Display device and driving method thereof

Abstract

The invention discloses a display device and a driving method of the display device. The display device comprises a source electrode driving circuit and a time sequence control module. The working time sequence of the source electrode driving circuit comprises effective display time periods corresponding to a plurality of frames of images; the driving method comprises the following steps: in at least one effective display period, the effective period of the first row of pixels in the effective display period is maintained to charge the data line with a pixel gray-scale voltage value, so as to ensure the charging saturation of the data line and reduce the power consumption at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and in particular to a display device and a driving method of the display device. Background Art

[0002] With the development of display technology, the new generation of display screens tends to be large in size and high in resolution. Such display screens require considerable power consumption to charge their data lines, especially when displaying heavy-load images or when the power supply capacity of the power module is limited. For high-resolution and high-frame-rate displays, the charging time provided to the data line is short, and this charging time may not allow the data line to reach the target level.

[0003] The working sequence of the display driving circuit in the display device includes an effective display period (Active period) and a vertical interval period (Vertical porch period / V porch period). The existing data line (source line) is generally charged at the beginning of the Active period. Since it takes a certain time for charging to reach saturation, this method of starting charging at the beginning of the Active period often leads to unsaturated charging of the first row of data lines. Since the display screen has started to display during the Active period, in order to reduce the impact of unsaturated charging of the first row of data lines, the display driving circuit will quickly charge the first row of data lines to saturation, which will cause the voltage of the source line to rise rapidly (see the attached figure). Figure 2 The solid line climbing section corresponding to S1 / S3 / S5 in the figure) causes the power supply voltage value of the power module to drop too much (see Figure 2 The lower convex solid line corresponding to AVDD in the figure) and the transient current value of the power supply of the power module is too large (see Figure 2 The convex solid line portion corresponding to IAVDD in the vertical interval) introduces the EMI (Electromagnetic Interference) problem in the display driving circuit. In order to alleviate the above-mentioned problem, the inventor proposes to perform precharging in the vertical interval period. However, in the existing Active period, each row of pixels is first charged with a first voltage value for a period of time, and then the pixel grayscale voltage is supplied. Under such a driving mode, if the precharging operation is performed, the first row of pixels will start charging the data line at a potential much lower than the precharging level at the beginning of the effective display period, resulting in a huge waste of power consumption, which brings obstacles to reducing power consumption. Summary of the invention

[0004] The object of the present invention is to provide an image display method of a display device, so as to ensure that the corresponding data lines are fully charged when the first row of pixels is displayed, while reducing power consumption.

[0005] To solve the problems of the aforementioned incomplete charging and high power consumption, the present invention is implemented through the following technical solutions:

[0006] A driving method for a display device, the display device including a source driver circuit and a timing control module; the working timing of the source driver circuit includes valid display periods corresponding to a plurality of frames of images;

[0007] The driving method includes: in at least one of the valid display periods, maintaining the valid period of the first row of pixels in the valid display period to charge the data line corresponding to the first row of pixels with the pixel gray-scale voltage value.

[0008] Optionally, in each valid display period, maintaining the valid period of the first row of pixels in the valid display period to charge the data line corresponding to the first row of pixels with the pixel gray-scale voltage value.

[0009] Optionally, the valid display period includes valid periods of a plurality of rows of pixels sequentially turned on in timing, and the valid period of each row of pixels includes a first period and a second period.

[0010] Optionally, the first row of pixels in the valid display period charges the data line corresponding to the first row of pixels with the pixel gray-scale voltage value in both its corresponding first period and second period.

[0011] Optionally, except for the first row of pixels, the remaining rows of pixels in the valid display period charge the data line with a first voltage value and the pixel gray-scale voltage value respectively in their corresponding first period and second period.

[0012] Optionally, the working timing of the source driver circuit further includes a plurality of vertical interval periods, and the vertical interval periods and the valid display periods are arranged at intervals one by one.

[0013] Optionally, the vertical interval period includes a plurality of rows of invalid display periods; the timing control module controls the source driver circuit to pre-charge the data line according to the pixel gray-scale voltage value of the first row of pixels during the vertical interval period.

[0014] Optionally, the timing control module periodically and alternately controls the source driver circuit to output a first voltage value and a pixel gray-scale voltage value to the data line.

[0015] On the other hand, the present invention also provides a display device, the display device including a source driver circuit and a timing control module, and the source driver circuit and the timing control module are used for the driving method as described above to drive the display device to display an image.

[0016] Optionally, the source driver circuit further includes a voltage buffer, a first control unit, and a second control unit. The pixel gray-scale voltage value output by the voltage buffer is controlled by the first control unit; the first voltage value is controlled by the second control unit.

[0017] The present invention has at least one of the following technical effects:

[0018] In the present invention, in at least one of the effective display periods, during the effective period of the first row of pixels in the effective display period, the corresponding data line of the first row of pixels is maintained to be charged with the pixel gray-scale voltage value, which can ensure that the data line corresponding to the first row of pixels is charged to saturation and reduce power consumption.

[0019] In the present invention, in each effective display period, during the effective period of the first row of pixels in the effective display period, the corresponding data line of the first row of pixels is maintained to be charged with the pixel gray-scale voltage value. Thereby, it is ensured that the data line corresponding to the first row of pixels is charged to saturation, and at the same time, power consumption is reduced.

[0020] In the present invention, the first row of pixels in the effective display period charges the corresponding data line of the first row of pixels with the pixel gray-scale voltage value in both its corresponding first period and second period. Thereby, it is ensured that the data line corresponding to the first row of pixels is charged to saturation, and at the same time, power consumption is reduced.

[0021] In the present invention, the data line is pre-charged in the vertical blanking period to obtain a pre-charge voltage. Thereby, the voltage in the data line corresponding to the first row of pixels starts to be quickly charged from the pre-charge voltage and reaches the display pixel saturation voltage at the beginning of the effective display period. It can not only solve the problem that the data line corresponding to the first row of pixels is not charged to saturation, improve the image display effect of the display device, but also make the power supply voltage value decrease less, improve the power supply stability, and further improve the image display effect of the display device; it can also greatly reduce the power supply transient current value, solve the EMI problem caused by the too large power supply transient current value, and will not generate electromagnetic interference to other chips or circuits in the display driver circuit, enhancing the system working stability.

[0022] After pre-charging the data line with the pixel gray-scale voltage value in the vertical blanking period, during the effective display period, the data line of the first row of pixels is maintained to be charged with the pixel gray-scale voltage value. Such a charging method can enable the data line of the first row of pixels to obtain the desired pre-charge voltage from the pre-charging process and directly continue to be charged to the display pixel saturation voltage from the level of the desired pre-charge voltage, rather than being charged to the display pixel saturation voltage with a first voltage value much lower than the pre-charge voltage level, solving the problem of increased charging power consumption caused by the unreasonable pre-charge voltage potential after pre-charging the data line corresponding to the first row of pixels. Description of the Drawings

[0023] Figure 1 The charging timing diagram of the data line for the driving method of the display device provided by an embodiment of the present invention;

[0024] Figure 1a A partial enlarged schematic diagram in the charging timing diagram of the data line for the driving method of the display device provided by an embodiment of the present invention;

[0025] Figure 2 The pre-charging timing diagram of the data line for the image display method of the display device provided by an embodiment of the present invention;

[0026] Figure 3 The timing diagram for maintaining charging with a first voltage value after pre-charging the data line for the image display method of the display device provided by an embodiment of the present invention;

[0027] Figure 4 The structural block diagram of the display device provided by an embodiment of the present invention;

[0028] Figure 5 The main circuit structure schematic diagram of the power supply driving circuit provided by an embodiment of the present invention. Detailed implementation manners

[0029] The following further elaborates on a display device and a driving method of the display device proposed by the present invention in conjunction with the accompanying drawings and specific implementation manners. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are in a very simplified form and all use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features, and advantages of the present invention more obvious and understandable, please refer to the accompanying drawings. It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0030] As Figure 1 and Figure 1a shown, a driving method of a display device provided in this embodiment, as Figure 4 shown, the display device includes a source driving circuit 110 and a timing control module 130; the working timing of the source driving circuit 110 includes an effective display period corresponding to a plurality of frames of images (which can be referred to Figure 1the gray area represented by Active); the driving method includes: in at least one of the effective display periods, the effective period t1 of the first row of pixels in the effective display period maintains charging the data line (source line) corresponding to the first row of pixels with the pixel gray-scale voltage value.

[0031] After pre-charging is turned on during the vertical blanking period, if the driving of all rows of pixels is charged according to the same voltage setting, it is easy to cause an abnormal drop in the potential that has been pre-charged on the source line when the first row of pixels is turned on during the effective display period Active, specifically as Figure 3 shown. This drop causes the charging of the first row of pixels to start pre-charging again from a potential far lower than the pre-charged potential. This not only cannot ensure that the data line can be charged to saturation when the first row of pixels is displayed, but also results in a great waste of power consumption. In this embodiment, by maintaining charging the data line corresponding to the first row of pixels with the pixel gray-scale voltage value during the effective period of the first row of pixels in at least one of the effective display periods, the problem of unsaturated charging of the data line corresponding to the first row of pixels is solved, and the charging power consumption is saved.

[0032] In some other embodiments, in each effective display period, the effective period of the first row of pixels in the effective display period maintains charging the data line corresponding to the first row of pixels with the pixel gray-scale voltage value. Thereby, the problem of unsaturated charging of the data lines corresponding to all the first row of pixels in the display device is solved, the image display effect of the display device is improved, and the charging power consumption is further saved.

[0033] Please continue to refer to Figure 1 shown, the effective display period includes the effective periods of several rows of pixels sequentially turned on in time sequence (which can be referred to as the labels t1 to tn shown in Figure 1 ), and the effective period of each row of pixels includes a first period and a second period. For example: the effective period t1 of the first row of pixels includes a first period t11 and a second period t12; the effective period t2 of the second row of pixels includes a first period t21 and a second period t22,

[0034] the effective period tn of the nth row of pixels includes a first period tn1 and a second period tn2.

[0035] In this embodiment, the first row of pixels in the effective display period charges the data line corresponding to the first row of pixels with the pixel gray-scale voltage value during both its corresponding first period t11 and second period t12.

[0036] In this embodiment, please continue to refer to Figure 1 shown, except for the effective period t1 of the first row of pixels, in the remaining rows of pixels in this effective display period, during their corresponding first periods (which can be referred to as Figure 1as shown by reference numerals t21 to tn1) and a second time period (which can be referred to as Figure 1 as shown by reference numerals t22 to tn2) charge the data lines of the corresponding pixels with a first voltage value and a pixel gray-scale voltage value respectively. Thus, the voltage in the data lines corresponding to the first-row pixels can reach the display pixel saturation voltage, and the display device can normally display the desired image and reduce power consumption.

[0037] In this embodiment or some other embodiments, in combination with Figure 2 as shown, the working timing of the source driver circuit further includes a plurality of vertical blanking periods (which can be referred to as Figure 2 the Vporch region shown in ), and the vertical blanking periods and the effective display periods are arranged at intervals one by one.

[0038] The vertical blanking period includes a plurality of rows of ineffective display periods (which can be referred to as Figure 2 reference numerals BP1 to BPn, FP1 to FPm shown in, and the period from the start of BP1 to the start of the effective display period Active is an ineffective display period for one row); the timing control module controls the source driver circuit to pre-charge the data lines corresponding to the first-row pixels during the vertical blanking period according to the pixel gray-scale voltage value of the first-row pixels.

[0039] It can be understood that in this embodiment, by pre-charging the data lines during the vertical blanking period, a pre-charge voltage V0 (which can be referred to as Figure 2 the dotted curve D1 shown in ) is obtained. Thus, when the effective display period starts, the voltage in the data lines corresponding to the first-row pixels can quickly reach the display pixel saturation voltage by charging with the pixel gray-scale voltage value V1 based on the pre-charge voltage V0, completely solving the problem of incomplete charging of the first-row data lines and improving the image display effect of the display device.

[0040] Figure 2 The solid curves (S1 / S3 / S5) in represent not performing the pre-charging described in the present invention and directly charging the first-row data lines during the first-row effective display period. The voltage value of the first-row data lines cannot reach the display pixel saturation voltage during the first-row effective display period. By comparing with the dotted curve D1, it can be seen that when the first-row effective display period starts, the first-row data lines can quickly reach the display pixel saturation voltage by charging based on the pre-charge voltage, improving the image display effect of the display device, reducing the burden on the power supply module or the external power supply, and saving the charging power consumption of the external power supply.

[0041] Please continue to refer to Figure 2 as shown, Figure 2 the deeply concave solid line in represents a large drop in the power supply voltage value caused by not performing the pre-charging described in the present invention. Figure 2The thick solid convex line represents that without performing the pre-charging described in the present invention, the value of the power supply transient current is very large, resulting in electromagnetic interference. Figure 2 The dotted curve D2 in [Figure] is the curve of the power supply voltage AVDD of the external power supply of the display device after pre-charging the source line during the vertical blanking period. It can be seen from the change trend of the dotted curve D2 and the comparison with the solid line that by pre-charging during the vertical blanking period, the peak value of the change and fluctuation of the power supply voltage AVDD during the pre-charging and effective display periods is greatly reduced, improving the power supply stability and further enhancing the image display effect of the display device.

[0042] Figure 2 The dotted curve D3 in [Figure] is the curve of the power supply current I_AVDD of the external power supply of the display device after pre-charging the source line during the vertical blanking period. It can be seen from the change trend of the dotted curve D3 and the comparison with the solid line that by pre-charging during the vertical blanking period, the peak value of the change and fluctuation of the power supply current I_AVDD during the pre-charging and effective display periods is greatly reduced. This solves the EMI problem caused by the excessive value of the power supply transient current and will not generate electromagnetic interference to other chips or circuits in the peripheral circuit. However, as Figure 3 shown, after pre-charging the data line during the vertical blanking period, a pre-charge voltage V0 is obtained. Then, during the effective display period, the data line when displaying the first row of pixels is continuously charged to saturation with the conventional first voltage value V2, which will result in power consumption waste.

[0043] Specifically, generally, for a display device, during the first period t1 in the effective display period, the conventional method is to charge with the first voltage value V2. However, the first voltage value V2 is much lower than the pre-charge voltage level V0. Therefore, after obtaining the pre-charge voltage V0, at the beginning of the effective display period, continuing to charge the data line of the first row of pixels with the conventional first voltage value V2 is equivalent to the voltage of the data line of the first row of pixels needing to be charged from the level of the first voltage value V2, which is much lower than the pre-charge voltage level V0, to saturation. Such a method consumes more power than directly charging from the pre-charge voltage V0 level to saturation, and there may still be a problem that the data line when displaying the first row of pixels may not be fully charged.

[0044] In this embodiment, after pre-charging the data line during the vertical blanking period and entering the effective display period, it is adjusted to directly charge the data line of the first row of pixels with the pixel gray-scale voltage value V1. Since the pixel gray-scale voltage value V1 is greater than or equal to the pre-charge voltage V0, thus, the voltage of the data line of the first row of pixels can be directly charged to saturation based on the pre-charge voltage V0. This solves the problem of increased charging power consumption caused by the unreasonable pre-charge voltage potential after pre-charging the data line corresponding to the first row of pixels, and can further ensure that the data line corresponding to the first row of pixels is fully charged.

[0045] As Figure 4 shown, this embodiment further provides a display device. The display device 10 includes a display driving circuit and a display screen 140. The display driving circuit includes: a gate driving circuit 120, a source driving circuit 110, and a timing control module 130. The gate driving circuit 120 and the source driving circuit 110 can respectively transmit a scanning signal and display data to the display screen 140. The display screen 140 includes a plurality of pixels arranged in a matrix. Each pixel includes three sub-pixels having three colors of red (R), green (G), and blue (B). The timing control module 130 can control the operations of the gate driving circuit 120 and the source driving circuit 110 to display an image on the display screen 140. As Figure 1 shown, through the control of the gate driving circuit 120 and the scanning line, each sub-pixel can receive display data from the source driving circuit 110 through a data line. In the display device 10, most of the power consumption comes from the display screen 140. In each display cycle, display data with different voltage levels can charge or discharge the data line and requires a large amount of charge. Each data line is coupled to a column of sub-pixels. Therefore, there is a large amount of parasitic capacitance on the data line, especially for a large-size or high-resolution display screen 140.

[0046] In this embodiment, the source driving circuit 110 and the timing control module 130 are used for the driving method as described above to drive the display device 10 to display an image.

[0047] As Figure 5 shown, the source driving circuit 110 further includes a voltage buffer, a first control unit 1, and a second control unit 2. The pixel gray-scale voltage value V1 output by the voltage buffer is controlled by the first control unit; the first voltage value V2 is controlled by the second control unit 2.

[0048] In this embodiment or some other embodiments, the first control unit 1 and the second control unit 2 are switching switches.

[0049] In this embodiment, the timing control module 130 periodically and alternately controls the source driving circuit 110 to output the pixel gray-scale voltage value V1 and the first voltage value V2 to the data line.

[0050] Combined with Figure 1 and Figure 5 shown, the timing signals required by the display device 10 when displaying an image include: a horizontal synchronization signal HSYNC and a vertical synchronization signal VSYNC. That is, the timing control module 130 outputs a horizontal synchronization signal HSYNC and a vertical synchronization signal VSYNC.

[0051] The horizontal synchronization signal HSYNC is used to indicate the end of the transmission of one line of pixel data of the display screen / LCD screen. When one line of pixel data of the LCD screen is transmitted, the level of the horizontal synchronization signal HSYNC will jump. For example, for a display screen with a resolution of 480RGBx800, the level of HSYNC will jump 800 times when transmitting one frame of image.

[0052] The vertical synchronization signal VSYNC is used to indicate the end of the transmission of one frame of pixel data of the display screen. Each time one frame of pixel data is transmitted, the level of the vertical synchronization signal VSYNC will jump. Here, "frame" is the unit of an image. One image is one frame. In a liquid crystal display, one frame refers to all the liquid crystal pixels of a complete screen.

[0053] Please continue to refer to Figure 1 and Figure 4 As shown in, during the invalid display period, the timing control module 130 can control the voltage input into the data line by inputting a first driving enable signal EN_SOP and a second driving enable signal EN_PRE into the source driver circuit 110.

[0054] When the first driving enable signal EN_SOP jumps from the low level to the high level, the second driving enable signal EN_PRE remains at the low level, enabling the data line corresponding to the first row of pixels to be turned on for charging. And when the first driving enable signal EN_SOP jumps from the low level to the high level, the first control unit 1 in the source driver circuit 110 is controlled to close. At this time, the second driving enable signal EN_PRE remains at the low level, the second control unit 2 is turned off, and the source driver circuit 110 inputs the pixel gray-scale voltage with the pixel gray-scale voltage value V1 processed by the voltage buffer into the data line corresponding to the first row of pixels for charging.

[0055] After that, during the adjacent valid display period, the first driving enable signal EN_SOP still remains at the high level state, the second driving enable signal EN_PRE still remains at the low level, and the source driver circuit 110 continues to input the pixel gray-scale voltage into the data line corresponding to the first row of pixels for formal charging and reaches the display pixel saturation voltage.

[0056] Specifically, during the valid period t1 (including the first period t11 and the second period t12) of the first row of pixels in the valid display period, the first driving enable signal EN_SOP still remains at the high level state, the second driving enable signal EN_PRE still remains at the low level, and the source driver circuit 110 inputs the first voltage with the first voltage value V2 into the data line corresponding to the first row of pixels for formal charging and reaches the display pixel saturation voltage.

[0057] In this embodiment, except for the effective period t1 of the first row of pixels, during the effective periods of the remaining rows of pixels in the effective display period (which can be referred to as Figure 1 as indicated by reference numerals t2 to tn in Figure 1 ), the first period (which can be referred to as Figure 1 as indicated by reference numerals t21 to tn1 in

[0058] ), and the second period (which can be referred to as Figure 1 as indicated by reference numerals t22 to tn2 in Figure 1 ), the data lines corresponding to the pixels are charged with a first voltage having a first voltage value V2 and a pixel gray-scale voltage having a pixel gray-scale voltage value V1, respectively.

[0059] That is, during the first period (which can be referred to as Figure 1 as indicated by reference numerals t2 to tn in Figure 1 ), the second driving enable signal EN_PRE jumps from a low level to a high level, the second control unit 2 is closed, and when the first driving enable signal EN_SOP changes from the high level to the low level, the first control unit 1 is disconnected, so that the corresponding data line is turned on and charged with a first voltage having a first voltage value V2.

[0060] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0061] It should be noted that the devices and methods disclosed in the embodiments of this article can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of devices, methods, and computer program products according to multiple embodiments of this article. In this regard, each block in the flowchart or block diagram can represent a module, program, or part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0062] In addition, the functional modules in each embodiment of this article can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0063] Although the content of the present invention has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A driving method of a display device, the display device including a source driving circuit and a timing control module; characterized in that, The working timing sequence of the source driving circuit includes valid display periods corresponding to a plurality of frames of images. The driving method includes: in at least one of the valid display periods, during the valid period of the first row of pixels in the valid display period, maintaining charging the data line corresponding to the first row of pixels with the pixel gray-scale voltage value.

2. The driving method according to claim 1, wherein In each valid display period, during the valid period of the first row of pixels in the valid display period, maintaining charging the data line corresponding to the first row of pixels with the pixel gray-scale voltage value.

3. The driving method according to claim 1 or 2, characterized in that, The valid display period includes valid periods of a plurality of rows of pixels sequentially turned on in time sequence, and the valid period of each row of pixels includes a first period and a second period.

4. The driving method according to claim 3, characterized in that, The first row of pixels in the valid display period charges the data line corresponding to the first row of pixels with the pixel gray-scale voltage value during both its corresponding first period and second period.

5. The driving method according to claim 4, wherein Except for the first row of pixels, in the remaining rows of pixels in the valid display period, charge the data line with a first voltage value and the pixel gray-scale voltage value respectively during their corresponding first period and second period.

6. The driving method according to any one of claims 1 to 5, characterized in that The working timing sequence of the source driving circuit further includes a plurality of vertical blanking periods, and the vertical blanking periods and the valid display periods are arranged at intervals one by one.

7. The driving method according to claim 6, wherein The vertical blanking period includes a plurality of rows of invalid display periods; the timing control module controls the source driving circuit to pre-charge the data line according to the pixel gray-scale voltage value of the first row of pixels during the vertical blanking period.

8. The driving method according to claim 1, characterized in that, The timing control module periodically and alternately controls the source driving circuit to output a first voltage value and a pixel gray-scale voltage value to the data line.

9. A display device, the display device comprising a source driver circuit and a timing control module, characterized in that, The source driving circuit and the timing control module are used for the driving method according to any one of claims 1 to 9 to drive the display device to display an image.

10. The display device according to claim 9, wherein The source driving circuit further includes a voltage buffer, a first control unit, and a second control unit, and the pixel gray-scale voltage value output by the voltage buffer is controlled by the first control unit; the first voltage value is controlled by the second control unit.

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