Control method of data driving circuit, data driving circuit and display device

Abstract

The invention discloses a control method of a data driving circuit, the data driving circuit and a display device. The data driving circuit is used for outputting a data signal to a data line of the display panel, the same data line in the display panel is used for transmitting a data signal corresponding to a sub-pixel of one light emitting color, and the control method comprises the following steps: determining a bias current of at least one sub-module in the data driving circuit according to a picture type displayed by the display panel, the types of pictures displayed by the display panel comprise a preset pure color picture and a preset color picture. In the process of switching a picture displayed by the display panel between a pure-color picture and a color picture, the aim of reducing the power consumption of the circuit is fulfilled by changing the magnitude of bias current in the data driving circuit; according to the embodiment of the invention, on the basis of different display picture types, the effect of reducing power consumption can be realized by reducing the bias current during pure color picture.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of data driving circuit control, and particularly relates to a data driving circuit control method, a data driving circuit and a display device. BACKGROUND

[0002] Organic light emitting diodes (OLED) and flat panel display devices based on light emitting diode (LED) technology have been widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to their high image quality, power saving, thin body and wide application range. However, the power consumption of current OLED display products needs to be reduced. SUMMARY

[0003] The embodiments of the present application provide a data driving circuit control method, a data driving circuit and a display device. The data driving circuit is used to output data signals to data lines of a display panel. The same data line in the display panel is used to transmit data signals corresponding to sub-pixels of one light emitting color. According to a picture type displayed by the display panel, a bias current of at least one sub-module in the data driving circuit is determined. The picture type displayed by the display panel includes a preset pure color picture and a preset color picture. During switching of the picture displayed by the display panel between the pure color picture and the color picture, the size of the bias current in the data driving circuit is changed to achieve the purpose of reducing circuit power consumption. According to the embodiments of the present application, the bias current during the pure color picture is reduced to achieve the effect of reducing power consumption based on different display picture types.

[0004] In a first aspect, the embodiments of the present application provide a data driving circuit control method. The data driving circuit is used to output data signals to data lines of a display panel. The same data line in the display panel is used to transmit data signals corresponding to sub-pixels of one light emitting color. The data driving circuit includes a plurality of sub-modules. The control method includes determining a bias current of at least one sub-module in the data driving circuit according to a picture type displayed by the display panel. The picture type displayed by the display panel includes a preset pure color picture and a preset color picture.

[0005] In a possible implementation, the bias current of each of the at least one sub-module in the data driving circuit is different when the display panel displays different picture types; optionally, the plurality of sub-modules in the data driving circuit comprises an input sub-module, an intermediate sub-module and an output sub-module connected in sequence; the bias current of the at least one sub-module in the data driving circuit is determined according to the picture type displayed by the display panel, comprising: the bias current of the input sub-module and / or the bias current of the intermediate sub-module is determined according to the picture type displayed by the display panel; optionally, the bias current of the input sub-module is different when the display panel displays different picture types; and / or the bias current of the intermediate sub-module is different when the display panel displays different picture types; optionally, the bias current of the input sub-module and / or the bias current of the intermediate sub-module is determined according to the picture type displayed by the display panel, comprising: in a case where the display panel displays a preset pure color picture, the absolute value of the bias current of the input sub-module is smaller than the absolute value of the bias current of the input sub-module in a case where the display panel displays a preset color picture; and / or in a case where the display panel displays a preset pure color picture, the absolute value of the bias current of the intermediate sub-module is smaller than the absolute value of the bias current of the intermediate sub-module in a case where the display panel displays a preset color picture; and / or in a case where the display panel switches from displaying a preset color picture to displaying a preset pure color picture, the absolute value of the bias current of the input sub-module decreases, and / or the absolute value of the bias current of the intermediate sub-module decreases; and / or in a case where the display panel switches from displaying a preset pure color picture to displaying a preset color picture, the absolute value of the bias current of the input sub-module increases, and / or the absolute value of the bias current of the intermediate sub-module increases. Optionally, the preset pure color picture comprises a red picture, a green picture or a blue picture; and / or the data driving circuit further comprises a first control sub-module for separately adjusting the bias current of the input sub-module; and / or the data driving circuit further comprises a second control sub-module for synchronously adjusting the bias current of the input sub-module and the intermediate sub-module; optionally, the display panel comprises: a first sub-pixel column, the first sub-pixel column comprising first sub-pixels and second sub-pixels arranged along a second direction, the first sub-pixels and the second sub-pixels having different light-emitting colors, the data signals corresponding to the first sub-pixels and the second sub-pixels in the same first sub-pixel column being provided by different data lines, the data lines extending along the second direction; optionally, each data line in the display panel is used for transmitting data signals corresponding to sub-pixels of one light-emitting color.

[0006] In a possible implementation, the control method of the data driving circuit further includes: obtaining an initial bias current corresponding to the current data driving circuit; determining whether the initial bias current meets a set value of a bias current corresponding to a picture type after the display panel is switched; in a case where the initial bias current does not meet the set value, adjusting the bias current of the input submodule by the first control submodule to obtain an adjusted bias current; determining whether the adjusted bias current meets the set value; and in a case where the adjusted bias current does not meet the set value, adjusting the bias current of the input submodule and the bias current of the intermediate submodule respectively by the second control submodule to obtain a target bias current, so that the target bias current meets the set value.

[0007] In a possible implementation, in a case where the initial bias current does not meet the set value, the adjusting the bias current of the input submodule by the first control submodule to obtain an adjusted bias current includes: in a case where the initial bias current does not meet the set value and the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, decreasing the bias current of the input submodule by the first control submodule to obtain a corresponding first adjusted bias current, the first adjusted bias current being less than the initial bias current; or in a case where the initial bias current does not meet the set value and the display panel is switched from displaying a preset solid color picture to displaying a preset color picture, increasing the bias current of the input submodule by the first control submodule to obtain a corresponding second adjusted bias current, the second adjusted bias current being greater than the initial bias current; optionally, in a case where the initial bias current meets the set value, taking the initial bias current as the target bias current; optionally, in a case where the adjusted bias current meets the set value, taking the adjusted bias current as the target bias current; and optionally, in a case where the adjusted bias current does not meet the set value, adjusting the bias current of the input submodule and the bias current of the intermediate submodule respectively by the second control submodule to obtain the target bias current includes: in a case where the adjusted bias current does not meet the set value and the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, decreasing the bias current in the input submodule and the intermediate submodule by the second control submodule to obtain a corresponding first target bias current, the first target bias current being less than the adjusted bias current; or in a case where the adjusted bias current does not meet the set value and the display panel is switched from displaying a preset solid color picture to displaying a preset color picture, increasing the bias current in the input submodule and the intermediate submodule by the second control submodule to obtain a corresponding second target bias current, the second target bias current being greater than the adjusted bias current.

[0008] In a possible implementation, the control method of the data driving circuit further includes: obtaining an initial bias current and an initial brightness corresponding to the data driving circuit; determining whether the initial bias current satisfies a set current threshold range and whether the initial brightness satisfies a set brightness threshold range; in a case where the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, adjusting, according to different picture types displayed by the display panel, the bias current of the input submodule by using a first control submodule to obtain an adjusted bias current and an adjusted brightness; determining whether the adjusted bias current satisfies the current threshold range and whether the adjusted brightness satisfies the brightness threshold range; in a case where the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, adjusting, according to different picture types displayed by the display panel, the bias current of the input submodule and the bias current of the intermediate submodule respectively by using a second control submodule to obtain a target bias current and a target brightness, so that the target bias current satisfies the current threshold range and the target brightness satisfies the brightness threshold range.

[0009] In a possible implementation, in the case that the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, the bias current in the input submodule is adjusted by the first control submodule according to different types of pictures displayed by the display panel, to obtain an adjusted bias current and an adjusted brightness, including: in the case that the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, the bias current of the input submodule is reduced by the first control submodule, to obtain a corresponding first adjusted bias current or a first adjusted brightness, the first adjusted bias current is less than the initial bias current, and the first adjusted brightness is less than the initial brightness; and / or, in the case that the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset solid color picture to displaying a preset color picture, the bias current of the input submodule is increased by the first control submodule, to obtain a corresponding second adjusted bias current or a second adjusted brightness, the second adjusted bias current is greater than the initial bias current, and the second adjusted brightness is greater than the initial brightness; optionally, in the case that the initial bias current satisfies the current threshold range and the initial brightness satisfies the brightness threshold range, the initial bias current is taken as a target bias current, and the initial brightness is taken as a target brightness; optionally, in the case that the adjusted bias current satisfies the current threshold range and the adjusted brightness satisfies the brightness threshold range, the adjusted bias current is taken as the target bias current, and the adjusted brightness is taken as the target brightness; optionally, in the case that the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, the bias current of the input submodule and the bias current of the intermediate submodule are respectively adjusted by the second control submodule according to different types of pictures displayed by the display panel, to obtain a target bias current and a target brightness, including: in the case that the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, the bias currents in the input submodule and the intermediate submodule are reduced by the second control submodule, to obtain a corresponding first target bias current and a first target brightness, the first target bias current is less than the adjusted bias current, and the first target brightness is less than the adjusted brightness; and / or, in the case that the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset solid color picture to displaying a preset color picture, the bias currents in the input submodule and the intermediate submodule are increased by the second control submodule, to obtain a corresponding second target bias current and a second target brightness, the second target bias current is greater than the adjusted bias current, and the second target brightness is greater than the adjusted brightness.

[0010] In a second aspect, the embodiments of the present application provide a data driving circuit, which is used to output data signals to data lines of a display panel, and the same data line in the display panel is used to transmit data signals corresponding to sub-pixels of one light-emitting color. The data driving circuit comprises a plurality of sub-modules, and further comprises at least one control sub-module. The control sub-module is used to determine a bias current of at least one sub-module in the data driving circuit according to a picture type displayed by the display panel, wherein the picture type displayed by the display panel comprises a preset pure color picture and a preset color picture.

[0011] In a possible implementation, the plurality of sub-modules in the data driving circuit comprises an input sub-module, an intermediate sub-module and an output sub-module connected in sequence. In a case where the display panel displays the preset pure color picture, an absolute value of the bias current of the input sub-module is smaller than an absolute value of the bias current of the input sub-module in a case where the display panel displays the preset color picture; and / or, in the case where the display panel displays the preset pure color picture, an absolute value of the bias current of the intermediate sub-module is smaller than an absolute value of the bias current of the intermediate sub-module in the case where the display panel displays the preset color picture; and / or, in a case where the display panel switches from displaying the preset color picture to displaying the preset pure color picture, the absolute value of the bias current of the input sub-module decreases, and / or, the absolute value of the bias current of the intermediate sub-module decreases, and / or, in a case where the display panel switches from displaying the preset pure color picture to displaying the preset color picture, the absolute value of the bias current of the input sub-module increases, and / or, the absolute value of the bias current of the intermediate sub-module increases. The preset pure color picture comprises a red picture, a green picture or a blue picture; and / or, the at least one control sub-module in the data driving circuit comprises a first control sub-module, which is used to adjust the bias current of the input sub-module individually; and / or, the at least one control sub-module in the data driving circuit comprises a second control sub-module, which is used to adjust the bias currents of the input sub-module and the intermediate sub-module synchronously.

[0012] In a possible implementation, the data driving circuit is used to obtain an initial bias current corresponding to the current data driving circuit; determine whether the initial bias current satisfies a set value of a bias current corresponding to a picture type after switching of the display panel; in a case where the initial bias current does not satisfy the set value, adjust the bias current of the input sub-module through the first control sub-module to obtain an adjusted bias current; determine whether the adjusted bias current satisfies the set value; in a case where the adjusted bias current does not satisfy the set value, respectively adjust the bias current of the input sub-module and the bias current of the intermediate sub-module through the second control sub-module to obtain a target bias current, so that the target bias current satisfies the set value.

[0013] In a possible implementation, the data driving circuit is further configured to, in a case where the initial bias current does not satisfy the set value and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, reduce the bias current of the input submodule by the first control submodule to obtain a corresponding first adjusted bias current, the first adjusted bias current being smaller than the initial bias current; or, in a case where the initial bias current does not satisfy the set value and the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, increase the bias current of the input submodule by the first control submodule to obtain a corresponding second adjusted bias current, the second adjusted bias current being greater than the initial bias current; optionally, in a case where the initial bias current satisfies the set value, the initial bias current is used as the target bias current; optionally, in a case where the adjusted bias current satisfies the set value, the adjusted bias current is used as the target bias current; and optionally, in a case where the adjusted bias current does not satisfy the set value, the bias current of the input submodule and the bias current of the intermediate submodule are respectively adjusted by the second control submodule to obtain the target bias current, including: in a case where the adjusted bias current does not satisfy the set value and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the bias current in the input submodule and the intermediate submodule is reduced by the second control submodule to obtain a corresponding first target bias current, the first target bias current being smaller than the adjusted bias current; or, in a case where the adjusted bias current does not satisfy the set value and the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the bias current in the input submodule and the intermediate submodule is increased by the second control submodule to obtain a corresponding second target bias current, the second target bias current being greater than the adjusted bias current.

[0014] In a possible implementation, the data driving circuit is configured to obtain an initial bias current and an initial brightness corresponding to the data driving circuit, determine whether the initial bias current satisfies a set current threshold range and whether the initial brightness satisfies a set brightness threshold range, in a case where the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, adjust the bias current of the input submodule by the first control submodule to obtain an adjusted bias current and an adjusted brightness according to different picture types displayed by the display panel, determine whether the adjusted bias current satisfies the current threshold range and whether the adjusted brightness satisfies the brightness threshold range, and in a case where the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, adjust the bias current of the input submodule and the bias current of the intermediate submodule by the second control submodule to obtain a target bias current and a target brightness according to different picture types displayed by the display panel, so that the target bias current satisfies the current threshold range and the target brightness satisfies the brightness threshold range.

[0015] In a possible implementation, the data driving circuit is further configured to, in a case where the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset color picture to displaying a preset pure color picture, reduce the bias current of the input submodule by the first control submodule to obtain a corresponding first adjusted bias current or a first adjusted brightness, the first adjusted bias current being less than the initial bias current, and the first adjusted brightness being less than the initial brightness; and / or, in a case where the initial bias current does not satisfy the current threshold range or the initial brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset pure color picture to displaying a preset color picture, increase the bias current of the input submodule by the first control submodule to obtain a corresponding second adjusted bias current or a second adjusted brightness, the second adjusted bias current being greater than the initial bias current, and the second adjusted brightness being greater than the initial brightness; optionally, in a case where the initial bias current satisfies the current threshold range and the initial brightness satisfies the brightness threshold range, the initial bias current is taken as the target bias current, and the initial brightness is taken as the target brightness; optionally, in a case where the adjusted bias current satisfies the current threshold range and the adjusted brightness satisfies the brightness threshold range, the adjusted bias current is taken as the target bias current, and the adjusted brightness is taken as the target brightness; optionally, in a case where the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, the bias current of the input submodule and the bias current of the intermediate submodule are respectively adjusted by the second control submodule according to different picture types displayed by the display panel to obtain the target bias current and the target brightness, including: in a case where the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset color picture to displaying a preset pure color picture, the bias current in the input submodule and the intermediate submodule is reduced by the second control submodule to obtain a corresponding first target bias current and a first target brightness, the first target bias current being less than the adjusted bias current, and the first target brightness being less than the adjusted brightness; and / or, in a case where the adjusted bias current does not satisfy the current threshold range or the adjusted brightness does not satisfy the brightness threshold range, and the display panel is switched from displaying a preset pure color picture to displaying a preset color picture, the bias current in the input submodule and the intermediate submodule is increased by the second control submodule to obtain a corresponding second target bias current and a second target brightness, the second target bias current being greater than the adjusted bias current, and the second target brightness being greater than the adjusted brightness.

[0016] In a third aspect, an embodiment of the present application provides a display device, including a display panel and a data driving circuit according to any one of the second aspect.

[0017] In a possible implementation, the display panel comprises: a first sub-pixel column, the first sub-pixel column comprises first sub-pixels and second sub-pixels arranged along a second direction, the first sub-pixels and the second sub-pixels have different light-emitting colors, data signals corresponding to the first sub-pixels and the second sub-pixels in the same first sub-pixel column are provided by different data lines, and the data lines extend along the second direction; optionally, each data line in the display panel is used to transmit data signals corresponding to sub-pixels of one light-emitting color; optionally, the display panel comprises: a plurality of first sub-pixel columns and a plurality of second sub-pixel columns arranged alternately along a first direction, the first sub-pixel column comprises a plurality of first sub-pixels and a plurality of second sub-pixels arranged alternately along the second direction, and the second sub-pixel column comprises a plurality of third sub-pixels arranged along the second direction; the first sub-pixels, the second sub-pixels, and the third sub-pixels have different light-emitting colors; optionally, the display panel further comprises: a plurality of data lines arranged along the first direction and extending along the second direction, the first sub-pixels in two adjacent first sub-pixel columns are connected to the same data line; or the second sub-pixels in two adjacent first sub-pixel columns are connected to the same data line; optionally, in three adjacent first sub-pixel columns, the first sub-pixels in two first sub-pixel columns on one side and in the middle are connected to the same data line, and the second sub-pixels in two first sub-pixel columns on the other side and in the middle are connected to the same data line; optionally, the display panel further comprises a plurality of pixel circuits arranged along the first direction, each column of pixel circuits comprises a plurality of pixel circuits arranged along the second direction; each data signal line is connected to a column of pixel circuits; a first column of pixel circuits is connected to the first sub-pixels in a first column of first sub-pixel columns, a last column of pixel circuits is connected to the first sub-pixels in a last column of first sub-pixel columns, or the last column of pixel circuits is connected to the second sub-pixels in the last column of first sub-pixel columns; each column of pixel circuits in the remaining odd columns of pixel circuits is connected to the first sub-pixels in two adjacent first sub-pixel columns, or each column of pixel circuits in the remaining odd columns of pixel circuits is connected to the second sub-pixels in two adjacent first sub-pixel columns; the even columns of pixel circuits are connected to the third sub-pixels in the second sub-pixel columns; or each column of first sub-pixel columns is connected to the same column of pixel circuits; each column of second sub-pixel columns is connected to the same column of pixel circuits; the plurality of data lines comprise a first data line, a last data line, and first data lines, second data lines, and third data lines arranged along the first direction between the first data line and the last data line; the first data line is connected to the pixel circuit corresponding to the first sub-pixels in the first column of first sub-pixel columns, each first data line is connected to the pixel circuit corresponding to the first sub-pixels in two adjacent first sub-pixel columns; each second data line is connected to the pixel circuit corresponding to the second sub-pixels in two adjacent first sub-pixel columns; the third data line is connected to the pixel circuit corresponding to the third sub-pixels in one column of second sub-pixel columns; and the last data line is connected to the first sub-pixels in the last column of first sub-pixel columns.Or, the last data line is connected with the pixel circuit corresponding to the second sub-pixel in the last column of the first sub-pixel column.

[0018] The control method of the data driving circuit, the data driving circuit and the display device provided by the embodiments of the present application, the data driving circuit is used for outputting data signals to data lines of a display panel, each data line in the display panel is used for transmitting data signals corresponding to sub-pixels of one light-emitting color, according to a picture type displayed by the display panel, a bias current of at least one sub-module in the data driving circuit is determined, the picture type displayed by the display panel includes a preset pure color picture and a preset color picture; during switching of the picture displayed by the display panel between the pure color picture and the color picture, the purpose of reducing circuit power consumption is achieved by changing the size of the bias current in the data driving circuit; according to the embodiments of the present application, the effect of reducing power consumption can be achieved by reducing the bias current during the pure color picture based on different display picture types. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced, and other drawings can be obtained by those of ordinary skill in the art without creative labor on the premise that they do not pay creative labor.

[0020] Figure 1 is a structure schematic diagram of a display pixel matrix provided by the related art;

[0021] Figure 2a is a structure schematic diagram of a display pixel matrix driven by a data driving circuit provided by the present application;

[0022] Figure 2b is a structure schematic diagram of a display pixel matrix driven by another data driving circuit provided by the present application;

[0023] Figure 2c is a structure schematic diagram of a display pixel matrix driven by still another data driving circuit provided by the present application;

[0024] Figure 2d is a structure schematic diagram of a display pixel matrix driven by yet another data driving circuit provided by the present application;

[0025] Figure 3 is a structure schematic diagram of a data driving circuit provided by the present application;

[0026] Figure 4 is a flowchart of a control method of a data driving circuit provided by the present application;

[0027] Figure 5ais a flowchart of another method for controlling a data driving circuit provided in the present application;

[0028] Figure 5b is a flowchart of another method for controlling a data driving circuit provided in the present application;

[0029] Figure 6 is a structural diagram of another data driving circuit provided in the present application;

[0030] Figure 7 is a structural diagram of a display device provided in the present application. DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to explain the present application, and is not intended to limit the present application. The present application can be implemented without some of the specific details, which will be apparent to those skilled in the art. The following description of the embodiments is merely intended to provide a better understanding of the present application through showing examples of the present application.

[0032] It should be noted that, in this document, the terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are 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 explicitly listed or inherent to such a process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements. The connection can include direct connection or indirect connection.

[0033] The small outline package (SOP) operational amplifier can be configured as a differential amplifier, which monitors the voltage / current at the output end of the SDP driving circuit in real time, and feeds back to the control system to realize closed-loop voltage stabilization.

[0034] The input ends of a plurality of power modules in an input-series output-parallel (ISOP) unit are connected in series, high input voltage is shared, and the problem of single-module voltage withstand limit is solved; the output ends of the modules are connected in parallel, total output current capacity is improved, and system load capacity is enhanced. The ISOP unit is used in a power supply system with high input voltage (such as grid-level power supply) and large output current, and is commonly used in isolated drive circuit design. Through modular design, conversion between high input voltage and low voltage and large current output is realized; the ISOP unit has strong redundancy, and single-module failure does not affect overall operation.

[0035] The smart reactive soft open point (SRSOP) is a dynamic power flow control device for a power distribution network, and realizes flexible scheduling of active / reactive power between feeders through a back-to-back converter. The SRSOP has a reactive power compensation function, can dynamically adjust reactive power, improve voltage quality, and reduce network loss; and has a renewable energy adaptation function, and can improve power grid stability in a high-penetration renewable energy scenario.

[0036] Figure 1 A related technology provides a structure diagram of a display pixel matrix. In the RGBG pixel arrangement, the pixel circuits corresponding to the red pixels R and the blue pixels B in the same column are provided with the same data line to provide a data signal. When a pure color picture such as a red picture is displayed, the blue pixels B and the green pixels G need not to be displayed, and the data lines S1 / S3 need not to be kept high (the blue pixels are inserted with black and not displayed) or low (the red pixels R are displayed). This state of not stopping the data voltage from being flipped to realize the pure color picture leads to increased driving power consumption and wasted power consumption of a driving chip IC.

[0037] To solve the above technical problems, the pixel connection relationship in Figure 1 is changed. Figure 2a A structure diagram of a display pixel matrix driven by a data driving circuit is provided. Figure 2b Another structure diagram of a display pixel matrix driven by a data driving circuit is provided. The connection relationship in Figure 1 is changed. Figure 2a and Figure 2bThe sub-pixels of different luminous colors in the same column are connected to different data lines, and each data line provides a data signal corresponding to a sub-pixel of a luminous color. When the data driving circuit drives the display panel 2000 to display a pure color picture (such as full red / full blue), frequent voltage jumps can be avoided, and power consumption is significantly reduced. When displaying a color picture, even if each data line provides a data signal corresponding to a sub-pixel of a luminous color, the data signal of the same data line does not need to be set high or low. When displaying a pure color picture, for example, only one pixel of a luminous color is lit, and the pixels of the other two luminous colors are not displayed. The data signal of the same data line can be a constant voltage and does not need to be set high or low. If the bias current of the sub-module in the data driving circuit is still the same as when displaying a color picture, it will result in higher power consumption. The control method of the data driving circuit provided in the present application adjusts the bias current according to the type of display picture to achieve the purpose of reducing power consumption.

[0038] Figure 3 This is a schematic diagram of the structure of a data driving circuit provided by this application. Figure 2a and Figure 2b The pixel structure described. Figure 3 As shown in the figure, the data driving circuit 100 is used to output data signals to the data lines DATA of the display panel. The same data line DATA in the display panel is used to transmit the data signal corresponding to the sub-pixel of one luminous color. The data driving circuit 100 includes multiple sub-modules 110. The data driving circuit 100 may also include at least one control sub-module 111. The data driving circuit 100 may be a driver chip.

[0039] The control submodule 111 is used to determine the bias current of at least one submodule 110 in the data driving circuit 100 according to the type of picture displayed by the display panel, wherein the type of picture displayed by the display panel includes a preset pure color picture and a preset color picture.

[0040] When the display panel displays a solid-color image, the voltage on the same data line DATA remains constant or almost constant, so the bias current required for the normal operation of the submodule is small. When the display panel displays a color image, the voltage on the same data line DATA varies, so the bias current required for the normal operation of the submodule is large.

[0041] The data driving circuit 100 may include multiple driving sub-circuits connected to corresponding data lines. Each driving sub-circuit may include multiple sub-modules 110. The bias current of at least one sub-module 110 in each driving sub-circuit may be determined based on the type of image displayed by the display panel.

[0042] according to Figure 3The provided diagram shows that when the display is showing a solid color image, the bias current in the submodule is reduced to further reduce power consumption, thereby achieving the goal of reducing power consumption. When the display switches from a solid color image to a color image, the bias current in the submodule is increased to ensure that the display effect is not affected, thereby improving the display effect and ensuring the color image display effect.

[0043] Figure 4 This is a flow chart of a control method for a data drive circuit provided by this application. Figure 2a 、 Figure 2b and Figure 3 According to the structure described in Figure 4 In the diagram provided, the data driving circuit 100 is used to output data signals to the data lines DATA of the display panel 2000. The same data line DATA in the display panel 2000 is used to transmit data signals corresponding to sub-pixels of a certain luminous color. The data driving circuit 100 includes multiple sub-modules. The control method of the data driving circuit 100 specifically includes the following steps:

[0044] S401 . Determine a bias current of at least one submodule in a data driving circuit according to a picture type displayed by a display panel, wherein the picture type displayed by the display panel includes a preset pure color picture and a preset color picture.

[0045] When the display panel displays different types of images, the bias current within the submodule can be changed to ensure the display effect while maintaining low power consumption. For example, when the display panel switches from a color image to a solid color image, the bias current in the submodule can be reduced to reduce power consumption. When the display panel returns from a solid color image to a color image, the bias current in the submodule can be increased to ensure the display effect of the color image. The preset color image may include images of multiple colors. The preset solid color image may include an image of a single color.

[0046] The control method, data driving circuit and display device of the data driving circuit of the embodiment of the present application are as follows: the data driving circuit is used to output data signals to the data lines of the display panel, and the same data lines in the display panel are used to transmit data signals corresponding to sub-pixels of a certain luminous color. The bias current of at least one sub-module in the data driving circuit is determined according to the type of picture displayed by the display panel, and the picture types displayed by the display panel include preset pure color pictures and preset color pictures. During the process of switching the picture displayed by the display panel between the pure color picture and the color picture, the purpose of reducing the circuit power consumption is achieved by changing the magnitude of the bias current in the data driving circuit. According to the embodiment of the present application, the effect of reducing power consumption can be achieved by reducing the bias current when displaying a pure color picture based on different display picture types.

[0047] For example, in a case where the display panel displays a preset color picture, the gray scale of the plurality of sub-pixels in each of the sub-pixels of at least one light-emitting color is different. For example, in a case where the display panel displays a preset color picture, the gray scale of the plurality of red sub-pixels in the same column is different, and / or the gray scale of the plurality of green sub-pixels in the same column is different, and / or the gray scale of the plurality of blue sub-pixels in the same column is different. The column direction can be parallel to the extension direction of the data line. The column direction can be parallel to the second direction Y.

[0048] For example, in a case where the display panel displays a preset color picture, the data voltage transmitted on at least one data line is variable within at least one frame. For example, in a case where the display panel displays a preset color picture, the data voltage transmitted on each data line is variable within at least one frame.

[0049] For example, in a case where the display panel displays a preset pure color picture, the gray scale of each of the sub-pixels of at least one light-emitting color is the same. For example, in a case where the display panel displays a preset pure color picture, the gray scale of the plurality of red sub-pixels in the same column is the same, and / or the gray scale of the plurality of green sub-pixels in the same column is the same, and / or the gray scale of the plurality of blue sub-pixels in the same column is the same.

[0050] For example, in a case where the display panel displays a preset pure color picture, the data voltage transmitted on the same data line is constant within at least one frame. For example, in a case where the display panel displays a preset pure color picture, the data voltage transmitted on each data line is constant within at least one frame.

[0051] In a possible example scenario, on the basis of the above, the bias current of each of the at least one sub-module 110 in the data driving circuit 100 is different when the display panel displays different picture types. Figure 4

[0052] The plurality of sub-modules 110 in the data driving circuit 100 includes an input sub-module 200, an intermediate sub-module 300, and an output sub-module 400 connected in sequence.

[0053] The data driving circuit 100 can include a plurality of driving channels 101. Each driving channel 101 can include an input sub-module 200, an intermediate sub-module 300, and an output sub-module 400 connected in sequence. The output sub-module 400 can be connected with a data line.

[0054] The input sub-module 200 can be an input stage, configured to receive an original signal as an input signal. The intermediate sub-module 300 can be an intermediate stage. The output sub-module 400 can be an output stage. The driving channel 101 can be a power amplifier.

[0055] ​The data driving circuit 100 can convert the image signal into gamma data, and then convert the gamma data into an analog signal as an original signal through a digital-to-analog converter, and output the analog signal to the driving channel 101 for power amplification.

[0056] The input stage can be used to receive input signals and perform preliminary amplification. The input stage usually uses transistors or field effect tubes as amplification elements to realize linear amplification of the input signal. The input stage can include a bias current source.

[0057] The intermediate stage can be used to further amplify the input signal. The intermediate stage can use a multi-stage amplification circuit to improve the gain and bandwidth of the amplifier. The intermediate stage can include a bias current source.

[0058] The output stage can be used to convert the amplified signal into a larger current or voltage signal to drive the load. The output stage usually uses power transistors or power field effect tubes as amplification elements to achieve high efficiency and high power output.

[0059] In one possible example scenario, for determining the bias current in step S401, the specific determination process includes:

[0060] According to the type of the picture displayed by the display panel, the bias current I1 of the input sub-module 200 is determined.

[0061] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I1 of the input sub-module 200 is smaller than that in the case where the display panel displays a preset color picture.

[0062] The adjustment of the bias current I1 of the input sub-module 200 can be the adjustment of the bias current I1 of the input sub-module 200 corresponding to at least one color of sub-pixel, or the adjustment of the bias current I1 of the input sub-module 200 corresponding to each color of sub-pixel.

[0063] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I1 of the input sub-module 200 corresponding to the red sub-pixel is smaller than that in the case where the display panel displays a preset color picture.

[0064] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I1 of the input sub-module 200 corresponding to the green sub-pixel is smaller than that in the case where the display panel displays a preset color picture.

[0065] In a case where the display panel displays a preset pure color picture, the absolute value of the bias current I1 of the input submodule 200 corresponding to the blue sub-pixel is smaller than that in a case where the display panel displays a preset color picture.

[0066] In a case where the display panel displays a preset pure color picture, the bias current I1 of the input submodule 200 is smaller than that in a case where the display panel displays a preset color picture.

[0067] By selecting the bias current of the display panel in the case of a pure color picture to be smaller than that in the case of a color picture, the low power consumption output effect in the case of a pure color picture is ensured.

[0068] In a possible example scenario, in a case where the display panel is switched from displaying a preset color picture to displaying a preset pure color picture, the absolute value of the bias current I1 of the input submodule 200 decreases.

[0069] In a possible example scenario, in a case where the display panel is switched from displaying a preset pure color picture to displaying a preset color picture, the absolute value of the bias current I1 of the input submodule 200 increases.

[0070] The bias current of the input submodule 200 is adjusted according to different types of pictures displayed by the display panel. In a case where the picture displayed by the display panel is switched to a pure color picture, only one type of sub-pixel emits light and the other two types of sub-pixels are in an off or black writing state, and the purpose of reducing output power consumption can be achieved by reducing the bias current of the input submodule. Figure 2a or Figure 2b Similarly, in a case where the displayed picture is switched from a pure color picture to a color picture, the bias current of the input submodule is increased to ensure the display effect of the color picture.

[0071] According to the structure of Figure 2a or Figure 2b The display panel 2000 includes a first sub-pixel column, the first sub-pixel column includes first sub-pixels and second sub-pixels arranged along a second direction Y, the first sub-pixels and the second sub-pixels have different light emitting colors, and data signals corresponding to the first sub-pixels and the second sub-pixels in the same first sub-pixel column are provided by different data lines. For example, the data lines extend along the second direction Y. For example, a plurality of data lines are arranged along a first direction X.

[0072] For example, the display panel 2000 further includes a scan line, the scan line can extend along the first direction X, and for example, a plurality of scan lines can be arranged along the second direction Y.

[0073] Optionally, each data line in the display panel is configured to transmit a data signal corresponding to a sub-pixel of one light-emitting color.

[0074] In one possible example scenario, for determining the bias current in step S401, the specific determination process includes:

[0075] According to the type of the picture displayed by the display panel, the bias current I2 of the intermediate sub-module 300 is determined.

[0076] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I2 of the intermediate sub-module 300 is smaller than that in the case where the display panel displays a preset color picture.

[0077] The adjustment of the bias current I2 of the intermediate sub-module 300 can be the adjustment of the bias current I2 of the intermediate sub-module 300 corresponding to at least one light-emitting color sub-pixel, or the adjustment of the bias current I2 of the intermediate sub-module 300 corresponding to each light-emitting color sub-pixel.

[0078] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I2 of the intermediate sub-module 300 corresponding to the red sub-pixel is smaller than that in the case where the display panel displays a preset color picture.

[0079] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I2 of the intermediate sub-module 300 corresponding to the green sub-pixel is smaller than that in the case where the display panel displays a preset color picture.

[0080] In the case where the display panel displays a preset pure color picture, the absolute value of the bias current I2 of the intermediate sub-module 300 corresponding to the blue sub-pixel is smaller than that in the case where the display panel displays a preset color picture.

[0081] In the case where the display panel displays a preset pure color picture, the bias current I2 of the intermediate sub-module 300 is smaller than that in the case where the display panel displays a preset color picture.

[0082] In the case where the type of the picture displayed by the display panel is different, the intermediate sub-module 300 can be adjusted to achieve the purpose of displaying a pure color picture or a color picture. Moreover, the bias current of the intermediate sub-module 300 in the pure color picture is smaller than the bias current I2 of the intermediate sub-module 300 in the color picture.

[0083] In a possible example scenario, when the display panel switches from displaying a preset color picture to displaying a preset pure color picture, the absolute value of the bias current I2 of the middle submodule 300 decreases.

[0084] In a possible example scenario, when the display panel switches from displaying a preset pure color picture to displaying a preset color picture, the absolute value of the bias current I2 of the middle submodule 300 increases.

[0085] The bias current of the intermediate submodule 300 is adjusted by adjusting the type of the picture displayed by the display panel. Figure 2a or Figure 2b The pixel structure in the display ensures that only one sub-pixel emits light, while the other two sub-pixels are off or black. This can reduce output power consumption by lowering the bias current in the intermediate sub-module. Similarly, when the display switches from a solid color image to a color image, the color display effect can be maintained by increasing or restoring the bias current in the intermediate sub-module.

[0086] In a possible example scenario, for determining the bias current in step S401, the specific determination process includes:

[0087] The bias current I1 of the input submodule 200 and the bias current I2 of the intermediate submodule 300 are determined according to the type of picture displayed by the display panel.

[0088] In one possible example scenario, the bias current of the intermediate submodule is different when the display panel displays different picture types. The bias current of the input submodule is different when the display panel displays different picture types. The bias current of the intermediate submodule is different when the display panel displays different picture types.

[0089] When the display panel displays a preset pure color picture, the absolute value of the bias current of the input submodule is smaller than the absolute value of the bias current of the input submodule when the display panel displays a preset color picture.

[0090] When the display panel displays a preset pure color picture, the absolute value of the bias current of the middle submodule is smaller than the absolute value of the bias current of the middle submodule when the display panel displays a preset color picture.

[0091] In a case where the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the absolute value of the bias current of the input sub-module is reduced, and the absolute value of the bias current of the intermediate sub-module is reduced.

[0092] Further, in a case where the picture type displayed by the display panel is different, the bias current in the data driving circuit can be adjusted by simultaneously changing the bias current of the input sub-module and / or the bias current of the intermediate sub-module. By adjusting the bias current in one or two sub-modules, the size of the bias current can be changed to the maximum extent. By greatly changing the bias current in one or more sub-modules, the size of the bias current in the data driving circuit is changed, and the purpose of reducing power consumption in the case of a pure color picture is achieved. According to the principle that the smaller the bias current in a sub-module is, the lower the corresponding output power is, by adjusting the bias current in multiple sub-modules, the purpose of reducing the bias current to the maximum value is achieved, and the power consumption is reduced to the maximum extent.

[0093] Similarly, in a case where the displayed picture is restored from a pure color picture to a color picture, the bias current in one or more sub-modules can be increased or restored to achieve the purpose of increasing the display effect.

[0094] Further, in a case where the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the bias current in at least one sub-module is reduced to achieve the purpose of reducing the output power consumption. For example, in a case where the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the absolute value of the bias current of the input sub-module is reduced, and / or the absolute value of the bias current of the intermediate sub-module is reduced.

[0095] Similarly, in a case where the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the bias current in at least one sub-module is increased or restored to achieve the purpose of ensuring the display effect. For example, in a case where the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the absolute value of the bias current of the input sub-module is increased, and / or the absolute value of the bias current of the intermediate sub-module is increased.

[0096] In a possible example scenario, the preset pure color picture includes a red picture, a green picture, or a blue picture.

[0097] Optionally, the preset pure color picture can include a yellow picture, a purple picture, or a white picture, etc.

[0098] In a possible example scenario, the data driving circuit further comprises a first control submodule SRSOP for adjusting the bias current of the input submodule individually.

[0099] The first control submodule mentioned here can be understood as SRSOP. The bias current in the input submodule 200 is controlled simultaneously through SRSOP.

[0100] In the case of displaying a solid color picture, in order to reduce the output power consumption, the bias current of the input submodule 200 can be reduced through the first control submodule SRSOP, so as to achieve the purpose of reducing the output power consumption of the solid color picture.

[0101] In a possible example scenario, the data driving circuit further comprises a second control submodule ISOP for synchronously adjusting the bias current of the input submodule 200 and the intermediate submodule 300.

[0102] The second control submodule mentioned here can be understood as ISOP. The bias current in the input submodule and the intermediate submodule 300 is controlled simultaneously through ISOP.

[0103] In the case of displaying a solid color picture, in order to reduce the output power consumption, the bias current of the input submodule and the intermediate submodule can be reduced through the second control submodule ISOP, so as to achieve the purpose of reducing the output power consumption of the solid color picture.

[0104] Optionally, in a possible example scenario, the data driving circuit further comprises a third control submodule SOP for adjusting the bias current of the intermediate submodule individually. In the case of displaying a solid color picture, in order to reduce the output power consumption, the bias current of the intermediate submodule 300 can be reduced through the third control submodule SOP, so as to achieve the purpose of reducing the output power consumption of the solid color picture.

[0105] According to the picture type displayed by the display picture, different control sub-modules are selected. In the case of a real pure color picture, in order to reduce the output power consumption, the bias current in the input sub-module is first reduced by the first control sub-module to achieve the purpose of reducing the power consumption. Alternatively, without changing the bias current in the input sub-module, the bias current in the intermediate sub-module is changed to achieve the purpose of reducing the power consumption. When the power consumption after the bias current is reduced cannot be reduced to the required range by changing the bias current in the intermediate sub-module or changing the bias current in the input sub-module, the bias currents in the intermediate sub-module and the input sub-module can be reduced by the second control sub-module on the basis of reducing the bias current in one sub-module, so as to increase the variation of the bias current by reducing the bias current in two sub-modules again, so as to achieve the purpose of reducing the output power consumption. Alternatively, the bias currents in the input sub-module and the intermediate sub-module are changed one or more times, and the bias currents in the two sub-modules are reduced multiple times, so as to reduce the bias currents in the input sub-module and the intermediate sub-module at the same time, and achieve the purpose of reducing the power consumption.

[0106] The application provides a control method of a data driving circuit. The bias current in at least one sub-module is adjusted according to the picture type of a display picture. When the display panel displays a pure color picture, the bias current in at least one sub-module is reduced to achieve the effect of reducing the power consumption. When the display panel displays a color picture, the bias current in at least one sub-module is increased to achieve the purpose of increasing the display effect, and the normal display of the color picture is ensured.

[0107] Figure 5a FIG. 4 is a flowchart of another control method of a data driving circuit provided by the application. Figure 5a FIG. 5 is a flowchart of the control method of the data driving circuit according to the embodiment. Figure 5a According to the diagram provided by the application, the steps of the control method of the data driving circuit specifically include the following steps.

[0108] The initial bias current can be the bias current of the sub-module of the data driving circuit before the picture of the display panel is switched.

[0109] S520, determining whether the initial bias current meets the set value of the bias current corresponding to the picture type after the display panel is switched.

[0110] The bias currents of the sub-modules of the data driving circuit before and after the picture of the display panel is switched can be different.

[0111] S530, in the case where the initial bias current does not meet the set value, the bias current of the input sub-module is adjusted by the first control sub-module to obtain an adjusted bias current.

[0112] The adjusting bias current can be understood as the size of the bias current obtained by adjusting the first control sub-module (i.e. the SRSOP unit).

[0113] After the setting value of the bias current is determined, when the display screen after the screen switching is a solid color display screen, the bias current I1 of the bias current source A1 in the sub-module is first changed by adjusting the first control sub-module (i.e. the SRSOP unit), so as to reduce the size of the bias current without affecting the visual display effect and achieve the purpose of reducing power consumption.

[0114] After the setting value of the bias current is determined, when the display screen is a color display screen, the bias current I1 of the bias current source A1 in the sub-module is first changed by adjusting the first control sub-module (i.e. the SRSOP unit), so as to increase or restore the size of the bias current and ensure the display effect of the color screen.

[0115] S540, judging whether the adjusted bias current meets the setting value.

[0116] On the basis of adjusting the first control sub-module (i.e. the SRSOP unit), it is judged whether the adjusted bias current meets the requirement of reducing power consumption. If the requirement of reducing power consumption is not met or the bias current is not reduced, the adjusting operation needs to be performed again, so as to achieve the purpose of reducing the bias current and reducing power consumption.

[0117] Optionally, after the first control sub-module (i.e. the SRSOP unit) is adjusted, the output bias current is reduced, but does not meet the setting value, i.e. the bias current is not adjusted to the lowest bias current defined by the setting value. In this case, it can be considered that there is still a possibility of reducing power consumption, and the bias current needs to be further reduced, so as to achieve the purpose of further reducing power consumption.

[0118] S550, in the case that the adjusted bias current does not meet the setting value, the bias current of the input sub-module and the bias current of the intermediate sub-module are respectively adjusted by the second control sub-module, so as to obtain a target bias current, so that the target bias current meets the setting value.

[0119] The setting value not being met means that the setting value is not equal to the setting value. The setting value being met means that the setting value is equal to the setting value. The setting value not being met can be understood as the bias current not meeting the requirement of reducing power consumption or not meeting the lowest power consumption.

[0120] The target bias current can be understood as the bias current size corresponding to the requirement of reducing power consumption.

[0121] In the case that the picture type of the display picture is a pure color picture, when the first control submodule (i.e. the SRSOP unit) cannot achieve the purpose of reducing power consumption, the second control submodule (i.e. the ISOP unit) can be adjusted to reduce the bias current I1 of the bias current source A1 in the submodule. Since the product of current and voltage is the power consumption value, the purpose of reducing output power consumption is achieved by reducing the bias current.

[0122] In the case that the picture type of the display picture is a color picture, when the first control submodule (i.e. the SRSOP unit) cannot achieve the set value, the second control submodule (i.e. the ISOP unit) can be adjusted to increase the bias current of the bias current source A1 in the submodule. Since the product of current and voltage is the power consumption value, the set value is achieved by increasing the bias current.

[0123] The specific operation steps of step 530 include: in the case that the initial bias current does not satisfy the set value and the display panel is switched from displaying a preset color picture to displaying a preset pure color picture, the bias current of the input submodule 200 is reduced by the first control submodule (i.e. the SRSOP unit) to obtain a corresponding first adjusted bias current, and the first adjusted bias current is less than the initial bias current.

[0124] In the case that the initial bias current does not satisfy the set value and the display panel is switched from displaying a preset pure color picture to displaying a preset color picture, the bias current of the input submodule is increased by the first control submodule (i.e. the SRSOP unit) to obtain a corresponding second adjusted bias current, and the second adjusted bias current is greater than the initial bias current.

[0125] In a possible example scenario, in the case that the initial bias current satisfies the set value, the initial bias current is taken as the target bias current.

[0126] In a possible example scenario, in the case that the adjusted bias current satisfies the set value, the adjusted bias current is taken as the target bias current.

[0127] By judging the case that the initial bias current does not satisfy the set value, the bias current is adjusted according to the picture type of the display panel to obtain an adjusted bias current. The display picture is controlled to run at a low power consumption in a pure color picture state by adjusting the bias current, and the display effect of the display picture is restored by increasing the bias current in a color picture state.

[0128] Step 550 includes the steps of determining the target bias current.

[0129] In the case that the adjusted bias current does not meet the set value and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the second control submodule (i.e., the ISOP unit) is used to reduce the bias current in the input submodule 200 and the intermediate submodule 300 to obtain a corresponding first target bias current, which is smaller than the adjusted bias current.

[0130] Alternatively, in the case that the adjusted bias current does not meet the set value and the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the second control submodule (i.e., the ISOP unit) is used to increase the bias current in the input submodule 200 and the intermediate submodule 300 to obtain a corresponding second target bias current, which is greater than the adjusted bias current.

[0131] When the display picture type is a pure color picture, in order to reduce power consumption, the bias current is first reduced by the first control submodule or the third control submodule to achieve the purpose of reducing power consumption. When the bias current cannot be reduced by the first control submodule or the third control submodule to achieve the effect of reducing output power consumption, the possible reason is that the bias current change amount is low. In order to further increase the bias current change amount, the bias current can not be reduced by the first control submodule or the third control submodule, but can be reduced by the second control submodule to achieve the effect of reducing the bias current in multiple submodules at one time, thereby achieving the purpose of low power consumption. Alternatively, in the case that the bias current is reduced by the first control submodule or the third control submodule, the bias current is again reduced by the second control submodule, and the bias current is reduced by two control submodules to achieve the purpose of increasing the bias current change amount, thereby improving the purpose of reducing power consumption when the display panel is switched to a pure color picture. Similarly, in the case that the picture of the display panel is switched from a pure color picture to a color picture, the same judgment logic as in the process of switching from a pure color picture to a color picture is used to increase the bias current by at least one control submodule to achieve the purpose of improving display effect, which will not be described here. At least one includes one or more or two.

[0132] Figure 5b is a flowchart of another control method of the data driving circuit provided in the present application. Figure 5b is based on the above embodiments. According to Figure 5b The provided diagram shows that the steps of the control method of the data driving circuit specifically include:

[0133] S501, obtain an initial bias current and an initial brightness corresponding to the current data driving circuit.

[0134] The initial brightness can be understood as the visual effect brightness data of the picture displayed by the display screen under the control of the initial current output to the display panel.

[0135] Further, when the display screen displays different picture types (including a pure color picture or a color picture) by adjusting the data driving circuit, the initial bias current output by the current sub-module and the initial brightness of the current display screen are obtained and recorded as the parameters of the adjustment.

[0136] S502, determine whether the initial bias current meets the current setting value, and determine whether the initial brightness meets the brightness setting value.

[0137] The current setting value can be understood as the adjustment value of the bias current that can maintain the driving effect under the premise of reducing the output bias current. The brightness setting value can be understood as the brightness adjustment value that can ensure the display effect and visual viewing effect of the display screen are not affected while reducing the brightness.

[0138] Further, when the picture type displayed by the display panel is obtained, it is determined whether the brightness corresponding to the current display picture exceeds the brightness setting value of the display effect during the adjustment process, and it is determined whether the bias current exceeds the current setting value of starting the normal display of the display screen while adjusting the bias current, thereby providing a reference basis for the next step of adjusting to the lowest power consumption state.

[0139] S503, in the case that the initial bias current does not meet the current setting value or the initial brightness does not meet the brightness setting value, the bias current and the brightness of the input sub-module are adjusted by the first control sub-module to obtain the adjusted bias current and the adjusted brightness.

[0140] The adjusted bias current can be understood as the size of the output bias current obtained by adjusting the bias current by the first control sub-module (i.e., the SRSOP unit). The adjusted brightness can be understood as the size of the display brightness obtained by adjusting the first control sub-module (i.e., the SRSOP unit).

[0141] After limiting the adjustment setting values of the output bias current and the display brightness, when the display picture is a pure color display picture, the bias current is first adjusted by the first control sub-module (i.e., the SRSOP unit), thereby changing the bias current of the bias current source A1 in the sub-module, and the purpose of reducing the output bias current is achieved by reducing the size of the bias current. Since the output bias current is reduced, the display brightness is also weakened, and the purpose of reducing the power consumption is achieved without affecting the visual display effect.

[0142] After the setting value of the adjustment of the output bias current and the display brightness is defined, when the display picture is a color display picture, the bias current is first adjusted by the first control submodule (i.e. the SRSOP unit), and then the bias current of the bias current source in the submodule is changed, the purpose of increasing the output bias current and the display brightness is achieved by increasing the size of the bias current, and the display brightness is also enhanced due to the increase of the output bias current, and the output power consumption of the color picture is recovered without affecting the visual display effect.

[0143] S504, judge whether the adjusted bias current meets the current setting value, and judge whether the adjusted brightness meets the brightness setting value.

[0144] The threshold value corresponding to the adjusted bias current and the adjusted brightness is the same as the setting value corresponding to the initial bias current and the initial brightness, and both are the limitation of the output bias current and the display brightness.

[0145] On the basis of adjusting the first control submodule (i.e. the SRSOP unit), it is judged whether the adjusted output bias current and the display brightness meet the requirement of reducing power consumption, and under the premise of not reducing power consumption or reducing the output bias current and the display brightness, the adjustment operation needs to be performed again to achieve the purpose of reducing current and reducing power consumption.

[0146] Optionally, after adjusting the first control submodule (i.e. the SRSOP unit), the output bias current is reduced, and the display brightness is also reduced, but it does not reach the adjustable critical value of the setting value, that is, it does not adjust to the minimum bias current and the minimum display brightness limited by the setting value, which can be considered as still having the possibility of reducing power consumption, and then the bias current and the display brightness need to be further reduced to achieve the purpose of further reducing power consumption.

[0147] S505, in the case that the adjusted bias current does not meet the current setting value or the adjusted brightness does not meet the brightness setting value, the bias current of the input submodule and the bias current of the intermediate submodule are adjusted by the second control submodule respectively, and the target bias current and the target brightness are obtained to make the target bias current meet the current setting value and the target brightness meet the brightness setting value.

[0148] The case that the brightness setting value and the current setting value are not met can be understood as the case that the power consumption is not reduced or the minimum power consumption is not reached.

[0149] The target bias current can be understood as the bias current size corresponding to the reduction of power consumption, and the target brightness can be understood as the brightness size corresponding to the reduction of power consumption. The brightness can be quantified as the brightness value or the gray scale value of the display screen.

[0150] In the case that the picture type of the display picture is a solid color picture, when the first control submodule (i.e. SRSOP unit) cannot achieve the purpose of reducing power consumption, the second control submodule (i.e. ISOP unit) can be used to reduce the bias current of the bias current source A1 in the submodule. Since the product of current and voltage is the power consumption value, the purpose of reducing output power consumption is achieved by reducing the bias current, and the purpose of reducing power consumption is achieved by reducing the display brightness.

[0151] In the case that the picture type of the display picture is a color picture, when the first control submodule (i.e. SRSOP unit) cannot achieve the purpose of setting the bias current, the second control submodule (i.e. ISOP unit) can be used to increase the bias current of the bias current source A1 in the submodule. Since the product of current and voltage is the power consumption value, the purpose of increasing display brightness is achieved by increasing the bias current, and the purpose of restoring the output power consumption of the color picture is achieved.

[0152] The control method of the data driving circuit can control the display panel to display a solid color picture under the driving of the data driving circuit. First, the bias current is reduced by the first control submodule or the third control submodule, the output bias current is reduced to reduce power consumption, and in order to ensure that the picture quality of the display picture is not affected, the bias current is reduced by the second control submodule when the first control submodule or the third control submodule cannot achieve the effect of reducing the output bias current after adjustment. The effect of reducing the output bias current to reduce power consumption can be achieved. The two adjustment methods are combined for practical use to ensure that the display panel displays a solid color picture and the technical effect of reducing power consumption is achieved. The same means are used when the display panel displays a color picture. First, the bias current is increased by the first control submodule or the third control submodule to achieve the purpose of restoring the display effect. In the case that the first control submodule or the third control submodule cannot achieve the purpose of improving the display effect, the second control submodule is used to increase the bias current to achieve the same effect instead of changing the first control submodule or the third control submodule. Or, based on the premise of increasing the bias current by one control submodule, the second control submodule is used to increase the bias current to achieve the purpose of enhancing the display effect.

[0153] For the determination process of step S503, in the case that the initial bias current does not satisfy the current setting value or the initial brightness does not satisfy the brightness setting value, and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the bias current of the input submodule is reduced by the first control submodule to obtain a corresponding first adjusted bias current or a first adjusted brightness, the first adjusted bias current is less than the initial bias current, and the first adjusted brightness is less than the initial brightness. Alternatively, in the case that the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the bias current of the input submodule is increased by the first control submodule to obtain a corresponding second adjusted bias current or a second adjusted brightness, the second adjusted bias current is greater than the initial bias current, and the second adjusted brightness is greater than the initial brightness.

[0154] In a possible example scenario, in the case that the initial bias current satisfies the current setting value and the initial brightness satisfies the brightness setting value, the initial bias current is taken as the target bias current, and the initial brightness is taken as the target brightness.

[0155] In a possible example scenario, in the case that the adjusted bias current satisfies the current setting value and the adjusted brightness satisfies the brightness setting value, the adjusted bias current is taken as the target bias current, and the adjusted brightness is taken as the target brightness.

[0156] By judging the case that the initial bias current does not satisfy the current setting value or the initial brightness does not satisfy the brightness setting value, the bias current and the brightness are adjusted according to the picture type of the display panel to obtain the adjusted bias current and the adjusted brightness, the display picture is controlled to run at low power consumption in the pure color picture by the adjusted brightness and the adjusted bias current, and the bias current is increased in the color picture state to restore the display effect of the display picture.

[0157] For the determination process of step S505, in the case that the adjusted bias current does not satisfy the current setting value or the adjusted brightness does not satisfy the brightness setting value, and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the bias current in the input submodule and the intermediate submodule is reduced by the second control submodule to obtain a corresponding first target bias current and a first target brightness, the first target bias current is less than the adjusted bias current, and the first target brightness is less than the adjusted brightness. Alternatively, in the case that the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the bias current in the input submodule and the intermediate submodule is increased by the second control submodule to obtain a corresponding second target bias current and a second target brightness, the second target bias current is greater than the adjusted bias current, and the second target brightness is greater than the adjusted brightness.

[0158] In a case that the display picture type is a solid color picture, in order to reduce power consumption, the bias current is first reduced by the first control submodule or the third control submodule to achieve the purpose of reducing power consumption; in a case that the bias current cannot achieve the effect of reducing output power consumption by the first control submodule or the third control submodule, the possible reason is that the bias current change amount is low, in order to further increase the bias current change amount, the bias current in the second control submodule can be reduced instead of reducing the bias current in the first control submodule or the third control submodule, so as to achieve the effect of reducing the bias current and the brightness in multiple submodules at one time, and the purpose of low power consumption is achieved. Alternatively, in a case that the bias current is reduced by the first control submodule or the third control submodule, the bias current is further reduced by the second control submodule, the bias current is reduced by two control submodules, the purpose of increasing the bias current change amount is achieved, and the purpose of reducing power consumption of the display panel when switching to a solid color picture is achieved. Similarly, in a case that the picture of the display panel is switched from a solid color picture to a color picture, the same judgment logic as in the process of switching from a solid color picture to a color picture is adopted, the bias current is increased by at least one control submodule to achieve the purpose of improving display effect, which will not be described here.

[0159] Figure 6 is another structure diagram of a data driving circuit provided by the embodiment of the present application. Figure 6 is introduced on the basis of Figure 3 . According to the diagram provided by Figure 6 , the multiple submodules in the data driving circuit include an input submodule 200, an intermediate submodule 300 and an output submodule 400 connected in sequence.

[0160] Among them, in a case that the display panel displays a preset solid color picture, the absolute value of the bias current of the input submodule is less than the absolute value of the bias current of the input submodule in a case that the display panel displays a preset color picture.

[0161] In a possible example scenario, in a case that the display panel displays a preset solid color picture, the absolute value of the bias current of the intermediate submodule is less than the absolute value of the bias current of the intermediate submodule in a case that the display panel displays a preset color picture.

[0162] In a possible example scenario, in a case that the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, the absolute value of the bias current of the input submodule is reduced, or the absolute value of the bias current of the intermediate submodule is reduced.

[0163] In a possible example scenario, in a case that the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, the absolute value of the bias current of the input submodule is reduced, and the absolute value of the bias current of the intermediate submodule is reduced.

[0164] In a possible example scenario, in a case where the display panel is switched from displaying a preset monochrome picture to displaying a preset color picture, the absolute value of the bias current of the input submodule is increased, or the absolute value of the bias current of the intermediate submodule is increased.

[0165] In a possible example scenario, in a case where the display panel is switched from displaying a preset monochrome picture to displaying a preset color picture, the absolute value of the bias current of the input submodule is increased, and the absolute value of the bias current of the intermediate submodule is increased

[0166] The preset monochrome picture includes a red picture, a green picture, or a blue picture.

[0167] In a possible example scenario, according to Figure 6 The provided diagram shows that the data driving circuit further includes a first control submodule for separately adjusting the bias current of the input submodule.

[0168] In a possible example scenario, according to Figure 6 The provided diagram shows that the data driving circuit further includes a second control submodule for synchronously adjusting the bias current of the input submodule and the intermediate submodule.

[0169] In a possible example scenario, according to Figure 6 The provided diagram shows that the data driving circuit further includes a third control submodule for separately adjusting the bias current of the intermediate submodule.

[0170] By selecting different control submodules to adjust the bias current according to different picture types of the display panel, the purpose of reducing power consumption is achieved by reducing the bias current of at least one submodule when displaying a monochrome picture; and the display effect of a color picture is restored by increasing the bias current of at least one submodule when displaying a color picture.

[0171] In a possible example scenario, according to Figure 6 The provided diagram shows that, when the OLED display screen displays a monochrome picture, the data driving circuit controls the specified subpixels connected by the data lines to be connected, and sets the data lines corresponding to other subpixels to be at a low level, to obtain a monochrome picture. The original signal is output to the display screen as a final data signal through the input submodule 200, the intermediate submodule 300, and the output submodule 400. The input submodule 200 is configured to compare the input electrical signal and output an electrical signal under the action of the bias current source A1, the output electrical signal is used as an input signal of the intermediate submodule of the SOP, and the amplified electrical signal is output under the action of the bias current source A2 under the processing action of the operational amplifier, and the final control signal is output through the inverter in the SOP output submodule, to control the display screen to display a picture.

[0172] In a possible example scenario, according to Figure 6 According to the provided diagram, the data driving circuit is used to obtain an initial bias current corresponding to the current data driving circuit.

[0173] Determine whether the initial bias current meets the set value of the bias current corresponding to the picture type after the display panel is switched.

[0174] In the case where the initial bias current does not meet the set value, the bias current of the input submodule is adjusted by the first control submodule to obtain an adjusted bias current.

[0175] Determine whether the adjusted bias current meets the set value.

[0176] In the case where the adjusted bias current does not meet the set value, the bias current of the input submodule and the bias current of the intermediate submodule are respectively adjusted by the second control submodule to obtain a target bias current, so that the target bias current meets the set value.

[0177] The data driving circuit is also used to, in the case where the initial bias current does not meet the set value and the display panel is switched from displaying a preset color picture to displaying a preset solid color picture, reduce the bias current of the input submodule by the first control submodule to obtain a corresponding first adjusted bias current, and the first adjusted bias current is less than the initial bias current.

[0178] Or, in the case where the initial bias current does not meet the set value and the display panel is switched from displaying a preset solid color picture to displaying a preset color picture, the bias current of the input submodule is increased by the first control submodule to obtain a corresponding second adjusted bias current, and the second adjusted bias current is greater than the initial bias current.

[0179] In a possible example scenario, in the case where the initial bias current meets the set value, the initial bias current is taken as the target bias current.

[0180] In a possible example scenario, in the case where the adjusted bias current meets the set value, the adjusted bias current is taken as the target bias current.

[0181] In a possible example scenario, in the case where the adjusted bias current does not meet the set value, the bias current of the input submodule and the bias current of the intermediate submodule are respectively adjusted by the second control submodule to obtain a target bias current, including:

[0182] In a case where the adjusted bias current does not satisfy the set value and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, the second control submodule is used to reduce the bias current in the input submodule and the intermediate submodule to obtain a corresponding first target bias current, and the first target bias current is smaller than the adjusted bias current.

[0183] Alternatively, in a case where the adjusted bias current does not satisfy the set value and the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, the second control submodule is used to increase the bias current in the input submodule and the intermediate submodule to obtain a corresponding second target bias current, and the second target bias current is greater than the adjusted bias current.

[0184] In a possible example scenario, according to the provided diagram, the data driving circuit 100 is configured to obtain an initial bias current corresponding to the data driving circuit and an initial brightness; determine whether the initial bias current satisfies a current set value corresponding to the bias current of the submodule after the picture switching of the display panel and whether the initial brightness satisfies a brightness set value; in a case where the initial bias current does not satisfy the current set value or the initial brightness does not satisfy the brightness set value, adjust the bias current of the input submodule by using the first control submodule to obtain an adjusted bias current and an adjusted brightness according to different picture types displayed by the display panel; determine whether the adjusted bias current satisfies the current set value and whether the adjusted brightness satisfies the brightness set value; and in a case where the adjusted bias current does not satisfy the current set value or the adjusted brightness does not satisfy the brightness set value, respectively adjust the bias current of the input submodule and the bias current of the intermediate submodule by using the second control submodule to obtain a target bias current and a target brightness according to different picture types displayed by the display panel, so that the target bias current satisfies the current set value and the target brightness satisfies the brightness set value. Figure 6 In a possible example scenario, according to the provided diagram, the data driving circuit 100 is configured to obtain an initial bias current corresponding to the data driving circuit and an initial brightness; determine whether the initial bias current satisfies a current set value corresponding to the bias current of the submodule after the picture switching of the display panel and whether the initial brightness satisfies a brightness set value; in a case where the initial bias current does not satisfy the current set value or the initial brightness does not satisfy the brightness set value, adjust the bias current of the input submodule by using the first control submodule to obtain an adjusted bias current and an adjusted brightness according to different picture types displayed by the display panel; determine whether the adjusted bias current satisfies the current set value and whether the adjusted brightness satisfies the brightness set value; and in a case where the adjusted bias current does not satisfy the current set value or the adjusted brightness does not satisfy the brightness set value, respectively adjust the bias current of the input submodule and the bias current of the intermediate submodule by using the second control submodule to obtain a target bias current and a target brightness according to different picture types displayed by the display panel, so that the target bias current satisfies the current set value and the target brightness satisfies the brightness set value.

[0185] Figure 6 In a possible example scenario, according to the provided diagram, the data driving circuit 100 is further configured to, in a case where the initial bias current does not satisfy the current set value or the initial brightness does not satisfy the brightness set value and the display panel is switched from displaying the preset color picture to displaying the preset pure color picture, reduce the bias current of the input submodule by using the first control submodule to obtain a corresponding first adjusted bias current or a first adjusted brightness, and the first adjusted bias current is smaller than the initial bias current and the first adjusted brightness is smaller than the initial brightness; or in a case where the initial bias current does not satisfy the current set value or the initial brightness does not satisfy the brightness set value and the display panel is switched from displaying the preset pure color picture to displaying the preset color picture, increase the bias current of the input submodule by using the first control submodule to obtain a corresponding second adjusted bias current or a second adjusted brightness, and the second adjusted bias current is greater than the initial bias current and the second adjusted brightness is greater than the initial brightness.​

[0186] In a possible example scenario, according to Figure 6 The provided diagram, in the case where the initial bias current meets the current setting value, and the initial brightness meets the brightness setting value, the initial bias current is taken as the target bias current, and the initial brightness is taken as the target brightness.

[0187] In a possible example scenario, according to Figure 6 The provided diagram, in the case where the adjusted bias current meets the current setting value, and the adjusted brightness meets the brightness setting value, the adjusted bias current is taken as the target bias current, and the adjusted brightness is taken as the target brightness.

[0188] In a possible example scenario, according to Figure 6 The provided diagram, in the case where the adjusted bias current does not meet the current setting value or the adjusted brightness does not meet the brightness setting value, and the display panel is switched from displaying a preset color picture to displaying a preset pure color picture, the second control submodule is used to reduce the bias current in the input submodule and the intermediate submodule, to obtain a corresponding first target bias current and a first target brightness, the first target bias current is less than the adjusted bias current, and the first target brightness is less than the adjusted brightness; or, in the case where the adjusted bias current does not meet the current setting value or the adjusted brightness does not meet the brightness setting value, and the display panel is switched from displaying a preset pure color picture to displaying a preset color picture, the second control submodule is used to increase the bias current in the input submodule and the intermediate submodule, to obtain a corresponding second target bias current and a second target brightness, the second target bias current is greater than the adjusted bias current, and the second target brightness is greater than the adjusted brightness.

[0189] Figure 7 is a structural schematic diagram of a display device provided in the present application. Figure 7 is introduced on the basis of the above embodiment. According to Figure 7 The provided diagram, the structure of the display device 1000 specifically includes: a display panel 2000, and a data driving circuit 100 connected with the display panel 2000, as Figure 3 and Figure 6 any one of the data driving circuits in

[0190] The display device provided in the present embodiment can be the display device 1000 as shown in Figure 7 , can execute all functional modules in the data driving circuit as Figure 3 and Figure 6 , and further realize the technical effects of the control method of the data driving circuit shown in Figure 2a ~Fig. 5, and the specific related description is referred to the corresponding description in Figure 2a ~Fig. 5, which is not described herein for brief description.

[0191] According to the structure provided in FIG. 5 and Figure 6 The structure of the display panel is further illustrated according to the structure provided in FIG. 5, and the connection mode of the same sub-pixel is controlled by the same data signal line. Figure 2c FIG. 6 is a schematic diagram of a structure of a display pixel matrix driven by another data driving circuit provided in the present application. Figure 2d FIG. 7 is a schematic diagram of a structure of a display pixel matrix driven by another data driving circuit provided in the present application. According to the structure provided in FIG. 7, Figure 2c Figure 2d The display panel includes:

[0192] The first sub-pixel column 110 includes first sub-pixels P1 and second sub-pixels P2 arranged (for example, alternately arranged) along the second direction Y, the light-emitting colors of the first sub-pixels P1 and the second sub-pixels P2 are different, the data signals corresponding to the first sub-pixels P1 and the second sub-pixels P2 in the same first sub-pixel column 110 are provided by different data lines DATA, and the data lines DATA extend along the second direction Y.

[0193] Each data line DATA in the display panel 2000 is used to transmit the data signal corresponding to the sub-pixel of the same light-emitting color.

[0194] In a possible example scenario, the display panel further includes:

[0195] The first sub-pixel column 110 includes first sub-pixels P1 and second sub-pixels P2 arranged alternately along the second direction Y, and the second sub-pixel column 120 includes third sub-pixels P3 arranged along the second direction Y; the light-emitting colors of the first sub-pixels P1, the second sub-pixels P2, and the third sub-pixels P3 are different.

[0196] For example, the data lines DATA arranged along the first direction X and extending along the second direction Y include a plurality of data lines DATA arranged along the first direction X and extending along the second direction Y,

[0197] For example, the first sub-pixels in the two adjacent first sub-pixel columns are connected to the same data line DATA; or the second sub-pixels in the two adjacent first sub-pixel columns are connected to the same data line DATA.

[0198] For example, in the three adjacent first sub-pixel columns 110, the first sub-pixels P1 in the two first sub-pixel columns 110 on one side and in the middle are connected to the same data line DATA, and the second sub-pixels P2 in the two first sub-pixel columns 110 on the other side and in the middle are connected to the same data line DATA.

[0199] According to the structure provided in FIG. 5 and Figure 2c Figure 2d and Figure 2a and​​Figure 2b The structure is that one data line connects the same sub-pixel, and the purpose of controlling the same color sub-pixel by each data line is achieved. In this way, when the display panel switches to a pure color picture, for example, switches to a red picture, as long as the data line connected with the red sub-pixel is provided with a data signal for lighting the red sub-pixel, and the blue sub-pixel and the green sub-pixel are controlled to write black or be turned off to not display, the purpose of pure color display is achieved. In order to reduce the output power consumption, by reducing the bias current in the sub-module, the bias current of the sub-module in the driving channel connected with the data line corresponding to the red sub-pixel, the blue sub-pixel and the green sub-pixel is reduced, the purpose of reducing the output bias current is achieved under the premise of not affecting the red display, so as to realize the effect of reducing the output power consumption. When the display picture switches to a color picture, since the previous frame of display picture is a pure color, in order to ensure the brightness effect when switching to a color picture, the bias current needs to be increased or restored, the bias current in the sub-module is increased or restored, and the purpose of improving the display effect of the color picture is achieved.

[0200] In a possible example scenario, according to Figure 2c The provided diagram shows that the display panel further includes a plurality of pixel circuits 160 arranged along a first direction X, each column of pixel circuits includes a plurality of pixel circuits 160 arranged along a second direction Y, and each data signal line DATA is connected with one column of pixel circuits 160; the first column of pixel circuits 160 is connected with the first pixel P1 in the first column of first sub-pixels 110, and the last column of pixel circuits 160 is connected with the first sub-pixel P1 in the last column of first sub-pixels 110.

[0201] According to Figure 2d The provided diagram shows that the last column of pixel circuits 160 is connected with the second sub-pixel P2 in the last column of first sub-pixels 110; each column of pixel circuits in the remaining odd column of pixel circuits is connected with the first sub-pixel P1 in the adjacent two columns of first sub-pixels 110, or each column of pixel circuits in the remaining odd column of pixel circuits is connected with the second sub-pixel P2 in the adjacent two columns of first sub-pixels 110; the even column of pixel circuits is connected with the third sub-pixel P3 in the second column of sub-pixels 120.

[0202] In a possible example scenario, according to Figure 2dThe provided diagram shows that each column of the first sub-pixel column 110 is connected with the same column of the pixel circuit 160; each column of the second sub-pixel column 120 is connected with the same column of the pixel circuit; the plurality of data lines DATA includes the first data line DATA11, the last data line DATA12, and the first data line DATA1, the second data line DATA2 and the third data line DATA3 arranged along the first direction X between the first data line DATA11 and the last data line DATA12. The first data line DATA11 is connected with the pixel circuit 160 corresponding to the first sub-pixel P1 in the first column of the first sub-pixel column 110, and each first data line DATA1 is connected with the pixel circuit 160 corresponding to the first sub-pixel P1 in the adjacent two columns of the first sub-pixel column 110. Each second data line DATA2 is connected with the pixel circuit 160 corresponding to the second sub-pixel P2 in the adjacent two columns of the first sub-pixel column 110. The third data line DATA3 is connected with the pixel circuit 160 corresponding to the third sub-pixel P3 in the column of the second sub-pixel column 120. The last data line DATA12 is connected with the first sub-pixel P1 in the last column of the first sub-pixel column 110. Alternatively, the last data line DATA12 is connected with the pixel circuit 160 corresponding to the second sub-pixel P2 in the last column of the first sub-pixel column 110.

[0203] For example, the first sub-pixel P1 can emit red light, the second sub-pixel P2 can emit blue light, and the third sub-pixel P3 can emit green light.

[0204] For example, the first sub-pixel P1 can emit blue light, the second sub-pixel P2 can emit red light, and the third sub-pixel P3 can emit green light.

[0205] By Figures 2a-2d The display panel provided in various connection structures can be seen that, without changing the pixel matrix, by changing the distribution of the connection line of the sub-pixel and the data line, the data signal corresponding to the sub-pixel of different light emitting colors in the same column can be provided by different data lines, the data signal corresponding to the sub-pixel of one light emitting color can be transmitted by the same data line, and all the functional modules in the data driving circuit in Figures 2a-2d The provided diagram can perform all the functional modules in the data driving circuit in Figure 3 and Figure 6 The technical effects of the control method of the data driving circuit shown in Figure 2a ~Fig. 5, and the specific related description is referred to Figure 2a ~Fig. 5 corresponding description, for the sake of brevity, it is not described here.

[0206] The above merely describes specific implementation manners of the present application, and those skilled in the art can clearly understand the specific working process of the system, module and unit described above for the convenience and brevity of description, which can refer to the corresponding process in the foregoing method embodiments, and will not be described herein. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements shall be covered within the protection scope of the present application.

[0207] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0208] The above-described embodiments merely express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A control method for a data driving circuit, characterized in that: The data driving circuit is used to output data signals to data lines of the display panel, and the same data line in the display panel is used to transmit data signals corresponding to sub-pixels of one luminous color. The data driving circuit includes multiple sub-modules, and the control method includes: The bias current of at least one of the submodules in the data driving circuit is determined according to the type of picture displayed by the display panel, wherein the type of picture displayed by the display panel includes a preset pure color picture and a preset color picture.

2. The control method according to claim 1, characterized in that: The bias current of each submodule in at least one of the submodules in the data driving circuit is different when the display panel displays different picture types; Preferably, the multiple submodules in the data driving circuit include an input submodule, an intermediate submodule and an output submodule connected in sequence; Determining a bias current of at least one of the submodules in the data driving circuit according to a type of picture displayed by the display panel includes: Determining a bias current of the input submodule and / or a bias current of the intermediate submodule according to a type of picture displayed by the display panel; Preferably, the bias current of the input submodule is different when the display panel displays different picture types; and / or the bias current of the intermediate submodule is different when the display panel displays different picture types; Preferably, determining the bias current of the input submodule and / or the bias current of the intermediate submodule according to the type of picture displayed by the display panel includes: When the display panel displays a preset pure color picture, the absolute value of the bias current of the input submodule is smaller than the absolute value of the bias current of the input submodule when the display panel displays a preset color picture; and / or, when the display panel displays a preset pure color picture, the absolute value of the bias current of the intermediate submodule is smaller than the absolute value of the bias current of the intermediate submodule when the display panel displays a preset color picture; and / or, when the display panel switches from displaying a preset color picture to displaying a preset solid color picture, the absolute value of the bias current of the input submodule decreases, and / or the absolute value of the bias current of the intermediate submodule decreases; and / or, when the display panel switches from displaying a preset solid color picture to displaying a preset color picture, the absolute value of the bias current of the input submodule increases, and / or the absolute value of the bias current of the intermediate submodule increases; Preferably, the preset pure color picture includes a red picture, a green picture or a blue picture; And / or, the data driving circuit further includes a first control submodule, configured to individually adjust the bias current of the input submodule; And / or, the data driving circuit further includes a second control submodule for synchronously adjusting bias currents of the input submodule and the intermediate submodule, the display panel including: a first subpixel column, the first subpixel column including first subpixels and second subpixels arranged along a second direction, the first subpixels and the second subpixels emitting different colors, data signals corresponding to the first subpixels and the second subpixels in the same first subpixel column being provided by different data lines, the data lines extending along the second direction; Preferably, each of the data lines in the display panel is used to transmit a data signal corresponding to a sub-pixel of a light-emitting color.

3. The control method according to claim 2, characterized in that: Also includes: Obtaining an initial bias current corresponding to the current data driving circuit; determining whether the initial bias current satisfies a set value of the bias current corresponding to the screen type after the display panel switches; When the initial bias current does not meet the set value, the bias current of the input submodule is adjusted by the first control submodule to obtain an adjusted bias current; Determining whether the adjusted bias current meets the set value; When the adjusted bias current does not meet the set value, the bias current of the input submodule and the bias current of the intermediate submodule are adjusted respectively by the second control submodule to obtain a target bias current so that the target bias current meets the set value.

4. The control method according to claim 3, characterized in that: When the initial bias current does not meet the set value, adjusting the bias current of the input submodule by the first control submodule to obtain an adjusted bias current includes: When the initial bias current does not meet the set value and the display panel switches from displaying a preset color image to displaying a preset solid color image, the bias current of the input submodule is reduced by the first control submodule to obtain a corresponding first adjusted bias current, where the first adjusted bias current is less than the initial bias current; Alternatively, when the initial bias current does not meet the set value and the display panel switches from displaying a preset solid color image to displaying a preset color image, the bias current of the input submodule is increased by the first control submodule to obtain a corresponding second regulated bias current, where the second regulated bias current is greater than the initial bias current; Preferably, when the initial bias current satisfies the set value, the initial bias current is used as the target bias current; Preferably, when the adjusted bias current satisfies the set value, the adjusted bias current is used as the target bias current; Preferably, when the adjusted bias current does not meet the set value, the bias current of the input submodule and the bias current of the intermediate submodule are adjusted respectively by the second control submodule to obtain the target bias current, including: When the adjusted bias current does not meet the set value and the display panel switches from displaying a preset color image to displaying a preset solid color image, the bias currents in the input submodule and the intermediate submodule are reduced by the second control submodule to obtain a corresponding first target bias current, where the first target bias current is less than the adjusted bias current; Alternatively, when the adjusted bias current does not meet the set value and the display panel switches from displaying a preset solid color picture to displaying a preset color picture, the bias current in the input submodule and the intermediate submodule is increased by the second control submodule to obtain a corresponding second target bias current, and the second target bias current is greater than the adjusted bias current.

5. A data driving circuit, characterized in that: The data driving circuit is used to output data signals to data lines of the display panel, wherein the same data line in the display panel is used to transmit data signals corresponding to sub-pixels of one luminous color. The data driving circuit includes multiple sub-modules, and the data driving circuit also includes at least one control sub-module; The control submodule is used to determine the bias current of at least one of the submodules in the data driving circuit according to the type of picture displayed by the display panel, wherein the type of picture displayed by the display panel includes a preset pure color picture and a preset color picture.

6. The data driving circuit according to claim 5, wherein: The multiple submodules in the data driving circuit include an input submodule, an intermediate submodule and an output submodule connected in sequence; Wherein, when the display panel displays a preset pure color picture, the absolute value of the bias current of the input submodule is smaller than the absolute value of the bias current of the input submodule when the display panel displays a preset color picture; and / or, when the display panel displays a preset pure color picture, the absolute value of the bias current of the intermediate submodule is smaller than the absolute value of the bias current of the intermediate submodule when the display panel displays a preset color picture; and / or, when the display panel switches from displaying a preset color picture to displaying a preset solid color picture, the absolute value of the bias current of the input submodule decreases, and / or the absolute value of the bias current of the intermediate submodule decreases; and / or, when the display panel switches from displaying a preset solid color picture to displaying a preset color picture, the absolute value of the bias current of the input submodule increases, and / or the absolute value of the bias current of the intermediate submodule increases; And / or, the preset pure color picture includes a red picture, a green picture or a blue picture; And / or, at least one control submodule in the data driving circuit includes a first control submodule for individually adjusting the bias current of the input submodule; And / or, at least one control submodule in the data driving circuit includes a second control submodule, configured to synchronously adjust the bias currents of the input submodule and the intermediate submodule.

7. The data driving circuit according to claim 6, wherein: The data driving circuit is used to obtain an initial bias current corresponding to the current data driving circuit; determining whether the initial bias current satisfies a set value of the bias current corresponding to the screen type after the display panel switches; When the initial bias current does not meet the set value, the bias current of the input submodule is adjusted by the first control submodule to obtain an adjusted bias current; Determining whether the adjusted bias current meets the set value; When the adjusted bias current does not meet the set value, the bias current of the input submodule and the bias current of the intermediate submodule are adjusted respectively by the second control submodule to obtain a target bias current so that the target bias current meets the set value.

8. The data driving circuit according to claim 7, wherein: The data driving circuit is further configured to, when the initial bias current does not meet the set value and the display panel switches from displaying a preset color image to displaying a preset solid color image, reduce the bias current of the input submodule through the first control submodule to obtain a corresponding first regulated bias current, wherein the first regulated bias current is less than the initial bias current; Alternatively, when the initial bias current does not meet the set value and the display panel switches from displaying a preset solid color image to displaying a preset color image, the bias current of the input submodule is increased by the first control submodule to obtain a corresponding second regulated bias current, where the second regulated bias current is greater than the initial bias current; Preferably, when the initial bias current satisfies the set value, the initial bias current is used as the target bias current; Preferably, when the adjusted bias current satisfies the set value, the adjusted bias current is used as the target bias current; Preferably, when the adjusted bias current does not meet the set value, the bias current of the input submodule and the bias current of the intermediate submodule are adjusted respectively by the second control submodule to obtain the target bias current, including: When the adjusted bias current does not meet the set value and the display panel switches from displaying a preset color image to displaying a preset solid color image, the bias currents in the input submodule and the intermediate submodule are reduced by the second control submodule to obtain a corresponding first target bias current, where the first target bias current is less than the adjusted bias current; Alternatively, when the adjusted bias current does not meet the set value and the display panel switches from displaying a preset solid color picture to displaying a preset color picture, the bias current in the input submodule and the intermediate submodule is increased by the second control submodule to obtain a corresponding second target bias current, and the second target bias current is greater than the adjusted bias current.

9. A display device, characterized in that: The device comprises a display panel and a data driving circuit according to any one of claims 5 to 8 connected to the display panel.

10. The display device according to claim 9, wherein The display panel includes: a first sub-pixel column, the first sub-pixel column including first sub-pixels and second sub-pixels arranged along a second direction, the first sub-pixels and the second sub-pixels emitting different colors, data signals corresponding to the first sub-pixels and the second sub-pixels in the same first sub-pixel column being provided by different data lines, the data lines extending along the second direction; Preferably, each of the data lines in the display panel is used to transmit a data signal corresponding to a sub-pixel of a light-emitting color; Preferably, the display panel includes: a plurality of first sub-pixel columns and a plurality of second sub-pixel columns alternately arranged along a first direction, wherein the first sub-pixel columns include a plurality of first sub-pixels and a plurality of second sub-pixels alternately arranged along a second direction, and the second sub-pixel columns include a plurality of third sub-pixels arranged along the second direction; the first sub-pixels, the second sub-pixels, and the third sub-pixels emit different colors; Optionally, the display panel further includes: a plurality of data lines arranged along the first direction and extending along the second direction, wherein the first sub-pixels in two adjacent columns of the first sub-pixel are connected to the same data line; or, the second sub-pixels in two adjacent columns of the first sub-pixel are connected to the same data line; Optionally, in three adjacent first sub-pixel columns, the first sub-pixels in two first sub-pixel columns located on one side and in the middle are connected to the same data line, and the second sub-pixels in two first sub-pixel columns located on the other side and in the middle are connected to the same data line; Optionally, the display panel further includes a plurality of columns of pixel circuits arranged along the first direction, and each column of pixel circuits includes a plurality of pixel circuits arranged along the second direction. Each of the data signal lines is connected to a corresponding column of the pixel circuits; the pixel circuits in the first column are connected to the first pixel in the first sub-pixel column of the first column, the pixel circuits in the last column are connected to the first sub-pixel in the last column of the first sub-pixel column, or the pixel circuits in the last column are connected to the second sub-pixel in the last column of the first sub-pixel column; each of the pixel circuits in the remaining odd-numbered columns is connected to the first sub-pixel in two adjacent columns of the first sub-pixel column, or each of the pixel circuits in the remaining odd-numbered columns is connected to the second sub-pixel in two adjacent columns of the first sub-pixel column; the pixel circuits in the even-numbered columns are connected to the third sub-pixel in the second sub-pixel column; Alternatively, each column of the first sub-pixel column is connected to the pixel circuit in the same column; each column of the second sub-pixel column is connected to the pixel circuit in the same column; the multiple data lines include the first data line, the last data line, and the first data line, the second data line and the third data line located between the first data line and the last data line and arranged along the first direction; the first data line is connected to the pixel circuit corresponding to the first sub-pixel in the first column of the first sub-pixel column, and each of the first data lines is connected to the pixel circuit corresponding to the first sub-pixel in two adjacent columns of the first sub-pixel column; each of the second data lines is connected to the pixel circuit corresponding to the second sub-pixel in two adjacent columns of the first sub-pixel column; the third data line is connected to the pixel circuit corresponding to the third sub-pixel in a column of the second sub-pixel column; the last data line is connected to the first sub-pixel in the last column of the first sub-pixel column; or, the last data line is connected to the pixel circuit corresponding to the second sub-pixel in the last column of the first sub-pixel column.

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