Display device and driving method thereof

Abstract

The invention provides a display device and a driving method thereof, and the driving method of the display device comprises the steps: determining whether the Nth frame of display picture meets a compensation condition or not according to the gray scale information of the Nth frame of display picture and the gray scale information of the (N-1) th frame of display picture; under the condition that the Nth frame of display picture reaches the compensation condition, compensating the driving voltage corresponding to the Nth frame of display picture; wherein the gray scale information comprises a gray scale value and a voltage value corresponding to the gray scale value. By compensating the driving voltage corresponding to the Nth frame of display picture, the technical problems that the liquid crystal falls and deviates from the correct direction and the improvement effect is poor due to the fact that the liquid crystal driving force is suddenly too large in a short time, and the dynamic display effect of the display device is improved on the premise that the response time is shortened. The liquid crystal is prevented from reversing and deviating from the correct direction due to overlarge driving voltage, and the display effect is effectively improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display device and a driving method thereof. Background Art

[0002] Due to the slow response speed of liquid crystals themselves, problems such as trailing or motion blur may occur when liquid crystal displays show dynamic images. In related technologies, over driving (OD) technology can be used to improve the response time, thereby improving the display effect of dynamic images.

[0003] However, an overly large driving force for liquid crystals in a short period of time may cause domain errors in the liquid crystals, resulting in the liquid crystal orientation deviating from the correct direction, and the improvement effect is not good. Summary of the Invention

[0004] Embodiments of this application provide a display device and a driving method thereof to solve the problem of poor display effect of images caused by long response time of liquid crystals in related technologies.

[0005] To solve the above problems, the technical solutions provided in this application are as follows:

[0006] In a first aspect, this application provides a driving method for a display device, including:

[0007] Determine whether the Nth frame display image reaches a compensation condition according to the gray scale information of the Nth frame display image and the gray scale information of the (N - 1)th frame display image;

[0008] When the Nth frame display image reaches the compensation condition, compensate the driving voltage corresponding to the Nth frame display image;

[0009] Wherein, the gray scale information includes a gray scale value and a voltage value corresponding to the gray scale value.

[0010] In an embodiment, the determining whether the Nth frame display image reaches a compensation condition according to the gray scale information of the Nth frame display image and the gray scale information of the (N - 1)th frame display image includes:

[0011] Obtain a first gray scale value of the Nth frame display image and a first voltage value corresponding to the first gray scale value;

[0012] Obtain a second gray scale value of the (N - 1)th frame display image and a second voltage value corresponding to the second gray scale value;

[0013] When the difference between the first voltage value and the second voltage value is greater than or equal to a first threshold, determine whether the Nth frame display image reaches a compensation condition.

[0014] In one embodiment, determining whether the Nth frame display screen meets the compensation condition according to the grayscale information of the Nth frame display screen and the grayscale information of the (N - 1)th frame display screen includes:

[0015] Determining whether the Nth frame display screen meets the compensation condition when the first voltage value is within the first voltage range, the second voltage value is within the second voltage range, and the difference between the first voltage value and the second voltage value is greater than or equal to the first threshold.

[0016] In one embodiment, the first voltage range is the voltage value corresponding to the grayscale value from 240 to 255, and the second voltage range is the voltage value corresponding to the grayscale value from 0 to 8.

[0017] In one embodiment, before compensating the driving voltage corresponding to the Nth frame display screen, the method further includes:

[0018] Generating a first look-up table according to the driving voltage corresponding to different grayscale values and the compensation voltage corresponding to different grayscale differences, or according to the driving voltage corresponding to different grayscale values and the compensation coefficient corresponding to different grayscale differences.

[0019] In one embodiment, compensating the driving voltage corresponding to the Nth frame display screen includes:

[0020] Obtaining the compensated driving voltage corresponding to the Nth frame display screen from the first look-up table according to the grayscale information of the Nth frame display screen and the grayscale information of the (N - 1)th frame display screen.

[0021] In one embodiment, before compensating the driving voltage corresponding to the Nth frame display screen, the method further includes:

[0022] Generating a second look-up table according to the driving voltage corresponding to different grayscale values;

[0023] Generating a third look-up table according to the compensation voltage corresponding to different grayscale differences or the compensation coefficient corresponding to different grayscale differences.

[0024] In one embodiment, compensating the driving voltage corresponding to the Nth frame display screen includes:

[0025] Obtaining the first target driving voltage and the second target driving voltage corresponding to the Nth frame display screen from the second look-up table and the third look-up table respectively according to the grayscale information of the Nth frame display screen and the grayscale information of the (N - 1)th frame display screen;

[0026] Adding the first target driving voltage and the second target driving voltage to obtain the compensated driving voltage corresponding to the Nth frame display screen.

[0027] In one embodiment, the method further includes:

[0028] In the case that the Nth frame display image does not meet the compensation condition, obtain the driving voltage corresponding to the Nth frame display image from the second look-up table.

[0029] In a second aspect, the present application provides a display device, including:

[0030] A determination module, configured to determine whether the Nth frame display image meets the compensation condition according to the gray-scale information of the Nth frame display image and the gray-scale information of the (N - 1)th frame display image;

[0031] A compensation module, configured to compensate the driving voltage corresponding to the Nth frame display image in the case that the Nth frame display image meets the compensation condition;

[0032] Wherein, the gray-scale information includes a gray-scale value and a voltage value corresponding to the gray-scale value.

[0033] The embodiments of the present application provide a display device and a driving method thereof. The driving method determines whether the Nth frame display image meets the compensation condition according to the gray-scale information of the Nth frame display image and the gray-scale information of the (N - 1)th frame display image; and compensates the driving voltage corresponding to the Nth frame display image in the case that the Nth frame display image meets the compensation condition. By compensating the driving voltage corresponding to the Nth frame display image, at least solves the technical problem that a sudden excessive liquid crystal driving force in a short time can cause domain errors in the liquid crystal, resulting in the liquid crystal tilt deviating from the correct direction and poor improvement effect. The dynamic display effect of the display device avoids the liquid crystal tilt deviating from the correct direction caused by an excessive driving voltage on the premise of shortening the response time, and effectively improves the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0035] Attached Figure 1 is a schematic overall flow chart of the display device driving method in the embodiments of the present application;

[0036] Attached Figure 2 is a schematic specific flow chart of an optional display device driving method in the embodiments of the present application;

[0037] Attached Figure 3It is a schematic diagram of the specific process of another alternative display device driving method in the embodiments of the present application;

[0038] Appendix Figure 4 It is a schematic diagram of the specific process of another alternative display device driving method in the embodiments of the present application;

[0039] Appendix Figure 5 It is a schematic diagram of an alternative first look-up table in the embodiments of the present application;

[0040] Appendix Figure 6 It is a schematic diagram of the specific process of another alternative display device driving method in the embodiments of the present application;

[0041] Appendix Figure 7 It is a schematic diagram of the effect comparison between the embodiments of the present application and the comparative examples;

[0042] Appendix Figure 8 It is a response time waveform diagram between different gray levels of a photodiode in the embodiments of the present application;

[0043] Appendix Figure 9 It is a schematic diagram of a module of an alternative display device in the embodiments of the present application;

[0044] Appendix Figure 10 It is a schematic diagram of a module of another alternative display device in the embodiments of the present application.

[0045] Explanation of the reference numerals in the figure:

[0046] 1. Display device; 100. Determination module; 200. Compensation module; 210. First compensation module; 220. Second compensation module; 230. Third compensation module; 300. Encoder; 400. Frame buffer; 500. Decoder. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative efforts belong to the scope of protection of the present application.

[0048] It will be understood that although the terms "first", "second", etc. may be used herein to describe various components, these components should not be limited by these terms. These components are only used to distinguish one component from another.

[0049] With the continuous development of display technology, users have higher and higher requirements for display effects. In most usage scenarios, the display device shows more dynamic pictures. Therefore, the quality of the dynamic display effect has become an important criterion for users to choose. Since the response speed of liquid crystals themselves is relatively slow, problems such as trailing or motion blur will occur when displaying dynamic pictures. To address the above problems, over-driving technology is used in related technologies to effectively improve the response time and improve the dynamic picture display effect. The principle of over-driving technology is to apply a voltage higher than the target gray level to the first frame of the display picture, so that the liquid crystal has a greater driving force during the rotation process. However, a suddenly excessive driving force of the liquid crystal in a short time will instead cause domain errors in the liquid crystal, that is, the arrangement of liquid crystal molecules becomes uneven under the excessive driving voltage, resulting in inconsistent colors or brightness in the display picture, affecting the image quality. At the same time, the liquid crystal molecules also need time to return to the normal state, and the problem of long response time is not well improved either.

[0050] Referring to Figure 1 As shown, according to the first aspect of the embodiments of the present application, a driving method for a display device is provided, including:

[0051] S100: Determine whether the Nth frame of the display picture meets the compensation condition according to the gray level information of the Nth frame of the display picture and the gray level information of the (N - 1)th frame of the display picture;

[0052] It should be noted that in this embodiment, the gray level information includes the gray level value and the voltage value corresponding to the gray level value. Among them, each gray level value corresponds to a specific voltage value. By controlling this voltage, the arrangement of liquid crystal molecules can be changed, thereby changing the light transmittance and achieving different brightness levels. In addition, the relationship between the gray level value and the voltage value can be linear. In some embodiments of the present application, the gray level value and the voltage value corresponding to it are in a linear relationship. If the voltage value range corresponding to the gray level value is between 0 and 5V, then the voltage values corresponding to the gray level values 0, 1, 2, 3 ··· 127 ··· 253, 254, and 255 can be 0.00V, 0.02V, 0.04V, 0.06V ··· 2.50V ··· 4.96V, 4.98V, and 5.00V. In other embodiments of the present application, the relationship between the gray level value and the voltage value corresponding to it can also be non-linear, and specific designs can be made according to actual situations, which are not limited in the present application.

[0053] On this basis, referring to Figure 2 As shown, in some more specific embodiments of the present application, step S100 includes:

[0054] S110: Obtain the first gray level value of the Nth frame of the display picture and the first voltage value corresponding to the first gray level value;

[0055] S120: Obtain the second gray-scale value of the (N - 1)-th frame display screen and the second voltage value corresponding to the second gray-scale value;

[0056] S130: When the difference between the first voltage value and the second voltage value is greater than or equal to the first threshold, determine whether the N-th frame display screen meets the compensation condition.

[0057] Among them, since what is improved is the dynamic display effect of the liquid crystal, N is an integer greater than 1. By comparing the gray-scale and voltage changes between consecutive frames, the transition situation of the display screen between frames can be analyzed. If the gray-scale or voltage difference between the N-th frame and the (N - 1)-th frame is too large, compensation is required. In some embodiments of the present application, the value range of the first threshold can be between 10 mV and 50 mV. Specifically, it can be 10 mV, 15 mV, 20 mV, 25 mV, 30 mV, 35 mV, 40 mV, 45 mV or 50 mV, etc. In the actual application process, the value range of the first threshold depends on the panel characteristics of the display device and the required display effect. If a faster response time is required to reduce motion blur, a smaller first threshold may be selected to perform compensation more frequently, but a smaller first threshold may cause overcompensation of the display device, that is, compensation is performed frequently even when compensation is not required; and if more stable compensation of the display device is required, a larger first threshold may be selected. At the same time, since unnecessary changes are reduced, the overall power consumption of the display device may be reduced to a certain extent, which helps to improve the reliability and service life of the device. However, an overly large first threshold may also cause failure to perform compensation in a timely manner when compensation is required. Therefore, the first threshold also needs to be selected according to the specific characteristics and application scenarios of the display device to ensure better display effects and device performance.

[0058] More specifically, as shown in Figure 3 In some embodiments of the present application, S100 may also include:

[0059] S140: When the first voltage value is within the first voltage range, the second voltage value is within the second voltage range, and the difference between the first voltage value and the second voltage value is greater than or equal to the first threshold, determine whether the N-th frame display screen meets the compensation condition.

[0060] It should be noted that, in some embodiments of the present application, the first voltage range is the voltage value corresponding to the gray scale values from 240 to 255, and the second voltage range is the voltage value corresponding to the gray scale values from 0 to 8. In some other embodiments, the first voltage range may also be the voltage value corresponding to the gray scale values from 0 to 8, and the second voltage range is the voltage value corresponding to the gray scale values from 240 to 255. Since the gray scale values from 0 to 8 and from 240 to 255 represent states close to full darkness and full brightness respectively, the voltage change from the second voltage range to the first voltage range is relatively large, which is more likely to cause visual artifacts. Therefore, monitoring the voltage change between these two voltage ranges is more helpful for improving the display quality.

[0061] S300: When the Nth frame display screen meets the compensation condition, compensate the driving voltage corresponding to the Nth frame display screen.

[0062] Specifically, referring to Figure 4 As shown, in some embodiments of the present application, before step S300, it further includes:

[0063] S200: Generate a first look-up table according to the driving voltage corresponding to different gray scale values and the compensation voltage corresponding to different gray scale differences, or according to the driving voltage corresponding to different gray scale values and the compensation coefficient corresponding to different gray scale differences.

[0064] Optionally, referring to Figure 5 As shown, a specific embodiment of the first look-up table is provided. Among them, the rows represent the gray scale values of the Nth frame display screen, and the columns represent the gray scale values of the (N - 1)th frame display screen. Each cell V(i, j) in the table can contain multiple values. Specifically, it can contain the required driving voltage and compensation voltage from gray scale value i to gray scale value j; it can also contain the required driving voltage and compensation coefficient from gray scale value i to gray scale value j. When the compensation coefficient is recorded in the table, the required compensation voltage can be obtained by multiplying the driving voltage by the compensation coefficient. At this time, the value range of the compensation coefficient is between 0 and 1. Specifically, it can be 0.7, 0.8, or 0.9, etc.; in addition, it can also contain the required driving voltage and compensation value from gray scale value i to gray scale value j, and the required compensation voltage can be obtained by subtracting the compensation value from the driving voltage.

[0065] On this basis, in step S300, compensating the driving voltage corresponding to the Nth frame display screen includes: obtaining the compensated driving voltage corresponding to the Nth frame display screen from the first look-up table according to the gray scale information of the Nth frame display screen and the gray scale information of the (N - 1)th frame display screen.

[0066] It should be noted that, in the foregoing embodiments, when the Nth frame display screen does not meet the compensation condition, the driving voltage required for the Nth frame display screen can be directly obtained from the first look-up table.

[0067] Optionally, referring to Figure 6 As shown, in some other embodiments of the present application, before compensating the driving voltage corresponding to the Nth frame display picture, the method may further include:

[0068] S200: Generate a second look-up table according to the driving voltages corresponding to different gray-scale values; generate a third look-up table according to the compensation voltages corresponding to different gray-scale differences or the compensation coefficients corresponding to different gray-scale differences.

[0069] It should be noted that the second look-up table may be similar to the first look-up table in the foregoing embodiments, the difference being that the second look-up table only records the driving voltages corresponding to the gray-scale values of the Nth frame display picture and the gray-scale values of the (N - 1)th frame display picture. Correspondingly, the third look-up table records the compensation voltages, compensation coefficients or compensation values, etc. corresponding to the gray-scale values of the Nth frame display picture and the gray-scale values of the (N - 1)th frame display picture.

[0070] On this basis, step S300 may specifically include:

[0071] S310: According to the gray-scale information of the Nth frame display picture and the gray-scale information of the (N - 1)th frame display picture, respectively obtain the first target driving voltage and the second target driving voltage corresponding to the Nth frame display picture from the second look-up table and the third look-up table;

[0072] It should be noted that when the content recorded in the third look-up table is the compensation voltage, the second target driving voltage is a compensation voltage with a polarity opposite to that of the first target driving voltage. At this time, the absolute value of the second target driving voltage is less than the absolute value of the first target driving voltage. Among them, the compensation value of the second target driving voltage can be obtained through the test of the response time waveform or through the dark stripe change of the pixel.

[0073] In some embodiments, when the content recorded in the third look-up table includes the compensation coefficient, the second target driving voltage can be calculated based on the first target driving voltage and the compensation coefficient. At this time, the value range of the compensation coefficient is between -1 and 0. Specifically, the value of the compensation coefficient can be -0.1, -0.2 or -0.3.

[0074] S320: Add the first target driving voltage and the second target driving voltage to obtain the compensated driving voltage corresponding to the Nth frame display picture.

[0075] In this step, it should be noted that the second target driving voltage and the first target driving voltage are connected in series with opposite polarities. When the first target driving voltage is too large, by adding the second target driving voltage and the first target voltage, a driving voltage less than the first target voltage can be output.

[0076] In addition, in this embodiment, when the display screen of the Nth frame does not meet the compensation condition, the driving voltage corresponding to the display screen of the Nth frame is obtained from the second look-up table.

[0077] Combined with the above, in some embodiments of the present application, during the driving process of the display device, the gray-scale value of the previous frame is first recorded, and then according to the relationship between the gray-scale value and the voltage, the gray-scale voltage of the previous frame is obtained. Then the gray-scale value of the current frame is recorded, and the gray-scale voltage of the current frame is obtained according to the gray-scale value. In this embodiment, the voltage threshold a of the previous frame is set, where a is within the voltage range corresponding to the gray-scale values of 0-8, and the voltage threshold b of the current frame is set, where b is within the voltage corresponding to the gray-scale values of 240-255. At the same time, the threshold c for the difference between a and b is set, and the specific value of c is actually set flexibly according to the panel situation. After that, the display device compares the recorded data of the previous and current frames with the thresholds a / b / c, and when all three are satisfied, compensation is performed.

[0078] During the compensation process, different compensation values are set according to the recorded gray-scale difference between the previous and current frames. There are two ways to set the compensation value. One is to increase the compensation coefficient or compensation value on the basis of only one first look-up table, and different compensation coefficients or compensation values are set for different gray-scale changes. It is also possible to add a set of third look-up tables on the basis of setting a set of second look-up tables, and the third look-up table is used to store the compensation coefficient or compensation value.

[0079] Of course, it is also possible to set the compensation coefficient or compensation value only for some set areas, that is, to set the compensation coefficient or compensation value only for some driving voltages in the second look-up table.

[0080] Refer to Figure 7 As shown, it is a display screen diagram obtained by simulating the operation of the display device according to the driving method of the embodiment of the present application, and a comparison diagram of the display screen obtained by the driving method in the related art. It can be seen from the figure that in the display screen of the first frame in the comparative example and the embodiment of the present application, there are dark lines inside the pixels. However, in the display screens of the second and third frames in the embodiment of the present application, the dark lines inside the pixels have almost disappeared. In the comparative example, in the display screen of the second frame, there are still some dark lines inside the pixels, and it is not until the display screen of the third frame that the dark lines tend to disappear. Thus, it can be seen that the liquid crystal response time in the embodiment of the present application is greatly improved.

[0081] More specifically, refer to Figure 8 As shown, a photodiode can be used to measure the response time waveform between different gray scales, and finally the liquid crystal response time of the embodiment of the present application is about 10 ms. Compared with the response time of 25 ms in the comparative example, the driving method of the embodiment of the present application effectively improves the response time.

[0082] Refer to Figure 9 andFigure 10 As shown, according to the second aspect of the present application, a display device 1 is provided for implementing the foregoing driving method. The display device 1 includes a determination module 100 and a compensation module 200.

[0083] Among them, the determination module 100 is configured to determine whether the Nth frame display screen meets the compensation condition according to the grayscale information of the Nth frame display screen and the grayscale information of the (N - 1)th frame display screen; the compensation module 200 is configured to compensate the driving voltage corresponding to the Nth frame display screen when the Nth frame display screen meets the compensation condition. It should be noted that the grayscale information includes the grayscale value and the voltage value corresponding to the grayscale value.

[0084] In addition, in some embodiments of the present application, the display device 1 further includes a frame signal acquisition module for inputting the grayscale information of the Nth frame display screen and the grayscale information of the (N - 1)th frame display screen to the determination module 100. More specifically, referring to Figure 9 and Figure 10 As shown, the frame signal acquisition module includes an encoder 300, a frame buffer 400, and a decoder 500. Among them, the encoder 300 is configured to receive a frame signal and perform encoding and compression on the frame signal. The frame buffer 400 is configured to store the encoded and compressed frame signal. The decoder 500 is configured to read the compressed data from the frame buffer 400 and decode the compressed data into a frame signal and transmit it to the determination module 100. On this basis, the determination module 100 can directly obtain the grayscale information of the Nth frame display screen, and the grayscale information of the (N - 1)th frame display screen can be obtained through the decoder 500.

[0085] More specifically, referring to Figure 9 As shown, in some embodiments of the present application, the compensation module 200 includes a first compensation module 210. The first compensation module 210 at least includes a first storage unit storing a first look-up table, and the first storage unit can be a register or the like.

[0086] More specifically, referring to Figure 10 As shown, in some other embodiments of the present application, the compensation module 200 may also include a second compensation module 220 and a third compensation module 230. The determination module 100 is electrically connected to the third compensation module 230. Among them, the second compensation module 220 at least includes a second storage unit storing a second look-up table, and the third compensation module 230 at least includes a third storage unit storing a third look-up table.

[0087] In addition, in some embodiments of the present application, the compensation module 200 may also include a control unit or a calculation unit, etc., for performing operations to compensate the driving voltage corresponding to the Nth frame display screen.

[0088] In summary, although the present application has been disclosed above in preferred embodiments, the above preferred embodiments are not intended to limit the present application. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. A method for driving a display device, characterized in that: include: Determining whether the Nth frame of the display picture meets the compensation condition according to the grayscale information of the Nth frame of the display picture and the grayscale information of the N-1th frame of the display picture; When the N-th frame display picture meets the compensation condition, compensating the driving voltage corresponding to the N-th frame display picture; The grayscale information includes a grayscale value and a voltage value corresponding to the grayscale value.

2. The driving method according to claim 1, characterized in that: The step of determining whether the Nth frame of the displayed picture meets the compensation condition according to the grayscale information of the Nth frame of the displayed picture and the grayscale information of the N-1th frame of the displayed picture comprises: Acquire a first grayscale value of the Nth frame display picture and a first voltage value corresponding to the first grayscale value; Acquire a second grayscale value of the N-1th frame display picture and a second voltage value corresponding to the second grayscale value; When the difference between the first voltage value and the second voltage value is greater than or equal to a first threshold, it is determined whether the Nth frame display picture meets the compensation condition.

3. The driving method according to claim 2, characterized in that: The step of determining whether the Nth frame of the displayed picture meets the compensation condition according to the grayscale information of the Nth frame of the displayed picture and the grayscale information of the N-1th frame of the displayed picture comprises: When the first voltage value is within a first voltage interval, the second voltage value is within a second voltage interval, and a difference between the first voltage value and the second voltage value is greater than or equal to a first threshold, it is determined whether the Nth frame display image meets a compensation condition.

4. The driving method according to claim 3, characterized in that: The first voltage range is a voltage value corresponding to grayscale values ​​from 240 to 255, and the second voltage range is a voltage value corresponding to grayscale values ​​from 0 to 8.

5. The driving method according to claim 1, characterized in that: Before compensating the driving voltage corresponding to the Nth frame display picture, the method further includes: A first lookup table is generated according to driving voltages corresponding to different grayscale values ​​and compensation voltages corresponding to different grayscale differences, or according to driving voltages corresponding to different grayscale values ​​and compensation coefficients corresponding to different grayscale differences.

6. The driving method according to claim 5, characterized in that: The compensating the driving voltage corresponding to the Nth frame display picture includes: According to the grayscale information of the Nth frame display picture and the grayscale information of the N-1th frame display picture, the compensated driving voltage corresponding to the Nth frame display picture is obtained from the first lookup table.

7. The driving method according to claim 1, characterized in that: Before compensating the driving voltage corresponding to the Nth frame display picture, the method further includes: Generate a second lookup table according to driving voltages corresponding to different grayscale values; A third lookup table is generated according to compensation voltages corresponding to different grayscale differences or compensation coefficients corresponding to different grayscale differences.

8. The driving method according to claim 7, characterized in that: The compensating the driving voltage corresponding to the Nth frame display picture includes: According to the grayscale information of the N-th frame display picture and the grayscale information of the N-1-th frame display picture, respectively acquiring a first target driving voltage and a second target driving voltage corresponding to the N-th frame display picture from the second lookup table and the third lookup table; The first target driving voltage and the second target driving voltage are added together to obtain a compensated driving voltage corresponding to the Nth frame display picture.

9. The driving method according to claim 7, characterized in that: The method further comprises: When the Nth frame display picture does not meet the compensation condition, the driving voltage corresponding to the Nth frame display picture is obtained from the second lookup table.

10. A display device, characterized in that: include: A determination module, used to determine whether the Nth frame of the display picture meets the compensation condition according to the grayscale information of the Nth frame of the display picture and the grayscale information of the N-1th frame of the display picture; A compensation module, used for compensating the driving voltage corresponding to the Nth frame display picture when the Nth frame display picture meets the compensation condition; The grayscale information includes a grayscale value and a voltage value corresponding to the grayscale value.

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