Drive circuit, display panel and display device

The driving circuit addresses the issue of shortened TFT lifespan by switching between DC and AC driving modes, effectively extending the display panel's life through alternating transistor operation.

JP2025531405AActive Publication Date: 2025-09-19HKC CORP LTD
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Patent Information

Application Number
JP2025517409
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-10-12
Filing Date
2023-06-15
Publication Date
2025-09-19
Estimated Expiration
2043-06-15

AI Technical Summary

Technical Problem

The lifespan of thin film transistors (TFTs) is shortened due to long-term driving of DC data signals in display screens.

Method used

A driving circuit with a first and second light-emitting control subcircuit, a light-emitting unit, storage element, calculation subcircuit, and data input subcircuits that switch between DC and AC driving modes based on voltage comparisons, improving TFT longevity.

Benefits of technology

Switching from DC to AC driving mode extends the lifespan of TFTs by alternating transistor operation, thereby enhancing the overall product life.

✦ Generated by Eureka AI based on patent content.

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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.
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Description

[Technical Field]

[0001] REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese Patent Application No. 202211248818.6, filed on October 12, 2022, for the invention entitled "Driver Circuit, Display Panel and Display Device," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of display technology, and in particular to a drive circuit, a display panel including the drive circuit, and a display device including the display panel. [Background technology]

[0003] Currently, when a display screen operates for a long time, the lifespan of a thin film transistor (TFT) is shortened due to the long-term driving of a DC data signal, which affects the lifespan of the product.

[0004] Therefore, how to solve the problem of shortened TFT life due to long-term driving of DC data signals is an issue that must be solved as soon as possible by those skilled in the art. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present application is to provide a driving circuit that solves the problem of shortened TFT life caused by long-term driving of DC data signals, thereby improving the life of the product.

[0006] To solve the above technical problems, in a first aspect, the present application provides a driving circuit. The driving circuit includes a first light-emitting control subcircuit, a second light-emitting control subcircuit, a light-emitting unit, a storage element, a calculation subcircuit, a first data input subcircuit, and a second data input subcircuit. The first light-emitting control subcircuit and the second light-emitting control subcircuit are both electrically connected to the light-emitting 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 the first light-emitting control subcircuit and the second light-emitting control subcircuit are both used to drive the light-emitting unit to emit light. The anode of the light-emitting unit is electrically connected to the first light-emitting control subcircuit, the second light-emitting control subcircuit, the 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 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 compare the voltage at the electrical connection point between the storage element and the calculation subcircuit with a reference voltage received at the reference voltage terminal to obtain an output signal and 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. In the on state, the first data input subcircuit is used to transmit a first data signal input from the first data signal terminal to the first light-emitting control subcircuit and the second light-emitting control subcircuit to drive the light-emitting units 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. In the on state, the second data input subcircuit is used to transmit a second data signal input from the second data signal terminal to the first light-emitting control subcircuit and the second light-emitting control subcircuit to drive the light-emitting units to emit light.

[0007] Based on a similar concept, in a second aspect, the present application further provides a display panel, which includes the above-mentioned driving circuit, and the driving circuit is used to display an image.

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

[0009] In summary, in the driving circuit, display panel, and display device of the present application, after the light-emitting unit starts operating, the storage capacitor begins to charge. When the voltage at the electrical connection point between the storage element and the calculation subcircuit is lower than the reference voltage output from the reference voltage terminal, the amplifier outputs a low-level signal, the first data input subcircuit is turned on, the first data signal input from the first data signal terminal is transmitted to the gates of the first driving transistor and the second driving transistor, and the first driving transistor or the second driving transistor is turned on. When the voltage at the electrical connection point between the storage element and the calculation subcircuit is higher than the reference voltage output from the reference voltage terminal, the amplifier outputs a high-level signal, the second switch transistor is turned on, the second data signal input from the second data signal terminal is transmitted to the gates of the first driving transistor and the second driving transistor, and the first driving transistor or the second driving transistor is turned on, switching from DC driving to AC driving. This effectively improves the display life of the TFT. [Brief explanation of the drawings]

[0010] In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings used in the embodiments are briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings from these drawings without creative efforts. [Figure 1] 1 is a schematic configuration diagram of a display panel according to an embodiment of the present application. [Figure 2] 1 is a schematic circuit diagram of a drive circuit according to an embodiment of the present application; [Figure 3]FIG. 3 is a schematic diagram showing a circuit configuration of the drive circuit shown in FIG. [Figure 4] 4 is a timing chart of a drive circuit according to an embodiment of the present application. [Figure 5] 10 is another timing chart of the drive circuit according to the embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0011] To facilitate an understanding of the present application, the present application will now be described more fully with reference to the associated drawings. Preferred embodiments of the present application are illustrated in the drawings. However, the present application may be embodied in many different forms and is not limited to the embodiments set forth herein. The purpose of providing these embodiments is to provide a more thorough and complete understanding of the present application.

[0012] The following description of the embodiments is used to illustrate specific embodiments that can be implemented with reference to the accompanying drawings. In this application, the numbers assigned to components, such as "first" and "second," are used merely to distinguish the objects being described and have no ordering or technical significance. The terms "connection" and "coupling" used in this application include direct and indirect connection (coupling) unless otherwise specified. Directional terms used in this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and "side," are directions indicated based on the accompanying drawings. Therefore, the directional terms used are used to better and more clearly explain and understand this application, and do not indicate or imply that the described devices or components must have a specific orientation, be configured, or operate in a specific orientation. Therefore, they cannot be understood as limiting this application.

[0013] In the description of this application, the terms "attached," "connected," and "coupled" should be understood in a broad sense unless otherwise clearly specified or limited. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. They may also refer to a mechanical connection. They may also refer to a direct connection, an indirect connection via an intermediate medium, or internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this application depending on the specific circumstances. Note that the terms "first," "second," etc. in the specification, claims, and drawings of this application are used to distinguish different objects, and are not intended to describe a specific order.

[0014] Furthermore, as used herein, the terms "comprises," "may comprise," "includes," or "may include" refer to the presence of a corresponding disclosed feature, operation, element, etc., and are not intended to limit the presence of one or more additional features, operations, elements, etc. Furthermore, the terms "comprises" or "includes" refer to the presence of a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and do not preclude the inclusion of other components, and are intended to cover such. Furthermore, when describing embodiments of the present application, the term "may" is used to represent "one or more embodiments of the present application." Furthermore, the term "exemplary" refers to illustrating or explaining by way of example.

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

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

[0017] Referring to FIG. 1, FIG. 1 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 disposed around the display area 11 and is not used for displaying images. The display panel 10 further includes a plurality of driving circuits 100. The plurality of driving circuits 100 are all disposed in the display area 11 and are used for displaying images. As can be understood, 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 the present application is not limited thereto.

[0018] As can be appreciated, the display panel 10 can be used in electronic devices including personal digital assistant (PDA) and / or music player functions, such as mobile phones, tablet computers, and wearable electronic devices with wireless communication capabilities (e.g., smart watches, smart bracelets, etc.). The electronic devices may also be other electronic devices, such as laptop computers with touch-sensitive surfaces (e.g., touch panels). In some embodiments, the electronic devices may have communication capabilities, i.e., may be capable of establishing communication with a network using 2G (second generation mobile phone communication technology standard), 3G (third generation mobile phone communication technology standard), 4G (fourth generation mobile phone communication technology standard), 5G (fifth generation mobile phone communication technology standard), W-LAN (wireless local area network), or a future communication method. For simplicity, this is not further limited in the embodiments of the present application.

[0019] 2, which 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 may include at least a first light-emitting control sub-circuit 110, a second light-emitting control sub-circuit 120, a light-emitting unit 140, a 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-emitting control subcircuit 110 is electrically connected to the second light-emitting control subcircuit 120, the light-emitting unit 140, the power storage element 150, the calculation subcircuit 160, the first data input subcircuit 180, the second data input subcircuit 190, and the first power supply voltage terminal 210, and is used to drive the light-emitting unit 140 to emit light. The first power supply voltage terminal 210 is connected to the first power supply voltage V dd It is used to receive.

[0021] The second light-emitting control subcircuit 120 is electrically connected to the first light-emitting control subcircuit 110, the light-emitting unit 140, the storage element 150, the calculation subcircuit 160, the first data input subcircuit 180, the second data input subcircuit 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-emitting control sub-circuit 110, the second light-emitting control sub-circuit 120, the storage element 150, and the calculation sub-circuit 160. The cathode of the light-emitting unit 140 is electrically connected to the second power supply voltage terminal 220. The second power supply voltage terminal 220 is used to make the light-emitting unit 140 emit light. The second power supply voltage terminal 220 is connected to the second power supply voltage V ss It is used to receive.

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

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

[0025] The calculation subcircuit 160 is electrically connected to the second light-emitting control subcircuit 120, the storage element 150, the first data input subcircuit 180, the second data input subcircuit 190, and the reference voltage terminal 230, and calculates the voltage at point D and the reference voltage V ref and transmits 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 compare the reference voltage V ref It is used to receive.

[0026] The first data input sub-circuit 180 is electrically connected to the first light-emitting control sub-circuit 110, the second light-emitting control sub-circuit 120, the calculation sub-circuit 160, the second data input sub-circuit 190, and the first data signal terminal 250, and is turned on or off according to the output signal transmitted from the calculation sub-circuit 160. When in the on state, the first data signal input from the first data signal terminal 250 is transmitted to the first light-emitting control sub-circuit 110 and the second light-emitting control sub-circuit 120 to drive the light-emitting unit 140 to emit light. The first data signal may be a DC data signal.

[0027] The second data input sub-circuit 190 is electrically connected to the first light-emitting control sub-circuit 110, the second light-emitting control sub-circuit 120, the calculation sub-circuit 160, the first data input sub-circuit 180, and the second data signal terminal 260, and is turned on or off according to the output signal transmitted from the calculation sub-circuit 160. When in the on state, the second data signal input from the second data signal terminal 260 is transmitted to the first light-emitting control sub-circuit 110 and the second light-emitting control sub-circuit 120 to drive the light-emitting unit 140 to emit light. The second data signal is an AC data signal.

[0028] In summary, in this driving circuit, after the light-emitting unit 140 starts operating, the charging of the storage element 150 begins. The voltage at point D is the reference voltage V ref If it is smaller than the reference voltage V , the calculation subcircuit 160 outputs a low-level signal, the first data input subcircuit 180 is turned on, the first data signal input from the first data signal terminal 250 is transmitted to the first light-emitting control subcircuit 110 and the second light-emitting control subcircuit 120, and the first light-emitting control subcircuit 110 or the second light-emitting control subcircuit 120 is turned on. refIf the voltage Vcc is greater than 0.001V, the calculation sub-circuit 160 outputs a high-level signal, the second data input sub-circuit 190 is turned on, the second data signal input from the second data signal terminal 260 is transmitted to the first light-emitting control sub-circuit 110 and the second light-emitting control sub-circuit 120, the first light-emitting control sub-circuit 110 or the second light-emitting control sub-circuit 120 is turned on, and the DC drive is switched to the AC drive, which 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 driving circuit shown in Figure 2. As shown in Figure 3, the first light-emitting control sub-circuit 110 in the driving circuit 100 of the present application includes a first driving transistor T1. The gate of the first driving transistor T1 is electrically connected to the second light-emitting control sub-circuit 120, the first data input sub-circuit 180, and the second data input sub-circuit 190. The drain of the first driving transistor T1 is electrically connected to the second light-emitting control sub-circuit 120 and the first power supply voltage terminal 210. The source of the first driving transistor T1 is electrically connected to the second light-emitting control sub-circuit 120, the anode of the light-emitting unit 140, the storage element 150, and the calculation sub-circuit 160. The first driving transistor T1 is used to drive the light-emitting unit 140 to emit light.

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

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

[0032] In the present embodiment, the second driving transistor T2 may be a P-type transistor.

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

[0034] The operational subcircuit 160 includes an amplifier U1. The non-inverting input terminal of the amplifier U1 is electrically connected between the drain of the second drive transistor T2 and the first end of the storage capacitor C1, and is used to receive the voltage at point D. The inverting input terminal of the amplifier U1 is connected to the reference voltage V received at the reference voltage terminal 230. ref The output terminal of amplifier U1 is electrically connected to first data input subcircuit 180 and second data input subcircuit 190. Amplifier U1 is used to input the voltage at point D and the reference voltage V received at reference voltage terminal 230. ref to obtain a corresponding output signal, and transmit the output signal to the first data input sub-circuit 180 and the second data input sub-circuit 190.

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

[0036] The first data input sub-circuit 180 includes a first switch transistor T3. The gate of the first switch transistor T3 is electrically connected to the output terminal of the amplifier U1 and the second data input sub-circuit 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 sub-circuit 190. The first switch transistor T3 is turned on or off according to the output signal transmitted from the output terminal of the amplifier U1, and when on, transmits the first data signal input from the first data signal terminal 250 to the gates of the first drive transistor T1 and the second drive transistor T2.

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

[0038] The second data input sub-circuit 190 includes a second switch transistor T4. The gate of the second switch transistor T4 is electrically connected to the output terminal of the 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 according to the output signal transmitted from the output terminal of the amplifier U1, and when turned on, transmits 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.

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

[0040] Please also refer to FIG. 4, which is a timing chart of the driving circuit according to the embodiment of the present application. As shown in FIG. 4, when a first data signal is input from the first data signal terminal 250, the first data signal is input to the gate of the first driving transistor T1 and the gate of the second driving transistor T2, and the first driving transistor T1 or the second driving transistor T2 is turned on, driving the light emitting unit 140 to emit light, and charging of the storage capacitor C1 begins. The voltage at point D is the reference voltage V output from the reference voltage terminal 230. ref If the voltage is smaller than the threshold voltage, 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 gate of the first driving transistor T1 and the gate of the second driving transistor T2, and the first driving transistor T1 or the second driving transistor T2 operates.

[0041] Also see Figure 5. Figure 5 is another timing chart of a drive circuit according to an embodiment of the present application. Specifically, two stages, t1 and t2, are selected from the timing chart shown in Figure 5. Details of the timing chart of the drive circuit shown in Figure 5 will be described in a later embodiment.

[0042] At the time t1 and the time 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 driving transistor T1 and the gate of the second driving transistor T2, the first driving transistor T1 or the second driving transistor T2 is turned on, the light emitting unit 140 is driven to emit light, and the storage capacitor C1 starts to be charged. The voltage at the point D is converted into the reference voltage V refIf the voltage t1 is greater than t2, the output terminal of the amplifier U1 outputs a level signal, the second switch transistor T4 is turned on, and the second data signal input from the second data signal terminal 260 is transmitted to the gate of the first driving transistor T1 and the gate of the second driving transistor T2, and the first driving transistor T1 and the second driving transistor T2 operate alternately with a period of t1 and t2.

[0043] Specifically, at the stage t1, 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 driving transistor T1 and the gate of the second driving transistor T2, so that the first driving transistor T1 is turned on and the light-emitting unit 140 is driven to emit light.

[0044] At the time 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 driving transistor T1 and the gate of the second driving transistor T2, so that the second driving transistor T2 is turned on and the light-emitting unit 140 is driven to emit light.

[0045] In summary, in this driving circuit, after the light-emitting unit 140 starts to operate, the storage capacitor C1 starts to charge. The voltage at point D is converted into the reference voltage V ref If it is smaller than the reference voltage V , the amplifier U1 outputs a low-level signal, the first data input sub-circuit 180 is turned on, and the first data signal input from the first data signal terminal 250 is transmitted to the gate of the first driving transistor T1 and the gate of the second driving transistor T2, turning on the first driving transistor T1 or the second driving transistor T2. refIf it is greater than 1, the amplifier U1 outputs a high-level signal, the second switch transistor T4 is turned on, and the second data signal input from the second data signal terminal 260 is transmitted to the gate of the first driving transistor T1 and the gate of the second driving transistor T2, turning on the first driving transistor T1 or the second driving transistor T2, and switching from DC driving to AC driving, which effectively improves the display life of the TFT.

[0046] Based on a similar concept, the present application also provides a display device including the above-mentioned display panel. The display device may include, but is not limited to, electronic devices or components having a display function, such as a Micro LED panel, a mobile phone, a tablet computer, a car navigation system, a display, etc. The present application does not particularly limit the type of the display device. According to the embodiments of the present application, the specific type of the display device is not particularly limited, and those skilled in the art can design it according to the specific requirements of the application of the display device, so a description thereof will be 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, a key control board, etc. Those skilled in the art can add details according to the specific type and actual functions of the display device, so the description will be omitted here.

[0048] The flowcharts described in this application are merely one embodiment, and various modifications and changes may be made to the diagrams or operations in this application without departing from the spirit of this application. For example, these operations may be performed in a different order, or some operations may be added, deleted, or modified. Those skilled in the art will be able to understand and implement the entire or part of the process of the above embodiment. In addition, equivalent changes obtained in light of the claims of this application still fall within the scope of coverage of this application.

[0049] The reference terms "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples" used herein mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. References to the above-mentioned terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined as appropriate in any one or more embodiments or examples.

[0050] The application of the present application is not limited to the above examples, and those skilled in the art can make improvements and modifications based on the above description, and all such improvements and modifications fall within the scope of protection of the claims of the present application. Those skilled in the art can understand and implement the whole or part of the methods of the above embodiments. In addition, equivalent changes obtained in light of the scope of the claims of the present application fall within the scope of coverage of the present application.

Claims

1. A drive circuit, The light emitting device includes a first light emitting control subcircuit, a second light emitting control subcircuit, a light emitting unit, a storage element, a calculation subcircuit, a first data input subcircuit, and a second data input subcircuit; the first light-emitting control subcircuit and the second light-emitting control subcircuit are both electrically connected to the light-emitting 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 the first light-emitting control subcircuit and the second light-emitting control subcircuit are both used to drive the light-emitting unit to emit light; The anode of the light-emitting unit is electrically connected to the first light-emitting control sub-circuit, the second light-emitting control sub-circuit, the storage element, and the calculation sub-circuit, and the cathode of the light-emitting unit is electrically connected to a second power supply voltage terminal, and the light-emitting unit is used to emit light; the storage element is electrically connected to the operational subcircuit and is used to store electrical energy; the operation subcircuit is electrically connected to the first data input subcircuit, the second data input subcircuit, and a reference voltage terminal, and is used to compare a voltage at an electrical connection point between the storage element and the operation subcircuit with a reference voltage received at the reference voltage terminal to obtain an output signal, and transmit the output signal to the first data input subcircuit and the second data input subcircuit; the first data input sub-circuit is electrically connected to the second data input sub-circuit and a first data signal terminal, and is turned on or off according to the output signal transmitted from the calculation sub-circuit; and when in an on state, it transmits a first data signal input from the first data signal terminal to the first light-emitting control sub-circuit and the second light-emitting control sub-circuit to drive the light-emitting unit to emit light; the second data input sub-circuit is electrically connected to a second data signal terminal, and is turned on or off according to the output signal transmitted from the calculation sub-circuit; and when in an on state, the second data signal input from the second data signal terminal is transmitted to the first light-emitting control sub-circuit and the second light-emitting control sub-circuit to drive the light-emitting unit to emit light; A drive circuit comprising:

2. the first light-emitting control sub-circuit includes a first driving transistor, the gate of which is electrically connected to the second light-emitting control sub-circuit, the first data input sub-circuit, and the second data input sub-circuit; the drain of the first driving transistor is electrically connected to the second light-emitting control sub-circuit and the first power supply voltage terminal; the source of the first driving transistor is electrically connected to the second light-emitting control sub-circuit, the anode of the light-emitting unit, the storage element, and the calculation sub-circuit; and the first driving transistor is used to drive the light-emitting unit to emit light; 2. The drive circuit according to claim 1.

3. the second light-emitting control sub-circuit includes a second driving transistor, the gate of which is electrically connected to the gate of the first driving transistor, the first data input sub-circuit, and the second data input sub-circuit; the source of which is electrically connected to the drain of the first driving transistor and the first power supply voltage terminal; the drain of which is electrically connected to the source of the first driving transistor, the anode of the light-emitting unit, the storage element, and the calculation sub-circuit; and the second driving transistor is used to drive the light-emitting unit to emit light; 3. The drive circuit according to claim 2.

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

5. the operational subcircuit includes an amplifier, a 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 a voltage at an electrical connection point between the storage element and the operational subcircuit; an inverting input terminal of the amplifier is used to input a reference voltage received at the reference voltage terminal; an output terminal of the amplifier is electrically connected to the first data input subcircuit and the second data input subcircuit; the amplifier compares the voltage at the electrical connection point between the storage element and the operational subcircuit with the reference voltage received at the reference voltage terminal to obtain an output signal, and is used to transmit the output signal to the first data input subcircuit and the second data input subcircuit; 5. The drive circuit according to claim 4.

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

7. the second data input sub-circuit includes a second switch transistor, a gate of the second switch transistor electrically connected to the output terminal of the amplifier and the gate of the first switch transistor, a source of the second switch transistor 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 a drain of the second switch transistor electrically connected to the second data signal terminal, the second switch transistor being turned on or off according to an output signal transmitted from the output terminal of the amplifier, and being used 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 when in an on state; 7. The drive circuit according to claim 6.

8. the first data signal is a DC data signal and the second data signal is an AC data signal; 2. The drive circuit according to claim 1.

9. A display panel, the display panel includes a driving circuit, the driving circuit is used to display an image; the driving circuit includes a first light-emitting control subcircuit, a second light-emitting control subcircuit, a light-emitting unit, a storage element, a calculation subcircuit, a first data input subcircuit, and a second data input subcircuit; the first light-emitting control subcircuit and the second light-emitting control subcircuit are both electrically connected to the light-emitting 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 the first light-emitting control subcircuit and the second light-emitting control subcircuit are both used to drive the light-emitting unit to emit light; The anode of the light-emitting unit is electrically connected to the first light-emitting control sub-circuit, the second light-emitting control sub-circuit, the storage element, and the calculation sub-circuit, and the cathode of the light-emitting unit is electrically connected to a second power supply voltage terminal, and the light-emitting unit is used to emit light; the storage element is electrically connected to the operational subcircuit and is used to store electrical energy; the operation subcircuit is electrically connected to the first data input subcircuit, the second data input subcircuit, and a reference voltage terminal, and is used to compare a voltage at an electrical connection point between the storage element and the operation subcircuit with a reference voltage received at the reference voltage terminal to obtain an output signal, and transmit the output signal to the first data input subcircuit and the second data input subcircuit; the first data input sub-circuit is electrically connected to the second data input sub-circuit and a first data signal terminal, and is turned on or off according to the output signal transmitted from the calculation sub-circuit; and when in an on state, it transmits a first data signal input from the first data signal terminal to the first light-emitting control sub-circuit and the second light-emitting control sub-circuit to drive the light-emitting unit to emit light; the second data input sub-circuit is electrically connected to a second data signal terminal, and is turned on or off according to the output signal transmitted from the calculation sub-circuit; and when in an on state, the second data signal input from the second data signal terminal is transmitted to the first light-emitting control sub-circuit and the second light-emitting control sub-circuit to drive the light-emitting unit to emit light; A display panel characterized by:

10. the first light-emitting control sub-circuit includes a first driving transistor, the gate of which is electrically connected to the second light-emitting control sub-circuit, the first data input sub-circuit, and the second data input sub-circuit; the drain of the first driving transistor is electrically connected to the second light-emitting control sub-circuit and the first power supply voltage terminal; the source of the first driving transistor is electrically connected to the second light-emitting control sub-circuit, the anode of the light-emitting unit, the storage element, and the calculation sub-circuit; and the first driving transistor is used to drive the light-emitting unit to emit light; the second light-emitting control sub-circuit includes a second driving transistor, the gate of which is electrically connected to the gate of the first driving transistor, the first data input sub-circuit, and the second data input sub-circuit; the source of which is electrically connected to the drain of the first driving transistor and the first power supply voltage terminal; the drain of which is electrically connected to the source of the first driving transistor, the anode of the light-emitting unit, the storage element, and the calculation sub-circuit; and the second driving transistor is used to drive the light-emitting unit to emit light; 10. The display panel according to claim 9.

11. the storage element includes a storage capacitor, a first end of the storage capacitor is electrically connected to the source of the first driving transistor, the anode of the light-emitting unit, the drain of the second driving transistor and the calculation sub-circuit, and a second end of the storage capacitor is grounded, the storage element is used to be charged and store electrical energy; 11. The display panel according to claim 10.

12. the operational subcircuit includes an amplifier, a 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 a voltage at an electrical connection point between the storage element and the operational subcircuit; an inverting input terminal of the amplifier is used to input a reference voltage received at the reference voltage terminal; an output terminal of the amplifier is electrically connected to the first data input subcircuit and the second data input subcircuit; the amplifier compares the voltage at the electrical connection point between the storage element and the operational subcircuit with the reference voltage received at the reference voltage terminal to obtain an output signal, and is used to transmit the output signal to the first data input subcircuit and the second data input subcircuit; 12. The display panel according to claim 11.

13. the first data input sub-circuit includes a first switch transistor, a gate of the first switch transistor is electrically connected to the output terminal of the amplifier and the second data input sub-circuit, a source of the first switch transistor is electrically connected to the first data signal terminal, and a drain of the first switch transistor is electrically connected to the gate of the first drive transistor, the gate of the second drive transistor, and the second data input sub-circuit, the first switch transistor is turned on or off according to an output signal transmitted from the output terminal of the amplifier, and is used to transmit a first data signal input from the first data signal terminal to the gate of the first drive transistor and the gate of the second drive transistor in an on state; 13. The display panel according to claim 12.

14. the second data input sub-circuit includes a second switch transistor, a gate of the second switch transistor electrically connected to the output terminal of the amplifier and the gate of the first switch transistor, a source of the second switch transistor 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 a drain of the second switch transistor electrically connected to the second data signal terminal, the second switch transistor being turned on or off according to an output signal transmitted from the output terminal of the amplifier, and being used 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 when in an on state; 14. The display panel according to claim 13.

15. A display device, the display device includes a display panel, the display panel including a drive circuit for displaying an image; the driving circuit includes a first light-emitting control subcircuit, a second light-emitting control subcircuit, a light-emitting unit, a storage element, a calculation subcircuit, a first data input subcircuit, and a second data input subcircuit; the first light-emitting control subcircuit and the second light-emitting control subcircuit are both electrically connected to the light-emitting 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 the first light-emitting control subcircuit and the second light-emitting control subcircuit are both used to drive the light-emitting unit to emit light; The anode of the light-emitting unit is electrically connected to the first light-emitting control sub-circuit, the second light-emitting control sub-circuit, the storage element, and the calculation sub-circuit, and the cathode of the light-emitting unit is electrically connected to a second power supply voltage terminal, and the light-emitting unit is used to emit light; the storage element is electrically connected to the operational subcircuit and is used to store electrical energy; the operation subcircuit is electrically connected to the first data input subcircuit, the second data input subcircuit, and a reference voltage terminal, and is used to compare a voltage at an electrical connection point between the storage element and the operation subcircuit with a reference voltage received at the reference voltage terminal to obtain an output signal, and transmit the output signal to the first data input subcircuit and the second data input subcircuit; the first data input sub-circuit is electrically connected to the second data input sub-circuit and a first data signal terminal, and is turned on or off according to the output signal transmitted from the calculation sub-circuit; and when in an on state, it transmits a first data signal input from the first data signal terminal to the first light-emitting control sub-circuit and the second light-emitting control sub-circuit to drive the light-emitting unit to emit light; the second data input sub-circuit is electrically connected to a second data signal terminal, and is turned on or off according to the output signal transmitted from the calculation sub-circuit; and when in an on state, the second data signal input from the second data signal terminal is transmitted to the first light-emitting control sub-circuit and the second light-emitting control sub-circuit to drive the light-emitting unit to emit light; A display device characterized by:

16. the first light-emitting control sub-circuit includes a first driving transistor, the gate of which is electrically connected to the second light-emitting control sub-circuit, the first data input sub-circuit, and the second data input sub-circuit; the drain of the first driving transistor is electrically connected to the second light-emitting control sub-circuit and the first power supply voltage terminal; the source of the first driving transistor is electrically connected to the second light-emitting control sub-circuit, the anode of the light-emitting unit, the storage element, and the calculation sub-circuit; and the first driving transistor is used to drive the light-emitting unit to emit light; the second light-emitting control sub-circuit includes a second driving transistor, the gate of which is electrically connected to the gate of the first driving transistor, the first data input sub-circuit, and the second data input sub-circuit; the source of which is electrically connected to the drain of the first driving transistor and the first power supply voltage terminal; the drain of which is electrically connected to the source of the first driving transistor, the anode of the light-emitting unit, the storage element, and the calculation sub-circuit; and the second driving transistor is used to drive the light-emitting unit to emit light; 16. The display device according to claim 15.

17. the storage element includes a storage capacitor, a first end of the storage capacitor is electrically connected to the source of the first driving transistor, the anode of the light-emitting unit, the drain of the second driving transistor and the calculation sub-circuit, and a second end of the storage capacitor is grounded, the storage element is used to be charged and store electrical energy; 17. The display device according to claim 16.

18. the operational subcircuit includes an amplifier, a 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 a voltage at an electrical connection point between the storage element and the operational subcircuit; an inverting input terminal of the amplifier is used to input a reference voltage received at the reference voltage terminal; an output terminal of the amplifier is electrically connected to the first data input subcircuit and the second data input subcircuit; the amplifier compares the voltage at the electrical connection point between the storage element and the operational subcircuit with the reference voltage received at the reference voltage terminal to obtain an output signal, and is used to transmit the output signal to the first data input subcircuit and the second data input subcircuit; 18. The display device according to claim 17.

19. the first data input sub-circuit includes a first switch transistor, a gate of the first switch transistor is electrically connected to the output terminal of the amplifier and the second data input sub-circuit, a source of the first switch transistor is electrically connected to the first data signal terminal, and a drain of the first switch transistor is electrically connected to the gate of the first drive transistor, the gate of the second drive transistor, and the second data input sub-circuit, the first switch transistor is turned on or off according to an output signal transmitted from the output terminal of the amplifier, and is used to transmit a first data signal input from the first data signal terminal to the gate of the first drive transistor and the gate of the second drive transistor in an on state; 20. The display device according to claim 18,

20. the second data input sub-circuit includes a second switch transistor, a gate of the second switch transistor electrically connected to the output terminal of the amplifier and the gate of the first switch transistor, a source of the second switch transistor 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 a drain of the second switch transistor electrically connected to the second data signal terminal, the second switch transistor being turned on or off according to an output signal transmitted from the output terminal of the amplifier, and being used 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 when in an on state; 20. The display device according to claim 19.

Citation Information

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