Level conversion circuit, driving module and display device

Abstract

The application belongs to the display field and particularly relates to a level conversion circuit, a driving module and a display device. The level conversion circuit comprises a signal input end, a signal output end, a first output unit, a first control unit, a second output unit and a second control unit. The first output unit is connected with a first power supply and the signal output end and is used for controlling the first power supply and the signal output end to be turned on or turned off. The first control unit is used for controlling the first output unit to work. The second output unit is connected with a ground end and the signal output end and is used for controlling the ground end and the signal output end to be turned on or turned off. The second control unit controls the second output unit to work according to a signal of the signal input end. The signal of the signal input end controls the first power supply voltage and the ground end voltage to be alternately output to the signal output end, the level conversion of the signal of the signal input end being implemented to be boosted or stepped down, and the problem that the alternating current power supply voltage cannot meet the demand of the driving voltage is solved.

Description

Technical Field

[0001] The present application relates to the field of display, and specifically to a level conversion circuit, a driving module and a display device. Background Art

[0002] Liquid Crystal Display (TFT-LCD) typically operates at a voltage of around 5V, but with the advancement of display technology, some displays require higher voltages. For example, the color-developing particles in electronic paper (ePaper) require a higher voltage of 12V or higher.

[0003] In the prior art, a microcontroller unit (MCU) or a field programmable gate array (FPGA) serving as an AC power source typically outputs a voltage of 3.3V, which cannot meet the demand for a higher driving voltage. Summary of the Invention

[0004] The purpose of the present application is to provide a level conversion circuit, a driving module and a display device to solve the problem that the AC power supply voltage cannot meet the driving voltage requirement.

[0005] In order to achieve the above-mentioned object, the present application provides a level conversion circuit, including a signal input terminal and a signal output terminal, and the level conversion circuit further includes:

[0006] a first output unit, connected to the first power supply and the signal output terminal, for controlling the first power supply and the signal output terminal to be turned on or off;

[0007] a first control unit, connected to the first power supply, the ground terminal, the signal input terminal and the first output unit, and configured to control the operation of the first output unit;

[0008] a second output unit, connected to the ground terminal and the signal output terminal, and configured to control the ground terminal and the signal output terminal to be turned on or off;

[0009] A second control unit is connected to a second power supply, the ground terminal, the signal input terminal and the second output unit. The signal from the signal input terminal controls one of the second power supply signal and the ground terminal signal to be output to the second output unit, so as to control the operation of the second output unit.

[0010] Optionally, the voltage of the first power supply is greater than the voltage of the ground terminal, the ground terminal includes a ground terminal, the first output unit includes a first P-type transistor, a control terminal of the first P-type transistor is connected to the first control unit, a first terminal of the first P-type transistor is connected to the first power supply, and a second terminal of the first P-type transistor is connected to the signal output terminal;

[0011] The second output unit includes a first N-type transistor, a control end of the first N-type transistor is connected to the second control unit, a first end of the first N-type transistor is connected to the signal output end, and a second end of the first N-type transistor is connected to the ground end.

[0012] Optionally, the first control unit includes a transistor, a first resistor and a second resistor, the control end of the transistor is connected to the signal input end, the first end of the transistor is connected to the first power supply through the first resistor, the second end of the transistor is connected to the ground end through the second resistor, and the control end of the first P-type transistor is connected to the first node between the transistor and the first resistor.

[0013] Optionally, the first control unit also includes a second N-type transistor, the control end of the second N-type transistor is connected to the signal input end, the first end of the second N-type transistor is connected to the first node, and the second end of the second N-type transistor is connected to the first end of the transistor through the second node.

[0014] Optionally, the first control unit further includes a second P-type transistor, the control end of the second P-type transistor is connected to the signal output end, the first end of the second P-type transistor is connected to the first power supply, and the second end of the second P-type transistor is connected to the second node.

[0015] Optionally, the first control unit includes a second N-type transistor and a first resistor, the control end of the second N-type transistor is connected to the signal input end, the first end of the second N-type transistor is connected to the first power supply through the first resistor, the second end of the second N-type transistor is connected to the ground end, and the control end of the first P-type transistor is connected to the first node between the second N-type transistor and the first resistor.

[0016] Optionally, the second control unit includes an inverter connected to the signal input terminal and the control terminal of the first N-type transistor.

[0017] Optionally, the inverter comprises a third P-type transistor and a third N-type transistor, a control end of the third P-type transistor is connected with the signal input end, a first end of the third P-type transistor is connected with the second power supply, a second end of the third P-type transistor is connected with the control end of the first N-type transistor, and a voltage of the second power supply is greater than a voltage of the ground end.

[0018] A control end of the third N-type transistor is connected with the signal input end, a first end of the third N-type transistor is connected with the control end of the first N-type transistor, and a second end of the third N-type transistor is connected with the ground end.

[0019] The application further provides a driving module comprising a source driving circuit, a gate driving circuit and the level conversion circuit, and at least one of the source driving circuit and the gate driving circuit is connected with the level conversion circuit.

[0020] The application further provides a display device comprising:

[0021] A display panel;

[0022] The driving module is connected with the display panel.

[0023] The level conversion circuit, the driving module and the display device disclosed by the application have the following beneficial effects:

[0024] In the application, the level conversion circuit comprises a signal input end, a signal output end, a first output unit, a first control unit, a second output unit and a second control unit, the first output unit is connected with a first power supply and the signal output end, and is used for controlling the first power supply and the signal output end to be turned on or turned off, the first control unit is used for controlling the first output unit to work, the second output unit is connected with a ground end and the signal output end, and is used for controlling the ground end and the signal output end to be turned on or turned off, and the second control unit controls the second output unit to work according to a signal of the signal input end. The signal of the signal input end controls the first power supply voltage and the ground end voltage to be alternately output to the signal output end, realizes level conversion of the signal of the signal input end to be boosted or stepped down, and solves the problem that an alternating current power supply voltage cannot meet the demand of a driving voltage.

[0025] Other characteristics and advantages of the application will become apparent from the following detailed description, or will be learned by practice of the application.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. It is to be understood that the drawings are only schematic, and that they do not purport to be to scale with respect to one another. The embodiments will be described with reference to the drawings in which:

[0028] Figure 1 is a structural schematic diagram of a level conversion circuit in Embodiment One of the present application.

[0029] Figure 2 is an output high level schematic diagram of the level conversion circuit in Embodiment One of the present application.

[0030] Figure 3 is an output low level schematic diagram of the level conversion circuit in Embodiment One of the present application.

[0031] Figure 4 is an output and output signal waveform schematic diagram of the level conversion circuit in Embodiment One of the present application.

[0032] Figure 5 is a structural schematic diagram of a driving module in Embodiment Two of the present application.

[0033] Figure 6 is a structural schematic diagram of a display device in Embodiment Three of the present application.

[0034] Legend of reference signs:

[0035] 100, level conversion circuit;

[0036] 110, signal input end; 120, signal output end;

[0037] 130, first output unit; 131, first P-type transistor;

[0038] 140, first control unit; 141, triode; 142, first resistor; 143, second resistor; 144, second N-type transistor; 145, second P-type transistor;

[0039] 150, second output unit; 151, first N-type transistor;

[0040] 160, second control unit; 161, third P-type transistor; 162, third N-type transistor;

[0041] 171, first power supply; 172, ground end; 173, second power supply;

[0042] 200, source driving circuit; 300, gate driving circuit;

[0043] 10. Driver module; 20. Display panel. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0045] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0046] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0047] Example 1

[0048] See also Figures 1 to 3 As shown, in this embodiment, the level conversion circuit 100 includes a signal input terminal 110, a signal output terminal 120, a first output unit 130, a first control unit 140, a second output unit 150, and a second control unit 160. The signal input terminal 110 is used to connect to an AC power source such as a microcontroller unit or a field programmable gate array. The AC power source outputs an AC voltage signal of, for example, 0 to 3.3V.

[0049] The first output unit 130 is connected to the first power supply 171 and the signal output terminal 120. The first output unit 130 is used to control whether the first power supply 171 and the signal output terminal 120 are connected. For example, if the voltage of the first power supply 171 is 12V, when the first output unit 130 controls the first power supply 171 and the signal output terminal 120 to be connected, the signal output terminal 120 outputs a voltage of 12V. The first control unit 140 is connected to the first power supply 171, the ground terminal 172, the signal input terminal 110, and the first output unit 130. The first control unit 140 controls the operation of the first output unit 130 based on the signal from the signal input terminal 110, that is, controls whether the first power supply 171 and the signal output terminal 120 are connected.

[0050] The second output unit 150 is connected with the ground terminal 172 and the signal output terminal 120, and is used to control the ground terminal 172 and the signal output terminal 120 to be turned on or turned off. For example, when the voltage of the ground terminal 172 is 0 and the second output unit 150 controls the ground terminal 172 and the signal output terminal 120 to be turned on, the voltage output by the signal output terminal 120 is 0. The second control unit 160 is connected with the second power supply 173, the ground terminal 172, the signal input terminal 110 and the second output unit 150. The signal input terminal 110 controls one of the signals of the second power supply 173 and the ground terminal 172 to be output to the second output unit 150, so as to control the second output unit 150 to work, that is, to control the ground terminal 172 and the signal output terminal 120 to be turned on or turned off. That is, the alternating voltage signal input by the signal input terminal 110 controls the signal output terminal 120 to output a high level of 12V or a low level of 0V, so as to realize the level conversion of the signal input by the signal input terminal 110.

[0051] It should be understood that the voltage of the first power supply 171 is 12V and the voltage of the ground terminal 172 is 0, which are only exemplary descriptions. The voltages of the first power supply 171 and the ground terminal 172 can be increased or decreased according to the actual needs of the implementation of the level conversion, so as to meet the actual needs of the step-up or step-down level conversion.

[0052] In the embodiment, the level conversion circuit 100 comprises a signal input terminal 110, a signal output terminal 120, a first output unit 130, a first control unit 140, a second output unit 150 and a second control unit 160. The first output unit 130 is connected with the first power supply 171 and the signal output terminal 120, and is used to control the first power supply 171 and the signal output terminal 120 to be turned on or turned off. The first control unit 140 is connected with the first power supply 171, the ground terminal 172, the signal input terminal 110 and the first output unit 130, and is used to control the first output unit 130 to work. The second output unit 150 is connected with the ground terminal 172 and the signal output terminal 120, and is used to control the ground terminal 172 and the signal output terminal 120 to be turned on or turned off. The second control unit 160 is connected with the second power supply 173, the ground terminal 172, the signal input terminal 110 and the second output unit 150. The signal input terminal 110 controls one of the signals of the second power supply 173 and the ground terminal 172 to be output to the second output unit 150, so as to control the second output unit 150 to work. The signal input terminal 110 of the present application controls the voltage of the first power supply 171 and the voltage of the ground terminal 172 to be alternately output to the signal output terminal 120, so as to realize the step-up or step-down level conversion of the signal input by the signal input terminal 110, and solve the problem that the voltage of the alternating power supply cannot meet the needs of the driving voltage.

[0053] Referring to Figures 1 to 3As shown, the first output unit 130 includes a first P-type transistor 131, a control terminal of the first P-type transistor 131 is connected to the first control unit 140, a first terminal of the first P-type transistor 131 is connected to the first power supply 171, and a second terminal of the first P-type transistor 131 is connected to the signal output terminal 120. The second output unit 150 includes a first N-type transistor 151, a control terminal of the first N-type transistor 151 is connected to the second control unit 160, a first terminal of the first N-type transistor 151 is connected to the signal output terminal 120, and a second terminal of the first N-type transistor 151 is connected to the ground terminal 172.

[0054] The first P-type transistor 131 and the first N-type transistor 151 are not turned on at the same time. When the first P-type transistor 131 is turned on and the first N-type transistor 151 is turned off, the signal output terminal 120 outputs a high level of 12V. When the first N-type transistor 151 is turned on and the first P-type transistor 131 is turned off, the signal output terminal 120 outputs a low level of 0V. The high and low levels are output alternately, thereby realizing the level conversion of the signal of the signal input terminal 110.

[0055] See also Figures 1 to 3 As shown, the first control unit 140 includes a transistor 141, a first resistor 142, and a second resistor 143. The control terminal of the transistor 141 is connected to the signal input terminal 110, the first terminal of the transistor 141 is connected to the first power supply 171 through the first resistor 142, the second terminal of the transistor 141 is connected to the ground terminal 172 through the second resistor 143, and the control terminal of the first P-type transistor 131 is connected to the first node A between the transistor 141 and the first resistor 142.

[0056] When the signal input terminal 110 inputs a voltage of 3.3V, the transistor 141 is turned on, and the current flowing through the second resistor 143 is R2 is the resistance value of the second resistor 143. The first resistor 142 and the second resistor 143 are connected in series. The current flowing through the first resistor 142 is equal to the current flowing through the second resistor 143. The voltage of the control terminal (first node A) of the first P-type transistor 131 is R1 is the resistance value of the first resistor 142, V1 is the voltage of the first power supply 171, and the specific value of the control terminal voltage of the first P-type transistor 131 can be adjusted by the resistance values ​​of the first resistor 142 and the second resistor 143. The gate-source voltage difference of the first P-type transistor 131 is less than 0, the first P-type transistor 131 is turned on, and the signal output terminal 120 outputs a high level of 12V.

[0057] When a voltage of 0V is input to the signal input terminal 110, the transistor 141 is turned off, and the first power supply 171 pulls up the control terminal of the first P-type transistor 131 to 12V through the first resistor 142. The first P-type transistor 131 is turned off to avoid a short circuit caused by the first P-type transistor 131 and the first N-type transistor 151 being turned on at the same time.

[0058] See also Figures 1 to 3 As shown, the first control unit 140 also includes a second N-type transistor 144, the control end of the second N-type transistor 144 is connected to the signal input end 110, the first end of the second N-type transistor 144 is connected to the first node A, and the second end of the second N-type transistor 144 is connected to the first end of the transistor 141 through the second node B.

[0059] When the signal input terminal 110 inputs a voltage of 0V, the transistor 141 and the second N-type transistor 144 are turned off simultaneously to prevent the transistor 141 from leaking and causing the first P-type transistor 131 to turn on, thereby affecting the signal output terminal 120 to output a low-level signal of 0V.

[0060] See also Figures 1 to 3 As shown, the first control unit 140 also includes a second P-type transistor 145, the control end of the second P-type transistor 145 is connected to the signal output end 120, the first end of the second P-type transistor 145 is connected to the first power supply 171, and the second end of the second P-type transistor 145 is connected to the second node B.

[0061] When a voltage of 3.3V is input to the signal input terminal 110, the transistor 141 and the second N-type transistor 144 are turned on at the same time, the voltage of the first node A controls the first P-type transistor 131 to turn on, the signal output terminal 120 outputs a high level of 12V, and the voltage of the signal output terminal 120 is written into the control terminal of the second P-type transistor 145. The second P-type transistor 145 is turned off to prevent the first power supply 171 from leaking to the second N-type transistor 144 and preventing it from turning on.

[0062] When a 0V voltage is input to the signal input terminal 110, the transistor 141 and the second N-type transistor 144 are turned off at the same time, and the first power supply 171 pulls up the control terminal of the first P-type transistor 131 to 12V through the first resistor 142. The first P-type transistor 131 is turned off to prevent the first P-type transistor 131 and the first N-type transistor 151 from being turned on at the same time and causing a short circuit. The voltage of the signal output terminal 120 is written to the control terminal of the second P-type transistor 145, and the second P-type transistor 145 is turned on. The first power supply 171 writes a 12V voltage to the second node B, so that the second N-type transistor 144 is more completely turned off to reduce leakage.

[0063] In some embodiments, the first control unit 140 comprises a second N-type transistor 144 and a first resistor 142, a control terminal of the second N-type transistor 144 is connected with the signal input terminal 110, a first terminal of the second N-type transistor 144 is connected with the first power supply 171 through the first resistor 142, a second terminal of the second N-type transistor 144 is connected with the ground terminal 172, and a control terminal of the first P-type transistor 131 is connected with a first node A between the second N-type transistor 144 and the first resistor 142.

[0064] The second N-type transistor 144 is used to control the first resistor 142 to be connected or disconnected with the ground terminal 172, and the level conversion circuit 100 has a simpler structure.

[0065] Referring to Figures 1 to 3 As shown, the second control unit 160 comprises an inverter, and the inverter is connected with the signal input terminal 110 and a control terminal of the first N-type transistor 151.

[0066] When the signal input terminal 110 inputs a 3.3V voltage, the first N-type transistor 151 needs to be turned off to disconnect the ground terminal 172 and the signal output terminal 120, and when the signal input terminal 110 inputs a 0V voltage, the first N-type transistor 151 needs to be turned on to connect the ground terminal 172 and the signal output terminal 120. By connecting the signal input terminal 110 and the control terminal of the first N-type transistor 151 through the inverter, the first N-type transistor 151 can be controlled by the signal input terminal 110, and no additional control signal is needed.

[0067] Referring to Figures 1 to 3 As shown, the inverter comprises a third P-type transistor 161 and a third N-type transistor 162, a control terminal of the third P-type transistor 161 is connected with the signal input terminal 110, a first terminal of the third P-type transistor 161 is connected with a second power supply 173, and a second terminal of the third P-type transistor 161 is connected with the control terminal of the first N-type transistor 151. The second power supply 173 is used to turn on the first N-type transistor 151, and the voltage of the second power supply 173 is greater than the voltage of the ground terminal 172, for example, the voltage of the second power supply 173 is 3.3V.

[0068] A control terminal of the third N-type transistor 162 is connected with the signal input terminal 110, a first terminal of the third N-type transistor 162 is connected with the control terminal of the first N-type transistor 151, and a second terminal of the third N-type transistor 162 is connected with the ground terminal 172.

[0069] When the signal input terminal 110 inputs a 3.3V voltage, the third P-type transistor 161 is turned off and the third N-type transistor 162 is turned on, the voltage of the ground terminal 172 is written to the control terminal of the first N-type transistor 151, the first N-type transistor 151 is turned off, and the connection between the ground terminal 172 and the signal output terminal 120 is disconnected.

[0070] When 0V is input to the signal input terminal 110 , the third P-type transistor 161 is turned on and the third N-type transistor 162 is turned off. The second power supply 173 writes to the control terminal of the first N-type transistor 151 , and the first N-type transistor 151 is turned on, connecting the ground terminal 172 to the signal output terminal 120 .

[0071] In summary, see Figure 2 and Figure 3 As shown ( Figure 2 and Figure 3 (“×” indicates that the transistor is off), when the level conversion circuit 100 is working:

[0072] When a high level is input to the signal input terminal 110, the transistor 141 and the second N-type transistor 144 are simultaneously turned on, and current flows from the first power supply 171 through the first resistor 142, the second N-type transistor 144, the transistor 141, and the second resistor 143 to the ground terminal 172. The voltage at the first node A between the second N-type transistor 144 and the first resistor 142 controls the first P-type transistor 131 to turn on, thereby connecting the first power supply 171 to the signal output terminal 120. The voltage at the signal output terminal 120 is written to the control terminal of the second P-type transistor 145, and the second P-type transistor 145 is turned off to prevent the first power supply 171 from leaking to the second N-type transistor 144 and preventing it from turning on. The third P-type transistor 161 is turned off and the third N-type transistor 162 is turned on. The voltage at the ground terminal 172 is written to the control terminal of the first N-type transistor 151, and the first N-type transistor 151 is turned off, disconnecting the ground terminal 172 from the signal output terminal 120, so that the signal output terminal 120 stably outputs the voltage of the first power supply 171.

[0073] When a low level is input to the signal input terminal 110, the third P-type transistor 161 is turned on and the third N-type transistor 162 is turned off, the second power supply 173 is written to the control terminal of the first N-type transistor 151, the first N-type transistor 151 is turned on, and the connection between the ground terminal 172 and the signal output terminal 120 is connected; the transistor 141 and the second N-type transistor 144 are turned off at the same time, the first power supply 171 pulls up the control terminal of the first P-type transistor 131 to the voltage of the first power supply 171 through the first resistor 142, and the first P-type transistor 131 is turned off to avoid the first P-type transistor 131 and the first N-type transistor 151 being turned on at the same time and causing a short circuit; the voltage of the signal output terminal 120 is written to the control terminal of the second P-type transistor 145, the second P-type transistor 145 is turned on, and the first power supply 171 writes a 12V voltage to the second node B, so that the second N-type transistor 144 is more completely turned off to reduce leakage.

[0074] For example, the signal at the signal input terminal 110 is an AC voltage signal of 0 to 3.3V, the first power supply 171 is a 12V DC power supply, the signal at the signal output terminal 120 is an AC voltage signal of 0 to 12V, and the signal at the signal input terminal 110 and the signal at the signal output terminal 120 have the same phase. Figure 4 As shown, the level conversion of the signal output from the signal input terminal 110 is achieved.

[0075] Example 2

[0076] This application also provides a drive module, see Figure 5 As shown, the driving module includes the level shifter circuit 100 disclosed in the first embodiment, the source driver circuit 200, and the gate driver circuit 300. At least one of the source driver circuit 200 and the gate driver circuit 300 is connected to the level shifter circuit 100. The level shifter circuit 100 can convert the AC voltage signal output by the microcontroller unit or the field programmable gate array and output it to the source driver circuit 200 and / or the gate driver circuit 300 to meet the demand for higher driving voltage.

[0077] In this embodiment, the driving module 10 includes a level conversion circuit 100, which includes a signal input terminal 110, a signal output terminal 120, a first output unit 130, a first control unit 140, a second output unit 150, and a second control unit 160. The first output unit 130 is connected to the first power supply 171 and the signal output terminal 120, and is used to control the first power supply 171 and the signal output terminal 120 to be turned on or off. The first control unit 140 is connected to the first power supply 171, the ground terminal 172, the signal input terminal 110, and the first output unit 150. Element 130, the first control unit 140 is used to control the operation of the first output unit 130, the second output unit 150 is connected to the ground terminal 172 and the signal output terminal 120, and is used to control whether the ground terminal 172 and the signal output terminal 120 are connected or disconnected. The second control unit 160 is connected to the second power supply 173, the ground terminal 172, the signal input terminal 110 and the second output unit 150. The signal of the signal input terminal 110 controls the output of one of the second power supply 173 signal and the ground terminal 172 signal to the second output unit 150, and is used to control the operation of the second output unit 150. The signal of the signal input terminal 110 of the present application controls the voltage of the first power supply 171 and the voltage of the ground terminal 172 to be alternately output to the signal output terminal 120, thereby realizing level conversion of the signal of the signal input terminal 110 for stepping up or down, and solving the problem that the AC power supply voltage cannot meet the driving voltage requirement.

[0078] Example 3

[0079] This application also provides a display device, see Figure 6As shown, the display device includes the driving module 10 and the display panel 20 disclosed in the second embodiment, and the driving module 10 is connected to the display panel 20 .

[0080] The driving module 10 includes a level conversion circuit 100, a source driving circuit 200 and a gate driving circuit 300. The level conversion circuit 100 converts the AC voltage signal output by the microcontroller unit or the field programmable gate array to meet the requirements of higher driving voltage. The driving module 10 can be used to drive a display panel 20 with a higher driving voltage.

[0081] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0082] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0083] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0084] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent application.

Claims

1. A level conversion circuit, comprising a signal input terminal and a signal output terminal, characterized in that: The level conversion circuit further includes: a first output unit, connected to the first power supply and the signal output terminal, for controlling the first power supply and the signal output terminal to be turned on or off; a first control unit, connected to the first power supply, the ground terminal, the signal input terminal and the first output unit, and configured to control the operation of the first output unit; a second output unit, connected to the ground terminal and the signal output terminal, and configured to control the ground terminal and the signal output terminal to be turned on or off; a second control unit, connected to a second power supply, the ground terminal, the signal input terminal, and the second output unit, wherein a signal from the signal input terminal controls one of the second power supply signal and the ground terminal signal to be output to the second output unit, so as to control the operation of the second output unit; The voltage of the first power supply is greater than the voltage of the ground terminal, the ground terminal includes a ground terminal, the first output unit includes a first P-type transistor, a control terminal of the first P-type transistor is connected to the first control unit, a first terminal of the first P-type transistor is connected to the first power supply, and a second terminal of the first P-type transistor is connected to the signal output terminal; The second output unit includes a first N-type transistor, a control terminal of the first N-type transistor is connected to the second control unit, a first terminal of the first N-type transistor is connected to the signal output terminal, and a second terminal of the first N-type transistor is connected to the ground terminal; The first control unit includes a transistor, a first resistor, a second resistor, a second N-type transistor, and a second P-type transistor, the control end of the transistor being connected to the signal input end, the first end of the transistor being connected to the first power supply through the first resistor, the second end of the transistor being connected to the ground end through the second resistor, and the control end of the first P-type transistor being connected to a first node between the transistor and the first resistor; The control terminal of the second N-type transistor is connected to the signal input terminal, the first terminal of the second N-type transistor is connected to the first node, and the second terminal of the second N-type transistor is connected to the first terminal of the triode through the second node; The control end of the second P-type transistor is connected to the signal output end, the first end of the second P-type transistor is connected to the first power supply, and the second end of the second P-type transistor is connected to the second node.

2. The level conversion circuit according to claim 1, wherein: The second control unit includes an inverter connected to the signal input terminal and the control terminal of the first N-type transistor.

3. The level conversion circuit according to claim 2, wherein: The inverter includes a third P-type transistor and a third N-type transistor, wherein the control terminal of the third P-type transistor is connected to the signal input terminal, the first terminal of the third P-type transistor is connected to the second power supply, the second terminal of the third P-type transistor is connected to the control terminal of the first N-type transistor, and the voltage of the second power supply is greater than the voltage of the ground terminal; The control end of the third N-type transistor is connected to the signal input end, the first end of the third N-type transistor is connected to the control end of the first N-type transistor, and the second end of the third N-type transistor is connected to the ground end.

4. A driving module, characterized in that: The device comprises a source driving circuit, a gate driving circuit, and the level conversion circuit according to any one of claims 1 to 3, wherein at least one of the source driving circuit and the gate driving circuit is connected to the level conversion circuit.

5. A display device, characterized in that: include: Display panel; The driving module according to claim 4, wherein the driving module is connected to the display panel.

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