WO2023284239A1 - 一种分光板 - Google Patents

一种分光板 Download PDF

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Publication number
WO2023284239A1
WO2023284239A1 PCT/CN2021/137677 CN2021137677W WO2023284239A1 WO 2023284239 A1 WO2023284239 A1 WO 2023284239A1 CN 2021137677 W CN2021137677 W CN 2021137677W WO 2023284239 A1 WO2023284239 A1 WO 2023284239A1
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WIPO (PCT)
Prior art keywords
light
triangular pyramid
beam splitter
splitting
plate
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PCT/CN2021/137677
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English (en)
French (fr)
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王钰鑫
林炳腾
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富盛光电（吴江）有限公司
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Publication of WO2023284239A1 publication Critical patent/WO2023284239A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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

Definitions

  • the invention relates to the field of LED lamps, in particular to a beam splitter.
  • the MINI LED beam splitter structure is a support structure for the diffusion of LED light sources. It uses a single LED lamp bead to design according to the spacing, and solders the lamp beads one by one to the hard board or soft board. A visually dark area is generated between the beads, which reduces the performance of the LED lamp, and the dark area needs to be diffused. With the continuous development of technology, people have higher and higher requirements for MINI LED beam splitters.
  • the traditional method uses many light guide components or optical films to disperse the light source, or increases the distance between the optical film and the LED, so that the light of the LED can be obtained.
  • a better light mixing space can further achieve the effect of uniform backlight images, but its disadvantage is that it will increase the thickness of the whole monitor mechanism and make it look cumbersome, which will bring certain adverse effects to people's use process.
  • the demand for backlight of MINI LED has been increasing day by day.
  • the problem of the bright and dark areas of the backlight of MINI LED has been bothering the research and development personnel of the backlight module, and constantly develops new diaphragms for more efficient optical mixing of the MINI LED light source. For this reason, it is urgent to develop a new type of spectroscopic plate to meet the market demand.
  • the present invention provides a kind of beam splitter, this beam splitter is arranged above the LED lamp bead, is mainly based on the design of a plurality of triangular pyramid structures to convert the plane point light source into a multi-light source or amplify the light source of the beam splitter design, to solve
  • the problem of bright and dark areas of LED lamp beads is solved, not only the structure is simple, but also the brightness can be optimized; the distance between the beam splitter and the light source can be adjusted as needed, which can effectively solve the application design under the condition of thickness limitation.
  • the present invention mainly adopts the following technical solutions:
  • a beam splitter the beam splitter is located above a light source, and includes a beam splitter structure, the beam splitter structure is located on the beam splitter, and the beam splitter structure includes a triangular pyramid beam splitting structure and a pyramid beam splitting compound arrangement structure.
  • the angle and height of the triangular pyramid light-splitting structure are respectively determined according to the apex angle of the triangular pyramid and the vertical distance from the apex of the triangular pyramid to the light-splitting plate.
  • the apex angle of the triangular pyramid is between 95 degrees and 130 degrees.
  • the distance between the apex of the triangular pyramid light splitting structure and the light splitting plate is between 0.5 mm and 1.5 mm, and the distance between the bottom end of the triangular pyramid light splitting structure and the bottom end of the light splitting plate is between 0.5 mm and 1.5 mm. Between 1.5mm.
  • the length of the bottom side of the triangular pyramid light-splitting structure varies according to the angle and height, and the side lengths of the triangular pyramid light-splitting structure are arranged on the surface of the light-splitting plate in a positive and negative manner to form the composite arrangement of the pyramid light-splitting structure.
  • a beam splitter the beam splitter is located above the light source, it includes a first beam splitter structure, a second beam splitter structure, the first beam splitter structure is fixedly connected to the upper end of the beam splitter, and the first beam splitter
  • the beam splitter structure includes a triangular pyramid beam splitter structure; the second beam splitter structure is fixedly connected to the lower end of the beam splitter, and the second beam splitter structure is a plane or a non-plane.
  • the triangular pyramid light splitting structure is determined according to the vertical distance from the apex of the triangular pyramid to the light splitter plate and the side length extending from the apex of the triangular pyramid to the light splitter plate.
  • the vertical distance from the apex of the triangular pyramid to the beam splitter is between 1 mm and 2.5 mm, and the three sides extending from the apex of the triangular pyramid to the beam splitter are equal in length and range between Between 2mm-5mm.
  • the vertical distance from the apex of the triangular pyramid to the beam splitter is between 0.18mm-0.65mm, and the three sides extending from the apex of the triangular pyramid to the beam splitter are equal in length and range between Between 0.4mm-1mm.
  • the top angle of the triangular pyramid light-splitting structure changes according to the vertical distance and the side length, and the side lengths of the triangular pyramid light-splitting structure are arranged on the surface of the light-splitting plate in a positive and negative manner.
  • the non-plane includes a plurality of concave arc-shaped structures, wherein each of the concave arc-shaped structures is arranged corresponding to each of the triangular pyramid light-splitting structures on the light-splitting plate.
  • the beneficial effects of the present invention are: 1) the beam splitter includes a beam splitter structure, the beam splitter structure includes a triangular pyramid light splitting structure and a pyramid light splitting compound arrangement structure, and the angle and height of the triangular pyramid light splitting structure are respectively based on The apex angle of the triangular pyramid and the vertical distance from the apex of the triangular pyramid to the beam splitter are determined, which can make the incident light continuously reflect and guide the light into the dark area, which improves the light splitting effect; 2) The beam splitter can also include the first beam splitter The plate structure and the second beam splitter structure.
  • the triangular pyramid beam splitter structure is determined according to the vertical distance from the apex of the triangular pyramid to the beam splitter and the side length extending from the apex of the triangular pyramid to the beam splitter.
  • the second beam splitter structure It can be a plane or a non-plane, so that the light incident on the beam splitter can be continuously reflected in different directions, guide the light into the dark area between the light source lattice, and fully convert the point light source into a soft and uniform surface light source, not only It can achieve good shielding performance for the light source lattice and can also effectively improve the light transmittance of the beam splitter.
  • FIG. 1 is a schematic diagram of the overall structure of the beam splitter architecture in the first embodiment of the present invention
  • Fig. 2 is a schematic structural view of one of the triangular pyramid light splitting structures in the first embodiment of the present invention
  • Fig. 3 is the second structural representation of the triangular pyramid light splitting structure in the first embodiment of the present invention.
  • Fig. 4 is the schematic diagram of pyramid light-splitting compound arrangement structure in the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the overall structure of the beam splitter architecture in the second embodiment of the present invention.
  • Fig. 6 is a schematic side view of the overall structure of the beam splitter structure in the second embodiment of the present invention.
  • the spectroscopic plate provided by the present invention is based on the structural design of the triangular pyramid. According to the shape of the microstructure on the spectroscopic plate, the light is continuously reflected and guided to fully disperse the light, so that the dark areas generated in the light source array also disperse the light and improve the spectroscopic effect.
  • the height and angle setting framework of the triangular pyramid of the MINI LED beam splitter includes LED lamp board 1, LED lamp bead 2, beam splitter 3, beam splitter structure 4, LED
  • the lamp beads 2 are located on the upper outer surface of the LED lamp panel 1
  • the beam splitter 3 is located above the LED lamp beads 2
  • the beam splitter structure 4 is located on the upper outer surface of the beam splitter 3
  • the upper outer surface of the beam splitter 3 is provided with a triangular pyramid light splitting structure 5 and pyramid light-splitting compound arrangement structure 6.
  • the triangular pyramid light-splitting structure 5 is arranged on the upper outer surface of the light-splitting plate 3, and the height and angle structure design of the triangular pyramid light-splitting structure 5 are divided into two parameters. to calculate.
  • angle of the triangular pyramid light splitting structure 5 is between 95 degrees and 130 degrees.
  • the distance from the apex to the bottom of the triangular pyramid light splitting structure 5 is between 0.5 mm and 1.5 mm
  • the distance H between the bottom end of the triangular pyramid light splitting structure 5 and the bottom end of the light splitting plate 3 is between 0.5 mm and 1.5 mm.
  • the length of the lower side of the triangular pyramid light-splitting structure 5 changes according to its angle and the distance value from the apex to the bottom of the triangular pyramid light-splitting structure 5, and the side lengths of the triangular pyramid light-splitting structure 5 are arranged on the surface of the light-splitting plate 3 in a positive and negative manner as light-splitting structure.
  • the pyramid light-splitting compound arrangement structure 6 is arranged on the position of the upper outer surface of the light-splitting plate 3, and the pyramid light-splitting compound arrangement structure 6 repeats the structural shape with the PITCH (spacing) position of the LED on the basis of the triangular pyramid light-splitting structure 5 .
  • the present invention includes LED lamp board 1, LED lamp beads 2, beam splitter 3, beam splitter structure 4, triangular pyramid beam splitter structure 5, pyramid beam splitter compound arrangement structure 6, when in use, the triangular Pyramid light-splitting structure 5 is arranged on the position of the upper outer surface of light-splitting plate 3, and the height and angle structure design of triangular pyramid light-splitting structure 5 are divided into two parameters, which are calculated according to the distance from the top to the bottom of triangular pyramid light-splitting structure 5 and the top angle.
  • the angle of the pyramid light-splitting structure 5 is between 95 degrees and 130 degrees, the distance from the apex to the bottom of the triangular pyramid light-splitting structure 5 is between 0.5 mm and 1.5 mm, and the distance from the bottom end of the triangular pyramid light-splitting structure 5 to the bottom end of the beam-splitting plate 3 is between 0.5 mm and 1.5 mm. Between 0.5mm and 1.5mm, the length of the lower side of the triangular pyramid light-splitting structure 5 varies according to its angle and the distance from the apex to the bottom of the triangular pyramid light-splitting structure 5.
  • the surface of the plate 3 is used as a light-splitting structure, and the pyramid light-splitting compound arrangement structure 6 is arranged at the position of the upper outer surface of the light-splitting plate 3.
  • the pyramid light-splitting compound arrangement structure 6 repeats the structure at the PITCH position of the LED on the basis of the triangular pyramid light-splitting structure 5 Shape, add a composite beam splitter on the MINI LED lamp board, the distance between the beam splitter and the light source is not limited, and use the composite board to solve the problem of bright and dark areas of LED lamp beads by using multiple structural beam splitters.
  • the distance from the top to the bottom and the angle of the top are used to calculate the light-splitting efficiency of the structure, so that the light source can guide the light into the dark area through continuous reflection through the triangular pyramid structure on the beam-splitting plate, improving the light-splitting effect.
  • the beam splitter includes a beam splitter 3, a first beam splitter structure 7, and a second beam splitter structure 8, and the first beam splitter structure 7 and the second beam splitter structure 8 are respectively located on two opposite sides of the beam splitter 3.
  • the first beam splitter structure 7 is fixedly connected to the upper outer surface of the beam splitter 3
  • the second beam splitter structure 8 is fixedly connected to the lower outer surface of the beam splitter 3 .
  • the overall combined structure with other components is a distributed structure up and down, the LED light board 1 is located at the bottom of the overall structure, and the upper surface of the LED light board 1 is fixedly connected There are LED lamp beads 2, and the beam splitter 3 is set above the LED lamp beads 2.
  • the light emitted by the light source is injected by the second beam splitter structure 8 on the beam splitter 3, and emitted by the first beam splitter structure 7 on the beam splitter 3. , only setting the beam splitter above the light source can achieve better diffusion of light.
  • the microstructure treatment on the surface of the beam splitter 3 the light incident on the beam splitter can be continuously reflected in different directions, and the light can be guided into the dot matrix of the light source.
  • the dark area in between can fully convert the point light source into a soft and uniform surface light source, which can not only achieve good shielding of the light source lattice, but also effectively improve the light transmittance of the beam splitter.
  • the distance from the beam splitter 3 to the light source of the LED bead 2 is not limited and can be adjusted as required. If the beam splitter of the present invention is applied to a display, and there are certain requirements for the thickness in the design of the display, then the beam splitter can be adjusted according to the design requirements of the thickness, and the best brightness of the display can be effectively guaranteed on the basis of meeting the thickness requirement. Effect.
  • the first beam-splitting plate structure 7 includes a triangular pyramid light-splitting structure 5, wherein the triangle at the bottom of the triangular pyramid light-splitting structure 5 is an equilateral triangle, and the side lengths of the bottom surface of the triangular pyramid light-splitting structure 5 are arranged on the beam-splitting plate in a positive and negative arrangement.
  • the first beam splitter structure 7 emits a beam splitter, which is used to change the propagation direction of the incident light, make it more evenly dispersed, improve the brightness, and solve the problem of bright and dark areas generated in the propagation of the light source lattice.
  • the design of the triangular pyramid light splitter structure has the smallest light-receiving area compared to other quadrangular pyramids or hemispheres, which can further reduce the light transmittance of the beam splitter and thus better cover
  • the bright spots in the light source can better solve the problem of bright and dark areas in the light source lattice propagation.
  • the vertical distance from the apex of the triangular pyramid to the upper end outer surface of the light-splitting plate 3 is between 1mm-2.5mm, by the apex of the triangular pyramid
  • the three sides extending to the outer surface of the upper end of the beam splitter 3 are equal in length and range in length from 2 mm to 5 mm.
  • the angle of the vertices of the triangular pyramid light splitting structure 5 varies according to its height and side length.
  • the light-splitting plate including the triangular pyramid light-splitting structure 5 has clearly visible surface textures, so that it has a better light-splitting effect.
  • the vertical distance from the apex of the triangular pyramid to the upper outer surface of the beam splitter 3 is between 0.18mm-0.65mm, and the three sides extending from the apex of the triangular pyramid to the upper outer surface of the beam splitter 3 have the same length Equal and the range of side length is between 0.4mm-1mm, the angle of the vertices of the triangular pyramid light splitting structure 5 changes according to the change of its height and side length.
  • the beam splitting plate including the triangular pyramid beam splitting structure 5 has a thin structure thickness on the basis of ensuring a certain beam splitting effect, and can be selected and used according to actual usage requirements.
  • the second beam splitter structure 8 is positioned at the lower end outer surface of the beam splitter 3, the light source is injected into the beam splitter by the second beam splitter structure 8, and its structural design can be a plane or a non-plane, in this second embodiment, the second The beam splitter structure 8 is composed of a plurality of concave arc-shaped structures, and the arrangement position of each concave arc-shaped structure on the outer surface of the lower end of the beam splitter 3 corresponds to the structure of each triangular pyramid light-splitting structure 5 on the outer surface of the upper end of the beam splitter 3 .
  • the second beam splitter structure 8 with multiple concave arc-shaped structures can further disperse the incident light of the beam splitter, further solving the problem of bright and dark areas in the light source dot matrix propagation.
  • the working principle of the second embodiment at first determine the triangular pyramid light-splitting structure: according to the numerical range from the apex of the triangular pyramid to the upper end outer surface of the beam splitter 3 and the apex of the triangular pyramid extending to each of the upper end outer surfaces of the beam splitter 3
  • the numerical range of side length determines a single triangular pyramid structure, and a plurality of triangular pyramid 3 structures with a fixed shape are arranged on the beam splitter 3 in the forward and reverse arrangement of the length of the bottom side;
  • a plurality of triangular pyramid light-splitting structures 5 on the surface, and a plurality of concave arc-shaped structures corresponding to the outer surface of the lower end of the light-splitting plate 3 constitute the second light-splitting plate structure 8 .
  • the beam splitter with the first beam splitter structure 7 and the second beam splitter structure 8 is placed above the LED lamp bead 2, and applied to the design of the backlight module of the display.
  • the distance of the beam splitter above the LED lamp bead 2 can be adjusted according to actual needs.
  • the light from the LED lamp bead 2 array as the light source enters the beam splitter from the second beam splitter structure 8, and leaves the beam splitter from the first beam splitter structure 7.
  • the light Through the continuous reflection of the microstructure, the guided light is fully dispersed, and the plane point light source is converted into a multi-light source or a method light source, which solves the problem of bright and dark areas generated by the LED lamp bead 2 array, and achieves the optimization of the thickness and brightness of the display. Effect.

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Abstract

本发明公开了一种分光板，分光板位于光源上方，其包括分光板结构，分光结构固定连接于分光板上，分光结构包括三角棱锥分光结构及棱锥分光复合排列结构，三角棱锥分光结构依据三角棱锥体的顶端角度及三角棱锥体的顶点到分光板主体的上端外表面的垂直距离来确定；还提供一分光板，包括第一分光板结构和第二分光板结构，其三角棱锥分光结构依据三角棱锥体的顶点到分光板的垂直距离及三角棱锥体的顶点延伸至分光板的边长来确定。本发明使入射光线在微结构中连续反射，不仅使光线进入暗区实现对光源点阵的良好遮蔽性，还能有效提高分光板的透光率。

Description

一种分光板 技术领域
本发明涉及LED灯领域，具体而言，涉及一种分光板。
背景技术
MINI LED分光板架构是一种进行LED灯光源扩散的支撑结构，采用单颗LED灯珠依据间距设计，将灯珠一颗一颗的焊在硬板或软板上，会在灯珠与灯珠之间产生视觉上的暗区，降低LED灯的使用性能，需要对暗区进行扩散，随着科技的不断发展，人们对于MINI LED分光板要求也越来越高。
现有的分光板在使用时存在一定的弊端，首先，传统方式会利用许多导光组件或光学膜来对光源进行分散，或是藉着提高光学膜与LED间的距离，使得LED的光得到较好的混光空间进而达到背光画面均的的效果，但其缺点就是会让整个显视器的机构厚度增加并显得笨重，给人们的使用过程带来了一定的不利影响。近两年MINI LED的背光需求日益增加，对于MINI LED背光亮暗区的问题也是一直困扰着背光模块的研发人员，并不断的开发新的膜片对MINI LED光源进行更高效的光学混光侧试，为此，亟需开发一种新型分光板以适应市场需求。
发明内容
为此，本发明提供了一种分光板，该分光板设置于LED灯珠上方，主要是基于多个三角棱锥体结构的设计将平面点光源转成多光源或放大光源的分光板设计，解决了LED灯珠亮暗区的问题，不仅结构简单，还能使亮度达到最佳化效果；分光板与灯源的距离还可根据需要进行调整，可有效解决厚度限制条件下的应用设计。
为实现上述目的，本发明主要采用以下技术方案：
一种分光板，所述分光板位于光源上方，其包括分光板结构，所述分光板结构位于所述分光板上，且所述分光板结构包括三角棱锥分光结构及棱锥分光复合排列结构。
优选地，所述三角棱锥分光结构的角度及高度分别依据三角棱锥体的顶端角度及三角棱锥体的顶点到所述分光板的垂直距离来确定。
优选地，所述三角棱锥体的顶端角度介于95度～130度之间。
优选地，所述三角棱锥分光结构顶点到所述分光板的距离介于0.5mm～1.5mm之间，所述三角棱锥分光结构的底端到所述分光板的底端的距离介于0.5mm～1.5mm之间。
优选地，所述三角棱锥分光结构的底边边长依据所述角度和高度变化，所述三角棱锥分光结构的边长以正反方式排列在所述分光板表面以形成所述棱锥分光复合排列结构。
一种分光板，所述分光板位于光源上方，其包括、第一分光板结构、第二分光板结构，所述第一分光板结构固定连接于所述分光板的上端，且所述第一分光板结构包括三角棱锥分光结构；所述第二分光板结构固定连接于所述分光板的下端，所述第二分光板结构为一平面或一非平面。
优选地，所述三角棱锥分光结构依据三角棱锥体的顶点到所述分光板的垂直距离及三角棱锥体的顶点延伸至所述分光板的边长来确定。
优选地，所述三角棱锥体的顶点到所述分光板的垂直距离介于1mm-2.5mm之间，由所述三角棱锥体的顶点延伸至所述分光板的三条边长相等且范围介于2mm-5mm之间。
优选地，所述三角棱锥体顶点到所述分光板的垂直距离介于0.18mm-0.65mm之间，由所述三角棱锥体的顶点延伸至所述分光板的三条边长相等且范围介于0.4mm-1mm之间。
优选地，所述三角棱锥分光结构的顶端角度依据所述垂直距离及所述边长变化，所述三角棱锥分光结构的边长以正反方式排列在所述分光板表面。
优选地，所述非平面包括多个凹面弧形结构，其中，每个所述凹面弧形结构与所述分光板上的每个所述三角棱锥体分光结构相对应布置。
与现有技术相比，本发明的有益效果是：1)分光板包括一分光板结构，分光板结构包括三角棱锥分光结构及棱锥分光复合排列结构，该三角棱锥分光结构的角度及高度分别依据三角棱锥体的顶端角度及三角棱锥体的顶点到分光板的垂直距离来确定，可使入射光线连续反射引导光进入暗区，提高了分光的效 果，；2)分光板还可包括第一分光板结构和第二分光板结构，第一分光板结构中三角棱锥分光结构依据三角棱锥体顶点到分光板的垂直距离及三角棱锥体顶点延伸至分光板的边长来确定，第二分光板结构可以为一平面或一非平面，使入射到分光板的光线得到不同方向连续的反射，引导光线进入光源点阵之间的暗区，充分地将点光源转化为柔和、均匀的面光源，不仅能实现对光源点阵的良好遮蔽性也能有效提高分光板的透光率。
附图说明
图1为本发明第一实施方案中分光板架构的整体结构示意图；
图2为本发明第一实施方案中三角棱锥分光结构其一的结构示意图；
图3为本发明第一实施方案中三角棱锥分光结构其二的结构示意图；
图4为本发明实施例中棱锥分光复合排列结构的示意图；
图5为本发明第二实施方案中分光板架构的整体结构示意图；
图6为本发明第二实施方案中分光板架构的整体结构侧面示意图。
具体实施方式
下面将结合示意图对本发明的具体实施方式进行更详细的描述。根据下列描述，本发明的优点和特征将更清楚。需说明的是，附图均采用非常简化的形式且均使用非精准的比例，仅用以方便、明晰地辅助说明本发明实施例的目的。
本发明提供的分光板是三角棱锥体结构设计的基础上，根据分光板上的微结构形状将光线连续反射引导光线充分分散，使光源阵列中产生的暗区也分散入光线，提高分光效果。
在一实施方案中，如图1-4所示，MINI LED分光板三角棱椎体高度及角度设定架构，包括LED灯板1、LED灯珠2、分光板3、分光板结构4，LED灯珠2位于LED灯板1的上端外表面，分光板3位于LED灯珠2的上方，分光板结构4位于分光板3的上端外表面，分光板3的上端外表面设置有三角棱锥分光结构5与棱锥分光复合排列结构6。
进一步的，三角棱锥分光结构5设置在分光板3的上端外表面的位置，三角棱锥分光结构5高度及角度结构设计区分为两个参数，依据三角棱锥分光结构5的顶端到底边距离及顶端角度来计算。
进一步的，三角棱锥分光结构5的角度介于95度～130度之间。
进一步的，三角棱锥分光结构5顶点到底端的距离介于0.5mm～1.5mm之间，三角棱锥分光结构5底端到分光板3底端的距离H介于0.5mm～1.5mm之间。
进一步的，三角棱锥分光结构5的低边边长依据其角度与三角棱锥分光结构5顶点到底端距离值变化，三角棱锥分光结构5的边长以正反方式排列在分光板3表面做为分光结构。
进一步的，棱锥分光复合排列结构6设置在分光板3的上端外表面的位置，棱锥分光复合排列结构6在三角棱锥分光结构5的基础上以LED的PITCH(间距)位置重复复制藉结构形状。
第一实施方案的工作原理：本发明包括LED灯板1、LED灯珠2、分光板3、分光板结构4、三角棱锥分光结构5、棱锥分光复合排列结构6，在进行使用的时候，三角棱锥分光结构5设置在分光板3的上端外表面的位置，三角棱锥分光结构5高度及角度结构设计区分为两个参数，依据三角棱锥分光结构5的顶端到底边距离及顶端角度来计算，三角棱锥分光结构5的角度介于95度～130度之间，三角棱锥分光结构5顶点到底端的距离介于0.5mm～1.5mm之间，三角棱锥分光结构5底端到分光板3底端的距离介于0.5mm～1.5mm之间，三角棱锥分光结构5的低边边长依据其角度与三角棱锥分光结构5顶点到底端距离值变化，三角棱锥分光结构5的边长以正反方式排列在分光板3表面做为分光结构，棱锥分光复合排列结构6设置在分光板3的上端外表面的位置，棱锥分光复合排列结构6在三角棱锥分光结构5的基础上以LED的PITCH位置重复复制藉结构形状，在MINI LED灯板上加上复合式分光板，分光板距离灯源的距离不受限，利用复合板多次结构分光来达到解决LED灯珠亮暗区的问题，依据三角棱椎体顶端到底边的距离及顶端角度去计算架构的分光效率，使得光源可以藉由分光板上的三角棱椎体结构，透过连续反射的方式引导光进入暗区，提高分光的效果。
在第二实施方案中，分光板包括分光板3、第一分光板结构7、第二分光板结构8，第一分光板结构7和第二分光板结构8分别位于分光板3的两个相对面，第一分光板结构7固定连接于分光板3的上端外表面，第二分光板结构8固定连接于分光板3的下端外表面。该分光板在应用中，如图5和图6所示，与其他部件的组合结构整体为上下分布式结构，LED灯板1位于整体结构最下方， LED灯板1的上端外表面上固定连接有LED灯珠2，分光板3设置于LED灯珠2的上方，光源发出的光由分光板3上的第二分光板结构8射入，由分光板3上的第一分光板结构7射出，仅在光源上方设置一该分光板即可实现光线的较好扩散，经分光板3表面的微结构处理，使入射到分光板的光线得到不同方向连续的反射，引导光线进入光源点阵之间的暗区，充分地将点光源转化为柔和、均匀的面光源，不仅能实现对光源点阵的良好遮蔽性也能有效提高分光板的透光率。
分光板3到LED灯珠2光源的距离不受限制，可根据需要进行调整。如将本发明的分光板应用于某显示器中，显示器设计中对厚度有一定要求，则该分光板可根据厚度的设计要求进行调整，在满足厚度要求的基础上可有效保证显示器最佳亮度的效果。
第一分光板结构7包括三角棱锥分光结构5，其中，三角棱锥分光结构5的底面三角形为正三角形，三角棱锥分光结构5的底面边长以正反向排列方式排列在分光板上，光源由第一分光板结构7射出分光板，用于改变入射光的传播方向，使其更加均匀分散，提高亮度，解决光源点阵传播中产生的亮暗区问题。当光源位于分光板结构下方时，三角棱锥分光结构的设计相对于其他四棱锥或半球体来讲，三角棱锥体有最小的受光面积，可以进一步降低分光板的透光率从而可更好的遮掩光源中的亮点，更好地解决光源点阵传播中的亮暗区问题。其中，对于三角棱锥分光结构5的形状确定，在第二实施方案中，三角棱锥体的顶点到分光板3的上端外表面的垂直距离介于1mm-2.5mm之间，由三角棱锥体的顶点延伸至分光板3上端外表面的三条边长相等且边长范围介于2mm-5mm之间，三角棱锥分光结构5顶点的角度依据其高度与边长的变化而变化。包含该三角棱锥分光结构5的分光板，其表面结构纹路清晰可见，从而使其具备更好地分光效果。在其他实施例中，三角棱锥体的顶点到分光板3的上端外表面的垂直距离介于0.18mm-0.65mm之间，由三角棱锥体的顶点延伸至分光板3上端外表面的三条边长相等且边长范围介于0.4mm-1mm之间，三角棱锥分光结构5顶点的角度依据其高度与边长的变化而变化。包含该三角棱锥分光结构5的分光板，在保证一定分光效果的基础上，其结构厚度薄，可根据实际使用需求做选择使用。
第二分光板结构8位于分光板3的下端外表面，光源由第二分光板结构8 射入分光板，其结构设计可以为一平面或一非平面，在该第二实施方案中，第二分光板结构8由多个凹面弧形结构组成，每个凹面弧形结构在分光板3下端外表面上的布置位置与分光板3上端外表面上的每个三角棱锥分光结构5结构相对应。带有多个凹面弧形结构的第二分光板结构8可对分光板的入射光线进一步分散，进一步解决光源点阵传播中的亮暗区问题。
第二实施方案的工作原理：首先确定好三角棱锥分光结构：根据三角棱锥体的顶点到分光板3的上端外表面的数值范围及三角棱锥体的顶点延伸至分光板3上端外表面的每条边长的数值范围确定单个三角棱锥体结构，将定好形状的多个三角棱锥体3结构以其底边边长的正反向排列方式布置在分光板3的上；根据分光板3的上端外表面上的多个三角棱锥分光结构5，在分光板3的下端外表面上与其对应设置多个凹面弧形结构组成第二分光板结构8。其次，将带有第一分光板结构7和第二分光板结构8的分光板置于LED灯珠2上方，应用于显示器的背光模块设计。分光板置于LED灯珠2上方的距离可根据实际需要进行调整，LED灯珠2阵列作为光源的光线从第二分光板结构8进入分光板，由第一分光板结构7离开分光板，光线经过微结构的不断连续反射的方式将引导光线充分分散，将平面点光源转成多光源或方法光源，解决LED灯珠2阵列产生的亮暗区问题，达到显示器厚度及亮度的最佳化的效果。
以上所述仅是本发明的优选实施例而已，并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种分光板，其特征在于，所述分光板位于光源上方，其包括分光板结构，所述分光板结构位于所述分光板上，且所述分光板结构包括三角棱锥分光结构及棱锥分光复合排列结构。
  2. 根据权利要求1所述的分光板，其特征在于，所述三角棱锥分光结构的角度及高度分别依据三角棱锥体的顶端角度及三角棱锥体的顶点到所述分光板的垂直距离来确定。
  3. 根据权利要求2所述的分光板，其特征在于，所述三角棱锥体的顶端角度介于95度～130度之间。
  4. 根据权利要求2所述的分光板，其特征在于，所述三角棱锥分光结构顶点到所述分光板的距离介于0.5mm～1.5mm之间，所述三角棱锥分光结构的底端到所述分光板的底端的距离介于0.5mm～1.5mm之间。
  5. 根据权利要求2所述的分光板，其特征在于，所述三角棱锥分光结构的底边边长依据所述角度和高度变化，所述三角棱锥分光结构的边长以正反方式排列在所述分光板表面以形成所述棱锥分光复合排列结构。
  6. 一种分光板，其特征在于，所述分光板位于光源上方，其包括第一分光板结构、第二分光板结构，所述第一分光板结构固定连接于所述分光板的上端，且所述第一分光板结构包括三角棱锥分光结构；所述第二分光板结构固定连接于所述分光板的下端，所述第二分光板结构为一平面或一非平面。
  7. 根据权利要求7所述，其特征在于，所述三角棱锥分光结构依据三角棱锥体的顶点到所述分光板的垂直距离及三角棱锥体的顶点延伸至所述分光板的边长来确定。
  8. 根据权利要求8所述，其特征在于，所述三角棱锥体的顶点到所述分光板的垂直距离介于1mm-2.5mm之间，由所述三角棱锥体的顶点延伸至所述分光板的三条边长相等且范围介于2mm-5mm之间。
  9. 根据权利要求8所述，其特征在于，所述三角棱锥体顶点到所述分光板的垂直距离介于0.18mm-0.65mm之间，由所述三角棱锥体的顶点延伸至所述分光板的三条边长相等且范围介于0.4mm-1mm之间。
  10. 根据权利要求8所述的分光板，其特征在于，所述三角棱锥分光结构的 顶端角度依据所述垂直距离及所述边长变化，所述三角棱锥分光结构的边长以正反方式排列在所述分光板表面。
  11. 根据权利要求7所述，其特征在于，所述非平面包括多个凹面弧形结构，其中，每个所述凹面弧形结构与所述分光板上的每个所述三角棱锥体分光结构相对应布置。
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