WO2016054958A1 - 一种尖角过渡模组及应用其的led显示屏 - Google Patents

一种尖角过渡模组及应用其的led显示屏 Download PDF

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Publication number
WO2016054958A1
WO2016054958A1 PCT/CN2015/089013 CN2015089013W WO2016054958A1 WO 2016054958 A1 WO2016054958 A1 WO 2016054958A1 CN 2015089013 W CN2015089013 W CN 2015089013W WO 2016054958 A1 WO2016054958 A1 WO 2016054958A1
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led
module
arc
sharp corner
angle
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PCT/CN2015/089013
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English (en)
French (fr)
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邝野
李鸥
陆怡秋
焦伟棋
钟涛
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深圳市大族元亨光电股份有限公司
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Priority to US14/906,895 priority Critical patent/US10292294B2/en
Publication of WO2016054958A1 publication Critical patent/WO2016054958A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • 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
    • G09F9/33—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 semiconductor devices, e.g. diodes
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09018—Rigid curved substrate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display

Definitions

  • the invention relates to LED display technology, in particular to a sharp angle transition module and an LED display screen using the same.
  • LED display screen is a display device that works by LED light-emitting array illumination.
  • LED display screen has obvious advantages such as high brightness, low operating voltage, low power consumption, large size, long life, impact resistance and stable performance. Many fields have been widely used.
  • the LED display screen is generally a flat rectangular or flat square structure, which is formed by splicing a plurality of LED display modules.
  • Each display module is mainly composed of a box body, a display module disposed on the surface of the box body, and a display control circuit disposed inside the box body.
  • the LED lighting array is disposed on the display module.
  • the prior art LED display modules are all planar structures.
  • the object of the present invention is to provide a sharp-angle transition module and an LED display screen using the same, which can overcome the defects of the existing LED display docking, and achieve seamless connection of the display screen in the sharp corner transition region to remove A black line that appears in the image display.
  • a sharp-angle transition module comprising a module bottom case, an LED PCB board, and a curved mask, wherein the LED PCB board is located in a space formed by the module bottom shell and the curved mask;
  • the module bottom case is disposed at the LED mounting point, and the curved mask is provided with a hole adapted to the LED on the LED PCB board.
  • the above-mentioned module bottom case is formed into a fan-shaped ring having a cross section, an open end on one side, and one side on one side. At the closed end, the curved mask is located at an open end of the module bottom case.
  • L>20N is a positive integer
  • N is the number of LED dots arranged horizontally in the LED PCB board 2
  • d is the dot pitch
  • h is the thickness of the module bottom shell
  • B is the intersection angle of the two plane screens
  • L For the arc length of the LED lamp surface
  • R is the arc radius of the module bottom case
  • A is the arc center angle of the module bottom case
  • D is the bottom width of the module bottom case
  • the D value is determined by the LED PCB board The external dimensions and the size of the inlet and outlet holes are determined, and a fixed value can be determined according to the specific situation.
  • the distance between the LED dot pixel on the LED PCB board and the pixel adjacent to the side display screen, and the pixel dot pixel pitch on the LED PCB board itself should also be displayed on the side edge.
  • the screen spacing is the same or approximately the same.
  • the intersection point of the oblique extension line (near-heart direction) of the two ends of the module bottom shell is taken as the center, and then the vertex d1, d2 of the curved mask of any side is drawn, and the arc line is drawn, and the arc is drawn The highest point is d4.
  • An LED display screen comprising the sharp corner transition module of any one of claims 1 to 5.
  • An LED display screen comprising two sharp-angle transition modules according to any one of claims 1 to 5; each of the sharp-angle transition modules is horizontally arranged with N dot pixels:
  • the intersection angle of the two planes is B, and in addition, for the sharp corner transition of the LED display screen, the lamp surface
  • the arc length is L
  • the arc radius is R
  • the arc center angle is A
  • D is the bottom width of the module bottom shell.
  • the sharp corner transition module of the present invention solves the problem of no black line defect generated at the sharp corner when the overall display screen is docked by two flat display screen corners.
  • the display effect of the non-flat display is seamlessly connected, no display is displayed, and the full screen displays the perfect effect without black line defects, which satisfies the requirements for high-performance display of the display.
  • Figure 1 is a conventional display structure 1
  • FIG. 3 is a perspective exploded view of the sharp corner transition module of the present invention.
  • FIG. 4 is a perspective assembled view of a sharp corner transition module of the present invention.
  • Figure 5 is a front elevational view of Figure 4.
  • Figure 6 is a side view of Figure 4.
  • Figure 7 is a rear elevational view of Figure 4.
  • Figure 8 is a plan view of Figure 4.
  • FIG. 9 is a schematic structural view of a module bottom case and an adjacent display screen
  • Figure 10 is a schematic diagram of the design of the curved mask
  • Figure 11 is a schematic diagram of the design of the curved mask
  • FIG. 12 is a schematic plan view of a display screen using a sharp corner transition module
  • Figure 13 is a perspective view of a display screen using a sharp corner transition module
  • FIG. 14 is a schematic structural view of a second embodiment of a display screen
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the present invention discloses a sharp-angle transition module including a module bottom case 1.
  • LED PCB board 2 curved mask 3, where:
  • the module bottom case 1 is formed into a fan-shaped ring having a cross section, an open end on one side and a closed end on one side; and an LED mounting point 11 is disposed in the bottom case 1 of the module.
  • the LED dot pitch should be consistent or approximately uniform. That is, the distance between the LED dot pixel on the LED PCB board 2 and the pixel adjacent to the side display screen, and the LED dot pixel pitch on the LED PCB board 2 itself should also be the same or approximately the same as the side display dot pitch.
  • the bottom case 1 of the module is a key piece, and its structural shape, that is, the angle of its fan-shaped structure, must ensure that the arrangement of the LED modules is consistent with the display modules on both sides.
  • Condition L>20N is a positive integer.
  • LED PCB board 2 horizontally arranged LED point pixel number N, dot spacing d, module bottom shell 1 thickness h, sharp corner transition module bottom shell 1 bottom width D, D value can be based on
  • the size of the LED PCB and the size of the bottom entry and exit hole are determined by a fixed value.
  • the intersection angle of the two planes is B.
  • the surface of the LED is a small arc surface with an arc length of L and a radius of the arc. R, the arc angle is A.
  • the curved mask 3 is provided with a hole corresponding to the LED lamp on the LED PCB board 2, and the LED PCB board 2 is located in the space formed by the curved mask 3 and the module bottom case 1. Inside, that is, it is located at the open end of the module bottom case 1; the curvature of the curved mask 3 is adapted to the open end of the module bottom case 1.
  • the arc shape R is the arc of the curved mask 3 to make the subsequent structural design of the curved mask 3.
  • the height H of the vertex d4 is calculated as follows:
  • D5 in Fig. 10 is the light-emitting point of the LED light, see the specifications of each LED lamp manufacturer.
  • the height of the resulting vertex d4 is calculated using this disclosure.
  • the heights of any points on the arc line R are equal.
  • the highest point d4 of the curved mask 3 is lower than the light-emitting point d5 of the LED, so the LED light 2 is in the range of 120 degrees, and the light is unobstructed, forming a good match with the left and right planar modules.
  • Light (Note: At present, the left and right viewing angles of the LED display light in the display screen are mostly 120 degrees).
  • the sharp angle transition module of the invention solves the problem of no black line defect generated at the sharp corner when the overall display screen is docked by the two flat display screen corners.
  • the display effect of the non-flat display is seamlessly connected, no display is displayed, and the full screen displays the perfect effect without black line defects, which satisfies the requirements for high-performance display of the display.
  • the module bottom case 1 is a component that supports the opening and lowering, and the sharp corner transition module formed by the LED PCB board 2 and the curved mask 3 is mounted thereon, and the lower part is connected with the fixed board, and is mounted on the fixed board, and the bottom of the module Shell 1 is equipped with LED PCB board 2 for angled bevel treatment.
  • the present invention also provides an LED display screen to which the sharp corner transition module G is applied.
  • the arc of the curved mask 3 is approximately tangent to the flat display modules E and F on both sides, and the arc transition is rounded, which is beneficial to the LED light and the flat display mode of the sharp corner transition module G.
  • the group of LED lights form a good light distribution, and the appearance of the arc treatment is extremely suitable for people's aesthetics, which is different from the conventional display module mask in the industry.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the angle size directly affects the docking effect. Different angles, adopting the corner transition module docking scheme is not Similarly, for the small angle design, the two sharp-angle transition modules are docked, and the large angle is designed to be connected by one sharp-angle transition module.
  • each sharp corner transition module is horizontally arranged with N dot pixels.
  • the intersection angle of the two planes is B.
  • the lamp surface is a small arc surface
  • the arc length is L
  • the arc radius is R
  • the arc center angle is A
  • D is the bottom of the module.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种尖角过渡模组，包括模组底壳（1）、LED PCB板（2）和弧形面罩（3）。LED PCB板（2）位于模组底壳（1）与弧形面罩（3）所形成的空间内。模组底壳（1）内设于LED安装点（11）。弧形面罩（3）上设有与LED PCB板（2）上的LED相适应的孔。该尖角过渡模组解决了整体显示屏由两个平面显示屏尖角对接时，在尖角处产生的无显示黑线缺陷问题。使非平面显示屏实现了无缝对接，无显示空档，全屏显示无黑线缺陷。

Description

一种尖角过渡模组及应用其的LED显示屏 技术领域
本发明涉及LED显示技术，具体地讲，是指一种尖角过渡模组及应用其的LED显示屏。
背景技术
LED显示屏是通过LED发光阵列发光来工作的显示装置，LED显示屏发光具有亮度高、工作电压低、功耗小、大型化、寿命长、耐冲击和性能稳定等明显优点，因而使其在很多领域得到了广泛应用。
LED显示屏一般为平面长方形或平面正方形结构，由若干LED显示模组拼接而成，每个显示模组主要由箱体、设置在箱体表面的显示模块、设置在箱体内部的显示控制电路构成，LED发光阵列设置在所述显示模块上。现有技术的LED显示模组均为平面结构。
随着LED技术的迅猛发展，LED应用领域越来越广，在LED显示屏领域，市场需求越来越多样化，对显示屏的要求也越来越高。参考图1、2所示，当两个平面结构的显示屏E、F形成角度对接时，按传统的显示屏制作工艺，尖角对接处自然形成空挡，即具有转角缝隙，显示屏无法做到无缝连续对接。图像显示会出现一条无显示的黑线缺陷。
发明内容
本发明的目的在于提供一种尖角过渡模组及应用其的LED显示屏，其可克服现有的LED显示屏对接时的缺陷，使显示屏在尖角过渡区域达到无缝连接，以去除在图像显示中出现的黑线。
一种尖角过渡模组，其包括模组底壳、LED PCB板、弧形面罩，所述的LED PCB板位于所述的模组底壳与弧形面罩所形成的空间内；所述的模组底壳内设于LED安装点，所述的弧形面罩上设有与LED PCB板上的LED相适应的孔。
上述的模组底壳，其成形为横截面为类扇形环，一侧为开放端，一侧为 封闭端，所述的弧形面罩位于所述的模组底壳的开放端。
上述的尖角过渡模组，当两平面屏相交时，其相交角度在90°～180°，则所述的模组底壳的参数用下列公式得到：
A＝180-B   (1)
[R-h/cos(A/2)]*sin(A/2)＝D/2   (2)
A＝N*Arc sin(d/2R)   (3)
其中：L>20N是正整数，N为所述的LED PCB板2横向排列LED点像素数量，d为点间距，h为所述的模组底壳的厚度，B为两平面屏相交角度，L为LED灯面的弧长，R为所述模组底壳的圆弧半径，A为所述模组底壳的弧心角，D为模组底壳底部宽度，D值由LED PCB板的外形尺寸及进出线孔的尺寸决定，根据具体情况可以确定一个定值。
上述的尖角过渡模组，其LED PCB板上的LED点像素与侧边显示屏相邻点象素的间距，以及所述的LED PCB板自身上的LED点像素间距也应与侧边显示屏点间距相同或近似相同。
上述的弧形面罩的顶点的高度采用下列公式计算：
H＝d4-0.3～0.5
其中：以所述的模组底壳的两端斜边延长线(近心方向)的交点为圆心，再取任意侧边的弧形面罩的顶点d1，d2，画圆弧线，圆弧的最高点d4。
一种LED显示屏，其包括有一个权利要求1～5任一所述的尖角过渡模组。
一种LED显示屏，其包括有两个权利要求1～5任一所述的尖角过渡模组；每个尖角过渡模组水平排列N个点像素：
A＝(180-B)/2
R/(R-h)＝Nd/D
N(R-h)*sin(A/2)＝DR
其中，两平面相交角度为B，另外，对于LED显示屏的尖角过渡，灯面 为小圆弧面，弧长为L，圆弧半径为R，弧心角为A，D为模组底壳底部宽度。
采用上述的技术方案后，本发明尖角过渡模组，解决了整体显示屏由两个平面显示屏尖角对接时，在尖角处产生的无显示黑线缺陷问题。使非平面显示屏的显示效果达到了无缝对接，无显示空档，全屏显示无黑线缺陷的完美效果，满足了对显示屏高性能显示的要求。
附图说明
图1为现有的显示屏结构一；
图2为现有的显示屏结构二；
图3为本发明尖角过渡模组的立体分解示意图；
图4为本发明尖角过渡模组的立体组合示意图；
图5为图4的正视图；
图6为图4的侧视图；
图7为图4的后视图；
图8为图4的俯视图；
图9为模组底壳与相邻显示屏的结构示意图；
图10为弧形面罩的设计原理图一；
图11为弧形面罩的设计原理图二；
图12为应用尖角过渡模组的显示屏平面示意图；
图13为应用尖角过渡模组的显示屏立体示意图；
图14为显示屏实施例二的结构示意图；
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例一：
参考图3～8所示，本发明公开了一种尖角过渡模组，其包括模组底壳1、 LED PCB板2、弧形面罩3，其中：
模组底壳1，其成形为横截面为类扇形环，一侧为开放端，一侧为封闭端的壳体；模组底壳1内设有LED安装点11。
由于考虑到两相交的平面显示屏无缝对接的需要，LED点像素间距应保持一致或近似一致。即，LED PCB板2上的LED点像素与侧边显示屏相邻点象素的间距，以及LED PCB板2自身上的LED点像素间距也应与侧边显示屏点间距相同或近似相同。
而如何保证显示屏无缝对接，模组底壳1是关键件，其结构形状，即其扇形结构的角度必须保证LED模组排列与两侧的显示屏模组保持一致。
参考图9所示，按相邻显示屏外观形式，当两平面屏相交时，其相交角度在90°～180°，则：
A＝180-B   (1)
[R-h/cos(A/2)]*sin(A/2)＝D/2   (2)
A＝N*Arc sin(d/2R)   (3)
条件L>20N是正整数。
其中：LED PCB板2横向排列LED点像素数量为N，点间距d，模组底壳1的厚度为h，尖角过渡模组的模组底壳1的底部宽度为D，D值可依据LED PCB尺寸和底部进出线孔的尺寸确定一个定值，两平面相交角度为B，另外，对于LED显示屏的尖角过渡，灯面为小圆弧面，弧长为L，圆弧半径为R，弧心角为A。
在实际的预测算中，其可以预设N值，以此来确定底壳的尺寸。在N值许可的范围内，会有多解，但符合设计要求的只有一个最佳解，可以解出L，R，A。
参考图3及图10所示，弧形面罩3，其上设有与LED PCB板2上的LED灯相对应的孔，LED PCB板2位于弧形面罩3与模组底壳1形成的空间内，即其位于模组底壳1的开放端；弧形面罩3的弧度与模组底壳1的开放端相适应。
以模组底壳1的两端斜边延长线(近心方向)的交点为圆心，再取任意侧边弧形面罩3的顶点d1，d2，画圆弧线。圆弧的最高点d4，再往中心方向移动0.3-0.5mm。以此圆弧形R为弧形面罩3的轮郭线做弧形面罩3后续的结构设计。顶点d4的高度H计算公式为以下：
H＝d4‐0.3～0.5
图10上的d5是LED光的发光点，见各LED灯厂商的规格书。
利用该公开计算所得的顶点d4的高度。
参考图11所示，在圆弧半径R固定的情况下，视圆弧线R上的任意点高度均相等。在设计时，弧形面罩3的最高点d4，使其低于LED的灯的发光点d5，所以LED灯2在120度发光范围内，光线均无遮挡，与左右两平面模组形成良好配光(备注：目前显示屏LED直插灯的左右视角绝大部份为120度)。
本发明尖角过渡模组，解决了整体显示屏由两个平面显示屏尖角对接时，在尖角处产生的无显示黑线缺陷问题。使非平面显示屏的显示效果达到了无缝对接，无显示空档，全屏显示无黑线缺陷的完美效果，满足了对显示屏高性能显示的要求。
在使用时，模组底壳1是承上启下的部件，其上安装LED PCB板2和弧形面罩3构成的尖角过渡模组，其下与固定板连接，安装在固定板上，模组底壳1装LED PCB板2处做带角度斜面处理。
另外，参考图12、13所示，本发明还提供了一种应用该尖角过渡模组G的LED显示屏。从中可以看出，弧形面罩3的弧线与两侧的平面显示屏模组E、F近似相切，弧线过渡圆润，有利于尖角过渡模组G的LED的灯与平面显示屏模组LED灯形成良好的配光，且外观做圆弧处理极大的符合人的审美，有别于业内常规显示屏模组面罩呈平面形状。
实施例二：
角度大小直接影响对接效果。角度不同，采取尖角过渡模组对接方案不 同，对于小角度设计两个尖角过渡模组对接，大角度则设计1个尖角过渡模组对接。
如图14所示，对于插件式LED显示屏，当转角角度<135°，尖角过渡模组需要设置2个，每个尖角过渡模组水平排列N个点像素。
A＝(180-B)/2
R/(R-h)＝Nd/D    (5)
N(R-h)*sin(A/2)＝DR    (6)
其中，两平面相交角度为B，另外，对于LED显示屏的尖角过渡，灯面为小圆弧面，弧长为L，圆弧半径为R，弧心角为A，D为模组底壳底部宽度。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (7)

  1. 一种尖角过渡模组，其特征在于：其包括模组底壳、LED PCB板、弧形面罩，所述的LED PCB板位于所述的模组底壳与弧形面罩所形成的空间内；所述的模组底壳内设于LED安装点，所述的弧形面罩上设有与LED PCB板上的LED相适应的孔。
  2. 根据权利要求1所述的尖角过渡模组，其特征在于：所述的模组底壳，其成形为横截面为类扇形环，一侧为开放端，一侧为封闭端，所述的弧形面罩位于所述的模组底壳的开放端。
  3. 根据权利要求2所述的尖角过渡模组，其特征在于：当两平面屏相交时，其相交角度在90°～180°，则所述的模组底壳的参数用下列公式得到：
    A＝180-B   (1)
    [R-h/cos(A/2)]*sin(A/2)＝D/2   (2)
    A＝N*Arc sin(d/2R)   (3)
    其中：L>20N是正整数，N为所述的LED PCB板2横向排列LED点像素数量，d为点间距，h为所述的模组底壳的厚度，B为两平面屏相交角度，L为LED灯面的弧长，R为所述模组底壳的圆弧半径，A为所述模组底壳的弧心角，D为模组底壳底部宽度。
  4. 根据权利要求1、2或3所述的尖角过渡模组，其特征在于：所述的LED PCB板上的LED点像素与侧边显示屏相邻点象素的间距，以及所述的LED PCB板自身上的LED点像素间距也应与侧边显示屏点间距相同或近似相同。
  5. 根据权利要求1、2或3所述的尖角过渡模组，其特征在于：所述的弧形面罩的顶点的高度采用下列公式计算：
    H＝d4-0.3～0.5
    其中：以所述的模组底壳的两端斜边延长线(近心方向)的交点为圆心，再取任意侧边的弧形面罩的顶点d1，d2，画圆弧线，圆弧的最高点d4。
  6. 一种LED显示屏，其特征在于，其包括有一个权利要求1～5任一所述的尖角过渡模组。
  7. 一种LED显示屏，其特征在于，其包括有两个权利要求1～5任一所述 的尖角过渡模组；每个尖角过渡模组水平排列N个点像素：
    A＝(180-B)/2
    R/(R-h)＝Nd/D
    N(R-h)*sin(A/2)＝DR
    其中，两平面相交角度为B，另外，对于LED显示屏的尖角过渡，灯面为小圆弧面，弧长为L，圆弧半径为R，弧心角为A，D为模组底壳底部宽度。
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