Driving method for display panel, and display device

Abstract

A driving method for a display panel, and a display device. The display panel comprises a plurality of pixels, and each pixel comprises first to ith sub-pixels of different colors; the first to ith sub-pixels in one pixel are all connected to one data line and are respectively connected to first to ith gate lines, and each gate line corresponds to one row of sub-pixels. The driving method for the display panel comprises: acquiring a display scene of a video source signal (100); and when the display scene of the video source signal is a target display scene, and when first to ith sub-pixels are controlled to be sequentially and alternately charged within one frame display period, increasing the charging time of each row of sub-pixels by a target time (200).

Description

A display panel driving method and a display device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 28, 2023, with application number 202311614714.7 and application name “A driving method and display device for a display panel”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display driving technology, and in particular to a display panel driving method and a display device. Background Art

[0003] Triple-rate-driving (TRD) driving technology connects three horizontally adjacent sub-pixels of different colors to a single data line, which are driven sequentially by different scan lines. This reduces the number of data lines and data driver output channels by one-third compared to conventional methods. This means that a single source driver chip can perform the work of three, greatly simplifying the manufacturing process and effectively reducing manufacturing costs. Technical issues

[0004] However, this method reduces the number of driver chips, changing from one source driver chip for one data line to one source driver chip for multiple data lines. The time allocated to each data line is reduced to 1 / 3 of the original, which will lead to insufficient charging of the storage capacitor and insufficient deflection of the liquid crystal, thereby affecting the pixel transmittance and causing uneven brightness of the picture. Technical Solutions

[0005] The present application provides a display panel driving method and a display device, which can effectively increase the charging time of sub-pixels in the display panel, thereby alleviating the problem of uneven brightness of the display panel.

[0006] The present application provides a method for driving a display panel, wherein the display panel includes a plurality of pixels, each pixel including first to i-th sub-pixels of i different colors; the first to i-th sub-pixels in a pixel are commonly connected to a data line and are respectively connected to first to i-th gate lines, with each gate line corresponding to a row of sub-pixels; the method for driving the display panel obtains a display scene of a video source signal; when the display scene of the video source signal is a target display scene, when controlling the first to i-th sub-pixels to be alternately charged in sequence within a frame display period, the charging time of each row of sub-pixels is increased by a target time, so that the display panel displays a picture corresponding to the video source signal.

[0007] In some embodiments, a method for driving a display panel increases the charging time of each row of sub-pixels by a target time by obtaining the actual frame rate of a video source signal and reducing the actual frame rate of the video source signal to a target frame rate; a corresponding control signal is output according to the target frame rate to charge each row of sub-pixels, so that the charging time of each row of sub-pixels is increased by a target time.

[0008] In some embodiments, a method for driving a display panel obtains an actual frame rate of a video source signal and reduces the actual frame rate of the video source signal to a target frame rate by obtaining the actual frame rate of the video source signal and a mapping relationship between a preset frame rate and time; according to the mapping relationship and the actual frame rate of the video source signal, obtains a target frame rate corresponding to a target time; and reduces the actual frame rate of the video source signal to the target frame rate.

[0009] In some embodiments of the display panel driving method, the control signal includes a line synchronization signal and an enable signal; the interval from the falling edge of the line synchronization signal to the rising edge of the first enable signal after the falling edge is the first time, and the interval from the rising edge of the enable signal to the first falling edge after the rising edge is the second time, and the second time is the charging time.

[0010] An embodiment of the present application also provides a method for driving a display panel, which includes multiple pixels. The method for driving the display panel obtains a display scene and a frame rate of a video source signal, and uses the frame rate of the video source signal as the initial frame rate. When the display scene of the video source signal is a target display scene, the initial frame rate is reduced to a first frame rate, and the first to i-th sub-pixels are controlled to be charged alternately in sequence within a frame display period according to the first frame rate, so that the display panel displays a picture corresponding to the video source signal. When the smoothness of the picture displayed by the display panel controlled according to the first frame rate reaches a target smoothness, the first frame rate is stored as a first target frame rate according to an external control instruction, and the charging time corresponding to the first target frame rate is stored as a first target charging time.

[0011] In some embodiments, the driving method of the display panel further reduces the initial frame rate to a second frame rate when the display scene of the video source signal is a target display scene, and controls the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the second frame rate, so that the display panel displays the picture corresponding to the video source signal; wherein the first frame rate and the second frame rate are different; when the smoothness of the picture displayed by the display panel controlled according to the second frame rate reaches the target smoothness, the second frame rate is stored as the second target frame rate according to the external control instruction, and the charging time corresponding to the second target frame rate is stored as the second target charging time.

[0012] In some embodiments, the driving method of the display panel further reduces the initial frame rate to a third frame rate when the smoothness of the picture displayed by the display panel controlled according to the first frame rate or the second frame rate does not reach the target smoothness; controls the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the third frame rate, so that the display panel displays the picture corresponding to the video source signal; when the smoothness of the picture displayed by the display panel controlled according to the third frame rate reaches the target smoothness, the external control instruction stores the third frame rate as the third target frame rate, and stores the charging time corresponding to the third target frame rate as the third target charging time.

[0013] In some embodiments of the display panel driving method, the display panel driving method further detects the number of stored total target frame rates; when the number of total target frame rates is less than a preset number, the video source signal is replaced.

[0014] In some embodiments, the method for driving a display panel further obtains a first target time according to a first target charging time corresponding to the first target frame rate and an initial charging time corresponding to the initial frame rate, and stores the first target time.

[0015] An embodiment of the present application further provides a display device, including a display panel and a driving module. The display panel includes a plurality of pixels, each pixel including first to i-th sub-pixels of i different colors. The driving module is connected to each row of pixels, and is configured to:

[0016] Obtaining the display scene of the video source signal;

[0017] When the display scene of the video source signal is the target display scene, when controlling the first to i-th sub-pixels to be charged alternately in sequence within a frame display period, the charging time of each row of sub-pixels is increased by the target time, so that the display panel displays the picture corresponding to the video source signal.

[0018] In a display device of some embodiments, the first to i-th sub-pixels in a pixel are connected to a common data line and are connected to the first to i-th gate lines respectively, and each gate line corresponds to a row of sub-pixels;

[0019] In the display device of some embodiments, the driving module is specifically configured to:

[0020] Acquiring an actual frame rate of the video source signal, and reducing the actual frame rate of the video source signal to a target frame rate;

[0021] A corresponding control signal is outputted according to the target frame rate to charge the sub-pixels in each row, so that the charging time of the sub-pixels in each row is increased by the target time.

[0022] In the display device of some embodiments, the driving module is further configured to:

[0023] Obtaining an actual frame rate of the video source signal and a mapping relationship between a preset frame rate and time;

[0024] Acquire the target frame rate corresponding to the target time according to the mapping relationship and the actual frame rate of the video source signal;

[0025] The actual frame rate of the video source signal is reduced to the target frame rate.

[0026] In some embodiments of the display device, the control signal includes a line synchronization signal and an enable signal; the interval from the falling edge of the line synchronization signal to the first rising edge of the enable signal after the falling edge is the first time, and the interval from the rising edge of the enable signal to the first falling edge after the rising edge is the second time, and the second time is the charging time.

[0027] An embodiment of the present application also provides a display device, including a display panel and a driving module; the display panel includes multiple pixels, each pixel includes first to i-th sub-pixels of i different colors; the driving module is connected to each row of pixels, and the driving module is used to: obtain the display scene and frame rate of the video source signal, and use the frame rate of the video source signal as the initial frame rate; when the display scene of the video source signal is the target display scene, reduce the initial frame rate to a first frame rate, and control the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the first frame rate, so that the display panel displays the picture corresponding to the video source signal; when the smoothness of the picture displayed by the display panel controlled according to the first frame rate reaches the target smoothness, the first frame rate is stored as the first target frame rate according to the external control instruction, and the charging time corresponding to the first target frame rate is stored as the first target charging time.

[0028] In the display device of some embodiments, the driving module is further used to: when the display scene of the video source signal is a target display scene, reduce the initial frame rate to a second frame rate, and control the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the second frame rate, so that the display panel displays the picture corresponding to the video source signal; wherein the first frame rate and the second frame rate are different; when the smoothness of the picture displayed by the display panel controlled according to the second frame rate reaches the target smoothness, the second frame rate is stored as the second target frame rate according to the external control instruction, and the charging time corresponding to the second target frame rate is stored as the second target charging time.

[0029] In some embodiments of the display device, the driving module is further configured to:

[0030] When the smoothness of the image displayed on the display panel controlled according to the first frame rate or the second frame rate does not reach the target smoothness, reducing the initial frame rate to a third frame rate;

[0031] controlling the first to i-th sub-pixels to be alternately charged in sequence within a frame display period according to the third frame rate, so that the display panel displays a picture corresponding to the video source signal;

[0032] When the smoothness of the picture displayed on the display panel controlled according to the third frame rate reaches the target smoothness, the external control instruction stores the third frame rate as the third target frame rate, and stores the charging time corresponding to the third target frame rate as the third target charging time.

[0033] In some embodiments of the display device, the driving module is further configured to: detect the number of stored total target frame rates; and when the number of stored total target frame rates is less than a preset number, replace the video source signal.

[0034] In some embodiments of the display device, the driving module is further configured to obtain a first target time according to the first target charging time corresponding to the first target frame rate and the initial charging time corresponding to the initial frame rate, and store the first target time.

[0035] Intentional effect

[0036] The present application provides a display panel driving method and a display device, wherein the display panel driving method obtains a display scene of a video source signal. When the display scene of the video source signal is a target display scene, the first to i-th sub-pixels are controlled to be charged alternately in sequence within a frame display period, the charging time of each row of sub-pixels is increased by a target time, and each row of sub-pixels is charged according to the increased charging time, so that the display panel displays the picture corresponding to the video source signal, thereby alleviating the problem of uneven brightness of the display panel picture caused by insufficient charging of sub-pixels. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0038] FIG1 is a structural diagram of a display panel provided in an embodiment of the present application.

[0039] FIG2 is a flow chart of a first embodiment of a method for driving a display panel provided in an embodiment of the present application.

[0040] FIG3 is a flow chart of step 200 in the method for driving a display panel provided in an embodiment of the present application.

[0041] FIG4 is a timing diagram of a row synchronization signal and an enable signal in a method for driving a display panel provided in an embodiment of the present application.

[0042] FIG5 is a flow chart of step 210 in the method for driving a display panel provided in an embodiment of the present application.

[0043] FIG6 is a flow chart of a second embodiment of a method for driving a display panel provided in an embodiment of the present application.

[0044] FIG7 is a flow chart of a third embodiment of a display driver driving method provided in an embodiment of the present application.

[0045] FIG8 is a flow chart of a fourth embodiment of a display driver driving method provided in an embodiment of the present application.

[0046] FIG9 is a flowchart of a fifth embodiment of a display driver driving method provided in an embodiment of the present application.

[0047] FIG10 is a schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] 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 embodiments described 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 those skilled in the art without making creative efforts are within the scope of protection of this application.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. The features specified as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0050] Please refer to Figure 1. This embodiment provides a display panel, which includes multiple pixels, each pixel includes first to i-th sub-pixels of i different colors; the first to i-th sub-pixels in a pixel are commonly connected to a data line and are respectively connected to first to i-th gate lines, each gate line corresponds to a row of sub-pixels, where i is a positive integer greater than 1.

[0051] Specifically, the structure of the display panel is described using i=3 as an example. Accordingly, each pixel includes a first subpixel, a second subpixel, and a third subpixel of three different colors. For example, the first subpixel is a red subpixel R, the second subpixel is a green subpixel G, and the third subpixel is a blue subpixel B. The data lines and gate lines in the display panel are arranged crosswise, the subpixels of the three colors are alternately and repeatedly arranged in the vertical direction, and the subpixels of the same color are repeatedly arranged in the horizontal direction.

[0052] In Figure 1, the R, G, and B sub-pixels in each vertically arranged pixel are connected to the data line D1 or D2 in common, and are connected to three gate lines G1-G3 or G4-G6 respectively. Each row of sub-pixels shares a gate line, and is thus driven sequentially within each frame display cycle. Therefore, the display panel includes m data lines for driving 3m horizontally arranged sub-pixels and 3n gate lines for driving n vertically arranged sub-pixels, thereby achieving a resolution of m×n pixels (m and n are natural numbers). Therefore, compared with the conventional structure, the number of gate lines has increased three times, but the number of data lines has been reduced to one-third, so one data line is needed to charge the sub-pixels of three colors.

[0053] Based on the above display panel, referring to FIG. 2 , the present application provides a method for driving a display panel, the method comprising:

[0054] 100. Obtain a display scene of a video source signal;

[0055] 200. When the display scene of the video source signal is the target display scene, when controlling the first to i-th sub-pixels to be charged alternately in sequence within a frame display period, the charging time of each row of sub-pixels is increased by the target time, so that the display panel displays the picture corresponding to the video source signal.

[0056] The display scenario of the video source signal refers to the refresh rate requirement for the image display of the video source signal, while the target display scenario refers to the image display of the video source signal with a lower refresh rate requirement, such as a static image or a soothing dynamic image. In this application, by obtaining the display scenario of the video source signal, if the image display of the video source signal has a lower refresh rate requirement, then when controlling the alternating charging of the first to i-th sub-pixels in a frame display period, the charging time of each row of sub-pixels is increased by a target time, and each row of sub-pixels is charged according to the increased charging time, so that the display panel displays the image corresponding to the video source signal, thereby alleviating the problem of uneven brightness of the display panel image caused by insufficient charging of sub-pixels.

[0057] Referring to FIG. 3 , in some embodiments, step 200 specifically includes:

[0058] 210. Acquire an actual frame rate of a video source signal, and reduce the actual frame rate of the video source signal to a target frame rate;

[0059] 220. Output corresponding control signals according to the target frame rate to charge each row of sub-pixels, so that the charging time of each row of sub-pixels increases by the target time.

[0060] In this embodiment, the actual frame rate of the video source signal is used as the initial frame rate. The frame rate in this application matches the refresh rate of the display panel, meaning that when the frame rate is high, the corresponding refresh rate is also high; when the frame rate is low, the corresponding refresh rate of the display panel is also high. If the video source signal's screen display requires a lower refresh rate, the initial frame rate can be appropriately reduced to the target frame rate, thereby increasing the scanning time for each frame. Consequently, when the first through i-th sub-pixels are alternately charged within a frame display period, the charging time for each row of sub-pixels is increased.

[0061] In some embodiments, when the display scene of the video source signal is a non-target display scene, the first through i-th sub-pixels are controlled to be alternately charged in sequence within a one-frame display period based on the actual frame rate. Specifically, when the display scene of the video source signal is a non-target display scene, i.e., the image display of the video source signal has a high refresh rate requirement, no frame rate adjustment is performed. Instead, the multiple sub-pixels are controlled to be alternately charged in sequence within a one-frame display period based on the actual frame rate to complete the image display of the video source signal.

[0062] Please refer to Figure 4 , where the control signals include a horizontal synchronization signal Hsync and an enable signal DE. For a display panel, when the horizontal synchronization signal Hsync arrives, the gate lines of the corresponding row control the sub-pixels to enter a ready-to-charge state. Then, when the enable signal DE arrives, the data lines begin writing data signals, and the corresponding sub-pixels enter a charging state. Specifically, the interval from the falling edge of the horizontal synchronization signal Hsync to the first rising edge of the enable signal DE after the falling edge is a first time HBP1, and the interval from the rising edge of the enable signal DE to the first falling edge after the rising edge is a second time t2. The first time HBP1 is the blanking time, and the second time t2 is the charging time. In this embodiment, increasing the charging time, i.e., increasing the second time t2, increases the overall horizontal synchronization signal Hsync time. This increases the scanning time of each row of sub-pixels, and accordingly reduces the frame rate. Conversely, if the charging time needs to be increased, the frame rate needs to be reduced accordingly.

[0063] Referring to FIG. 5 , in some embodiments, step 210 includes:

[0064] 211. Obtaining an actual frame rate of a video source signal and a mapping relationship between a preset frame rate and time;

[0065] 212. Obtain a target frame rate corresponding to the target time according to the mapping relationship and the actual frame rate of the video source signal;

[0066] 213. Reduce the actual frame rate of the video source signal to the target frame rate.

[0067] In this embodiment, the mapping relationship between frame rate and time is pre-stored before frame rate adjustment. The mapping relationship between frame rate and time includes initial frame rate, target frame rate and target time. If the initial frame rate is constant, when there are different target frame rates, then there will be corresponding different target times.

[0068] Table 1

[0069] For example, as shown in Table 1, if the initial frame rate is 60Hz and the target frame rate is 45Hz, the corresponding increased target time can be 0.86us; when the target frame rate is 30Hz, the corresponding increased target time can be 2.57us; and when the target frame rate is 24Hz, the corresponding increased target time can be 3.86us. Therefore, in this embodiment, by pre-storing the mapping relationship between the initial frame rate, target frame rate, and target time, when the actual frame rate of the video source signal is detected, if the charging time needs to be increased by the target time, the target frame rate corresponding to the target time is searched according to the mapping relationship, and then each row of sub-pixels is charged according to the target frame rate to increase the charging time of each row of sub-pixels, thereby alleviating the problem of uneven brightness of the display panel caused by insufficient sub-pixel charging.

[0070] Referring to FIG. 6 , an embodiment of the present application further provides a method for driving a display panel, the method comprising:

[0071] 101. Obtain a display scene and frame rate of a video source signal, and use the frame rate of the video source signal as an initial frame rate;

[0072] 102. When the display scene of the video source signal is the target display scene, reduce the initial frame rate to a first frame rate, and control the first to i-th sub-pixels to be alternately charged in sequence within a frame display period according to the first frame rate, so that the display panel displays a picture corresponding to the video source signal;

[0073] 103. When the smoothness of the picture displayed on the display panel according to the first frame rate control reaches the target smoothness, the first frame rate is stored as the first target frame rate according to the external control instruction, and the charging time corresponding to the first target frame rate is stored as the first target charging time.

[0074] In this embodiment, during the display panel testing phase, i.e., the phase in which the mapping relationship between frame rate and time is established, the frame rate and display scene of the video source signal to be tested are obtained. If the refresh rate required for the screen display of the video source signal is low, the frame rate of the video source signal is reduced to a first frame rate, and each row of sub-pixels is charged according to the first frame rate, so that the display panel displays the screen corresponding to the video source signal. It is then observed whether the smoothness of the screen displayed by the display panel according to the first frame rate control reaches the target smoothness. Here, the target smoothness is the smoothness of the screen that does not affect the perception of the human eye, that is, the screen is perceived as a smooth screen by the human eye, that is, the screen smoothness reaches the target smoothness. If the image displayed by the display panel according to the first frame rate control reaches the target smoothness, an external control instruction is obtained. According to the external control instruction, the first frame rate is set as the first target frame rate and the first charging time corresponding to the first target frame rate is stored as the first target charging time, so that the target frame rate can be directly called to control the display of the display panel.

[0075] Of course, in some embodiments, the first charging time and the initial charging time corresponding to the initial frame rate can also be compared, and then the difference between the first charging time and the initial charging time can be obtained, and the difference can be stored as the first target time, so that when the display panel is subsequently controlled, the corresponding target frame rate can be directly found according to the target time that needs to be increased.

[0076] Referring to FIG. 7 , in some embodiments, the method for driving a display panel further includes:

[0077] 104. When the display scene of the video source signal is the target display scene, reduce the initial frame rate to a second frame rate, and control the first to i-th sub-pixels to be alternately charged in sequence within a frame display period according to the second frame rate, so that the display panel displays a picture corresponding to the video source signal; wherein the first frame rate and the second frame rate are different;

[0078] 105. When the smoothness of the picture displayed on the display panel according to the second frame rate reaches the target smoothness, the second frame rate is stored as the second target frame rate according to the external control instruction, and the charging time corresponding to the second target frame rate is stored as the second target charging time.

[0079] To increase the number of target frame rates, after storing the first target frame rate and the first charging time corresponding to the first target frame rate, the frame rate of the video source signal is adjusted again. Specifically, the initial frame rate is reduced to a second frame rate. If the display panel's image smoothness can reach the target smoothness when charging sub-pixels according to the second frame rate, the second frame rate is stored as the second target frame rate. At the same time, the charging time corresponding to the second target frame rate is also stored as the second target charging time.

[0080] Similarly, in some embodiments, the second charging time can be compared with the initial charging time corresponding to the initial frame rate, and then the difference between the second charging time and the initial charging time can be obtained, and the difference can be stored as the second target time, so that when the display panel is subsequently controlled, the corresponding target frame rate can be directly found according to the target time that needs to be increased.

[0081] Referring to FIG. 8 , in some embodiments, the method for driving a display panel further includes:

[0082] 106. When the smoothness of the image displayed on the display panel according to the first frame rate or the second frame rate does not reach the target smoothness, reducing the initial frame rate to a third frame rate;

[0083] 107. Control the first to i-th sub-pixels to be alternately charged in sequence within one frame display period according to the third frame rate, so that the display panel displays a picture corresponding to the video source signal;

[0084] 108. When the smoothness of the picture displayed on the display panel according to the third frame rate reaches the target smoothness, the external control instruction stores the third frame rate as the third target frame rate, and stores the charging time corresponding to the third target frame rate as the third target charging time.

[0085] In this embodiment, when the image smoothness of the display panel controlled according to the first frame rate or the second frame rate does not reach the target smoothness, the initial frame rate is reduced to a third frame rate, which is different from both the first frame rate and the second frame rate. If the image display effect is not good when the initial frame rate is reduced to the first frame rate or the second frame rate, the initial frame rate is further adjusted to the third frame rate. If the image displayed by the display panel controlled according to the third frame rate reaches the target smoothness, an external control instruction is obtained, and the second frame rate is stored as the target frame rate according to the external control instruction, so that the target frame rate can be directly called to control the display of the display panel later. Otherwise, the initial frame rate will continue to be adjusted for display testing, so as to obtain more target frame rates for storage.

[0086] Referring to FIG. 9 , in some embodiments, the method for driving a display panel further includes:

[0087] 109. Detect the number of stored total target frame rates;

[0088] 1010. When the total target frame rate is less than a preset number, the video source signal is changed.

[0089] In this application, the total number of stored target frame rates is also obtained. When the total number of stored target frame rates reaches a preset number, the test is stopped. If the target frame rate is less than the preset number, the video source signal is replaced, that is, the initial frame rate is changed, and the frame rate and display scene of the video source signal are obtained again to perform the display test. In other words, when the target frame rate is less than the preset number, steps 101 to 108 are repeated to obtain more target frame rates.

[0090] The display panel driving method of this embodiment is applied during a test phase of the display panel. During the test phase, the frame rate of a video source signal is adjusted to observe the smoothness of the display panel's image at a first frame rate, a second frame rate, or a third frame rate. Based on the smoothness of the image, a determination is made as to whether to save the first frame rate, the second frame rate, or the third frame rate as a target frame rate, thereby pre-storing and acquiring multiple target frame rates. Furthermore, if the number of target frame rates is insufficient, the video source signal is continuously added to continue testing, so that a sufficient number of target frame rates can be pre-stored.

[0091] Referring to FIG. 10 , an embodiment of the present application further provides a display device, which includes a driving module 10 and the above-mentioned display panel 20 . Since the structure of the display panel 20 has been described in detail above, it will not be repeated here.

[0092] The driving module 10 in the present application is respectively connected to the data lines and gate lines of the display panel 20. The driving module 10 is used to execute the above-mentioned driving method of the display panel 20. Since the driving method is described in detail above, it will not be repeated here.

[0093] In some embodiments, the driving module 10 includes a controller 111, a gate driving unit 112, and a source driving unit 113, wherein the gate driving unit 112 is connected to multiple gate lines and the controller 111, and the source driving unit 113 is connected to multiple data lines and the controller 111. The controller 111 is used to obtain a display scene of a video source signal. When the display scene of the video source signal is a target display scene, the frame rate of the video source signal is reduced to a target frame rate, and a first gate control signal and a first source control signal as well as a data signal corresponding to the video source signal are output according to the target frame rate; the gate driving unit 112 is used to control the first to i-th sub-pixels to be turned on respectively through the first to i-th gate lines according to the first gate control signal; and the source driving unit 113 is used to charge the corresponding sub-pixel according to the source control signal and the data voltage corresponding to the data signal when any sub-pixel among the first to i-th sub-pixels is turned on. In this embodiment, the first gate control signal is a control signal output by the controller 111 according to the row synchronization signal, and the source control signal is a control signal output according to the enable signal; when the rising edge of the row synchronization signal comes, the gate driving unit 112 will control the sub-pixels of the corresponding row to be turned on, and when the rising edge of the enable signal comes, the source driving unit 113 will control the corresponding sub-pixels to be charged according to the data voltage.

[0094] The driving module 10 in the present application obtains the display scene of the video source signal. When the screen display of the video source signal has a low refresh rate requirement, the charging time of each row of sub-pixels is increased by reducing the frame rate, thereby effectively alleviating the problem of uneven brightness of the display panel 20 caused by insufficient charging of sub-pixels.

[0095] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0096] The above is a detailed introduction to the driving method of the display panel provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for driving a display panel, wherein: The display panel includes a plurality of pixels, each pixel includes first to i-th sub-pixels of i different colors; the first to i-th sub-pixels in a pixel are connected to a data line in common, and are connected to first to i-th gate lines respectively, and each gate line corresponds to a row of sub-pixels; The driving method of the display panel includes: Obtaining a display scene of a video source signal; When the display scene of the video source signal is the target display scene, when the first to i-th sub-pixels are controlled to be charged alternately in sequence within a frame display period, the charging time of each row of sub-pixels is increased by the target time, so that the display panel displays the picture corresponding to the video source signal.

2. The method for driving a display panel according to claim 1, wherein: The first to the i-th sub-pixels in a pixel are connected to a data line in common, and are connected to the first to the i-th gate lines respectively, and each gate line corresponds to a row of sub-pixels.

3. The method for driving a display panel according to claim 2, wherein: Increasing the charging time of each row of sub-pixels by a target time comprises: Acquire the actual frame rate of the video source signal, and reduce the actual frame rate of the video source signal to a target frame rate; A corresponding control signal is output according to the target frame rate to charge each row of the sub-pixels, so that the charging time of each row of the sub-pixels increases by the target time.

4. The method for driving a display panel according to claim 3, wherein: The acquiring the actual frame rate of the video source signal and reducing the actual frame rate of the video source signal to the target frame rate comprises: Obtaining an actual frame rate of the video source signal and a mapping relationship between a preset frame rate and time; According to the mapping relationship and the actual frame rate of the video source signal, acquiring the target frame rate corresponding to the target time; The actual frame rate of the video source signal is reduced to the target frame rate.

5. The method for driving a display panel according to claim 4, wherein: The control signal includes a line synchronization signal and an enable signal; the interval from the falling edge of the line synchronization signal to the first rising edge of the enable signal after the falling edge is the first time, and the interval from the rising edge of the enable signal to the first falling edge after the rising edge is the second time, and the second time is the charging time.

6. A method for driving a display panel, wherein: The display panel includes a plurality of pixels; and the driving method of the display panel includes: Acquire a display scene and a frame rate of a video source signal, and use the frame rate of the video source signal as an initial frame rate; When the display scene of the video source signal is the target display scene, reducing the initial frame rate to a first frame rate, and controlling the first to i-th sub-pixels to be alternately charged in sequence within a frame display period according to the first frame rate, so that the display panel displays a picture corresponding to the video source signal; When the smoothness of the picture displayed by the display panel controlled according to the first frame rate reaches the target smoothness, the first frame rate is stored as the first target frame rate according to the external control instruction, and the charging time corresponding to the first target frame rate is stored as the first target charging time.

7. The method for driving a display panel according to claim 6, wherein: The display panel driving method further includes: When the display scene of the video source signal is a target display scene, reducing the initial frame rate to a second frame rate, and controlling the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the second frame rate, so that the display panel displays a picture corresponding to the video source signal; wherein the first frame rate and the second frame rate are different; When the smoothness of the picture displayed by the display panel controlled according to the second frame rate reaches the target smoothness, the second frame rate is stored as the second target frame rate according to the external control instruction, and the charging time corresponding to the second target frame rate is stored as the second target charging time.

8. The method for driving a display panel according to claim 7, wherein: The display panel driving method further includes: When the smoothness of the picture displayed by the display panel controlled according to the first frame rate or the second frame rate does not reach the target smoothness, reducing the initial frame rate to a third frame rate; According to the third frame rate, the first to the i-th sub-pixels are controlled to alternately follow each other in a frame display period. Charging so that the display panel displays a picture corresponding to the video source signal; When the smoothness of the picture displayed by the display panel controlled according to the third frame rate reaches the target smoothness, the external control instruction stores the third frame rate as the third target frame rate, and stores the charging time corresponding to the third target frame rate as the third target charging time.

9. The method for driving a display panel according to claim 8, wherein: The display panel driving method further includes: Detect the number of total target frame rates stored; When the number of the total target frame rates is less than a preset number, the video source signal is replaced.

10. The method for driving a display panel according to claim 6, wherein: The display panel driving method further includes: A first target time is obtained according to the first target charging time corresponding to the first target frame rate and the initial charging time corresponding to the initial frame rate, and the first target time is stored.

11. A display device, wherein: include: A display panel, the display panel comprising a plurality of pixels, each pixel comprising first to i-th sub-pixels of i different colors; A driving module, the driving module is connected to the pixels in each row, and the driving module is used for: Obtaining a display scene of a video source signal; When the display scene of the video source signal is the target display scene, when the first to i-th sub-pixels are controlled to be charged alternately in sequence within a frame display period, the charging time of each row of sub-pixels is increased by the target time, so that the display panel displays the picture corresponding to the video source signal.

12. The display device according to claim 11, wherein: The first to the i-th sub-pixels in a pixel are connected to a data line in common, and are connected to the first to the i-th gate lines respectively, and each gate line corresponds to a row of sub-pixels; 13. The display device according to claim 12, wherein: The driving module is specifically used for: Acquire the actual frame rate of the video source signal, and reduce the actual frame rate of the video source signal to a target frame rate; A corresponding control signal is output according to the target frame rate to charge each row of the sub-pixels, so that the charging time of each row of the sub-pixels increases by the target time.

14. The display device according to claim 13, wherein: The driving module is also specifically used for: Obtaining an actual frame rate of the video source signal and a mapping relationship between a preset frame rate and time; According to the mapping relationship and the actual frame rate of the video source signal, acquiring the target frame rate corresponding to the target time; The actual frame rate of the video source signal is reduced to the target frame rate.

15. The display device according to claim 14, wherein: The control signal includes a line synchronization signal and an enable signal; the interval from the falling edge of the line synchronization signal to the first rising edge of the enable signal after the falling edge is the first time, and the interval from the rising edge of the enable signal to the first falling edge after the rising edge is the second time, and the second time is the charging time.

16. A display device, wherein: include: A display panel, the display panel comprising a plurality of pixels, each pixel comprising first to i-th sub-pixels of i different colors; A driving module, the driving module is connected to the pixels in each row, and the driving module is used for: Acquire a display scene and a frame rate of a video source signal, and use the frame rate of the video source signal as an initial frame rate; When the display scene of the video source signal is the target display scene, reducing the initial frame rate to a first frame rate, and controlling the first to i-th sub-pixels to be alternately charged in sequence within a frame display period according to the first frame rate, so that the display panel displays a picture corresponding to the video source signal; When the smoothness of the picture displayed by the display panel controlled according to the first frame rate reaches the target smoothness, the first frame rate is stored as the first target frame rate according to the external control instruction, and the charging time corresponding to the first target frame rate is stored as the first target charging time.

17. The display device according to claim 16, wherein: The driving module is also used for: When the display scene of the video source signal is the target display scene, the initial frame rate is reduced to a second frame rate, and controlling the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the second frame rate, so that the display panel displays a picture corresponding to the video source signal; wherein the first frame rate and the second frame rate are different; When the smoothness of the picture displayed by the display panel controlled according to the second frame rate reaches the target smoothness, the second frame rate is stored as the second target frame rate according to the external control instruction, and the charging time corresponding to the second target frame rate is stored as the second target charging time.

18. The display device according to claim 17, wherein: The driving module is also used for: When the smoothness of the picture displayed by the display panel controlled according to the first frame rate or the second frame rate does not reach the target smoothness, reducing the initial frame rate to a third frame rate; Controlling the first to i-th sub-pixels to be charged alternately in sequence within a frame display period according to the third frame rate, so that the display panel displays a picture corresponding to the video source signal; When the smoothness of the picture displayed by the display panel controlled according to the third frame rate reaches the target smoothness, the external control instruction stores the third frame rate as the third target frame rate, and stores the charging time corresponding to the third target frame rate as the third target charging time.

19. The display device according to claim 18, wherein: The driving module is also used for: Detect the number of total target frame rates stored; When the number of the total target frame rates is less than a preset number, the video source signal is replaced.

20. The display device according to claim 16, wherein: The driving module is also used for: A first target time is obtained according to the first target charging time corresponding to the first target frame rate and the initial charging time corresponding to the initial frame rate, and the first target time is stored.

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