Drive circuit, display panel, and display device

Abstract

A driving circuit, a display panel, and a display device are provided. The first light-emitting control subcircuit (110) and the second light-emitting control subcircuit (120) of the driving circuit (100) are both used to drive the light-emitting unit (140) to emit light. The calculation subcircuit (160) compares the voltage at the electrical connection point between the storage element (150) and the calculation subcircuit (160) with a reference voltage to obtain an output signal. The first data input subcircuit (180), after being turned on in response to the output signal, transmits a first data signal to the first light-emitting control subcircuit (110) and the second light-emitting control subcircuit (120) to drive the light-emitting unit (140) to emit light. The second data input subcircuit (190), after being turned on in response to the output signal, transmits a second data signal to the first light-emitting control subcircuit (110) and the second light-emitting control subcircuit (120) to drive the light-emitting unit (140) to emit light. This switches the DC drive to AC drive, effectively improving the display life of the TFT.

Description

[Technical Field]

[0001] Reference to related applications This application claims priority to Chinese Patent Application No. 202211248818.6, filed on October 12, 2022, with the title of the invention being "Drive Circuit, Display Panel, and Display Device," and all contents of that application are incorporated into this application by reference.

[0002] This application relates to the field of display technology, and more particularly to a drive circuit, a display panel equipped with the drive circuit, and a display device equipped with the display panel. [Background technology]

[0003] Currently, prolonged operation of display screens shortens the lifespan of thin-film field-effect transistors (TFTs) due to the long-term driving of DC data signals, which affects the product's lifespan.

[0004] Therefore, how to solve the problem of shortened TFT lifespan due to long-term operation of DC data signals is a problem that those skilled in the art should address as soon as possible. [Overview of the project]

[0005] In view of the shortcomings of the above-mentioned prior art, the object of this application is to provide a drive circuit that improves the lifespan of a product by solving the problem of shortened lifespan of a TFT due to long-term driving of a DC data signal.

[0006] To solve the above technical problems, in a first embodiment, the present invention provides a drive circuit. The drive circuit includes a first light emission control subcircuit, a second light emission control subcircuit, a light emission unit, a storage element, a calculation subcircuit, a first data input subcircuit, and a second data input subcircuit. Both the first and second light emission control subcircuits are electrically connected to the light emission unit, the storage element, the calculation subcircuit, the first data input subcircuit, the second data input subcircuit, and a first power supply voltage terminal, and both the first and second light emission control subcircuits are used to drive the light emission unit to emit light. The anode of the light emission unit is electrically connected to the first and second light emission control subcircuits, the storage element, and the calculation subcircuit, and the cathode of the light emission unit is electrically connected to the second power supply voltage terminal, and the light emission unit is used to emit light. The storage element is electrically connected to the calculation subcircuit and is used to store electrical energy. The calculation subcircuit is electrically connected to the first data input subcircuit, the second data input subcircuit, and the reference voltage terminal. It is used to obtain an output signal by comparing the voltage at the electrical connection point between the energy storage element and the calculation subcircuit with the reference voltage received at the reference voltage terminal, and to transmit the output signal to the first data input subcircuit and the second data input subcircuit. The first data input subcircuit is electrically connected to the second data input subcircuit and the first data signal terminal. It is switched on or off in response to the output signal transmitted from the calculation subcircuit. When switched on, it transmits the first data signal input from the first data signal terminal to the first and second light emission control subcircuits to drive the light emission unit to emit light. The second data input subcircuit is electrically connected to the second data signal terminal. It is switched on or off in response to the output signal transmitted from the calculation subcircuit. When switched on, it transmits the second data signal input from the second data signal terminal to the first and second light emission control subcircuits to drive the light emission unit to emit light.

[0007] Based on a similar concept, in a second embodiment, the present invention further provides a display panel, which includes the above-mentioned drive circuit, used to display an image.

[0008] Based on a similar concept, in a third embodiment, the present application further provides a display device, which includes the display panel described above.

[0009] In summary, in the drive circuit, display panel, and display device of the present invention, charging of the storage capacitor begins after the light-emitting unit starts operating. When the voltage at the electrical connection point between the energy storage element and the calculation subcircuit is less than the reference voltage output from the reference voltage terminal, the amplifier outputs a low-level signal, the first data input subcircuit turns on, the first data signal input from the first data signal terminal is transmitted to the gate of the first drive transistor and the gate of the second drive transistor, and the first or second drive transistor turns on. When the voltage at the electrical connection point between the energy storage element and the calculation subcircuit is greater than the reference voltage output from the reference voltage terminal, the amplifier outputs a high-level signal, the second switch transistor turns on, the second data signal input from the second data signal terminal is transmitted to the gate of the first drive transistor and the gate of the second drive transistor, the first or second drive transistor turns on, and the DC drive is switched to AC drive. This effectively improves the display life of the TFT. [Brief explanation of the drawing]

[0010] To more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments are briefly introduced below. Clearly, the drawings in the following description are of some embodiments of the present application, and those skilled in the art can obtain other drawings from these without any creative effort. [Figure 1] This is a schematic diagram of a display panel according to an embodiment of the present application. [Figure 2] This is a schematic circuit diagram of a drive circuit according to an embodiment of the present application. [Figure 3]Figure 2 is a schematic diagram showing the circuit configuration of the drive circuit. [Figure 4] This is a timing chart of the drive circuit according to an embodiment of the present application. [Figure 5] This is another timing chart of the drive circuit according to the embodiment of the present application. [Modes for carrying out the invention]

[0011] To facilitate understanding of the present application, the present application will be described more completely below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be carried out in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the present application.

[0012] The following description of embodiments is used to illustrate specific embodiments in which the present invention can be implemented, with reference to the accompanying drawings. In this application, the numbers assigned to components such as “First,” “Second,” etc., are used solely to distinguish the objects being described and have no order or technical meaning. Unless otherwise specified, “connection” and “linking” in this application include both direct and indirect connections (linking). Directional terms such as “up,” “down,” “front,” “back,” “left,” “right,” “inside,” “outside,” and “side” in this application refer to directions indicated in the accompanying drawings. Therefore, the directional terms used are intended to better and more clearly describe and understand this application and do not indicate or imply that the described devices or components have a specific orientation, or must be configured and operate in a specific orientation. Consequently, they should not be understood as limiting this application.

[0013] In this description, the terms “attachment,” “connection,” and “linking” should be understood in a broad sense unless otherwise explicitly defined and limited. For example, a connection may be fixed, removable, or integral. It may be a mechanical connection. It may be a direct connection, an indirect connection via an intermediate medium, or internal communication between two components. A person skilled in the art will be able to understand the specific meaning of these terms in this application depending on the specific circumstances. The terms “first,” “second,” etc., in the specification, claims, and drawings of this application are for distinguishing different subjects and not to indicate a particular order.

[0014] Furthermore, the terms “equipment,” “may be equipped,” “include,” or “may include” as used in this Application mean the presence of the corresponding function, operation, element, etc. disclosed, and do not limit one or more other further functions, operations, elements, etc. Furthermore, the terms “equipment” or “include” mean the presence of the corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the Specification, but do not exclude the presence or addition of one or more other features, number, step, operation, element, component, or combination thereof, and are intended to cover without excluding the inclusion of other components. Furthermore, when describing embodiments of this Application, “may” is used to mean “one or more embodiments of this Application.” Also, the term “exemplary” means that the description is given by example or illustration.

[0015] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by an expert in the art of this application. Terms used in this specification are used solely to describe specific embodiments and are not intended to limit this application.

[0016] The present invention aims to provide a technical proposal for a drive circuit, display panel, and display device that can solve the above-mentioned technical problems. This solves the problem of shortened lifespan of thin-film field-effect transistors (TFTs) due to long-term driving of DC data signals, thereby improving the lifespan of the product. Details will be described in later embodiments.

[0017] Referring to Figure 1, which is a schematic diagram of a display panel according to an embodiment of the present application. In this embodiment, the display panel 10 includes a display area (Active Area) 11 and a non-display area 12. The display area 11 is used for displaying images, and the non-display area 12 is provided so as to surround the display area 11 and is not used for displaying images. The display panel 10 further includes a plurality of drive circuits 100. The plurality of drive circuits 100 are all provided in the display area 11 and are used to display images. To make it clear, in some embodiments, the display panel 10 may be a micro light-emitting diode (Micro LED) display panel or an organic light-emitting diode (OLED) display panel, but is not limited to these in the present application.

[0018] For better understanding, the display panel 10 can be used in an electronic device including a Personal Digital Assistant (PDA) and / or a music player function, such as a mobile phone, a tablet computer, a wearable electronic device with a wireless communication function (such as a smartwatch, a smart bracelet, etc.). The above electronic device may also be other electronic devices such as a laptop computer having a touch-sensitive surface (such as a touch panel). In some embodiments, the electronic device can have a communication function, that is, it can establish communication with a network using 2G (the second-generation mobile phone communication technology standard), 3G (the third-generation mobile phone communication technology standard), 4G (the fourth-generation mobile phone communication technology standard), 5G (the fifth-generation mobile phone communication technology standard), or W-LAN (Wireless Local Area Network), or a future communication method. For the sake of simplicity, no further limitation is imposed in the embodiments of this application regarding this.

[0019] Referring to FIG. 2, FIG. 2 is a schematic circuit diagram of a driving circuit according to an embodiment of the present application. As shown in FIG. 2, the driving circuit 100 according to the present application can include at least a first light emission control sub-circuit 110, a second light emission control sub-circuit 120, a light emission unit 140, a power storage element 150, an arithmetic sub-circuit 160, a first data input sub-circuit 180, and a second data input sub-circuit 190.

[0020] The first light emission control sub-circuit 110 is electrically connected to the second light emission control sub-circuit 120, the light emission unit 140, the power storage element 150, the arithmetic sub-circuit 160, the first data input sub-circuit 180, the second data input sub-circuit 190, and the first power supply voltage terminal 210, and is used to drive the light emission unit 140 to emit light. The first power supply voltage terminal 210 is used to receive the first power supply voltage V dd for this purpose.

[0021] The second light emission control sub-circuit 120 is electrically connected to the first light emission control sub-circuit 110, the light emitting unit 140, the power storage element 150, the arithmetic sub-circuit 160, the first data input sub-circuit 180, the second data input sub-circuit 190, and the first power supply voltage terminal 210, and is used to drive the light emitting unit 140 to emit light.

[0022] The anode of the light emitting unit 140 is electrically connected to the first light emission control sub-circuit 110, the second light emission control sub-circuit 120, the power storage element 150, and the arithmetic sub-circuit 160. The cathode of the light emitting unit 140 is electrically connected to the second power supply voltage terminal 220. It is used for the light emitting unit 140 to emit light. The second power supply voltage terminal 220 receives the second power supply voltage V ss which is used for receiving.

[0023] In the embodiment of the present application, the light emitting unit 140 may be a Micro LED.

[0024] The power storage element 150 is electrically connected to the first light emission control sub-circuit 110, the second light emission control sub-circuit 120, the light emitting unit 140, and the arithmetic sub-circuit 160, and is used to store electrical energy. After the power storage element 150 is charged, the voltage at point D can be obtained at point D which is located between the second light emission control sub-circuit 120 and the power storage element 150 (for example, the midpoint position) and is electrically connected to the arithmetic sub-circuit 160.

[0025] The arithmetic sub-circuit 160 is electrically connected to the second light emission control sub-circuit 120, the power storage element 150, the first data input sub-circuit 180, the second data input sub-circuit 190, and the reference voltage terminal 230, and is used to compare the voltage at point D with the reference voltage V ref received at the reference voltage terminal 230 to obtain an output signal, and transmit the output signal to the first data input sub-circuit 180 and the second data input sub-circuit 190. The reference voltage terminal 230 is used to receive the reference voltage V ref which is used for receiving.

[0026] The first data input subcircuit 180 is electrically connected to the first light emission control subcircuit 110, the second light emission control subcircuit 120, the calculation subcircuit 160, the second data input subcircuit 190, and the first data signal terminal 250. It turns on or off in response to the output signal transmitted from the calculation subcircuit 160, and when it is on, it transmits the first data signal input from the first data signal terminal 250 to the first light emission control subcircuit 110 and the second light emission control subcircuit 120 to drive the light emission unit 140 to emit light. The first data signal may be a DC data signal.

[0027] The second data input subcircuit 190 is electrically connected to the first light emission control subcircuit 110, the second light emission control subcircuit 120, the calculation subcircuit 160, the first data input subcircuit 180, and the second data signal terminal 260. It is turned on or off in response to the output signal transmitted from the calculation subcircuit 160, and when it is on, it transmits the second data signal input from the second data signal terminal 260 to the first light emission control subcircuit 110 and the second light emission control subcircuit 120 to drive the light emission unit 140 to emit light. The second data signal is an AC data signal.

[0028] In summary, in this drive circuit, charging of the energy storage element 150 begins after the light-emitting unit 140 starts operating. The voltage at point D is equal to the reference voltage V output from the reference voltage terminal 230. ref If the value is smaller, the calculation subcircuit 160 outputs a low-level signal, the first data input subcircuit 180 turns on, and the first data signal input from the first data signal terminal 250 is transmitted to the first light emission control subcircuit 110 and the second light emission control subcircuit 120, causing either the first light emission control subcircuit 110 or the second light emission control subcircuit 120 to turn on. The voltage at point D is equal to the reference voltage V output from the reference voltage terminal 230. refIf the value is greater than the specified value, the calculation subcircuit 160 outputs a high-level signal, the second data input subcircuit 190 turns on, and the second data signal input from the second data signal terminal 260 is transmitted to the first light emission control subcircuit 110 and the second light emission control subcircuit 120, causing either the first light emission control subcircuit 110 or the second light emission control subcircuit 120 to turn on, and the DC drive is switched to AC drive. This effectively improves the display life of the TFT.

[0029] Referring to Figure 3, Figure 3 is a schematic diagram showing the circuit configuration of the drive circuit shown in Figure 2. As shown in Figure 3, the first light emission control subcircuit 110 in the drive circuit 100 of the present invention includes a first drive transistor T1. The gate of the first drive transistor T1 is electrically connected to the second light emission control subcircuit 120, the first data input subcircuit 180, and the second data input subcircuit 190. The drain of the first drive transistor T1 is electrically connected to the second light emission control subcircuit 120 and the first power supply voltage terminal 210. The source of the first drive transistor T1 is electrically connected to the second light emission control subcircuit 120, the anode of the light emission unit 140, the energy storage element 150, and the calculation subcircuit 160. The first drive transistor T1 is used to drive the light emission unit 140 to emit light.

[0030] In the embodiments of the present application, the first drive transistor T1 may be an N-type transistor.

[0031] The second light emission control subcircuit 120 includes a second drive transistor T2. The gate of the second drive transistor T2 is electrically connected to the gate of the first drive transistor T1, the first data input subcircuit 180, and the second data input subcircuit 190. The source of the second drive transistor T2 is electrically connected to the drain of the first drive transistor T1 and the first power supply voltage terminal 210. The drain of the second drive transistor T2 is electrically connected to the source of the first drive transistor T1, the anode of the light emission unit 140, the energy storage element 150, and the calculation subcircuit 160. The second drive transistor T2 is used to drive the light emission unit 140 to emit light.

[0032] In the embodiments of the present application, the second drive transistor T2 may be a P-type transistor.

[0033] The energy storage element 150 includes a storage capacitor C1. The first terminal of the storage capacitor C1 is electrically connected to the source of the first drive transistor T1, the anode of the light-emitting unit 140, the drain of the second drive transistor T2, and the arithmetic subcircuit 160. The second terminal of the energy storage capacitor C1 is grounded. The energy storage element 150 is used to be charged and store electrical energy.

[0034] The arithmetic subcircuit 160 includes amplifier U1. The non-inverting input terminal of amplifier U1 is electrically connected between the drain of the second drive transistor T2 and the first terminal of the storage capacitor C1, and is used to receive the voltage at point D. The inverting input terminal of amplifier U1 receives the reference voltage V at the reference voltage terminal 230. ref It is used to input the following. The output terminal of amplifier U1 is electrically connected to the first data input subcircuit 180 and the second data input subcircuit 190. Amplifier U1 receives the voltage at point D and the reference voltage V at the reference voltage terminal 230. ref This is used to obtain the corresponding output signal by comparing it with the first data input subcircuit 180 and the second data input subcircuit 190, and to transmit the output signal to the first data input subcircuit 180 and the second data input subcircuit 190.

[0035] In the embodiments of the present application, the amplifier U1 may be an operational amplifier (OP).

[0036] The first data input subcircuit 180 includes a first switch transistor T3. The gate of the first switch transistor T3 is electrically connected to the output terminal of amplifier U1 and the second data input subcircuit 190. The source of the first switch transistor T3 is electrically connected to the first data signal terminal 250. The drain of the first switch transistor T3 is electrically connected to the gate of the first drive transistor T1, the gate of the second drive transistor T2, and the second data input subcircuit 190. The first switch transistor T3 is turned on or off in response to the output signal transmitted from the output terminal of amplifier U1, and when it is on, it is used to transmit the first data signal input from the first data signal terminal 250 to the gate of the first drive transistor T1 and the gate of the second drive transistor T2.

[0037] In the embodiments of the present invention, the first switch transistor T3 may be a P-type transistor.

[0038] The second data input subcircuit 190 includes a second switch transistor T4. The gate of the second switch transistor T4 is electrically connected to the output terminal of amplifier U1 and the gate of the first switch transistor T3. The source of the second switch transistor T4 is electrically connected to the gate of the first drive transistor T1, the gate of the second drive transistor T2, and the drain of the first switch transistor T3. The drain of the second switch transistor T4 is electrically connected to the second data signal terminal 260. The second switch transistor T4 is turned on or off in response to the output signal transmitted from the output terminal of amplifier U1, and is used to transmit the second data signal input from the second data signal terminal 260 to the gates of the first drive transistor T1 and the second drive transistor T2 when it is on.

[0039] In an embodiment of the present application, the second switch transistor T4 may be an N-type transistor.

[0040] Please also refer to FIG. 4. FIG. 4 is a timing chart of a driving circuit according to an embodiment of the present application. As shown in FIG. 4, when the first data signal is input from the first data signal terminal 250, the first data signal is input to the gates of the first driving transistor T1 and the second driving transistor T2, and the first driving transistor T1 or the second driving transistor T2 is turned on, and the light emitting unit 140 is driven to emit light, and the charging of the storage capacitor C1 starts. The voltage at point D is lower than the reference voltage V output from the reference voltage terminal 230, the output terminal of the amplifier U1 outputs a low-level signal, the first switch transistor T3 is turned on, and the first data signal input from the first data signal terminal 250 is transmitted to the gates of the first driving transistor T1 and the second driving transistor T2, and the first driving transistor T1 or the second driving transistor T2 operates. ref Smaller, the output terminal of the amplifier U1 outputs a low-level signal, the first switch transistor T3 is turned on, and the first data signal input from the first data signal terminal 250 is transmitted to the gates of the first driving transistor T1 and the second driving transistor T2, and the first driving transistor T1 or the second driving transistor T2 operates.

[0041] Please also refer to FIG. 5. FIG. 5 is another timing chart of a driving circuit according to an embodiment of the present application. Specifically, two stages t1 and t2 of the timing chart shown in FIG. 5 are selected. Details of the timing chart of the driving circuit shown in FIG. 5 will be described in later embodiments.

[0042] In the t1 stage and the t2 stage, when the second data signal is input from the second data signal terminal 260, the second data signal input from the second data signal terminal 260 is transmitted to the gates of the first driving transistor T1 and the second driving transistor T2, and the first driving transistor T1 or the second driving transistor T2 is turned on, and the light emitting unit 140 is driven to emit light, and the charging of the storage capacitor C1 starts. When the voltage at point D is higher than the reference voltage V output from the reference voltage terminal 230, the output terminal of the amplifier U1 ref Is larger, the output terminal of the amplifier U1 is highA level signal is output, the second switch transistor T4 turns on, and the second data signal input from the second data signal terminal 260 is transmitted to the gate of the first drive transistor T1 and the gate of the second drive transistor T2, causing the first drive transistor T1 and the second drive transistor T2 to operate alternately with periods of t1 and t2.

[0043] Specifically, in stage t1, when a second data signal is input from the second data signal terminal 260, the second data signal input from the second data signal terminal 260 is transmitted to the gate of the first drive transistor T1 and the gate of the second drive transistor T2, causing the first drive transistor T1 to turn on and drive the light-emitting unit 140 to emit light.

[0044] At stage t2, when the second data signal is input from the second data signal terminal 260, the second data signal input from the second data signal terminal 260 is transmitted to the gate of the first drive transistor T1 and the gate of the second drive transistor T2, causing the second drive transistor T2 to turn on and drive the light-emitting unit 140 to emit light.

[0045] In summary, in this drive circuit, charging of the storage capacitor C1 begins after the light-emitting unit 140 starts operating. The voltage at point D is equal to the reference voltage V output from the reference voltage terminal 230. ref If the value is smaller, amplifier U1 outputs a low-level signal, the first data input subcircuit 180 turns on, and the first data signal input from the first data signal terminal 250 is transmitted to the gate of the first drive transistor T1 and the gate of the second drive transistor T2, turning on either the first drive transistor T1 or the second drive transistor T2. The voltage at point D is the output reference voltage V output from the reference voltage terminal 230. refIf the value is greater, amplifier U1 outputs a high-level signal, the second switch transistor T4 turns on, and the second data signal input from the second data signal terminal 260 is transmitted to the gates of the first drive transistor T1 and the second drive transistor T2, turning on either the first drive transistor T1 or the second drive transistor T2, switching from DC drive to AC drive. This effectively improves the display life of the TFT.

[0046] Based on a similar concept, the present application further provides a display device including the display panel described above. The display device includes, but is not limited to, electronic devices or components having a display function, such as Micro LED panels, mobile phones, tablet computers, car navigation systems, and displays. The present application does not particularly limit this. According to embodiments of the present application, the specific types of the display device are not particularly limited and can be designed according to the specific usage requirements to which the display device is applied by those skilled in the art, so a description is omitted here.

[0047] In one embodiment, the display device further includes other necessary components and configurations such as a power supply board, a high-voltage board, and a key control board. Those skilled in the art can supplement this description depending on the specific type and actual function of the display device, so such details are omitted here.

[0048] The flowchart described herein represents only one embodiment, and various modifications and changes may be made to this drawing or the operations described herein, as long as they do not depart from the spirit of this application. For example, these operations may be performed in a different order, and some operations may be added, deleted, or changed. A person skilled in the art will be able to understand and implement all or part of the processes of the above embodiment. In addition, equivalent variations obtained based on the claims of this application still fall within the scope of this application.

[0049] In this specification, reference terms such as “one embodiment,” “several embodiments,” “exemplary embodiment,” “example,” “specific example,” or “several examples” mean that the specific features, structures, materials, or properties described in conjunction with such embodiments or examples are included in at least one embodiment or example of this application. In this specification, exemplary descriptions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or properties described may be appropriately combined in any one or more embodiments or examples.

[0050] The applications of this application are not limited to the examples given above, and those skilled in the art can make improvements and modifications based on the above description, all of which fall within the scope of the claims of this application. Those skilled in the art can understand and implement all or part of the methods of the embodiments described above. In addition, equivalent variations obtained based on the claims of this application fall within the scope of this application.

Claims

1. A drive circuit, It includes a first light emission control subcircuit, a second light emission control subcircuit, a light emission unit, an energy storage element, a calculation subcircuit, a first data input subcircuit, and a second data input subcircuit. Both the first light emission control subcircuit and the second light emission control subcircuit are electrically connected to the light emission unit, the energy storage element, the calculation subcircuit, the first data input subcircuit, the second data input subcircuit, and the first power supply voltage terminal, the first light emission control subcircuit includes a first drive transistor, the second light emission control subcircuit includes a second drive transistor, both the first drive transistor and the second drive transistor are used to drive the light emission unit to emit light, and the conductivity types of the first drive transistor and the second drive transistor are different. The anode of the light-emitting unit is electrically connected to the first light-emitting control subcircuit, the second light-emitting control subcircuit, the energy storage element, and the calculation subcircuit, and the cathode of the light-emitting unit is electrically connected to the second power supply voltage terminal, and the light-emitting unit is used to emit light. The energy storage element is electrically connected to the calculation subcircuit and is used to store electrical energy. The calculation subcircuit is electrically connected to the first data input subcircuit, the second data input subcircuit, and the reference voltage terminal, and is used to obtain an output signal by comparing the voltage at the electrical connection point between the energy storage element and the calculation subcircuit with the reference voltage received at the reference voltage terminal, and to transmit the output signal to the first data input subcircuit and the second data input subcircuit. The first data input subcircuit is electrically connected to the second data input subcircuit and the first data signal terminal, and is turned on or off in response to the output signal transmitted from the calculation subcircuit. When it is on, it transmits the first data signal input from the first data signal terminal to the first light emission control subcircuit and the second light emission control subcircuit to drive the light emission unit to emit light. The second data input subcircuit is electrically connected to the second data signal terminal and is turned on or off in response to the output signal transmitted from the calculation subcircuit. When it is on, it transmits the second data signal input from the second data signal terminal to the first light emission control subcircuit and the second light emission control subcircuit to drive the light emission unit to emit light. The first data signal is a DC data signal, and the second data signal is an AC data signal. A drive circuit characterized by the following features.

2. The gate of the first drive transistor is electrically connected to the second light emission control subcircuit, the first data input subcircuit, and the second data input subcircuit; the drain of the first drive transistor is electrically connected to the second light emission control subcircuit and the first power supply voltage terminal; and the source of the first drive transistor is electrically connected to the second light emission control subcircuit, the anode of the light emission unit, the energy storage element, and the calculation subcircuit. The drive circuit according to feature 1.

3. The gate of the second drive transistor is electrically connected to the gate of the first drive transistor, the first data input subcircuit, and the second data input subcircuit; the source of the second drive transistor is electrically connected to the drain of the first drive transistor and the first power supply voltage terminal; and the drain of the second drive transistor is electrically connected to the source of the first drive transistor, the anode of the light-emitting unit, the energy storage element, and the calculation subcircuit. The drive circuit according to feature 2.

4. The energy storage element includes a storage capacitor, the first end of which is electrically connected to the source of the first drive transistor, the anode of the light-emitting unit, the drain of the second drive transistor, and the arithmetic subcircuit, the second end of which is grounded, and the energy storage element is used to be charged and store electrical energy. The drive circuit according to feature 3.

5. The calculation subcircuit includes an amplifier, the non-inverting input terminal of the amplifier is electrically connected between the drain of the second drive transistor and the first terminal of the storage capacitor and is used to receive the voltage at the electrical connection point between the energy storage element and the calculation subcircuit, the inverting input terminal of the amplifier is used to receive a reference voltage received at the reference voltage terminal, the output terminal of the amplifier is electrically connected to the first data input subcircuit and the second data input subcircuit, the amplifier is used to obtain an output signal by comparing the voltage at the electrical connection point between the energy storage element and the calculation subcircuit with the reference voltage received at the reference voltage terminal, and to transmit the output signal to the first data input subcircuit and the second data input subcircuit. The drive circuit according to feature 4.

6. The first data input subcircuit includes a first switch transistor, the gate of which is electrically connected to the output terminal of the amplifier and the second data input subcircuit, the source of which is electrically connected to the first data signal terminal, and the drain of which is electrically connected to the gate of the first drive transistor, the gate of the second drive transistor, and the second data input subcircuit. The first switch transistor is turned on or off in response to an output signal transmitted from the output terminal of the amplifier, and is used in the ON state to transmit a first data signal input from the first data signal terminal to the gates of the first drive transistor and the second drive transistor. The drive circuit according to feature 5.

7. The second data input subcircuit includes a second switch transistor, the gate of which is electrically connected to the output terminal of the amplifier and the gate of the first switch transistor, the source of which is electrically connected to the gate of the first drive transistor, the gate of the second drive transistor, and the drain of the first switch transistor, and the drain of which is electrically connected to the second data signal terminal, the second switch transistor is turned on or off in response to an output signal transmitted from the output terminal of the amplifier, and is used in the ON state to transmit a second data signal input from the second data signal terminal to the gate of the first drive transistor and the gate of the second drive transistor. The drive circuit according to feature 6.

8. It is a display panel, The display panel includes a drive circuit according to any one of claims 1 to 7, and the drive circuit is used to display an image. A display panel characterized by the following features.

9. A display device, The display device includes the display panel described in claim 8. A display device characterized by the following features.

Images