WO2024016546A1 - Design method for display screen tiled along spherical surface, and display screen - Google Patents

Abstract

A design method for a display screen tiled along a spherical surface, and a display screen. The method comprises: calculating an optimal distance between adjacent light-emitting pixels according to the diameter of a spherical surface, the resolution of a display screen and a horizontal division angle in an equatorial plane of the spherical surface (S1); calculating the height of each plane module according to the optimal distance and characteristic parameters of a control board of the light-emitting pixels (S2); calculating a vertical division angle according to the diameter of the spherical surface and the height of each plane module, and calculating the number of plane module rows p from the equator of the spherical surface to a pole (S3); calculating the number of plane module columns q according to a horizontal field angle and the horizontal division angle of the display screen (S4); calculating the upper and lower side lengths of each plane module according to the diameter of the display screen and the vertical division angle (S5); calculating the aperture and number of sound holes capable of being formed on the plane module (S6, S7); and manufacturing plane modules according to the calculated data, and tiling same into a display screen (S8). The designed display screen is simple in processing technology, and the precision is easy to control.

Description

Design method and display screen of display screen spliced along spherical surface Technical field

The invention relates to the technical field of display screen design and manufacturing, and in particular to a design method for a display screen spliced along a spherical surface and a display screen.

Background technique

Spherical or quadratic curved displays have been used in many scenarios. Since the surface of curved displays (such as dome screens and dome screens) is an arc surface, spherical displays designed by ordinary manufacturers use arc modules. splicing. However, when using curved panels or curved flat panels to splice dome screens, there will be the following problems: Whether flat panels or curved panels are used, dense display components and printed circuits are arranged on the modules. If the flat panels are bent and spliced, Domes, printed circuits and their connecting nodes are prone to failure and even breakage. Moreover, considering the pulling force of the pad at the soldering position after bending, the driver chip must be perpendicular to the bending direction. In addition, since the dome screen is a double-curved surface, the curved panel and the bent flat panel used in the existing technology are both single-curved. Therefore, when splicing, a bulge will appear at the joint between the single-curved surface and the single-curved surface, resulting in a display Inconsistency in the picture.

Contents of the invention

In order to solve the above technical problems, the present invention proposes a design method and display screen for a display screen that is spliced along a spherical surface. Flat modules without bending are directly spliced along a spherical surface to form a display screen. Since the four sides of the flat panel are all straight lines, The processing technology is simple and easy to control the accuracy. There is no need to consider the deviation caused by bending deformation. Especially when the pixel pitch is small, such as 4mm or less (that is, high-definition or high-quality requirements), a flat panel is more conducive to pixel-to-pixel spacing. Control, when the pixel spacing does not change significantly, the picture can be displayed more clearly and accurately. Moreover, the selection of the driver chip on the driving surface on the flat panel and the placement direction of the driver chip are not restricted, and the splicing joints are not restricted. There will be obvious bulges and the display effect will be better. However, the inventor of the present invention also found that when designing a display screen, a spherical display screen made of curved panels or curved flat panels can be designed according to a standard spherical surface, and the shape and size of each splicing module are in accordance with the standard The calculation is performed on a spherical surface, and since the display screen of the present invention is spliced together from flat modules, it is not strictly a standard spherical surface. Therefore, special design is required in terms of the shape and size of the modules, otherwise the splicing will fail. Or it may increase the difficulty of splicing and affect the production efficiency of the display screen.

In view of this, the design method of the display screen spliced along the spherical surface proposed by the present invention and the specific technical solution of the display screen are as follows:

A design method for a display screen spliced along a spherical surface. The display screen is composed of a plurality of planar modules spliced together along a spherical surface. The plurality of planar modules are divided into first sections along the meridian direction of the spherical surface from the equator to one pole. To the p-th row, the spherical surface is divided into q columns along the latitudinal direction. The planar modules in the same row have the same shape and size. The planar modules in the same column form a petal shape. Each of the planar modules is provided with at least one The luminescent pixels, p and q are both positive integers, and the method includes the following steps: calculating the pixels according to the diameter of the spherical surface, the resolution of the display screen and the horizontal division angle of the display screen in the equatorial plane of the spherical surface. The optimal spacing between adjacent luminescent pixels on the spherical display screen; calculating the height of each planar module according to the optimal spacing between adjacent luminescent pixels on the display screen and the characteristic parameters of the control panel of the luminescent pixels; Calculate the vertical division angle based on the diameter of the display screen and the height of each plane module, and calculate the number p of plane module rows from the equator to one pole of the sphere based on the vertical division angle; The horizontal field of view angle and the horizontal division angle are used to calculate the number of plane module columns q; the upper and lower side lengths of each plane module are calculated according to the diameter of the spherical surface and the vertical division angle; and the length of the upper and lower sides of each plane module is calculated according to the adjacent luminescence on the display screen. The optimal spacing of pixels, the size of the light-emitting pixels, and the prohibited wiring distance are used to calculate the maximum aperture of the sound-transmitting holes that can be opened on the planar module; according to the characteristic parameters of the control board of the light-emitting pixels, each planar module The maximum number of sound-transmitting holes that can be opened on each plane module is calculated based on the upper side length and the optimal spacing between adjacent luminous pixels on the display screen; based on the calculated row number p of the plane module, the The number of rows of planar modules q, the length and height of the upper and lower sides of each planar module, the maximum aperture of sound-transmitting holes that can be opened on the planar module, and the maximum number of sound-transmitting holes that can be opened on each of the planar modules The plurality of planar modules are made so that the plurality of planar modules are spliced and combined to form the display screen.

The design method of the display screen spliced along the spherical surface also includes: calculating the upper and lower angles of adjacent plane modules in the same row according to the horizontal division angle; and calculating the upper and lower side lengths and heights of each of the plane modules. Calculate the hypotenuse length of each plane module, and calculate the angle between the luminous surfaces of adjacent plane modules in the same row based on the horizontal dividing angle, the hypotenuse length and height of each plane module; according to the spherical surface The diameter and the height of each of the plane modules are used to calculate the angle between the luminous surfaces of adjacent plane modules in the same row, so that the angle between the upper and lower sides of adjacent plane modules in the same row and the angle between the luminous surfaces of adjacent plane modules in the same row are calculated. The plurality of plane modules are spliced and combined according to the angle between the light-emitting surfaces of adjacent plane modules in the same row.

In the nth row, each i plane module is merged into an i-in-one module, which is designed and produced as a whole, where i= ^2k , 1<n≤p, k is a positive integer, The method also includes: calculating the number of i-in-one modules in each row according to the number of plane module columns q; calculating the number of i-in-one modules in each row according to the upper side length of each plane module in the n-1th row and the horizontal division angle. The length of the lower side of each i-in-one module in the n-th row; calculate the length of each i-in-one module in the n-th row based on the upper side length and the horizontal dividing angle of each of the plane modules in the n-th row Upper side length; calculate the height of each i-in-one module in the n-th row based on the upper and lower side lengths of each i-in-one module in the n-th row and the hypotenuse length of each flat module in the n-th row ; Calculate the size of the patchwork produced by each i-in-one module in the n-th row based on the lower side length and the horizontal dividing angle of each i-in-one module in the n-th row.

The design method of the display screen spliced along the spherical surface also includes: based on the number of sound-transmitting holes actually opened on each of the planar modules, the aperture of each sound-transmitting hole actually opened, and the number of sound-transmitting holes actually opened on each plane module. The sound transmittance of each planar module is calculated based on the length of the upper side of the planar module and the height of each planar module.

The design method of the display screen spliced along the spherical surface also includes: based on the optimal spacing of adjacent luminescent pixels on the display screen, the angle between the luminous surfaces of adjacent planar modules in the same row, and the luminous surface angles of adjacent planar modules in the same column. Calculate the actual spacing between adjacent luminescent pixels between adjacent planar modules by using the plane angle; calculate the spacing error rate based on the optimal spacing between adjacent luminescent pixels on the display screen and the actual spacing between adjacent luminescent pixels between adjacent planar modules. .

The method for designing a display screen spliced along a spherical surface also includes: determining whether the sound transmittance and/or the spacing error rate meet preset conditions, and if not, redesigning the display screen.

Calculate the optimal spacing between adjacent light-emitting pixels on the display screen according to the following formula:

Wherein, P is the optimal spacing between adjacent luminous pixels on the display screen, c is the sum of the chord lengths of the display screen within the equatorial circumference of the spherical surface,

D is the diameter of the spherical surface, θ is the horizontal dividing angle, and N is the resolution.

The maximum height of the smallest unit of the planar module is:

_Hmax ＝ _Smax ·P

Wherein, H _max is the maximum height of the smallest unit of the flat module, S _max is the maximum scanning number of the smallest unit of the flat module, T is the refresh cycle of the display screen, and K _r is the control of the light-emitting pixels. The grayscale constant of the chip in the board, f _max is the highest refresh rate of GCLK of the chip in the control board of the light-emitting pixel, N _s is the number of GCLKs in each scan, N _t is the number of GCLKs in the blanking time,

The height H of each planar module in the first to p-1th rows is an integer multiple of the maximum height H _max of the smallest unit of the planar module.

The vertical dividing angle is calculated according to the following formula:

When the display screen includes two parts from the equator to the two poles of the spherical surface, the number p of the plane module rows is calculated according to the following formula:

When the display screen includes a portion from the equator of the sphere to any pole, the number p of the plane module rows is calculated according to the following formula:

Where, γ is the vertical dividing angle.

Calculate the number of plane module columns q according to the following formula:

Where, V is the horizontal field of view angle of the display screen.

Calculate the upper and lower side lengths of each of the planar modules according to the following formula:

Among them, L _an represents the upper side length of each plane module in the nth row, L _bn represents the lower side length of each plane module in the nth row, D is the diameter of the spherical surface, and θ is the horizontal division. horn.

Calculate the hypotenuse length of each of the planar modules according to the following formula:

Where, _Bn represents the hypotenuse length of each planar module in the nth row.

Calculate the lower side length of each i-in-one module in the nth row according to the following formula:

Calculate the upper side length of each i-in-one module in the nth row according to the following formula:

Calculate the height of each i-in-one module in the nth row according to the following formula:

Calculate the upper and lower angles of adjacent plane modules in the same row according to the following formulas:

α _L =180°-θ

Calculate the angle between the luminous surfaces of adjacent planar modules in the same row according to the following formula:

Calculate the angle between the luminous surfaces of adjacent planar modules in the same row according to the following formula:

Among them, α _L represents the angle between the upper and lower sides of adjacent plane modules in the same row, α _P represents the angle between the luminous surfaces of adjacent plane modules in the same row, and β _P represents the angle between the luminous surfaces of adjacent plane modules in the same column.

In each of the planar modules, the sound-transmitting holes are opened between four adjacent luminous pixels. The maximum aperture of the sound-transmitting holes that can be opened on the planar module is calculated according to the following formula:

Calculate the maximum number of sound-transmitting holes that can be opened on each plane module according to the following formula:

Calculate the sound transmittance of each of the planar modules according to the following formula:

Among them, s _max is the maximum aperture of the sound-transmitting hole that can be opened on the planar module, a ₁ and a ₂ are the two side lengths of the rectangular light-emitting pixel, m is the prohibited wiring distance, q _mmax is the length of each The maximum number of sound-transmitting holes that can be opened on the planar module, b is the number of rows of luminous pixels on each planar module, ξ is the sound transmittance of each planar module, q _m is the sound transmission rate of each planar module The number of sound-transmitting holes actually opened on the module, s _j is the diameter of the j-th sound-transmitting hole actually opened on the planar module, where 0≤q _m ≤q _mmax , 0<s _j ≤s _max .

Calculate the actual spacing between adjacent luminous pixels between adjacent planar modules in the same row according to the following formula:

Calculate the actual spacing between adjacent luminous pixels between adjacent planar modules in the same column according to the following formula:

The spacing error rate is calculated according to the following formula:

Among them, P′ _α is the actual spacing between adjacent luminescent pixels between adjacent planar modules in the same row, P′ _β is the actual spacing between adjacent luminescent pixels between adjacent planar modules in the same column, and η is the spacing error. rate, P′ takes P′ _α or P′ _β .

A display screen designed and manufactured according to the above design method. The display screen is composed of a plurality of planar modules spliced and assembled along a spherical surface. The plurality of planar modules are divided into three parts along the meridian direction of the spherical surface from the equator to one pole. The first to pth rows are divided into q columns along the latitudinal direction of the spherical surface. The planar modules in the same row have the same shape and size. The planar modules in the same column form a petal shape. Each of the planar modules is provided with At least one light-emitting pixel, p and q are both positive integers, where,

The maximum height of the smallest unit of the planar module is:

_Hmax ＝ _Smax ·P

Wherein, H _max is the maximum height of the smallest unit of the flat module, S _max is the maximum scanning number of the smallest unit of the flat module, T is the refresh cycle of the display screen, and K _r is the control of the light-emitting pixels. The grayscale constant of the chip in the board, f _max is the highest refresh rate of GCLK of the chip in the control board of the light-emitting pixel, N _s is the number of GCLKs in each scan, N _t is the number of GCLKs in the blanking time,

The height H of each planar module in the first to p-1th rows is an integer multiple of the maximum height H _max of the smallest unit of the planar module,

The length of the upper and lower sides of each planar module is:

Among them, L _an represents the upper side length of each plane module in the nth row, L _bn represents the lower side length of each plane module in the nth row, D is the diameter of the spherical surface, and θ is the horizontal division. horn,

In each of the planar modules, the sound-transmitting holes are opened between four adjacent luminous pixels. The maximum aperture of the sound-transmitting holes that can be opened on the planar module is:

Among them, s _max is the maximum aperture of the sound-transmitting hole that can be opened on the planar module, a ₁ and a ₂ are the two side lengths of the rectangular light-emitting pixel, m is the prohibited wiring distance,

The maximum number of sound-transmitting holes that can be opened on each planar module is:

Where, _qmmax is the maximum number of sound-transmitting holes that can be opened on each planar module, and b is the number of rows of light-emitting pixels on each planar module.

Beneficial effects of the present invention:

The present invention forms an approximately spherical display screen by splicing flat modules without bending along the spherical surface. The processing technology is simple and the accuracy is easy to control. The display effect of the display screen can be improved. By designing the size, quantity and other data of the flat module, the display screen can be reduced in size. The production difficulty is improved and the production efficiency of the display screen is improved.

Description of drawings

Figure 1 is a flow chart of a design method for a display screen spliced along a spherical surface according to an embodiment of the present invention;

Figure 2 is a schematic diagram of the equatorial plane segmentation of the display screen of an embodiment of the present invention;

Figure 3 is a schematic diagram of the row number division of a display screen according to an embodiment of the present invention;

Figure 4 is a schematic diagram of the size of the planar module at the pole according to an embodiment of the present invention;

Figure 5 is a schematic diagram of the upper and lower sides of a planar module according to an embodiment of the present invention;

Figure 6 is a geometric composition for calculating the size of a plane module according to an embodiment of the present invention;

Figure 7 is a geometric composition for calculating the angle between the upper or lower sides of adjacent plane modules in the same row according to an embodiment of the present invention;

Figure 8 is a geometric composition for calculating the angle between the light-emitting surfaces of adjacent planar modules in the same row according to an embodiment of the present invention;

Figure 9 is a geometric composition for calculating the angle between the light-emitting surfaces of adjacent planar modules in the same row according to an embodiment of the present invention;

Figure 10 is the size calculation geometric composition of the i-in-one module according to one embodiment of the present invention;

Figure 11 is a geometric composition for calculating the aperture diameter of the sound-transmitting hole of a planar module according to one embodiment of the present invention;

Figure 12 is a schematic diagram for calculating the sound transmittance of a planar module according to an embodiment of the present invention;

Figure 13 is a geometric composition for calculating the point spacing between adjacent planar modules according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The display screen of the embodiment of the present invention is composed of multiple planar modules spliced together along the spherical surface. The multiple planar modules are divided into the first to pth rows along the meridian direction of the spherical surface from the equator to one pole, and are divided into q along the latitudinal direction of the spherical surface. Columns, where the planar modules in the same row have the same shape and size, the planar modules in the same column form a petal shape, each planar module is provided with at least one light-emitting pixel, and p and q are both positive integers. In a specific embodiment of the present invention, the light-emitting pixels may be LED lamp beads. The planar module is an inflexible PCB board containing LED lamp beads and drive circuits, or may also include an edge support structure of the PCB board.

As shown in Figure 1, the design method of a display screen spliced along a spherical surface according to the embodiment of the present invention includes the following steps:

S1, calculate the optimal spacing between adjacent luminous pixels on the display screen based on the diameter of the spherical surface, the resolution of the display screen and the horizontal division angle of the display screen in the spherical equatorial plane.

S2: Calculate the height of each plane module based on the optimal spacing between adjacent luminescent pixels on the display screen and the characteristic parameters of the control board of the luminescent pixels.

S3, calculate the vertical division angle based on the diameter of the sphere and the height of each plane module, and calculate the number p of plane module rows from the equator of the sphere to one pole based on the vertical division angle.

S4: Calculate the number of plane module columns q according to the horizontal field of view angle and horizontal division angle of the display screen.

S5, calculate the upper and lower side lengths of each plane module based on the diameter of the spherical surface and the vertical dividing angle.

S6: Calculate the maximum aperture of the sound-transmitting hole that can be opened on the planar module based on the optimal spacing between adjacent luminous pixels on the display screen, the size of the luminescent pixels, and the prohibited wiring distance.

S7: Calculate the maximum number of sound-transmitting holes that can be opened on each plane module based on the characteristic parameters of the control board of the luminous pixels, the upper side length of each plane module, and the optimal spacing between adjacent luminous pixels on the display screen.

S8, based on the calculated number p of plane module rows, the number of plane module columns q, the length and height of the upper and lower sides of each plane module, the maximum aperture of the sound-transmitting holes that can be opened on the plane module, and the number of sound-transmitting holes that can be opened on each plane module The maximum number of sound-transmitting holes is used to make multiple planar modules so that the display screen can be formed by splicing and combining multiple planar modules.

As shown in Figure 2, for a lobe formed by planar modules in the same row, the angle θ corresponding to its projection in the spherical equatorial plane can be called the horizontal dividing angle of the display screen in the spherical equatorial plane. The chord corresponding to this angle The length Δc is called the horizontal chord length of the display screen in the equatorial plane of the sphere. The diameter of the sphere is D, and the radius is D/2. In one embodiment of the present invention, the optimal spacing between adjacent luminescent pixels on the display screen can be calculated according to the following formula:

Among them, P is the optimal spacing between adjacent luminous pixels on the display screen, c is the sum of the chord lengths of the display screen within the equatorial circumference of the sphere,

D is the diameter of the sphere, θ is the horizontal division angle, and N is the resolution.

In one embodiment of the present invention, the minimum display system of the display screen is composed of a sending card, a receiving card and an LED light board. After the LED light board receives the signal transferred by the receiving card, it is driven by a driver chip (column) and a row tube chip. (OK) Go and light up an LED lamp bead. The minimum display system of the display screen determines the smallest unit of the plane module. The maximum height of the smallest unit of the plane module is:

_Hmax ＝ _Smax ·P

Among them, H _max is the maximum height of the smallest unit of the flat module, S _max is the maximum number of scans of the smallest unit of the flat module, T is the refresh cycle of the display screen, which is the reciprocal of the refresh rate of the display screen, and the unit can be milliseconds, for example When the refresh rate of the display screen is 60Hz, T can be 16.67ms, K _r is the grayscale constant of the chip in the control board of the light-emitting pixel, f _max is the highest refresh rate of the chip GCLK in the control board of the light-emitting pixel, N _s is the GCLK in each scan The number, N _t is the number of blanking time GCLK.

The height H of each plane module in the first to p-1th rows is an integer multiple of the maximum height H _max of the smallest unit of the plane module, for example, it can be 2 times, 3 times, etc. After determining the heights of the first to p-1th rows of plane modules, the height of the p-th row of plane modules can be determined based on the overall size of the display screen.

As shown in Figure 3, for each row of plane modules, with the height as the chord and the center of the sphere as the center of the circle, the corresponding angle γ can be called the vertical division angle. In one embodiment of the present invention, the calculation formula of the vertical dividing angle can be obtained according to the cosine theorem:

And γ∈(0,90°)

Among them, γ is the vertical dividing angle.

As shown in Figure 4, if the height of the plane module at the spherical pole is allowed to be greater than the height of the first to p-1th row of plane modules, then the quotient of the total vertical angle and the vertical dividing angle is rounded, which is the row of the plane module. number; if the height of the plane module at the pole of the sphere is not allowed to be greater than the height of the plane modules in the first to p-1th rows, then an additional height needs to be divided at the pole that is smaller than the height of the plane modules in the first to p-1th rows. flat module.

It should be noted that the display screen designed in the embodiment of the present invention does not necessarily occupy the entire spherical surface (the vertical angle range is -90° to 90°, and the horizontal field of view is 360°). It can also occupy only the hemispherical surface, that is, The vertical angle range is from 0 to 90°, and the horizontal field of view can also be any angle within 360°.

The vertical angle range of the display screen is -90° to 90°, which means that the display screen includes two parts from the equator to the poles of the sphere. At this time, the number of plane module rows p can be calculated according to the following formula:

The vertical angle range of the display screen is 0 to 90°, which means that the display screen includes a part from the equator of the sphere to any pole. At this time, the number of plane module rows p can be calculated according to the following formula:

In one embodiment of the present invention, the number of plane module columns q can be calculated according to the following formula:

Among them, V is the horizontal field of view of the display screen.

In one embodiment of the present invention, as shown in Figure 5, the planar module is trapezoidal, and the upper and lower sides are the upper and lower bases of the trapezoid respectively. As shown in Figure 6, a plane module in the first row is an isosceles trapezoid ABCD. The center of the sphere where the display screen is located is O. The midpoint of the bottom BC of the isosceles trapezoid ABCD is F. In △OBF,

Right now

A'D' is the projection line segment of AD on the equatorial plane, and E' is the projection point of the midpoint E of AD on the equatorial plane; it is easy to find that △OA'D' is similar to △OBC, so there is a proportional relationship

And because in △OEE', OE'=OE·cosγ,

So get

Right now

therefore

Extended to the nth layer, according to similar triangles, we can get

And because L _bn =L _an-1 , the length of the upper and lower sides of each plane module is:

Among them, L _an represents the upper side length of each plane module in the nth row, L _bn represents the lower side length of each plane module in the nth row, D is the diameter of the sphere, and θ is the horizontal dividing angle.

According to the Pythagorean theorem, the length of the hypotenuse of each plane module is:

Among them, B _n represents the hypotenuse length of each plane module in the nth row.

Considering the minimum display system of the display screen, that is, the smallest unit of the plane module, there is a situation where there is still a certain distance between the upper edge of the p-th row of plane modules and the pole of the sphere. In this case, after the above-mentioned multiple plane modules are spliced, the surface of the sphere will appear. A hole will be left at the pole. In view of this, in the embodiment of the present invention, one (the display screen includes one part from the equator of the spherical surface to either pole) or two (the display screen includes two parts from the equator of the spherical surface to both poles) can be designed to fill the hole. Q-gon planar module.

It should be noted that the diameter of the spherical surface where the display screen is located and the resolution of the display screen can be set according to needs, such as customer requirements. Theoretically, the smaller the horizontal division angle, the better. However, the size of the minimum display area, production difficulty, etc. also need to be considered. Generally, it can be set based on experience. The number of scans, the chip grayscale constant and the maximum refresh rate of GCLK in the control panel of the luminous pixel, the number of GCLKs in each scan, the number of GCLKs in the blanking time, the refresh cycle of the display screen and other characteristic parameters of the luminous pixel control panel, then Depends on customer requirements and industry standards.

It should be understood that the optimal spacing between adjacent luminescent pixels on the display screen is calculated to meet the required resolution. Since the size of the trapezoidal planar module in the meridional direction (longitudinal direction) is constant, it is always equal to the plane Due to the height of the module, the spacing between adjacent light-emitting pixels in the meridional direction does not need to be adjusted and can be equal to the calculated optimal spacing. As for the spacing between adjacent luminous pixels in the latitudinal direction (transverse direction), since the size of each trapezoidal planar module in the latitudinal direction is inconsistent, the maximum is the length of the lower side and the minimum is the length of the upper side, it needs to be rearranged according to the actual horizontal size. cloth. Specifically, for each row of luminescent pixels on the planar module, the lateral length of the latitude can be divided by the optimal spacing, rounded to an integer to obtain the number of luminescent pixels in the row, and then the luminescent pixels in the row are evenly arranged, adjacent to The distance between the luminescent pixels on the left hypotenuse or the right hypotenuse and the corresponding hypotenuse is half of the spacing between adjacent luminescent pixels in the row, thus ensuring that the spacing between all luminescent pixels at this latitude is approximately the same after the plane modules are spliced. It should be understood that there will be a slight error between the left and right spacing between the rearranged luminous pixels and the optimal spacing. However, since the number of luminous pixels in each row is calculated using rounding, this error is small compared to the entire display screen with a huge size. It will be too large and will not affect the display effect.

After calculating the number of rows p, the number of columns q, and the length and height of each plane module, multiple plane modules can be made according to the calculated data, so that an approximate spherical shape can be formed by splicing and combining multiple plane modules. display. In each planar module, sound-transmitting holes are opened between four adjacent luminescent pixels. The actual number of sound-transmitting holes opened on the planar module is less than or equal to the maximum number of sound-transmitting holes that can be opened on the planar module, and the diameter of each sound-transmitting hole actually opened is less than or equal to the maximum number of sound-transmitting holes that can be opened on the planar module. Maximum hole diameter. That is to say, sound-transmitting holes can be provided between every four adjacent luminescent pixels, or no sound-transmitting holes can be provided between some of the four adjacent luminescent pixels. The sizes of the sound-transmitting holes can be exactly the same, or Not quite the same.

It should be understood that the multiple planar modules produced based on the calculated data can definitely be spliced into an approximately spherical display screen. However, during the actual splicing operation, if the spherical frame corresponding to the entire display screen is not planned in advance, , the splicing will fail due to the uncertainty of the angle between adjacent plane modules. Therefore, if the spherical frame corresponding to the display screen has been designed and produced in advance (either internal or external spherical frame can be used, the spherical frame provides the spherical surface where the planar module is located), then it can be spliced directly against the spherical surface provided by the spherical frame. If If the spherical frame is not pre-designed, the angle between adjacent planar modules needs to be calculated.

Therefore, in one embodiment of the present invention, the design method of a display screen spliced along a spherical surface may also include the following steps: calculate the upper and lower included angles of adjacent plane modules in the same row according to the horizontal dividing angle; Calculate the length of the hypotenuse of each plane module based on the length and height of the upper and lower sides of the module, and calculate the angle between the luminous surfaces of adjacent plane modules in the same row based on the horizontal dividing angle, the length and height of the hypotenuse of each plane module; according to the diameter of the sphere Calculate the angle between the luminous surfaces of adjacent plane modules in the same row and the height of each plane module, so that the angle between the upper and lower sides of adjacent plane modules in the same row, the angle between the luminous surfaces of adjacent plane modules in the same row, and the same Multiple plane modules are spliced and combined according to the angle between the light-emitting surfaces of adjacent plane modules.

Specifically, as shown in Figure 7, from the property of spatial parallelism, it can be seen that the upper angle (or lower angle) α _L of adjacent plane modules in the same row is transitive. In the quadrilateral OABC, ∠OAB=∠OCB=90° , so the upper and lower angles of adjacent plane modules in the same row are:

α _L =180°-θ

As shown in Figure 8, the light-emitting surfaces of adjacent planar modules in the same row intersect at AD, and AD vertical lines CF and BF are drawn respectively. Therefore, the angle between the light-emitting surfaces of adjacent planar modules in the same row is α _P = ∠CFB. It is easy to prove that △CFA and △DEA are similar and therefore have a proportional relationship.

Therefore

According to the cosine theorem, in △ABC:

Therefore in △CFB:

From this, we can get the angle between the luminous surfaces of adjacent planar modules in the same row:

As shown in Figure 9, according to the cosine theorem, in △OAB

Therefore, the angle between the light-emitting surfaces of adjacent planar modules in the same row is:

After the above angles are calculated, adjacent plane modules can be spliced without a frame, thereby completing the splicing of the entire display screen.

It should be understood that the closer to the pole, the smaller the area of the planar module. Planar modules that are too small are not easy to produce and splice and install, which will increase the production cost of the display screen. Therefore, in one embodiment of the present invention, in the nth row, each i planar module can be combined into an i-in-one module, and the i-in-one module is designed and manufactured as a whole, where i is a divisor of q , 1<n≤p, n is a value close to p, for example, n is p-x to p, and the specific value of x can be set according to the actual situation. The design method of the display screen spliced along the spherical surface can also include: calculating the number of i-in-one modules in each row according to the number of plane module columns q; calculating the number of i-in-one modules in each row according to the upper side length and horizontal dividing angle of each plane module in the n-1th row. The lower side length of each i-in-one module in the nth row; calculate the upper side length of each i-in-one module in the nth row according to the upper side length and horizontal dividing angle of each plane module in the nth row; calculate the upper side length of each i-in-one module in the nth row; Calculate the height of each i-in-one module in the n-th row based on the length of the upper and lower sides of each i-in-one module and the hypotenuse length of each flat module in the n-th row; based on the length of the bottom side of each i-in-one module in the n-th row , the horizontal division angle is used to calculate the size of the patchwork produced by each i-in-one module in the nth row.

In one embodiment of the present invention, the number of i-in-one modules in each row is q/i. As shown in Figure 10, ABCD is a 2-in-1 module. The 2-in-1 module is arranged in the nth row (i=2). In △BFC, L' _bn = BC, so the 2-in-1 module in the nth row The length of the lower side is:

In △AHD, L' _an =AD, so the upper side length of the nth row 2-in-1 module is:

In △DIC, H' ₂ =ID, according to the Pythagorean theorem, the height of the 2-in-1 module in the nth row:

The triangular patchwork △BFC generated by 2-in-1 in the nth row, the patchwork height:

Preferably, i= ^2k and k is a positive integer. When i= ^2k , the patchwork is an isosceles triangle or a shape formed by a combination of multiple isosceles triangles, which facilitates calculation of the patchwork size.

Extended to the arrangement of i-in-one modules (i= ^2k ) in the nth row, according to similar triangles, the length of the lower side of each i-in-one module in the nth row is:

The upper side length of each i-in-one module in the nth row is:

The height of each i-in-one module in row n is:

The height of the triangular patchwork generated by the i-in-one module in row n is:

In order to ensure the visual effect, the seam height should not be too large. In one embodiment of the present invention, the seam height P _n is required to be ≤0.1P. If the seam height requirement cannot be met, the horizontal dividing angle and the value of k need to be reset, and a display screen with a seam height that meets the requirement is redesigned according to the above steps of the embodiment of the present invention.

In addition, in one embodiment of the present invention, the design method of the display screen spliced along the spherical surface may also include: based on the number of sound-transmitting holes actually opened on each plane module, the aperture of each sound-transmitting hole actually opened, The length of the upper side of each plane module and the height of each plane module are used to calculate the sound transmittance of each plane module.

Further, the design method of the display screen spliced along the spherical surface may also include: based on the optimal spacing between adjacent luminous pixels on the display screen, the angle between the luminous surfaces of adjacent planar modules in the same row, and the luminous surfaces of adjacent planar modules in the same column. The included angle calculates the actual spacing between adjacent luminescent pixels between adjacent planar modules; calculates the spacing error rate based on the optimal spacing between adjacent luminescent pixels on the display screen and the actual spacing between adjacent luminescent pixels between adjacent planar modules; determines the transparency Whether the sound rate and/or spacing error rate meet the preset conditions, if not, redesign the display screen.

As shown in Figure 11, the two side lengths of a rectangular luminous pixel are a ₁ and a ₂ respectively. The forbidden wiring distance, that is, the distance that cannot be opened due to wiring is m. Then according to the Pythagorean theorem, it can be obtained that the planar module can The maximum diameter of the sound-transmitting hole is:

The sound transmittance ξ of the planar module can be regarded as the perforation rate of the planar module. The number of rows of luminous pixels on each planar module is b, then the maximum number of sound transmission holes that can be opened on each planar module is:

As shown in Figure 12, the sound transmittance of the plane module is approximated by the rectangle contained in the plane module. The sound transmittance of each plane module is:

Among them, s _max is the maximum aperture of the sound-transmitting hole that can be opened on the plane module, a ₁ and a ₂ are the two side lengths of the rectangular luminous pixel, m is the prohibited wiring distance, q _mmax is the distance that can be opened on each plane module The maximum number of sound-transmitting holes, b is the number of rows of luminous pixels on each planar module, ξ is the sound transmission rate of each planar module, q _m is the actual number of sound-transmitting holes on each planar module, s _j is _the aperture _of the jth sound-transmitting hole actually opened on the plane module, where _{0≤qm≤qmmax} , 0< _sj≤smax .

It should be understood that if the maximum aperture of the sound-transmitting holes that can be opened on the planar module and the maximum number of sound-transmitting holes that can be opened on each planar module are substituted into the sound transmission rate calculated by the above sound transmission rate calculation formula, That is, if the maximum sound transmittance is still lower than the lower limit of sound transmittance, the display screen needs to be redesigned.

As shown in Figure 13, taking the point spacing of adjacent planar modules as the optimal spacing P as an example, due to the angle between modules, the actual point spacing P'<P, according to the cosine theorem, between adjacent planar modules in the same row The actual spacing between adjacent luminous pixels is:

The actual spacing between adjacent luminous pixels between adjacent planar modules in the same column is:

The spacing error rate can be calculated according to the following formula:

Among them, P′ _α is the actual spacing between adjacent luminescent pixels between adjacent planar modules in the same row, P′ _β is the actual spacing between adjacent luminescent pixels between adjacent planar modules in the same column, η is the spacing error rate, P′ is taken as P′ _α or P′ _β .

In one embodiment of the present invention, when eta > 0.05, the point spacing between adjacent planar modules is too small, and there will be an obvious "prismatic feeling" when viewed. Therefore, eta can be controlled to ≤ 0.05, otherwise the display needs to be redesigned. Screen.

According to the design method of a display screen spliced along a spherical surface according to an embodiment of the present invention, an approximately spherical display screen is formed by splicing flat modules without bending along a spherical surface. The processing technology is simple and the accuracy is easy to control. The display effect of the display screen can be improved, and through Designing the size, quantity and other data of flat modules can reduce the difficulty of making display screens and improve the production efficiency of display screens.

Based on the design method of the display screen spliced along the spherical surface in the above embodiment, the present invention also provides a display screen.

The display screen of the embodiment of the present invention is designed and manufactured by the design method of the display screen spliced along the spherical surface in any of the above embodiments. Specifically, the display screen is composed of multiple planar modules spliced along the spherical surface. The plurality of planar modules are spliced along the spherical surface. The meridional direction of the sphere is divided into the first to pth rows from the equator to one pole, and the sphere is divided into q columns along the latitude direction. Among them, the plane modules in the same row have the same shape and size, and the plane modules in the same column form a petal shape. Each plane module is provided with at least one light-emitting pixel, and p and q are both positive integers. Among them, the maximum height of the smallest unit of the plane module is:

_Hmax ＝ _Smax ·P

Among them, H _max is the maximum height of the smallest unit of the flat module, S _max is the maximum number of scans of the smallest unit of the flat module, T is the refresh cycle of the display screen, which is the reciprocal of the refresh rate of the display screen, and the unit can be milliseconds, for example When the refresh rate of the display screen is 60Hz, T can be 16.67ms, K _r is the grayscale constant of the chip in the control board of the light-emitting pixel, f _max is the highest refresh rate of the chip GCLK in the control board of the light-emitting pixel, N _s is the GCLK in each scan The number, N _t is the number of blanking time GCLK.

The height H of each plane module in the first to p-1th rows is an integer multiple of the maximum height H _max of the smallest unit of the plane module.

The length of the upper and lower sides of each plane module is:

Among them, L _an represents the upper side length of each plane module in the nth row, L _bn represents the lower side length of each plane module in the nth row, D is the diameter of the sphere, and θ is the horizontal dividing angle.

In each planar module, a sound-transmitting hole is opened between four adjacent luminous pixels. The maximum aperture of the sound-transmitting hole that can be opened on the planar module is:

Among them, s _max is the maximum aperture of the sound-transmitting hole that can be opened on the planar module, a ₁ and a ₂ are the two side lengths of the rectangular light-emitting pixel, and m is the prohibited wiring distance.

The maximum number of sound-transmitting holes that can be opened on each plane module is:

Among them, _qmmax is the maximum number of sound-transmitting holes that can be opened on each planar module, and b is the number of rows of luminescent pixels on each planar module.

For a more specific implementation of the display screen, reference may be made to the embodiment of the design method for a display screen spliced along a spherical surface, which will not be described again here.

The display screen according to the embodiment of the present invention has low manufacturing difficulty, high production efficiency and good display effect.

In the description of the present invention, 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 indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. "Plural" means two or more, unless otherwise expressly and specifically limited.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments, or portions of code that include one or more executable instructions for implementing the specified logical functions or steps of the process. , and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed out of the order shown or discussed, including in a substantially simultaneous manner or in the reverse order, depending on the functionality involved, which shall It should be understood by those skilled in the art to which embodiments of the present invention belong.

The logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered a sequenced list of executable instructions for implementing the logical functions, and may be embodied in any computer-readable medium, For use by, or in combination with, instruction execution systems, devices or devices (such as computer-based systems, systems including processors or other systems that can fetch instructions from and execute instructions from the instruction execution system, device or device) or equipment. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, and subsequently edited, interpreted, or otherwise suitable as necessary. process to obtain the program electronically and then store it in computer memory.

It should be understood that various parts of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented in hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a logic gate circuit with a logic gate circuit for implementing a logic function on a data signal. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

Those of ordinary skill in the art can understand that all or part of the steps involved in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The program can be stored in a computer-readable storage medium. When executed, one of the steps of the method embodiment or a combination thereof is included.

In addition, each functional unit in various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and should not be construed as limitations of the present invention. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present invention. The embodiments are subject to changes, modifications, substitutions and variations.

Claims (17)

1. A design method for a display screen spliced along a spherical surface, characterized in that the display screen is composed of a plurality of planar modules spliced together along a spherical surface, and the plurality of planar modules are along the meridian direction of the spherical surface from the equator to one pole. It is divided into first to pth rows and divided into q columns along the latitudinal direction of the spherical surface. The planar modules in the same row have the same shape and size, and the planar modules in the same column form a petal shape. Each of the planar modules has a At least one luminescent pixel is provided, p and q are both positive integers, and the method includes the following steps:

   Calculate the optimal spacing between adjacent luminescent pixels on the display screen based on the diameter of the spherical surface, the resolution of the display screen and the horizontal division angle of the display screen in the equatorial plane of the spherical surface;

   Calculate the height of each planar module according to the optimal spacing between adjacent luminescent pixels on the display screen and the characteristic parameters of the control board of the luminescent pixels;

   Calculate the vertical division angle according to the diameter of the spherical surface and the height of each of the planar modules, and calculate the number p of planar module rows from the equator of the spherical surface to one pole according to the vertical division angle;

   Calculate the number of plane module columns q according to the horizontal field of view angle of the display screen and the horizontal division angle;

   Calculate the upper and lower side lengths of each of the plane modules according to the diameter of the spherical surface and the vertical dividing angle;

   Calculate the maximum aperture of the sound-transmitting holes that can be opened on the planar module based on the optimal spacing between adjacent luminescent pixels on the display screen, the size of the luminescent pixels, and the prohibited wiring distance;

   Calculate the size of the sound-transmitting holes that can be opened on each of the planar modules based on the characteristic parameters of the control panel of the luminescent pixels, the upper side length of each planar module, and the optimal spacing between adjacent luminescent pixels on the display screen. greatest amount;

   Based on the calculated row number p of the plane module, the number of columns q of the plane module, the length and height of the upper and lower sides of each plane module, the maximum aperture of the sound-transmitting hole that can be opened on the plane module, and the The plurality of planar modules are made according to the maximum number of sound-transmitting holes that can be opened on the planar module, so that the plurality of planar modules are spliced and combined to form the display screen.
2. The method for designing a display screen spliced along a spherical surface according to claim 1, further comprising:

   Calculate the upper and lower included angles of adjacent plane modules in the same row according to the horizontal dividing angle;

   Calculate the length of the hypotenuse of each flat module based on the length and height of the upper and lower sides of each flat module, and calculate the length of the hypotenuse of each flat module adjacent to the same row based on the horizontal dividing angle, the length and height of the hypotenuse of each flat module The angle between the light-emitting surfaces of the flat module;

   Calculate the angle between the light-emitting surfaces of adjacent plane modules in the same row according to the diameter of the spherical surface and the height of each of the plane modules, so as to calculate the angle between the upper and lower sides of adjacent plane modules in the same row, and the angle between adjacent planes in the same row. The angles between the light-emitting surfaces of the modules and the angles between the light-emitting surfaces of adjacent planar modules in the same row are used to splice and combine the plurality of planar modules.
3. The design method of a display screen spliced along a spherical surface according to claim 2, characterized in that in the nth row, each i plane module is merged into an i-in-one module, and the i-in-one module is designed as a whole and production, where i= ^2k , 1<n≤p, k is a positive integer, and the method also includes:

   Calculate the number of i-in-one modules in each row according to the number of plane module columns q;

   Calculate the lower side length of each i-in-one module in the n-th row according to the upper side length and the horizontal dividing angle of each of the plane modules in the n-1th row;

   Calculate the upper side length of each of the i-in-one modules in the n-th row according to the upper side length of each of the plane modules in the n-th row and the horizontal dividing angle;

   Calculate the height of each i-in-one module in the n-th row based on the length of the upper and lower sides of each of the i-in-one modules in the n-th row and the hypotenuse length of each of the planar modules in the n-th row;

   The size of the patchwork produced by each i-in-one module in the n-th row is calculated based on the lower side length and the horizontal dividing angle of each i-in-one module in the n-th row.
4. The method for designing a display screen spliced along a spherical surface according to claim 2 or 3, further comprising:

   According to the number of sound-transmitting holes actually opened on each planar module, the aperture of each sound-transmitting hole actually opened, the length of the upper side of each planar module, and the height of each planar module. Calculate the sound transmittance of each of the planar modules.
5. The method for designing a display screen spliced along a spherical surface according to claim 4, further comprising:

   Calculate the distance between adjacent luminescent pixels between adjacent planar modules based on the optimal spacing between adjacent luminescent pixels on the display screen, the angle between the luminous surfaces of adjacent planar modules in the same row, and the angle between the luminescent surfaces of adjacent planar modules in the same column. actual spacing;

   The spacing error rate is calculated based on the optimal spacing between adjacent luminescent pixels on the display screen and the actual spacing between adjacent luminescent pixels between adjacent planar modules.
6. The design method of a display screen spliced along a spherical surface according to claim 5, further comprising:

   It is determined whether the sound transmittance and/or the spacing error rate meet the preset conditions, and if not, the display screen is redesigned.
7. The design method of a display screen spliced along a spherical surface according to claim 6, characterized in that the optimal spacing between adjacent luminescent pixels on the display screen is calculated according to the following formula:

   

   Wherein, P is the optimal spacing between adjacent luminous pixels on the display screen, c is the sum of the chord lengths of the display screen within the equatorial circumference of the spherical surface,

   

   D is the diameter of the spherical surface, θ is the horizontal dividing angle, and N is the resolution.
8. The design method of a display screen spliced along a spherical surface according to claim 7, characterized in that the maximum height of the smallest unit of the planar module is:

   _Hmax ＝ _Smax ·P

   

   Wherein, H _max is the maximum height of the smallest unit of the flat module, S _max is the maximum scanning number of the smallest unit of the flat module, T is the refresh cycle of the display screen, and K _r is the control of the light-emitting pixels. The grayscale constant of the chip in the board, f _max is the highest refresh rate of GCLK of the chip in the control board of the light-emitting pixel, N _s is the number of GCLKs in each scan, N _t is the number of GCLKs in the blanking time,

   The height H of each planar module in the first to p-1th rows is an integer multiple of the maximum height H _max of the smallest unit of the planar module.
9. The design method of a display screen spliced along a spherical surface according to claim 8, characterized in that the vertical division angle is calculated according to the following formula:

   

   And r∈(0,90°)

   When the display screen includes two parts from the equator to the two poles of the spherical surface, the number p of the plane module rows is calculated according to the following formula:

   

   When the display screen includes a portion from the equator of the sphere to any pole, the number p of the plane module rows is calculated according to the following formula:

   

   Where, γ is the vertical dividing angle.
10. The design method of a display screen spliced along a spherical surface according to claim 9, characterized in that the number of plane module columns q is calculated according to the following formula:

    

    Where, V is the horizontal field of view angle of the display screen.
11. The design method of a display screen spliced along a spherical surface according to claim 9, characterized in that the upper and lower side lengths of each of the planar modules are calculated according to the following formula:

    

    Among them, L _an represents the upper side length of each plane module in the nth row, L _bn represents the lower side length of each plane module in the nth row, D is the diameter of the spherical surface, and θ is the horizontal division. horn.
12. The design method of a display screen spliced along a spherical surface according to claim 11, characterized in that the hypotenuse length of each of the planar modules is calculated according to the following formula:

    

    Where, _Bn represents the hypotenuse length of each planar module in the nth row.
13. The design method of a display screen spliced along a spherical surface according to claim 12, characterized in that the lower side length of each i-in-one module in the nth row is calculated according to the following formula:

    

    Calculate the upper side length of each i-in-one module in the nth row according to the following formula:

    

    Calculate the height of each i-in-one module in the nth row according to the following formula:

    
14. The design method of a display screen spliced along a spherical surface according to claim 13, characterized in that the upper and lower included angles of adjacent plane modules in the same row are calculated according to the following formula:

    α _L =180°-θ

    Calculate the angle between the luminous surfaces of adjacent planar modules in the same row according to the following formula:

    

    Calculate the angle between the luminous surfaces of adjacent planar modules in the same row according to the following formula:

    

    Among them, α _L represents the angle between the upper and lower sides of adjacent plane modules in the same row, α _P represents the angle between the luminous surfaces of adjacent plane modules in the same row, and β _P represents the angle between the luminous surfaces of adjacent plane modules in the same column.
15. The design method of a display screen spliced along a spherical surface according to claim 14, characterized in that in each of the planar modules, the sound-transmitting holes are opened between four adjacent luminous pixels, according to the following formula Calculate the maximum aperture of the sound-transmitting hole that can be opened on the plane module:

    

    Calculate the maximum number of sound-transmitting holes that can be opened on each plane module according to the following formula:

    

    Calculate the sound transmittance of each of the planar modules according to the following formula:

    

    Among them, s _max is the maximum aperture of the sound-transmitting hole that can be opened on the planar module, a ₁ and a ₂ are the two side lengths of the rectangular light-emitting pixel, m is the prohibited wiring distance, q _mmax is the length of each The maximum number of sound-transmitting holes that can be opened on the planar module, b is the number of rows of luminous pixels on each planar module, ξ is the sound transmittance of each planar module, q _m is the sound transmission rate of each planar module The number of sound-transmitting holes actually opened on the module, s _j is the diameter of the j-th sound-transmitting hole actually opened on the planar module, where 0≤q _m ≤q _mmax , 0<s _j ≤s _max .
16. The design method of a display screen spliced along a spherical surface according to claim 15, characterized in that the actual spacing between adjacent luminous pixels between adjacent planar modules in the same row is calculated according to the following formula:

    

    Calculate the actual spacing between adjacent luminous pixels between adjacent planar modules in the same column according to the following formula:

    

    The spacing error rate is calculated according to the following formula:

    

    Among them, P′ _α is the actual spacing between adjacent luminescent pixels between adjacent planar modules in the same row, P′ _β is the actual spacing between adjacent luminescent pixels between adjacent planar modules in the same column, and η is the spacing error. rate, P′ takes P′ _α or P′ _β .
17. A display screen designed and manufactured according to the design method according to any one of claims 1 to 16, characterized in that the display screen is composed of a plurality of planar modules spliced together along a spherical surface, and the plurality of planar modules are assembled together along a spherical surface. The modules are divided into first to p-th rows along the meridional direction of the sphere from the equator to one pole, and into q columns along the latitudinal direction of the sphere. The planar modules in the same row have the same shape and size, and the planar modules in the same column have the same shape and size. The plane modules form a petal shape, and each plane module is provided with at least one light-emitting pixel, p and q are both positive integers, where,

    The maximum height of the smallest unit of the planar module is:

    _Hmax ＝ _Smax ·P

    

    Wherein, H _max is the maximum height of the smallest unit of the flat module, S _max is the maximum scanning number of the smallest unit of the flat module, T is the refresh cycle of the display screen, and K _r is the control of the light-emitting pixels. The grayscale constant of the chip in the board, f _max is the highest refresh rate of GCLK of the chip in the control board of the light-emitting pixel, N _s is the number of GCLKs in each scan, N _t is the number of GCLKs in the blanking time,

    The height H of each planar module in the first to p-1th rows is an integer multiple of the maximum height H _max of the smallest unit of the planar module,

    The length of the upper and lower sides of each planar module is:

    

    Among them, L _an represents the upper side length of each plane module in the nth row, L _bn represents the lower side length of each plane module in the nth row, D is the diameter of the spherical surface, and θ is the horizontal division. horn,

    In each of the planar modules, the sound-transmitting holes are opened between four adjacent luminous pixels. The maximum aperture of the sound-transmitting holes that can be opened on the planar module is:

    

    Among them, s _max is the maximum aperture of the sound-transmitting hole that can be opened on the planar module, a ₁ and a ₂ are the two side lengths of the rectangular light-emitting pixel, m is the prohibited wiring distance,

    The maximum number of sound-transmitting holes that can be opened on each planar module is:

    

    Where, _qmmax is the maximum number of sound-transmitting holes that can be opened on each planar module, and b is the number of rows of light-emitting pixels on each planar module.

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