Driving module and display device

Abstract

The invention belongs to the field of display, and particularly relates to a driving module and a display device.The driving module comprises a plurality of source electrode driving chips, an inversion mode selection module, a polarity partition control module and a picture detection module, and each source electrode driving chip is connected with multiple columns of data lines of a display panel; the inversion mode selection module is used for selectively outputting a first polarity signal or a second polarity signal, and the second polarity signal can enable continuous even number of polarities in the row direction of the display area controlled by the source electrode driving chip to be inverted; and the polarity partition control module is used for outputting the first polarity signal or the inverted second polarity signal to the source driving signals of the even columns to form a polarity symmetric mode. In the polarity symmetry mode, the pixel voltage coupling directions of the display areas controlled by the adjacent source electrode driving chips are opposite, crosstalk can be improved or eliminated, bright and dark lines can be prevented from being formed at the boundary position, and the display effect of the display panel is improved.

Description

Technical Field

[0001] The present application belongs to the field of display, and specifically relates to a driving module and a display device. Background Art

[0002] A thin film transistor liquid crystal display (TFT-LCD) includes an array substrate, an opposing substrate, and a liquid crystal layer disposed between the array substrate and the opposing substrate. When the liquid crystal display is displayed, the pixel electrode on one side of the array substrate and the common electrode on one side of the opposing substrate form a liquid crystal capacitor (Clc) to drive the liquid crystal molecules to deflect and control the brightness of each sub-pixel to achieve image display. The pixel electrode and the common electrode on one side of the array substrate form a storage capacitor (Cst) to maintain the voltage of the liquid crystal capacitor.

[0003] If a single-direction electric field is applied to the liquid crystal molecules for a long time, the liquid crystal molecules may be polarized, resulting in a decrease in display quality or even damage to the liquid crystal material. By reversing the polarity and alternating the direction of the electric field, the polarization of the liquid crystal molecules can be effectively avoided. Polarity reversal methods include frame reversal, row reversal, column reversal, and dot reversal.

[0004] When the liquid crystal display is displaying, the data line provides pixel voltage to the pixel electrode. The polarity reversal makes the pixel voltage greater than or less than the voltage of the common electrode. The coupling capacitance (Cdc) formed between the data line and the pixel electrode will cause the pixel voltage to shift, resulting in crosstalk, which affects the display effect of the liquid crystal display. Summary of the invention

[0005] The purpose of the present application is to provide a driving module and a display device to improve or eliminate crosstalk and improve the display effect of a liquid crystal display.

[0006] In order to achieve the above object, the present application provides a driving module, including a plurality of source driver chips, each of which is connected to a plurality of columns of data lines of a display panel, the source driver chips of odd columns are connected to a first signal line, and the source driver chips of even columns are connected to a second signal line, and the driving module further includes: an inversion mode selection module, connected to the timing controller, and used for selecting and outputting a first polarity signal or a second polarity signal generated by the timing controller, wherein the first polarity signal can cause a single-point inversion in the row direction of the display area controlled by the source driver chip, and the second polarity signal can cause the row direction of the display area controlled by the source driver chip to be inverted in a manner of n positive polarities and m negative polarities, where one of n and m is an even number; a polarity partition control module, connected to the inversion mode selection module and the second signal line, and configured to output the first polarity signal or the inverted second polarity signal; The picture detection module is connected to the display panel, the inversion mode selection module and the polarity partition control module, and is used to control the operation of the polarity partition control module and the inversion mode selection module according to the detected crosstalk degree of the display picture.

[0007] Optional, n is 2 and m is 1.

[0008] Optionally, the first polarity signal and the second polarity signal output by the picture detection module make the polarity inversion mode in the column direction and the polarity inversion mode in the row direction of the display panel the same.

[0009] Optionally, the polarity partition control module includes an inverter and a selector, the first input end of the selector is connected to the output end of the inversion mode selection module, the second input end of the selector is connected to the output end of the inversion mode selection module through the inverter, the output end of the selector is connected to the second signal line, and the control end of the selector is connected to the picture detection module.

[0010] Optionally, the inversion mode selection module includes a selector, a first input terminal and a second input terminal of the selector are connected to the timing controller, a control terminal of the selector is directly or indirectly connected to the picture detection module, and an output terminal of the selector is connected to the first signal line and the polarity partition control module.

[0011] Optionally, the inversion mode selection module also includes a comparison unit, a first input end of the comparison unit is connected to the first signal line, a second input end of the comparison unit is connected to the second signal line, an output end of the comparison unit is connected to the control end of the selector, and the comparison unit includes a comparator, an operational amplifier or an XOR gate circuit.

[0012] Optionally, the inversion mode selection module also includes a first transistor, which is an N-type field effect transistor, the control end of the first transistor is connected to the output end of the comparison unit, the first end of the first transistor is connected to the control power supply, and the second end of the first transistor is connected to the control end of the selector.

[0013] Optionally, the selector includes a second transistor and a third transistor, the second transistor is a P-type field effect transistor, the third transistor is an N-type field effect transistor, the control end of the second transistor and the control end of the third transistor are the control ends of the selector, the first end of the second transistor is the first input end of the selector, the first end of the third transistor is the second input end of the selector, and the second end of the second transistor and the second end of the third transistor are the output ends of the selector; or The selector includes a NOT gate circuit, a first AND gate circuit, a second AND gate circuit and an OR gate circuit. The first input end of the selector is the first input end of the first AND gate circuit, the second input end of the selector is the first input end of the second AND gate circuit, the input end of the NOT gate circuit and the second input end of the first AND gate circuit are control ends of the selector, the output end of the NOT gate circuit is connected to the second input end of the second AND gate circuit, the output end of the first AND gate circuit and the output end of the second AND gate circuit are respectively connected to the two input ends of the OR gate circuit, and the output end of the OR gate circuit is the output end of the selector.

[0014] Optionally, the picture detection module includes a timing controller, the timing controller includes a waveform recognition unit, the waveform recognition unit is connected to the common electrode of the display panel, the inversion mode selection module and the polarity partition control module, and the waveform recognition unit is used to control the polarity partition control module to output the inverted second polarity signal when the common electrode voltage exceeds a preset interval.

[0015] The present application also provides a display device, comprising: Display panel; The driving module is connected to the display panel.

[0016] The driving module and display device disclosed in this application have the following beneficial effects: In the present application, the driving module includes multiple source driver chips, a polarity partition control module, a picture detection module and an inversion mode selection module. Each source driver chip is connected to multiple columns of data lines of the display panel, the source driver chips of odd columns are connected to the first signal line, and the source driver chips of even columns are connected to the second signal line. The inversion mode selection module is used to select the output of the first polarity signal or the second polarity signal. The second polarity signal can reverse the row direction of the display area controlled by the source driver chip in the form of n positive polarities and m negative polarities. The polarity partition control module is used to output the first polarity signal or the inverted second polarity signal. The picture detection module is used to control the operation of the polarity partition control module and the inversion mode selection module according to the detected crosstalk degree of the display picture, so as to form a conventional polarity mode and a polarity symmetry mode. In the polarity symmetry mode, the pixel voltage coupling directions of the display areas controlled by adjacent source driver chips are opposite, which can offset the coupling and improve or eliminate crosstalk. At the same time, the row direction is a continuous even number of equal polarity inversions, which eliminates the difference in pixel polarity at the boundary position and other positions of the display area, avoids the formation of bright and dark lines at the boundary position, and improves the display effect of the display panel.

[0017] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the driving module in Example 1 of the present application.

[0021] Figure 2 This is a schematic diagram of the conventional polarity mode in Example 1 of the present application.

[0022] Figure 3 It is a schematic diagram of the polarity symmetry of the display area in the first embodiment of the present application.

[0023] Figure 4 This is a schematic diagram of a continuous even number of equal polarity reversals in the row direction in the first embodiment of the present application.

[0024] Figure 5 This is a schematic diagram of the polar symmetry mode in Example 1 of the present application.

[0025] Figure 6 This is a schematic diagram of polarity signals in Example 1 of the present application.

[0026] Figure 7 It is a structural diagram of the second selector in Example 1 of the present application.

[0027] Figure 8 This is the truth table of the second selector in the first embodiment of the present application.

[0028] Fig. 9 It is a schematic diagram of the structure of the XOR gate circuit in the first embodiment of the present application.

[0029] Fig.10 It is the truth table of the XOR gate circuit in the first embodiment of the present application.

[0030] Fig.11 Schematic diagram of the common electrode voltage waveform in Example 1 of the present application.

[0031] Fig.12 It is a schematic diagram of the structure of the display device in the second embodiment of the present application.

[0032] Description of reference numerals: 10. Drive module; 100, source driver chip; 200, polarity partition control module; 210, inverter; 221, second transistor; 222, third transistor; 300, picture detection module; 310, waveform recognition unit; 320, signal processing unit; 400, inversion mode selection module; 410, second selector; 411, NOT gate circuit; 412, first AND gate circuit; 413, second AND gate circuit; 414, OR gate circuit; 420, comparison unit; 430, first transistor; 501, first signal line; 502, second signal line; 503, control power supply; 20. Display panel; 21. First display area; 22. Second display area. DETAILED DESCRIPTION

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0034] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0035] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0036] Embodiment 1 See also Figure 1 As shown, in this embodiment, the driving module 10 is used to drive the display panel 20 to display a picture. The driving module 10 includes a source driving chip 100, a polarity partition control module 200, a picture detection module 300 and an inversion mode selection module 400. The display panel 20 includes a plurality of rows of scan lines and a plurality of columns of data lines. The driving module 10 includes a plurality of source driving chips 100 (including Figure 1 In S1-S4, each source driver chip 100 is connected to multiple columns of data lines of the display panel 20, that is, multiple source driver chips 100 form multiple columns. The source driver chips 100 in odd columns are connected to the first signal line 501, and the source driver chips 100 in even columns are connected to the second signal line 502. The total number of source driver chips 100 can be an odd number or an even number.

[0037] The timing controller (TCON) generates a first polarity signal (D0) or a second polarity signal (D1). The first polarity signal can cause a single-point reversal in the row direction of the display area controlled by the source driver chip 100, that is, the polarity reversal mode is "+-+-"; the second polarity signal can cause the row direction of the display area controlled by the source driver chip 100 to be reversed in the form of n positive polarities and m negative polarities, where one of n and m is an even number, that is, the polarity reversal mode is a continuous even number of equal polarity reversals. For example, n is 2, m is 1, and the polarity reversal mode of the row direction of the display area controlled by the source driver chip 100 is "++-++-". It should be understood that the polarity reversal mode of a row in the current frame is "++-++-", and the polarity reversal mode of the next frame is "--+--+".

[0038] The polarity partition control module 200 is connected to the inversion mode selection module 400 and the second signal line 502, and is used to output a first polarity signal or an inverted second polarity signal. The polarity partition control module 200 outputs a first polarity signal, and the display area controlled by the source driver chip 100 of the odd columns connected to the first signal line 501 and the display area controlled by the source driver chip 100 of the even columns connected to the second signal line 502 have the same polarity inversion mode; the polarity partition control module 200 outputs an inverted second polarity signal, and the display area controlled by the source driver chip 100 of the odd columns connected to the first signal line 501 and the display area controlled by the source driver chip 100 of the even columns connected to the second signal line 502 are symmetrical in polarity.

[0039] The image detection module 300 is connected to the display panel 20, the inversion mode selection module 400 and the polarity partition control module 200, and is used to control the polarity partition control module 200 and the inversion mode selection module 400 to work according to the detected crosstalk degree of the display image to form a normal polarity mode or a polarity symmetric mode.

[0040] In the normal polarity mode, the picture detection module 300 controls the inversion mode selection module 400 to select the output of the first polarity signal, and the first polarity signal is output to the source driver chip 100 of the odd column through the first signal line 501, and the polarity of the first display area 21 controlled by the source driver chip 100 of the odd column in the row direction is "+-+-"; the first polarity signal is output to the source driver chip 100 of the even column through the polarity partition control module 200 and the second signal line 502, and the polarity of the second display area 22 controlled by the source driver chip 100 of the even column in the row direction is "+-+-", such as Figure 2 As for the column direction, when scanning row by row, the polarity of the next row can be the same as that of the previous row, that is, the polarity inversion mode is column inversion, or the polarity of the next row is opposite to that of the previous row, that is, the polarity inversion mode is point inversion, depending on the specific situation.

[0041] It should be understood that if the polarity of the adjacent first display area 21 and the second display area 22 is symmetrical, and the pixel voltage and the common voltage of the first display area 21 and the second display area 22 are coupled in opposite directions, the coupling can be offset and the crosstalk can be improved or eliminated. However, the sub-pixels of the adjacent first display area 21 and the second display area 22 always have the polarity of "++" or "--", which will not change. Under the effect of long-term lighting and aging, this part of the liquid crystal may be affected to a certain extent. In addition, at the boundary between the adjacent first display area 21 and the second display area 22, the polarity of the sub-pixels in the row direction is always the same, while the polarity of the sub-pixels in the same column in other areas alternates between "+-+-", such as Figure 3As shown, the sub-pixel at the boundary position becomes brighter or darker than the surrounding sub-pixels, that is, a bright line or a dark line is formed, which affects the display effect of the display panel 20.

[0042] In order to improve or eliminate the display unevenness caused by bright and dark lines, in the polarity symmetry mode of this embodiment, the picture detection module 300 controls the inversion mode selection module 400 to output the second polarity signal and controls the polarity partition control module 200 to output the inverted second polarity signal. The entire display panel 20 has a row direction with a continuous even number of equal polarity inversions, such as Figure 4 As shown, the difference in pixel polarity between the boundary position and other positions of the display panel 20 is eliminated, thereby avoiding the formation of bright and dark lines at the boundary position.

[0043] In this embodiment, the driving module 10 includes a plurality of source driving chips 100, a polarity partitioning control module 200, a picture detection module 300 and an inversion mode selection module 400. Each source driving chip 100 is connected to a plurality of columns of data lines of the display panel 20. The source driving chips 100 of the odd columns are connected to the first signal line 501, and the source driving chips 100 of the even columns are connected to the second signal line 502. The inversion mode selection module 400 is connected to the timing controller to select the first polarity signal or the second polarity signal generated by the output timing controller. The first polarity signal can enable the display area row controlled by the source driving chip 100 to be The direction is single-point inversion, and the second polarity signal can reverse the row direction of the display area controlled by the source driver chip 100 in the form of n positive polarities and m negative polarities. The polarity partition control module 200 is connected to the inversion mode selection module 400 and the second signal line 502, and is used to output the first polarity signal or the inverted second polarity signal. The picture detection module 300 is connected to the display panel 20, the inversion mode selection module 400 and the polarity partition control module 200, and is used to control the polarity partition control module 200 and the inversion mode selection module 400 to work according to the detected crosstalk degree of the display picture, forming a conventional polarity mode and a polarity symmetric mode. In the polarity symmetric mode, the pixel voltage coupling directions of the display areas controlled by the adjacent source driver chips 100 are opposite, which can offset the coupling, improve or eliminate the crosstalk, and at the same time, the row direction is a continuous even number of equal polarity inversions, which eliminates the polarity difference of the pixels at the boundary position of the display area and other positions, which not only improves or eliminates the crosstalk, but also avoids the formation of bright and dark lines at the boundary position, thereby improving the display effect of the display panel 20.

[0044] In some embodiments, n is 2, and m is 1, that is, the polarity inversion mode of the row direction of the display area controlled by the source driver chip 100 is “++-++-”.

[0045] The row direction is two consecutive equal polarity inversions. The polarity inversion method is closer to point inversion, and the polarity changes between sub-pixels are more dispersed. This dispersed polarity change can effectively reduce flicker and improve display uniformity.

[0046] In some embodiments, during line-by-line scanning, the waveforms of the first polarity signal and the second polarity signal are as follows: Figure 6 The first polarity signal and the second polarity signal output by the image detection module 300 make the polarity inversion mode in the column direction of the display panel 20 the same as the polarity inversion mode in the row direction, as shown in FIG. Figure 5 shown.

[0047] The polarity inversion method in the column direction of the display panel 20 is the same as the polarity inversion method in the row direction, which can further reduce flicker and improve display uniformity.

[0048] See also Figure 1 As shown, the polarity partition control module 200 includes an inverter 210 and a selector, the selector of the polarity partition control module 200 is a first selector, the first input end of the first selector is connected to the output end of the inversion mode selection module 400, the second input end of the first selector is connected to the output end of the inversion mode selection module 400 through the inverter 210, the output end of the first selector is connected to the second signal line 502, and the control end of the first selector is connected to the picture detection module 300.

[0049] In the normal polarity mode, the image detection module 300 controls the inversion mode selection module 400 to select and output the first polarity signal, and the first polarity signal is output to the source driver chip 100 of the odd column through the first signal line 501, and the first polarity signal is output to the source driver chip 100 of the even column through the first input end of the first selector and the second signal line 502, and the entire display panel 20 is single-point inversion. In the polarity symmetry mode, the image detection module 300 controls the inversion mode selection module 400 to select and output the second polarity signal, and the second polarity signal is output to the source driver chip 100 of the odd column through the first signal line 501, and the second polarity signal is output to the source driver chip 100 of the even column through the inverter 210, the second input end of the first selector, and the second signal line 502, and the entire display panel 20 is two consecutive equal polarity inversions.

[0050] In some embodiments, the first selector includes a second transistor 221 and a third transistor 222, the second transistor 221 is a P-type field effect transistor (PMOS), and the third transistor 222 is an N-type field effect transistor (NMOS). The control end of the second transistor 221 and the control end of the third transistor 222 are the control ends of the first selector, the first end of the second transistor 221 is the first input end of the first selector, the first end of the third transistor 222 is the second input end of the first selector, and the second end of the second transistor 221 and the second end of the third transistor 222 are the output ends of the first selector.

[0051] In the normal polarity mode, the picture detection module 300 outputs a low-level signal, the second transistor 221 is turned on and the third transistor 222 is turned off, and the first polarity signal is output to the source driver chip 100 of the even column through the second transistor 221 and the second signal line 502; in the polarity symmetry mode, the picture detection module 300 outputs a high-level signal, the second transistor 221 is turned off and the third transistor 222 is turned on, and the second polarity signal is output to the source driver chip 100 of the even column through the inverter 210, the third transistor 222, and the second signal line 502, and the polarity of the display area controlled by adjacent source driver chips 100 is symmetrical.

[0052] The first selector includes a second transistor 221 and a third transistor 222 . The first selector has a simple structure, which can reduce the manufacturing cost of the driving module 10 .

[0053] See also Figure 1 As shown, the inversion mode selection module 400 includes a selector, and the selector of the inversion mode selection module 400 is a second selector 410. The selector of the polarity partition control module 200 and the selector of the inversion mode selection module 400 have different structures. The first input end and the second input end of the second selector 410 are connected to the timing controller, the control end of the second selector 410 is directly connected to the picture detection module 300, and the output end of the second selector 410 is connected to the first signal line 501 and the polarity partition control module 200.

[0054] The inversion mode selection module 400 includes a second selector 410. The second selector 410 selects to output a first polarity signal or a second polarity signal to avoid mutual interference between the two polarity signals.

[0055] See also Figure 7 and Figure 8As shown, the second selector 410 includes a NOT gate circuit 411, a first AND gate circuit 412, a second AND gate circuit 413 and an OR gate circuit 414. The first input end of the second selector 410 is the first input end of the first AND gate circuit 412, the second input end of the second selector 410 is the first input end of the second AND gate circuit 413, the input end of the NOT gate circuit 411 and the second input end of the first AND gate circuit 412 are the control end (S) of the second selector 410, the output end of the NOT gate circuit 411 is connected to the second input end of the second AND gate circuit 413, the output end of the first AND gate circuit 412 and the output end of the second AND gate circuit 413 are respectively connected to the two input ends of the OR gate circuit 414, and the output end of the OR gate circuit 414 is the output end (Y1) of the second selector 410.

[0056] The control end of the second selector 410 is connected to the picture detection module 300. When the picture detection module 300 outputs a low level signal, the second selector 410 outputs a first polarity signal; when the picture detection module 300 outputs a high level signal, the second selector 410 outputs a second polarity signal.

[0057] See also Figure 1 As shown, the inversion mode selection module 400 further includes a comparison unit 420, a first input end of the comparison unit 420 is connected to the first signal line 501, a second input end of the comparison unit 420 is connected to the second signal line 502, and an output end of the comparison unit 420 is connected to the control end of the second selector 410, that is, the control end of the second selector 410 is indirectly connected to the picture detection module 300. The comparison unit 420 includes a comparator or an operational amplifier.

[0058] In the normal polarity mode, the first signal line 501 signal and the second signal line 502 signal are both first polarity signals, the two input terminals of the comparator are both high level or low level, the comparator outputs a low level signal to the control terminal of the second selector 410, the second selector 410 chooses to output the first polarity signal, and the display panel 20 is single-point inversion in the row direction; in the polarity symmetry mode, the first signal line 501 signal is a second polarity signal, the second signal line 502 signal is a second polarity signal inverted by the inverter 210, the first signal line 501 signal and the second signal line 502 signal have different phases, one input terminal of the comparison unit 420 is high level and the other input terminal is low level, the comparison unit 420 outputs a high level signal to the control terminal of the second selector 410, the second selector 410 chooses to output the second polarity signal, and the display panel 20 is two consecutive equal polarity inversions in the row direction.

[0059] The comparison unit 420 is a comparator or an operational amplifier. The comparison unit 420 has a simple structure, which can reduce the manufacturing cost of the driving module 10. The comparison unit 420 compares the signal of the first signal line 501 and the signal of the second signal line 502, and outputs a low level signal when the signal of the first signal line 501 and the signal of the second signal line 502 are the same, and outputs a high level signal when the signal of the first signal line 501 and the signal of the second signal line 502 are different. The output signal of the comparison unit 420 is used to control the second selector 410, which can reduce the output signal of the picture detection module 300 and reduce the structural complexity of the picture detection module 300.

[0060] In some embodiments, the comparison unit 420 includes an XOR gate circuit. Fig. 9 and Fig.10 As shown, the first input terminal (A) of the XOR gate circuit is connected to the first signal line 501 , the second input terminal (B) of the XOR gate circuit is connected to the second signal line 502 , and the output terminal (Y2) of the XOR gate circuit is connected to the second selector 410 .

[0061] In the normal polarity mode, the signal of the first signal line 501 and the signal of the second signal line 502 are both first polarity signals, the two input ends of the XOR gate circuit are both high level or low level, the XOR gate circuit outputs a low level signal to the control end of the second selector 410, the second selector 410 chooses to output the first polarity signal, and the display panel 20 is single-point inversion in the row direction; in the polarity symmetry mode, the signal of the first signal line 501 is the second polarity signal, the signal of the second signal line 502 is the inverted second polarity signal, the phases of the first signal line 501 and the second signal line 502 are different, one input end of the XOR gate circuit is high level and the other input end is low level, the XOR gate circuit outputs a high level signal to the control end of the second selector 410, the second selector 410 chooses to output the second polarity signal, and the display panel 20 is a continuous even number of equal polarity inversions in the row direction.

[0062] In some embodiments, the inversion mode selection module 400 also includes a first transistor 430, which is an N-type field effect transistor. The control end of the first transistor 430 is connected to the output end of the comparison unit 420, the first end of the first transistor 430 is connected to the control power supply 503, and the second end of the first transistor 430 is connected to the control end of the second selector 410.

[0063] The comparison unit 420 controls the first transistor 430 to be turned on or off, and the control power supply 503 controls the second selector 410 to work, so as to avoid the insufficient driving capability of the comparison unit 420 affecting the selection signal of the second selector 410.

[0064] In some embodiments, the image detection module 300 is a timing controller, which includes a waveform recognition unit 310 and a signal processing unit 320. The waveform recognition unit 310 is connected to the common electrode of the display panel 20 and the polarity partition control module 200. When the common electrode voltage Vcom exceeds the preset interval, the waveform recognition unit 310 controls the signal processing unit 320 to output a high-level control signal and a second polarity signal to form a polarity symmetric mode; when the common electrode voltage Vcom does not exceed the preset interval, the waveform recognition unit 310 controls the signal processing unit 320 to output a low-level control signal and a first polarity signal to form a normal polarity mode.

[0065] It should be noted that the picture detection module 300 may be a timing controller, but is not limited thereto. The picture detection module 300 may also be an additional detection module, depending on the specific situation.

[0066] When the pixel voltage is offset during crosstalk, it will cause the common electrode voltage Vcom to fluctuate. In the waveform recognition unit 310, an interval value is set according to the common electrode voltage Vcom, that is, a positive and negative trigger value m1 and m2 are set, such as Fig.11 As shown, when it is identified that the common electrode voltage Vcom exceeds the preset interval (greater than m1 and maintained for t1 time or less than m2 and maintained for t2 time, indicating serious crosstalk and poor picture effect), a high-level control signal is output to the polarity partition control module 200, and the display panel 20 switches to the polarity symmetric mode. The pixel voltage and common voltage coupling directions of the adjacent first display area 21 and second display area 22 are opposite, so that the coupling can be offset and the crosstalk can be improved or eliminated. On the contrary, when the common electrode voltage Vcom does not exceed the preset interval, a low-level control signal is output to the polarity partition control module 200, and the display panel 20 is in the normal polarity mode.

[0067] In some embodiments, the timing controller can detect the display screen and control the display panel 20 to a conventional polarity mode or a polarity symmetric mode according to the display screen. When using the timing controller to detect the display screen, some complex screens may not be detected, and the detection must be performed based on the pixel arrangement structure and number. The existing known crosstalk screens may not be complete. If a new screen has crosstalk later, then the pixel structure of this screen is different from the existing one, and the timing controller cannot detect it. In addition, the crosstalk phenomenon of different liquid crystals is inconsistent, and the unified setting cannot be fully compatible, which requires more debugging time.

[0068] In this embodiment, the waveform recognition unit 310 is connected to the common electrode of the display panel 20. The waveform recognition unit 310 controls the signal processing unit 320 to output a control signal according to the common electrode voltage Vcom, switching the display panel 20 to a conventional polarity mode or a polarity symmetric mode. Compared with the solution of using a timing controller to detect the display screen, it can be generally used to detect different crosstalk phenomena.

[0069] Embodiment 2 See also Fig.12 As shown, the display device in this embodiment includes the driving module 10 and the display panel 20 disclosed in the first embodiment, and the display panel 20 is connected to the source driving chip 100 of the driving module 10 .

[0070] In this embodiment, the display device includes a driving module 10, which includes a plurality of source driving chips 100, a polarity partitioning control module 200, a picture detection module 300, and an inversion mode selection module 400. Each source driving chip 100 is connected to a plurality of columns of data lines of the display panel 20, the source driving chips 100 of the odd columns are connected to the first signal line 501, and the source driving chips 100 of the even columns are connected to the second signal line 502. The inversion mode selection module 400 selects to output the first polarity signal or the second polarity signal. The polarity signal, the second polarity signal can make the row direction of the display area controlled by the source driver chip 100 reverse in the form of n positive polarities and m negative polarities. The polarity partition control module 200 is connected to the reversal mode selection module 400 and the second signal line 502, and is used to output the first polarity signal or the inverted second polarity signal. The picture detection module 300 is used to control the polarity partition control module 200 and the reversal mode selection module 400 to work according to the detected crosstalk degree of the display picture, forming a conventional polarity mode and a polarity symmetric mode. In the polarity symmetric mode, the pixel voltage coupling directions of the display areas controlled by the adjacent source driver chips 100 are opposite, which can offset the coupling, improve or eliminate the crosstalk. At the same time, the row direction is a continuous even number of equal polarity reversals, which eliminates the difference in pixel polarity at the boundary position of the display area and other positions, which not only improves or eliminates the crosstalk, but also avoids the formation of bright and dark lines at the boundary position, thereby improving the display effect of the display panel 20 and the display device.

[0071] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0072] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A driving module, comprising a plurality of source driving chips, each of which is connected to a plurality of columns of data lines of a display panel, characterized in that: The source driver chips in odd columns are connected to the first signal line, and the source driver chips in even columns are connected to the second signal line. The driver module further includes: an inversion mode selection module, connected to the timing controller, and used for selecting and outputting a first polarity signal or a second polarity signal generated by the timing controller, wherein the first polarity signal can cause a single-point inversion in the row direction of the display area controlled by the source driver chip, and the second polarity signal can cause the row direction of the display area controlled by the source driver chip to be inverted in a manner of n positive polarities and m negative polarities, where one of n and m is an even number; a polarity partition control module, connected to the inversion mode selection module and the second signal line, and configured to output the first polarity signal or the inverted second polarity signal; The picture detection module is connected to the display panel, the inversion mode selection module and the polarity partition control module, and is used to control the operation of the polarity partition control module and the inversion mode selection module according to the detected crosstalk degree of the display picture.

2. The driving module according to claim 1, characterized in that: n is 2 and m is 1.

3. The driving module according to claim 2, characterized in that: The first polarity signal and the second polarity signal output by the picture detection module make the polarity inversion mode in the column direction and the polarity inversion mode in the row direction of the display panel the same.

4. The driving module according to claim 1, characterized in that: The polarity partition control module includes an inverter and a selector, the first input end of the selector is connected to the output end of the inversion mode selection module, the second input end of the selector is connected to the output end of the inversion mode selection module through the inverter, the output end of the selector is connected to the second signal line, and the control end of the selector is connected to the picture detection module.

5. The driving module according to claim 1, characterized in that: The inversion mode selection module includes a selector, a first input end and a second input end of the selector are connected to the timing controller, a control end of the selector is directly or indirectly connected to the picture detection module, and an output end of the selector is connected to the first signal line and the polarity partition control module.

6. The driving module according to claim 5, characterized in that: The inversion mode selection module also includes a comparison unit, a first input end of the comparison unit is connected to the first signal line, a second input end of the comparison unit is connected to the second signal line, an output end of the comparison unit is connected to the control end of the selector, and the comparison unit includes a comparator, an operational amplifier or an XOR gate circuit.

7. The driving module according to claim 6, characterized in that: The inversion mode selection module also includes a first transistor, which is an N-type field effect transistor. The control end of the first transistor is connected to the output end of the comparison unit, the first end of the first transistor is connected to the control power supply, and the second end of the first transistor is connected to the control end of the selector.

8. The driving module according to any one of claims 4 to 7, characterized in that: The selector comprises a second transistor and a third transistor, the second transistor is a P-type field effect transistor, the third transistor is an N-type field effect transistor, the control end of the second transistor and the control end of the third transistor are the control ends of the selector, the first end of the second transistor is the first input end of the selector, the first end of the third transistor is the second input end of the selector, and the second end of the second transistor and the second end of the third transistor are the output ends of the selector; or The selector includes a NOT gate circuit, a first AND gate circuit, a second AND gate circuit and an OR gate circuit. The first input end of the selector is the first input end of the first AND gate circuit, the second input end of the selector is the first input end of the second AND gate circuit, the input end of the NOT gate circuit and the second input end of the first AND gate circuit are control ends of the selector, the output end of the NOT gate circuit is connected to the second input end of the second AND gate circuit, the output end of the first AND gate circuit and the output end of the second AND gate circuit are respectively connected to the two input ends of the OR gate circuit, and the output end of the OR gate circuit is the output end of the selector.

9. The driving module according to claim 1, characterized in that: The picture detection module includes a timing controller, which includes a waveform recognition unit. The waveform recognition unit is connected to the common electrode of the display panel, the inversion mode selection module and the polarity partition control module. The waveform recognition unit is used to control the polarity partition control module to output the inverted second polarity signal when the common electrode voltage exceeds a preset interval.

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

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