Seam repairing method and device for spliced display panel, display panel and electronic equipment

Abstract

The invention discloses a seam repairing method and device for a spliced display panel, the display panel and electronic equipment. According to the embodiment of the invention, the seam repairing method for the tiled display panel comprises the following steps: displaying a test picture on the tiled display panel; judging whether a splicing gap exists or not according to the displayed test picture; when it is judged that the splicing gap exists, a gap repairing coefficient at the splicing gap is obtained, and when the splicing display panel displays a playing picture, the pixel gray scale at the splicing gap is adjusted according to the gap repairing coefficient so as to achieve gap repairing. According to the seam repairing method and device for the spliced display panel, the display panel and the electronic equipment, seam repairing of the spliced display panel can be conveniently and accurately achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of display panels, and in particular to a seam repairing method and device for splicing display panels, a display panel and an electronic device. Background Art

[0002] A spliced ​​display panel is a large-screen display system composed of multiple independent display units. These display units can be LCD (Liquid Crystal Display), PDP (Plasma Display Panel), LED (Light Emitting Diode Display), etc. Spliced ​​display technology allows these units to be arranged in any number and configuration to form a unified, continuous large screen. This technology is widely used in monitoring rooms, conference rooms, command centers, billboards and other occasions that require large-size displays.

[0003] In the prior art, for a display screen composed of multiple display units, in order to improve the display uniformity, the display screen is usually calibrated. However, the existing calibration method often requires relatively complicated steps and equipment, and is performed by using a fixed seam correction coefficient through a control card, and cannot be corrected again.

[0004] Therefore, it is hoped that there will be a new method and device for repairing the seams of spliced ​​display panels, a display panel, and an electronic device that can overcome the above problems. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a method and device for repairing the seams of spliced ​​display panels, a display panel and an electronic device, and in particular, a method for implementing seam repair in an LED display system, so as to conveniently and accurately implement seam repair of spliced ​​display panels.

[0006] According to one aspect of the present invention, a method for repairing a seam of a spliced ​​display panel is provided, comprising:

[0007] Displaying a test picture on the spliced ​​display panel;

[0008] Determining whether there is a splicing gap according to the displayed test picture;

[0009] When it is determined that the splicing gap exists, a seam repair coefficient at the splicing gap is obtained,

[0010] When the spliced ​​display panel displays a playback image, the pixel grayscale at the splicing gap is adjusted according to the seam trimming coefficient to achieve seam trimming.

[0011] Optionally, the seam repairing method further comprises:

[0012] Acquire an existing correction coefficient of the spliced ​​display panel at the splicing gap;

[0013] The seam repair coefficient is used as a new correction coefficient to replace the existing correction coefficient.

[0014] Optionally, judging whether there is a splicing gap according to the displayed test picture includes:

[0015] Acquiring the captured image information of the test screen;

[0016] According to the image information, respectively obtaining brightness values ​​of the spliced ​​portions and the non-spliced ​​portions of the spliced ​​display panel;

[0017] The difference between the brightness value of the spliced ​​portion and the brightness value of the non-spliced ​​portion is compared with a set threshold value, and when the difference is greater than the set threshold value, it is determined that the splicing gap exists at the splicing portion.

[0018] Optionally, when it is determined that the splicing gap exists, obtaining a seam repair coefficient at the splicing gap includes:

[0019] Determine an adjusted grayscale value according to the grayscale value of the splicing portion corresponding to the splicing gap and the grayscale value of the non-splicing portion, wherein a difference between a brightness value of the splicing portion at the adjusted grayscale value and a brightness value of the non-splicing portion is less than the set threshold;

[0020] The seam repair coefficient is obtained according to the grayscale value of the joint corresponding to the joint gap and the adjusted grayscale value.

[0021] Optionally, when the spliced ​​display panel displays a playback picture, adjusting the pixel grayscale at the splicing gap according to the seam repair coefficient includes:

[0022] According to the seam repair coefficient, the pixel grayscale of at least one row / column of display units corresponding to the splicing gap is adjusted,

[0023] The number of rows / columns of the display unit adjusted according to the seam repair coefficient is related to the difference between the brightness value of the splicing portion and the brightness value of the non-splicing portion.

[0024] Optionally, the seam repairing method further comprises:

[0025] splicing at least two display sub-panels to obtain the spliced ​​display panel; and

[0026] Displaying a pure color picture on the spliced ​​display panel,

[0027] Wherein, judging whether there is a splicing gap according to the displayed test picture includes:

[0028] Obtain the brightness values ​​of the adjacent display sub-panels at the joint and non-joint locations respectively;

[0029] When the difference between the brightness value at the joint of the adjacent display sub-panels and the brightness value at the non-joined portion of the adjacent display sub-panels is greater than a set threshold, it is determined that the joint gap exists at the joint of the adjacent display sub-panels;

[0030] The step of obtaining the seam repair coefficient at the splicing gap includes:

[0031] Determine an adjusted grayscale value according to the grayscale value of the splicing portion corresponding to the splicing gap and the grayscale value of the non-splicing portion, wherein a difference between a brightness value of the splicing portion at the adjusted grayscale value and a brightness value of the non-splicing portion is less than the set threshold;

[0032] The seam repair coefficient is determined according to the ratio of the grayscale value of the joint corresponding to the joint gap to the adjusted grayscale value.

[0033] Optionally, the pure color picture includes at least one selected from a red picture, a green picture and a blue picture.

[0034] According to another aspect of the present invention, there is provided a seam repairing device for splicing display panels, comprising:

[0035] An acquisition unit, used for acquiring a test picture displayed on the spliced ​​display panel;

[0036] A judging unit, used for judging whether there is a splicing gap according to the displayed test picture;

[0037] a calculation unit, configured to calculate and obtain a seam repair coefficient at the splicing gap when it is determined that the splicing gap exists; and

[0038] The adjusting unit is used to adjust the pixel grayscale at the splicing gap according to the seam repair coefficient when the splicing display panel displays the playback picture.

[0039] Optionally, the seam repairing device further comprises:

[0040] A control card is connected to the operation unit to obtain the seam repair coefficient, and uses the seam repair coefficient as a new correction coefficient to replace the stored existing correction coefficient.

[0041] Optionally, the acquisition unit captures image information of the test screen;

[0042] The judgment unit obtains the brightness values ​​of the spliced ​​portion and the non-spliced ​​portion of the spliced ​​display panel according to the image information, and compares the difference between the brightness value of the spliced ​​portion and the brightness value of the non-spliced ​​portion with a set threshold; when the difference is greater than the set threshold, the judgment unit judges that the splicing gap exists at the splicing portion;

[0043] The operation unit determines the adjusted grayscale value according to the grayscale value of the splicing portion corresponding to the splicing gap and the grayscale value of the non-splicing portion, and obtains the seam repair coefficient according to the grayscale value of the splicing portion corresponding to the splicing gap and the adjusted grayscale value, wherein the difference between the brightness value of the splicing portion at the adjusted grayscale value and the brightness value of the non-splicing portion is less than the set threshold.

[0044] According to another aspect of the present invention, there is provided a display panel, comprising:

[0045] The seam repairing device for spliced ​​display panels as described above.

[0046] According to another aspect of the present invention, there is provided an electronic device, comprising:

[0047] A spliced ​​display panel formed by splicing a plurality of display sub-panels; and

[0048] The seam repairing device for spliced ​​display panels as described above.

[0049] The seam repair method and device for a spliced ​​display panel, a display panel, and an electronic device provided by the present invention determine whether a splicing gap exists based on a test picture displayed on the spliced ​​display panel, and then obtain a corresponding seam repair coefficient. When the spliced ​​display panel displays a playback picture, the grayscale is adjusted according to the seam repair coefficient to achieve seam repair, and the seam repair is convenient and efficient.

[0050] Furthermore, the seam repair coefficient is used to replace the existing correction coefficient, so that seam repair can be implemented by using the correction coefficient in a control card without the seam repair function, which has a wide range of applications.

[0051] Furthermore, it is determined whether there is a stitching gap according to the brightness value of the image information obtained by shooting, and after the stitching gap is confirmed, the stitching gap coefficient is obtained by adjusting the grayscale value, and the stitching gap effect is good.

[0052] Furthermore, the pixel grayscale of the display unit corresponding to the splicing gap is adjusted according to the seam repair coefficient, and the number of rows / columns of the adjusted display unit is related to the difference in brightness value, so the adjustment effect is smoother and better.

[0053] Furthermore, the test picture displayed by the spliced ​​display panel is a pure color picture, and the three primary colors of red, green and blue of the spliced ​​display panel can be trimmed with good trimming effect.

[0054] The embodiments of the present invention provide a method and device for repairing the seams of a spliced ​​display panel, a display panel, and an electronic device. By controlling a video source to print a test screen on the spliced ​​display panel and adjusting the grayscale of pixels at corresponding bright (dark) line positions in an image (of a captured test screen), the coefficients required for repair can be simulated. Finally, the coefficients obtained through simulation are superimposed on the correction coefficients to complete the seam repair. The operation is simple, the seam repair effect is good, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0056] Figure 1 A method flow chart of a method for repairing seams of spliced ​​display panels according to an embodiment of the present invention is shown;

[0057] Figure 2 A schematic structural diagram of a seam repairing device for splicing display panels according to an embodiment of the present invention is shown;

[0058] Figure 3 A schematic diagram showing an application scenario of a method and device for repairing seams of spliced ​​display panels according to an embodiment of the present invention is shown;

[0059] Figure 4 A display scene of a spliced ​​display panel according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0060] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, identical elements are represented by identical or similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0061] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. Many specific details of the present invention, such as the structure, materials, dimensions, processing technology and techniques of the components are described below to provide a clearer understanding of the present invention. However, as those skilled in the art will appreciate, the present invention may be implemented without following these specific details.

[0062] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0063] A spliced ​​display panel is a large-screen display system composed of multiple independent display units. Taking the LED display screen as an example, the LED display screen is composed of boxes that serve as LED display units. In order to improve the uniformity of the display, the LED display screen is usually calibrated.

[0064] The inventors found that since the large display screen is often reassembled, and the gaps between the boxes cannot be guaranteed to be consistent every time, there will eventually be obvious bright or dark lines at the joints of the boxes after reassembly, affecting the display effect of the large screen. Currently, there is no simple and reliable method to solve this problem.

[0065] Figure 1 FIG. 2 is a flow chart showing a method for repairing seams of spliced ​​display panels according to an embodiment of the present invention. Figure 1 As shown, the seam repairing method of the spliced ​​display panel according to the embodiment of the present invention comprises the following steps:

[0066] In step S101, a test picture is displayed on the spliced ​​display panel;

[0067] A test picture is displayed on a spliced ​​display panel formed by splicing a plurality of display sub-panels.

[0068] In step S102, judging whether there is a splicing gap according to the displayed test picture;

[0069] It is determined whether there is a splicing gap according to the displayed test screen, that is, whether the gap at the connection of adjacent display sub-panels is too large or too small. When it is determined that there is a splicing gap, step S103 is executed; when it is determined that there is no splicing gap, the playback screen can be directly displayed on the spliced ​​display panel.

[0070] In step S103, the seam repair coefficient at the splicing gap is obtained;

[0071] When it is determined that there is a splicing gap, a seam repair coefficient at the splicing gap is obtained (for example, obtained through calculation).

[0072] In step S104, when the spliced ​​display panel displays the playback picture, the grayscale of the pixels at the splicing gap is adjusted according to the seam trimming coefficient to achieve seam trimming.

[0073] After executing steps S101 to S103, a seam trimming coefficient for seam trimming is obtained. When the spliced ​​display panel displays a playback image (ie, content to be played to a user), the pixel grayscale at the splicing seam is adjusted according to the seam trimming coefficient to achieve seam trimming.

[0074] Specifically, when there is a splicing gap with a gap that is too small between adjacent display sub-panels, the corresponding seam repair coefficient will reduce the grayscale of the pixels at the splicing gap when the splicing display panel displays the playback picture, so that the brightness at the splicing gap corresponds to the brightness of the display part of the display sub-panel. When there is a splicing gap with a gap that is too large between adjacent display sub-panels, the corresponding seam repair coefficient will increase the grayscale of the pixels at the splicing gap when the splicing display panel displays the playback picture, so that the brightness at the splicing gap corresponds to the brightness of the display part of the display sub-panel.

[0075] In an optional embodiment of the present invention, the seam repair method further includes the following steps: obtaining an existing correction coefficient of the spliced ​​display panel at the splicing seam; and using the seam repair coefficient as a new correction coefficient to replace the existing correction coefficient. Specifically, for the display sub-panel, there is usually a pre-set correction coefficient (existing correction coefficient), which is used, for example, to overcome point defects, line defects, uneven brightness, and Mura defects caused during the manufacturing process of the display sub-panel. For the technical solution of the present application, after obtaining the seam repair coefficient at the splicing seam, the seam repair coefficient is used to replace the original correction coefficient at the splicing seam.

[0076] In a specific embodiment of the present invention, judging whether there is a splicing gap according to the displayed test picture includes the following steps: obtaining the image information of the test picture taken; according to the image information, respectively obtaining the brightness values ​​of the splicing and non-splicing parts of the splicing display panel; comparing the difference between the brightness value of the splicing and the brightness value of the non-splicing with a set threshold value, and when the difference is greater than the set threshold value, judging that the splicing gap exists at the splicing. Specifically, a test picture is displayed on the splicing display panel, and the image information of the test picture taken is obtained, and then the brightness values ​​of the splicing and non-splicing parts of the splicing display panel are respectively obtained according to the obtained image information. Comparing the difference between the brightness value of the splicing and the brightness value of the non-splicing with the set threshold value, when the brightness value of the splicing is greater than the brightness value of the non-splicing and the difference is greater than the set threshold value, judging that the splicing has a splicing gap with a gap that is too small; when the brightness value of the splicing is less than the brightness value of the non-splicing and the difference is greater than the set threshold value, judging that the splicing has a splicing gap with a gap that is too large. Optionally, the test screen is photographed by a photographing device, so as to obtain image information of the photographed test screen. The photographing device is, for example, a camera, a video camera, a colorimeter, etc.

[0077] Optionally, obtaining the seam repair coefficient at the splicing gap includes: determining the adjustment grayscale value according to the grayscale value of the splicing gap corresponding to the splicing gap and the grayscale value of the non-splicing gap; and obtaining the seam repair coefficient according to the grayscale value of the splicing gap corresponding to the splicing gap and the adjustment grayscale value, wherein the difference between the brightness value of the splicing gap under the adjustment grayscale value and the brightness value of the non-splicing gap is less than a set threshold. Specifically, the technical solution of the present application is to adjust the brightness value at the splicing gap by adjusting the grayscale value at the splicing gap. When there is a splicing gap with a gap that is too small at the splicing gap (at this time, the brightness value of the splicing gap will be greater than the brightness value of the non-splicing gap), the pixel grayscale value at the splicing gap is lowered, thereby reducing the corresponding brightness value, so that the brightness of the entire splicing display panel is uniform; when there is a splicing gap with a gap that is too large at the splicing gap (at this time, the brightness value of the splicing gap will be less than the brightness value of the non-splicing gap), the pixel grayscale value at the splicing gap is increased, thereby increasing the corresponding brightness value, so that the brightness of the entire splicing display panel is uniform.

[0078] Optionally, when the spliced ​​display panel displays the playback picture, adjusting the pixel grayscale at the splicing gap according to the seam repair coefficient includes: adjusting the pixel grayscale of at least one row / column of display units corresponding to the splicing gap according to the seam repair coefficient, wherein the number of rows / columns of the display units adjusted according to the seam repair coefficient is related to the difference between the brightness value at the splicing and the brightness value at the non-splicing. Specifically, in the case of a splicing gap, when the splicing display panel displays the playback picture, the pixel grayscale at the splicing gap will be adjusted according to the seam repair coefficient. When the splicing gap is vertical, the pixel grayscale of at least one column of display units at the splicing gap is adjusted. When the difference between the brightness value at the splicing and the brightness value at the non-splicing is large, the pixel grayscale of several columns of display units can be adjusted at the splicing gap; when the splicing gap is horizontal, the pixel grayscale of at least one row of display units at the splicing gap is adjusted. When the difference between the brightness value at the splicing and the brightness value at the non-splicing is large, the pixel grayscale of several rows of display units can be adjusted at the splicing gap.

[0079] In a specific embodiment of the present invention, the seam repair method includes: splicing at least two display sub-panels to obtain the spliced ​​display panel; and displaying a pure color picture on the spliced ​​display panel. Displaying a pure color picture, for example, refers to displaying a single color picture on the screen without interference from other colors or patterns. The pure color picture can help detect the color uniformity of the display panel, ensure that the color of the entire screen is consistent, and there is no local over-brightness or over-darkness; through the pure color picture, the contrast and brightness level of the display panel can be evaluated to see the performance of the screen under different brightness settings. Under the pure color picture, any defects (bright lines or dark lines) will be very obvious because they will not change with the change of color. Optionally, the pure color picture includes at least one selected from a red picture, a green picture and a blue picture. That is, the red, green and blue primary colors of the spliced ​​display panel can be seamed separately.

[0080] Judging whether there is a splicing gap based on the displayed test screen includes: respectively obtaining the brightness values ​​of the splicing and non-splicing parts of adjacent display sub-panels; when the difference between the brightness value of the splicing part of the adjacent display sub-panels and the brightness value of the non-splicing part of the adjacent display sub-panels is greater than a set threshold, determining that the splicing gap exists at the splicing part of the adjacent display sub-panels.

[0081] Obtaining the seam repair coefficient at the splicing gap includes: determining the adjusted grayscale value according to the grayscale value of the splicing gap corresponding to the splicing gap and the grayscale value of the non-splicing gap; determining the seam repair coefficient according to the ratio of the grayscale value of the splicing gap corresponding to the splicing gap and the adjusted grayscale value, wherein the difference between the brightness value of the splicing gap at the adjusted grayscale value and the brightness value of the non-splicing gap is less than the set threshold.

[0082] Figure 2 FIG. 2 shows a schematic diagram of the structure of a seam repairing device for splicing display panels according to an embodiment of the present invention. The seam repairing device according to an embodiment of the present invention is used, for example, to implement the seam repairing method described above. Figure 2 As shown, the seam repairing device for spliced ​​display panels according to an embodiment of the present invention includes an acquisition unit 100 , a judgment unit 200 , a calculation unit 300 and an adjustment unit 500 .

[0083] Specifically, the acquisition unit 100 is used to acquire a test picture displayed on the spliced ​​display panel.

[0084] The judging unit 200 is used to judge whether there is a splicing gap according to the displayed test picture.

[0085] The calculation unit 300 is used to calculate and obtain the seam repair coefficient at the splicing gap when it is determined that there is a splicing gap.

[0086] The adjustment unit 500 is used to adjust the pixel grayscale at the splicing gap according to the seam trimming coefficient when the splicing display panel displays the playback picture.

[0087] Optionally, the judgment unit 200 obtains the brightness values ​​of the spliced ​​parts and the non-spliced ​​parts of the spliced ​​display panel according to the image information, and compares the difference between the brightness value of the spliced ​​parts and the brightness value of the non-spliced ​​parts with a set threshold; when the difference is greater than the set threshold, the judgment unit 200 determines that there is a splicing gap at the spliced ​​parts.

[0088] The operation unit 300 determines the adjusted grayscale value according to the grayscale value of the splicing point corresponding to the splicing gap and the grayscale value of the non-splicing point, and obtains the seam repair coefficient according to the grayscale value of the splicing point corresponding to the splicing gap and the adjusted grayscale value, wherein the difference between the brightness value of the splicing point at the adjusted grayscale value and the brightness value of the non-splicing point is less than the set threshold.

[0089] In an optional embodiment of the present invention, the seam repairing device further includes a control card 400. The control card 400 is connected to the operation unit 300 to obtain the seam repairing coefficient, and uses the seam repairing coefficient as a new correction coefficient to replace the stored existing correction coefficient.

[0090] In an optional embodiment of the present invention, the acquisition unit 100 includes at least one selected from a camera, a video camera, a colorimeter, etc. Of course, the function of the acquisition unit 100 can also be realized manually. Optionally, the acquisition unit 100, the judgment unit 200, the operation unit 300 and the adjustment unit 500 are all independent of the spliced ​​display panel, and can be connected to the spliced ​​display panel to realize their functions. Optionally, at least one of the judgment unit 200, the operation unit 300 and the adjustment unit 500 is integrated in the spliced ​​display panel.

[0091] Figure 3 A schematic diagram of an application scenario of a method and device for repairing seams of spliced ​​display panels according to an embodiment of the present invention is shown. Figure 4 A display scene of a spliced ​​display panel according to an embodiment of the present invention is shown.

[0092] like Figure 3 As shown in the figure, the spliced ​​display panel is composed of 8 cabinets (display sub-panels) (marked 1-8 in sequence). After the cabinets are spliced, a pure color picture (test picture) is displayed through the video source control. At this time, the splicing gaps (i.e. places with special brightness, such as Figure 4As shown by the white line in the middle). This means that during the splicing installation, the gap between cabinet 2 and cabinet 3 is too large or too small. The pure color grayscale displayed by any pixel can be adjusted. If the gap is bright, the grayscale of the pixel at the corresponding gap can be reduced; if the gap is dark, the grayscale of the pixel at the corresponding gap can be increased. Finally, by adjusting the overall grayscale of the display screen and the grayscale of the pixel corresponding to the gap, a uniform state can be adjusted. Through this method, according to the brightness value corresponding to the grayscale, it is possible to find which pixels need to adjust their brightness in the current situation, as well as the proportional coefficient of the adjustment. Optionally, the existing correction coefficient of the cabinet is further read back, and the correction coefficient is adjusted according to the proportional value found above, and then the adjusted correction coefficient is rewritten into the control card, so that the repair of the splicing gap is completed. When a pure color picture (test picture) is displayed on the spliced ​​display panel, a uniform picture (brightness) can be seen, and there will be no bright lines or dark lines.

[0093] According to another aspect of the present invention, a display panel is provided. The display panel includes the above-mentioned seam repairing device for splicing display panels. The display panel may be a liquid crystal display panel, an organic light emitting diode (OLED) panel, an electronic ink panel, etc.

[0094] According to another aspect of the present invention, an electronic device is provided. The electronic device includes a spliced ​​display panel in which a plurality of display sub-panels are spliced; and a seam repairing device for the spliced ​​display panel as described above. The spliced ​​display panel is, for example, a large-screen display system composed of a plurality of independent display sub-panels (display units), and the seam repairing device for the spliced ​​display panel is used for seam repairing of the large-screen display system (splicing display panel). The spliced ​​display panel may be a large screen for outdoor advertising, a large screen for concert display, and the like. Optionally, the electronic device is at least one selected from a sub-millimeter diode light-emitting display device, a micron diode light-emitting display device, and a quantum dot diode light-emitting display device, and the like. The electronic device is, for example, a complete display system including a spliced ​​display panel, a housing, a bracket, a circuit board, and the like. In addition to the spliced ​​display panel, the electronic device may also include a power adapter, an interface port, a control button, and the like.

[0095] According to the seam repair method and device for spliced ​​display panels, display panel and electronic device of the embodiments of the present invention, a grayscale image is printed through a video source, and the grayscale of the pixels corresponding to the gap is adjusted to simulate the seam repair; in this way, the adjustment coefficient required to complete the seam repair can be found (no independent seam repair coefficient is required), and the seam repair function can be realized by modifying the correction coefficient.

[0096] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0097] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for repairing a seam of a spliced ​​display panel, comprising: Displaying a test picture on the spliced ​​display panel; Determining whether there is a splicing gap according to the displayed test picture; When it is determined that the splicing gap exists, a seam repair coefficient at the splicing gap is obtained, When the spliced ​​display panel displays a playback image, the pixel grayscale at the splicing gap is adjusted according to the seam trimming coefficient to achieve seam trimming.

2. The method for repairing a seam of a spliced ​​display panel according to claim 1, wherein: The seam repairing method further comprises: Acquire an existing correction coefficient of the spliced ​​display panel at the splicing gap; The seam repair coefficient is used as a new correction coefficient to replace the existing correction coefficient.

3. The method for repairing a seam of a spliced ​​display panel according to claim 1, wherein: The determining whether there is a splicing gap according to the displayed test picture includes: Acquiring the captured image information of the test screen; According to the image information, respectively obtaining brightness values ​​of the spliced ​​portions and the non-spliced ​​portions of the spliced ​​display panel; The difference between the brightness value of the spliced ​​portion and the brightness value of the non-spliced ​​portion is compared with a set threshold value, and when the difference is greater than the set threshold value, it is determined that the splicing gap exists at the splicing portion.

4. The method for repairing a seam of a spliced ​​display panel according to claim 3, wherein: When it is determined that the splicing gap exists, obtaining the seam repair coefficient at the splicing gap includes: Determine an adjusted grayscale value according to the grayscale value of the splicing portion corresponding to the splicing gap and the grayscale value of the non-splicing portion, wherein a difference between a brightness value of the splicing portion at the adjusted grayscale value and a brightness value of the non-splicing portion is less than the set threshold; The seam repair coefficient is obtained according to the grayscale value of the joint corresponding to the joint gap and the adjusted grayscale value.

5. The method for repairing the seams of a spliced ​​display panel according to claim 3, wherein: When the spliced ​​display panel displays a playback picture, adjusting the pixel grayscale at the splicing gap according to the seam repair coefficient includes: According to the seam repair coefficient, the pixel grayscale of at least one row / column of display units corresponding to the splicing gap is adjusted, The number of rows / columns of the display unit adjusted according to the seam repair coefficient is related to the difference between the brightness value of the splicing portion and the brightness value of the non-splicing portion.

6. The method for repairing a seam of a spliced ​​display panel according to claim 1, wherein: The seam repairing method further comprises: splicing at least two display sub-panels to obtain the spliced ​​display panel; and Displaying a pure color picture on the spliced ​​display panel, Wherein, judging whether there is a splicing gap according to the displayed test picture includes: Obtain the brightness values ​​of the adjacent display sub-panels at the joint and non-joint locations respectively; When the difference between the brightness value at the joint of the adjacent display sub-panels and the brightness value at the non-joined portion of the adjacent display sub-panels is greater than a set threshold, it is determined that the joint gap exists at the joint of the adjacent display sub-panels; The step of obtaining the seam repair coefficient at the splicing gap includes: Determine an adjusted grayscale value according to the grayscale value of the splicing portion corresponding to the splicing gap and the grayscale value of the non-splicing portion, wherein a difference between a brightness value of the splicing portion at the adjusted grayscale value and a brightness value of the non-splicing portion is less than the set threshold; The seam repair coefficient is determined according to the ratio of the grayscale value of the joint corresponding to the joint gap to the adjusted grayscale value.

7. The method for repairing a seam of a spliced ​​display panel according to claim 6, wherein: The pure color picture includes at least one selected from a red picture, a green picture and a blue picture.

8. A seam repairing device for splicing display panels, comprising: An acquisition unit, used for acquiring a test picture displayed on the spliced ​​display panel; A judging unit, used for judging whether there is a splicing gap according to the displayed test picture; A calculation unit, used for calculating and obtaining a seam repair coefficient at the splicing gap when it is determined that the splicing gap exists; as well as The adjusting unit is used to adjust the pixel grayscale at the splicing gap according to the seam repair coefficient when the splicing display panel displays the playback picture.

9. The seam repairing device for spliced ​​display panels according to claim 8, wherein: The seam repairing device also includes: A control card is connected to the operation unit to obtain the seam repair coefficient, and uses the seam repair coefficient as a new correction coefficient to replace the stored existing correction coefficient.

10. The seam repairing device for spliced ​​display panels according to claim 8, wherein: The acquiring unit captures and acquires image information of the test screen; The judgment unit obtains the brightness values ​​of the spliced ​​portion and the non-spliced ​​portion of the spliced ​​display panel according to the image information, and compares the difference between the brightness value of the spliced ​​portion and the brightness value of the non-spliced ​​portion with a set threshold; when the difference is greater than the set threshold, the judgment unit judges that the splicing gap exists at the splicing portion; The operation unit determines the adjusted grayscale value according to the grayscale value of the splicing portion corresponding to the splicing gap and the grayscale value of the non-splicing portion, and obtains the seam repair coefficient according to the grayscale value of the splicing portion corresponding to the splicing gap and the adjusted grayscale value, wherein the difference between the brightness value of the splicing portion at the adjusted grayscale value and the brightness value of the non-splicing portion is less than the set threshold.

11. A display panel, comprising: A seam repairing device for a spliced ​​display panel as claimed in any one of claims 8 to 10.

12. An electronic device comprising: A spliced ​​display panel formed by splicing a plurality of display sub-panels; as well as A seam repairing device for a spliced ​​display panel as claimed in any one of claims 8 to 10.

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