Display panel, driving method and display device

Abstract

The application discloses a display panel, a driving method and a display device, and relates to the technical field of display technology.The display panel comprises a first driving module, a data voltage input module and a plurality of scanning lines and data lines which are arranged in a vertical and horizontal interlaced mode.The scanning lines and the data lines divide a plurality of pixel units.The first driving module is connected with the plurality of pixel units through the scanning lines.The data voltage input module is connected with the plurality of pixel units through the data lines.The display panel further comprises a second driving module and a black insertion voltage input module.The black insertion voltage input module is connected with the second driving module at one end and connected with the pixel units at the other end.The second driving module outputs a control signal to the black insertion voltage input module.The black insertion voltage input module outputs a black insertion voltage to the pixel units according to the control signal.The display panel of the embodiment avoids the occurrence of the situation that a dynamic picture is delayed or RGB color mixing errors occur due to the too slow liquid crystal reaction speed.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel, driving method, and display device. Background Technology

[0002] Traditional thin-film transistor liquid crystal displays (TFT-LCDs) use white backlighting and employ color filters for the R, G, and B colors to achieve color display. Sequential color liquid crystal displays, on the other hand, do not use filters. Instead, they use R, G, and B light sources that emit light sequentially within a frame, utilizing the visual storage phenomenon of the human eye to additively mix the three colors to achieve color display.

[0003] However, the implementation of color sequence liquid crystal display technology is highly dependent on the reaction rate of liquid crystal molecules. Each pixel is made by mixing the three primary colors in a time-sequential cycle to form the required color. The liquid crystal must be able to meet the gamma curve when each color backlight is lit. If the liquid crystal reaction speed is too slow, in addition to causing dynamic picture delay, there is also the possibility of RGB color mixing errors, which affects the stability of color presentation. Summary of the Invention

[0004] The purpose of this application is to provide a display panel, driving method, and display device that avoids dynamic image delay or RGB color mixing errors caused by slow liquid crystal response speed by setting a second driving module and a black voltage input module.

[0005] This application discloses a display panel, including a first driving module, a data voltage input module, and multiple crisscrossing scan lines and data lines. The scan lines and data lines divide the panel into multiple pixel units. The first driving module is connected to the multiple pixel units through the scan lines, and the data voltage input module is connected to the multiple pixel units through the data lines. The display panel also includes a second driving module and a black dot voltage input module. One end of the black dot voltage input module is connected to the second driving module, and the other end is connected to the pixel unit. The second driving module outputs a control signal to the black dot voltage input module, and the black dot voltage input module outputs a black dot voltage to the pixel unit according to the control signal.

[0006] Optionally, the display panel further includes a black bead voltage power supply module. The black bead voltage input module includes multiple first control switches, with one first control switch corresponding to each row of pixel units. The output terminal of the first control switch is connected to each row of pixel units, the input terminal of the first control switch is connected to the black bead voltage power supply module, and the control terminal of the first control switch is connected to the second driving module. The second driving module outputs a control signal to the control terminal of the first control switch to turn on the input and output terminals of the first control switch, so that the black bead voltage power supply module outputs a black bead voltage to the pixel units.

[0007] Optionally, the display panel further includes a detection module connected to the black insertion voltage power supply module. The detection module is used to detect the actual grayscale value of each row of pixel units. The black insertion voltage power supply module adjusts the magnitude of the output black insertion voltage based on the detection result of the detection module.

[0008] Optionally, the display panel further includes a common electrode line connected to the pixel unit to provide a common voltage to the pixel unit; wherein the insertion voltage of the black bead voltage power supply module is equal to the value of the common voltage.

[0009] Optionally, along the extension direction of the data line, the display panel is divided into multiple partitions, and the black insertion voltage input to each partition is different; wherein, the black insertion voltage input to the pixel unit in the partition near the top side of the display panel is less than the black insertion voltage input to the pixel unit in the partition near the ground side of the display panel.

[0010] Optionally, each partition includes N scan lines, where N is greater than or equal to 100 and less than 200.

[0011] This application also discloses a driving method applied to the display panel described above, comprising the following steps:

[0012] Within a subframe, the pixel unit displays and functions normally;

[0013] Within a black frame, the second driving module outputs a control signal to the black frame insertion voltage input module, and the black frame insertion voltage input module outputs a black frame insertion voltage to the pixel unit according to the control signal.

[0014] Optionally, the step of the second driving module outputting a control signal to the black insertion voltage input module within a black insertion frame, and the black insertion voltage input module outputting a black insertion voltage to the pixel unit according to the control signal, includes:

[0015] The second drive module outputs a control signal to the control terminal of the first control switch to control the input and output terminals of the first control switch to be turned on.

[0016] The black-insertion voltage power supply module outputs the black-insertion voltage to the pixel unit through the input and output terminals of the first control switch;

[0017] In this configuration, every two rows of pixel units simultaneously receive the black insertion voltage.

[0018] Optionally, the driving method further includes the step of:

[0019] The detection module detects the actual grayscale value of each row of pixel units;

[0020] The black-insertion voltage power supply module adjusts the output black-insertion voltage based on the detection results of the detection module.

[0021] This application also discloses a display device, which includes a driving circuit and a display panel as described above, wherein the driving circuit is used to drive the display panel.

[0022] The display device of this application, by setting a second driving module and a black insertion voltage input module, controls the black insertion voltage input module to output a black insertion voltage to the pixel unit, so that a black screen is added between two screens on the display panel. This allows the liquid crystal to deflect from the 0 grayscale black screen to the target grayscale when displaying the next screen, which shortens the time required for liquid crystal deflection to a certain extent, enabling the liquid crystal to deflect to the target grayscale position. This avoids dynamic screen delay or RGB color mixing errors caused by the slow response speed of the liquid crystal. Attached Figure Description

[0023] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a display panel according to the first embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of a display panel according to a second embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of a display panel according to a third embodiment of this application;

[0027] Figure 4 This is a flowchart of the steps of a driving method according to the fourth embodiment of this application;

[0028] Figure 5 This is a detailed flowchart of the steps of a driving method according to the fourth embodiment of this application;

[0029] Figure 6 This is a flowchart of another step of a driving method according to the fourth embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the structure of a display device according to the fifth embodiment of this application.

[0031] Among them, 100 is the display panel; 200 is the first driving module; 300 is the data voltage input module; 400 is the pixel unit; 500 is the second driving module; 600 is the black pin voltage input module; 610 is the first control switch; 700 is the black pin voltage power supply module; 800 is the detection module; 900 is the display device; and 910 is the driving circuit. Detailed Implementation

[0032] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0033] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0034] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] like Figure 1 As shown in the first embodiment of this application, a display panel 100 is disclosed. The display panel 100 includes a first driving module 200, a data voltage input module 300, and multiple crisscrossing scan lines and data lines. The scan lines and data lines divide a plurality of pixel units 400. The first driving module 200 is connected to the plurality of pixel units 400 through the scan lines, and the data voltage input module 300 is connected to the plurality of pixel units 400 through the data lines. The display panel 100 also includes a second driving module 500 and a black insertion voltage input module 600. One end of the black insertion voltage input module 600 is connected to the second driving module 500, and the other end is connected to the pixel unit 400. The second driving module 500 outputs a control signal to the black insertion voltage input module 600, and the black insertion voltage input module 600 outputs a black insertion voltage to the pixel unit 400 according to the control signal. The first driving module 200 is a GDL (Gate Driver) module. Less (fewer gate drivers) module 1, the second driving module 500 is a GDL2 module. GDL technology uses the original array process of the liquid crystal display panel 100 to fabricate the driving circuit of the horizontal scan lines on the substrate around the display area, so that it can replace the external integrated circuit board to complete the driving of the horizontal scan lines. It should be noted that the display panel 100 using the color sequence method in this embodiment uses pixel-level MiniLED lamp beads as lamp beads, which can display red, green, blue and white four colors respectively. Among them, the white subframe is displayed to improve the brightness of the display screen.

[0038] When the display panel 100 displays an image, a single frame includes a first subframe, a first black frame, a second subframe, a second black frame, a third subframe, a third black frame, a fourth subframe, and a fourth black frame. These first subframe, first black frame, second subframe, second black frame, third subframe, third black frame, fourth subframe, and fourth black frame are displayed sequentially to form a complete image, which is then presented to the user. To ensure that the black frames inserted in the first, second, third, and fourth black frames do not affect the user experience, the refresh rate of the display panel 100 needs to be maintained at a relatively high level, such as 480Hz or even higher values ​​like 500Hz or 1000Hz. Designers can choose the appropriate refresh rate based on the specific circumstances.

[0039] During the first, second, third, and fourth sub-frames, the first driving module 200 controls the pixel unit 400 to receive the data voltage output by the data voltage input module 300 for display via the scan lines. Specifically, a red image is displayed in the first sub-frame, a green image in the second sub-frame, a blue image in the third sub-frame, and a white image in the fourth sub-frame. During the first, second, third, and fourth black-insertion frames, the second driving module 500 outputs a control signal to the black-insertion voltage input module 600, which outputs a black-insertion voltage according to the control signal. A black voltage is applied to the pixel unit 400 to display a black screen. Specifically, a frame on the display panel 100 displays a red screen in the first subframe, a black screen in the first black-inserted frame, a green screen in the second subframe, a black screen in the second black-inserted frame, a blue screen in the third subframe, a black screen in the third black-inserted frame, a white screen in the fourth subframe, and a black screen in the fourth black-inserted frame. This displays red, green, blue, and white respectively. Utilizing the principle of visual storage in the human eye, what is ultimately seen by the human eye is the color formed by the combination of red, green, blue, and white. Furthermore, a first black-inserted frame is inserted between the first and second subframes, and a second black-inserted frame is inserted between the second and third subframes. Black frame insertion involves adding a third black frame between the third and fourth sub-frames, and a fourth black frame between the fourth sub-frame and the next new first sub-frame. This allows the liquid crystal to deflect towards the 0 grayscale (black screen) when completing the previous sub-frame (i.e., displaying the black frame). During this time, the backlight of the display panel 100 can be completely turned off, and the LEDs do not emit light. Then, when displaying the next sub-frame, the liquid crystal deflects from the 0 grayscale towards the target grayscale, rather than from the grayscale value of the previous sub-frame. This ensures sufficient time for the liquid crystal to deflect, allowing it to reach the correct grayscale position and preventing dynamic image issues caused by slow liquid crystal response. In general, the display panel 100 of this embodiment, by setting a second driving module 500 and a black insertion voltage input module 600, controls the black insertion voltage input module 600 to output a black insertion voltage to the pixel unit 400, so that the display panel 100 adds a black screen between two screens. When the liquid crystal displays the next screen, it deflects from the black screen with a gray level of 0 to the target gray level, which shortens the time required for liquid crystal deflection to a certain extent, so that the liquid crystal can deflect to the position of the target gray level, thereby avoiding the occurrence of dynamic screen delay or RGB color mixing error due to the slow response speed of the liquid crystal.

[0040] The first driving module 200 and the second driving module 500 are respectively disposed on both sides of the display area of ​​the display panel 100, that is, the first driving module 200 is disposed on the left side of the display panel 100, and the second driving module 500 is disposed on the right side of the display panel 100, as shown below. Figure 1 As shown, when the display panel 100 is in the first subframe period, the first driving module 200 controls the pixel unit 400 to receive the data voltage output by the data voltage input module 300 through the scan lines, and sequentially controls the entire display panel 100 line by line according to the arrangement order of the scan lines. When the first driving module 200 opens to a certain number of lines, for example, to two hundred lines, it enters the first black insertion frame period. The second driving module 500 outputs a control signal to the black insertion voltage input module 600. The black insertion voltage input module 600 outputs a black insertion voltage to the pixel unit 400 of the first line according to the control signal, so that... The liquid crystal is deflected towards the 0 grayscale level, and line-by-line control is performed sequentially. During this process, the first driving module 200 continues to perform line-by-line control of the entire panel according to the scan line arrangement order until all scan lines of the entire display panel 100 are opened. When the black insertion voltage input module 600 outputs the black insertion voltage to the last row of pixel units 400, the second subframe period begins. The first driving module 200 then operates to control the pixel units 400 to receive the data voltage output by the data voltage input module 300 through the scan lines, and performs line-by-line control of the entire display panel 100 according to the scan line arrangement order. Subsequently, the process sequentially enters the second black frame, the third subframe, the third black frame, the fourth subframe, and the fourth black frame, cycling through these frames to enable the display panel 100 to display. In the aforementioned driving method, it is not necessary to wait until the first driving module 200 has opened all scan lines of the display panel 100 before entering the black frame insertion period. This shortens the time it takes for the display panel 100 to display a black screen while also allowing the liquid crystal sufficient deflection time. The liquid crystal can deflect to a position that satisfies the correct grayscale display, thus avoiding dynamic image delays or RGB color mixing errors caused by slow liquid crystal response speeds, which affect color stability. Furthermore, the sides... The first driving module 200 and the second driving module 500 operate in a staggered manner, preventing data interference and crosstalk. It should be noted that the above-mentioned opening to 200 lines is not limited to 200 lines. Designers can choose to design according to the actual situation of the display panel 100, such as opening to the 300th or 400th line before the second driving module 500 starts working. The display panel 100 also includes a timing control module (Tcon), which is connected to the first driving module 200 and the second driving module 500 respectively to control the timing arrangement of each subframe and each black insertion frame.

[0041] Furthermore, the display panel 100 also includes a black bead voltage power supply module 700. The black bead voltage input module 600 includes multiple first control switches 610, with one first control switch 610 corresponding to each row of pixel units 400. The output terminal of the first control switch 610 is connected to each row of pixel units 400, and the input terminal of the first control switch 610 is connected to the black bead voltage power supply module 700. The control terminal of the first control switch 610 is connected to the second driving module 500, and the second driving module 500 outputs a control signal to the first... The control terminal of the control switch 610 is used to connect the input and output terminals of the first control switch 610, so that the black insertion voltage power supply module 700 outputs the black insertion voltage to the pixel unit 400. In this embodiment, the black insertion voltage input module 600 provides the black insertion voltage to the pixel unit 400 through the black insertion voltage power supply module 700. When it is necessary to change the black insertion voltage of different magnitudes, only the black insertion voltage power supply module 700 needs to be adjusted. It should be noted that the black insertion voltage power supply module 700 can be connected to the power module of the display panel 100. The display panel 100 is connected to the common electrode line, which is connected to the pixel unit 400 to provide a common voltage to the pixel unit 400. The black insertion voltage power supply module 700 is also connected to the common electrode line, and the display panel 100 further includes a common electrode line. The common electrode line is connected to the pixel unit 400 to provide a common voltage to the pixel unit 400. The black insertion voltage power supply module 700 is connected to the common electrode line so that the black insertion voltage of the black insertion voltage power supply module 700 is equal to the value of the common voltage. Thus, when the display panel 100 enters the black insertion frame period (first black insertion frame, second black insertion frame, third black insertion frame, fourth black insertion frame), the black insertion voltage of the black insertion voltage power supply module 700 is equal to the value of the common voltage. The voltage in pixel unit 400 is short-circuited with the common voltage, so that the voltage in pixel unit 400 is pulled down to the common voltage. For the liquid crystal, the common voltage causes the liquid crystal to deflect toward 0 gray level. At this time, the second driving module 500 only needs to short-circuit the common voltage with each row of pixel unit 400 in sequence to deflect the liquid crystal corresponding to each row of pixel unit 400 toward 0 gray level. There is no restriction here. Designers can choose to design the black insertion voltage power supply module 700 according to the actual situation. It can be connected to the common electrode line to output the common voltage as the black insertion voltage, or it can be connected to the power supply module to provide a controllable black insertion voltage.

[0042] To avoid the situation where, during black frame insertion, the second driving module 500 sequentially provides black insertion voltage to the pixel units 400 of each row according to the extension direction of the data line. During this process, the pixel units 400 of the first row may have finished charging and are in a hold-up period, while the pixel units 400 of the last row may not have yet been charged, causing a greater difference in brightness display on the display panel 100 as the rows approach the last. Therefore, the inventors have implemented the following design to improve the above-mentioned effect, such as... Figure 2 As shown, as a second embodiment of this application, a display panel 100 is disclosed. Along the extension direction of the data lines, the display panel 100 is divided into multiple partitions. The black insertion voltage input to each partition is different. The black insertion voltage input to the partition closer to the top side of the display panel 100 is less than the black insertion voltage input to the partition closer to the ground side of the display panel 100. Each partition includes N scan lines, where N is greater than or equal to 100 and less than 200. By dividing the display panel 100 into partitions, and ensuring that the black insertion voltage of each partition is different, ... The brightness of the display panel 100 is balanced by setting the voltage to increase or decrease in a stepwise manner. It should be noted that the black insertion voltage can be simulated using an optical brightness measuring instrument to obtain the actual grayscale value between each partition when inserting a black frame under different grayscale levels (255, 200, 128, 64, and 0). In actual display, the black insertion voltage can be adjusted accordingly based on the actual grayscale change curve recorded for each partition to balance the brightness of the display panel 100.

[0043] Alternatively, during black frame insertion, the second driving module 500 can simultaneously provide black insertion voltage to two rows of pixel units 400, meaning both rows of pixel units 400 are inserted simultaneously. This design allows the retention time of the last row of pixel units 400 on the display panel 100 to be as close as possible to the retention time of the first row of pixel units 400, which can improve the brightness difference problem of the display panel 100 to some extent. It should be noted that this does not limit the second driving module 500 to only providing black insertion voltage to two rows of pixel units 400 simultaneously. Designers can choose the design according to the actual situation, which will not be elaborated here.

[0044] like Figure 3As shown in the third embodiment of this application, a display panel 100 is disclosed. The display panel 100 further includes a detection module 800, which is connected to the black insertion voltage power supply module 700. The detection module 800 is used to detect the actual grayscale value of each row of pixel units 400. The black insertion voltage power supply module 700 adjusts the magnitude of the output black insertion voltage according to the detection result of the detection module 800. By actually detecting the actual grayscale value of each row of pixel units 400 through the detection module 800, the magnitude of the output black insertion voltage is adjusted so that the liquid crystal can be deflected to 0 grayscale. This avoids light leakage caused by the liquid crystal not being deflected to 0 grayscale due to the black insertion voltage being too high or too low. Furthermore, because the actual grayscale value of each row of pixel units 400 is detected in real time, it can be ensured that the entire display panel 100 can adjust the black insertion voltage according to the actual situation.

[0045] like Figure 4 As shown, as a fourth embodiment of this application, a driving method is disclosed, applied to the display panel described in the above embodiments, including the following steps:

[0046] Within the subframe, the pixel unit displays and functions normally;

[0047] Specifically, the subframe can be one of the first subframe, the second subframe, the third subframe, or the fourth subframe, which respectively correspond to displaying a red screen, a green screen, a blue screen, and a white screen. Within the subframe, the first driving module controls the pixel unit to receive the data voltage output by the data voltage input module through the scan line for display.

[0048] Within the black insertion frame, the second driving module outputs a control signal to the black insertion voltage input module, and the black insertion voltage input module outputs a black insertion voltage to the pixel unit according to the control signal;

[0049] Specifically, the black frame can be one of the first, second, third, or fourth black frames. In the above four black frames, the display panel displays a black screen, and the liquid crystal is deflected to 0 gray level. When it is necessary to display the next sub-frame, the liquid crystal deflects from 0 gray level toward the target gray level, rather than from the gray level value of the previous sub-frame toward the target gray level value. This ensures that the liquid crystal has sufficient time to deflect, allowing it to deflect to the position that satisfies the correct gray level display. This avoids the dynamic screen delay or RGB color mixing errors caused by the slow response speed of the liquid crystal, which affect color stability.

[0050] Furthermore, such as Figure 5As shown, the step of the second driving module outputting a control signal to the black insertion voltage input module within the black insertion frame, and the black insertion voltage input module outputting a black insertion voltage to the pixel unit according to the control signal, includes:

[0051] The second drive module outputs a control signal to the control terminal of the first control switch to control the input and output terminals of the first control switch to be turned on.

[0052] The black-insertion voltage power supply module outputs the black-insertion voltage to the pixel unit through the input and output terminals of the first control switch;

[0053] In this configuration, every two rows of pixel units simultaneously receive the black insertion voltage.

[0054] Specifically, by simultaneously providing black insertion voltage to two rows of pixel units, that is, by performing black insertion on both rows of pixel units at the same time, this design can make the retention time of the pixel units in the last row of the display panel as close as possible to the retention time of the pixel units in the first row, which can improve the brightness difference problem of the display panel to a certain extent.

[0055] Furthermore, such as Figure 6 As shown, the driving method further includes the following steps:

[0056] The detection module detects the actual grayscale value of each row of pixel units;

[0057] The black-insertion voltage power supply module adjusts the output black-insertion voltage based on the detection results of the detection module.

[0058] Specifically, the detection module actually detects the actual grayscale value of each row of pixel units and adjusts the output black insertion voltage so that the liquid crystal can be deflected to 0 grayscale. This avoids light leakage caused by the liquid crystal not being deflected to 0 grayscale due to the black insertion voltage being too high or too low. Moreover, because the actual grayscale value of each row of pixel units is detected in real time, it can ensure that the black insertion voltage of the entire display panel can be adjusted according to the actual situation.

[0059] like Figure 7 As shown, as the fifth embodiment of this application, a display device 900 is disclosed, including a driving circuit 910 and a display panel 100 as described in the above embodiments, wherein the driving circuit 910 is used to drive the display panel 100.

[0060] The display device 900 of this embodiment, by setting a second driving module 500 and a black insertion voltage input module 600, controls the black insertion voltage input module 600 to output a black insertion voltage to the pixel unit 400, so that the display panel 100 adds a black screen between two screens. When the liquid crystal displays the next screen, it deflects from the black screen with a gray level of 0 to the target gray level, which shortens the time required for liquid crystal deflection to a certain extent, so that the liquid crystal can deflect to the position of the target gray level. This avoids the occurrence of dynamic screen delay or RGB color mixing errors due to the slow response speed of the liquid crystal.

[0061] It should be noted that the limitations on each step involved in this solution are not considered as limiting the order of steps, provided that they do not affect the implementation of the specific solution. The steps listed first can be executed first, later, or even simultaneously. As long as this solution can be implemented, it should be considered to fall within the scope of protection of this application.

[0062] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0063] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A display panel, comprising a first driving module, a data voltage input module, and a plurality of crisscrossing scan lines and data lines, wherein the scan lines and data lines divide a plurality of pixel units, the first driving module is connected to the plurality of pixel units through the scan lines, and the data voltage input module is connected to the plurality of pixel units through the data lines, characterized in that, The display panel also includes: Second drive module; A black pixel voltage input module, one end of which is connected to the second driving module and the other end of which is connected to the pixel unit; The black-insertion voltage power supply module includes multiple first control switches, with one first control switch corresponding to one row of pixel units. The output terminal of the first control switch is connected to one row of pixel units, the input terminal of the first control switch is connected to the black-insertion voltage power supply module, and the control terminal of the first control switch is connected to the second drive module. A detection module, which is connected to the black insertion voltage power supply module, is used to detect the actual grayscale value of each row of pixel units; The second driving module outputs a control signal to the black pixel insertion voltage input module, and the black pixel insertion voltage input module outputs a black pixel insertion voltage to the pixel unit according to the control signal. The second driving module outputs a control signal to the control terminal of the first control switch to turn on the input and output terminals of the first control switch, so that the black insertion voltage power supply module outputs the black insertion voltage to the pixel unit. The black-insertion voltage power supply module adjusts the output black-insertion voltage based on the detection results of the detection module.

2. The display panel according to claim 1, characterized in that, The display panel also includes a common electrode line, which is connected to the pixel unit to provide a common voltage to the pixel unit; The plug voltage of the plug voltage power supply module is equal to the value of the common voltage.

3. The display panel according to claim 1, characterized in that, Along the extension direction of the data line, the display panel is divided into multiple partitions, and the input black pin voltage is different for each partition; Among them, the black insertion voltage input to the pixel unit in the partition near the top side of the display panel is less than the black insertion voltage input to the pixel unit in the partition near the ground side of the display panel.

4. The display panel according to claim 3, characterized in that, Each partition comprises N scan lines, where N is greater than or equal to 100 and less than 200.

5. A driving method applied to a display panel as described in any one of claims 1 to 4, characterized in that, Including the following steps: Within a subframe, the pixel unit displays and functions normally; Within a black frame, the second driving module outputs a control signal to the black frame insertion voltage input module, and the black frame insertion voltage input module outputs a black frame insertion voltage to the pixel unit according to the control signal.

6. The driving method according to claim 5, characterized in that, The step of the second driving module outputting a control signal to the black insertion voltage input module within a black insertion frame, and the black insertion voltage input module outputting a black insertion voltage to the pixel unit according to the control signal, includes: The second drive module outputs a control signal to the control terminal of the first control switch to control the input and output terminals of the first control switch to be turned on. The black-insertion voltage power supply module outputs the black-insertion voltage to the pixel unit through the input and output terminals of the first control switch; In this configuration, every two rows of pixel units simultaneously receive the black insertion voltage.

7. The driving method according to claim 5, characterized in that, It also includes the following steps: The detection module detects the actual grayscale value of each row of pixel units; The black-insertion voltage power supply module adjusts the output black-insertion voltage based on the detection results of the detection module.

8. A display device, characterized in that, It includes a driving circuit and a display panel as described in any one of claims 1 to 4, wherein the driving circuit is used to drive the display panel.

Images