Display panel and driving method thereof, and display device

Abstract

The present application provides a display panel and a driving method thereof, and a display device, wherein the display panel comprises: a plurality of pixel units; each data line is electrically connected to a column of pixel units; a source driving module is electrically connected to a plurality of data lines and outputs data signals to the data lines; each scanning line is electrically connected to a row of pixel units and inputs scanning signals to the pixel units; a gate driving module comprises a plurality of gate driving units and a plurality of voltage dividing units, one gate driving unit is electrically connected to a voltage dividing unit and a scanning line, the gate driving unit outputs a driving signal to the voltage dividing unit to form a scanning signal, and in the direction away from the source driving module, the scanning signal voltages in the plurality of scanning lines are sequentially increased. This makes the degree of transistor opening in each row of pixel units sequentially increased, and can compensate for the insufficient charging of the pixel units caused by the decrease of the data signal voltage as the distance from the source driving module increases, so that the luminous brightness of each row of pixel units is similar, and the overall display brightness uniformity is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a driving method thereof, and a display device. Background Art

[0002] In the display panel of the related technology, when the data line transmits the data signal to the pixel unit for charging, the data line overlaps with the gate scanning line and the common electrode to form a capacitor. In addition, the data line itself has an internal resistance, resulting in a larger voltage drop at the end of the data line away from the source driver module, causing uneven charging of the pixel units at both ends of the data line, resulting in uneven display brightness of the display panel. Summary of the invention

[0003] The purpose of the present application is to provide a display panel and a driving method thereof, and a display device, so as to solve the technical problem of uneven display brightness caused by voltage drop of data lines in the display panel of the related art.

[0004] In a first aspect, the present application provides a display panel, comprising:

[0005] A plurality of pixel units, wherein the plurality of pixel units are distributed in an array;

[0006] A plurality of data lines, each of the data lines being electrically connected to a plurality of the pixel units in a column;

[0007] A source driving module, the source driving module is electrically connected to a plurality of data lines, and the source driving module is configured to output data signals to the plurality of data lines;

[0008] a plurality of scan lines, each of which is electrically connected to a row of the plurality of pixel units and is used to input a scan signal to the pixel units; and

[0009] A gate driving module, wherein the gate driving module is electrically connected to the plurality of scanning lines, and the gate driving module is configured to output scanning signals to the scanning lines, wherein in a direction away from the source driving module, the voltages of the scanning signals in the plurality of scanning lines are sequentially increased, and the gate driving module comprises a plurality of gate driving units and a plurality of voltage dividing units, wherein one gate driving unit is electrically connected to one voltage dividing unit and one scanning line, and the gate driving unit is configured to output a driving signal to the voltage dividing unit, and the driving signal forms the scanning signal after passing through the voltage dividing unit.

[0010] In the display panel provided by the present application, a plurality of pixel units are distributed in an array, a source driving module is electrically connected to a plurality of data lines, the source driving module is configured to output data signals to the plurality of data lines, a gate driving module is electrically connected to a plurality of scanning lines, and the gate driving module is configured to output scanning signals to the scanning lines, wherein, in the direction away from the source driving module, the voltage of the scanning signal in the plurality of scanning lines is sequentially increased. In the direction away from the source driving module, the voltage of the scanning signal in the plurality of scanning lines is sequentially increased, so that the opening degree and charging rate of the driving transistor in each row of pixel units can be sequentially increased, and the insufficient charging of the pixel units caused by the decrease in the voltage of the data signal as the distance from the source driving module increases can be compensated, so that the charging effect and the luminous brightness of the pixel units in each row are similar or the same, so as to improve the uniformity of the luminous brightness of the overall display panel. In addition, each voltage dividing unit is electrically connected to a scanning line, and the voltage dividing unit can be used to divide the voltage, so as to adjust the voltage of the scanned signal on each scanning line.

[0011] Wherein, the gate driving module includes multiple gate driving units and multiple voltage dividing units, one of the gate driving units is electrically connected to one of the voltage dividing units and one of the scanning lines, and the gate driving unit is configured to output a driving signal to the voltage dividing unit, and the driving signal forms the scanning signal after passing through the voltage dividing unit, wherein the driving signals output by the multiple gate driving units are the same, and in the direction away from the source driving module, the voltages carried by the multiple voltage dividing units decrease successively.

[0012] Wherein, the voltage dividing unit includes a voltage dividing transistor, and the display panel also includes a voltage dividing control line. The control end of the voltage dividing transistor is electrically connected to the voltage dividing control line, the first end of the voltage dividing transistor is electrically connected to the gate driving unit, and the second end of the voltage dividing transistor is electrically connected to the scan line. The voltage dividing control line is used to output multiple voltage dividing signals to the multiple voltage dividing transistors, so that the voltages carried by the multiple voltage dividing transistors are reduced in sequence in the direction away from the source driving module.

[0013] Among them, the display panel also includes a detection module and a controller. The detection module is arranged at one end of the display panel away from the source driving module, and the detection module is electrically connected to multiple data lines. The detection module is used to receive the data signal in the data line. The controller is electrically connected to the detection module and generates the voltage division signal according to the data signal received by the detection module and outputs it to the voltage division control line.

[0014] The gate driving module includes a plurality of first driving units and a plurality of second driving units, the first driving units and the second driving units are respectively arranged at two ends of the display panel, and the first driving units and the second driving units are electrically connected to different scanning lines.

[0015] The gate driving module includes a plurality of first driving units and a plurality of second driving units, the first driving units and the second driving units are respectively arranged at two ends of the display panel, and the first driving units and the second driving units are electrically connected to the same scan line.

[0016] In a second aspect, the present application provides a display panel driving method for driving the display panel, the display panel driving method comprising:

[0017] In a direction away from the source driving module, the voltages of the scanning signals in the plurality of scanning lines are sequentially increased.

[0018] In the display panel driving method provided by the present application, in the direction away from the source driving module, the voltages of the scanning signals in the multiple scanning lines are increased successively, so that the opening degree and the charging rate of the driving transistor in each row of pixel units can be increased successively, and the insufficient charging of the pixel units caused by the decrease in the voltage of the data signal as the distance from the source driving module increases can be compensated, so that the charging effect and the luminous brightness of the pixel units in each row are similar or the same, so as to improve the uniformity of the luminous brightness of the overall display panel.

[0019] The step of sequentially increasing the voltages of the scan signals in the plurality of scan lines in a direction away from the source driving module comprises:

[0020] Acquire a voltage drop at both ends of a data line, and determine a driving signal voltage of a plurality of gate driving units according to the voltage drop of the data line and a preset signal voltage;

[0021] In a direction away from the source driving module, a voltage drop is generated between the plurality of gate driving units and the plurality of scanning lines and decreases in sequence, so that the voltage of the scanning signal in the plurality of scanning lines increases in sequence.

[0022] Wherein, obtaining the voltage drop at both ends of the data line includes:

[0023] Receiving a data signal of an end of the data line away from the source driving module through a detection module;

[0024] The voltage drop of the data line is determined according to the data signal sent by the source driving module and the data signal received by the detection module.

[0025] In a third aspect, the present application provides a display device, comprising a housing and the display panel, wherein the housing is used to accommodate the display panel.

[0026] In the display device provided by the present application, the voltages of the scan signals in the plurality of scan lines in the display panel are sequentially increased in the direction away from the source driving module, so that the opening degree and the charging rate of the driving transistor in each row of pixel units can be sequentially increased, and the insufficient charging of the pixel units that may be caused by the decrease in the voltage of the data signal as the distance from the source driving module increases can be compensated, so that the charging effect and the luminous brightness of the pixel units in each row are similar or the same, so as to improve the uniformity of the luminous brightness of the overall display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of a circuit structure of a display panel provided in an embodiment of the present application;

[0029] Figure 2 A gate driving module provided in the embodiment of the present application includes a circuit structure schematic diagram of a gate driving unit Figure 1 ;

[0030] Figure 3 is a circuit structure diagram of a display panel including a detection module provided in an embodiment of the present application;

[0031] Figure 4 It is a schematic diagram of a circuit structure of a display panel in a staggered mode provided by an embodiment of the present application;

[0032] Figure 5 It is a schematic diagram of a circuit structure of a display panel in a hedging mode provided in an embodiment of the present application;

[0033] Figure 6 is a flow chart of a display panel driving method provided in an embodiment of the present application;

[0034] Figure 7 is a flow chart included in a display panel driving method S100 provided in an embodiment of the present application;

[0035] Figure 8 A gate driving module provided in the embodiment of the present application includes a circuit structure schematic diagram of a gate driving unit Figure 2 ;

[0036] Fig. 9 is a schematic diagram of scan signal voltages of multiple scan lines provided in an embodiment of the present application;

[0037] Fig.10 is a flow chart included in a display panel driving method S110 provided in an embodiment of the present application;

[0038] Fig.11 It is a structural diagram of a display device provided in an embodiment of the present application.

[0039] Description of labels:

[0040] Display panel-100, data line-10, source driving module-20, scanning line-30, gate driving module-40, gate driving unit-41, first driving unit-411, second driving unit-412, voltage dividing unit-42, detection module-50, voltage dividing control line-60, controller-70, display device-1000, shell-200. DETAILED DESCRIPTION

[0041] 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.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the orientation of the constituent elements being described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the circumstances.

[0044] In this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in this disclosure can be understood according to the circumstances.

[0045] In the display panel of the related technology, when the data line transmits the data signal to the pixel unit for charging, the data line overlaps with the gate scanning line and the common electrode to form a capacitor. In addition, the data line itself has an internal resistance, resulting in a larger voltage drop at the end of the data line away from the source driver module, causing uneven charging of the pixel units at both ends of the data line, resulting in uneven display brightness of the display panel.

[0046] The gate drive module of the LCD uses an efficient and accurate scanning method, that is, line-by-line scanning, to ensure that each operation is performed accurately on a row of pixel units. The gate drive module is closely connected to the gate terminal (Gate) of the pixel unit and can be used to control the thin film transistor switches of each row of pixel units. During the scanning process, the gate drive module will activate the thin film transistors of an entire row of pixels at one time to ensure the synchronous response of the pixels in that row.

[0047] When the thin film transistor switch is turned on, the source driver module can accurately transmit the control voltage for controlling brightness, grayscale and color to each pixel unit of the display panel line by line through the stable channel formed between the source terminal (Source) and the drain terminal (Drain) of the thin film transistor. However, in this process, due to the overlap between the data line, the gate scanning line and the common electrode to form a capacitor, and the internal resistance of the data line itself, the voltage drop at the end of the data line far from the source driver module is large, so that the pixel unit close to the source driver module can be charged more fully, while the charging effect of the pixel unit far from the source driver module is gradually weakened, and the pixel units at both ends of the data line are not charged evenly.

[0048] In the relevant display technologies, the above problems exist in LCD display panels, OLED display panels and other display panels. The charging difference caused by the uneven data line load directly affects the brightness uniformity of the display panel, so that users may notice the inconsistency of the screen brightness when watching, thus affecting the overall visual experience. Therefore, how to solve this problem and ensure the brightness uniformity of the display panel has become a technical problem that needs to be solved urgently in the current display technology field.

[0049] Please refer to Figure 1 and Figure 2 , Figure 1is a schematic diagram of a circuit structure of a display panel provided in an embodiment of the present application, Figure 2 A gate driving module provided in the embodiment of the present application includes a circuit structure schematic diagram of a gate driving unit Figure 1 The purpose of the present application is to provide a display panel 100 to solve the technical problem of uneven display brightness caused by the voltage drop of the data line in the display panel of the related art.

[0050] The display panel 100 includes a plurality of pixel units, a plurality of data lines 10 , a source driving module 20 , a plurality of scan lines 30 and a gate driving module 40 .

[0051] The plurality of pixel units are distributed in an array. Specifically, the plurality of pixel units are arranged in the array according to a strict layout rule, thereby ensuring the uniformity and accuracy of the display effect of the display panel 100 .

[0052] Each of the data lines 10 is electrically connected to a plurality of the pixel units in a column. The source driver module 20 is electrically connected to a plurality of data lines 10, and the source driver module 20 is configured to output data signals to the plurality of data lines 10. The source driver module 20 is connected to all data lines 10 as an output hub of data signals, and its function is to accurately distribute data signals to each of the data lines 10 connected thereto. It should be noted that, in the present embodiment, the source driver module 20 is disposed in a driver integrated circuit (driver IC). In other embodiments, the source driver module 20 may also be designed separately from the driver IC, which should not be construed as a limitation to the present application.

[0053] It should be noted that, since the data line 10 overlaps with the scan line 30 and the common electrode to form a capacitor, and the data line 10 itself has internal resistance, the data signal on the data line 10 will have a voltage drop phenomenon. When the source driver module 20 outputs a data signal to the data line 10, the voltage of the data signal close to the source driver module 20 is larger, and the voltage of the data signal decreases as the distance from the source driver module 20 increases, so that the voltage of the data signal in the same data line 10 is lower at a location far from the source driver module 20 than at a location close to the source driver module 20. In other words, in the direction away from the source driver module 20, the data voltage in the data line 10 decreases sequentially.

[0054] Each of the scan lines 30 is electrically connected to a row of a plurality of pixel units and is used to input a scan signal to the pixel unit. The gate driving module 40 is electrically connected to a plurality of the scan lines 30 and is configured to output a scan signal to the scan lines 30, wherein in a direction away from the source driving module 20, the voltage of the scan signal in the plurality of scan lines 30 increases sequentially.

[0055] When the driving transistor in the pixel unit is in the on state, the increase in the scanning voltage will cause the on-state current in the driving transistor, thereby increasing the charging rate of the pixel unit. In other words, in the same time, the pixel unit can better write the data signal. In the direction away from the source driving module 20, the voltage of the scanning signal in the plurality of scanning lines 30 increases successively. In other words, in the direction away from the source driving module 20, the degree of opening of the driving transistor in the pixel unit increases successively, that is, the charging rate of the pixel unit increases successively.

[0056] The voltage of the scanning signal increases as the distance from the source driving module 20 increases, which can compensate for the insufficient charging of the pixel unit caused by the decrease in the voltage of the data signal as the distance from the source driving module 20 increases, so that the charging effect of the pixel unit far away from the source driving module 20 is similar to the charging effect of the pixel unit close to the source driving module 20, thereby making the luminous brightness of the pixel unit far away from the source driving module 20 and the luminous brightness of the pixel unit close to the source driving module 20 similar, thereby improving the display brightness uniformity of the display panel 100. In addition, it should be noted that in this embodiment, in the direction away from the source driving module 20, the voltage of the scanning signal in the plurality of scanning lines 30 is increased sequentially, so that the gate driving voltage of each row of the pixel unit can be increased sequentially, so that the opening degree and charging rate of the driving transistor in each row of the pixel unit are increased sequentially, so that the charging effect and luminous brightness of the pixel unit in each row are similar or the same, so as to improve the luminous brightness uniformity of the overall display panel 100.

[0057] Further, the gate driving module 40 includes a plurality of gate driving units 41 and a plurality of voltage dividing units 42. The number of the gate driving units 41, the voltage dividing units 42, and the number of the scanning lines 30 correspond to each other. In other words, one gate driving unit 41 is electrically connected to one voltage dividing unit 42 and one scanning line 30. The gate driving unit 41 is configured to output a driving signal to the voltage dividing unit 42, and the driving signal forms the scanning signal after passing through the voltage dividing unit 42.

[0058] In the display panel 100 provided in the present application, a plurality of pixel units are distributed in an array, the source driving module 20 is electrically connected to a plurality of data lines 10, the source driving module 20 is configured to output data signals to the plurality of data lines 10, the gate driving module 40 is electrically connected to a plurality of scan lines 30, the gate driving module 40 is configured to output scan signals to the scan lines 30, wherein, in the direction away from the source driving module 20, the voltages of the scan signals in the plurality of scan lines 30 are sequentially increased. In the direction away from the source driving module 20, the voltages of the scan signals in the plurality of scan lines 30 are sequentially increased, so that the opening degree and charging rate of the driving transistors in each row of the pixel units are sequentially increased, and the insufficient charging of the pixel units caused by the decrease in the voltage of the data signal as the distance from the source driving module 20 increases can be compensated, so that the charging effect and the luminous brightness of the pixel units in each row are similar or the same, so as to improve the luminous brightness uniformity of the overall display panel 100.

[0059] Furthermore, each of the voltage dividing units 42 is electrically connected to one of the scan lines 30 , and the voltage dividing unit 42 can be used to perform voltage division, so as to adjust the voltage of the scanned signal on each of the scan lines 30 .

[0060] In this embodiment, the driving signals output by the multiple gate driving units 41 are the same, and in the direction away from the source driving module 20, the voltages carried by the multiple voltage divider units 42 decrease successively, so that the scanning signal voltage on the scanning line 30 increases successively.

[0061] It should be noted that, in the present embodiment, the gate driving module 40 includes a plurality of the gate driving units 41 and a plurality of voltage dividing units 42. In other embodiments, the gate driving module 40 may also include only a plurality of the gate driving units 41, and the driving signals output by the plurality of the gate driving units 41 are scanning signals. In other words, the plurality of the gate driving units 41 directly output scanning signals to the plurality of scanning lines 30. The above also belongs to the embodiments of the present application and should not be understood as limitations on the present application.

[0062] Please refer to Figure 1 and Figure 2In one embodiment, the voltage dividing unit 42 includes a voltage dividing transistor, and the display panel 100 also includes a voltage dividing control line 60. The control end of the voltage dividing transistor is electrically connected to the voltage dividing control line 60, the first end of the voltage dividing transistor is electrically connected to the gate driving unit 41, and the second end of the voltage dividing transistor is electrically connected to the scanning line 30. Optionally, in this embodiment, the first end of the voltage dividing transistor is the source end, and the second end of the voltage dividing transistor is the drain end. In other embodiments, the first end of the voltage dividing transistor may be the drain end, and the second end of the voltage dividing transistor may be the source end. This application does not limit this. Further optionally, in this embodiment, the voltage dividing transistor includes but is not limited to an NMOS transistor or a PMOS transistor. When the type of the display panel 100 is an LCD display panel, the voltage dividing transistor is an NMOS transistor. When the type of the display panel 100 is an OLED display panel, the voltage dividing transistor is a PMOS transistor. This application does not limit this.

[0063] The voltage division control line 60 is used to output a plurality of voltage division signals to the plurality of voltage division transistors, so that the voltages carried by the plurality of voltage division transistors decrease in sequence in a direction away from the source driving module 20 .

[0064] The voltage-dividing control line 60 is used to output multiple voltage-dividing signals to the multiple voltage-dividing transistors. It should be noted that the principle here is the same as the above, that is, according to the difference in gate drive signals of the multiple voltage-dividing transistors, the opening degrees of the multiple voltage-dividing transistors are different, thereby controlling the different scanning signals output from the source driving module 20 to the multiple scanning lines 30. Specifically, the voltage-dividing control line 60 is used to output multiple voltage-dividing signals to the multiple voltage-dividing transistors, and in the direction away from the source driving module 20, the voltage of the voltage-dividing signal received by the multiple voltage-dividing transistors increases successively, so that the opening degrees of the multiple voltage-dividing transistors increase successively, so that the voltage of the driving signal carried by the multiple voltage-dividing transistors decreases successively, thereby causing the scanning signals of the multiple scanning lines 30 to increase successively.

[0065] It should be noted that the number of outputs of the voltage-divided signal in one frame is the same as the number of rows of the pixel units. In other words, each time the gate driving module 40 outputs a driving signal, the voltage-divided signal also needs to be output once.

[0066] It should be noted that, in this embodiment, the voltage divider unit 42 is used as an equivalent resistor according to the conduction characteristics of the transistor. In other embodiments, the voltage divider unit 42 may directly include a resistor, and the present application does not impose any limitation on this.

[0067] It should be noted that the determination of the voltage division signal is related to parameters such as the material properties of the voltage division transistor and the display specifications of the display panel 100 , and should not be construed as a limitation to the present application.

[0068] Please refer to Figure 3 , Figure 3 1 is a schematic diagram of a circuit structure of a display panel including a detection module provided in an embodiment of the present application. In one embodiment, the display panel 100 further includes a detection module 50 and a controller 70. The detection module 50 is arranged at one end of the display panel 100 away from the source driver module 20, and the detection module 50 is electrically connected to a plurality of data lines 10, and the detection module 50 is used to receive the data signal in the data line 10. In other words, one end of the data line 10 is electrically connected to the source driver module 20, and the other end is electrically connected to the detection module 50, and the detection module 50 can be used to receive the data signal in the data line 10 after passing through a plurality of the pixel units. The data signal includes a first signal and a second signal, wherein the first signal is a data signal sent from the source driver module 20, and the second signal is a data signal received by the detection module 50, and the first signal becomes the second signal after passing through a plurality of the pixel units in the data line 10.

[0069] The controller 70 is electrically connected to the detection module 50. The controller 70 can be used to receive the second signal received by the detection module 50, determine the voltage drop value in the data line 10 according to the difference between the second signal and the first signal, and then generate a corresponding voltage division signal to the voltage division control line 60 according to the voltage drop value.

[0070] It should be noted that, in this embodiment, the controller 70 and the source driver module 20 are arranged in the same circuit board or chip. Figure 2 and Figure 3 It should not be understood as limiting the present application.

[0071] In one embodiment, the display panel 100 also includes a sensor and a controller 70. The sensor is disposed at one end of the display panel 100 away from the source driver module 20. The sensor is used to detect the brightness of the pixel unit and generate a grayscale signal. The controller 70 is electrically connected to the sensor and the voltage divider control line 60. The controller 70 is used to receive the grayscale signal generated by the sensor and generate the voltage divider signal according to the grayscale signal and output it to the voltage divider control line 60.

[0072] Specifically, the controller 70 can be used to receive the grayscale signal generated by the sensor, calculate the voltage drop in the data line 10 according to the grayscale signal and the preset grayscale, and generate a corresponding voltage division signal according to the value of the voltage drop and output it to the voltage division control line 60. It should be noted that the preset grayscale is the display brightness of the pixel unit during normal display, which is usually the row of pixel units closest to the source driver module 20. Therefore, a sensor can also be correspondingly arranged on the pixel unit closest to the source driver module 20 to detect the brightness of the pixel unit and generate a preset grayscale signal.

[0073] Please refer to Figure 4 , Figure 4 1 is a schematic diagram of a circuit structure of a display panel in a staggered mode provided in an embodiment of the present application. In one embodiment, the display panel 100 is in a staggered display mode. The gate driving module 40 includes a plurality of first driving units 411 and a plurality of second driving units 412, the first driving units 411 and the second driving units 412 are respectively arranged at two ends of the display panel 100, and the first driving units 411 and the second driving units 412 are electrically connected to different scan lines 30.

[0074] Please refer to Figure 5 , Figure 5 1 is a schematic diagram of a circuit structure of a display panel in a hedge mode provided in an embodiment of the present application. In one embodiment, the display panel 100 is in a hedge display mode. The gate driving module 40 includes a plurality of first driving units 411 and a plurality of second driving units 412, the first driving units 411 and the second driving units 412 are respectively arranged at two ends of the display panel 100, and the first driving units 411 and the second driving units 412 are electrically connected to the same scan line 30.

[0075] Please refer to Figure 6 , Figure 6 1 is a flow chart of a display panel driving method provided in an embodiment of the present application. The present application provides a display panel 100 driving method, the display panel 100 driving method is used to drive the display panel 100 described above, the display panel 100 driving method comprises step S100, and step S100 is described in detail as follows.

[0076] S100 : In a direction away from the source driving module 20 , the voltages of the scan signals in the plurality of scan lines 30 are sequentially increased.

[0077] In the display panel 100 driving method provided in the present application, in the direction away from the source driving module 20, the voltages of the scanning signals in the plurality of scanning lines 30 are sequentially increased, so that the opening degree and the charging rate of the driving transistors in each row of the pixel units can be sequentially increased, and the insufficient charging of the pixel units that may be caused by the decrease in the voltage of the data signal as the distance from the source driving module 20 increases can be compensated, so that the charging effect and the luminous brightness of the pixel units in each row are similar or the same, so as to improve the uniformity of the luminous brightness of the overall display panel 100.

[0078] Please refer to Figure 7 , Figure 7 This is a flow chart of a display panel driving method S100 provided in an embodiment of the present application. In one embodiment, in step S100, the voltage of the scanning signal in the plurality of scanning lines 30 is sequentially increased in a direction away from the source driving module 20, including step S110 and step S120, and the detailed description of step S110 and step S120 is as follows.

[0079] S110: Obtaining voltage drops at both ends of the data line 10, and determining driving signal voltages of a plurality of gate driving units 41 according to the voltage drops of the data line 10 and a preset signal voltage.

[0080] For example, the preset signal voltage is: in an ideal state, there is no voltage drop in the data line of the display panel, and at this time, the gate driving module provides a preset signal voltage calculated according to the display brightness required by the display panel. In the present application, the voltage drop at both ends of the data line 10 can be obtained, and the voltage of the driving signal provided by the gate driving unit 41 at one end away from the source driving module 20 can be calculated according to the voltage drop, and under the drive of the driving signal, the luminous brightness of the pixel unit is consistent with the luminous brightness when the gate driving module provides the preset signal voltage, so as to calculate the driving signal voltage provided by the gate driving unit 41 of the present application, that is, the driving signal voltage = preset signal voltage + Y, wherein Y is the voltage value that needs to be increased determined by the voltage drop of the data line 10 of the display panel 100 itself, and should not be understood as a limitation to the present application.

[0081] S120 : In a direction away from the source driving module 20 , the voltage drops between the plurality of gate driving units 41 and the plurality of scanning lines 30 are successively reduced, so that the voltages of the scanning signals in the plurality of scanning lines 30 are successively increased.

[0082] In the direction away from the source driving module 20, the voltage drop between the plurality of gate driving units 41 and the plurality of scanning lines 30 is successively reduced. In other words, the voltage dividing unit 42 is arranged between the plurality of gate driving units 41 and the plurality of scanning lines 30, and the voltage carried by the plurality of voltage dividing units 42 is successively reduced, so that the scanning signal voltage on the scanning line 30 is successively increased.

[0083] like Figure 8 and Fig. 9 As shown, Figure 8 A gate driving module provided in the embodiment of the present application includes a circuit structure schematic diagram of a gate driving unit Figure 2 , Fig. 9 It is a schematic diagram of scanning signal voltages of multiple scanning lines provided in an embodiment of the present application. The present application is illustrated by n gate driving units 41, n voltage dividing units 42 and n scanning lines 30 in the figure. The purpose of setting the voltage dividing signal is to control the gate voltage of the voltage dividing transistor Tn to the voltage dividing transistor T1 to decrease step by step, so that its opening degree decreases step by step, and then its resistance value decreases step by step. Among them, the voltage dividing signal A follows the following formula: An=A1-(n-1)(α / n), (α is the difference between the gate voltages of T1 and Tn, in other words, the voltage difference between the first voltage dividing signal and the last voltage dividing signal, An represents the voltage dividing signal A on the nth voltage dividing unit, and A1 to An correspond to the connections respectively. Figure 8 T1 to Tn in the figure). The voltage difference between the multiple scan lines 30 is B, and B follows the following formula: Bn=B1-(n-1)(Y / n), (Y is the voltage value that needs to be increased determined by the voltage drop of the data line 10 of the display panel 100 itself, and Bn represents the voltage difference between the nth scan line and the scan line closest to the source driver module 20). The scan signal voltage of the scan line 30 is C, and C follows the following formula: Cn=driving signal voltage-Bn, Cn represents the scan signal voltage of the nth scan line, and C1 to Cn correspond to the connection Figure 8 T1 to Tn in, such as Figure 8 As shown, the voltages of C1 to Cn decrease sequentially, which means that in the direction away from the source driving module 20 , the scan signals of the plurality of scan lines 30 increase sequentially.

[0084] Please refer to Fig.10 , Fig.10 This is a flowchart of a display panel driving method S110 provided in an embodiment of the present application. In one embodiment, in the step S110 of obtaining the voltage drop across the two ends of the data line 10, steps S111 and S112 are included. The detailed description of steps S111 and S112 is as follows.

[0085] S111 : receiving a data signal from an end of the data line 10 away from the source driving module 20 through the detection module 50 .

[0086] S112 : determining a voltage drop of the data line 10 according to the data signal sent by the source driving module 20 and the data signal received by the detection module 50 .

[0087] The detection module 50 can be used to receive the data signal after passing through the plurality of pixel units in the data line 10. The data signal includes a first signal and a second signal, wherein the first signal is the data signal sent from the source driving module 20, and the second signal is the data signal received by the detection module 50, and the first signal becomes the second signal after passing through the plurality of pixel units in the data line 10.

[0088] The controller 70 is electrically connected to the detection module 50. The controller 70 can be used to receive the second signal received by the detection module 50, determine the voltage drop value in the data line 10 according to the difference between the second signal and the first signal, and then generate a corresponding voltage division signal to the voltage division control line 60 according to the voltage drop value.

[0089] In one implementation, the step S110 of obtaining the voltage drop at both ends of the data line 10 includes step S113 and step S114. Step S113 and step S114 are described in detail as follows.

[0090] S113: Detecting the brightness of the pixel unit through a sensor and generating a grayscale signal.

[0091] S114: The controller 70 determines the voltage drop of the data line 10 according to the grayscale signal.

[0092] Specifically, the controller 70 can be used to receive the grayscale signal generated by the sensor, calculate the voltage drop in the data line 10 according to the grayscale signal and the preset grayscale, and generate a corresponding voltage division signal according to the value of the voltage drop and output it to the voltage division control line 60. It should be noted that the preset grayscale is the display brightness of the pixel unit during normal display, which is usually the row of pixel units closest to the source driver module 20. Therefore, a sensor can also be correspondingly arranged on the pixel unit closest to the source driver module 20 to detect the brightness of the pixel unit and generate a preset grayscale signal.

[0093] Please refer to Fig.11 , Fig.11 The present application also provides a display device 1000 , which includes a housing 200 and the display panel 100 . The housing 200 is used to store the display panel 100 to protect the display panel 100 .

[0094] Mentioning "embodiment" and "implementation method" in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrases in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of the present application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application, provided that there is no contradiction between them.

[0095] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: A plurality of pixel units, wherein the plurality of pixel units are distributed in an array; A plurality of data lines, each of the data lines being electrically connected to a plurality of the pixel units in a column; A source driving module, the source driving module is electrically connected to a plurality of data lines, and the source driving module is configured to output data signals to the plurality of data lines; A plurality of scanning lines, each of which is electrically connected to a plurality of pixel units in a row and is used to input a scanning signal to the pixel units; as well as A gate driving module, the gate driving module is electrically connected to the plurality of scanning lines, the gate driving module is configured to output a scanning signal to the scanning line, wherein in the direction away from the source driving module, the voltage of the scanning signal in the plurality of scanning lines is sequentially increased, the gate driving module comprises a plurality of gate driving units and a plurality of voltage dividing units, one of the gate driving units is electrically connected to one of the voltage dividing units and one of the scanning lines, the gate driving unit is configured to output a driving signal to the voltage dividing unit, the driving signal forms the scanning signal after passing through the voltage dividing unit, and the plurality of gate driving units The output drive signals are the same, and the voltages carried by the multiple voltage-dividing units are reduced in sequence in the direction away from the source driving module; the voltage-dividing unit includes a voltage-dividing transistor, and the display panel also includes a voltage-dividing control line, the control end of the voltage-dividing transistor is electrically connected to the voltage-dividing control line, the first end of the voltage-dividing transistor is electrically connected to the gate driving unit, and the second end of the voltage-dividing transistor is electrically connected to the scanning line, wherein the voltage-dividing control line is used to output multiple voltage-dividing signals to the multiple voltage-dividing transistors, so that the voltages carried by the multiple voltage-dividing transistors are reduced in sequence in the direction away from the source driving module.

2. The display panel according to claim 1, characterized in that: The display panel also includes a detection module and a controller. The detection module is arranged at one end of the display panel away from the source driving module, and the detection module is electrically connected to multiple data lines. The detection module is used to receive data signals in the data lines. The controller is electrically connected to the detection module and generates the voltage division signal according to the data signal received by the detection module and outputs it to the voltage division control line.

3. The display panel according to claim 1, characterized in that: The plurality of gate driving units include a plurality of first driving units and a plurality of second driving units, the first driving units and the second driving units are respectively disposed at two ends of the display panel, and the first driving units and the second driving units are electrically connected to different scanning lines.

4. The display panel according to claim 1, characterized in that: The plurality of gate driving units include a plurality of first driving units and a plurality of second driving units. The first driving units and the second driving units are respectively disposed at two ends of the display panel, and the first driving units and the second driving units are electrically connected to the same scan line.

5. A display panel driving method, characterized in that: Used to drive the display panel according to any one of claims 1 to 4.

6. The display panel driving method according to claim 5, characterized in that: The step of sequentially increasing the voltages of the scan signals in the plurality of scan lines in a direction away from the source driving module comprises: Acquire a voltage drop at both ends of a data line, and determine a driving signal voltage of a plurality of gate driving units according to the voltage drop of the data line and a preset signal voltage; In a direction away from the source driving module, the voltage drops between the plurality of gate driving units and the plurality of scanning lines are successively reduced, so that the voltages of the scanning signals in the plurality of scanning lines are successively increased.

7. The display panel driving method according to claim 6, characterized in that: The step of obtaining the voltage drop at both ends of the data line includes: Receiving a data signal of an end of the data line away from the source driving module through a detection module; The voltage drop of the data line is determined according to the data signal sent by the source driving module and the data signal received by the detection module.

8. A display device, characterized in that: It comprises a shell and the display panel according to any one of claims 1 to 4, wherein the shell is used to accommodate the display panel.

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