Driving module and display device

Abstract

The invention belongs to the field of display, and particularly relates to a driving module and a display device.The driving module comprises a plurality of source electrode driving chips, a polarity partition control module, a polarity reversal control module and an intelligent control module, each source electrode driving chip is connected with multiple columns of data lines of a display panel, the source electrode driving chips in odd columns are connected with a pull-down power source, and the polarity partition control module is connected with the polarity reversal control module; the polarity partition control module controls the source electrode driving chips of even columns to be connected with a pull-up or pull-down power supply, the polarity reversal control module controls whether the pixel columns at the junction have positive and negative alternation in one frame, and the intelligent control module controls the polarity partition control module and the polarity reversal control module to work. The intelligent control module controls whether to perform polarity partitioning according to the severity of the crosstalk so as to eliminate the crosstalk, and controls the polarity reversal control module to work according to the obvious degree of the bright and dark lines after the polarity partitioning, so that display unevenness caused by the bright and dark lines can be improved or eliminated, and the display image quality of the display panel is improved.

Description

Technical Field

[0001] This application belongs to the field of display, specifically relating to a driving module and a display device. Background Technology

[0002] A thin-film transistor liquid crystal display (TFT-LCD) includes an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. During display, the pixel electrodes on one side of the array substrate and the common electrode on the other side of the color filter substrate form a liquid crystal capacitor (Clc), which drives the liquid crystal molecules to deflect, controlling the brightness of each sub-pixel to achieve image display.

[0003] If a unidirectional electric field is applied to liquid crystal molecules for an extended period, the molecules may become polarized, leading to a decrease in display quality and even damage to the liquid crystal material. Polarization of the liquid crystal molecules can be effectively avoided by reversing the polarity and alternating the direction of the electric field. Polarity reversal causes the pixel voltage to be greater or less than the voltage of the common electrode. The coupling capacitance (Cdc) formed between the data line and the pixel electrode causes a shift in the pixel voltage, resulting in crosstalk and affecting the display performance of the liquid crystal display.

[0004] Liquid crystal displays (LCDs) can be divided into multiple display areas. Making adjacent display areas symmetrical in polarity can cancel coupling, thereby improving or eliminating crosstalk. However, with symmetrical polarity between adjacent display areas, the pixel column at the boundary will always have either an entire column of positive or negative polarity, and this will not change. This causes the pixel column at the boundary to appear brighter or darker than other areas, forming a bright-dark line, which affects the display's performance. Summary of the Invention

[0005] The purpose of this application is to provide a driving module and display device to improve or eliminate uneven display caused by bright and dark lines and improve the display quality of the liquid crystal display.

[0006] To achieve the above objectives, this application provides a driving module including multiple source driver chips, each of which is connected to multiple rows of data lines on a display panel. The driving module further includes:

[0007] The polarity partitioning control module connects the source driver chips in odd-numbered columns to the pull-down power supply, and the source driver chips in even-numbered columns to the pull-up power supply and the pull-down power supply through the polarity partitioning control module. The connection between the source driver chips in even-numbered columns and the pull-down power supply forms a normal polarity mode, and the connection between the source driver chips in even-numbered columns and the pull-up power supply forms a polarity symmetry mode. The pixel columns at the boundary of the adjacent data lines controlled by adjacent source driver chips are also controlled.

[0008] A polarity inversion control module is connected to the source driver chip. The polarity inversion control module outputs a first polarity signal or a second polarity signal. The first polarity signal controls the polarity inversion interval of the pixel column at the boundary to be 1 frame. The second polarity signal controls the polarity inversion interval of the pixel column at the boundary to be n rows, where n is greater than or equal to 1 for at least part of the time within 1 frame.

[0009] The intelligent control module controls the operation of the polarity partition control module based on at least one of the displayed screen data and the measured voltage of the common electrode, and controls the operation of the polarity reversal control module based on at least the refresh rate.

[0010] Optionally, the intelligent control module includes an image receiving unit, a screen judgment unit, a partition judgment unit, and a reversal judgment unit. The image receiving unit is used to receive the display screen data. The screen judgment unit is connected to the image receiving unit and can predict the severity of crosstalk based on the display screen data. The partition judgment unit is connected to the screen judgment unit and can determine whether to enable polarity partitioning based on the deviation value of the measured voltage of the common electrode from the set voltage of the common electrode and the prediction result of the screen judgment unit. When the deviation value is greater than or equal to a first preset value, polarity partitioning is enabled to form the polarity symmetry mode. When the deviation value is less than the first preset value, polarity partitioning is disabled to form the normal polarity mode.

[0011] The inversion judgment unit is connected to the partition judgment unit. The inversion judgment unit can control the polarity inversion control module to work according to the refresh rate in the polarity symmetry mode. When the refresh rate is greater than or equal to the second preset value, the polarity inversion control module outputs the second polarity signal. When the refresh rate is less than the second preset value, the polarity inversion control module outputs the first polarity signal.

[0012] Optionally, the intelligent control module further includes an intelligent learning unit, with the screen judgment unit and the partition judgment unit connected to the intelligent learning unit. The intelligent learning unit can learn the judgment methods of the screen judgment unit and the partition judgment unit, and control the polarity partition control module to work; and / or

[0013] The polarity reversal judgment unit is connected to the intelligent learning unit, and the intelligent learning unit can learn the judgment method of the polarity reversal judgment unit and control the polarity reversal control module to work.

[0014] Optionally, the intelligent control module further includes a manual setting unit connected to the intelligent learning unit. The manual setting unit is used to input a first control command and a second control command. The first control command is used to control whether the polarity partition control module enables polarity partitioning. The intelligent learning unit can record the display screen data and the deviation value corresponding to the first control command to control the polarity partition control module.

[0015] The second control command is used to control the polarity reversal control module, and the intelligent learning unit can record the refresh rate corresponding to the second control command to control the polarity reversal control module.

[0016] Optionally, the intelligent control module further includes a detection unit, which is used to detect the viewing distance of the user viewing the display panel. When the viewing distance is less than or equal to a third preset value, the intelligent control module controls the polarity reversal control module to output the second polarity signal. When the viewing distance is greater than the third preset value, the intelligent control module controls the polarity reversal control module to output the first polarity signal.

[0017] Optionally, the driving module includes a timing controller, which includes the image receiving unit and the image judging unit; and / or

[0018] The timing controller includes the partition determination unit.

[0019] Optionally, the second polarity signal controls the pixel column polarity reversal interval at the boundary to be 1 row.

[0020] Optionally, the polarity partition control module includes a first transistor and a resistor. The control terminal of the first transistor is connected to the intelligent control module. The first terminal of the first transistor is connected to the pull-up power supply. The second terminal of the first transistor is connected to the source driver chip of the even-numbered column through a connection node. The resistor is connected to the connection node and the pull-down power supply.

[0021] Optionally, the polarity reversal control module includes a signal generator, a frequency converter, and a selector. The signal generator is used to output the first polarity signal. The frequency converter is connected to the signal generator and is used to convert the first polarity signal into a second polarity signal. The selector is connected to the source driver chip, the signal generator, the frequency converter, and the intelligent control module. The intelligent control module controls the selector to operate and output one of the first polarity signal and the second polarity signal to the source driver chip.

[0022] This application also provides a display device, including:

[0023] Display panel;

[0024] The drive module is connected to the display panel.

[0025] The driving module and display device disclosed in this application have the following beneficial effects:

[0026] In this application, the driving module includes multiple source driver chips, a polarity partitioning control module, a polarity inversion control module, and an intelligent control module. Each source driver chip is connected to multiple rows of data lines on the display panel. Odd-numbered rows of source driver chips are connected to pull-down power supplies, while even-numbered rows are connected to pull-up and pull-down power supplies through the polarity partitioning control module. The polarity inversion control module outputs a first polarity signal or a second polarity signal to control the polarity inversion interval of the pixel column at the boundary to be 1 frame or less, so that the pixel column at the boundary has alternating positive and negative values ​​within 1 frame. The intelligent control module controls the operation of the polarity partitioning control module based at least on the display screen data and the measured voltage of the common electrode, and controls the operation of the polarity inversion control module based at least on the refresh rate. The intelligent control module controls whether to perform polarity partitioning to eliminate crosstalk based on the severity of crosstalk, and controls the operation of the polarity inversion control module based on the obviousness of bright and dark lines after polarity partitioning, which can improve or eliminate display unevenness caused by bright and dark lines and improve the display quality of the display panel.

[0027] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0030] Figure 1 This is a schematic diagram of the drive module in Embodiment 1 of this application.

[0031] Figure 2 This is a schematic diagram of the display panel in the conventional polarity mode in Embodiment 1 of this application.

[0032] Figure 3 This is a schematic diagram showing the polarity symmetry of the display panel in Embodiment 1 of this application.

[0033] Figure 4 This is a schematic diagram of the display panel in polar symmetry mode in Embodiment 1 of this application.

[0034] Figure 5 This is a schematic diagram of the intelligent control module in Embodiment 1 of this application.

[0035] Figure 6 This is a schematic diagram of the judgment process of the intelligent control module in Embodiment 1 of this application.

[0036] Figure 7 This is a waveform diagram of the measured voltage of the common voltage in Embodiment 1 of this application.

[0037] Figure 8 This is a schematic diagram of a selector composed of two transistors in Embodiment 1 of this application.

[0038] Figure 9 This is a schematic diagram of a selector composed of logic gate circuits in Embodiment 1 of this application.

[0039] Figure 10 yes Figure 9 The diagram below illustrates the input and output relationship of the selector.

[0040] Figure 11 This is a schematic diagram of the drive module in Embodiment 2 of this application.

[0041] Figure 12 This is a schematic diagram of the comparator control polarity partitioning control module in Embodiment 2 of this application.

[0042] Figure 13 This is a schematic diagram of the connection between the XOR gate circuit and the signal line in Embodiment 2 of this application.

[0043] Figure 14 This is a truth representation of the XNOR gate circuit in Embodiment 2 of this application.

[0044] Figure 15 This is a schematic diagram of the display device in Embodiment 3 of this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100. Display panel; 110. Data cable; 101. First display area; 102. Second display area; 120. Subpixel;

[0047] 200. Driver module; 210. Source driver chip; 220. Polarity partitioning control module; 221. First transistor; 222. Resistor; 230. Polarity reversal control module; 231. Signal generator; 232. Frequency converter; 233. Selector; 2331. Second transistor; 2332. Third transistor; 2333. NOT gate; 2334. First AND gate; 2335. Second AND gate; 2336. OR gate; 240. Intelligent control module; 240a. Timing control... Controller; 240b, Intelligent Controller; 241, Image Receiving Unit; 242, Image Judgment Unit; 243, Partition Judgment Unit; 244, Inversion Judgment Unit; 245, First Output Unit; 246, Second Output Unit; 247, Intelligent Learning Unit; 248, Manual Setting Unit; 249, Detection Unit; 251, Pull-up Power Supply; 252, Pull-down Power Supply; 261, Comparator; 262, Fourth Transistor; 263, XNOR Gate Circuit; 271, First Signal Line; 272, Second Signal Line. Detailed Implementation

[0048] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0049] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0050] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0051] Example 1

[0052] See Figure 1 and Figure 2 As shown, in this embodiment, the driving module 200 is used to drive the display panel 100 to display the screen.

[0053] The display panel 100 includes multiple columns of data lines 110 and multiple sub-pixels 120 arranged in an array. Each column of sub-pixels 120 is positioned between two adjacent data lines 110. That is, there is one more column of data lines 110 than sub-pixels 120. Sub-pixels 120 in odd-numbered rows are connected to the data lines 110 on the first side of their adjacent data lines 110 in the same column, and sub-pixels 120 in even-numbered rows are connected to the data lines 110 on the second side of their adjacent data lines 110 in the same column. For example, the first side is the right side and the second side is the left side. Sub-pixels 120 in odd-numbered rows are connected to the right data lines 110 of their adjacent data lines 110 in the same column, and sub-pixels 120 in even-numbered rows are connected to the left data lines 110 of their adjacent data lines 110 in the same column.

[0054] The polarity inversion method of the display panel 100 is dot inversion, that is, the polarity of the sub-pixels 120 alternates between positive and negative in both the row and column directions. The polarity inversion interval of the display panel 100 is 1 frame. For example, in the current frame, the polarity of the data signals output by multiple data lines 110 in the row direction is "+-+-" in sequence, and in the next frame, the polarity of the data signals output by multiple data lines 110 in the row direction is "-+-+" in sequence.

[0055] The driver module 200 includes multiple source driver chips 210, a polarity partitioning control module 220, a polarity reversal control module 230, and an intelligent control module 240. Each source driver chip 210 is connected to multiple rows of data lines 110 of the display panel 100, i.e., multiple source driver chips 210 form multiple rows. The total number of source driver chips 210 can be odd or even. The source driver chips 210 in the odd-numbered rows are connected to a pull-down power supply 252, and the source driver chips 210 in the even-numbered rows are connected to both a pull-up power supply 251 and a pull-down power supply 252 through the polarity partitioning control module 220. The pull-down power supply 252 includes a ground terminal (GND). The voltage VDD of the pull-up power supply 251 is greater than the voltage of the pull-down power supply 252.

[0056] The intelligent control module 240 controls the polarity partition control module 220 to operate based on at least one of the displayed screen data and the measured voltage of the common electrode, forming a normal polarity mode or a polarity symmetry mode. Parameters such as the displayed screen data and the measured voltage of the common electrode can reflect the severity of crosstalk, and the intelligent control module 240 controls whether to enable polarity partitioning based on the severity of crosstalk. In normal polarity mode, the polarity partition control module 220 controls the pull-down power supply 252 to connect to the even-numbered source driver chip 210; in polarity symmetry mode, the polarity partition control module 220 controls the pull-up power supply 251 to connect to the even-numbered source driver chip 210.

[0057] The default state is the normal polarity mode. The pull-down power supply 252 outputs a low-level signal to the odd-numbered source driver chips 210, and the polarity of the first display area 101 controlled by the odd-numbered source driver chips 210 is "+-+-". The polarity partition control module 220 controls the even-numbered source driver chips 210 to disconnect from the pull-up power supply 251, and the pull-down power supply 252 outputs a low-level signal to the even-numbered source driver chips 210, and the polarity of the second display area 102 controlled by the even-numbered source driver chips 210 is "+-+-", such as... Figure 2 As shown.

[0058] In polarity symmetry mode, the polarity of the first display area 101 controlled by the odd-numbered source driver chips 210 remains unchanged. The polarity partitioning control module 220 controls the even-numbered source driver chips 210 to conduct with the pull-up power supply 251. The pull-up power supply 251 outputs a high-level signal to the even-numbered source driver chips 210, and the polarity of the second display area 102 controlled by the even-numbered source driver chips 210 becomes "-+-+". The adjacent display areas of the display panel 100 are polarity symmetrical, such as... Figure 4 As shown.

[0059] It should be understood that if the polarity of the second display area 102 on the right is "-+-+", that is, the polarities of adjacent first display areas 101 and second display areas 102 are symmetrical, and the pixel voltages and common voltages of the first display areas 101 and second display areas 102 are coupled in opposite directions, the coupling can be canceled, improving or eliminating crosstalk. However, at the boundary between the first display areas 101 and second display areas 102, the entire pixel column may have the same positive or negative polarity, such as... Figure 3 As shown, the polarity of the sub-pixels 120 in the row and column directions of the other areas of the first display area 101 and the second display area 102 alternates between positive and negative, causing the pixel columns at the junction to become brighter or darker than other areas, thus forming bright and dark lines, which affects the display effect of the display panel 100.

[0060] To improve or eliminate display unevenness caused by bright and dark lines, the drive module 200 in this embodiment further includes a polarity inversion control module 230, which is connected to at least a portion of the source drive chips 210. The intelligent control module 240 controls the polarity inversion control module 230 to output a first polarity signal (P1) or a second polarity signal (P2) based on the refresh rate of the display panel 100. Parameters such as refresh rate reflect the degree of brightness and darkness of the lines; the higher the refresh rate, the more obvious the lines. The intelligent control module 240 controls the polarity inversion control module 230 to operate based on the degree of brightness and darkness of the lines.

[0061] The first polarity signal controls the pixel column polarity reversal interval at the boundary to be 1 frame, and the second polarity signal controls the pixel column polarity reversal interval to be n rows, where n is greater than or equal to 1 for at least part of the time within 1 frame. n can be an odd or even number greater than or equal to 1. For example, the second polarity signal controls the polarity reversal interval of the display panel 100 to be 1 line, 2 lines, 3 lines, 4 lines, or 8 lines, etc. In addition, the polarity reversal interval within one frame can also vary. For example, the reversal interval can alternate between 2 rows and 1 row. For instance, the polarity of subpixel 120 in the 1st and 2nd rows remains unchanged, the polarity of subpixel 120 in the 3rd row is reversed, the polarity of subpixel 120 in the 4th and 5th rows is reversed again, and the polarity of subpixel 120 in the 6th row is reversed again. The reversal interval in the next frame can alternate between 1 row and 2 rows. For instance, the polarity of subpixel 120 in the 1st row remains unchanged, the polarity of subpixel 120 in the 2nd and 3rd rows is reversed, the polarity of subpixel 120 in the 4th row is reversed again, and the polarity of subpixel 120 in the 5th and 6th rows is reversed again.

[0062] It should be noted that when the polarity reversal control module 230 outputs the second polarity signal, the source driver chip 210 can control the polarity reversal of the data voltage of one data line 110 on the left or right side of the pixel column at the junction. This data line 110 is defined as the first data line, and the other data lines 110 of the display panel 100 are defined as the second data lines.

[0063] The display panel 100 is divided into X display areas, where X is a positive integer greater than or equal to 2. Each display area is controlled by at least one source driver chip 210. In polarity symmetry mode, the X display areas form X-1 pixel columns at the boundaries. The polarity inversion control module 230 can output a second polarity signal to the X-1 source driver chips 210, which can control the polarity inversion of a data line 110 on the left or right side of the pixel column at the boundary.

[0064] When each display area is controlled by a source driver chip 210, there may be pixel columns at the boundary between the leftmost data line 110 and the rightmost data line 110 in the data lines 110 connected to the source driver chip 210. The source driver chip 210 can control the pixel columns at the boundary between the two boundary areas. For example, if the display panel 100 is divided into four display areas, there are pixel columns at the boundary between the first display area 101 and the second display area 102, between the second display area 102 and the third display area, and between the third display area and the fourth display area, the polarity of the leftmost and rightmost data lines 110 of the source driver chip 210 in the second display area 102, and the rightmost data line 110 of the source driver chip 210 in the third display area (or the leftmost data line 110 of the source driver chip 210 in the fourth display area) can be reversed individually.

[0065] In polarity symmetry mode, the polarity reversal control module 230 outputs a second polarity signal, and the polarity of the sub-pixels 120 in the pixel column at the boundary alternates between positive and negative. Although the polarity reversal method of the pixel column at the boundary is not completely consistent with the polarity reversal method of other areas of the first display area 101 and the second display area 102, they all alternate between positive and negative polarities, which can improve or eliminate the uneven display caused by bright and dark lines.

[0066] In this embodiment, the driving module 200 includes multiple source driver chips 210, a polarity partition control module 220, a polarity inversion control module 230, and an intelligent control module 240. Each source driver chip 210 is connected to multiple rows of data lines 110 of the display panel 100. Odd-numbered rows of source driver chips 210 are connected to pull-down power supplies 252, and even-numbered rows of source driver chips 210 are connected to pull-up power supplies 251 and pull-down power supplies 252 through the polarity partition control module 220. The polarity inversion control module 230 outputs a first polarity signal or a second polarity signal to control the polarity inversion interval of the pixel column at the boundary to be 1 frame or less than 1 frame, so that the pixel column at the boundary has positive and negative alternation within 1 frame. The intelligent control module 240 controls the polarity partition control module 220 to work based on at least one of the display screen data and the measured voltage of the common electrode, and controls the polarity inversion control module 230 to work based on at least the refresh rate. The intelligent control module 240 controls whether to perform polarity partitioning to eliminate crosstalk based on the severity of crosstalk, and controls the polarity reversal control module 230 to work based on the degree of brightness and darkness of the bright and dark lines after polarity partitioning. This can improve or eliminate uneven display caused by bright and dark lines and improve the display quality of the display panel 100.

[0067] In some embodiments, see Figure 5 As shown, the intelligent control module 240 includes an image receiving unit 241, a screen judgment unit 242, a partition judgment unit 243, and a reversal judgment unit 244. The image receiving unit 241 receives display screen data. The screen judgment unit 242 is connected to the image receiving unit 241 and can predict the severity of crosstalk based on the display screen data. When the display panel 100 displays special screens, such as Excel screens (similar to Excel spreadsheets), alternating black and white columns, and TXT text documents, crosstalk is prone to occur. The screen judgment unit 242 can predict the severity of crosstalk based on parameters such as the type of display screen and the area of ​​screens prone to crosstalk.

[0068] The partition judgment unit 243 is connected to the screen judgment unit 242. The partition judgment unit 243 can determine whether to enable polarity partitioning based on the deviation of the measured voltage of the common electrode from the set voltage of the common electrode and the prediction result of the screen judgment unit. The set voltage of the common electrode is Vcom, the maximum value of the set voltage of the common electrode is Vmax, and the minimum value of the set voltage of the common electrode is Vmin. Figure 7 As shown. When the deviation value is greater than or equal to the first preset value, the polarity partition is enabled to form a polarity symmetry mode; when the deviation value is less than the first preset value, the polarity partition is disabled to form a normal polarity mode.

[0069] The inversion judgment unit 244 is connected to the partition judgment unit 243. The inversion judgment unit 244 can control the polarity inversion control module 230 to work according to the refresh rate in polarity symmetry mode. When the refresh rate is greater than or equal to the second preset value, the polarity inversion control module 230 outputs the second polarity signal. When the refresh rate is less than the second preset value, the polarity inversion control module 230 outputs the first polarity signal.

[0070] When the intelligent control module 240 is working, the image receiving unit 241 receives the display screen data, and the screen judgment unit 242 predicts the severity of crosstalk based on the display screen data. If the screen is non-crosstalk or has slight crosstalk, it waits for the next frame to arrive. If the screen has severe crosstalk, it proceeds to the next step of determining whether to partition the screen. Figure 6 As shown. The partition judgment unit 243 judges the magnitude of the deviation value and the first preset value. If the deviation value is greater than or equal to the first preset value, it indicates whether the common voltage fluctuation meets the preset conditions. Then, the polarity partition control module 220 is activated to form a polarity symmetrical mode. If the deviation value is less than the first preset value, it indicates that the common voltage fluctuation does not meet the preset conditions. Then, the polarity partition control module 220 is deactivated to form a normal polarity mode.

[0071] After polarity partitioning is enabled, the polarity inversion judgment unit 244 determines the refresh rate. If the refresh rate meets the preset conditions, it controls the polarity inversion control module 230 to output a second polarity signal; if the refresh rate does not meet the preset conditions, it controls the polarity inversion control module 230 to output a first polarity signal. Furthermore, whether bright and dark lines appear on the displayed screen is also related to the type of displayed screen. Lower grayscale (20-120) screens and solid color screens are prone to bright and dark lines. After determining the refresh rate, the polarity inversion judgment unit 244 can further determine the type of displayed screen. If the displayed screen is prone to bright and dark lines, the polarity inversion judgment unit 244 controls the polarity inversion control module 230 to output a second polarity signal.

[0072] It should be noted that the display screen type can also be determined by the screen determination unit 242, that is, the screen determination unit 242 determines whether the display screen is prone to bright and dark lines, and the inversion determination unit 244 determines the refresh rate.

[0073] The intelligent control module 240 controls the polarity reversal control module 230 to work according to the degree of brightness and darkness of the bright and dark lines after polarity partitioning. When the bright and dark lines are obvious, the polarity reversal control module 230 outputs a second polarity signal to improve or eliminate the uneven display caused by the bright and dark lines and improve the display quality of the display panel 100. When the bright and dark lines are not obvious, the polarity reversal control module 230 outputs a first polarity signal, which can reduce the workload of the source driver chip 210.

[0074] In some embodiments, the intelligent control module 240 further includes a first output unit 245 and a second output unit 246. The first output unit 245 is connected to the partition judgment unit 243, and the partition judgment unit 243 controls the first output unit 245 to output a control signal to control the polarity partition control module 220. The second output unit 246 is connected to the inversion judgment unit 244, and the inversion judgment unit 244 controls the second output unit 246 to output a control signal to control the polarity inversion control module 230. It should be understood that the partition judgment unit 243 may directly control the polarity partition control module 220 or indirectly control the polarity partition control module 220 through the first output unit 245, and the inversion judgment unit 244 may directly control the polarity inversion control module 230 or indirectly control the polarity inversion control module 230 through the second output unit 246.

[0075] The intelligent control module 240 also includes an intelligent learning unit 247, to which both the screen judgment unit 242 and the partition judgment unit 243 are connected. The intelligent learning unit 247 includes a memory and a processor. The memory stores AI (artificial intelligence) models and related parameters, and the processor runs the AI ​​models. The intelligent learning unit 247 can learn the judgment methods of the screen judgment unit 242 and the partition judgment unit 243, thus controlling the operation of the polarity partition control module 220.

[0076] The intelligent learning unit 247 learns the judgment methods of the screen judgment unit 242 and the partition judgment unit 243, and can directly determine whether polarity partitioning needs to be enabled based on parameters such as the type of display screen, the area of ​​screens prone to crosstalk, and the measured voltage of the common electrode, without requiring the screen judgment unit 242 and the partition judgment unit 243 to make judgments sequentially.

[0077] In some embodiments, the inversion judgment unit 244 is connected to the intelligent learning unit 247, and the intelligent learning unit 247 can learn the judgment method of the inversion judgment unit 244 and control the polarity inversion control module 230 to work.

[0078] The intelligent learning unit 247 can determine whether it is necessary to control the polarity reversal control module 230 to work based on the judgment method of the reversal judgment unit 244, according to parameters such as the display screen type, the measured voltage of the common electrode and the refresh rate, and adjust the polarity of the pixel column at the junction separately.

[0079] In some embodiments, the intelligent control module 240 further includes a manual setting unit 248, which is connected to the intelligent learning unit 247. The manual setting unit 248 is used to input a first control command and a second control command. The first control command can be output to a first output unit 245, and the second control command can be output to a second output unit 246. The first control command is used to control whether the polarity partition control module 220 enables polarity partitioning. The intelligent learning unit 247 can record the display screen data and deviation value corresponding to the first control command to control the polarity partition control module 220. The second control command is used to control the polarity inversion control module 230. The intelligent learning unit 247 can record the refresh rate and display screen data corresponding to the second control command to control the polarity inversion control module 230.

[0080] The polarity partition control module 220 determines whether to enable polarity partitioning based on the display screen data, and the polarity inversion control module 230 determines whether to adjust the polarity of the pixel column at the boundary separately based on the display screen data. When some crosstalk screens or screens with bright and dark lines are not pre-stored, the partition judgment unit 243 will not control the polarity partition control module 220 to enable polarity partitioning, and the inversion judgment unit 244 will not control the polarity inversion control module 230 to adjust the polarity of the pixel column at the boundary separately.

[0081] The intelligent control module 240 also includes a manual setting unit 248, which can input a first control command and a second control command. The first control command directly controls the polarity partition control module 220 to activate the polarity partition, and the second control command directly controls the polarity reversal control module 230 to individually adjust the polarity of the pixel column at the boundary. The intelligent learning unit 247 records parameters such as the display screen type, the measured voltage of the common electrode, and the refresh rate corresponding to the first and second control commands. When encountering the same or similar working conditions in subsequent operations, it directly controls the polarity partition control module 220 and the polarity reversal control module 230 to operate.

[0082] In some embodiments, the intelligent control module 240 further includes a detection unit 249, which may include a camera, a laser rangefinder, etc., and is used to detect the viewing distance of the user viewing the display panel 100. When the viewing distance is less than or equal to a third preset value, the intelligent control module 240 controls the polarity reversal control module 230 to output a second polarity signal; when the viewing distance is greater than the third preset value, the intelligent control module 240 controls the polarity reversal control module 230 to output a first polarity signal.

[0083] If the viewing distance is less than or equal to the third preset value, it means that the viewing distance is small and the bright and dark lines are easy to see. The polarity reversal control module 230 can be controlled to output the second polarity signal, that is, to adjust the polarity of the pixel column at the junction separately to eliminate the bright and dark lines. If the viewing distance is greater than the third preset value, it means that the viewing distance is large and the bright and dark lines are not easy to see. The polarity reversal control module 230 can be controlled to output the first polarity signal, that is, it is not necessary to adjust the polarity of the pixel column at the junction separately.

[0084] In some embodiments, the second polarity signal controls the pixel column polarity reversal interval at the boundary for one row, such as... Figure 4 As shown.

[0085] The second polarity signal controls the pixel column polarity reversal interval at the boundary to be 1 row, which realizes the polarity reversal of the pixel column at the boundary. The pixel column polarity reversal method at the boundary is the same as the other pixel column polarity reversal method, which can eliminate bright and dark lines and improve the display quality of the display panel 100.

[0086] In some embodiments, the polarity partitioning control module 220 includes a first transistor 221 and a resistor 222. The control terminal of the first transistor 221 is connected to the intelligent control module 240. The first terminal of the first transistor 221 is connected to the pull-up power supply 251, and the second terminal of the first transistor 221 is connected to the source driver chip 210 of the even-numbered column through connection node A. The resistor 222 connects connection node A and the pull-down power supply 252. The first output unit 245 can output a high-level signal or a low-level signal to enable polarity partitioning; therefore, the first transistor 221 can be either an N-channel transistor or a P-channel transistor.

[0087] The polarity partition control module 220 consists of a transistor and a resistor 222. It has a simple structure and can reduce the manufacturing cost of the drive module 200.

[0088] In some embodiments, the polarity reversal control module 230 includes a signal generator 231, a frequency converter 232, and a selector 233. The signal generator 231 outputs a first polarity signal, and the frequency converter 232 is connected to the signal generator 231, converting the first polarity signal into a second polarity signal. The selector 233 is connected to at least a portion of the source driver chip 210, the signal generator 231, the frequency converter 232, and the intelligent control module 240. The intelligent control module 240 controls the selector 233 to output one of the first polarity signal and the second polarity signal to the source driver chip 210.

[0089] The frequency converter 232 converts the first polarity signal into a second polarity signal, which simplifies the structure of the polarity reversal control module 230 and reduces the manufacturing cost of the drive module 200.

[0090] It should be noted that the signal generator 231 can also be connected to all source driver chips 210. The signal generator 231 outputs a first polarity signal to all source driver chips 210. The first polarity signal controls the polarity reversal interval of the second data line to 1 frame through the source driver chip 210.

[0091] In addition, the polarity reversal control module 230 may include a signal generator 231 and a frequency converter 232. The frequency converter 232 is used to convert the first polarity signal into a second polarity signal. However, it is not limited to this. The polarity reversal control module 230 may also include two signal generators 231, one of which outputs the first polarity signal and the other outputs the second polarity signal. The specific configuration may vary depending on the circumstances.

[0092] In some embodiments, see Figure 8 As shown, selector 233 includes a second transistor 2331 and a third transistor 2332. The control terminals of the second transistor 2331 and the third transistor 2332 are both connected to the intelligent control module 240. The first terminal of the second transistor 2331 is connected to the signal generator 231, the first terminal of the third transistor 2332 is connected to the frequency converter 232, and the second terminals of the second transistor 2331 and the third transistor 2332 are both connected to at least part of the source driver chip 210.

[0093] Of the second transistor 2331 and the third transistor 2332, one is a P-channel transistor and the other is an N-channel transistor. For example, the second transistor 2331 is a P-channel transistor and the third transistor 2332 is an N-channel transistor. The second output unit 246 can output a high-level signal or a low-level signal to control the selector 233 to output a second polarity signal, so the channel types of the second transistor 2331 and the third transistor 2332 can be interchanged.

[0094] Selector 233 consists of two transistors. Selector 233 has a simple structure and can reduce the manufacturing cost of drive module 200.

[0095] It should be noted that selector 233 can be composed of two transistors, but is not limited to this; selector 233 can also be composed of logic gates, depending on the specific situation. For an example, see [link to example]. Figure 9 As shown, selector 233 includes NOT gate 2333, first AND gate 2334, second AND gate 2335, and OR gate 2336. The first input terminal of selector 233 is the first input terminal (D0) of first AND gate 2334, and the second input terminal of selector 233 is the first input terminal (D1) of second AND gate 2335. The input terminals of NOT gate 2333 and first AND gate 2334 are the control terminal (S) of selector 233. The output terminal of NOT gate 2333 is connected to the second input terminal of second AND gate 2335. The output terminals of first AND gate 2334 and second AND gate 2335 are respectively connected to the two input terminals of OR gate 2336. The output terminal of OR gate 2336 is the output terminal (Y1) of selector 233.

[0096] The first input terminal of selector 233 is connected to signal generator 231, the second input terminal of selector 233 is connected to frequency converter 232, and the output terminal of selector 233 is connected to at least part of source driver chip 210. The intelligent control module 240 outputs a high-level signal to control selector 233 to output a second polarity signal, and outputs a low-level signal to control selector 233 to output a first polarity signal, such as... Figure 9 and Figure 10 As shown.

[0097] Example 2

[0098] The difference between Embodiment 2 and Embodiment 1 is that the structure of the intelligent control module 240 is different.

[0099] See Figure 11 As shown, the intelligent control module 240 includes a timing controller 240a and an intelligent controller 240b. The timing controller 240a includes an image receiving unit 241 and an image judgment unit 242. The timing controller 240a controls the polarity partition control module 220 according to the displayed image data. The intelligent controller 240b includes a reversal judgment unit 244, a manual setting unit 248, an intelligent learning unit 247, and a detection unit 249.

[0100] The image receiving unit 241 and the image judging unit 242 are integrated in the timing controller 240a, which can reduce the manufacturing cost of the drive module 200.

[0101] It should be noted that the timing controller 240a includes an image receiving unit 241 and a screen judgment unit 242, but is not limited to these. The timing controller 240a may also include a partition judgment unit 243. The timing controller 240a controls the polarity partition control module 220 based on the measured voltage of the common electrode, depending on the specific situation. Alternatively, the timing controller 240a may also include an image receiving unit 241, a screen judgment unit 242, and a partition judgment unit 243, and the timing controller 240a controls the polarity partition control module 220 based on the displayed screen data and the measured voltage of the common electrode.

[0102] In some embodiments, the intelligent controller 240b can also be replaced by comparator 261. The source driver chips 210 of the odd-numbered columns are connected to the pull-down power supply 252 via the first signal line 271, and the source driver chips 210 of the even-numbered columns are connected to the pull-up power supply 251 via the second signal line 272. The first input terminal of comparator 261 is connected to the first signal line 271, the second input terminal of comparator 261 is connected to the second signal line 272, and the output terminal of comparator 261 is connected to the selector 233 of the polarity inversion control module 230, as shown below. Figure 12 As shown. When the timing controller 240a activates the polarity partition, the voltages of the first signal line 271 and the second signal line 272 are different, and the comparator 261 controls the polarity inversion control module 230 to output the second polarity signal.

[0103] Alternatively, a fourth transistor 262 can be placed between selector 233 and pull-up power supply 251. The control terminal of the fourth transistor 262 is connected to the output terminal of comparator 261, the first terminal of the fourth transistor 262 is connected to pull-up power supply 251, and the second terminal of the fourth transistor 262 is connected to the control terminal of selector 233. When the timing controller 240a activates the polarity partition, the voltages of the first signal line 271 and the second signal line 272 are different. Comparator 261 controls the fourth transistor 262 to turn on, and pull-up power supply 251 controls the polarity inversion control module 230 to output the second polarity signal.

[0104] In some embodiments, the intelligent controller 240b may also be replaced by an XNOR gate 263. See also Figure 13 and Figure 14As shown, the first input terminal (B) of the XOR gate 263 is connected to the first signal line 271, the second input terminal (C) of the XOR gate 263 is connected to the second signal line 272, and the output terminal (Y2) of the XOR gate 263 is connected to the selector 233 of the polarity inversion control module 230. When the timing controller 240a activates the polarity partition, the voltages of the first signal line 271 and the second signal line 272 are different. The XOR gate 263 outputs a low-level signal to control the polarity inversion control module 230 to output a second polarity signal, or the XOR gate 263 outputs a low-level signal to control the fourth transistor 262 to turn on, and the pull-up power supply 251 controls the polarity inversion control module 230 to output a second polarity signal.

[0105] Example 3

[0106] See Figure 15 As shown, in this embodiment, the display device includes a display panel 100 and a driving module 200. The driving module 200 is connected to the display panel 100 and includes the driving module 200 disclosed in Embodiment 1 or Embodiment 2.

[0107] In this embodiment, the display device includes a display panel 100 and a driving module 200. The driving module 200 includes multiple source driver chips 210, a polarity partition control module 220, a polarity inversion control module 230, and an intelligent control module 240. Each source driver chip 210 is connected to multiple rows of data lines 110 of the display panel 100. Odd-numbered rows of source driver chips 210 are connected to pull-down power supplies 252, and even-numbered rows of source driver chips 210 are connected to pull-up power supplies 251 and pull-down power supplies 252 through the polarity partition control module 220. The polarity inversion control module 230 outputs a first polarity signal or a second polarity signal to control the polarity inversion interval of the pixel column at the boundary to be 1 frame or less than 1 frame, so that the pixel column at the boundary has positive and negative alternation within 1 frame. The intelligent control module 240 controls the operation of the polarity partition control module 220 at least according to the display screen data and the measured voltage of the common electrode, and controls the operation of the polarity inversion control module 230 at least according to the refresh rate. The intelligent control module 240 controls whether to perform polarity partitioning to eliminate crosstalk based on the severity of crosstalk, and controls the polarity reversal control module 230 to work based on the degree of brightness and darkness of the bright and dark lines after polarity partitioning. This can improve or eliminate uneven display caused by bright and dark lines and improve the display quality of the display panel 100 and the display device.

[0108] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0109] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0110] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0111] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A driving module comprising a plurality of source driver chips, each of the source driver chips being connected to multiple rows of data lines of a display panel, characterized in that, The drive module also includes: The polarity partitioning control module connects the source driver chips in odd-numbered columns to the pull-down power supply, and the source driver chips in even-numbered columns to the pull-up power supply and the pull-down power supply through the polarity partitioning control module. The connection between the source driver chips in even-numbered columns and the pull-down power supply forms a normal polarity mode, and the connection between the source driver chips in even-numbered columns and the pull-up power supply forms a polarity symmetry mode. The pixel columns at the boundary of the adjacent data lines controlled by adjacent source driver chips are also controlled. A polarity inversion control module is connected to the source driver chip. The polarity inversion control module outputs a first polarity signal or a second polarity signal. The first polarity signal controls the polarity inversion interval of the pixel column at the boundary to be 1 frame. The second polarity signal controls the polarity inversion interval of the pixel column at the boundary to be n rows, where n is greater than or equal to 1 for at least part of the time within 1 frame. The intelligent control module controls the operation of the polarity partition control module based on at least one of the displayed screen data and the measured voltage of the common electrode, and controls the operation of the polarity reversal control module based on at least the refresh rate.

2. The drive module according to claim 1, characterized in that, The intelligent control module includes an image receiving unit, a screen judgment unit, a partition judgment unit, and a reversal judgment unit. The image receiving unit is used to receive the display screen data. The screen judgment unit is connected to the image receiving unit and can predict the severity of crosstalk based on the display screen data. The partition judgment unit is connected to the screen judgment unit and can determine whether to enable polarity partitioning based on the deviation value of the measured voltage of the common electrode from the set voltage of the common electrode and the prediction result of the screen judgment unit 242. When the deviation value is greater than or equal to a first preset value, polarity partitioning is enabled to form the polarity symmetry mode. When the deviation value is less than the first preset value, polarity partitioning is disabled to form the normal polarity mode. The inversion judgment unit is connected to the partition judgment unit. The inversion judgment unit can control the polarity inversion control module to work according to the refresh rate in the polarity symmetry mode. When the refresh rate is greater than or equal to the second preset value, the polarity inversion control module outputs the second polarity signal. When the refresh rate is less than the second preset value, the polarity inversion control module outputs the first polarity signal.

3. The drive module according to claim 2, characterized in that, The intelligent control module further includes an intelligent learning unit. The screen judgment unit and the partition judgment unit are connected to the intelligent learning unit. The intelligent learning unit can learn the judgment methods of the screen judgment unit and the partition judgment unit, and control the polarity partition control module to work; and / or The polarity reversal judgment unit is connected to the intelligent learning unit, and the intelligent learning unit can learn the judgment method of the polarity reversal judgment unit and control the polarity reversal control module to work.

4. The drive module according to claim 3, characterized in that, The intelligent control module further includes a manual setting unit, which is connected to the intelligent learning unit. The manual setting unit is used to input a first control command and a second control command. The first control command is used to control whether the polarity partition control module enables polarity partitioning. The intelligent learning unit can record the display screen data and the deviation value corresponding to the first control command to control the polarity partition control module. The second control command is used to control the polarity reversal control module, and the intelligent learning unit can record the refresh rate corresponding to the second control command to control the polarity reversal control module.

5. The drive module according to claim 3, characterized in that, The intelligent control module further includes a detection unit, which is used to detect the viewing distance of the user viewing the display panel. When the viewing distance is less than or equal to a third preset value, the intelligent control module controls the polarity reversal control module to output the second polarity signal. When the viewing distance is greater than the third preset value, the intelligent control module controls the polarity reversal control module to output the first polarity signal.

6. The drive module according to claim 2, characterized in that, The driving module includes a timing controller, which includes the image receiving unit and the image judging unit; and / or The timing controller includes the partition determination unit.

7. The drive module according to claim 1, characterized in that, The second polarity signal controls the polarity reversal interval of the pixel column at the boundary to be 1 row.

8. The drive module according to claim 1, characterized in that, The polarity partition control module includes a first transistor and a resistor. The control terminal of the first transistor is connected to the intelligent control module. The first terminal of the first transistor is connected to the pull-up power supply. The second terminal of the first transistor is connected to the source driver chip of the even-numbered column through a connection node. The resistor is connected to the connection node and the pull-down power supply.

9. The drive module according to claim 1, characterized in that, The polarity reversal control module includes a signal generator, a frequency converter, and a selector. The signal generator is used to output a first polarity signal. The frequency converter is connected to the signal generator and is used to convert the first polarity signal into a second polarity signal. The selector is connected to the source driver chip, the signal generator, the frequency converter, and the intelligent control module. The intelligent control module controls the selector to output one of the first polarity signal and the second polarity signal to the source driver chip.

10. A display device, characterized in that, include: Display panel; The driving module as described in any one of claims 1 to 9 is connected to the display panel.

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