Spliced screen and control method thereof

Abstract

The invention discloses a spliced screen and a control method thereof. The spliced screen comprises a plurality of display modules arranged in an array; in the column direction of the array, the difference of the time of two adjacent rows of pixels of two adjacent display modules for receiving data signals is at most one row scanning period.

Description

A splicing screen and control method thereof Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a splicing screen and a control method thereof. Background Art

[0002] Currently, the GOA drive scanning method for low-temperature polysilicon (LTPS) Mini / Micro LED splicing displays is that each splicing module starts splicing scanning at the same time.

[0003] This scanning method results in a physical time difference between the first and last rows of pixels in two adjacent display modules in the column direction receiving data signals, which is the time difference in image display. Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the structure of a spliced ​​screen, and Figure 2 is a timing diagram of the display modules in the spliced ​​screen. The spliced ​​screen in Figure 1 is composed of two identical display modules spliced ​​together. As shown in Figure 1, a display module contains 180 scan lines, and the row scan time is 1H (H is the row scan period). The data signal reception time of the last row of pixels in the upper display module and the first row of pixels in the lower display module differ by 180×H=14.4ms. This causes a certain amount of misalignment in the image at the splicing position. Figure 3 shows a schematic diagram of the spliced ​​screen display. The image frame received by the spliced ​​screen shows a vertical straight line. However, due to the 14.4ms difference in the time when the first and last rows of pixels of the two display modules receive data signals, the image actually displayed on the spliced ​​screen is a straight line with misalignment at the splicing position.

[0004] When the spliced ​​screen plays fast-moving images, the misalignment of the two adjacent display modules in the column direction at the splicing position will be aggravated, showing obvious picture asynchrony and picture tearing, affecting the screen display quality.

[0005] Summary of the Invention

[0006] The embodiments of the present disclosure provide a splicing screen and a control method thereof to solve the above-mentioned problems existing in the prior art.

[0007] In a first aspect, to solve the above technical problems, the present disclosure provides a spliced ​​screen, including:

[0008] A plurality of display modules arranged in an array;

[0009] In the column direction of the array, the time difference between two adjacent rows of pixels of two adjacent display modules receiving data signals is at most one row scanning period.

[0010] In a possible implementation manner, the spliced ​​screen includes multiple rows of display devices, the multiple display modules are distributed in the multiple rows of display devices, and each display device includes at least two rows of display modules;

[0011] Two adjacent rows of display modules in the display device are placed in opposite directions;

[0012] In the column direction, the time difference between two adjacent rows of pixels of two adjacent display devices receiving data signals is at most one row scanning period.

[0013] In a possible implementation manner, adjacent rows of pixels in two adjacent rows of display modules in the display device correspond to pixels in the same row of the display modules.

[0014] In a possible implementation manner, the display device includes an even number of rows of display modules; and the display modules in the first row of the multiple display devices are placed in the same direction.

[0015] In a possible implementation manner, the display device includes an odd number of rows of display modules; and the display modules in the first row of the multiple display devices are placed in opposite directions.

[0016] In a possible implementation manner, the two adjacent rows of pixels of the two adjacent display modules are pixels in the same row in the corresponding display modules.

[0017] In a possible implementation manner, the pixels in the same row are pixels in the first row or pixels in the last row of the display module.

[0018] In a possible implementation manner, the display module includes a placement direction indicator located on the back of the display module;

[0019] In the front-view direction of the back side of the spliced ​​screen, the placement direction marks corresponding to the display modules placed in opposite directions are also opposite.

[0020] In a possible implementation manner, the display module further includes a cable connector, and the cable connector has a pin number identification;

[0021] In the front viewing direction of the back side of the spliced ​​screen, the placement directions of the pin number identifiers on the same cable connectors in the display modules placed in opposite directions are also opposite.

[0022] In a possible implementation manner, the display device includes an odd number of rows of display modules; the display modules in the first row of the plurality of display devices are placed in the same direction;

[0023] The splicing screen also includes:

[0024] A plurality of control signal lines and a controller, wherein the control signal lines are connected between the controller and a row of display devices;

[0025] The controller is used to provide a start signal for row scanning to the corresponding row display device through the control signal line, and receive an end signal when each row display device completes the last row of pixel scanning. The controller is also used to generate a start signal for row scanning of the next row display device based on the end signal.

[0026] In a possible implementation manner, when the end signal is the end signal of the last row of display devices, the controller generates a row scan start signal for the next frame and uses it as the row scan start signal for the first row of display devices.

[0027] In a second aspect, an embodiment of the present disclosure provides a method for controlling a spliced ​​screen, wherein the spliced ​​screen includes a plurality of display modules arranged in an array, including:

[0028] Splitting the image to be displayed into a plurality of sub-images corresponding one-to-one to the plurality of display modules;

[0029] Rotating one row of sub-images in two adjacent rows of sub-images in the image to be displayed by 180° to obtain a rotated sub-image; wherein the display module corresponding to the rotated sub-image is placed upside down;

[0030] The rotated sub-image is transmitted to the corresponding inverted display module, and the unrotated sub-image is transmitted to the corresponding upright display module; wherein the writing direction of the data signal of the inverted display module is opposite to that of the upright display module, and the scanning signal is written synchronously.

[0031] In a possible implementation manner, the control method further includes:

[0032] A row scanning signal is provided to each display module simultaneously, so that each display module scans row by row from the first row of pixels to the last row of pixels.

[0033] In one possible implementation, the multiple display modules are distributed in multiple rows of display devices, each display device includes at least two rows of display modules, one row of display modules is placed upright, and the other row of display modules is placed inverted, the display device includes an odd number of rows of display modules, and the first row of display modules in the multiple display devices are placed in the same direction;

[0034] The control method further includes:

[0035] Providing a row scanning start signal to the display device row by row; wherein the start signal is used to simultaneously provide each display module in the display device, and each display module simultaneously scans from the first row of pixels to the last row of pixels row by row according to the start signal;

[0036] Receiving a signal indicating that a row of display devices has completed scanning of the last row of pixels;

[0037] A new start signal is generated according to the end signal and provided to the next row of display devices corresponding to the row of display devices until the last row of display devices completes the last row scan.

[0038] In a possible implementation manner, the control method further includes:

[0039] receiving a signal indicating that the last row of display devices has completed scanning the last row;

[0040] Generate a row scan start signal for the next frame of picture according to an end signal of the last row of display devices completing the last row of scanning;

[0041] The row scan start signal of the next frame is used as the row scan start signal of the first row display device and provided to the first row display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic structural diagram of a spliced ​​screen;

[0043] Figure 2 is a timing diagram of the display module in the splicing screen;

[0044] Figure 3 is a schematic diagram of the splicing screen display;

[0045] FIG4 is a schematic structural diagram of a spliced ​​screen provided by an embodiment of the present disclosure;

[0046] FIG5 is a timing diagram of the scanning signal corresponding to FIG4 provided in an embodiment of the present disclosure;

[0047] FIG6 is a schematic structural diagram of another splicing screen provided by an embodiment of the present disclosure;

[0048] FIG7 is a timing diagram of the scanning signal corresponding to FIG5 provided in an embodiment of the present disclosure;

[0049] FIG8 is a schematic structural diagram of another splicing screen provided by an embodiment of the present disclosure;

[0050] FIG9 is a schematic structural diagram of a cable socket provided by an embodiment of the present disclosure;

[0051] FIG10 is a schematic diagram of the cable socket in FIG7 according to an embodiment of the present disclosure when it is inverted;

[0052] FIG11 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure;

[0053] FIG12 is a schematic structural diagram of another splicing screen provided by an embodiment of the present invention;

[0054] FIG13 is a schematic structural diagram of another splicing screen provided by an embodiment of the present invention;

[0055] FIG14 is a schematic structural diagram of another splicing screen provided in an embodiment of the present disclosure;

[0056] FIG15 is a schematic structural diagram of another splicing screen provided in an embodiment of the present disclosure;

[0057] FIG16 is a control method for a spliced ​​screen provided by an embodiment of the present disclosure;

[0058] FIG17 is a schematic structural diagram of a spliced ​​screen provided by an embodiment of the present disclosure;

[0059] FIG18 is a schematic diagram of an image to be displayed provided by an embodiment of the present disclosure;

[0060] FIG19 is an image actually displayed on the spliced ​​screen under the unimproved control method provided by an embodiment of the present disclosure;

[0061] FIG20 is an image actually displayed on the spliced ​​screen after the improved control method provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0062] The embodiments of the present disclosure provide a splicing screen and a control method thereof, which are used to solve the above-mentioned technical problems existing in the prior art.

[0063] The specific structural and functional details disclosed herein are merely representative and are used for the purpose of describing exemplary embodiments of the present disclosure. However, the present disclosure may be embodied in many alternative forms and should not be construed as being limited to only the embodiments set forth herein.

[0064] In the description of the present disclosure, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, the term "include" and any variations thereof are intended to cover non-exclusive inclusions.

[0065] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0066] The terms used herein are intended only to describe specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a", "an", "an item" used herein are also intended to include the plural. It should also be understood that the terms "comprise" and / or "include" used herein specify the presence of stated features, integers, steps, operations, units and / or components, and do not preclude the presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0067] The term "and / or" in the embodiments of the present disclosure is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0068] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described below with reference to the accompanying drawings and examples. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided to make the present disclosure more comprehensive and complete, and to fully convey the concepts of the example embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and their repeated descriptions will be omitted. The words expressing position and direction described in the present disclosure are all explained using the accompanying drawings as examples, but changes can be made as needed, and all changes are included in the scope of protection of the present disclosure. The drawings of the present disclosure are only used to illustrate relative position relationships and do not represent true proportions.

[0069] It should be noted that specific details are set forth in the following description to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in a variety of ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present disclosure. Therefore, the present disclosure is not limited to the specific embodiments disclosed below. The subsequent description of the specification is a preferred embodiment of the present disclosure, but the description is for the purpose of illustrating the general principles of the present disclosure and is not intended to limit the scope of the present disclosure. The scope of protection of the present disclosure shall be as defined by the appended claims.

[0070] A splicing screen and a control method thereof provided by an embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0071] Please refer to Figures 4 and 5. Figure 4 is a schematic structural diagram of a splicing screen provided in an embodiment of the present disclosure, and Figure 5 is a timing diagram of the scanning signal corresponding to Figure 4 provided in an embodiment of the present disclosure. The splicing screen includes:

[0072] A plurality of display modules 1 arranged in an array;

[0073] In the column direction Y of the array, the time difference between two adjacent rows of pixels of two adjacent display modules 1 receiving data signals is at most one row scanning period.

[0074] As shown in Figure 4, the spliced ​​screen includes two display modules 1 spliced ​​up and down, and the two adjacent rows of pixels of the two adjacent display modules 1 are the same row of pixels in the corresponding display module 1, that is, in the column direction Y, the last row of pixels of the upper display module 1 is adjacent to the last row of pixels of the lower display module 1. As shown in Figure 4, the scanning signals of the last rows of pixels of the two display modules 1 are the same, and the scanning signal is used to control the writing of data signals into the pixel rows. Therefore, the time when the two adjacent rows of pixels of the two display modules 1 in the spliced ​​screen corresponding to Figure 4 receive the data signal is the same (that is, there is a difference of 0 scanning cycles).

[0075] Please refer to Figures 6 and 7. Figure 6 is a structural schematic diagram of another splicing screen provided by an embodiment of the present disclosure. Figure 7 is a timing diagram of the scanning signal corresponding to Figure 6 provided by an embodiment of the present disclosure. Taking the splicing screen including two display modules 1 spliced ​​up and down as an example, the two adjacent rows of pixels of the two adjacent display modules 1 are the first and last rows of pixels in the corresponding display modules 1, that is, in the column direction Y, the last row of pixels of the upper display module 1 is adjacent to the first row of pixels of the lower display module 1. After the last row of pixels of the upper display module 1 completes the row scan, the scanning signal is provided to the first row of pixels of the lower display module 1. In this way, the time difference between the last row of pixels of the upper display module 1 and the first row of pixels of the lower display module 1 in receiving data is 1 row scanning cycle.

[0076] In the embodiment provided in the present disclosure, by making the time difference between the two adjacent rows of pixels of the two adjacent display modules 1 in the column direction Y in receiving the data signal be at most one row scanning cycle, the time difference between the two adjacent display modules 1 in the column direction Y in receiving the data signal at the splicing seam position can be minimized, thereby preventing the misalignment phenomenon at the splicing seam position. Even if the splicing screen plays a fast-moving picture, the picture at the splicing seam position will remain visually consistent, thereby preventing the occurrence of picture tearing and improving the display quality of the splicing screen.

[0077] Please refer to FIG. 8, which is a schematic structural diagram of another splicing screen provided by an embodiment of the present disclosure. The splicing screen includes multiple rows of display devices 100, and multiple display modules 1 are distributed in the multiple rows of display devices 100. Each display device 100 includes at least two rows of display modules 1;

[0078] The placement directions of two adjacent rows of display modules 1 in the display device 100 are opposite.

[0079] As shown in FIG. 8, a display device 100 includes two rows of display modules 1. In the two adjacent rows of display modules 1 in the display device 100, the first row of display modules 1 is placed upright (UP is upright), and the second display module is placed upside down (UP is upside down). This can ensure that in the column direction Y of the display device 100, the two adjacent rows of pixels of two adjacent display modules 1 receive data signals at the same time.

[0080] In FIG. 8, in the column direction Y, the time difference between the two adjacent rows of pixels of two adjacent display devices 1 receiving data signals is at most one line scan period.

[0081] It should be noted that the back of the display module 1 shown in FIG. 8 is shown.

[0082] In the embodiment provided by the present disclosure, by making the splicing screen include multiple rows of display devices 100 and distributing multiple display modules 1 in the multiple rows of display devices 100, the display devices 100 can be pre-assembled and then assembled on site, thereby improving the assembly efficiency. Making the placement directions of two adjacent rows of display modules 1 in the display device 100 opposite can ensure that the two adjacent rows of pixels of two adjacent display modules 1 in the display device 100 receive data signals at the same time; making the time difference between the two adjacent rows of pixels of two adjacent display devices 1 receiving data signals at most one line scan period can ensure that the time difference between two adjacent rows of display modules 1 in the splicing screen receiving data signals is at most one line scan period, thereby preventing picture tearing in the splicing screen and improving the display quality of the splicing screen.

[0083] In some embodiments, the display module 1 includes a placement direction identifier located on the back of the display module 1; in the front view direction of the back of the splicing screen, the placement direction identifiers corresponding to the display modules 1 with opposite placement directions are also opposite.

[0084] The placement direction identifier can be a text identifier, such as the English identifier "UP" shown in FIG. 8, or a Chinese identifier such as "up", or a text identifier in other countries, which is not limited here.

[0085] The placement direction identifier can also be a graphic identifier, such as the arrow identifier shown in FIG. 8.

[0086] The placement direction mark may also be a combination of a text mark and a graphic mark. For example, as shown in FIG8 , both a text mark and a graphic mark may be provided on the back of the display module 1 .

[0087] Since the placement direction of the placement direction mark set on the back of the display module 1 is consistent, when the display module 1 is placed upright, the placement direction mark on the front view direction of the back of the splicing screen is upright, and when the display module 1 is placed inverted, the placement direction mark on the front view direction of the back of the splicing screen is inverted. Therefore, the placement direction marks corresponding to the display modules 1 with opposite placement directions are also opposite.

[0088] In the embodiment provided in the present disclosure, by setting a placement direction mark on the back of the display module 1, the normal placement direction of the display module 1 can be determined by the placement direction mark, thereby determining the first row of pixels and the last row of pixels in the display module 1.

[0089] In some other embodiments, the display module 1 further includes a flat cable connector, and the flat cable connector has a pin number identification;

[0090] In the front viewing direction of the back of the spliced ​​screen, the placement directions of the pin number labels on the same cable connectors in the display modules 1 placed in opposite directions are also opposite.

[0091] The cable connector can be a cable socket provided on the display module 1. FIG9 is a schematic diagram of the structure of a cable socket provided in an embodiment of the present disclosure. The pin number identifier can be a identifier specifically provided on the circuit board corresponding to the cable socket, such as the circle and "1" shown in FIG9 , or can be a pin number identifier provided on the cable socket, such as the hollow arrow in FIG9 , or can be a reverse connection prevention identifier on the cable socket, etc., without limitation.

[0092] FIG9 shows the placement direction of the cable socket when the display module 1 is placed upright. When the display module 1 is inverted, the cable socket will also be inverted, and the placement direction of the corresponding pin number identification will also be inverted. FIG10 is a schematic diagram of the cable socket inverted corresponding to FIG9 provided in an embodiment of the present disclosure.

[0093] In the embodiment provided by the present disclosure, the placement direction of the display module 1 can be determined by the placement direction identified by the pin number corresponding to the cable connector, and then the first row of pixels and the last row of pixels in the display module 1 can be determined.

[0094] Please refer to FIG11 which is a schematic structural diagram of a display device provided in an embodiment of the present disclosure.

[0095] Adjacent pixel rows in two adjacent rows of display modules 1 in the display device 100 correspond to pixels in the same row of the display module 1 .

[0096] The pixels in the same row may be the first row of pixels or the last row of pixels of the display module 1 .

[0097] The display device 100 shown in Figure 11 includes 6 display modules 1, each display module 1 is in a separate row, the last row of pixels of the first row of display modules 1 is adjacent to the last row of pixels of the second row of display modules 1, the first row of pixels of the second row of display modules 1 is adjacent to the first row of pixels of the third row of display modules 1, and the last row of display modules 1 of the third row of display modules 1 is adjacent to the last row of display modules 1 of the fourth row of display modules 1. This ensures that the two adjacent rows of pixels of adjacent rows of display modules 1 in the display device 100 receive data signals at the same time.

[0098] Please refer to Figure 12 for a structural diagram of another splicing screen provided by an embodiment of the present invention. The number of rows of display modules 1 included in the display device 100 is an even number, and the arrangement order of the first row of display modules 1 in multiple display devices 100 is the same. The spliced ​​screen shown in Figure 12 includes two display devices 100 adjacent to each other in the upper and lower directions. The placement directions of the first row of display modules 1 in these two display devices 100 are both upright. Since the adjacent pixel rows of two adjacent rows of display modules 1 in each display device 100 correspond to the same row of pixels in the display module 1, the next row of display modules 1 adjacent to the first row of display modules 1 is not inverted. Since there are only two display modules 1, the upper and lower ones in Figure 12, the two adjacent rows of pixels of the two adjacent display devices 100 are the first row of pixels in the corresponding display modules 1, that is, the first row of pixels of the last row of display modules 1 in the upper display device 100 in Figure 12 are adjacent to the first row of pixels of the first row of display modules in the lower display device 100, thereby making the time difference between the adjacent pixel rows of the upper and lower adjacent display devices 100 receiving data signals one row scanning cycle.

[0099] FIG13 is a schematic diagram of the structure of another spliced ​​screen according to an embodiment of the present invention. The display devices 100 include an odd number of rows of display modules 1, and the display modules 1 in the first row of the multiple display devices 100 are arranged in opposite directions. As shown in FIG13 , the display modules 1 in the first row of the upper and lower adjacent display devices 100 are arranged in opposite directions. That is, the display modules 1 in the first row of the upper display device 100 are arranged upright, while the display modules 1 in the first row of the lower display device 100 are arranged inverted. At the same time, since the adjacent pixel rows of two adjacent rows of display modules 1 in each display device 100 correspond to the pixels in the same row of the display module 1, the arrangement order of the display modules 1 in the upper display device 100 is: upright → inverted → upright, and the arrangement order of the display modules in the lower display device 100 is: inverted → upright → inverted, which makes the adjacent pixel rows of the upper and lower adjacent display devices 100 correspond to the pixels in the same row of the display module 1, that is, the last row of pixels of the last row of display modules 1 in the upper display device 100 is adjacent to the first row of pixels of the first row of display modules 1 in the lower display device 100, thereby making the adjacent pixel rows of the upper and lower adjacent display devices 100 receive data signals at the same time.

[0100] Please refer to FIG14 for a structural schematic diagram of another splicing screen provided by an embodiment of the present disclosure. The display device 100 includes an odd-numbered row of display modules 1. The placement direction of the first row of display modules in multiple display devices is the same. In FIG14, the placement direction of the first row of display modules in each display device 100 is upright, so that the last row of pixels of the last row of display modules 1 of the upper display device 100 in FIG14 is adjacent to the first row of pixels of the first row of display modules 1 of the lower display device 100. In order to control the time for two adjacent rows of pixels in the adjacent display devices 100 in the column direction Y to receive data signals within one row scanning cycle, please refer to FIG15 for a structural schematic diagram of another splicing screen provided by an embodiment of the present disclosure. The splicing screen also includes:

[0101] A plurality of control signal lines (not shown) and the controller 200, wherein the control signal lines are connected between the controller 200 and a row of display devices 100;

[0102] The controller 200 is used to provide a row scan start signal to the corresponding row display device 100 through the control signal line, and receive an end signal when each row display device 100 completes the last row of pixel scanning. The controller 200 is also used to generate a row scan start signal for the next row display device 100 based on the end signal.

[0103] In some embodiments, when the end signal is the end signal of the last row of display devices 100 , the controller 200 generates a row scan start signal for the next frame and uses it as the row scan start signal for the first row of display devices 100 .

[0104] As shown in FIG15 , when the controller 200 displays the first frame, it uses the start signal of the first frame as the start signal of the first row of display devices 100. The first row of display devices 100 sends this start signal to each display module 1 included in the first row of display devices 100 for row scanning. When the last row of pixels of the display module 1 in the first row of display devices 100 is scanned, an end signal is generated and sent to the controller 200.

[0105] The controller 200 generates a start signal for row scanning of the second row of display devices 100 based on the received end signal of the first row of display devices 100, and sends the signal to the second row of display devices 100. The second display device 100 sends the start signal to each display module 1 included in the second row of display devices 100 for row scanning. When the last row of pixels of the display module 1 in the second row of display devices 100 is scanned, an end signal is generated and sent to the controller 200.

[0106] Based on the received end signal from the second row of display devices 100, the controller 200 generates a start signal for row scanning of the third row of display devices 100 and sends it to the third row of display devices 100. The third display device 100 then sends this start signal to each display module 1 included in the third row of display devices 100 for row scanning. When the last row of pixels in the display module 1 of the third row of display devices 100 is scanned, an end signal is generated and sent to the controller 200. This process continues in this manner until the controller 200 receives the end signal from the last row of display devices 100, completing the display of the first frame. Thereafter, the controller 200 generates a start signal for displaying the next frame and sends it to the first row of display devices 100, repeating the above process.

[0107] Since the controller 200 provides a row scan start signal for each row of display devices 100, and generates a start signal for the current row of display devices 100 based on the received end signal of the previous row of display devices 100 after the previous row of display devices 100 finishes scanning, the time when adjacent pixel rows of two adjacent rows of display devices 100 receive data signals differs by one row scan cycle.

[0108] Based on the same inventive concept, an embodiment of the present disclosure provides a control method for a splicing screen. The specific structure of the splicing screen can be referred to the splicing screen described above, and will not be repeated here. Please refer to FIG16 for a control method for a splicing screen provided by an embodiment of the present disclosure. The control method includes:

[0109] Step S11: dividing the image to be displayed into a plurality of sub-images corresponding one-to-one to a plurality of display modules;

[0110] Step S12: rotating one row of sub-images in two adjacent rows of sub-images in the image to be displayed by 180° to obtain a rotated sub-image; wherein the display module corresponding to the rotated sub-image is placed upside down;

[0111] Step S13: transmitting the rotated sub-image to the corresponding inverted display module, and transmitting the unrotated sub-image to the corresponding upright display module; wherein the writing direction of the data signal of the inverted display module is opposite to that of the upright display module, and the scanning signal is written synchronously.

[0112] If the placement directions of the display modules in two adjacent rows in the spliced ​​screen are different, please refer to Figure 17 for a structural schematic diagram of a spliced ​​screen provided in an embodiment of the present disclosure. The spliced ​​screen displays the image to be displayed as shown in Figure 18. If the control method of the spliced ​​screen in Figure 17 is not improved, the image displayed on the spliced ​​screen will be as shown in Figure 19. Since the upper display module in Figure 17 is placed inverted, the sub-image displayed by the upper display module in Figure 19 is also inverted, and the data writing direction is to write data signals from the first column of pixels to the last column of pixels.

[0113] After the present disclosure makes improvements to the spliced ​​screen as shown in Figure 13, in order to ensure that the image finally presented by the spliced ​​screen is consistent with the image to be displayed, the sub-image corresponding to the placed display module will be rotated 180°, and the writing direction of the data signal in the rotated sub-image will be changed to be opposite to the writing direction of the data signal of the upright display module (that is, the data direction of the inverted display module is to write the data signal from the last column of pixels to the first column of pixels). In this way, when looking directly at the spliced ​​screen, the data writing direction of the inverted display module and the upright display module are visually the same, so that the image actually displayed on the spliced ​​screen is consistent with the original image. Figure 20 is a schematic diagram of an actual display image of a spliced ​​screen provided by an embodiment of the present disclosure.

[0114] In some embodiments, when adjacent display modules are placed in different directions in the column direction, the control method further includes:

[0115] A row scanning signal is provided to each display module at the same time, so that each display module scans row by row from the first row of pixels to the last row of pixels.

[0116] For example, the two display modules in Figure 17 receive the row scanning signal at the same time, and scan row by row from the first row of pixels to the last row of pixels at the same time. Therefore, the two display modules in Figure 17 start writing sub-images at the same time and complete the writing of the corresponding sub-images at the same time. The time it takes to complete the writing of these two sub-images is the scanning time of one frame of image. This makes it easy to control the scanning time of one frame of image on the splicing screen within a time that cannot be perceived by the human eye. Even if the splicing screen is very large (that is, the number of rows containing display modules is very large), the complete presentation of the picture can be visually seen.

[0117] If all display modules in the spliced ​​screen are placed in the same direction (i.e., they are all upright), the row scan signal can be sent to the first row of pixels in the next row of display modules after the last row of pixels in the current row of display modules completes the row scan. In this way, the time difference between the two adjacent rows of pixels in the upper and lower adjacent rows of display modules receiving the data signal is one row scan cycle, so that the spliced ​​screen can display the image normally.

[0118] In the embodiment provided by the present disclosure, by dividing the image to be displayed into multiple sub-images corresponding one-to-one to multiple display modules, and rotating the sub-image corresponding to the inverted display module by 180°, when writing the data signal, the writing direction of the data signal of the inverted display module and the upright display module is set to be opposite, and the scanning signal is written synchronously, so that the spliced ​​screen can display the image normally.

[0119] In other embodiments, the spliced ​​screen includes multiple rows of display devices, multiple display modules are distributed in the multiple rows of display devices, each display device includes at least two rows of display modules, one row of display modules in the two rows of display modules is placed upright, and the other row of display modules is placed inverted, the display device includes odd rows of display modules, and the first row of display modules in the multiple display devices are placed in the same direction;

[0120] The control method also includes:

[0121] Providing a row scanning start signal to the display device row by row; wherein the start signal is used to simultaneously provide each display module in the display device, and each display module simultaneously scans from the first row of pixels to the last row of pixels row by row according to the start signal;

[0122] Receiving a signal indicating that a row of display devices has completed scanning of the last row of pixels;

[0123] A new start signal is generated according to the end signal and provided to the next row of display devices corresponding to one row of display devices until the last row of display devices completes the last row scan.

[0124] In other embodiments, receiving a completion signal indicating that the last row of display devices has completed scanning the last row;

[0125] Generate a row scan start signal for the next frame of image according to the end signal of the last row of display device completing the last row of scan;

[0126] The row scan start signal of the next frame is used as the row scan start signal of the first row display device and is provided to the first row display device.

[0127] For example, the structure of the spliced ​​screen is as shown in FIG15 . After the controller 200 divides the image to be displayed into sub-images corresponding to a plurality of display modules and provides them to the corresponding display modules, it sends a row scanning start signal to the first row of display devices 100, so that the display modules in the first row of display devices 100 simultaneously receive the above start signal and start row scanning. When the display modules in the first row of display devices 100 complete scanning of the last row of pixels, an end signal is generated.

[0128] After receiving the end signal from the first row of display devices 100, the controller 200 generates a start signal for row scanning of the second row of display devices 100 and sends it to the second row of display devices 100. The display modules in the second row of display devices 100 simultaneously receive the start signal and begin row scanning. When the display modules in the second row of display devices 100 complete scanning of the last row of pixels, an end signal is generated.

[0129] After receiving the end signal from the second row of display devices 100, the controller 200 generates a start signal for the row scan of the third display device 100 and sends it to the third row of display devices 100, so that the display modules in the third row of display devices 100 simultaneously receive the above start signal and start row scanning. When the display modules in the third row of display devices 100 complete scanning of the last row of pixels, an end signal is generated. Similarly, when the controller 200 receives the end signal from the last row of display devices 100, it generates a row scan start signal for the next frame of the picture and sends it to the first row of display devices 100 as the start signal for the row scan of the first row of display devices 100, and repeats the above process.

[0130] It should be understood that when the spliced ​​screen includes multiple rows of display devices 100, the total scanning time of the sub-images of the display devices 100 in one row of the spliced ​​screen is less than the scanning time of a frame image, specifically the ratio of the scanning time of a frame image to the total number of rows of the display device 100.

[0131] The controller 200 can also divide the image to be displayed into sub-images corresponding to multiple rows of display devices 100 and send them to the display devices 100 in the corresponding rows. The display devices 100 divide the images into sub-images corresponding to the number of display modules included in the display device 100 and distribute them to the display modules. This can reduce the data processing volume of the controller 200 and improve the data processing efficiency of the controller 200.

[0132] The display module in the embodiment of the present disclosure can be a liquid crystal display module, an LED display module, a mini LED display module, an electroluminescent display module, an LTPS Mini / Micro LED display module, a low-temperature polycrystalline oxide (LTPO) Mini / Micro LED display module, etc., without specific limitation.

[0133] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0134] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A splicing screen, wherein: include: A plurality of display modules arranged in an array; In the column direction of the array, the time difference between two adjacent rows of pixels of two adjacent display modules receiving data signals is at most one row scanning period.

2. The splicing screen according to claim 1, wherein: The spliced screen includes multiple rows of display devices, the multiple display modules are distributed in the multiple rows of display devices, and each display device includes at least two rows of display modules; Two adjacent rows of display modules in the display device are placed in opposite directions; In the column direction, the time difference between two adjacent rows of pixels of two adjacent display devices receiving data signals is at most one row scanning period.

3. The splicing screen according to claim 2, wherein: Adjacent pixel rows in two adjacent rows of display modules in the display device correspond to pixels in the same row of the display modules.

4. The splicing screen according to claim 3, wherein: The display device includes an even-numbered row of display modules; and the display modules in the first row of the plurality of display devices are placed in the same direction.

5. The splicing screen according to claim 3, wherein: The display device includes odd rows of display modules; the display modules in the first row of the multiple display devices are placed in opposite directions.

6. The splicing screen according to claim 1, wherein: The two adjacent rows of pixels of the two adjacent display modules are pixels in the same row in the corresponding display modules.

7. The splicing screen according to claim 3 or 6, wherein: The pixels in the same row are the first row of pixels or the last row of pixels of the display module.

8. The splicing screen according to any one of claims 1 to 7, wherein: The display module includes a placement direction mark located on the back of the display module; In the front-view direction of the back side of the spliced screen, the placement direction marks corresponding to the display modules placed in opposite directions are also opposite.

9. The splicing screen according to any one of claims 1 to 7, wherein: The display module further includes a cable connector having a pin number identifier; In the front viewing direction of the back side of the spliced screen, the placement directions of the pin number identifiers on the same cable connectors in the display modules placed in opposite directions are also opposite.

10. The splicing screen according to claim 3, wherein: The display device comprises odd-numbered rows of display modules; the display modules in the first row of the plurality of display devices are placed in the same direction; The splicing screen also includes: A plurality of control signal lines and a controller, wherein the control signal lines are connected between the controller and a row of display devices; The controller is used to provide a start signal for row scanning to the corresponding row display device through the control signal line, and receive an end signal when each row display device completes the last row of pixel scanning. The controller is also used to generate a start signal for row scanning of the next row display device based on the end signal.

11. The splicing screen according to claim 10, wherein: When the end signal is the end signal of the last row of display devices, the controller generates a row scan start signal of the next frame and uses it as the row scan start signal of the first row of display devices.

12. A control method for a spliced screen, wherein the spliced screen comprises a plurality of display modules arranged in an array, wherein: include: Splitting the image to be displayed into a plurality of sub-images corresponding one-to-one to the plurality of display modules; Rotating one row of sub-images in two adjacent rows of sub-images in the image to be displayed by 180° to obtain a rotated sub-image; wherein the display module corresponding to the rotated sub-image is placed upside down; The rotated sub-image is transmitted to the corresponding inverted display module, and the unrotated sub-image is transmitted to the corresponding upright display module; wherein the writing direction of the data signal of the inverted display module is opposite to that of the upright display module, and the scanning signal is written synchronously.

13. The control method according to claim 12, wherein: The control method further includes: A row scanning signal is provided to each display module simultaneously, so that each display module scans row by row from the first row of pixels to the last row of pixels.

14. The control method according to claim 12, wherein: The multiple display modules are distributed in multiple rows of display devices, each display device includes at least two rows of display modules, one row of display modules in the two rows of display modules is placed upright, and the other row of display modules is placed inverted, the display device includes odd rows of display modules, and the first row of display modules in the multiple display devices are placed in the same direction; The control method further includes: Providing a row scanning start signal to the display device row by row; wherein the start signal is used to simultaneously provide each display module in the display device, and each display module simultaneously scans from the first row of pixels to the last row of pixels row by row according to the start signal; Receiving a signal indicating that a row of display devices has completed scanning of the last row of pixels; A new start signal is generated according to the end signal and provided to the next row of display devices corresponding to the row of display devices until the last row of display devices completes the last row scan.

15. The control method according to claim 14, wherein: Also includes: receiving a signal indicating that the last row of display devices has completed scanning the last row; Generate a row scan start signal for the next frame of picture according to an end signal of the last row of display devices completing the last row of scanning; The row scan start signal of the next frame is used as the row scan start signal of the first row display device and provided to the first row display device.

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