Liquid crystal display panel and crosstalk suppression method thereof, display equipment and storage medium

Abstract

The invention discloses a liquid crystal display panel and a crosstalk suppression method thereof, display equipment and a storage medium, and relates to the technical field of liquid crystal display, and a circuit comprises a pixel driving module, a crosstalk suppression module and a thin film chip module; the voltage feedback end of the pixel driving module is electrically connected with the signal acquisition end of the crosstalk suppression module, and the universal signal end of the crosstalk suppression module is electrically connected with the signal polarity end of the thin film chip module; the crosstalk suppression module is configured to access a coupling analog signal sent by a voltage feedback end from a common electrode wire electrically connected with the pixel driving module to a data line through a signal acquisition end when the pixel driving module is driven by a gate driving signal to access a pixel display voltage of the data line for pixel charging. And determining a minimum coupling numerical value according to the coupling analog signal, and outputting the minimum coupling numerical value to the signal polarity end as a signal polarity optimal value of the thin film chip module. The liquid crystal display panel aims to suppress horizontal crosstalk of the liquid crystal display panel so as to improve the display quality.

Description

Technical Field

[0001] The present application relates to the field of liquid crystal display technology, and in particular to a liquid crystal display panel and a crosstalk suppression method thereof, a display device, and a storage medium. Background Art

[0002] TFT-LCD (Thin Film Transistor-Liquid Crystal Display) occupies an important position in the display field due to its advantages of thinness, low power consumption, and high resolution. However, as users' requirements for display quality continue to increase, display defects of LCD panels are gradually emerging, among which the horizontal crosstalk phenomenon of LCD panels is particularly prominent.

[0003] Horizontal crosstalk is caused by the coupling capacitor between the common electrode (VCOM) and the data line (Data line) in the LCD panel. When the voltage on the data line changes, the change is transmitted to VCOM through the coupling capacitor, causing the Vcom voltage to fluctuate, which in turn affects the charging effect of the pixel, causing the actual brightness to deviate from the expected brightness, resulting in uneven brightness or horizontal crosstalk; Figure 1 As shown, when the gray background is displayed, due to the instability of the Vcom voltage, the charging effect of some pixels is not consistent with the expectation, resulting in differences in the brightness of the picture and forming obvious horizontal crosstalk stripes, which not only reduces the visual effect of the picture, but also seriously affects the display quality.

[0004] Therefore, how to effectively suppress the horizontal crosstalk of a liquid crystal display panel to improve display quality is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of the present application is to provide a liquid crystal display panel and a crosstalk suppression method thereof, a display device and a storage medium, aiming to effectively suppress the horizontal crosstalk of the liquid crystal display panel to improve the display quality.

[0006] To achieve the above-mentioned object, the present application provides a liquid crystal display panel, which includes a pixel driving module, a crosstalk suppression module and a thin film chip module; The voltage feedback terminal of the pixel driving module is electrically connected to the signal acquisition terminal of the crosstalk suppression module, and the universal signal terminal of the crosstalk suppression module is electrically connected to the signal polarity terminal of the thin film chip module; The crosstalk suppression module is configured to, when the pixel driving module is driven by a gate driving signal and is connected to the pixel display voltage of the data line for pixel charging, connect the coupling analog signal between the common electrode line electrically connected to the pixel driving module and the data line sent by the voltage feedback end through the signal acquisition end, determine the minimum coupling value based on the coupling analog signal, and output the minimum coupling value as the optimal value of the signal polarity of the thin film chip module to the signal polarity end.

[0007] In one embodiment, the liquid crystal display panel includes: in-plane wiring, a display substrate, and a circuit assembly board; The in-plane wiring connects the voltage feedback end of the pixel driving module and the circuit assembly board, and the in-plane wiring is configured to transmit the coupled analog signal from the voltage feedback end to the crosstalk suppression module disposed on the circuit assembly board; The in-plane wiring and the pixel driving module are both arranged in the display substrate. The side of the display substrate close to the circuit assembly board is a flexible circuit board layer. The thin film chip module is electrically connected between the flexible circuit board layer and the circuit assembly board.

[0008] In one embodiment, the crosstalk suppression module includes an analog-to-digital conversion unit and a timing control unit; The signal input end of the analog-to-digital conversion unit constitutes the signal acquisition end of the crosstalk suppression module, and is electrically connected to the voltage feedback end of the pixel driving module through the in-plane wiring; The signal output terminal of the analog-to-digital conversion unit is electrically connected to the feedback receiving terminal of the timing control unit; The data signal terminal of the timing control unit constitutes the common signal terminal of the crosstalk suppression module and is electrically connected to the signal polarity terminal of the thin film chip module.

[0009] In one embodiment, the liquid crystal display panel includes gate lines; The gate driving end of the pixel driving module is electrically connected to the gate line, the data access end of the pixel driving module is electrically connected to the data line, and the data output end of the pixel driving module is electrically connected to the common electrode line; The pixel driving module is configured to access the gate driving signal sent by the gate line through the gate driving end, access the pixel display voltage sent by the data line through the signal input end under the drive of the gate driving signal, and then transfer the pixel display voltage to the common electrode line through the data output end for pixel charging.

[0010] In one embodiment, the pixel driving module includes a thin film transistor, a first capacitor and a second capacitor; The control end of the thin film transistor constitutes the gate driving end of the pixel driving module and is electrically connected to the gate line, and the first channel end of the thin film transistor constitutes the data access end of the pixel driving module and is electrically connected to the data line; The second channel end of the thin film transistor constitutes the data output end of the pixel driving module and is electrically connected to the first end of the first capacitor and the first end of the second capacitor respectively, and the second end of the second capacitor is electrically connected to the common electrode line; The second end of the first capacitor constitutes a voltage feedback end of the pixel driving module and is electrically connected to a signal collection end of the crosstalk suppression module.

[0011] In one embodiment, the liquid crystal display panel includes a third capacitor; The third capacitor is electrically connected between the common electrode line and the data line, and the common electrode line and the data line are arranged to intersect each other perpendicularly.

[0012] In addition, to achieve the above-mentioned purpose, the present application also provides a crosstalk suppression method for a liquid crystal display panel, the crosstalk suppression method for a liquid crystal display panel is applied to any of the above-mentioned liquid crystal display panels, and the crosstalk suppression method for a liquid crystal display panel includes: When the pixel driving module is driven by the gate driving signal and connected to the pixel display voltage of the data line for pixel charging, the signal acquisition end of the crosstalk suppression module is connected to the coupling analog signal between the common electrode line electrically connected to the pixel driving module and the data line sent from the voltage feedback end of the pixel driving module; A minimum coupling value is determined according to the coupling simulation signal, and the minimum coupling value is output to the signal polarity end as an optimal value of the signal polarity of the thin film chip module.

[0013] In one embodiment, the step of determining the minimum coupling value according to the coupling simulation signal comprises: Determine a plurality of signal setting states of the thin film chip module, and convert the coupling analog signal into a coupling digital quantity corresponding to each of the signal setting states through an analog-to-digital conversion unit; A coupling digital quantity with the smallest value is found from the plurality of coupling digital quantities, and the coupling digital quantity with the smallest value is used as the minimum coupling value.

[0014] In addition, to achieve the above-mentioned purpose, the present application also provides a display device, the display device includes the above-mentioned liquid crystal display panel; or, The display device includes a processor, a memory, and a crosstalk suppression program for a liquid crystal display panel stored in the memory and executable by the processor, wherein when the crosstalk suppression program for the liquid crystal display panel is executed by the processor, the steps of the above-mentioned crosstalk suppression method for the liquid crystal display panel are implemented.

[0015] In addition, to achieve the above-mentioned purpose, the present application also provides a storage medium, which is a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned crosstalk suppression method of the liquid crystal display panel are implemented.

[0016] The liquid crystal display panel provided in the present application integrates a pixel driving module, a crosstalk suppression module and a thin film chip module, and connects the voltage feedback end of the pixel driving module with the signal acquisition end of the crosstalk suppression module, and connects the universal signal end of the crosstalk suppression module with the signal polarity end of the thin film chip module, thereby effectively solving the horizontal crosstalk problem caused by the coupling capacitance between the common electrode and the data line to improve the display quality of the liquid crystal display panel. Specifically, when the pixel driving module is driven by the gate driving signal to access the pixel display voltage of the data line for pixel charging, the crosstalk suppression module can collect the coupling analog signal between the common electrode line and the data line in real time, and can accurately obtain the minimum coupling value based on the coupling analog signal, so that the minimum coupling value can intuitively reflect the state of the minimum Vcom voltage fluctuation under the premise of maintaining the stability of the pixel charging effect; next, the minimum coupling value is output as the optimal signal polarity value of the thin-film chip module to adjust the POLC signal of the thin-film chip module to the optimal signal polarity value to maintain the optimal state of the POLC signal, so as to maximize the suppression of the Vcom voltage fluctuation caused by the coupling capacitor, effectively prevent the horizontal crosstalk stripes caused by the Vcom voltage fluctuation, ensure the uniform brightness of the liquid crystal display panel, and significantly improve the display quality of the liquid crystal display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 is a schematic diagram of horizontal crosstalk stripes involved in a liquid crystal display panel; Figure 2 is a structural block diagram of the first embodiment of the liquid crystal display panel of the present application; Figure 3 is a schematic diagram of the position of coupling capacitors involved in an embodiment of a liquid crystal display panel of the present application; Figure 4 is a schematic diagram of the inter-module layout involved in an embodiment of a liquid crystal display panel of the present application; Figure 5 It is a schematic diagram of a crosstalk suppression module circuit involved in an embodiment of a liquid crystal display panel of the present application; Figure 6 It is a schematic diagram of a pixel driving module circuit involved in an embodiment of a liquid crystal display panel of the present application; Figure 7 It is a schematic diagram of the structure of the display device involved in the embodiment of the present application.

[0020] Description of Figure Numbers: 10. Pixel driving module; 20. Crosstalk suppression module; 30. Thin-film chip module; P1. Voltage feedback terminal; P2. Signal acquisition terminal; P3. Universal signal terminal; P4. Signal polarity terminal; L_vcom. Common electrode line; L_data. Data line; L_gate. Gate line; L_m. In-plane wiring; 100. Display substrate; 200. Circuit assembly board; 201. Analog-to-digital conversion unit; 202. Timing control unit; T1. Thin-film transistor; C1. First capacitor; C2. Second capacitor; C3. Third capacitor.

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0025] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0026] With the rapid development of liquid crystal thin film transistor displays, the demands for high resolution, wide viewing angle, high response speed, high aperture ratio, etc. have put forward higher requirements for display quality. As the pixel size and line spacing become smaller and smaller, the coupling capacitance between signals becomes larger and larger. When the voltage on one of the signals changes, the signal with coupling capacitance will be interfered by the changed signal, among which horizontal crosstalk is a common phenomenon.

[0027] Horizontal crosstalk is caused by the coupling of the common electrode (VCOM) to the data line (Data line), which causes the Vcom voltage to be unstable, thus affecting the charging effect of the pixel. Figure 1 (b) The charging effect shown is similar to Figure 1 (a) does not match the expected effect, resulting in brightness difference.

[0028] In order to solve the horizontal crosstalk problem caused by the coupling capacitance between the common electrode and the data line and improve the display quality of the liquid crystal display panel, the present application provides a liquid crystal display panel and a crosstalk suppression method thereof, a display device and a storage medium.

[0029] The present application provides a liquid crystal display panel, referring to Figure 2 As shown, Figure 2It is a structural block diagram of the first embodiment of the liquid crystal display panel of the present application. The liquid crystal display panel includes a pixel driving module 10, a crosstalk suppression module 20 and a thin film chip module 30; the voltage feedback terminal P1 of the pixel driving module 10 is electrically connected to the signal acquisition terminal P2 of the crosstalk suppression module 20, and the common signal terminal P3 of the crosstalk suppression module 20 is electrically connected to the signal polarity terminal P4 of the thin film chip module 30; the crosstalk suppression module 20 is configured to, when the pixel driving module 10 is driven by the gate driving signal to access the pixel display voltage of the data line L_data to charge the pixel, the coupling analog signal Vcom_CF between the common electrode line L_vcom electrically connected to the pixel driving module 10 and the data line L_data sent by the voltage feedback terminal P1 is accessed through the signal acquisition terminal P2, the minimum coupling value is determined according to the coupling analog signal Vcom_CF, and the minimum coupling value is output to the signal polarity terminal P4 as the optimal value of the signal polarity of the thin film chip module 30.

[0030] In this embodiment, refer to Figure 3 , Figure 3This is a schematic diagram of the position of the coupling capacitor involved in an embodiment of the liquid crystal display panel of the present application. Since there is a coupling capacitor between the data line L_data and the common electrode line L_vcom, when the pixel display voltage of the data line L_data changes, the changed pixel display voltage is coupled to the common electrode line L_vcom through the coupling capacitor, thereby causing the Vcom voltage on the common electrode line L_vcom to be unstable. The present application introduces the voltage feedback terminal P1 of the pixel driving module 10 arranged in the surface of the liquid crystal display panel into the circuit assembly board 200 through the in-plane wiring L_m, thereby establishing an electrical connection with the signal acquisition terminal P2 of the crosstalk suppression module 20 on the circuit assembly board 200; next, when the pixel driving module 10 is driven by the gate driving signal to access the pixel display voltage of the data line L_data for pixel charging, the coupling analog signal Vcom_CF between the common electrode line L_vcom and the data line L_data is collected through the voltage feedback terminal P1 of the pixel driving module 10, and the coupling analog signal Vcom_CF is transmitted to the signal acquisition terminal P2 of the crosstalk suppression module 20 through the in-plane wiring L_m; at this time, after the crosstalk suppression module 20 receives the coupling analog signal Vcom_CF fed back by the voltage feedback terminal P1 through the signal acquisition terminal P2, The analog-to-digital conversion unit 201 in the suppression module 20 converts the coupling analog signal Vcom_CF into a coupling digital quantity corresponding to each signal setting state configured by the thin film chip module 30; next, the timing control unit 202 in the crosstalk suppression module 20 compares the sizes of the coupling digital quantities to take the coupling digital quantity with the smallest value among the multiple coupling digital quantities as the minimum coupling value to reflect the minimum influence of the coupling capacitor on the Vcom voltage; next, the minimum coupling value is set to the optimal value of the signal polarity of the thin film chip module 30 and then output to the signal polarity terminal P4 of the thin film chip module 30, thereby suppressing the influence of the coupling capacitor on the Vcom voltage, achieving the stability of the Vcom voltage, and effectively avoiding the horizontal crosstalk phenomenon caused by the coupling capacitor between the data line L_data and the common electrode line L_vcom, thereby significantly improving the display quality of the liquid crystal display panel.

[0031] It should be noted that the gate drive signal can be used Figure 2 The V_gate shown indicates that the gate drive signal is provided by the gate line L_gate set in the present application; the common electrode line L_vcom is used to provide the Vcom voltage; the data line L_data is used to provide the pixel display voltage, and the voltage jump of the variable pixel display voltage can be customized according to the application requirements, for example, the voltage jump of the variable pixel display voltage can be defined as 0V→10V. The above is only a feasible implementation method of the present application, and the present application does not impose any limitations here.

[0032] In summary, the liquid crystal display panel set up in the present application integrates a pixel driving module 10, a crosstalk suppression module 20 and a thin film chip module 30, and connects the voltage feedback terminal P1 of the pixel driving module 10 with the signal acquisition terminal P2 of the crosstalk suppression module 20, and connects the common signal terminal P3 of the crosstalk suppression module 20 with the signal polarity terminal P4 of the thin film chip module 30, thereby effectively solving the horizontal crosstalk problem caused by the coupling capacitance between the common electrode and the data line L_data to improve the display quality of the liquid crystal display panel. Specifically, when the pixel driving module 10 is driven by the gate driving signal to access the pixel display voltage of the data line L_data for pixel charging, the crosstalk suppression module 20 can collect the coupling analog signal Vcom_CF between the common electrode line L_vcom and the data line L_data in real time, and can accurately obtain the minimum coupling value based on the coupling analog signal Vcom_CF, so that the minimum coupling value can intuitively reflect the state of the minimum Vcom voltage fluctuation under the premise of maintaining the stability of the pixel charging effect; next, the minimum coupling value is output as the optimal signal polarity value of the thin film chip module 30, so as to adjust the POLC signal of the thin film chip module 30 to the optimal signal polarity value to maintain the optimal state of the POLC signal, so as to maximize the suppression of the Vcom voltage fluctuation caused by the coupling capacitor, effectively prevent the horizontal crosstalk stripes caused by the Vcom voltage fluctuation, ensure the uniform brightness of the liquid crystal display panel, and significantly improve the display quality of the liquid crystal display panel.

[0033] Further, in some feasible embodiments, referring to Figure 4 , Figure 4 It is a schematic diagram of the inter-module layout involved in an embodiment of the liquid crystal display panel of the present application. The liquid crystal display panel provided in the present application includes: an in-plane wiring L_m, a display substrate 100 and a circuit assembly board 200; the in-plane wiring L_m connects the voltage feedback terminal P1 of the pixel driving module 10 and the circuit assembly board 200, and the in-plane wiring L_m is configured to transmit the coupled analog signal Vcom_CF from the voltage feedback terminal P1 to the crosstalk suppression module 20 provided on the circuit assembly board 200; the in-plane wiring L_m and the pixel driving module 10 are both provided in the display substrate 100, and the side of the display substrate 100 close to the circuit assembly board 200 is a flexible circuit board layer, and the thin film chip module 30 is electrically connected between the flexible circuit board layer and the circuit assembly board 200.

[0034] In this embodiment, the traditional VCOM compensation method requires a feedback network that pulls back the Vcom voltage from the plane of the liquid crystal display panel to perform negative feedback compensation on the Vcom voltage. However, the compensated Vcom voltage needs to pass through the in-plane wiring L_m, which causes the compensated Vcom voltage to generate RC delay when passing through the in-plane wiring L_m, thereby affecting the compensation effect of the Vcom voltage. The present application introduces the voltage feedback terminal P1 (i.e., the feedback network of the Vcom voltage) of the pixel driving module 10 to the circuit assembly board 200 through the in-plane wiring L_m, so that the analog-to-digital conversion unit 201 in the crosstalk suppression module 20 on the circuit assembly board 200 performs high-speed acquisition and conversion of the coupled analog signal Vcom_CF output from the voltage feedback terminal P1, effectively avoiding the RC delay problem caused by the VCOM compensation signal passing through the in-plane wiring L_m in the traditional method, and reducing the loss and interference of the signal during transmission; next, the timing control unit 202 in the crosstalk suppression module 20 records the output of the thin film chip module 30 by the analog-to-digital conversion unit 201. The coupling digital quantity corresponding to each signal setting state can realize automatic detection of the coupling digital quantity corresponding to the display screen under different signal setting states, so that it can be applied to the horizontal crosstalk of the non-uniform display screen; next, the coupling digital quantity with the smallest value (i.e., the minimum coupling value) is found from multiple coupling digital quantities, so that the timing control unit 202 sets the minimum coupling value as the optimal value of the signal polarity of the thin film chip module 30 and outputs it to the signal polarity terminal P4 of the thin film chip module 30, thereby effectively preventing the horizontal crosstalk stripes that may be caused by the VCOM voltage fluctuation, ensuring the uniform brightness of the liquid crystal display panel, and significantly improving the display quality of the liquid crystal display panel.

[0035] It should be noted that Figure 4 The dotted line shown represents the in-plane wiring L_m set in the present application, and the common electrode line L_vcom is electrically connected to the gamma chip (ie, Gamma IC), that is, the Vcom voltage on the common electrode line L_vcom is provided by the gamma chip.

[0036] The thin film chip module 30 can be understood as COF (Chip On Flex or Chip On Film), and the number of the thin film chip module 30 includes at least one, and this application does not impose any restrictions here. For example, Figure 4 There are six thin film chip modules 30 shown, which are represented by thin film chip module 30 - 1 , thin film chip module 30 - 2 , thin film chip module 30 - 3 , thin film chip module 30 - 4 , thin film chip module 30 - 4 and thin film chip module 30 - 6 .

[0037] Exemplarily, when the number of thin film chip modules 30 is 1, there are two signal setting states of the thin film chip module 30, namely, a "0" signal state and a "1" signal state. The "0" signal state can be represented by [POLC1]=[0], and the "1" signal state can be represented by [POLC1]=[1], wherein [POLC1] represents the thin film chip module 30 with identification number 1. When the number of thin film chip modules 30 is 2, there are 4 signal setting states for each thin film chip module 30, namely, "00" signal state, "01" signal state, "10" signal state and "11" signal state, "00" signal state can be represented by [POLC12]=

[00] , "01" signal state can be represented by [POLC12]=

[01] , "10" signal state can be represented by [POLC12]=

[10] , and "11" signal state can be represented by [POLC12]=

[11] , where [POLC12] represents the thin film chip module 30 with identification number 1 and the thin film chip module 30 with identification number 2. That is, the number of signal setting states is 2. n , wherein n is the number of thin film chip modules 30 .

[0038] Further, in some other feasible embodiments, referring to Figure 5 , Figure 5 It is a circuit diagram of a crosstalk suppression module 20 involved in an embodiment of a liquid crystal display panel of the present application. The crosstalk suppression module 20 provided in the present application includes an analog-to-digital conversion unit 201 and a timing control unit 202; the signal input end of the analog-to-digital conversion unit 201 constitutes a signal acquisition end P2 of the crosstalk suppression module 20, and is electrically connected to the voltage feedback end P1 of the pixel driving module 10 through the in-plane wiring L_m; the signal output end of the analog-to-digital conversion unit 201 is electrically connected to the feedback receiving end of the timing control unit 202.

[0039] In this embodiment, since any pixel architecture has horizontal crosstalk, the conventional horizontal crosstalk suppression method includes changing the inversion method in addition to the VCOM compensation method. Specifically, when the timing controller detects horizontal crosstalk on the display screen, it adjusts the polarity inversion method of the data on the data line L_data to weaken the coupling effect of the data line L_data on the Vcom voltage on the common electrode line L_vcom, thereby eliminating the horizontal crosstalk phenomenon. However, this method has limitations, because changing the inversion method can only detect and process a limited number of screens, and it cannot effectively work for non-uniform screen conditions. The present application realizes automatic detection of the coupling digital quantity corresponding to the display screen under different signal setting states by integrating the analog-to-digital conversion unit 201 and the timing control unit 202 in the crosstalk suppression module 20, thereby avoiding the phenomenon that only a limited number of screens can be detected and processed by changing the inversion mode. That is, the present application directly introduces the voltage feedback terminal P1 of the pixel driving module 10 (that is, the feedback network of the Vcom voltage) to the circuit assembly board 200 through the in-plane wiring L_m, so that the analog-to-digital conversion unit 201 on the circuit assembly board 200 collects the coupling analog signal Vcom_CF at a high rate, and converts the coupling analog signal Vcom_CF into the coupling digital quantity corresponding to the thin-film chip module 30 under each signal setting state, and then transmits it to the timing control unit 202; next, the timing control unit 202 records the analog-to-digital The conversion unit 201 outputs the coupling digital quantity corresponding to the thin film chip module 30 in each signal setting state, thereby realizing automatic monitoring of the coupling digital quantities corresponding to different display screens in the liquid crystal display panel; then the timing control unit 202 compares the coupling digital quantities of each thin film chip module 30 in different signal setting states, and sets the optimal POLC signal (i.e., the optimal signal polarity value) of each thin film chip module 30 in the signal setting state (i.e., the target signal state) corresponding to the minimum coupling value through the obtained minimum coupling value, thereby realizing the optimization of the Vcom voltage of each display screen in the liquid crystal display panel, so that the fluctuation of the Vcom voltage in the target signal state has the least impact on the display screen, thereby effectively avoiding the generation of horizontal crosstalk stripes and significantly improving the display quality of the liquid crystal display panel.

[0040] It should be noted that the analog-to-digital conversion unit 201 can be understood as an A / D converter; the timing control unit 202 can be understood as a TCON IC (Timing Controller Integrated Circuit, timing control integrated circuit).

[0041] Further, in some feasible embodiments, referring to Figures 2 to 3The liquid crystal display panel includes a gate line L_gate; the gate driving end of the pixel driving module 10 is electrically connected to the gate line L_gate, the data access end of the pixel driving module 10 is electrically connected to the data line L_data, and the data output end of the pixel driving module 10 is electrically connected to the common electrode line L_vcom; the pixel driving module 10 is configured to access the gate driving signal sent by the gate line L_gate through the gate driving end, access the pixel display voltage sent by the data line L_data through the signal input end under the drive of the gate driving signal, and then transfer the pixel display voltage to the common electrode line L_vcom through the data output end for pixel charging.

[0042] In this embodiment, according to the electrical connection between the gate driving terminal of the pixel driving module 10 and the gate line L_gate, the pixel driving module 10 is driven by the gate driving signal of the gate line L_gate, through the electrical connection between the data access terminal of the pixel driving module 10 and the data line L_data, and transmits the pixel display voltage received at the data input terminal to the common electrode line L_vcom through the data output terminal of the pixel driving module 10 to complete the pixel charging process, thereby ensuring the efficiency and accuracy of the pixel charging.

[0043] Further, in some other feasible embodiments, referring to Figure 6 , Figure 6 This is a circuit diagram of a pixel driving module 10 involved in an embodiment of a liquid crystal display panel of the present application. The pixel driving module 10 includes a thin film transistor T1, a first capacitor C1 and a second capacitor C2; the control end of the thin film transistor T1 constitutes the gate driving end of the pixel driving module 10 and is electrically connected to the gate line L_gate, the first path end of the thin film transistor T1 constitutes the data access end of the pixel driving module 10 and is electrically connected to the data line L_data; the second path end of the thin film transistor T1 constitutes the data output end of the pixel driving module 10 and is electrically connected to the first end of the first capacitor C1 and the first end of the second capacitor C2, respectively, and the second end of the second capacitor C2 is electrically connected to the common electrode line L_vcom; the second end of the first capacitor C1 constitutes the voltage feedback end P1 of the pixel driving module 10 and is electrically connected to the signal acquisition end P2 of the crosstalk suppression module 20.

[0044] In this embodiment, refer to Figure 6(a), when the thin film transistor T1 is turned on by connecting the gate driving signal of the gate line L_gate through the control terminal of the thin film transistor T1, the pixel display voltage of the data line L_data is connected through the first channel terminal of the thin film transistor T1 to charge the second capacitor C2 electrically connected to the second channel terminal of the thin film transistor T1, and then transmitted to the common voltage line through the second capacitor C2. Since the first capacitor C1 detects that the first channel terminal of the thin film transistor T1 is connected to the pixel display voltage, that is, the first capacitor C1 detects that the pixel display voltage of the data line L_data changes, at this time, the pixel display voltage that is changed is fed back to the signal acquisition terminal P2 of the crosstalk suppression module 20 through the second end of the first capacitor C1, and is coupled to the coupling analog signal Vcom_CF on the common electrode line L_vcom through the coupling capacitor (that is, the third capacitor C3).

[0045] It should be noted that the first capacitor C1 can be understood as a liquid crystal capacitor of the thin film transistor T1, and the second capacitor C2 can be understood as a storage capacitor.

[0046] Figure 6 The L_gate_signal shown in (b) can be understood as the pixel display voltage of the data line L_data, where: Figure 6 The grid rectangles shown are red pixel voltages, the shaded rectangles are black pixel voltages, the vertical line rectangles are blue pixel voltages, and the diagonal line rectangles are green pixel voltages.

[0047] Further, in some feasible embodiments, referring to Figure 6 , the liquid crystal display panel includes a third capacitor C3; the third capacitor C3 is electrically connected between the common electrode line L_vcom and the data line L_data, and the common electrode line L_vcom and the data line L_data are arranged to intersect vertically.

[0048] In this embodiment, the third capacitor C3 represents the coupling capacitor between the common electrode line L_vcom and the data line L_data. Figure 6 The coupling capacitor (i.e., the third capacitor C3) shown in (a) will cause the Vcom voltage on the common electrode line L_vcom to follow Figure 6 (b) The Vcom fluctuation direction fluctuates, showing Figure 6(b) shows the signal waveform of L_vcom_signal, which leads to the instability of the Vcom voltage on the common electrode line L_vcom. After the first end of the first capacitor C1 detects that the first path end of the thin film transistor T1 is connected to the pixel display voltage, the second end of the first capacitor C1 is electrically connected to the in-plane wiring L_m to the signal acquisition end P2 of the crosstalk suppression module 20 to feed back the changed pixel display voltage in real time through the coupling capacitor (i.e., the third capacitor C3) to couple to the coupling analog signal Vcom_CF on the common electrode line L_vcom.

[0049] In summary, the present application introduces the feedback network of the Vcom voltage (i.e., the voltage feedback terminal P1) to the PCBA (Printed Circuit Board Assembly, i.e., the circuit assembly board 200) through the in-plane wiring L_m, and converts the coupling analog signal Vcom_CF (i.e., the Vcom analog signal) into a coupling digital signal (i.e., the coupling digital quantity corresponding to each signal setting state) through the analog-to-digital conversion unit 201 (i.e., the A / D converter) on the PCBA through high-speed ACD acquisition, and the timing control unit 202 (i.e., the TCON IC) determines whether the coupling digital quantity of the Vcom voltage is the smallest by identifying the size of the converted coupling digital signal, and sets the best POLC signal for each COF according to the coupling digital quantity with the smallest Vcom voltage value, so that the fluctuation of the Vcom voltage has the least effect on the display screen of the liquid crystal display panel, thereby effectively avoiding the generation of horizontal crosstalk stripes and significantly improving the display quality of the liquid crystal display panel.

[0050] Furthermore, based on the first embodiment of the liquid crystal display panel of the present application, a second embodiment of the crosstalk suppression method of the liquid crystal display panel of the present application is proposed.

[0051] The crosstalk suppression method of the liquid crystal display panel of the present application is applied to any of the above-mentioned liquid crystal display panels. The crosstalk suppression method of the liquid crystal display panel of the present application is executed by a terminal device that suppresses the horizontal crosstalk phenomenon of the liquid crystal display panel. The crosstalk suppression method of the liquid crystal display panel of the present application includes the following implementation steps S10 to S20.

[0052] Step S10: When the pixel driving module 10 is driven by the gate driving signal and connected to the pixel display voltage of the data line L_data for pixel charging, the signal acquisition terminal P2 of the crosstalk suppression module 20 is connected to the voltage feedback terminal P1 of the pixel driving module 10 to send a coupling analog signal Vcom_CF between the common electrode line L_vcom electrically connected to the pixel driving module 10 and the data line L_data.

[0053] In this embodiment, since there is a coupling capacitor between the data line L_data and the common electrode line L_vcom, when the pixel display voltage of the data line L_data changes, the changed pixel display voltage is coupled to the common electrode line L_vcom through the coupling capacitor, thereby causing the Vcom voltage on the common electrode line L_vcom to be unstable. The present application introduces the voltage feedback terminal P1 of the pixel driving module 10 disposed in the surface of the liquid crystal display panel into the circuit assembly board 200 through the in-plane wiring L_m, thereby establishing an electrical connection with the signal acquisition terminal P2 of the crosstalk suppression module 20 on the circuit assembly board 200; next, when the pixel driving module 10 is driven by the gate driving signal to access the pixel display voltage of the data line L_data for pixel charging, the coupling analog signal Vcom_CF between the common electrode line L_vcom and the data line L_data is collected through the voltage feedback terminal P1 of the pixel driving module 10, and the coupling analog signal Vcom_CF is transmitted to the signal acquisition terminal P2 of the crosstalk suppression module 20 via the in-plane wiring L_m.

[0054] Step S20 : ​​determining a minimum coupling value according to the coupling simulation signal Vcom_CF, and outputting the minimum coupling value as the optimal value of the signal polarity of the thin-film chip module 30 to the signal polarity terminal P4 .

[0055] In the present embodiment, after the crosstalk suppression module 20 receives the coupling analog signal Vcom_CF fed back by the voltage feedback terminal P1 via the signal acquisition terminal P2, the analog-to-digital conversion unit 201 in the crosstalk suppression module 20 converts the coupling analog signal Vcom_CF into a coupling digital quantity corresponding to each signal setting state configured by the thin film chip module 30; next, the timing control unit 202 in the crosstalk suppression module 20 compares the magnitudes of the coupling digital quantities to take the coupling digital quantity with the smallest value among the multiple coupling digital quantities as the minimum coupling value to reflect the minimum influence of the coupling capacitor on the Vcom voltage; next, the minimum coupling value is set to the optimal value of the signal polarity of the thin film chip module 30 and then output to the signal polarity terminal P4 of the thin film chip module 30, thereby suppressing the influence of the coupling capacitor on the Vcom voltage, achieving the stability of the Vcom voltage, effectively avoiding the horizontal crosstalk phenomenon caused by the coupling capacitor between the data line L_data and the common electrode line L_vcom, and significantly improving the display quality of the liquid crystal display panel.

[0056] Furthermore, in some other feasible embodiments, the above step S20: determining the minimum coupling value according to the coupling analog signal Vcom_CF, may also include the following implementation steps S201 to S202.

[0057] Step S201 : determining a plurality of signal setting states of the thin film chip module 30 , and converting the coupling analog signal Vcom_CF into a coupling digital quantity corresponding to each of the signal setting states through the analog-to-digital conversion unit 201 .

[0058] In this embodiment, multiple signal setting states of the thin-film chip module 30 are determined, and the coupling analog signal Vcom_CF is converted into a coupling digital quantity corresponding to each signal setting state through the analog-to-digital conversion unit 201, so as to realize high-speed acquisition and conversion of the coupling analog signal Vcom_CF output by the voltage feedback terminal P1, thereby effectively avoiding the RC delay problem caused by the VCOM compensation signal passing through the in-plane wiring L_m in the traditional method, and reducing the loss and interference of the signal during the transmission process.

[0059] In a specific embodiment, when the number of modules of the thin film chip module 30 is 1, there are two signal setting states of the thin film chip module 30, namely, a "0" signal state and a "1" signal state. The "0" signal state can be represented by [POLC1]=[0], and the "1" signal state can be represented by [POLC1]=[1], wherein [POLC1] represents the thin film chip module 30 with identification number 1. When the number of thin film chip modules 30 is 2, there are 4 signal setting states for each thin film chip module 30, namely, "00" signal state, "01" signal state, "10" signal state and "11" signal state, "00" signal state can be represented by [POLC12]=

[00] , "01" signal state can be represented by [POLC12]=

[01] , "10" signal state can be represented by [POLC12]=

[10] , and "11" signal state can be represented by [POLC12]=

[11] , where [POLC12] represents the thin film chip module 30 with identification number 1 and the thin film chip module 30 with identification number 2. That is, the number of signal setting states is 2. n , wherein n is the number of thin film chip modules 30 .

[0060] Step S202: searching for a coupling digital quantity with the smallest value from the plurality of coupling digital quantities, and taking the coupling digital quantity with the smallest value as the minimum coupling value.

[0061] In the present embodiment, for each thin-film chip module 30, the timing control unit 202 compares the coupling digital quantities corresponding to the thin-film chip module 30 in different signal setting states, so that the coupling digital quantity with the smallest value (i.e., the minimum coupling value) can be accurately found, and the optimal POLC signal (i.e., the optimal signal polarity value) of each thin-film chip module 30 in the signal setting state (i.e., the target signal state) corresponding to the minimum coupling value is set by the minimum coupling value, thereby realizing the optimization of the Vcom voltage of each display screen in the liquid crystal display panel, so that the fluctuation of the Vcom voltage in the target signal state has the least effect on the display screen, thereby effectively avoiding the generation of horizontal crosstalk stripes and significantly improving the display quality of the liquid crystal display panel.

[0062] In a specific embodiment, the POLC signal of each thin film chip module 30 can be understood as an input control signal, which can control the output polarity of the corresponding thin film chip module 30. The present application electrically connects the signal polarity end P4 of each thin film chip module 30 to the universal signal end P3 (i.e., GPIO port) of the timing control unit 202 through hardware settings. Specifically, the signal polarity end P4-1 of the thin film chip module 30-1, the signal polarity end P4-2 of the thin film chip module 30-2, the signal polarity end P4-3 of the thin film chip module 30-3, the signal polarity end P4-4 of the thin film chip module 30-4, the signal polarity end P4-5 of the thin film chip module 30-5, and the signal polarity end P4-6 of the thin film chip module 30-6 are electrically connected to the universal signal end P3 (i.e., GPIO port) of the timing control unit 202, so that the timing control unit 202 automatically records. Figure 4 or Figure 5The coupling digital quantity of the Vcom voltage under different signal setting states [POLC1...6] of the thin film chip module 30-1 to the thin film chip module 30-6 shown in the figure, for example, under the signal setting state [POLC1...6]=[0...0], the coupling digital quantity corresponding to the Vcom analog signal (i.e., the coupling analog signal Vcom_CF) is recorded as Vcom1, and under the signal setting state [POLC1...6]=[0...1], the coupling digital quantity corresponding to the Vcom analog signal is recorded as Vcom2; under the signal setting state [POLC1...6]=[1...0], the coupling digital quantity corresponding to the Vcom analog signal is recorded as Vcom2. The size is Vcomx. After collecting them in sequence, the coupling digital quantities corresponding to the Vcom analog signal under different signal setting states are collected, and the [POLC1...6] signal setting state corresponding to the coupling digital quantity with the smallest value (that is, the minimum coupling value) is found. The setting value of the [POLC1...6] signal setting state corresponding to the COF position output by the timing control unit 202 is the minimum coupling value, thereby suppressing the influence of the coupling capacitance on the Vcom voltage, achieving the stability of the Vcom voltage, and effectively avoiding the horizontal crosstalk phenomenon caused by the coupling capacitance between the data line L_data and the common electrode line L_vcom, thereby significantly improving the display quality of the liquid crystal display panel.

[0063] In addition, the present application also provides a display device. Figure 7 , Figure 7 The structure diagram of the display device involved in the embodiment of the present application is shown in FIG. The display device in the embodiment of the present application may be a device for locally running the crosstalk suppression method of the liquid crystal display panel.

[0064] like Figure 7 As shown, the display device of the embodiment of the present application may include: the above-mentioned liquid crystal display panel; or, a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wi-Fi interface).

[0065] The memory 1005 is arranged on the display device body, and a program is stored in the memory 1005, and the program implements the corresponding operation when it is executed by the processor 1001. The memory 1005 is also used to store parameters for use by the display device. The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0066] Those skilled in the art will understand that Figure 7 The display device structure shown in the figure does not constitute a limitation on the display device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0067] like Figure 7 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a crosstalk suppression program for a liquid crystal display panel of a display device.

[0068] exist Figure 7 In the display device shown, the processor 1001 can be used to call the crosstalk suppression program of the liquid crystal display panel of the display device stored in the memory 1005, and execute the steps of the display screen control method as described above.

[0069] In addition, to achieve the above-mentioned purpose, the present application also provides a storage medium, which is a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned crosstalk suppression method of the liquid crystal display panel are implemented.

[0070] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0071] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0072] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM, a magnetic disk, or an optical disk as described above, and includes a number of instructions for enabling a display device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0073] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A liquid crystal display panel, characterized in that: The liquid crystal display panel includes a pixel driving module, a crosstalk suppression module and a thin film chip module; The voltage feedback terminal of the pixel driving module is electrically connected to the signal acquisition terminal of the crosstalk suppression module, and the universal signal terminal of the crosstalk suppression module is electrically connected to the signal polarity terminal of the thin film chip module; The crosstalk suppression module is configured to, when the pixel driving module is driven by a gate driving signal and is connected to the pixel display voltage of the data line for pixel charging, connect the coupling analog signal between the common electrode line electrically connected to the pixel driving module and the data line sent by the voltage feedback end through the signal acquisition end, determine the minimum coupling value based on the coupling analog signal, and output the minimum coupling value as the optimal value of the signal polarity of the thin film chip module to the signal polarity end.

2. The liquid crystal display panel according to claim 1, wherein: The liquid crystal display panel comprises: in-plane wiring, a display substrate and a circuit assembly board; The in-plane wiring connects the voltage feedback end of the pixel driving module and the circuit assembly board, and the in-plane wiring is configured to transmit the coupled analog signal from the voltage feedback end to the crosstalk suppression module disposed on the circuit assembly board; The in-plane wiring and the pixel driving module are both arranged in the display substrate. The side of the display substrate close to the circuit assembly board is a flexible circuit board layer. The thin film chip module is electrically connected between the flexible circuit board layer and the circuit assembly board.

3. The liquid crystal display panel according to claim 2, wherein: The crosstalk suppression module includes an analog-to-digital conversion unit and a timing control unit; The signal input end of the analog-to-digital conversion unit constitutes the signal acquisition end of the crosstalk suppression module, and is electrically connected to the voltage feedback end of the pixel driving module through the in-plane wiring; The signal output terminal of the analog-to-digital conversion unit is electrically connected to the feedback receiving terminal of the timing control unit; The data signal terminal of the timing control unit constitutes the common signal terminal of the crosstalk suppression module and is electrically connected to the signal polarity terminal of the thin film chip module.

4. The liquid crystal display panel according to claim 1, wherein: The liquid crystal display panel includes gate lines; The gate driving end of the pixel driving module is electrically connected to the gate line, the data access end of the pixel driving module is electrically connected to the data line, and the data output end of the pixel driving module is electrically connected to the common electrode line; The pixel driving module is configured to access the gate driving signal sent by the gate line through the gate driving end, access the pixel display voltage sent by the data line through the signal input end under the drive of the gate driving signal, and then transfer the pixel display voltage to the common electrode line through the data output end for pixel charging.

5. The liquid crystal display panel according to claim 4, wherein: The pixel driving module includes a thin film transistor, a first capacitor and a second capacitor; The control end of the thin film transistor constitutes the gate driving end of the pixel driving module and is electrically connected to the gate line, and the first channel end of the thin film transistor constitutes the data access end of the pixel driving module and is electrically connected to the data line; The second channel end of the thin film transistor constitutes the data output end of the pixel driving module and is electrically connected to the first end of the first capacitor and the first end of the second capacitor respectively, and the second end of the second capacitor is electrically connected to the common electrode line; The second end of the first capacitor constitutes a voltage feedback end of the pixel driving module and is electrically connected to a signal collection end of the crosstalk suppression module.

6. The liquid crystal display panel according to claim 1, wherein: The liquid crystal display panel includes a third capacitor; The third capacitor is electrically connected between the common electrode line and the data line, and the common electrode line and the data line are arranged to intersect each other perpendicularly.

7. A method for suppressing crosstalk of a liquid crystal display panel, characterized in that: The crosstalk suppression method of the liquid crystal display panel is applied to the liquid crystal display panel according to any one of claims 1 to 6, and the crosstalk suppression method of the liquid crystal display panel comprises: When the pixel driving module is driven by the gate driving signal and connected to the pixel display voltage of the data line for pixel charging, the signal acquisition end of the crosstalk suppression module is connected to the coupling analog signal between the common electrode line electrically connected to the pixel driving module and the data line sent from the voltage feedback end of the pixel driving module; A minimum coupling value is determined according to the coupling simulation signal, and the minimum coupling value is output to the signal polarity end as an optimal value of the signal polarity of the thin film chip module.

8. The method for suppressing crosstalk of a liquid crystal display panel according to claim 7, wherein: The step of determining the minimum coupling value according to the coupling simulation signal comprises: Determine a plurality of signal setting states of the thin film chip module, and convert the coupling analog signal into a coupling digital quantity corresponding to each of the signal setting states through an analog-to-digital conversion unit; A coupling digital quantity with the smallest value is found from the plurality of coupling digital quantities, and the coupling digital quantity with the smallest value is used as the minimum coupling value.

9. A display device, characterized in that: The display device comprises the liquid crystal display panel according to claims 1 to 6; or, The display device includes a processor, a memory, and a crosstalk suppression program for a liquid crystal display panel stored in the memory and executable by the processor, wherein when the crosstalk suppression program for the liquid crystal display panel is executed by the processor, the steps of the crosstalk suppression method for a liquid crystal display panel as described in any one of claims 7 to 8 are implemented.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for suppressing crosstalk of a liquid crystal display panel as described in any one of claims 7 to 8 are implemented.

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