Display module, driving method thereof, and display device

Abstract

The application provides a display module, a driving method thereof and a display device. The display module comprises a gate driving circuit and a display panel. The display area of the display panel comprises a plurality of pixel rows. Each pixel row comprises a plurality of repeating units. Each repeating unit comprises a first pixel unit and a second pixel unit. When it is monitored that the display picture of the display area is from black to white, the gate driving circuit drives and scans each pixel row row by row in a first driving mode. When it is monitored that the display picture of the display area is from black to white, the gate driving circuit is switched to a second driving mode to drive and scan the pixel row corresponding to the black-to-white display picture row by row. The square wave width duration of the scanning signal in the second driving mode is smaller than that in the first driving mode. The effective charging time of the first pixel unit and the second pixel unit is equal, so that the visual brightness is consistent, and the problem of pixel trailing when the display picture of the display module is from black to white is improved.

Description

Technical Field

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

[0002] Dual Gate technology is now widely used in display modules. It can not only save IC (Integrated Circuit) costs, but also reduce the number of ICs in high PPI (pixels per inch) products and improve display module bonding defects.

[0003] The existing Dual Gate pixel structure is characterized by two gate lines connected to each row of pixels. Subpixels connected to different gate lines can be connected to the same data line. This pixel structure can reduce the driving power consumption of the display module.

[0004] However, existing display modules with a Dual Gate pixel structure have a technical problem of black ghosting when the displayed image changes from black to white. Summary of the Invention

[0005] This application addresses the shortcomings of existing methods by proposing a display module, its driving method, and a display device to solve the technical problem of black ghosting in existing display modules with Dual Gate pixel structures when the displayed image changes from black to white.

[0006] In a first aspect, embodiments of this application provide a display module, including a gate driving circuit and a display panel. The display area of ​​the display panel includes multiple pixel rows, each pixel row includes multiple repeating units, and each repeating unit includes a first pixel unit and a second pixel unit. The first pixel unit is electrically connected to the gate driving circuit through an even number of gate lines, and the second pixel unit is electrically connected to the gate driving circuit through an odd number of gate lines.

[0007] When no black-to-white transition is detected in the display area, the gate drive circuit adopts the first drive mode to drive and scan each pixel row line by line.

[0008] When the display screen in the display area is detected to change from black to white, the gate drive circuit switches to the second drive mode and drives and scans the pixel row corresponding to the black-to-white change of the display screen line by line.

[0009] The square wave width duration of the scanning signal in the second driving mode is less than that of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time.

[0010] Alternatively, in two adjacent frames, one frame is displayed by driving and scanning each pixel row line by line, and for each pixel row, the second pixel unit connected by the odd-numbered gate lines is driven and scanned first pixel unit connected by the even-numbered gate lines first; the other frame is displayed by driving and scanning each pixel row line by line, and for each pixel row, the first pixel unit connected by the even-numbered gate lines is driven and scanned first pixel unit connected by the even-numbered gate lines first, and then the second pixel unit connected by the odd-numbered gate lines second.

[0011] In one possible implementation, the square wave width duration of the scan signal in the first driving mode is greater than the half-line pixel scan driving time.

[0012] In one possible implementation, a first driving method and a second driving method are used, in which each pixel row first drives the second pixel unit connected by odd-numbered gate lines, and then drives the first pixel unit connected by even-numbered gate lines.

[0013] In one possible implementation, during odd-numbered frames, each pixel row is scanned sequentially, and for each pixel row, the second pixel unit connected by the odd-numbered gate lines is scanned first, and then the first pixel unit connected by the even-numbered gate lines is scanned; during even-numbered frames, each pixel row is scanned sequentially, and for each pixel row, the first pixel unit connected by the even-numbered gate lines is scanned first, and then the second pixel unit connected by the odd-numbered gate lines is scanned.

[0014] Alternatively, in even-numbered frames, each pixel row is scanned sequentially, and in each pixel row, the second pixel unit connected by the odd-numbered gate lines is scanned first, and then the first pixel unit connected by the even-numbered gate lines is scanned; in odd-numbered frames, each pixel row is scanned sequentially, and in each pixel row, the first pixel unit connected by the even-numbered gate lines is scanned first, and then the second pixel unit connected by the odd-numbered gate lines is scanned.

[0015] In one possible implementation, the next row scan signal is delayed by half a row of pixel scan driving time compared to the current row scan signal.

[0016] In one possible implementation, the first pixel unit includes two pixels, and the second pixel unit includes two pixels, each pixel including a red sub-pixel, a green sub-pixel, and a blue sub-pixel;

[0017] The first pixel unit is connected to the even-numbered gate lines, and the second pixel unit is connected to the odd-numbered gate lines;

[0018] In a repeating unit, the corresponding sub-pixels of the same color in the first and second pixel units are connected to the same data line.

[0019] One possible implementation also includes a timing controller;

[0020] The timing controller is used to monitor the data signals of each pixel row in the display area line by line, and determine whether the display screen changes from black to white based on the data signals, and determine the pixel row corresponding to the black-to-white change in the display screen.

[0021] Secondly, embodiments of this application provide a display device, including the display module as described in the first aspect.

[0022] Thirdly, embodiments of this application provide a driving method for a display module, including:

[0023] The system monitors the data signals received by each pixel row in the display area in real time, and determines whether there is a black-to-white transition in the display screen based on the data signals, and determines the pixel row corresponding to the black-to-white transition in the display screen;

[0024] When it is determined that there is no black-to-white transition in the display screen, the control gate drive circuit adopts the first drive mode to drive and scan each pixel row line by line.

[0025] When it is determined that there is a black-to-white transition in the display screen, the control gate drive circuit switches to the second drive mode and drives and scans the pixel row corresponding to the black-to-white transition in the display screen line by line.

[0026] Wherein: the square wave width duration of the scanning signal in the second driving mode is less than the square wave width duration of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time.

[0027] Fourthly, embodiments of this application provide a driving method for a display module, including:

[0028] Two adjacent frames are displayed. In one frame, each pixel row is driven to scan sequentially. For each pixel row, the second pixel unit connected by the odd-numbered gate lines is driven to scan first, and then the first pixel unit connected by the even-numbered gate lines is driven to scan.

[0029] Another frame of the display screen drives and scans each pixel row line by line, and for each pixel row, the first pixel unit connected by the even-numbered gate lines is scanned first, and then the second pixel unit connected by the odd-numbered gate lines is scanned.

[0030] The beneficial technical effects of the technical solutions provided in this application include:

[0031] The display module provided in this application embodiment, when no black-to-white transition is detected in the display area, uses a first driving mode to drive and scan each pixel row line by line; when a black-to-white transition is detected in the display area, the gate driving circuit switches to a second driving mode to drive and scan the pixel row corresponding to the black-to-white transition line by line; the square wave width duration of the scanning signal in the second driving mode is less than the square wave width duration of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time, so that the effective charging time of the first pixel unit and the second pixel unit is equal, thereby achieving consistent visual brightness and improving the pixel ghosting problem when the display screen of the display module transitions from black to white.

[0032] Alternatively, the display module provided in this embodiment uses progressive scanning for odd-numbered frames and a drive method that swaps odd and even numbers for even-numbered frames. Using this drive method, the brightness of the second pixel unit is lower than that of the first pixel unit in odd-numbered frames, and higher in even-numbered frames. During normal display, the total brightness of the first and second pixel units is consistent, thereby improving the pixel ghosting problem when the display module's screen transitions from black to white.

[0033] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0035] Figure 1 This is a schematic diagram of a Dual Gate pixel structure in related technologies;

[0036] Figure 2 for Figure 1 A waveform diagram of the existing gate driving method for pixel structures;

[0037] Figure 3 This is a diagram illustrating the ghosting pixels when transitioning from black to white.

[0038] Figure 4 The diagram shows the waveform of the scanning pixel driven by the first driving method, where (a) is the driving waveform of the second pixel unit Pixel2 and (b) is the driving waveform of the first pixel unit Pixel1.

[0039] Figure 5The diagram shows the waveform of the scanning pixel driven by the second driving method, where (a) is the driving waveform of the second pixel unit Pixel2 and (b) is the driving waveform of the first pixel unit Pixel1.

[0040] Figure 6a A waveform diagram illustrating the gate-driven scanning pixel in the first frame;

[0041] Figure 6b A waveform diagram illustrating the second frame's gate-driven scanning pixel operation;

[0042] Figure 7a This is a waveform diagram illustrating the gate-driven method for driving the scanned pixels in the first half of the frame.

[0043] Figure 7b This is a waveform diagram illustrating the gate-driven method for driving the scanned pixels in the latter half of the frame. Detailed Implementation

[0044] This application is described in detail below. Examples of embodiments of this application are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of this application are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0046] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0047] See Figure 1 The diagram shows a Dual Gate pixel structure in related technologies. Its main feature is that four pixels in a single row (each pixel includes three RGB sub-pixels) form a basic repeating unit. These four pixels are driven by two gate lines, one above and one below, and sub-pixels of the same color connected to different gate lines are connected to the same data line. When displaying a solid color image, this pixel structure allows the data lines to be driven in a column-inverted manner, reducing the driving power consumption of the display module.

[0048] See Figure 2 As shown, G1, G2, G3, and G4 correspond to the driving waveforms of each row of gate lines, using a row-by-row driving scan method. The width of the driving square wave is N×H, where N is an integer greater than 1. The square wave waveform of G2 is delayed by 1H time compared to the square wave waveform of G1 (1H≈1frame / Gate resolution, where Gate refers to G1, G2, G3, G4, etc., i.e., 1H is approximately the time for half a row of driving scans), the square wave waveform of G3 is delayed by 1H time compared to the square wave waveform of G2, and so on.

[0049] However, when the display screen of a Dual Gate display module changes from black to white, evenly spaced black dots can be visually observed as trailing shadows on the black screen. For example... Figure 3 As shown, the pixel brightness of the second pixel unit Pixel2 is lower than that of the first pixel unit Pixel1.

[0050] Mechanism explanation as follows Figure 4In the conventional driving method shown, since the gate line G3 connected to the second pixel unit Pixel2 turns on earlier than the gate line G4 connected to the first pixel unit Pixel1, when the display screen changes from black to white, the data signal goes from low to high. Therefore, the effective charging time of the second pixel unit Pixel2 is less than that of the first pixel unit Pixel1, resulting in the charging rate of the second pixel unit Pixel2 being lower than that of the first pixel unit Pixel1, which manifests as black dot ghosting in the display screen.

[0051] To address the aforementioned issues, current technologies reduce the uniform black trailing caused by precharge differences between two pixel units (Pixel1 and Pixel2) by increasing the Gata voltage (gate voltage). However, this approach leads to an increase in the power consumption of the display module.

[0052] In view of the above problems, this application provides a display module and its driving method and display device, which aims to solve the above-mentioned technical problems in related technologies.

[0053] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0054] This application provides a display module, which includes a gate driving circuit, a timing controller, and a display panel. See also... Figure 1 and Figure 3 As shown, the display area of ​​the display panel includes multiple pixel rows, each pixel row includes multiple repeating units 10, and each repeating unit 10 includes a first pixel unit Pixel1 and a second pixel unit Pixel2; the first pixel unit Pixel1 is electrically connected to the gate driving circuit through an even number of gate lines (such as G2, G4), and the second pixel unit Pixel2 is electrically connected to the gate driving circuit through an odd number of gate lines (such as G1, G3).

[0055] Specifically, the first pixel unit Pixel1 includes two pixels, and the second pixel unit Pixel2 includes two pixels, each pixel including a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The first pixel unit Pixel1 is connected to even-numbered gate lines, and the second pixel unit Pixel2 is connected to odd-numbered gate lines. In a repeating unit 10, corresponding sub-pixels of the same color in the first pixel of the first pixel unit Pixel1 and the second pixel unit Pixel2 are connected to the same data line. Specifically, sub-pixels of the same color in the first pixel of the first pixel unit Pixel1 and the second pixel unit Pixel2 are connected to the same data line, and sub-pixels of the same color in the second pixel of the first pixel unit Pixel1 and the second pixel unit Pixel2 are connected to the same data line (see [reference]). Figure 1 ).

[0056] The following describes three driving methods for display modules using the aforementioned Dual Gate pixel structure:

[0057] The first driving method: such as Figure 4 and Figure 5 As shown, the timing controller monitors the data signals (Data signals) of each pixel row in the display area line by line, and determines whether a black-to-white transition occurs based on the data signals, and identifies the corresponding pixel row. Specifically, if the timing controller detects a data signal transitioning from 0 grayscale to a higher grayscale (e.g., 255 grayscale), it determines that the display has transitioned from black to white; if the timing controller does not detect a data signal transitioning from 0 grayscale to a higher grayscale, it determines that a black-to-white transition does not occur.

[0058] When the timing controller does not detect a black-to-white transition in the display area, the gate drive circuit is configured to: use the first driving mode to drive and scan each pixel row line by line (e.g. Figure 2 (as shown); when the timing controller detects that the display screen in the display area changes from black to white, the gate drive circuit is configured to: switch to the second drive mode, and drive and scan the pixel row corresponding to the black-to-white change in the display screen line by line (as shown). Figure 5 (As shown). The square wave width duration of the scanning signal in the second driving mode is less than that of the square wave width duration of the scanning signal in the first driving mode.

[0059] Optionally, such as Figure 4 As shown, the square wave width of the scanning signal in the first driving mode is longer than the time required to drive half a row of pixels. For example, the square wave duration of the scanning signals (G1, G2, G3, G4…) in the first driving mode is N×H, where N is an integer greater than 1. The next row scanning signal Gn+1 (e.g., G4) is delayed by half a row of pixels (e.g., 1H) compared to the current row scanning signal Gn (e.g., G3). Here, 1H ≈ 1 frame / Gate resolution, where Gate refers to G1, G2, G3, G4…, meaning 1H is approximately the time required to drive half a row of pixels. In the first driving mode (pre-charge mode), the effective charging time of each pixel row can be increased, ensuring sufficient grayscale voltage supplied to each pixel row and guaranteeing display quality.

[0060] Optionally, such as Figure 5As shown, the square wave width and duration of the scanning signal in the second driving mode are less than or equal to the half-line pixel scan driving time. For example, the square wave duration of the scanning signals (G1, G2, G3, G4...) in the second driving mode is ≤1H. The next line scanning signal Gn+1 (e.g., G4) is delayed by half a line pixel scan driving time (e.g., 1H) compared to the current line scanning signal Gn (e.g., G3). In the second driving mode (no pre-charge mode), the effective charging time of the second pixel unit Pixel2 and the first pixel unit Pixel1 is equal (or consistent), and the visual brightness is consistent, improving the pixel ghosting problem when the display module's screen changes from black to white.

[0061] Optionally, when driving the scan using the first driving method and the second driving method, each pixel row first drives the scanning of the second pixel unit Pixel2 connected by the odd-numbered gate lines, and then drives the scanning of the first pixel unit Pixel1 connected by the even-numbered gate lines.

[0062] The display module provided in this application embodiment, when no black-to-white transition is detected in the display area, uses a first driving mode to drive and scan each pixel row line by line; when a black-to-white transition is detected in the display area, the gate driving circuit switches to a second driving mode to drive and scan the pixel row corresponding to the black-to-white transition line by line; the square wave width duration of the scanning signal in the second driving mode is less than the square wave width duration of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time, so that the effective charging time of the first pixel unit and the second pixel unit is equal, thereby achieving consistent visual brightness and improving the pixel ghosting problem when the display screen of the display module transitions from black to white.

[0063] The second driving method: In two adjacent display frames, in one display frame, each pixel row is driven and scanned line by line, and in each pixel row, the second pixel unit Pixel2 connected by the odd-numbered gate lines is driven and scanned first pixel unit Pixel1 connected by the even-numbered gate lines first; in the other display frame, each pixel row is driven and scanned line by line, and in each pixel row, the first pixel unit Pixel1 connected by the even-numbered gate lines is driven and scanned first pixel unit Pixel1 connected by the even-numbered gate lines first, and then the second pixel unit Pixel2 connected by the odd-numbered gate lines first.

[0064] In one alternative implementation, such as Figure 6a and Figure 6b As shown, in odd-numbered frames, each pixel row is scanned sequentially, and for each pixel row, the second pixel unit Pixel2 connected by odd-numbered gate lines (such as G1 and G3) is scanned first, followed by the first pixel unit Pixel1 connected by even-numbered gate lines (such as G2 and G4); Figure 6bAs shown, in even-numbered frames, each pixel row is scanned sequentially. For each pixel row, the first pixel unit (Pixel1) connected by even-numbered gate lines (such as G2 and G4) is scanned first, followed by the second pixel unit (Pixel2) connected by odd-numbered gate lines (such as G1 and G3). The next row scan signal is delayed by half a row of pixel scan driving time compared to the current row scan signal.

[0065] In another optional implementation, during even-numbered frames, each pixel row is scanned sequentially, with the second pixel unit Pixel2 connected to odd-numbered gate lines (such as G1 and G3) being scanned first, followed by the first pixel unit Pixel1 connected to even-numbered gate lines (such as G2 and G4). During odd-numbered frames, each pixel row is scanned sequentially, with the first pixel unit Pixel1 connected to even-numbered gate lines (such as G2 and G4) being scanned first, followed by the second pixel unit Pixel2 connected to odd-numbered gate lines (such as G1 and G3) (not shown in the figure). The next row scan signal is delayed by half a row of pixel scan driving time compared to the current row scan signal.

[0066] In this embodiment, odd-numbered frames use a progressive scan method (i.e., G1→G2→G3→G4….), while even-numbered frames use an odd-even swap driving method (i.e., G2→G1→G4→G3….). The square wave width and duration of the scan signal are N×H, where N is an integer greater than 1. The next row scan signal Gn+1 (e.g., G4) is delayed by half a row of pixel scan driving time (e.g., 1H) compared to the current row scan signal Gn (e.g., G3). Using this driving method, in odd-numbered frames, the brightness of the second pixel unit Pixel2 is lower than that of the first pixel unit Pixel1, and in even-numbered frames, the brightness of the second pixel unit Pixel2 is higher than that of the first pixel unit Pixel1. During normal display, the total brightness of the first pixel unit Pixel1 and the second pixel unit Pixel2 is consistent, thereby improving the pixel ghosting problem when the display module's screen changes from black to white.

[0067] The third driving method: Two half-frames of a single frame are displayed. In one half-frame, the second pixel unit connected by the odd-numbered gate lines is progressively driven and scanned line by line. In the other half-frame, the first pixel unit connected by the even-numbered gate lines is progressively driven and scanned line by line.

[0068] Optionally, such as Figure 7a and Figure 7bAs shown, in a single frame of the display, during the first half of the frame, the second pixel unit Pixel2, connected to odd-numbered gate lines (such as G1 and G3), is scanned line by line; during the second half of the frame, the first pixel unit Pixel1, connected to even-numbered gate lines (such as G2 and G4), is scanned line by line. The next line scan signal Gn+1 (such as G4) is delayed by half a line of pixel scan driving time (such as 1H) compared to the current line scan signal Gn (such as G3).

[0069] Optionally, in a single frame of display, during the first half of the frame, the first pixel unit Pixel1 connected to even-numbered gate lines (such as G2 and G4) is scanned line by line; during the second half of the frame, the second pixel unit Pixel2 (not shown in the figure) connected to odd-numbered gate lines (such as G1 and G3) is scanned line by line. The next row scan signal Gn+1 (such as G4) is delayed by half a row of pixel scan driving time (such as 1H) compared to the current row scan signal Gn (such as G3).

[0070] In this embodiment, when displaying one frame, the first half of the frame uses progressive driving of the second pixel unit Pixel2 connected by odd-numbered gate lines (i.e., G1→G3→G5→G7….), and the second half of the frame uses progressive driving of the first pixel unit Pixel1 connected by even-numbered gate lines (i.e., G2→G4→G6→G8….). The square wave width and duration of the scanning signal are N×H, where N is an integer greater than 1. The next row scanning signal Gn+1 (e.g., G4) is delayed by half a row of pixel scanning driving time (e.g., 1H) compared to the current row scanning signal Gn (e.g., G3). The driving scanning waveforms of the first pixel unit Pixel1 and the second pixel unit Pixel2 are the same. Using this driving method, the second pixel unit Pixel2 is displayed in the first half of the frame, and the first pixel unit Pixel1 is displayed in the second half of the frame. During normal display, the effective charging time of the first pixel unit Pixel1 and the second pixel unit Pixel2 are equal, and the total brightness is consistent, thereby improving the pixel ghosting problem when the display module's screen changes from black to white.

[0071] Based on the same inventive concept, embodiments of this application provide a display device, including a display module as provided in any of the above embodiments.

[0072] The display device provided in this application has the same inventive concept and the same beneficial effects as the previous embodiments. For the contents not shown in detail in this display device, please refer to the previous embodiments, and they will not be repeated here.

[0073] Based on the same inventive concept, embodiments of this application provide a driving method for a display module, including:

[0074] The system monitors the data signals received by each pixel row in the display area in real time, and determines whether the display screen has changed from black to white based on the data signals, and determines the pixel row corresponding to the black-to-white change in the display screen;

[0075] When it is determined that there is no black-to-white transition in the display screen, the gate drive circuit is controlled to use the first driving mode to drive and scan each pixel row line by line; specifically, the timing controller controls the gate drive circuit to use the first driving mode.

[0076] When it is determined that there is a black-to-white transition in the display screen, the gate drive circuit is switched to the second drive mode to drive and scan each pixel row corresponding to the black-to-white transition in the display screen line by line; specifically, the timing controller controls the gate drive circuit to switch to the second drive mode.

[0077] Wherein: the square wave width duration of the scanning signal in the second driving mode is less than the square wave width duration of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time.

[0078] Based on the same inventive concept, embodiments of this application provide a driving method for a display module, including:

[0079] Two adjacent frames are displayed. In one frame, each pixel row is driven to scan sequentially. For each pixel row, the second pixel unit connected by the odd-numbered gate lines is driven to scan first, and then the first pixel unit connected by the even-numbered gate lines is driven to scan.

[0080] Another frame of the display screen drives and scans each pixel row line by line, and for each pixel row, the first pixel unit connected by the even-numbered gate lines is scanned first, and then the second pixel unit connected by the odd-numbered gate lines is scanned.

[0081] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0082] (1) In the display module provided in this application embodiment, when no black-to-white transition is detected in the display area, the gate driving circuit adopts the first driving mode to drive and scan each pixel row line by line; when the display area is detected to transition from black to white, the gate driving circuit switches to the second driving mode to drive and scan the pixel row corresponding to the black-to-white transition in the display area line by line; the square wave width duration of the scanning signal of the second driving mode is less than the square wave width duration of the scanning signal of the first driving mode, and the square wave width duration of the scanning signal of the second driving mode is less than or equal to the half-line pixel scanning driving time, so that the effective charging time of the first pixel unit and the second pixel unit are equal, thereby achieving consistent visual brightness and improving the pixel ghosting problem when the display screen of the display module transitions from black to white.

[0083] (2) In this embodiment, odd-numbered frames use a progressive scan method (i.e., G1→G2→G3→G4….), and even-numbered frames use an odd-even swap driving method (i.e., G2→G1→G4→G3….). The square wave width and duration of the scan signal are N×H, where N is an integer greater than 1. The next row scan signal Gn+1 (e.g., G4) is delayed by half a row of pixel scan driving time (e.g., 1H) compared to the current row scan signal Gn (e.g., G3). Using this driving method, in odd-numbered frames, the brightness of the second pixel unit Pixel2 is lower than that of the first pixel unit Pixel1, and in even-numbered frames, the brightness of the second pixel unit Pixel2 is higher than that of the first pixel unit Pixel1. During normal display, the total brightness of the first pixel unit Pixel1 and the second pixel unit Pixel2 is consistent, thereby improving the pixel ghosting problem when the display module changes from black to white.

[0084] (3) In this embodiment, when displaying a frame, the first half of the frame uses progressive driving of the second pixel unit Pixel2 connected by odd-numbered gate lines (i.e., G1→G3→G5→G7….), and the second half of the frame uses progressive driving of the first pixel unit Pixel1 connected by even-numbered gate lines (i.e., G2→G4→G6→G8….). The square wave width of the scanning signal is N×H, where N is an integer greater than 1. The next row scanning signal Gn+1 (e.g., G4) is delayed by half a row of pixel scanning driving time (e.g., 1H) compared to the current row scanning signal Gn (e.g., G3). The driving scanning waveforms of the first pixel unit Pixel1 and the second pixel unit Pixel2 are the same. Using this driving method, the second pixel unit Pixel2 is displayed in the first half of the frame, and the first pixel unit Pixel1 is displayed in the second half of the frame. During normal display, the effective charging time of the first pixel unit Pixel1 and the second pixel unit Pixel2 is equal, and the total brightness is consistent, thereby improving the pixel ghosting problem when the display module changes from black to white.

[0085] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0086] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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.

[0087] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0088] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication 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.

[0089] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0090] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A display module, characterized in that, The device includes a gate driving circuit, a display panel, and a timing controller. The display area of ​​the display panel includes multiple pixel rows, each pixel row includes multiple repeating units, and each repeating unit includes a first pixel unit and a second pixel unit. The first pixel unit is electrically connected to the gate driving circuit through an even number of gate lines, and the second pixel unit is electrically connected to the gate driving circuit through an odd number of gate lines. The timing controller is used to monitor the data signals of each pixel row of the display area line by line, and determine whether the display screen changes from black to white based on the data signals, and determine the pixel row corresponding to the black-to-white change in the display screen; When no black-to-white transition is detected in the display area, the gate driving circuit adopts the first driving method to drive and scan each pixel row line by line. When the display screen in the display area is detected to change from black to white, the gate driving circuit switches to the second driving mode and drives and scans the pixel row corresponding to the black-to-white change of the display screen line by line. The square wave width duration of the scanning signal in the second driving mode is less than that of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time.

2. The display module according to claim 1, characterized in that, The square wave width duration of the scanning signal in the first driving mode is greater than the half-line pixel scanning driving time.

3. The display module according to claim 1, characterized in that, Using the first driving method and the second driving method, each pixel row first drives and scans the second pixel unit connected by the odd number of gate lines, and then drives and scans the first pixel unit connected by the even number of gate lines.

4. The display module according to claim 1, characterized in that, The next row scan signal is delayed by half a row of pixel scan driving time compared to the current row scan signal.

5. The display module according to claim 1, characterized in that, The first pixel unit includes two pixels, and the second pixel unit includes two pixels, each pixel including a red sub-pixel, a green sub-pixel and a blue sub-pixel; The first pixel unit is connected to an even number of gate lines, and the second pixel unit is connected to an odd number of gate lines; In a repeating unit, the corresponding sub-pixels of the same color in the first and second pixel units are connected to the same data line.

6. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 5.

7. A driving method for a display module, characterized in that, Applied to the display module as described in any one of claims 1 to 5, the driving method includes: The system monitors the data signals received by each pixel row in the display area in real time, and determines whether there is a black-to-white transition in the display screen based on the data signals, and determines the pixel row corresponding to the black-to-white transition in the display screen; When it is determined that there is no black-to-white transition in the display screen, the control gate drive circuit adopts the first drive mode to drive and scan each pixel row line by line. When it is determined that there is a black-to-white transition in the display screen, the control gate drive circuit switches to the second drive mode and drives and scans the pixel row corresponding to the black-to-white transition in the display screen line by line. Wherein: the square wave width duration of the scanning signal in the second driving mode is less than the square wave width duration of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is less than or equal to the half-line pixel scanning driving time.

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