Display driving circuit and display panel

Abstract

The invention discloses a display driving circuit and a display panel, the display driving circuit comprises a first display unit and a second display unit which are sequentially arranged along a row direction, and an adjusting line arranged between the first display unit and the second display unit, the first display unit comprises first to Nth first data lines which are sequentially arranged along the row direction and have sequentially opposite polarities, and the second display unit comprises second to Nth second data lines which are sequentially arranged along the row direction; the second display unit comprises first to Mth second data lines which are sequentially arranged in the row direction and are sequentially opposite in polarity, each first data line and each second data line are electrically connected with a plurality of pixel electrodes, when the polarity of the Nth first data line is opposite to the polarity of the first second data line, the adjusting line is used for inputting voltage of the common electrode, and when the polarity of the Nth first data line is opposite to the polarity of the Mth second data line, the adjusting line is used for adjusting the voltage of the common electrode. When the first display unit or the second display unit is used for conducting polarity overturning so that the polarity of the Nth first data line can be the same as that of the first second data line, the adjusting line is used for inputting the voltage with the polarity the same as that of the (N-1) th first data line, and deviation of the actual charging voltage of the pixel electrode is avoided.

Description

Technical Field

[0001] This application relates to the field of display panel technology, specifically to a display driving circuit and a display panel. Background Technology

[0002] With the rapid development of display technology, the market demand for high-resolution, high-refresh-rate, and narrow-bezel display panels is increasing. To meet this demand, existing high-resolution display panels typically employ multiple source driver ICs packaged in chip-on-film (COF) technology to work collaboratively in a multi-path driving manner, jointly driving a large number of data lines on the panel. Each source driver IC is responsible for driving hundreds of data lines, thereby driving the pixel array.

[0003] In liquid crystal display panels, polarity reversal technology is commonly used to prevent the polarization of liquid crystal molecules. This technology involves flipping the polarity of multiple data lines driven by a source driver chip. However, when two adjacent source driver chips are performing their own independent polarity reversals, the last data line driven by the previous source driver chip may have the same voltage polarity as the first data line driven by the next source driver chip.

[0004] Because of the inherent parasitic capacitance (Cpd and Cpd') between the data lines and the pixel electrodes, when the polarities of these two adjacent data lines are the same, two feedthrough voltages in the same direction will be coupled to the pixel electrode located between the two adjacent data lines, which will enhance the superposition of the coupled voltage of the pixel electrode, thereby causing the actual charging voltage of the pixel electrode in that column to deviate. Summary of the Invention

[0005] The purpose of this application is to provide a display driving circuit and a display panel to solve the problem that the actual charging voltage of the pixel electrode deviates when the polarities of two adjacent data lines are the same.

[0006] To achieve the objectives of this application, the following technical solution is provided: In a first aspect, the present invention provides a display driving circuit, comprising: a first display unit and a second display unit arranged sequentially along a row direction, the first display unit comprising 1 to N first data lines arranged sequentially along the row direction, wherein any two adjacent first data lines have opposite polarities, the second display unit comprising 1 to M second data lines arranged sequentially along the row direction, wherein any two adjacent second data lines have opposite polarities, each first data line and each second data line being electrically connected to a plurality of pixel electrodes, wherein N and M are both positive integers greater than or equal to 2; and an adjustment line disposed between the first display unit and the second display unit; wherein, when the polarity of the Nth first data line is opposite to that of the 1st second data line, the adjustment line is used to input a voltage of a common electrode; when the first display unit or the second display unit is used to perform polarity reversal so that the polarity of the Nth first data line is the same as that of the 1st second data line, the adjustment line is used to input a voltage with the same polarity as the (N-1)th first data line.

[0007] In one embodiment, the display driving circuit further includes a first source driving module and a second source driving module. The first source driving module is electrically connected to the adjustment line and each of the first data lines, and the second source driving module is electrically connected to each of the second data lines. The first source driving module is used to input voltages of opposite polarity to any two adjacent first data lines, and is also used to control the voltage of the common electrode of the adjustment line or a voltage with the same polarity as the (N-1)th first data line. The second source driving module is used to output voltages of opposite polarity to any two adjacent second data lines.

[0008] In one embodiment, the adjustment line is directly electrically connected to the first source drive module, and the first source drive module is used to input the voltage of the common electrode or the voltage with the same polarity as the (N-1)th first data line to the adjustment line.

[0009] In one embodiment, the display driving circuit further includes a switching module, which is electrically connected to the adjustment line, the first source driving module, and the (N-1)th first data line. The switching module is used to electrically connect to a common electrode. The first source driving module is used to output a first signal and a second signal to the switching module. The switching module is used to connect the adjustment line to the (N-1)th first data line according to the first signal and the second signal, or the switching module is used to connect the adjustment line to the common electrode according to the first signal and the second signal.

[0010] In one embodiment, the switching module includes a first thin-film transistor and a second thin-film transistor. The drains of the first and second thin-film transistors are both electrically connected to the adjustment line. The gates of the first and second thin-film transistors are both electrically connected to the first source driving module. The source of the first thin-film transistor is electrically connected to the (N-1)th first data line. The source of the second thin-film transistor is used to be electrically connected to the common electrode.

[0011] In one embodiment, the display driving circuit further includes a timing control module, which is electrically connected to both the first source driving module and the second source driving module. The timing control module outputs a switching control signal to both the first and second source driving modules. The first source driving module switches the polarity of each first data line according to the switching control signal. The first source driving module also controls the voltage of the common electrode of the adjustment line input or a voltage with the same polarity as the (N-1)th first data line according to the switching control signal. Alternatively, the second source driving module switches the polarity of each second data line according to the switching control signal.

[0012] In one embodiment, the display driving circuit includes multiple display units and multiple source driving modules. The multiple display units are arranged sequentially along the row direction. In two adjacent display units, the preceding display unit in the row direction is configured as the first display unit, and the following display unit is configured as the second display unit. The multiple source driving modules are electrically connected to the multiple display units in a one-to-one correspondence. The source driving module electrically connected to the first display unit is configured as the first source driving module, and the source driving module electrically connected to the second display unit is configured as the second source driving module. There are multiple adjustment lines, and one adjustment line is provided between any two adjacent display units.

[0013] In one embodiment, the multiple adjustment lines are directly electrically connected to each of the multiple first source drive modules.

[0014] In one embodiment, the display driving circuit further includes a plurality of switching modules, wherein the plurality of switching modules are electrically connected one-to-one with the plurality of adjustment lines and the (N-1)th first data line of the plurality of first display units; the plurality of switching modules are electrically connected one-to-one with the plurality of first source driving modules, or at least two of the switching modules are electrically connected to the same first source driving module.

[0015] In a second aspect, the present invention also provides a display panel, including a pixel array and a display driving circuit according to any one of the embodiments of the first aspect, wherein the pixel array includes a common electrode and a plurality of pixel electrodes arranged in an array, and each of the first data lines and each of the second data lines is electrically connected to the plurality of pixel electrodes.

[0016] The display driving circuit provided in this application comprises an adjustment line, a first display unit, and a second display unit arranged sequentially along the row direction. The adjustment line is positioned between the first and second display units. The first display unit includes 1 to N first data lines arranged sequentially along the row direction, with any two adjacent first data lines having opposite polarities. The second display unit includes 1 to M second data lines arranged sequentially along the row direction, with any two adjacent second data lines having opposite polarities. Each first data line and each second data line is electrically connected to multiple pixel electrodes. N and M are both positive integers greater than or equal to 2. Specifically, when the Nth first data line is connected to the 1st first data line... When the polarities of the two data lines are opposite, the adjustment line is used to input the voltage of the common electrode. When the first display unit or the second display unit is used to perform polarity reversal so that the polarity of the Nth first data line is the same as that of the 1st second data line, the adjustment line is used to input a voltage with the same polarity as the (N-1)th first data line, so that the first display unit or the second display unit performs polarity reversal. When the polarity of the Nth first data line is the same as that of the 1st second data line, the coupling voltage generated by the adjustment line to the pixel electrode can cancel out the coupling voltage generated by the Nth first data line and the 1st second data line to the pixel electrode, thus avoiding deviation of the actual charging voltage of the pixel electrode. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a proportional display driver circuit; Figure 2 This is a schematic diagram of a display driving circuit according to one embodiment; Figure 3 This is a schematic diagram of a display driving circuit according to another embodiment; Figure 4 This is a schematic diagram of a display driving circuit according to yet another embodiment; Figure 5 This is a schematic diagram of a display driving circuit according to another embodiment; Figure 6 This is a schematic diagram of a switching module according to one embodiment.

[0019] Explanation of reference numerals in the attached figures: 100 - Display driving circuit, 10 - Display unit, 11 - First display unit, S1 - First data line, 12 - Second display unit, S2 - Second data line, L - Adjustment line, 20 - Source driving module, 21 - First source driving module, 22 - Second source driving module, V1 - First signal, V2 - Second signal, 30 - Timing control module, V3 - Flip control signal, 40 - Switching module, T1 - First thin film transistor, T2 - Second thin film transistor, P - Pixel electrode, COM - Common electrode. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0022] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0023] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] Please refer to Figure 2 and Figure 3This invention provides a display driving circuit 100, including an adjustment line L, a first display unit 11 and a second display unit 12 arranged sequentially along a row direction, with the adjustment line L disposed between the first display unit 11 and the second display unit 12. The first display unit 11 includes 1 to N first data lines S1 arranged sequentially along a row direction, with any two adjacent first data lines S1 having opposite polarities. The second display unit 12 includes 1 to M second data lines S2 arranged sequentially along a row direction, with any two adjacent second data lines S2 having opposite polarities. Each first data line S1 and each second data line S2 is electrically connected to multiple pixel electrodes P, where N and M are both positive integers greater than or equal to 2. Specifically, when the polarity of the Nth first data line S1 is opposite to that of the 1st second data line S2, the adjustment line L is used to input the voltage of the common electrode COM. When the first display unit 11 or the second display unit 12 is used to perform polarity reversal so that the polarity of the Nth first data line S1 is the same as that of the first second data line S2, the adjustment line L is used to input a voltage with the same polarity as the (N-1)th first data line S1.

[0025] Among them, the row direction is Figures 2 to 5 The direction from left to right. Optionally, N can be either odd or even, without restriction. Optionally, N and M can be equal or unequal, without restriction. In this specific implementation, N and M are equal.

[0026] In this embodiment, please refer to Figure 2 and Figure 3 The pixel electrodes P between the Nth first data line S1 and the 1st second data line S2 are all pixel electrodes P connected to the Nth first data line S1, that is, the last column of pixel electrodes P of the first display unit 11. Optionally, in other embodiments, the pixel electrodes P between the Nth first data line S1 and the 1st second data line S2 may also be pixel electrodes P connected to the 1st second data line S2, that is, the first column of pixel electrodes P of the second display unit 12, without limitation.

[0027] For a detailed implementation, please refer to Figure 2 , Figure 2 This is a schematic diagram of the display driving circuit 100 in the first state. The display driving circuit 100 is in the first state when neither the first display unit 11 nor the second display unit 12 has performed a polarity reversal, or when either the first display unit 11 or the second display unit 12 has completed the polarity reversal process.

[0028] In this configuration, the polarities of the first data lines S1 (number 1 to N) are alternately reversed, the polarities of the second data lines S2 (number 1 to M) are alternately reversed, and the polarities of the Nth first data line S1 are opposite to those of the first second data line S2. The adjustment line L is used to input the voltage of the common electrode COM. At this time, the coupling voltages generated by the Nth first data line S1 and the first second data line S2 on the last column of pixel electrodes P of the first display unit 11 cancel each other out, making the actual charging voltage of this column of pixel electrodes P consistent with the actual charging voltages of other columns. Therefore, the adjustment line L inputs the same voltage as the common electrode COM to avoid affecting the normal charging of the pixel electrodes P.

[0029] For a detailed implementation, please refer to Figure 3 , Figure 3 This is a schematic diagram of the display driving circuit 100 in the second state. The display driving circuit 100 is in the second state when one of the first display unit 11 and the second display unit 12 has its polarity reversed and the other has not.

[0030] In this configuration, the polarities of the first data lines S1 (number 1 to N) are alternately opposite, and the polarities of the second data lines S2 (number 1 to M) are alternately opposite. The first data line S1 (number N) has the same polarity as the first second data line S2. An adjustment line L is used to input a voltage with the same polarity as the (N-1)th first data line S1. At this time, the first data line S1 (number N) and the first second data line S2 (number S2) generate coupling voltages in the same direction to the last column of pixel electrodes P of the first display unit 11. The coupling voltage generated by the adjustment line L to the pixel electrode P in this column is opposite in direction to the coupling voltage generated by the first data line S1 (number N) and the first second data line S2 (number S2) to the pixel electrode P, thus canceling each other out. This ensures that the actual charging voltage of the pixel electrode P in this column remains consistent with the actual charging voltage of other columns.

[0031] Please refer to Figure 1 , Figure 1 The diagram shows a comparative display driving circuit 100. In this comparative example, two adjacent source driving modules 20 drive multiple data lines to charge the pixel electrode P. In normal display mode, the polarity of the last data line connected to the preceding source driving module 20 is opposite to the polarity of the first data line connected to the following source driving module 20. At this time, the coupling voltage generated by the two data lines with opposite polarities to the pixel electrode P located between them is also in opposite directions, so it does not affect the actual charging voltage of the pixel electrode P. However, when one of the source driving modules 20 drives the multiple data lines connected to it to reverse polarity, the polarities of the two data lines will change from opposite to the same, thereby changing the coupling voltage generated to the pixel electrode P from reverse to same direction, which will affect the actual charging voltage of the pixel electrode P and cause display abnormalities.

[0032] The display driving circuit 100 provided by the present invention comprises an adjustment line L, a first display unit 11 and a second display unit 12 arranged sequentially along the row direction, and the adjustment line L being disposed between the first display unit 11 and the second display unit 12. The first display unit 11 includes 1 to N first data lines S1 arranged sequentially along the row direction, with any two adjacent first data lines S1 having opposite polarities. The second display unit 12 includes 1 to M second data lines S2 arranged sequentially along the row direction, with any two adjacent second data lines S2 having opposite polarities. Each first data line S1 and each second data line S2 is electrically connected to multiple pixel electrodes P, where N and M are both positive integers greater than or equal to 2. Specifically, when the Nth first data line S1 is connected to the first first data line S2... When the polarities of the two data lines S2 are opposite, the adjustment line L is used to input the voltage of the common electrode COM. When the first display unit 11 or the second display unit 12 is used to perform polarity reversal so that the polarities of the Nth first data line S1 and the 1st second data line S2 are the same, the adjustment line L is used to input a voltage with the same polarity as the (N-1)th first data line S1, so that the first display unit 11 or the second display unit 12 performs polarity reversal. When the polarities of the Nth first data line S1 and the 1st second data line S2 are the same, the coupling voltage generated by the adjustment line L on the pixel electrode P can cancel each other out with the coupling voltage generated by the Nth first data line S1 and the 1st second data line S2 on the pixel electrode P, thus avoiding deviation of the actual charging voltage of the pixel electrode P.

[0033] For a detailed implementation, please refer to Figure 2 and Figure 3 The display driving circuit 100 also includes a first source driving module 21 and a second source driving module 22. The first source driving module 21 is electrically connected to the adjustment line L and each first data line S1, and the second source driving module 22 is electrically connected to each second data line S2. The first source driving module 21 is used to input voltages of opposite polarity to any two adjacent first data lines S1. The first source driving module 21 is also used to control the voltage of the common electrode COM input to the adjustment line L or the voltage with the same polarity as the (N-1)th first data line S1. The second source driving module 22 is used to output voltages of opposite polarity to any two adjacent second data lines S2.

[0034] Specifically, when the display driving circuit 100 is in the first state, the first source driving module 21 inputs a first voltage to the Nth first data line S1 and controls the adjustment line L to input the same voltage as the common electrode COM. The second source driving module 22 inputs a second voltage to the first data line. The first voltage and the second voltage are the same in magnitude but opposite in polarity. When the display driving circuit 100 is in the second state, the first source driving module 21 inputs a first voltage to the Nth first data line S1 and a second voltage to the (N-1)th first data line S1, and also controls the adjustment line L to input the second voltage. The second source driving module 22 inputs a first voltage to the first data line. At this time, the second display unit 12 reverses its polarity. Alternatively, when the display driving circuit 100 is in the second state, the first source driving module 21 inputs a second voltage to the Nth first data line S1 and a first voltage to the (N-1)th first data line S1, and also controls the adjustment line L to input the first voltage. The second source driving module 22 inputs a second voltage to the first data line. At this time, the first display unit 11 reverses its polarity.

[0035] In this embodiment, the polarity of the first voltage is positive, as provided in the appendix of this invention. Figure 1 To be continued Figure 5 All are represented by "+", and the polarity of the second voltage is negative, as provided in the appendix of this invention. Figure 1 To be continued Figure 5 All characters are represented by "-".

[0036] By setting up a first source drive module 21 and a second source drive module 22, the first source drive module 21 is electrically connected to the adjustment line L and each first data line S1, and the second source drive module 22 is electrically connected to each second data line S2. The first source drive module 21 is used to input voltages of opposite polarity to any two adjacent first data lines S1. The first source drive module 21 is also used to control the voltage of the common electrode COM input to the adjustment line L or the voltage with the same polarity as the (N-1)th first data line S1. The second source drive module 22 is used to output voltages of opposite polarity to any two adjacent second data lines S2, so that the voltage change of the adjustment line L can be controlled by the first source drive module 21, simplifying the structure and control logic of the display drive circuit 100.

[0037] For a detailed implementation, please refer to Figures 2 to 5The display driving circuit 100 also includes a timing control module 30, which is electrically connected to both the first source driving module 21 and the second source driving module 22. The timing control module 30 is used to output a flip control signal V3 to the first source driving module 21 and the second source driving module 22. The first source driving module 21 is used to flip the polarity of each first data line S1 according to the flip control signal V3. The first source driving module 21 is also used to control the voltage of the common electrode COM of the adjustment line L or the voltage with the same polarity as the (N-1)th first data line S1 according to the flip control signal V3. Alternatively, the second source driving module 22 is used to flip the polarity of each second data line S2 according to the flip control signal V3.

[0038] In a specific embodiment, the display driving circuit 100 further includes a plurality of gate driving modules, which are arranged sequentially along the column direction and electrically connected to the timing control module 30. The plurality of gate driving modules are electrically connected to the multi-row pixel electrodes P one-to-one through their respective scan lines. The timing control module 30 is also used to output a flip control signal V3 to the gate driving modules.

[0039] Specifically, the flip control signal V3 includes a POL signal, an STV signal, and a CPV signal. The first source drive module 21 is used to control the voltage polarity output to the first data line S1 according to the POL signal, and the second source drive module 22 is used to control the voltage polarity output to the second data line S2 according to the POL signal. The gate drive module opens the switch between the pixel electrode P and the corresponding data line according to the STV signal and the CPV signal so that the voltage of the data line is written into the pixel electrode P.

[0040] By setting a timing control module 30, which is electrically connected to both the first source drive module 21 and the second source drive module 22, the timing control module 30 outputs a switching control signal V3 to the first source drive module 21 and the second source drive module 22. The first source drive module 21 is used to switch the polarity of each first data line S1 according to the switching control signal V3. The first source drive module 21 is also used to control the voltage of the common electrode COM of the adjustment line L or the voltage with the same polarity as the (N-1)th first data line S1 according to the switching control signal V3. Alternatively, the second source drive module 22 is used to switch the polarity of each second data line S2 according to the switching control signal V3, so that the voltage change of the adjustment line L can be jointly controlled by the first source drive module 21 and the timing control module 30, so that the voltage change of the adjustment line L is more accurate.

[0041] In one implementation method, please refer to Figure 2 and Figure 3The adjustment line L is directly electrically connected to the first source drive module 21. The first source drive module 21 is used to input the voltage of the common electrode COM or the voltage of the same polarity as the N-1th first data line S1 to the adjustment line L, so that the adjustment line L is directly controlled by the first source drive module 21, which further simplifies the circuit structure of the display drive circuit 100.

[0042] In another implementation method, please refer to Figure 4 The display driving circuit 100 also includes a switching module 40, which is electrically connected to the adjustment line L, the first source driving module 21, and the (N-1)th first data line S1. The switching module 40 is used to be electrically connected to the common electrode COM. The first source driving module 21 is used to output a first signal V1 and a second signal V2 to the switching module 40. The switching module 40 is used to connect the adjustment line L to the (N-1)th first data line S1 according to the first signal V1 and the second signal V2. Alternatively, the switching module 40 is used to connect the adjustment line L to the common electrode COM according to the first signal V1 and the second signal V2.

[0043] Specifically, when neither the first display unit 11 nor the second display unit 12 performs polarity reversal, the first signal V1 is at an inactive level and the second signal V2 is at an active level, so that the voltage of the common electrode COM input to the adjustment line L is adjusted.

[0044] When the first display unit 11 or the second display unit 12 reverses its polarity, the first signal V1 is at an active level and the second signal V2 is at an inactive level, so that the adjustment line L inputs a voltage with the same polarity as the (N-1)th first data line S1.

[0045] This configuration ensures that the voltage of the adjustment line L is highly consistent with the voltage of the common electrode COM or the voltage of the (N-1)th first data line S1, further improving the accuracy of voltage changes in the adjustment line L.

[0046] For a detailed implementation, please refer to Figures 2 to 5 The display driving circuit 100 includes multiple display units 10 and multiple source driving modules 20. The multiple display units 10 are arranged sequentially along the row direction. In two adjacent display units 10, the first display unit 10 in the row direction is configured as the first display unit 11, and the second display unit 10 is configured as the second display unit 12. The multiple source driving modules 20 are electrically connected to the multiple display units 10 in a one-to-one correspondence. The source driving module 20 electrically connected to the first display unit 11 is configured as the first source driving module 21, and the source driving module 20 electrically connected to the second display unit 12 is configured as the second source driving module 22. There are multiple adjustment lines L, and an adjustment line L is provided between any two adjacent display units 10.

[0047] In one implementation, please refer to Figure 2 and Figure 3 Multiple adjustment lines L are directly electrically connected to multiple first source drive modules 21 in a one-to-one correspondence. The first source drive module 21 is used to directly output the voltage of the common electrode COM to the corresponding adjustment line L or the same voltage as the N-1th first data line S1 of the first display unit 11.

[0048] In another implementation method, please refer to Figure 4 The display driving circuit 100 further includes a plurality of switching modules 40, which are electrically connected one-to-one with the plurality of adjustment lines L and the N-1th first data line S1 of the plurality of first display units 11, and are electrically connected one-to-one with the plurality of first source driving modules 21.

[0049] In any two adjacent display units 10, when neither of them performs polarity reversal, the adjustment line L located between the two display units 10 is connected to the common electrode COM under the control of the corresponding first source drive module 21 and switching module 40.

[0050] When any display unit 10 undergoes polarity reversal, the first display unit 10 located in front of that display unit 10 in the row direction is configured as the first display unit 11, and the N-1th first data line S1 of the first display unit 11 is connected to the corresponding adjustment line L under the control of the corresponding first source drive module 21 and switching module 40.

[0051] When two adjacent display units 10 are both polarity flipped, the two display units 10 located on both sides of the two display units 10 in the row direction are both configured as first display units 11, and the N-1th first data line S1 of the two first display units 11 is connected to the corresponding adjustment line L under the control of the corresponding first source drive module 21 and switching module 40.

[0052] By setting up multiple switching modules 40 and multiple first source drive modules 21 in a one-to-one correspondence, when each display unit 10 performs polarity reversal, the adjustment lines L located on both sides or one side of it can output the voltage of the common electrode COM or the same voltage as the N-1th first data line S1 of the first display unit 11 under the control of the corresponding first source drive module 21 and switching module 40, thus ensuring the stability of the operation of the display drive circuit 100.

[0053] In another implementation method, please refer to Figure 5The display driving circuit 100 further includes a plurality of switching modules 40, which are electrically connected one-to-one with a plurality of adjustment lines L and a plurality of first data lines S1 of the first display units 11, and at least two of the switching modules 40 are electrically connected to the same first source driving module 21.

[0054] Specifically, when one or both of the adjacent display units 10 undergo polarity reversal, one or more corresponding adjustment lines L need to output the same voltage as the (N-1)th first data line S1 of the corresponding first display unit 11. At this time, the voltage change of the adjustment line L can be controlled by the corresponding first source drive module 21 in conjunction with the corresponding switching module 40 according to the reversal control signal V3 output by the aforementioned timing control module 30, so as to reduce the line connection of the display drive circuit 100 and save in-plane space.

[0055] For a detailed implementation, please refer to Figure 6 The switching module 40 includes a first thin-film transistor T1 and a second thin-film transistor T2. The drains of the first thin-film transistor T1 and the second thin-film transistor T2 are both electrically connected to the adjustment line L. The gates of the first thin-film transistor T1 and the second thin-film transistor T2 are both electrically connected to the first source driving module 21. The source of the first thin-film transistor T1 is electrically connected to the (N-1)th first data line S1. The source of the second thin-film transistor T2 is used to be electrically connected to the common electrode COM.

[0056] Specifically, when the first signal V1 is inactive and the second signal V2 is active, the first thin-film transistor T1 is off and the second thin-film transistor T2 is on, making the adjustment line L connected to the common electrode COM and disconnected from the (N-1)th first data line S1, so that the adjustment line L receives the voltage of the common electrode COM. When the first signal V1 is active and the second signal V2 is inactive, the first thin-film transistor T1 is on and the second thin-film transistor T2 is off, making the adjustment line L connected to the (N-1)th first data line S1 and disconnected from the common electrode COM, so that the adjustment line L receives the same voltage as the (N-1)th first data line S1.

[0057] By configuring the switching module 40 to include a first thin-film transistor T1 and a second thin-film transistor T2, the drains of the first thin-film transistor T1 and the second thin-film transistor T2 are both electrically connected to the adjustment line L, the gates of the first thin-film transistor T1 and the second thin-film transistor T2 are both electrically connected to the first source drive module 21, the source of the first thin-film transistor T1 is electrically connected to the (N-1)th first data line S1, and the source of the second thin-film transistor T2 is used to be electrically connected to the common electrode COM, making the switching module 40 simple in structure and stable in operation, which is beneficial to improving the accuracy and reliability of voltage changes in the adjustment line L.

[0058] The present invention also provides a display panel, including a pixel array and a display driving circuit 100 as described in the embodiments of the present invention. The pixel array includes a common electrode COM and a plurality of pixel electrodes P arranged in an array. Each first data line S1 and each second data line S2 are electrically connected to a plurality of pixel electrodes P. The display panel provided by the present invention, by setting the pixel array and the display driving circuit 100 as described in the embodiments of the present invention, wherein the pixel array includes a common electrode COM and a plurality of pixel electrodes P arranged in an array, and each first data line S1 and each second data line S2 are electrically connected to a plurality of pixel electrodes P, ensures that the actual charging amount of the pixel electrodes P does not shift when the polarity of the pixel electrodes P is flipped, thereby avoiding phenomena such as abnormal vertical lines in the displayed image.

[0059] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0060] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A display driving circuit, characterized in that, include: A first display unit and a second display unit are arranged sequentially along the row direction. The first display unit includes 1 to N first data lines arranged sequentially along the row direction, and the polarities of any two adjacent first data lines are opposite. The second display unit includes 1 to M second data lines arranged sequentially along the row direction, and the polarities of any two adjacent second data lines are opposite. Each first data line and each second data line are electrically connected to multiple pixel electrodes, and N and M are both positive integers greater than or equal to 2. An adjustment line is disposed between the first display unit and the second display unit; Specifically, when the polarity of the Nth first data line is opposite to that of the 1st second data line, the adjustment line is used to input the voltage of the common electrode; when the first display unit or the second display unit is used to perform polarity reversal so that the polarity of the Nth first data line is the same as that of the 1st second data line, the adjustment line is used to input a voltage with the same polarity as the (N-1)th first data line.

2. The display driving circuit according to claim 1, characterized in that, The display driving circuit further includes a first source driving module and a second source driving module. The first source driving module is electrically connected to the adjustment line and each of the first data lines, and the second source driving module is electrically connected to each of the second data lines. The first source drive module is used to input voltages of opposite polarity to any two adjacent first data lines. The first source drive module is also used to control the voltage of the common electrode of the adjustment line input or the voltage of the same polarity as the (N-1)th first data line. The second source drive module is used to output voltages of opposite polarity to any two adjacent second data lines.

3. The display driving circuit according to claim 2, characterized in that, The adjustment line is directly electrically connected to the first source drive module, which is used to input the voltage of the common electrode or the voltage with the same polarity as the (N-1)th first data line to the adjustment line.

4. The display driving circuit according to claim 2, characterized in that, The display driving circuit further includes a switching module, which is electrically connected to the adjustment line, the first source driving module, and the (N-1)th first data line. The switching module is used to be electrically connected to the common electrode. Wherein, the first source drive module is used to output a first signal and a second signal to the switching module, and the switching module is used to connect the adjustment line to the (N-1)th first data line according to the first signal and the second signal, or the switching module is used to connect the adjustment line to the common electrode according to the first signal and the second signal.

5. The display driving circuit according to claim 4, characterized in that, The switching module includes a first thin-film transistor and a second thin-film transistor. The drains of the first and second thin-film transistors are both electrically connected to the adjustment line. The gates of the first and second thin-film transistors are both electrically connected to the first source driving module. The source of the first thin-film transistor is electrically connected to the (N-1)th first data line. The source of the second thin-film transistor is used to be electrically connected to the common electrode.

6. The display driving circuit according to claim 2, characterized in that, The display driving circuit further includes a timing control module, which is electrically connected to both the first source driving module and the second source driving module. The timing control module is used to output a switching control signal to the first source drive module and the second source drive module. The first source drive module is used to switch the polarity of each first data line according to the switching control signal. The first source drive module is also used to control the voltage of the common electrode of the adjustment line input or the voltage with the same polarity as the (N-1)th first data line according to the switching control signal. Alternatively, the second source drive module is used to switch the polarity of each second data line according to the switching control signal.

7. The display driving circuit according to any one of claims 1-6, characterized in that, The display driving circuit includes multiple display units and multiple source driving modules. The multiple display units are arranged sequentially along the row direction. In two adjacent display units, the first display unit in the row direction is configured as the first display unit, and the second display unit is configured as the second display unit. The plurality of source driving modules are electrically connected to the plurality of display units in a one-to-one correspondence. The source driving module electrically connected to the first display unit is configured as the first source driving module, and the source driving module electrically connected to the second display unit is configured as the second source driving module. There are multiple adjustment lines, with one adjustment line provided between any two adjacent display units.

8. The display driving circuit according to claim 7, characterized in that, The multiple adjustment lines are directly electrically connected to each of the multiple first source drive modules.

9. The display driving circuit according to claim 7, characterized in that, The display driving circuit further includes multiple switching modules, and the multiple switching modules are electrically connected one-to-one with the multiple adjustment lines and the N-1th first data line of the multiple first display units; The multiple switching modules are electrically connected to the multiple first source drive modules in a one-to-one correspondence, or at least two of the switching modules are electrically connected to the same first source drive module.

10. A display panel, characterized in that, The device includes a pixel array and a display driving circuit as described in any one of claims 1-9, wherein the pixel array includes a common electrode and a plurality of pixel electrodes arranged in an array, and each of the first data lines and each of the second data lines is electrically connected to the plurality of pixel electrodes.

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