowing through the driving transistor T0 flows from the first end to the second end, that is, from point A to point B.

[0112] Embodiment 2

[0113] See also Fig.16As shown, the present application also provides a display panel 50, and the display panel 50 includes a light-emitting device 40 as described above and a driving circuit. The display panel 50 includes a display area 510 and a non-display area 520 surrounding the display area 510, the light-emitting device 40 is arranged in the display area 510, and most of the circuits of the driving circuit are arranged in the non-display area 520, so as to reduce the impact on the picture of the display area 510. The anode connected to the light-emitting device 40 is arranged in the display area 510, and the driving circuit extends from the non-display area 520 to the display area 510 and is connected to the anode of the light-emitting device 40. The light-emitting device 40 may refer to a group of light-emitting units, and the display panel includes multiple groups of light-emitting units, and each group of light-emitting units is connected to a driving circuit. The light-emitting device 40 may also refer to all the light-emitting units on the display panel, so that one driving circuit can complete the driving of all the light-emitting units.

[0114] Other specific implementations and beneficial effects of the display panel refer to the above-mentioned driving circuit solution, which will not be described in detail here.

[0115] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

[0116] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A driving circuit, characterized in that: The driving circuit comprises: A driving transistor, the driving transistor is used to drive the light emitting device to light up; A sampling module, the sampling module is connected to the control end of the driving transistor, the sampling module provides a driving signal to the control end of the driving transistor, and the control end of the driving transistor responds to the driving signal to conduct the first end and the second end of the driving transistor; A control module, the control module is connected to the first end and the second end of the driving transistor respectively, the control module is also connected to the anode of the light-emitting device, and the control module responds to a control signal to form a first conductive state in which the first end of the driving transistor is connected to the light-emitting device or a second conductive state in which the second end of the driving transistor is connected to the light-emitting device; A switching module, wherein the switching module is connected to the control module at a first end and a second end of the driving transistor respectively; The switching module responds to a switching signal. When the control module is in the first conduction state, the switching module controls the current that lights up the light-emitting device to flow from the second end of the driving transistor to the first end. When the control module is in the second conduction state, the switching module controls the current that lights up the light-emitting device to flow from the first end of the driving transistor to the second end.

2. The driving circuit according to claim 1, characterized in that: The switching module includes a first switching unit and a second switching unit, and the switching signal includes a first switching signal and a second switching signal; The first end of the first switching unit is connected to the power supply end, the second end of the first switching unit is connected to the second end of the driving transistor, the third end of the first switching unit is connected to the first end of the driving transistor, and the fourth end of the first switching unit is connected to the anode of the light-emitting device. The first switching unit responds to the first switching signal, and the current provided by the power supply end flows from the second end of the driving transistor to the first end; The first end of the second switching unit is connected to the power supply end, and the power supply end is used to provide current for lighting the light-emitting device. The second end of the second switching unit is connected to the first end of the driving transistor. The third end of the second switching unit is connected to the second end of the driving transistor. The fourth end of the second switching unit is connected to the anode of the light-emitting device. The second switching unit responds to the second switching signal, and the current provided by the power supply end flows from the first end of the driving transistor to the second end.

3. The driving circuit according to claim 2, characterized in that: The first switching unit includes a first response switch and a second response switch, the first end of the first switching unit is the first end of the first response switch, the second end of the first switching unit is the second end of the first response switch, the third end of the first switching unit is the first end of the second response switch, the fourth end of the first switching unit is the second end of the second response switch, the first end of the first response switch is connected to the power supply end, the second end of the first response switch is connected to the second end of the driving transistor, the first end of the second response switch is connected to the first end of the driving transistor, and the second end of the second response switch is connected to the anode of the light emitting device; The second switching unit includes a third response switch and a fourth response switch, the first end of the second switching unit is the first end of the third response switch, the second end of the second switching unit is the second end of the second response switch, the third end of the second switching unit is the first end of the fourth response switch, the fourth end of the second switching unit is the second end of the fourth response switch, the first end of the third response switch is connected to the power supply end, the second end of the third response switch is connected to the first end of the driving transistor, the first end of the fourth response switch is connected to the second end of the driving transistor, and the second end of the fourth response switch is connected to the anode of the light emitting device; The control ends of the first response switch and the second response switch both respond to the first switching signal, and the first end and the second end of the first response switch, and the first end and the second end of the second response switch are all turned on; The control ends of the third response switch and the fourth response switch both respond to the second switching signal, and the first end and the second end of the third response switch, and the first end and the second end of the fourth response switch are all turned on.

4. The driving circuit according to claim 3, characterized in that: The driving circuit includes a switching signal line, which is used to provide the switching signal, and the switching signal line is respectively connected to the control end of the first response switch, the control end of the second response switch, the control end of the third response switch and the control end of the fourth response switch.

5. The driving circuit according to claim 2, characterized in that: The control module includes a first control unit and a second control unit; One end of the first control unit is arranged between the first switching unit and the power supply end, and the other end of the first control unit is arranged between the first switching unit and the anode of the light emitting device; One end of the second control unit is arranged between the second switching unit and the power supply end, and the other end of the second control unit is arranged between the second switching unit and the anode of the light emitting device; The control signal includes a first control signal and a second control signal, the first control unit responds to the first control signal, the first control unit is turned on, and the control module is switched to the first on state; The second control unit responds to the second control signal, the second control unit is turned on, and the control module is switched to the second on state.

6. The driving circuit according to claim 5, characterized in that: The first control unit includes a fifth response switch and a sixth response switch, wherein a first end of the fifth response switch is connected to the power supply end, a second end of the fifth response switch is connected to the first switching unit, a first end of the sixth response switch is connected to the first switching unit, and a second end of the sixth response switch is connected to the anode of the light emitting device; The second control unit includes a seventh response switch and an eighth response switch, wherein a first end of the seventh response switch is connected to the power supply end, a second end of the seventh response switch is connected to the second switching unit, a first end of the eighth response switch is connected to the second switching unit, and a second end of the eighth response switch is connected to the anode of the light-emitting device.

7. The driving circuit according to claim 6, characterized in that: The driving circuit also includes a control circuit, which provides the control signal and is respectively connected to a control end of the fifth response switch, a control end of the sixth response switch, a control end of the seventh response switch, and a control end of the eighth response switch.

8. The driving circuit according to claim 2, characterized in that: The sampling module includes a storage capacitor, a first sampling submodule and a second sampling submodule, the storage capacitor includes a first electrode plate and a second electrode plate arranged opposite to each other, the first electrode plate is connected to the power supply end, and the second electrode plate is connected to the control end of the driving transistor; One end of the first sampling submodule is connected to the data line, and the other end of the first sampling submodule is connected to the control end of the driving transistor, and the first sampling submodule loads the data voltage provided by the data line to the second electrode plate; One end of the second sampling submodule is connected to the data line, and the other end of the second sampling submodule is connected to the control end of the driving transistor. The second sampling submodule loads the data voltage provided by the data line to the second electrode plate.

9. The driving circuit according to claim 8, characterized in that: The first sampling submodule includes a ninth response switch and a tenth response switch, and the sampling module also includes a thirteenth response switch and a fourteenth response switch, the first end of the ninth response switch is connected to the data line, the second end of the ninth response switch is connected to the first end of the thirteenth response switch, the second end of the thirteenth response switch is connected to the second end of the driving transistor, the first end of the fourteenth response switch is connected to the first end of the driving transistor, the second end of the fourteenth response switch is connected to the first end of the tenth response switch, and the second end of the tenth response switch is connected to the control end of the driving transistor, the control end of the ninth response switch and the control end of the tenth response switch respond to the first switching signal, and the ninth response switch and the tenth response switch are turned on; The second sampling submodule includes an eleventh response switch and a twelfth response switch; The first end of the eleventh response switch is connected to the data line, the second end of the eleventh response switch is connected to the second end of the fourteenth response switch, the first end of the twelfth response switch is connected to the first end of the thirteenth response switch, the second end of the twelfth response switch is connected to the control end of the driving transistor, the control end of the eleventh response switch and the control end of the twelfth response switch respond to the second switching signal, and the eleventh response switch and the twelfth response switch are turned on; The control end of the thirteenth response switch and the control end of the fourteenth response switch are connected to a first scan line, the first scan line provides a first scan signal, the control end of the thirteenth response switch and the control end of the fourteenth response switch respond to the first scan signal, and the thirteenth response switch and the fourteenth response switch are turned on.

10. The driving circuit according to any one of claims 1 to 9, characterized in that: The driving circuit also includes a fifteenth response switch, a first end of the fifteenth response switch receives a reset signal, a second end of the fifteenth response switch is connected to the control end of the driving transistor and the line between the sampling module, the control end of the fifteenth response switch is connected to a second scan line, the second scan line provides a second scan signal, the control end of the fifteenth response switch responds to the second scan signal, the fifteenth response switch is turned on, and the reset signal is loaded to the control end of the driving transistor.

11. A display panel, characterized in that: The display panel comprises a light emitting device and a driving circuit as claimed in any one of claims 1 to 10, wherein the driving circuit is used to drive the light emitting device to perform light emitting display.

Images