Driving device, driving method and display device

Abstract

The application discloses a driving device, a driving method and a display device, which comprise a control module, the control module is configured to acquire a scanning signal timing of a display panel and generate a control instruction based on the scanning signal timing; a voltage generation module, the voltage generation module is connected with the control module, the voltage generation module is configured to generate a reference common voltage and generate a feedback voltage in response to the control instruction; and a compensation circuit, the compensation circuit is connected with the voltage generation module, the compensation circuit is configured to generate a target common voltage according to the reference common voltage and the feedback voltage. The driving device provided by the application can generate a corresponding feedback voltage according to the scanning signal timing, so that the reference common voltage is compensated, the problem of horizontal stripe display of the display panel is avoided, and the display effect of the display panel is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of liquid crystal display, and particularly relate to a driving device, a driving method and a display device. BACKGROUND

[0002] In-cell touch is a new touch technology that integrates touch sensors into a liquid crystal display panel. Compared with other touch technologies, in-cell touch has the advantages of high integration, thin module thickness, narrow glass frame and low cost. However, the technology may cause horizontal stripe artifacts on the display panel during application. SUMMARY

[0003] Embodiments of the present application provide a driving device, a driving method and a display device to solve the technical problem of horizontal stripe artifacts on the display panel in the prior art.

[0004] To solve the above technical problem, embodiments of the present application disclose the following technical solutions:

[0005] In a first aspect, a driving device is provided, comprising:

[0006] a control module configured to obtain a scan signal timing of a display panel and generate a control instruction based on the scan signal timing;

[0007] a voltage generation module connected to the control module, the voltage generation module being configured to generate a reference common voltage and generate a feedback voltage in response to the control instruction;

[0008] a compensation circuit connected to the voltage generation module, the compensation circuit being configured to generate a target common voltage according to the reference common voltage and the feedback voltage.

[0009] In combination with the first aspect, the control instruction includes a compensation signal and a compensation value, the voltage generation module generates the feedback voltage in response to the compensation signal, and the value of the feedback voltage is equal to the compensation value.

[0010] In combination with the first aspect, the control module obtains the compensation value and a node to be compensated based on the scan signal timing.

[0011] The control module generates the control instruction based on the node to be compensated and the compensation value.

[0012] In combination with the first aspect, the scan signal timing includes a to-be-compensated part, and the voltage generation module generates the feedback voltage based on the timing of the to-be-compensated part.

[0013] The feedback voltage is configured to increase or decrease the reference common voltage.

[0014] In conjunction with the first aspect, the voltage generation module includes a first voltage output terminal and a second voltage output terminal, wherein the first voltage output terminal is configured to output the feedback voltage, and the second voltage output terminal is configured to output the reference common voltage.

[0015] In conjunction with the first aspect, the compensation circuit includes a compensation chip, which includes a first voltage input terminal, a second voltage input terminal, and a third voltage output terminal. The first voltage input terminal is connected to the first voltage output terminal, the second voltage input terminal is connected to the second voltage output terminal, and the first voltage output terminal is also connected to the third voltage output terminal.

[0016] In conjunction with the first aspect, the compensation circuit further includes a first resistor, a second resistor, a third resistor, and a capacitor;

[0017] One end of the capacitor is connected to the first voltage output terminal, and the other end is connected to one end of the first resistor, and the other end of the first resistor is connected to the first voltage input terminal.

[0018] The two ends of the second resistor are respectively connected to the other end of the first resistor and the third voltage output terminal;

[0019] The third resistor is connected to the third voltage output terminal.

[0020] In conjunction with the first aspect, the display panel further includes a timing controller configured to generate the scan signal timing, and the voltage generation module generates the reference common voltage based on the scan signal timing.

[0021] Secondly, a driving method is provided, the method comprising:

[0022] Obtain the timing sequence of the scan signal;

[0023] The portion of the scan signal to be compensated is obtained based on the timing of the scan signal.

[0024] Generate a reference common voltage and generate control commands based on the timing nodes of the part to be compensated;

[0025] A feedback voltage is generated according to the control command;

[0026] A target common voltage is generated based on the feedback voltage and the reference common voltage.

[0027] Thirdly, a display device is provided, the display device comprising a display panel as described in any one of the first aspects, or the display device employs a driving method as described in the second aspect to compensate for a reference common voltage of the display panel.

[0028] One of the above technical solutions has the following advantages or beneficial effects:

[0029] Compared with existing technologies, this application provides a driving device comprising: a control module configured to acquire the scanning signal timing of a display panel and generate control commands based on the scanning signal timing; a voltage generation module connected to the control module, configured to generate a reference common voltage and generate a feedback voltage in response to the control commands; and a compensation circuit connected to the voltage generation module, configured to generate a target common voltage based on the reference common voltage and the feedback voltage. The driving device provided by this application can generate a corresponding feedback voltage according to the scanning signal timing, thereby compensating for the reference common voltage, thus avoiding the problem of horizontal stripes and unevenness on the display panel and improving the display effect of the display panel.

[0030] This application also provides a driving method, which includes: acquiring a scanning signal timing sequence; acquiring the portion of the scanning signal to be compensated based on the scanning signal timing sequence; generating a reference common voltage and generating control commands based on the timing nodes of the portion to be compensated; generating a feedback voltage according to the control commands; and generating a target common voltage based on the feedback voltage and the reference common voltage. The driving method provided in this application generates a corresponding feedback voltage by acquiring the scanning signal timing sequence, thereby compensating the reference common voltage. The compensated reference common voltage is then input into the display module, thus avoiding horizontal stripe distortion on the display panel and improving the display effect. Attached Figure Description

[0031] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of module connections provided in an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the circuit connection structure provided in the embodiments of this application;

[0034] Figure 3 A partial structural diagram of the display panel provided in an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the scanning signal timing provided in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the method flow provided in the embodiments of this application. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] Those skilled in the art have noted that the existing liquid crystal display field includes a variety of display touch technologies. Among them, In-cell touch is a new type of touch technology that combines touch sensors with liquid crystal display panels in LCD display touch modules. Compared with other previous touch technologies, it has the advantages of high integration, thin module thickness, narrow glass bezel, and low cost. Its share in small and medium-sized display touch module applications (Mobile phones, Notebooks, Tablets, automotive, etc.) is gradually increasing.

[0039] like Figure 3 As shown, the In-cell Touch principle is essentially a time-division multiplexing of the VCOM electrodes, which cuts the COM electrodes in the display panel into small squares. Figure 3 Each small square in the diagram represents a touch sensor, and each touch panel is independently connected to a touch circuit. V1-V48 represent different VCOM voltages, and H1-H80 represent different horizontal reference signals. Touch panels in the same row use the same VCOM voltage signal, and touch panels in the same column use the same horizontal reference signal. Figure 3In this context, FPC stands for Flexible Printed Circuit, and PCB stands for Printed Circuit Board. The operation of a touch panel involves the following two stages:

[0040] During the display phase, the voltage of all touch panels is equal to the same VCOM voltage, which acts as the COM reference electrode during normal display.

[0041] During the touch phase, each touch panel is independent of the others. It converts the changes in capacitance generated by external interactions into touch point coordinates to complete the touch reporting action.

[0042] However, In-cell displays also have some issues during application, such as horizontal stripe distortion. During the display phase, the VCOM level is affected by coupling from the gate line, causing VCOM voltage shifts, which can lead to distortion in the display.

[0043] The following is a step-by-step explanation of the causes:

[0044] like Figure 4 For example, G46-G55 represent the GOA timing sequence within the display panel. During normal operation, these are continuous square waves transmitted through stages, with adjacent gate lines spaced by a phase interval H, where H is a constant. The high-level width of each square wave is 4H. Therefore, the coupling generated by the falling edge of G46 is equal in magnitude and opposite in direction to the coupling of the rising edge of G50, thus canceling each other out. However, the falling edge of G47 should cancel out the coupling of the rising edge of G51. But because the first and second touch sensors are independent, they cannot cancel out between different COM electrodes. Furthermore, due to the opposite coupling direction, the coupling of the VCOM level is more severe. In some images (such as flicker images), white horizontal lines, i.e., sensor lines, can be seen at the boundaries of the touch sensors.

[0045] For non-touch display modules, simply adding a compensation circuit is sufficient. However, the working principle of In-cell displays dictates that the VCOM voltage offset problem cannot be solved solely by using a compensation circuit. To address this challenge, this application proposes a technical solution that combines a processing module to determine the coupling time and position through synchronous GOA timing, and then uses a compensation circuit to compensate for the VCOM level.

[0046] The specific implementation methods of this application are illustrated below through examples:

[0047] like Figure 1 As shown in the figure, this application embodiment provides a display panel, including: a control module, a voltage generation module, a compensation circuit, and a display module.

[0048] like Figure 1 As shown, specifically, the control module is configured to generate control commands based on the acquired scan signal timing. After acquiring the scan signal timing, the control module calculates the nodes where coupling may occur based on the scan signal timing, and generates control commands based on the node positions and coupling conditions. The control module may include functional modules with built-in computing chips, such as microprocessors and MCU (Microcontroller Unit) units. These functional modules can receive the scan signal timing and autonomously calculate the coupling conditions in the scan signal timing by editing the corresponding computing program to generate control commands. An MCU unit is a chip that integrates a processor core, memory, and peripheral device interfaces. MCU units can perform various tasks and control other peripheral devices. In addition, MCU units also include the following functional modules and uses:

[0049] Central Processing Unit (CPU): An MCU module contains one or more central processing unit cores, which can be used to perform computing and control tasks;

[0050] Memory: MCU modules typically integrate flash memory or EEPROM (Electrically Erasable Programmable Read-Only Memory) for storing code and data. They may also include RAM (Random Access Memory) for temporarily storing calculation results and temporary data.

[0051] Input / Output Interfaces: The MCU module has various input / output interfaces that allow communication with other devices. These include General Purpose Input / Output (GPIO) pins for reading external signals or driving external devices. Communication interfaces may also be included, such as a Serial Peripheral Interface (UART), an SPI (Serial Peripheral Interface), or an I2C (Inter-Integrated Circuit) bus.

[0052] Timer / Counter: MCU modules typically have timers and counters, which can be used for timing, generating timer interrupts, pulse width modulation (PWM), etc.

[0053] ADC / DAC: Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) are important components of an MCU module, used to convert analog signals to digital signals and vice versa. This is crucial for reading analog data from external sensors and generating analog outputs.

[0054] Clock and power management: MCU modules typically include a clock generator to provide a stable system clock. Additionally, they may have power management circuitry to optimize power consumption, extend battery life, and handle sleep and wake-up states.

[0055] Interrupt controller: MCU modules typically have an interrupt controller to handle external interrupt signals and provide the corresponding interrupt service routine to the CPU.

[0056] like Figure 1 As shown, specifically, the voltage generation module is connected to the control module. The voltage generation module is configured to generate a reference common voltage and generate a feedback voltage in response to control commands. The voltage generation module includes a PMIC (Power Management IC) module, which is a chip that integrates power management functions for managing and controlling the power supply, regulation, and protection of the power system. The voltage generation module is connected to the GPIO pins of the control module via the MCU_IN pin. Below are some common functions of PMIC modules:

[0057] Power Supply and Conversion: PMIC modules provide power conversion functions, converting input power (such as battery or external power) into the required output voltage and current to supply other components in the system. PMIC modules can have different DC-DC converters, such as buck, boost, buck-boost, etc., to meet different power requirements;

[0058] Power management and distribution: The PMIC module is responsible for managing and distributing power resources in the system to provide an appropriate power supply. The PMIC module can perform power management on different subsystems, components, or interfaces to meet their power consumption requirements and operating modes;

[0059] Battery Management: For battery-powered systems, PMIC modules typically have battery management functions, which can monitor the battery's state of charge, voltage, current, and temperature, and provide functions such as charging control, battery protection, and status reporting.

[0060] Discharge protection and overvoltage protection: The PMIC module can monitor the output voltage and current and take protective measures when they exceed the safe range; it can trigger overcurrent protection, overtemperature protection, short circuit protection and other functions to ensure the safe operation of the system and components;

[0061] Clock generation and management: The PMIC module may integrate a clock generator to provide a stable system clock and clock signals to other components in the system. It may also have clock management functions for controlling and regulating clock frequency and power states.

[0062] Temperature management: The PMIC module can monitor the chip temperature and take measures as needed, such as power consumption adjustment and temperature alarm, to keep the chip operating within a safe temperature range;

[0063] Interfaces and communication: PMIC modules typically have interfaces for communicating with other components in the system, such as I2C, SPI, UART, etc., so as to communicate and control with the processor or other devices.

[0064] like Figure 1 As shown, specifically, the compensation circuit is connected to the voltage generation module. In response to the received feedback voltage, the compensation circuit superimposes the feedback voltage with the reference common voltage to obtain the target common voltage; the target common voltage is configured to be input to the display module. The function of the compensation circuit is to superimpose the input feedback voltage with the reference common voltage, thereby compensating for the reference common voltage and preventing coupling phenomena after the reference common voltage is input to the display module, which could lead to display abnormalities on the display panel.

[0065] In this embodiment, the control command includes a compensation signal and a compensation value. The voltage generation module generates a feedback voltage in response to the compensation signal, and the magnitude of the feedback voltage is equal to the compensation value. Specifically, the compensation signal triggers the voltage generation module to generate the feedback voltage; that is, the voltage generation module generates a feedback voltage when it receives the compensation signal, and does not generate a feedback voltage when it does not receive the compensation signal. The compensation value, representing the magnitude of the feedback voltage, is determined by the magnitude of the voltage reduction or increase that occurs when the reference common voltage is input to the display module, calculated by the control module. The compensation value can be positive or negative. Generally, when the reference common voltage is reduced after being input to the display module, the compensation value is positive, used to increase the reference common voltage; conversely, when the reference common voltage is increased after being input to the display module, the compensation value is negative, used to reduce the reference common voltage. By controlling the sign and magnitude of the compensation value, the reference common voltage is reasonably compensated to obtain the target common voltage, thereby improving the display panel's display abnormalities and enhancing its display effect.

[0066] In this embodiment, the control module acquires compensation values ​​and nodes to be compensated based on the scanning signal timing. The control module then generates control commands based on the nodes to be compensated and the compensation values. Specifically, after acquiring and measuring the scanning signal timing information, the control module obtains the values ​​of each node of the reference common voltage. By performing joint calculations on multiple timing sequences, it obtains the nodes to be compensated where coupling may occur and their corresponding compensation values. These joint calculations include calibration, compensation curve fitting, and compensation table lookup. The control module then generates corresponding control commands based on the nodes to be compensated and their compensation values.

[0067] In some other embodiments of this application, the scanning signal timing includes a portion to be compensated, and the voltage generation module generates a feedback voltage based on the timing of the portion to be compensated; the feedback voltage is configured to increase or decrease the reference common voltage. Specifically, the voltage generation module can also directly generate the feedback voltage based on the portion to be compensated in the scanning signal. Depending on the magnitude of the increase or decrease in the reference common voltage, the feedback voltage is synthesized or superimposed with the reference common voltage to ensure that the output target common voltage is always maintained within a suitable range, thereby ensuring a stable voltage input to the liquid crystal display panel and preventing stripes from appearing on the display panel.

[0068] like Figure 1 and Figure 2 As shown in this embodiment, the voltage generation module includes a first voltage output terminal VCOM_FB and a second voltage output terminal VCOM. The first voltage output terminal VCOM_FB is configured to output a feedback voltage, and the second voltage output terminal VCOM is configured to output a reference common voltage. Specifically, the voltage generation module only has the function of generating different voltages according to control commands, and does not have the function of superimposing different voltages. Therefore, after generating the feedback voltage and the reference common voltage respectively, the voltage generation module outputs them through the first voltage output terminal VCOM_FB and the second voltage output terminal VCOM. It can be understood that the voltage generation module also includes a command input terminal connected to the control module for receiving control commands. At the same time, the voltage generation module also needs to have the ability to judge and parse the control commands to avoid generating incorrect voltages due to errors in the control commands, thereby affecting the display of the display panel.

[0069] like Figure 1 and Figure 2 As shown in the embodiment of this application, the compensation circuit includes a compensation chip. The compensation chip includes a first voltage input terminal VN-, a second voltage input terminal VN+, and a third voltage output terminal VOUT. The first voltage input terminal VN- is connected to the first voltage output terminal VCOM_FB, the second voltage input terminal VCOM is connected to the second voltage output terminal VCOM, and the first voltage output terminal VCOM_FB is also connected to the third voltage output terminal VOUT. Specifically, the first voltage input terminal VN- is used to obtain the feedback voltage transmitted by the first voltage output terminal VCOM_FB, and the second voltage input terminal VN+ is used to obtain the reference common voltage output by the second voltage output terminal VCOM. The feedback voltage and the reference common voltage are input to the compensation chip, superimposed, and then output through the third voltage output terminal VOUT. Therefore, optional compensation chips that meet the above requirements include dual-channel operational amplifier chips, analog operational processor chips, digital signal processing chips (DSP), and field-programmable gate array (FPGA) chips, etc. These types of chips not only amplify and compensate signals but also perform editing, thereby enabling applications in different usage scenarios.

[0070] like Figure 2 As shown in this embodiment, automatic compensation or enhanced compensation of the operational amplifier can be achieved by connecting the first voltage output terminal VCOM_FB to the third voltage output terminal VOUT. When the two ports are connected, a portion of the operational amplifier scanning signal (an amplified reference common voltage) is fed back to the first voltage input terminal VN- of the chip through the slew feedback mechanism inside the operational amplifier. The feedback signal is formed by connecting the compensation network inside the chip to the input terminal of the operational amplifier. Simultaneously, another purpose of this connection is to compensate for the frequency response, phase delay, and stability of the operational amplifier, thereby improving its performance and reducing errors. By comparing a portion of the output signal with the input signal, the operational amplifier can automatically adjust and correct problems such as nonlinear response, amplitude-frequency characteristics, or phase shift. This feedback mechanism typically achieves lower overall gain error, phase accuracy, and better stability.

[0071] like Figure 1 and Figure 2 As shown in the embodiment of this application, the compensation circuit further includes a first resistor R1, a second resistor R2, a third resistor R3, and a capacitor C. One end of the capacitor C is connected to the first voltage output terminal VCOM_FB, and the other end is connected to one end of the first resistor R1. The other end of the first resistor R1 is connected to the first voltage input terminal VN-. The two ends of the second resistor R2 are respectively connected to the other end of the first resistor R1 and the third voltage output terminal VOUT. The third resistor R3 is connected to the third voltage output terminal VOUT. Specifically, the first voltage input terminal VN- and the second voltage input terminal VN+ are used to receive the feedback voltage and the scanning signal, respectively. After the feedback voltage and the reference common voltage are amplified and processed by the operational amplifier, they are superimposed and output to the third voltage output terminal VOUT. Among them, the capacitor C is used to provide frequency compensation and stabilize the operational amplifier. By selecting an appropriate capacitance value, a compensation network can be introduced at the input terminal of the operational amplifier to change the frequency response and phase characteristics, thereby realizing frequency compensation of the feedback voltage. At the same time, the capacitor C can help improve the stability of the operational amplifier and suppress high-frequency noise. Connecting a capacitor C to the first input terminal VN- is equivalent to a low-pass filter, which can block high-frequency noise, thereby improving the stability of the compensated reference common voltage. The first resistor R1 provides impedance to the operational amplifier, reducing the impact of feedback voltage on it. The second resistor R2 and the third resistor R3 both serve to divide and stabilize the voltage, preventing damage to components from excessive voltage.

[0072] like Figure 2 As shown, the compensation chip also includes a VS- pin and a THERMAL_PAD pin, both of which are grounded to remove the influence of other noises on the circuit.

[0073] like Figure 1 As shown in this embodiment, the display panel further includes a timing controller, which is configured to generate a scan signal timing sequence. The voltage generation module generates a reference common voltage based on the scan signal timing sequence. Specifically, a timing controller is a controller used to control and coordinate the timing order and timing relationships of different modules, components, or signals in a system. Its main functions are as follows:

[0074] Clock signal generation and frequency division: The timing controller can generate a clock signal and divide the frequency of the clock signal using a frequency divider. This can be used to control the operating speed and working clock of various modules in the system.

[0075] Timing signal generation: The timing controller can generate various timing signals, such as reset signals, enable signals, and synchronization signals. These timing signals are used to start, stop, synchronize, and control various modules and components in the system.

[0076] Timing sequence control: A timing controller can control and trigger various operations and events according to a predetermined timing sequence and time interval. It can ensure that different modules execute in the correct order and at the correct time to meet the system's timing requirements.

[0077] Timing detection and adjustment: A timing controller can detect and adjust the timing relationships and time delays of signals in a system. It can maintain signal synchronization and correct phase relationships through techniques such as delay lines and phase-locked loops.

[0078] Timing storage and buffering: The timing controller can provide storage and buffering functions to save and exchange timing-related data and information. This can be used to temporarily store, transform, and transmit timing information to meet the data transmission and timing matching needs between different modules.

[0079] like Figure 5 As shown in the figure, this application embodiment provides a display panel compensation method, the method including:

[0080] S1: Obtain the scanning signal timing.

[0081] Specifically, the scan signal timing is generated by a timing controller. The timing controller generates the corresponding scan signal timing based on the content displayed on the display panel, enabling subsequent modules to generate a reference common voltage based on the scan signal timing. Modules that obtain the scan signal timing include control modules or other processors capable of timing calculations, such as MCUs.

[0082] S2: Obtain the part of the scanning signal to be compensated based on the timing of the scanning signal.

[0083] Specifically, before generating the reference common voltage, the control module first needs to analyze and calculate the timing of the scanning signal to determine whether coupling will occur when the reference common voltage is input into the display module. If coupling occurs, it will affect the display effect of the display panel. The part of the reference common voltage that will have coupling problems, as determined by the analysis, is called the part to be compensated.

[0084] S3: Generate a reference common voltage and generate control commands based on the timing nodes of the part to be compensated.

[0085] Specifically, after calculation, the control module determines the required compensation value of the reference common voltage based on the timing nodes of the part to be compensated and the magnitude of the voltage decrease or increase when the reference common voltage is coupled. The compensation value and the compensation signal are then combined to form the corresponding control command.

[0086] S4: Generate feedback voltage according to control commands.

[0087] Specifically, the voltage generation module receives control commands and analyzes them. It generates a feedback voltage based on the compensation signal and sets the magnitude of the feedback voltage according to the compensation value.

[0088] S5: Generate a target common voltage based on the feedback voltage and the reference common voltage. Specifically, after obtaining the feedback voltage, the compensation module superimposes it with the reference common voltage according to the timing sequence, thereby compensating for any deficiencies in the reference common voltage. After compensating the reference common voltage, the target common voltage is obtained. The target common voltage is then input into the display module to compensate for voltage drops or increases caused by coupling, thus preventing abnormal image display on the display panel and improving the display effect.

[0089] This application provides a display device, which includes a driving device as provided in any of the above embodiments, or the display device uses a driving method as provided in the above embodiments to compensate for the reference common voltage of the display panel.

[0090] The driving device, driving method, and display device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A driving device, characterized in that, include: The control module is configured to acquire the scanning signal timing of the display panel, acquire the compensation value and the node to be compensated based on the scanning signal timing, and then generate a control command including the compensation signal and the compensation value based on the node to be compensated and the compensation value. A voltage generation module is connected to the control module to receive the control command. The voltage generation module is configured to generate a reference common voltage and generate a feedback voltage in response to the compensation signal in the control command. The magnitude of the feedback voltage is equal to the compensation value. A compensation circuit, connected to the voltage generation module, is configured to generate a target common voltage based on the reference common voltage and the feedback voltage.

2. The driving device as described in claim 1, characterized in that, The scanning signal timing includes a portion to be compensated, and the voltage generation module generates the feedback voltage based on the timing of the portion to be compensated; The feedback voltage is configured to increase or decrease the reference common voltage.

3. The driving device as described in claim 1, characterized in that, The voltage generation module includes a first voltage output terminal and a second voltage output terminal. The first voltage output terminal is configured to output the feedback voltage, and the second voltage output terminal is configured to output the reference common voltage.

4. The driving device as described in claim 1, characterized in that, The compensation circuit includes a compensation chip, which includes a first voltage input terminal, a second voltage input terminal, and a third voltage output terminal. The first voltage input terminal is connected to the first voltage output terminal, the second voltage input terminal is connected to the second voltage output terminal, and the first voltage output terminal is also connected to the third voltage output terminal.

5. The driving device as described in claim 4, characterized in that, The compensation circuit also includes a first resistor, a second resistor, a third resistor, and a capacitor; One end of the capacitor is connected to the first voltage output terminal, and the other end is connected to one end of the first resistor, and the other end of the first resistor is connected to the first voltage input terminal. The two ends of the second resistor are respectively connected to the other end of the first resistor and the third voltage output terminal; The third resistor is connected to the third voltage output terminal.

6. The driving device as claimed in claim 1, characterized in that, The display panel also includes a timing controller configured to generate the scanning signal timing, and the voltage generation module generates the reference common voltage based on the scanning signal timing.

7. A driving method, characterized in that, The method includes: Obtain the scanning signal timing of the display panel; obtain the compensation value and the node to be compensated based on the scanning signal timing; A reference common voltage is generated, and a control command is generated based on the compensation node and the compensation value, the control command including the compensation signal and the compensation value; A feedback voltage is generated according to the compensation signal in the control command, and the magnitude of the feedback voltage is equal to the compensation value; A target common voltage is generated based on the feedback voltage and the reference common voltage.

8. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-6, or the display device uses the driving method as described in claim 7 to compensate for the reference common voltage of the display panel.

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