Display driving circuit and display panel

Abstract

A display driving circuit and a display panel, the display driving circuit comprises a first display unit and a second display unit arranged in sequence along a row direction, an adjusting line arranged between the first display unit and the second display unit, the first display unit comprises the first to Nth first data lines arranged in sequence along the row direction and polarities of the first to Nth first data lines are opposite in sequence, the second display unit comprises the first to Mth second data lines arranged in sequence along the row direction and polarities of the first to Mth second data lines are opposite in sequence, each first data line and each second data line are electrically connected with a plurality of pixel electrodes, when polarities of the Nth first data line and the first second data line are opposite, the adjusting line is used for inputting a voltage of a common electrode, when the first display unit or the second display unit is used for polarity inversion, so that polarities of the Nth first data line and the first second data line are the same, the adjusting line is used for inputting a voltage same as that of the Nth-1 first data line, so that deviation of actual charging voltage of the pixel electrode is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panel, and particularly relates to a display driving circuit and a display panel. BACKGROUND

[0002] With the rapid development of display technology, the market demand for high-resolution, high refresh rate and narrow frame display panels is increasing. To meet this demand, existing high-resolution display panels usually adopt multiple source driving chips (Source Driver IC) to work together in a multi-channel driving manner after being packaged by chip on film (Chip On Film, COF) to drive a large number of data lines on the panel. Each source driving chip is responsible for driving hundreds of data lines, thereby achieving the driving of the pixel array.

[0003] In a liquid crystal display panel, in order to prevent polarization of liquid crystal molecules, a polarity inversion driving technology is generally used to reverse the polarity of multiple data lines driven by a source driving chip. However, when two adjacent source driving chips perform independent polarity reversal, the last data line driven by the former source driving chip and the first data line driven by the latter source driving chip have the same voltage polarity.

[0004] Due to the existence of inherent parasitic capacitance (Cpd and Cpd') between the data line and the pixel electrode, when the polarities of the two adjacent data lines are the same, the pixel electrode located between the two adjacent data lines is coupled with two feedthrough voltages in the same direction, the coupling voltage of the pixel electrode is superimposed and enhanced, thereby causing the actual charging voltage of the pixel electrode to deviate. SUMMARY

[0005] The purpose of the present application is to provide a display driving circuit and a display panel, which 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 purpose of the present application, the present application provides the following technical solutions:

[0007] In a first aspect, the present application provides a display driving circuit, comprising: a first display unit and a second display unit arranged in sequence along a row direction, the first display unit comprising a first to Nth first data line arranged in sequence along the row direction, the polarity of any two adjacent first data lines being opposite, the second display unit comprising a first to Mth second data line arranged in sequence along the row direction, the polarity of any two adjacent second data lines being opposite, each first data line and each second data line being electrically connected to a plurality of pixel electrodes, N and M being positive integers greater than or equal to 2; an adjusting line arranged between the first display unit and the second display unit; wherein when the polarity of the Nth first data line and the first second data line is opposite, the adjusting 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 inversion, so that the polarity of the Nth first data line and the first second data line is the same, the adjusting line is used to input a voltage of the same polarity as the N-1th first data line.

[0008] In an embodiment, the display driving circuit further comprises a first source driving module and a second source driving module, the first source driving module being electrically connected to the adjusting line and each first data line, the second source driving module being electrically connected to each second data line; wherein the first source driving module is used to input a voltage of opposite polarity to any two adjacent first data lines respectively, the first source driving module is further used to control the adjusting line to input a voltage of a common electrode or a voltage of the same polarity as the N-1th first data line, and the second source driving module is used to output a voltage of opposite polarity to any two adjacent second data lines respectively.

[0009] In an embodiment, the adjusting line is directly electrically connected to the first source driving module, and the first source driving module is used to input a voltage of a common electrode or a voltage of the same polarity as the N-1th first data line to the adjusting line.

[0010] In an embodiment, the display driving circuit further comprises a switching module, the switching module being electrically connected to the adjusting line, the first source driving module, and the N-1th first data line, and the switching module is used to be electrically connected to a common electrode; wherein the first source driving module is used to output a first signal and a second signal to the switching module, and the switching module is used to communicate the adjusting line and the N-1th first data line according to the first signal and the second signal, or the switching module is used to communicate the adjusting line and the common electrode according to the first signal and the second signal.

[0011] In an embodiment, the switching module comprises a first thin film transistor and a second thin film transistor, the drain of the first thin film transistor and the drain of the second thin film transistor are electrically connected to the adjusting line, the gate of the first thin film transistor and the gate of the second thin film transistor are electrically connected to the first source driving module, the source of the first thin film transistor is electrically connected to the N-1th first data line, and the source of the second thin film transistor is configured to be electrically connected to the common electrode.

[0012] In an embodiment, the display driving circuit further comprises a timing control module, the timing control module is electrically connected to the first source driving module and the second source driving module; wherein the timing control module is configured to output a flip control signal to the first source driving module and the second source driving module, the first source driving module is configured to flip the polarity of each first data line according to the flip control signal, and the first source driving module is further configured to control the adjusting line to input a voltage of the common electrode or a voltage with the same polarity as the N-1th first data line according to the flip control signal, or the second source driving module is configured to flip the polarity of each second data line according to the flip control signal.

[0013] In an embodiment, the display driving circuit comprises a plurality of display units and a plurality of source driving modules, the plurality of display units are arranged in sequence along a row direction, in adjacent two display units, a former display unit in the row direction is configured as the first display unit, and a latter display unit is configured as the second display unit; the plurality of source driving modules are electrically connected to the plurality of display units one by one, 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; the adjusting line is a plurality of adjusting lines, and one adjusting line is arranged between any adjacent two display units.

[0014] In an embodiment, the plurality of adjusting lines are directly electrically connected to the plurality of first source driving modules one by one.

[0015] In an embodiment, the display driving circuit further comprises a plurality of switching modules, the plurality of switching modules are electrically connected to the plurality of adjusting lines and the N-1th first data line of the plurality of first display units one by one, and the plurality of switching modules are electrically connected to the plurality of first source driving modules one by one, or at least two switching modules are electrically connected to the same first source driving module.

[0016] In a second aspect, the present application provides a display panel comprising a pixel array and the display driving circuit according to any one of the embodiments of the first aspect, wherein the pixel array comprises a common electrode and a plurality of arrayed pixel electrodes, each of the first data lines and each of the second data lines is electrically connected with a plurality of the pixel electrodes.

[0017] The display driving circuit provided by the present application comprises an adjusting line, a first display unit and a second display unit arranged in sequence along a row direction, the adjusting line is arranged between the first display unit and the second display unit, the first display unit comprises a first display line 1 to a first display line N arranged in sequence along the row direction, the polarities of any two adjacent first display lines are opposite, the second display unit comprises a second display line 1 to a second display line M arranged in sequence along the row direction, the polarities of any two adjacent second display lines are opposite, each of the first display lines and each of the second display lines is electrically connected with a plurality of pixel electrodes, N and M are positive integers greater than or equal to 2, wherein when the polarity of the Nth first display line is opposite to that of the first second display line, the adjusting line is used for inputting a voltage of a common electrode, when the first display unit or the second display unit is used for polarity inversion, so that the polarity of the Nth first display line is the same as that of the first second display line, the adjusting line is used for inputting a voltage with the same polarity as that of the N-1th first display line, so that the first display unit or the second display unit is subjected to polarity inversion, and when the polarity of the Nth first display line is the same as that of the first second display line, the coupling voltage generated by the adjusting line on the pixel electrode can be offset by the coupling voltage generated by the Nth first display line and the first second display line on the pixel electrode, so that the actual charging voltage of the pixel electrode is prevented from deviating. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0019] Figure 1 is a schematic diagram of a display driving circuit of a comparative example;

[0020] Figure 2 is a schematic diagram of a display driving circuit of an embodiment;

[0021] Figure 3 is a schematic diagram of a display driving circuit of another embodiment;

[0022] Figure 4 is a schematic diagram of a display driving circuit of still another embodiment;

[0023] Figure 5 is a schematic diagram of a display driving circuit of another embodiment;

[0024] Figure 6 is a schematic diagram of a switching module of an embodiment.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 100 - display driving circuit, 10 - display unit, 11 - first display unit, S1 - first data line, 12 - second display unit, S2 - second data line, L - adjusting 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 DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be an intervening component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be an intervening component.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0030] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features of the embodiments can be combined with each other without conflict.

[0031] Reference should be made to Figure 2 and Figure 3The application provides a display driving circuit 100, which comprises an adjusting line L, a first display unit 11 and a second display unit 12 arranged in sequence along a row direction, and the adjusting line L is arranged between the first display unit 11 and the second display unit 12. The first display unit 11 comprises the first to Nth first data lines S1 arranged in sequence along the row direction, the polarities of any two adjacent first data lines S1 are opposite, the second display unit 12 comprises the first to Mth second data lines S2 arranged in sequence along the row direction, the polarities of any two adjacent second data lines S2 are opposite, each first data line S1 and each second data line S2 are electrically connected with a plurality of pixel electrodes P, N and M are positive integers greater than or equal to 2. When the polarity of the Nth first data line S1 is opposite to that of the first second data line S2, the adjusting line L is used for inputting the voltage of a common electrode COM. When the first display unit 11 or the second display unit 12 is used for polarity inversion, so that the polarity of the Nth first data line S1 is the same as that of the first second data line S2, the adjusting line L is used for inputting the voltage with the same polarity as that of the N-1th first data line S1.

[0032] The row direction is the direction from left to right. Figures 2 to 5 The row direction is the direction from left to right. Optionally, N can be an odd number or an even number, and is not limited. Optionally, N and M can be equal or not equal, and are not limited. In the specific embodiment, N and M are equal.

[0033] In the embodiment, refer to Figure 2 and Figure 3 The pixel electrodes P between the Nth first data line S1 and the first second data line S2 are all the 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 first second data line S2 can also be all the pixel electrodes P connected to the first second data line S2, that is, the first column of pixel electrodes P of the second display unit 12, and is not limited.

[0034] In the specific embodiment, refer to Figure 2 , Figure 2 The figure is a schematic view of the display driving circuit 100 in the first state. When the first display unit 11 and the second display unit 12 do not perform polarity inversion, or when the first display unit 11 or the second display unit 12 has completed the polarity inversion process, the display driving circuit 100 is in the first state.

[0035] The polarity of the first data lines S1 from 1 to N is opposite in turn, the polarity of the second data lines S2 from 1 to M is opposite in turn, the polarity of the Nth first data line S1 and the first second data line S2 is opposite, and the adjusting line L is used for inputting 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 to the last column of pixel electrodes P of the first display unit 11 are opposite to each other, so that the actual charging voltage of the column of pixel electrodes P is consistent with the actual charging voltage of other columns. Therefore, the adjusting line L inputs the same voltage as the common electrode COM to avoid affecting the normal charging of the pixel electrodes P.

[0036] In the specific embodiments, please refer to Figure 3 , Figure 3 is a schematic view of the display driving circuit 100 in the second state. When one of the first display unit 11 and the second display unit 12 is polarity-inverted and the other is not, the display driving circuit 100 is in the second state.

[0037] The polarity of the first data lines S1 from 1 to N is opposite in turn, the polarity of the second data lines S2 from 1 to M is opposite in turn, the polarity of the Nth first data line S1 and the first second data line S2 is the same, and the adjusting line L is used for inputting the voltage of the N-1th first data line S1. At this time, the Nth first data line S1 and the first second data line S2 generate coupling voltages of the same direction to the last column of pixel electrodes P of the first display unit 11, and the coupling voltage generated by the adjusting line L to the column of pixel electrodes P is opposite to the coupling voltage generated by the Nth first data line S1 and the first second data line S2 to the pixel electrodes P, so as to offset each other, so that the actual charging voltage of the column of pixel electrodes P is consistent with the actual charging voltage of other columns.

[0038] Please refer to Figure 1 , Figure 1 is a schematic view of a display driving circuit 100 of a comparative example, in which two adjacent source driving modules 20 drive a plurality of data lines to charge the pixel electrodes P. In a normal display state, the polarity of the last data line connected to the first source driving module 20 is opposite to the polarity of the first data line connected to the second source driving module 20. At this time, the coupling voltages generated by the two data lines with opposite polarities to the pixel electrodes P between them are also opposite in direction, so as not to affect the actual charging voltage of the pixel electrodes P. However, when one of the source driving modules 20 drives the plurality of data lines connected thereto to perform polarity inversion, the polarity of the two data lines will change from opposite to the same, so that the coupling voltages generated by the pixel electrodes P will change from opposite to the same, thereby affecting the actual charging voltage of the pixel electrodes P and causing display abnormalities.

[0039] The display driving circuit 100 provided by the present application comprises an adjusting line L, a first display unit 11 and a second display unit 12 arranged in sequence along a row direction, the adjusting line L is arranged between the first display unit 11 and the second display unit 12, the first display unit 11 comprises a first data line S1 to an Nth data line S1 arranged in sequence along the row direction, the polarities of any two adjacent first data lines S1 are opposite, the second display unit 12 comprises a first data line S2 to an Mth data line S2 arranged in sequence along the row direction, the polarities of any two adjacent second data lines S2 are opposite, each first data line S1 and each second data line S2 are electrically connected with a plurality of pixel electrodes P, N and M are positive integers greater than or equal to 2, wherein when the polarity of the Nth first data line S1 is opposite to that of the first second data line S2, the adjusting 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 inversion, so that the polarity of the Nth first data line S1 is the same as that of the first second data line S2, the adjusting line L is used to input the voltage with the same polarity as that of the N-1th first data line S1, so that the first display unit 11 or the second display unit 12 performs polarity inversion, and the polarity of the Nth first data line S1 is the same as that of the first second data line S2, the coupling voltage generated by the adjusting line L on the pixel electrode P can be offset by the coupling voltage generated by the Nth first data line S1 and the first second data line S2 on the pixel electrode P, so as to avoid the deviation of the actual charging voltage of the pixel electrode P.

[0040] In the specific embodiment, please refer to Figure 2 and Figure 3 The display driving circuit 100 further comprises a first source driving module 21 and a second source driving module 22, the first source driving module 21 is electrically connected with the adjusting line L and each first data line S1, the second source driving module 22 is electrically connected with each second data line S2, wherein the first source driving module 21 is used to input the voltage with opposite polarities to any two adjacent first data lines S1 respectively, the first source driving module 21 is further used to control the adjusting line L to input the voltage of the common electrode COM or the voltage with the same polarity as that of the N-1th first data line S1, and the second source driving module 22 is used to output the voltage with opposite polarities to any two adjacent second data lines S2 respectively.

[0041] 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 adjusting line L to input the same voltage as the common electrode COM, and the second source driving module 22 inputs a second voltage to the first data line S1, the first voltage and the second voltage are the same in size and opposite in polarity. When the display driving circuit 100 is in the second state, the first source driving module 21 inputs the first voltage to the Nth first data line S1 and inputs the second voltage to the N-1th first data line S1, and also controls the adjusting line L to input the second voltage, and the second source driving module 22 inputs the first voltage to the first data line S1, at this time, the second display unit 12 performs polarity inversion. Alternatively, when the display driving circuit 100 is in the second state, the first source driving module 21 inputs the second voltage to the Nth first data line S1 and inputs the first voltage to the N-1th first data line S1, and also controls the adjusting line L to input the first voltage, and the second source driving module 22 inputs the second voltage to the first data line S1, at this time, the first display unit 11 performs polarity inversion.

[0042] In the embodiment, the polarity of the first voltage is positive, and the polarity of the second voltage is negative. Figure 1 Figure 5 In the embodiment, the polarity of the first voltage is positive, and the polarity of the second voltage is negative. Figure 1 Figure 5 In the embodiment, the polarity of the first voltage is positive, and the polarity of the second voltage is negative.

[0043] By setting the first source driving module 21 and the second source driving module 22, the first source driving module 21 is electrically connected with the adjusting line L and each first data line S1, and the second source driving module 22 is electrically connected with each second data line S2, wherein the first source driving module 21 is configured to input voltages of opposite polarities to any two adjacent first data lines S1 respectively, and the first source driving module 21 is also configured to control the adjusting line L to input a voltage of the common electrode COM or a voltage of the same polarity as the N-1th first data line S1, and the second source driving module 22 is configured to output voltages of opposite polarities to any two adjacent second data lines S2 respectively, so that the voltage change of the adjusting line L can be controlled by the first source driving module 21, and the structure and control logic of the display driving circuit 100 are simplified.

[0044] In the detailed description, please refer to Figures 2 to 5 ​​The display driving circuit 100 further comprises a timing control module 30 electrically connected with the first source driving module 21 and the second source driving module 22, wherein the timing control module 30 is configured 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 configured to flip the polarity of each first data line S1 according to the flip control signal V3, and the first source driving module 21 is further configured to control the voltage of the adjusting line L input to the common electrode COM or the voltage with the same polarity as the N-1th first data line S1 according to the flip control signal V3, or the second source driving module 22 is configured to flip the polarity of each second data line S2 according to the flip control signal V3.

[0045] In the specific embodiment, the display driving circuit 100 further comprises a plurality of gate driving modules arranged in sequence along the column direction and electrically connected with the timing control module 30, the plurality of gate driving modules are electrically connected with the plurality of pixel electrodes P one by one through respective scan lines, and the timing control module 30 is further configured to output the flip control signal V3 to the gate driving modules.

[0046] Specifically, the flip control signal V3 comprises a POL signal, an STV signal and a CPV signal, wherein the first source driving module 21 is configured to control the polarity of the voltage output to the first data line S1 according to the POL signal, the second source driving module 22 is configured to control the polarity of the voltage output to the second data line S2 according to the POL signal, and the gate driving module is configured to open the switch between the pixel electrode P and the corresponding data line according to the STV signal and the CPV signal to write the voltage of the data line into the pixel electrode P.

[0047] By arranging the timing control module 30 electrically connected with the first source driving module 21 and the second source driving module 22, wherein the timing control module 30 is configured to output the 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 configured to flip the polarity of each first data line S1 according to the flip control signal V3, the first source driving module 21 is further configured to control the voltage of the adjusting line L input to the common electrode COM or the voltage with the same polarity as the N-1th first data line S1 according to the flip control signal V3, or the second source driving module 22 is configured to flip the polarity of each second data line S2 according to the flip control signal V3, so that the voltage change of the adjusting line L can be controlled by the first source driving module 21 and the timing control module 30 together, to make the voltage change of the adjusting line L more accurate.

[0048] In one embodiment, please refer to Figure 2 and Figure 3The adjusting line L is directly electrically connected with the first source driving module 21, and the first source driving module 21 is configured to input a voltage of the common electrode COM or a voltage of the N-1th first data line S1 with the same polarity to the adjusting line L, so that the adjusting line L is directly controlled by the first source driving module 21, and the circuit structure of the display driving circuit 100 is further simplified.

[0049] In another embodiment, referring to Figure 4 The display driving circuit 100 further comprises a switching module 40, which is electrically connected with the adjusting line L, the first source driving module 21 and the N-1th first data line S1, and is electrically connected with the common electrode COM. The first source driving module 21 is configured to output a first signal V1 and a second signal V2 to the switching module 40, and the switching module 40 is configured to communicate the adjusting line L with the N-1th first data line S1 or the common electrode COM according to the first signal V1 and the second signal V2.

[0050] Specifically, when neither the first display unit 11 nor the second display unit 12 performs polarity inversion, the first signal V1 is a non-effective level, and the second signal V2 is an effective level, so that the adjusting line L inputs the voltage of the common electrode COM.

[0051] When the first display unit 11 or the second display unit 12 performs polarity inversion, the first signal V1 is an effective level, and the second signal V2 is a non-effective level, so that the adjusting line L inputs the voltage with the same polarity as the N-1th first data line S1.

[0052] In this way, the voltage of the adjusting line L is highly consistent with the voltage of the common electrode COM or the voltage of the N-1th first data line S1, and the accuracy of the voltage change of the adjusting line L is further improved.

[0053] In the specific embodiment, referring to Figures 2 to 5 The display driving circuit 100 comprises a plurality of display units 10 and a plurality of source driving modules 20. The plurality of display units 10 are arranged in sequence along a row direction. In adjacent two display units 10, a former display unit 10 in the row direction is configured as a first display unit 11, and a latter display unit 10 is configured as a second display unit 12. The plurality of source driving modules 20 are electrically connected with the plurality of display units 10 in one-to-one correspondence. The source driving module 20 electrically connected with the first display unit 11 is configured as a first source driving module 21, and the source driving module 20 electrically connected with the second display unit 12 is configured as a second source driving module 22. The adjusting line L is in plurality, and one adjusting line L is arranged between any adjacent two display units 10.

[0054] In one embodiment, referring to Figure 2 and Figure 3 The plurality of adjustment lines L are directly connected with the plurality of first source driving modules 21 one by one, and the first source driving modules 21 are used to directly 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 to the corresponding adjustment line L.

[0055] In another embodiment, referring to Figure 4 The display driving circuit 100 further comprises a plurality of switching modules 40, the plurality of switching modules 40 are connected with the plurality of adjustment lines L and the N-1th first data line S1 of the plurality of first display units 11 one by one, and the plurality of switching modules 40 are connected with the plurality of first source driving modules 21 one by one.

[0056] In any two adjacent display units 10, when neither of them performs polarity inversion, the adjustment lines L between the two display units 10 are connected with the common electrode COM under the control of the corresponding first source driving modules 21 and switching modules 40.

[0057] When any one of the display units 10 performs polarity inversion, the first display unit 11 is configured in the first display unit 11 in front of the display unit 10 in the row direction, and the N-1th first data line S1 of the first display unit 11 is connected with the corresponding adjustment line L under the control of the corresponding first source driving module 21 and switching module 40.

[0058] When the two adjacent display units 10 both perform polarity inversion, the two display units 10 respectively located on both sides of the two display units 10 in the row direction are both configured as the first display unit 11, and the N-1th first data line S1 of the two first display units 11 is connected with the corresponding adjustment line L under the control of the corresponding first source driving module 21 and switching module 40.

[0059] By connecting the plurality of switching modules 40 with the plurality of first source driving modules 21 one by one, when each display unit 10 performs polarity inversion, the adjustment lines L located on both sides or one side of the display unit 10 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 driving module 21 and switching module 40, which ensures the stability of the operation of the display driving circuit 100.

[0060] In another embodiment, referring to Figure 5The display driving circuit 100 further comprises a plurality of switching modules 40, each of the plurality of switching modules 40 is electrically connected to one of the plurality of adjustment lines L and one of the N-1 first data lines S1 of the plurality of first display units 11, and at least two of the switching modules 40 are electrically connected to the same first source driving module 21.

[0061] Specifically, when one or both of the adjacent two display units 10 performs polarity inversion, one or more corresponding adjustment lines L need to output the same voltage as the N-1 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 driving module 21 according to the inversion control signal V3 output by the aforementioned timing control module 30 in cooperation with the corresponding switching module 40, so as to reduce the line connection of the display driving circuit 100 and save the in-plane space.

[0062] In the specific embodiment, please refer to Figure 6 The switching module 40 comprises a first thin film transistor T1 and a second thin film transistor T2, the drain of the first thin film transistor T1 and the drain of the second thin film transistor T2 are electrically connected to the adjustment line L, the gate of the first thin film transistor T1 and the gate of the second thin film transistor T2 are 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 first data line S1, and the source of the second thin film transistor T2 is electrically connected to the common electrode COM.

[0063] When the first signal V1 is a non-effective level and the second signal V2 is an effective level, the first thin film transistor T1 is closed and the second thin film transistor T2 is opened, so that the adjustment line L is connected to the common electrode COM and disconnected from the N-1 first data line S1, so that the voltage of the adjustment line L input by the common electrode COM. When the first signal V1 is an effective level and the second signal V2 is a non-effective level, the first thin film transistor T1 is opened and the second thin film transistor T2 is closed, so that the adjustment line L is connected to the N-1 first data line S1 and disconnected from the common electrode COM, so that the adjustment line L inputs the same voltage as the N-1 first data line S1.

[0064] By setting the switching module 40 to comprise a first thin film transistor T1 and a second thin film transistor T2, the drain of the first thin film transistor T1 and the drain of the second thin film transistor T2 are electrically connected to the adjustment line L, the gate of the first thin film transistor T1 and the gate of the second thin film transistor T2 are 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 first data line S1, and the source of the second thin film transistor T2 is electrically connected to the common electrode COM, so that the structure of the switching module 40 is simple and stable, which is beneficial to improve the accuracy and reliability of the voltage change of the adjustment line L.

[0065] The application further provides a display panel, comprising a pixel array and the display driving circuit 100 in the embodiment of the application, the pixel array comprising a common electrode COM and a plurality of arrayed pixel electrodes P, each first data line S1 and each second data line S2 being electrically connected with a plurality of pixel electrodes P. The display panel provided by the application, by arranging the pixel array and the display driving circuit 100 in the embodiment of the application, the pixel array comprising a common electrode COM and a plurality of arrayed pixel electrodes P, each first data line S1 and each second data line S2 being electrically connected with a plurality of pixel electrodes P, so that the actual charging amount of the pixel electrode P is not offset when the polarity of the pixel electrode P is reversed, thereby avoiding the phenomenon of abnormal vertical lines in the output of the display picture.

[0066] In the description of the embodiments of the present application, it should be noted that the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like refer to the orientation or positional relationship based on the drawings described, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0067] The above only discloses a preferred embodiment of the present application, of course, cannot limit the scope of the present application, those skilled in the art can understand that the implementation of all or part of the above-mentioned processes, and the equivalent changes made according to the claims of the present application, still belong to the scope covered by the present application.

Claims

1. A display drive circuit, characterized by comprising: The display driving circuit comprises: a first display unit and a second display unit arranged in sequence along a row direction, the first display unit comprising a first to Nth first data line arranged in sequence along the row direction, the polarity of any two adjacent first data lines being opposite, the second display unit comprising a first to Mth second data line arranged in sequence along the row direction, the polarity of any two adjacent second data lines being opposite, each first data line and each second data line being electrically connected with a plurality of pixel electrodes, N and M each being a positive integer greater than or equal to 2; an adjusting line arranged between the first display unit and the second display unit; wherein, when the polarity of the Nth first data line and the first second data line is opposite, the adjusting line is used for inputting a voltage of a common electrode; when the first display unit or the second display unit is used for polarity inversion, so that the polarity of the Nth first data line and the first second data line is the same, the adjusting line is used for inputting a voltage of the same polarity as the N-1th first data line.

2. The display driving circuit according to claim 1, wherein The display driving circuit further comprises a first source driving module and a second source driving module, the first source driving module being electrically connected with the adjusting line and each first data line, the second source driving module being electrically connected with each second data line; wherein, the first source driving module is used for inputting a voltage of opposite polarity to any two adjacent first data lines respectively, the first source driving module is further used for controlling the adjusting line to input a voltage of a common electrode or a voltage of the same polarity as the N-1th first data line, and the second source driving module is used for outputting a voltage of opposite polarity to any two adjacent second data lines respectively.

3. The display driving circuit according to claim 2, wherein The adjusting line is directly electrically connected with the first source driving module, and the first source driving module is used for inputting a voltage of a common electrode or a voltage of the same polarity as the N-1th first data line to the adjusting line.

4. The display driving circuit according to claim 2, wherein The display driving circuit further comprises a switching module, the switching module being electrically connected with the adjusting line, the first source driving module and the N-1th first data line, and the switching module being used for being electrically connected with a common electrode; wherein, the first source driving module is used for outputting a first signal and a second signal to the switching module, and the switching module is used for connecting the adjusting line and the N-1th first data line in communication according to the first signal and the second signal, or the switching module is used for connecting the adjusting line and the common electrode in communication according to the first signal and the second signal.

5. The display driving circuit according to claim 4, wherein The switching module comprises a first thin film transistor and a second thin film transistor, the drain of the first thin film transistor and the drain of the second thin film transistor each being electrically connected with the adjusting line, the gate of the first thin film transistor and the gate of the second thin film transistor each being electrically connected with the first source driving module, the source of the first thin film transistor being electrically connected with the N-1th first data line, and the source of the second thin film transistor being used for being electrically connected with the common electrode.

6. The display driving circuit according to claim 2, wherein The display driving circuit further comprises a timing control module, which is electrically connected with the first source driving module and the second source driving module; The timing control module is configured to output a flip control signal to the first source driving module and the second source driving module, the first source driving module is configured to flip the polarity of each first data line according to the flip control signal, and the first source driving module is further configured to control the voltage of the adjusting line input common electrode or the voltage with the same polarity as the N-1th first data line according to the flip control signal, or the second source driving module is configured to flip the polarity of each second data line according to the flip control signal.

7. The display driving circuit according to any one of claims 1 to 6, wherein The display driving circuit comprises a plurality of display units and a plurality of source driving modules, the plurality of display units are arranged in sequence along the row direction, and in adjacent two display units, the former display unit in the row direction is configured as the first display unit, and the latter display unit is configured as the second display unit. The plurality of source driving modules are electrically connected with the plurality of display units one by one, the source driving module electrically connected with the first display unit is configured as the first source driving module, and the source driving module electrically connected with the second display unit is configured as the second source driving module. The adjusting line is a plurality of lines, and one adjusting line is arranged between any adjacent two display units.

8. The display driving circuit according to claim 7, wherein, The plurality of adjusting lines are directly electrically connected with the plurality of first source driving modules one by one.

9. The display driving circuit according to claim 7, wherein, The display driving circuit further comprises a plurality of switching modules, the plurality of switching modules are electrically connected with the plurality of adjusting lines and the N-1th first data line of the plurality of first display units one by one. The plurality of switching modules are electrically connected with the plurality of first source driving modules one by one, or at least two switching modules are electrically connected with the same first source driving module.

10. A display panel, characterized by, The display driving circuit comprises a pixel array and a display driving circuit as claimed in any one of claims 1-9, the pixel array comprises a common electrode and a plurality of arrayed pixel electrodes, each first data line and each second data line is electrically connected with a plurality of pixel electrodes.

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