CN113223415A - Spliced display screen, liquid crystal deflection voltage adjusting method and display adjusting method - Google Patents
Spliced display screen, liquid crystal deflection voltage adjusting method and display adjusting method Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
- G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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Abstract
The embodiment of the invention discloses a spliced display screen, a liquid crystal deflection voltage adjusting method and a display adjusting method. In one embodiment, the tiled display screen includes: a plurality of liquid crystal display of concatenation, liquid crystal display include liquid crystal display panel and cover plate glass, and cover plate glass's the edge that is close to concatenation department is the arc region. This embodiment sets up the edge that a plurality of liquid crystal display are close to the concatenation department into the arc for the top of concatenation department is refracted through the arc region to the light of display area, enlarges the picture of display area, makes people's eye can see the image of display area, shields the gap between each liquid crystal display, and people's eye can not see the piece, thereby realizes zero piece effect.
Description
Technical Field
The invention relates to the technical field of display. And more particularly, to a tiled display screen, a liquid crystal deflection voltage adjustment method, and a display adjustment method.
Background
In scenes such as meeting rooms, public places, command centers and the like, super-large-area display (the display area is far larger than that of a conventional display) is often used, the super-large-area display generally adopts a splicing display mode, a splicing display device is formed by splicing a plurality of conventional displays, and an image signal to be displayed is divided into a plurality of parts by an image divider and is respectively transmitted to the conventional displays for display.
However, the conventional display has frames with a certain width, and in the process of realizing splicing, the frames form splicing positions, and the splicing positions cannot be displayed, so that the display effect is poor, and the display picture has a split feeling.
Disclosure of Invention
The invention aims to provide a spliced display screen, a liquid crystal deflection voltage adjusting method and a display adjusting method, and aims to solve at least one of the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a spliced display screen which comprises a plurality of spliced liquid crystal display screens, wherein each liquid crystal display screen comprises a liquid crystal display panel and cover plate glass, and the edge of the cover plate glass close to the spliced part is an arc-shaped area.
According to the spliced display screen provided by the first aspect of the invention, the edges of the plurality of liquid crystal display screens close to the spliced part are arranged into an arc shape, so that light rays in the display area are refracted to the upper part of the spliced part through the arc-shaped area, the picture of the display area is enlarged, human eyes can see images in the display area, gaps among the liquid crystal display screens are shielded, and the spliced seam cannot be seen by the human eyes, so that the zero-spliced seam effect is realized.
In one possible implementation manner, the arc-shaped area comprises a first arc-shaped area and a second arc-shaped area which is positioned on one side of the first arc-shaped area far away from the center of the cover glass, and the curvature radius of the first arc-shaped area is larger than that of the second arc-shaped area.
This implementation, through setting up the radius of curvature in first arc region to be greater than the regional radius of curvature of second arc and can strengthen the refraction efficiency to the emergent light of display area, improve display efficiency.
In one possible implementation, the length of the projection of the first arc-shaped region on the bottom surface of the cover glass is greater than the length of the projection of the second arc-shaped region on the bottom surface of the cover glass.
This implementation mode, through being greater than the length of the projection of second arc region in the cover glass bottom surface with the length of the projection of first arc region in the cover glass bottom surface also can strengthen the refraction efficiency to the emergent light of display area, improve display efficiency.
In one possible implementation, the arc region further includes a straight region located on a side of the second arc region away from the center of the cover glass.
This implementation mode sets up straight region can be convenient for LCD and splices, avoids splice department to have the gap, the demonstration that leads to splits scheduling problem.
In one possible implementation, the length of the flat region is smaller than the length of the projection of the second arc-shaped region on the bottom surface of the cover glass.
This implementation mode is through the thickness that reduces straight region for first arc region and second arc region are then relative big more, and the cover plate glass arc region is better to the emergent light refracting index of display area, and display effect is better.
A second aspect of the present invention provides a method for obtaining an adjustment value of a liquid crystal deflection voltage of a tiled display screen provided in the first aspect of the present invention, including:
driving at least one liquid crystal display screen to display a test picture with a set gray scale;
collecting brightness values of a plurality of set distances from the edge close to the splicing part of a liquid crystal display screen displaying a test picture, wherein the brightness value of each set distance is the average value of the brightness values of a plurality of positions on the set distance;
acquiring a brightness adjusting value of each set distance according to the brightness value of each set distance and a preset brightness difference value, so that the difference values of the brightness adjusting values of adjacent set distances are equal;
and obtaining the liquid crystal deflection voltage regulating value of the pixel corresponding to each set distance according to the brightness regulating value of each set distance and the gamma curve of the liquid crystal display screen.
Based on the method provided by the second aspect of the invention, the problems of dark display and poor visual effect at the spliced part can be solved by improving the deflection voltage of the pixels close to the spliced part.
In one possible implementation, the brightness value of each set distance is an average of the brightness values of more than three positions over the set distance.
According to the implementation mode, the average value of each set distance is calculated, so that the test accuracy can be improved, and the method is simple to calculate and easy to implement.
In one possible implementation, the plurality of set distances are a plurality of set distances that are equally spaced.
According to the implementation mode, the plurality of set distances are designed at equal intervals, so that statistics and calculation can be facilitated.
In one possible implementation, the set distance of the edge closest to the splice among the plurality of set distances is 1mm from the edge closest to the splice.
In one possible implementation manner, the number of the plurality of set distances is 8 to 12, and the distance between adjacent set distances is 1 mm.
According to the implementation mode, the adjusting distance is 8-12 mm away from the edge, the number of pixels corresponding to deflection voltage needing to be adjusted is small, the overall brightness of the liquid crystal display is uniform, and the display effect is good.
In one possible implementation, the preset luminance difference value is 25nit to 35 nit.
According to the implementation mode, the brightness difference value is 25nit-35nit, the brightness change is gentle in the difference value range, the overall brightness of the liquid crystal display is uniform, and the human eyes have better watching experience.
The third aspect of the present invention provides a display adjustment method for a tiled display screen provided in the first aspect of the present invention, including:
driving at least one liquid crystal display screen to display a plurality of test pictures with set gray scales;
for each test picture with set gray scale, collecting the brightness values of a plurality of set distances from the edge close to the splicing part of the liquid crystal display screen displaying the test picture, wherein the brightness value of each set distance is the average value of the brightness values of a plurality of positions on the set distance;
for each test picture with set gray scale, acquiring a brightness adjusting value of each set distance according to the brightness value of each set distance and a preset brightness difference value, so that the brightness adjusting values of adjacent set distances have equal difference values;
for each test picture with set gray scale, obtaining the liquid crystal deflection voltage regulating value of the pixel corresponding to each set distance according to the brightness regulating value of each set distance and the gamma curve of the liquid crystal display screen;
when the spliced display screen displays, the liquid crystal deflection voltage set value under the corresponding set gray scale is obtained according to the display gray scale set value of the pixel corresponding to each set distance, and the corresponding pixel is driven to display according to the obtained liquid crystal deflection voltage adjusting value.
According to the display adjusting method provided by the third aspect of the invention, the problems of dark display and poor visual effect at the splicing position can be solved by improving the deflection voltage of the pixels close to the splicing position.
The invention has the following beneficial effects:
according to the technical scheme provided by the invention, on one hand, the edges of the plurality of liquid crystal display screens close to the splicing position are arranged into an arc shape, so that light rays of the display area are refracted to the upper part of the splicing position through the arc-shaped area, the picture of the display area is enlarged, human eyes can see images of the display area, gaps among the liquid crystal display screens are shielded, and the splicing seams cannot be seen by the human eyes, so that the zero splicing seam effect is realized. On the other hand, the problems of dark display and poor visual effect at the splicing position can be solved by improving the deflection voltage of the pixels close to the splicing position.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of a tiled display implemented in the prior art.
Fig. 2 shows a schematic diagram of the light emission of a tiled display screen in the prior art.
Fig. 3 shows a schematic structural diagram of a tiled display screen provided by an embodiment of the present invention.
Fig. 4 shows a light-emitting schematic diagram of a tiled display screen provided by the embodiment of the invention.
Fig. 5 shows a structure diagram of an arc-shaped edge area of a tiled display screen according to an embodiment of the present invention.
Fig. 6 shows a flowchart of a display adjustment method for a tiled display screen according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to the following examples and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
With the development of society, large-sized public display screens are widely used. Due to process and cost constraints, the size of a single display typically does not exceed 60 inches. Large size displays are typically implemented in the prior art using tiled screen technology. Referring to fig. 1, splicing a plurality of displays to form a spliced wall to realize a large screen display has been applied to many occasions (e.g., conference rooms, public places, command centers, etc.).
In the field of splicing technology, most of the commonly used displays are Liquid Crystal Displays (LCDs) and the like, the outermost layer of the screen of the display is Cover Glass (CG), and the Cover Glass mainly plays a role in protecting the inner screen of the mobile phone and decorating the appearance of the display. Because the cover plate glass has certain width, a plurality of displays have obvious splicing positions after being spliced, the picture quality is influenced, and the comfort level of a viewer is reduced.
In one specific example, as shown in FIG. 2, a conventional cover glass is flat, i.e., any point on the glass is selected to be in a plane with other points on the glass. When the liquid crystal display screen is spliced, because the glass at the spliced part is planar, emergent light of the display panel cannot be emitted from the spliced part, so that a display picture has strong split feeling.
In order to solve the above problems in the prior art, an embodiment of the present invention provides a tiled display screen, which includes a plurality of liquid crystal display panels that are tiled, where the liquid crystal display panels include liquid crystal display panels and cover glasses, and an edge of the cover glass near the tiled portion is an arc-shaped area, as shown in fig. 3.
Certainly, the liquid crystal display screen further comprises a backlight module, an upper polarizer, a lower polarizer and other devices, wherein the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer which is defined in an area enclosed by the frame sealing glue after the array substrate and the color film substrate are in box alignment. The present invention is not particularly limited thereto.
It should be noted that, for a single lcd panel for splicing, each side edge may be an arc-shaped area to achieve any splicing manner.
In a specific example, the edge of the cover glass close to the joint is designed to be an arc-shaped area, as shown in fig. 4, the emergent light of the display area can be refracted to the upper side of the joint in the arc-shaped area of the glass, so that the image of the display area can be seen by human eyes, the joint can not be seen, and the seamless joint effect of the spliced screen is realized.
The concatenation display screen that this embodiment provided sets up to the arc through the edge that is close to the concatenation department with a plurality of liquid crystal display for the top of concatenation department is refracted through the arc region to the light of display area, enlarges the picture in display area, makes people's eye can see the image of display area, shields the gap between each liquid crystal display, and people's eye can not see the piece, thereby realizes zero piece effect.
In addition, in order to further improve the display effect, the radian of the arc-shaped area needs to be processed. Therefore, in some embodiments, as shown in fig. 5, the arc region of the liquid crystal display panel includes a first arc region and a second arc region located on a side of the first arc region away from the center of the cover glass, and the radius of curvature of the first arc region is greater than the radius of curvature of the second arc region.
In one particular example, with continued reference to FIG. 5, the radius of curvature of the first arcuate region is set to 3mm and the radius of curvature of the second arcuate region is 2.7 mm.
It is easy to understand that, being closer to the display area, the influence degree on light is larger, and the refractive efficiency of emergent light to the display area can be strengthened by setting the curvature radius of the first arc-shaped area to be larger than that of the second arc-shaped area, thereby improving the display efficiency.
With continued reference to fig. 5, in some embodiments, the length of the projection of the first curved region on the bottom surface of the cover glass is greater than the length of the projection of the second curved region on the bottom surface of the cover glass.
In a specific example, the length of the projection of the first arc-shaped area on the bottom surface of the cover glass is 1.8mm, and the length of the projection of the second arc-shaped area on the bottom surface of the cover glass is 1 mm.
Similarly, the length of the projection of the first arc-shaped area on the bottom surface of the cover glass is longer than that of the projection of the second arc-shaped area on the bottom surface of the cover glass, so that the refraction efficiency of emergent light of the display area can be enhanced, and the display efficiency is improved.
In some embodiments, the curved region further comprises a flat region located on a side of the second curved region away from the center of the cover glass.
Referring to fig. 5, the straight area is arranged to facilitate splicing of the liquid crystal display, so that the problems of display cracking and the like caused by gaps at the spliced position are solved.
Specifically, the length of the flat region is smaller than the length of the projection of the second arc region on the bottom surface of the cover glass.
The thickness of the cover glass is constant. Thickness depends on cover glass's specification, and straight region can not refract display area's emergent light, and the thickness in straight region is less, and first arc region and second arc region then are relative big more, and cover glass arc region is better to display area's emergent light refracting index, and display effect is better.
In one specific example, an arc-shaped region to the edge of the splice can be achieved by designing the cover glass as a 2.5D glass (also known as a water droplet screen).
Specifically, compared with the conventional cover glass, the 2.5D glass has a flat area in the center and then the edges are subjected to radian processing on the basis of the flat glass.
Although the display effect can be improved by setting the edge of the liquid crystal display screen close to the splicing part as the arc-shaped area, when the emergent light of the display area is refracted to form a display screen, only part of the emergent light is refracted, and compared with the plane area, the formed display screen is darker, namely, the arc-shaped area has the problem of dark display.
In order to solve the problem of dark display in the arc-shaped area, another embodiment of the present invention provides a display adjustment method for a tiled display screen, as shown in fig. 6, the display adjustment method includes:
s10, driving at least one liquid crystal display screen to display a plurality of test pictures with set gray scales;
it should be noted that, the test pictures in this embodiment are all pure color pictures,the set gray levels are different, the brightness values of the test pictures displayed by the liquid crystal display are different, any one set gray level corresponds to one display brightness, for example, the test picture with the set gray level of 0 corresponds to the test picture with the brightness value of L0Setting the test frame with a gray level of 125, wherein the corresponding test frame has a brightness value of L125Setting a test frame with a gray scale of 255, wherein the brightness value of the corresponding test frame is L255。
And S20, acquiring the brightness values of the liquid crystal display screen displaying the test picture at a plurality of set distances from the edge close to the splicing part for each test picture with set gray scale, wherein the brightness value of each set distance is the average value of the brightness values of a plurality of positions on the set distance.
In a specific example, taking an example of setting the gray scale value to be 255, an arc area is an edge area (i.e., a splicing area) of a liquid crystal display, the liquid crystal display is taken as the length of a splicing side, the liquid crystal display is divided into four areas, three bisectors are defined as Line1, Line2 and Line3, and for Line1, a plurality of test points (e.g., 10 points) are obtained by taking one test point every set distance (e.g., every 1mm) from a side close to the arc area as a starting point: l1,1, L1,2, … …; collecting the brightness values corresponding to a plurality of test points to form a relation table 1 between the test points and the brightness values corresponding to Line 1:
based on the same method, a relationship table 2 between the test points and the luminance values corresponding to Line2 was formed:
form the relationship between the test points and the luminance values corresponding to Line3 table 3:
acquiring the average value of the brightness values of the adjacent set distances on the three equipartition lines, for example, for the three equipartition lines with the starting point of the arc-shaped area as the initial point, acquiring the average value of the brightness of the first set distance of the liquid crystal display as LV1 ═ L1, (brightness value + L2 corresponding to 1, brightness value + L3 corresponding to 1), brightness value corresponding to 1)/3;
similarly, the mean LVx of the luminance values for different set distances is (L1, luminance value + L2 corresponding to x, luminance value + L3 corresponding to x, luminance value corresponding to x)/3; the brightness average values at different set distances are obtained as table 4:
it should be noted that the set distance can be set based on the screen size of the lcd, for example, a smaller set distance (1mm) is selected for a smaller lcd (e.g., 55 inches), and a larger set distance (2mm) is selected for a larger lcd (e.g., 105 inches). Meanwhile, when the liquid crystal display is divided into regions to form the uniform line, the uniform line may be set based on the size of the liquid crystal display, for example, for a liquid crystal display with a small size (for example, 55 inches), the liquid crystal display is uniformly divided into a small number of regions (4 regions), and for a liquid crystal display with a large size (for example, 105 inches), the liquid crystal display is uniformly divided into a large number of regions (8 regions). The invention is not limited in this regard.
For the selection of the number of the test points, it is preferable that the method starts from the initial point and ends when the difference between the brightness values of the test points on the liquid crystal display is small, or may be in other manners, for example, the method starts from the initial point and ends when the screen is a plane, which is not limited in the present invention.
In addition, in order to facilitate the calculation and data statistics, in some embodiments, the plurality of set distances are a plurality of set distances that are equally spaced.
S30, for each test picture with set gray scale, obtaining the brightness adjusting value of each set distance according to the brightness value of each set distance and the preset brightness difference value, so that the difference values of the brightness adjusting values of adjacent set distances are equal;
specifically, continuing with the above example, taking the difference between the brightness adjustment values of the adjacent set distances as 30nit as an example, as can be seen from table 4, if the average brightness value of the first set position is LV 1-192.13 nit, the brightness value of the second set position is LV 2-LV 1+30nit, the brightness value of the third set position is LV 3-LV 2+30nit, and the brightness value of the fourth set position is LV 4-LV 3+30nit, … …, so as to obtain the brightness value table 5 for each set distance:
it should be noted that, since the test point at the first set distance is the closest arc-shaped region and the near arc-shaped region (splicing region) is the side far from the display region, the brightness of the test point cannot be adjusted, and therefore, the brightness of the test point at different set distances is sequentially adjusted based on the brightness of the test point at the first set distance.
It should be noted that, in this example, the difference between the brightness adjustment values of adjacent set distances is only 30nit, and other differences between the brightness adjustment values may be selected. However, for the viewer, too small brightness adjustment value difference requires more test points to be adjusted, which results in higher cost, while too large brightness adjustment value difference still shows that the display picture close to the arc-shaped area is darker, and the preferred brightness difference value range is 25nit to 35 nit.
And S40, for each test picture with set gray scale, obtaining the liquid crystal deflection voltage adjusting value of the pixel corresponding to each set distance according to the brightness adjusting value of each set distance and the gamma curve of the liquid crystal display screen.
It is easy to understand that, for the liquid crystal display, it has a fixed gamma curve, and the gamma value of each position pixel is constant, so the liquid crystal deflection voltage adjusting value of the pixel corresponding to each set distance can be obtained according to the brightness adjusting value of each set distance and the gamma curve of the liquid crystal display screen. Note that, for each set distance position, a corresponding pixel is associated.
Specifically, continuing with the foregoing example, the deflection voltage values for the first set distance positions are maintained constant, and the deflection voltage adjustment values for the other set distance positions are as in table 6:
it should be noted that, in this embodiment, only the set gray scale value is 255 as an example for description, and actually, the adjustment values of the liquid crystal deflection voltages of the pixels corresponding to the set distances corresponding to different set gray scales need to be obtained through all the gray scale values.
And S50, when the spliced display screen displays, acquiring a liquid crystal deflection voltage set value under a corresponding set gray scale according to the display gray scale set value of the pixel corresponding to each set distance, and driving the corresponding pixel to display according to the acquired liquid crystal deflection voltage adjusting value.
According to the display adjusting method of the tiled display screen, the problems of dark display and poor visual effect at the tiled part are solved by improving the deflection voltage of the pixels close to the tiled part.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly through two or more elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is further noted that, in the description of the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations and modifications can be made on the basis of the above description, and all embodiments cannot be exhaustive, and all obvious variations and modifications belonging to the technical scheme of the present invention are within the protection scope of the present invention.
Claims (12)
1. The utility model provides a tiled display screen, includes a plurality of liquid crystal display of concatenation, liquid crystal display includes liquid crystal display panel and cover plate glass, its characterized in that, cover plate glass's the edge that is close to concatenation department is the arc region.
2. The tiled display screen of claim 1, wherein the arc-shaped areas include a first arc-shaped area and a second arc-shaped area located on a side of the first arc-shaped area away from the center of the cover glass, and the radius of curvature of the first arc-shaped area is greater than the radius of curvature of the second arc-shaped area.
3. The tiled display screen of claim 2, wherein the length of the projection of the first curved region on the bottom surface of the cover glass is greater than the length of the projection of the second curved region on the bottom surface of the cover glass.
4. The tiled display screen of claim 2, wherein the arc-shaped area further comprises a flat area located on a side of the second arc-shaped area away from the center of the cover glass.
5. The tiled display screen of claim 1, wherein the length of the flat area is less than the length of the projection of the second curved area on the bottom surface of the cover glass.
6. A method for obtaining the adjustment value of the liquid crystal deflection voltage of the spliced display screen as claimed in any one of claims 1 to 5, which comprises the following steps:
driving at least one liquid crystal display screen to display a test picture with a set gray scale;
collecting brightness values of a plurality of set distances from the edge close to the splicing part of a liquid crystal display screen displaying a test picture, wherein the brightness value of each set distance is the average value of the brightness values of a plurality of positions on the set distance;
acquiring a brightness adjusting value of each set distance according to the brightness value of each set distance and a preset brightness difference value, so that the difference values of the brightness adjusting values of adjacent set distances are equal;
and obtaining the liquid crystal deflection voltage regulating value of the pixel corresponding to each set distance according to the brightness regulating value of each set distance and the gamma curve of the liquid crystal display screen.
7. The method of claim 6, wherein the brightness value of each set distance is an average of the brightness values of three or more positions at the set distance.
8. The method of claim 6, wherein the plurality of set distances are equally spaced.
9. The method of claim 8, wherein the set distance of the edge closest to the splice among the plurality of set distances is 1mm from the edge closest to the splice.
10. The method of claim 9, wherein the plurality of set distances is from 8 to 12, and wherein adjacent set distances are spaced apart by 1 mm.
11. The method according to claim 10, wherein the preset luminance difference value is 25nit-35 nit.
12. A display adjustment method for a tiled display screen according to any of claims 1-5, comprising:
driving at least one liquid crystal display screen to display a plurality of test pictures with set gray scales;
for each test picture with set gray scale, collecting the brightness values of a plurality of set distances from the edge close to the splicing part of the liquid crystal display screen displaying the test picture, wherein the brightness value of each set distance is the average value of the brightness values of a plurality of positions on the set distance;
for each test picture with set gray scale, acquiring a brightness adjusting value of each set distance according to the brightness value of each set distance and a preset brightness difference value, so that the difference values of the brightness adjusting values of adjacent set distances are equal;
for each test picture with set gray scale, obtaining the liquid crystal deflection voltage regulating value of the pixel corresponding to each set distance according to the brightness regulating value of each set distance and the gamma curve of the liquid crystal display screen;
when the spliced display screen displays, the liquid crystal deflection voltage set value under the corresponding set gray scale is obtained according to the display gray scale set value of the pixel corresponding to each set distance, and the corresponding pixel is driven to display according to the obtained liquid crystal deflection voltage adjusting value.
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