WO2014139278A1 - Led显示装置 - Google Patents

Led显示装置 Download PDF

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Publication number
WO2014139278A1
WO2014139278A1 PCT/CN2013/084216 CN2013084216W WO2014139278A1 WO 2014139278 A1 WO2014139278 A1 WO 2014139278A1 CN 2013084216 W CN2013084216 W CN 2013084216W WO 2014139278 A1 WO2014139278 A1 WO 2014139278A1
Authority
WO
WIPO (PCT)
Prior art keywords
led display
display panel
led
display device
cover unit
Prior art date
Application number
PCT/CN2013/084216
Other languages
English (en)
French (fr)
Inventor
张龙虎
卢长军
潘彤
Original Assignee
利亚德光电股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201310081813.3A external-priority patent/CN103150970B/zh
Priority claimed from CN201310081771.3A external-priority patent/CN103137029B/zh
Priority claimed from CN201310081814.8A external-priority patent/CN103150971B/zh
Application filed by 利亚德光电股份有限公司 filed Critical 利亚德光电股份有限公司
Priority to JP2015561909A priority Critical patent/JP6267242B2/ja
Priority to US14/759,435 priority patent/US9733401B2/en
Priority to CA2903265A priority patent/CA2903265A1/en
Priority to EP13877558.0A priority patent/EP2975601A4/en
Priority to KR1020157026323A priority patent/KR102057754B1/ko
Publication of WO2014139278A1 publication Critical patent/WO2014139278A1/zh

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0273Diffusing elements; Afocal elements characterized by the use
    • G02B5/0294Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of LED display technology, and in particular to an LED display device.
  • Background Art In the prior art, an LED display screen is composed of a single LED lamp. The above LED display screen will appear grainy when displayed, and moiré will appear due to particle phenomenon during photography. In the prior art, the above problem is solved by adding a translucent glass or a translucent plastic plate to the outside of the LED display screen, but the above method has the following drawbacks:
  • the size of the glass or plastic plate is limited, which in turn causes the display to be infinitely large and can only be limited to a certain size. If it exceeds a certain size and needs to be spliced, since the glass or plastic plate needs to be fixed by the frame after the splicing, that is, each glass or plastic plate has a frame in the circumferential direction. In this way, there will be obvious seams, and there will be obvious phenomena similar to the video wall seams, which will affect the display effect.
  • the present invention is directed to an LED display device having a small splicing gap.
  • the present invention provides an LED display device comprising: an LED display panel; a mask disposed on one side of the LED display panel, the mask comprising a plurality of transmissive cover units, each of the transmissive cover units and the LED display The board is bonded, and a positioning structure is disposed between the translucent cover unit and the LED display panel to define a pasting position of each transmissive cover unit on the LED display panel.
  • each of the LED display panels is bonded with a plurality of transparent cover units.
  • each of the transmissive cover units has a first side facing the LED display panel and a second side facing away from the LED display panel, the second side is planar and is provided with a unidirectional transparent film, and the unidirectional transparent film is along the first side Light is transmitted from the side to the second side. Further, the unidirectional light transmittance of the unidirectional light transmissive film is greater than 60%.
  • the material of the translucent cover unit is glass or plastic. Further, the position of each LED lamp corresponding to the LED display panel on the transparent cover unit is provided with a receiving blind hole adapted to the shape of the LED lamp.
  • a position of each of the LED lamps corresponding to the LED display panel on the transparent cover unit is provided with a protruding portion, and the protruding portion has a central blind hole to form a blind hole, and a second portion is formed between the adjacent two protruding portions. a groove. Further, the groove depth of the first groove is smaller than the hole depth of the blind hole.
  • the positioning structure includes: at least two positioning holes are disposed on the LED display panel, and the positioning protrusions are disposed on the transmissive cover unit and are matched in one-to-one correspondence with the positioning holes.
  • the LED display panel comprises a light board and an LED light disposed on the light board, and the light transmissive cover unit is bonded to the light board or the LED light.
  • the mask comprises a plurality of transparent cover units, and each of the transparent cover units is bonded to the LED display panel, so that the transparent cover unit does not need to be fixed by the frame, thereby effectively reducing the stitching gap.
  • a positioning structure is disposed between the translucent cover unit and the LED display panel to define a pasting position of each transmissive cover unit on the LED display panel. By positioning the positioning structure, the position of the transparent cover unit connected to the LED display panel is more accurate, thereby helping to reduce the splicing gap.
  • the technical solution of the present application can effectively reduce the splicing gap.
  • FIG. 1 is a partial schematic view showing a first embodiment of a light-shielding cover unit of a mask of the LED display device of FIG. 1;
  • FIG. Figure 3 shows an enlarged schematic view of A of the translucent cover unit of Figure 2;
  • Figure 4 shows a schematic view of the second side of the translucent cover unit of Figure 2;
  • Figure 5 shows an LED display device according to the present invention A bottom view of the translucent cover unit of the third embodiment;
  • FIG. 6 shows an enlarged schematic view of the translucent cover unit of FIG.
  • the above figures include the following reference numerals: 1. LED display panel; 10. Translucent cover unit; 11, first side; 12, second side; 13. accommodating blind hole; 14. protruding portion; 15, first groove; 16, positioning protrusion; 17. The second groove.
  • the LED display device of the first embodiment includes an LED display panel 1 and a mask.
  • the mask is disposed on one side of the LED display panel 1.
  • the mask includes a plurality of transmissive cover units 10, each of the transmissive cover units 10 is bonded to the LED display panel 1, and between the transmissive cover unit 10 and the LED display panel 1.
  • the LED display panel 1 includes a light panel and an LED lamp disposed on the light panel, and the light transmissive cover unit 10 is bonded to the light panel or the LED lamp.
  • the plurality of transmissive cover units 10 of the mask are identical in structure, and they are arranged in a matrix on the LED display panel 1.
  • the plurality of transmissive cover units 10 of the mask may also have different structures.
  • the size of the transmissive cover unit 10 is greatly reduced compared to the technical solution of a plurality of LED display panels corresponding to a single glass or plastic plate in the prior art.
  • the translucent cover unit 10 does not have to be fixed by the bezel, thereby effectively reducing the splicing gap.
  • the reduction in the size of the translucent cover unit 10 can effectively solve the workability, and the processing accuracy of the translucent cover unit 10 can be improved.
  • each of the translucent cover units 10 has a first side 11 facing the LED display panel 1 and a second side 12 facing away from the LED display panel 1, the second side 12 being planar, and the second side 12 A unidirectional light transmissive film is disposed thereon, and the unidirectional light transmissive film transmits light along the first side 11 to the second side 12 .
  • the unidirectional light transmissive film can be realized by coating a surface on the second side of the translucent cover unit. In order to achieve a better display effect, a unidirectional light transmissive film having a unidirectional transmittance of more than 60% is preferably used.
  • the material of the translucent cover unit needs to be transparent. Ming plastic, preferably glass or plastic. In order to improve the display effect, the light of the LED lamp is prevented from leaking from the side.
  • the position of each LED lamp corresponding to the LED display panel 1 on the transparent cover unit 10 is set to be suitable for the shape of the LED lamp.
  • the accommodating blind hole 13 is formed to form a luminescent light cup.
  • the accommodating blind hole 13 can also perform a good positioning function when the translucent cover unit 10 is adhered to the LED display panel 1.
  • the accurate positioning can further reduce the splicing gap.
  • the position of each LED lamp corresponding to the LED display panel 1 on the transparent cover unit 10 is provided with a protruding portion 14, and the protruding portion 14 has a central blind hole to form the above-mentioned receiving blind hole. 13.
  • the one-to-one correspondence between the above-mentioned accommodating blind holes 13 and the LED lamps is also advantageous for the mask to be flat and uniform.
  • a first recess 15 is formed between the adjacent two projections 14.
  • the groove depth of the first groove 15 is smaller than the hole depth of the accommodating blind hole 13.
  • the positioning structure for positioning between the transparent cover unit 10 and the LED display panel 1 can be implemented in various manners. As shown in FIG. 3, in the first embodiment, the positioning structure includes positioning holes and positioning protrusions 16 that cooperate with each other. The positioning holes are at least two, and are disposed on the LED display panel 1. The positioning protrusions 16 are preferably disposed on the transmissive cover unit 10 in the same number as the positioning holes. In the prior art, with the development of the display market, the mirror display is applied in the fields of advertisement display and the like.
  • the mirror display screen in the prior art usually adopts a mirror liquid crystal display screen, and the mirror effect is realized by adding a coated glass or a plastic plate outside the display screen.
  • the above structure has various defects mentioned in the background art, and in addition, the above structure has the following drawbacks:
  • each of the transmissive cover units has a first side facing the LED display panel and a second side facing away from the LED display panel, the second side being planar and provided with a mirror semipermeable membrane.
  • the adhesive connection Due to the adhesive connection, it is easy to ensure the flatness and uniformity of the entire mask.
  • the LED display panel When the LED light is not lit, the viewer cannot see the LED display panel from the second side, and the surface of the mask forms a mirror effect.
  • the LED light When the LED light is on, the viewer can see the content displayed on the LED display panel from the second side. . In this way, the graininess is effectively eliminated and the visual experience of the viewer is effectively improved.
  • the technical solution of the second embodiment makes the LED display device have small stitching gaps and good flatness, and no concave or convex phenomenon occurs.
  • the naked-eye 3D display device is applied in the fields of advertisement display and the like.
  • the above structure has various defects mentioned in the background art, and in addition, the above structure has the following drawbacks: Due to the strength requirement, the larger the size of the glass or plastic plate, the thicker the thickness is required, resulting in a larger weight.
  • the LED display device according to the third embodiment of the present application effectively solves the above problems, and the LED display device of the third embodiment differs from the above-described embodiment in the structure of the second side.
  • Each transmissive cover unit 10 has a first side 11 facing the LED display panel 1 and a second side 12 facing away from the LED display panel 1, as shown in Figures 5 and 6, the second side 12 is provided with a grating structure, such that Can achieve the naked eye 3D effect. In addition, due to the adhesive connection, it is easy to ensure the flatness and uniformity of the entire mask.
  • the technical solution of the third embodiment makes the LED display device have small stitching gaps and good flatness.
  • the second side 12 is provided with a plurality of second grooves 17 disposed in parallel to form a grating structure.
  • the second groove 17 has a V-shaped cross section.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

一种LED显示装置,包括:LED显示板(1);面罩,设置在LED显示板(1)的一侧。面罩包括多个透光罩单元(10),各透光罩单元(10)均与LED显示板(1)粘接,并且透光罩单元(10)和LED显示板(1)之间具有定位结构以限定各透光罩单元(10)在LED显示板(1)上的粘贴位置。该LED显示装置拼接缝隙小,显示效果较好。

Description

LED显示装置 技术领域 本发明涉及 LED显示技术领域, 具体而言, 涉及一种 LED显示装置。 背景技术 在现有技术中, LED显示屏是由一颗颗 LED灯构成的。 上述 LED显示屏在显示 时会出现颗粒感, 此外在摄影时由于颗粒现象会出现摩尔纹。 现有技术中通过在 LED 显示屏外增加一块半透明玻璃或半透明塑料板来解决以上问题, 但上述方式具有以下 缺陷:
1、考虑到运输等原因, 玻璃或塑料板尺寸受到限制, 进而导致显示屏无法无限放 大, 只能局限于某个尺寸。 如果超过一定尺寸而需要进行拼接, 由于玻璃或塑料板拼 接后需要通过边框固定, 即每块玻璃或塑料板的周向均会有边框。 这样, 会出现明显 的拼缝, 会出现类似电视墙拼缝明显的现象, 进而影响显示效果。
2、 玻璃或塑料板固定困难, 会造成和 LED灯面距离存在差异, 从而产生显示效 果不一致, 影响显示效果。 发明内容 本发明旨在提供一种拼接缝隙小的 LED显示装置。 为了实现上述目的, 本发明提供了一种 LED显示装置, 包括: LED显示板; 面 罩, 设置在 LED显示板的一侧, 面罩包括多个透光罩单元, 各透光罩单元均与 LED 显示板粘接, 并且, 透光罩单元和 LED显示板之间具有定位结构以限定各透光罩单元 在 LED显示板上的粘贴位置。 进一步地, LED显示板为多个, 每个 LED显示板上均粘接有多个透光罩单元。 进一步地, 每个透光罩单元具有朝向 LED显示板的第一侧和背离 LED显示板的 第二侧,第二侧呈平面并设置有单向透光膜,单向透光膜沿第一侧至第二侧方向透光。 进一步地, 单向透光膜的单向透光率大于 60%。 进一步地, 透光罩单元的材质为玻璃或者塑料。 进一步地,透光罩单元上对应 LED显示板的各 LED灯的位置设置有与 LED灯形 状适配的容纳盲孔。 进一步地, 透光罩单元上对应 LED显示板的各 LED灯的位置设置有凸出部, 凸 出部具有中心盲孔以形成容纳盲孔, 相邻的两个凸出部之间形成有第一凹槽。 进一步地, 第一凹槽的槽深小于容纳盲孔的孔深。 进一步地, 定位结构包括: 至少两个定位孔, 设置在 LED显示板上, 定位凸柱, 设置在透光罩单元上, 并与各定位孔一一对应地配合。 进一步地, LED显示板包括灯板和设置在灯板上的 LED灯, 透光罩单元与灯板 或者 LED灯粘接。 应用本发明的技术方案, 面罩包括多个透光罩单元, 各透光罩单元均与 LED显示 板粘接, 这样, 透光罩单元不必再使用边框固定, 从而有效地减小了拼接缝隙。 并且, 透光罩单元和 LED显示板之间具有定位结构以限定各透光罩单元在 LED显示板上的 粘贴位置。通过定位结构的定位, 使得透光罩单元连接在 LED显示板上的位置更加准 确, 进而有助于减小了拼接缝隙。 本申请的技术方案能够有效地减少拼接缝隙。 附图说明 构成本申请的一部分的说明书附图用来提供对本发明的进一步理解, 本发明的示 意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图中: 图 1示出了根据本发明的 LED显示装置的实施例一的局部结构示意图; 图 2示出了图 1的 LED显示装置的面罩的透光罩单元的第一侧的示意图; 图 3示出了图 2的透光罩单元的 A处放大示意图; 图 4示出了图 2的透光罩单元的第二侧的示意图; 图 5示出了根据本发明的 LED显示装置的实施例三的透光罩单元的仰视示意图; 以及 图 6示出了图 5的透光罩单元的 B处放大示意图。 上述附图包括以下附图标记: 1、 LED 显示板; 10、 透光罩单元; 11、 第一侧; 12、 第二侧; 13、 容纳盲孔; 14、 凸出部; 15、 第一凹槽; 16、 定位凸柱; 17、 第二凹槽。 具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特征可以相 互组合。 下面将参考附图并结合实施例来详细说明本发明。 如图 1所示, 实施例一的 LED显示装置包括 LED显示板 1和面罩。 面罩设置在 LED显示板 1的一侧, 面罩包括多个透光罩单元 10, 各透光罩单元 10均与 LED显示 板 1粘接, 并且, 透光罩单元 10和 LED显示板 1之间具有定位结构以限定各透光罩 单元 10在 LED显示板 1上的粘贴位置。 通过定位结构的定位, 使得透光罩单元连接 在 LED显示板上的位置更加准确, 进而有助于减小了拼接缝隙。
LED显示板 1包括灯板和设置在灯板上的 LED灯,透光罩单元 10与灯板或者 LED 灯粘接。 如图 1所示, 在实施例一中, 面罩的多个透光罩单元 10结构相同, 它们呈矩 阵状布置在 LED显示板 1 上。 当然, 作为可行的实施方式, 面罩的多个透光罩单元 10也可以结构不相同。 优选地, 在实施例一中, LED显示板 1为多个, 每个 LED显示板 1上均粘接有 多个透光罩单元 10。 这样, 相比于现有技术中的多个 LED显示板对应一块玻璃或塑 料板的技术方案, 大大缩小了透光罩单元 10的尺寸。 这样, 透光罩单元 10不必再使 用边框固定, 从而有效地减小了拼接缝隙。 另一方面, 缩小了透光罩单元 10的尺寸能 够有效地解决可加工性, 从而能够提高透光罩单元 10的加工精度。 透光罩单元 10的 尺寸越小, 外形精度就越高, 一致性也越好。 这样, 拼接后差别就越小, 缝隙接近, 并且能够控制到不影响显示效果范围, 从而满足显示需要。 需要说明的是, 图 1仅示 出了实施例一的 LED显示装置的一个 LED显示板以及与它对应连接的多个透光罩单 元 10。 如图 2至图 4所示,每个透光罩单元 10具有朝向 LED显示板 1的第一侧 11和背 离 LED显示板 1的第二侧 12, 第二侧 12呈平面, 第二侧 12上设置有单向透光膜, 单向透光膜沿第一侧 11至第二侧 12方向透光。 这样, 当 LED灯不点亮时, 观看者从 第二侧无法看到 LED显示板, 只有当 LED灯点亮时, 观看者才能从第二侧看到 LED 显示板上显示的内容。这样,有效地消除了颗粒感并有效地提高了观看者的视觉体验。 上述单向透光膜可以通过在透光罩单元的第二侧的表面镀膜实现, 为了达到较好 的显示效果, 优选采用单向透光率大于 60%的单向透光膜。 透光罩单元的材质需为透 明塑料, 优选为玻璃或者塑料。 为了提高显示效果, 避免 LED灯的光从侧面泄露, 如 图 3所示, 在实施例一中, 透光罩单元 10上对应 LED显示板 1的各 LED灯的位置设 置有与 LED灯形状适配的容纳盲孔 13, 进而形成发光光杯。 同时, 该容纳盲孔 13也 能够在透光罩单元 10粘接在 LED显示板 1上时起到很好的定位作用, 定位准确能够 进一步地减小拼接缝隙。 如图 3所示, 在实施例一中, 透光罩单元 10上对应 LED显示板 1的各 LED灯的 位置设置有凸出部 14, 凸出部 14具有中心盲孔以形成上述容纳盲孔 13。 上述容纳盲 孔 13与各 LED灯一一对应同样有利于面罩平整和一致。为了透光罩单元的增加强度, 相邻的两个凸出部 14之间形成有第一凹槽 15。 优选地, 第一凹槽 15的槽深小于容纳 盲孔 13的孔深。 用于透光罩单元 10和 LED显示板 1之间定位的定位结构可以有多种实现方式, 如图 3所示, 在实施例一中, 定位结构包括彼此配合的定位孔和定位凸柱 16, 定位孔 至少为两个, 设置在 LED显示板 1上, 定位凸柱 16优选与定位孔数量相同, 设置在 透光罩单元 10上。 现有技术中, 随着显示屏市场的发展, 镜面显示屏在广告展示等领域被应用。 现 有技术中的镜面显示屏通常采用镜面液晶等离子显示屏, 通过在显示屏外增加镀膜玻 璃或塑料板来实现镜面效果。但上述结构具有背景技术中提及的各种缺陷, 除此之外, 上述结构还具有以下缺陷:
1、 由于强度要求,玻璃或塑料板的尺寸越大,要求厚度越厚,从而造成重量较大。 2、 由于尺寸大, 平整度很难保证, 容易内凹或外凸, 形成哈哈镜效果。 根据本申请的实施例二的 LED显示装置 (图中未示出) 有效地解决了上述问题, 实施例二的 LED显示装置与上述实施例的区别在于第二侧的结构。在实施例二中, 每 个透光罩单元具有朝向 LED显示板的第一侧和背离 LED显示板的第二侧, 第二侧呈 平面并设置有镜面半透膜。 由于粘接连接, 进而容易保证整个面罩的平整和一致。 当 LED灯不点亮时, 观看者从第二侧无法看到 LED显示板, 面罩表面形成镜面效果, 当 LED灯点亮时, 观看者能从第二侧看到 LED显示板上显示的内容。 这样, 有效地 消除了颗粒感并有效地提高了观看者的视觉体验。实施例二的技术方案使得 LED显示 装置拼接缝隙小且平整度较好, 不会出现内凹或外凸的现象。 现有技术中, 随着显示屏市场的发展, 裸眼 3D显示装置在广告展示等领域被应 用。 在现有技术中, 通过在显示屏外增加玻璃或塑料板, 并在玻璃和塑料板上贴光栅 模来实现。 但上述结构具有背景技术中提及的各种缺陷, 除此之外, 上述结构还具有 以下缺陷: 由于强度要求, 玻璃或塑料板的尺寸越大, 要求厚度越厚, 从而造成重量较大。 根据本申请的实施例三的 LED显示装置有效地解决了上述问题,实施例三的 LED 显示装置与上述实施例的区别在于第二侧的结构。 每个透光罩单元 10具有朝向 LED 显示板 1的第一侧 11和背离 LED显示板 1的第二侧 12, 如图 5和图 6所示, 第二侧 12上设置有光栅结构, 这样能够实现裸眼 3D效果。 此外, 由于粘接连接, 进而容易 保证整个面罩的平整和一致。实施例三的技术方案使得 LED显示装置拼接缝隙小且平 整度较好。 如图 5和图 6所示, 第二侧 12上设有多个平行设置的第二凹槽 17以形成光栅结 构。 优选地, 如图 6所示, 为了提高显示效果, 第二凹槽 17的横截面呈 V形。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种 LED显示装置, 其特征在于, 包括:
LED显示板 (1 );
面罩, 设置在所述 LED显示板 (1 ) 的一侧, 所述面罩包括多个透光罩单 元(10), 各所述透光罩单元(10)均与所述 LED显示板(1 )粘接, 并且, 所 述透光罩单元 (10) 和所述 LED显示板 (1 ) 之间具有定位结构以限定各所述 透光罩单元 (10) 在所述 LED显示板 (1 ) 上的粘贴位置。
2. 根据权利要求 1所述的 LED显示装置, 其特征在于, 所述 LED显示板( 1 )为 多个, 每个所述 LED显示板 (1 ) 上均粘接有多个所述透光罩单元 (10)。
3. 根据权利要求 1所述的 LED显示装置,其特征在于,每个所述透光罩单元( 10) 具有朝向所述 LED显示板 (1 ) 的第一侧 (11 ) 和背离所述 LED显示板 (1 ) 的第二侧(12), 所述第二侧(12)呈平面并设置有单向透光膜, 所述单向透光 膜沿所述第一侧 (11 ) 至所述第二侧 (12) 方向透光。
4. 根据权利要求 3所述的 LED显示装置,其特征在于,所述单向透光膜的单向透 光率大于 60%。
5. 根据权利要求 1所述的 LED显示装置,其特征在于,每个所述透光罩单元( 10) 具有朝向所述 LED显示板 (1 ) 的第一侧 (11 ) 和背离所述 LED显示板 (1 ) 的第二侧 (12), 所述第二侧 (12) 呈平面并设置有镜面半透膜。
6. 根据权利要求 1所述的 LED显示装置,其特征在于,每个所述透光罩单元( 10) 具有朝向所述 LED显示板 (1 ) 的第一侧 (11 ) 和背离所述 LED显示板 (1 ) 的第二侧 (12), 所述第二侧 (12) 上设置有光栅结构。
7. 根据权利要求 3或 5或 6所述的 LED显示装置,其特征在于,所述透光罩单元
( 10) 的材质为玻璃或者塑料。
8. 根据权利要求 1所述的 LED显示装置, 其特征在于, 所述透光罩单元( 10)上 对应所述 LED显示板 (1 ) 的各 LED灯的位置设置有与所述 LED灯形状适配 的容纳盲孔 (13 )。
9. 根据权利要求 8所述的 LED显示装置, 其特征在于, 所述透光罩单元( 10)上 对应所述 LED显示板 (1 ) 的各所述 LED灯的位置设置有凸出部 (14), 所述 凸出部(14)具有中心盲孔以形成所述容纳盲孔(13 ), 相邻的两个所述凸出部
( 14) 之间形成有第一凹槽 (15 )。
10. 根据权利要求 9所述的 LED显示装置, 其特征在于, 所述第一凹槽(15 ) 的槽 深小于所述容纳盲孔 (13 ) 的孔深。
11. 根据权利要求 1至 10中任一项所述的 LED显示装置, 其特征在于, 所述定位 结构包括:
至少两个定位孔, 设置在所述 LED显示板 (1 ) 上,
定位凸柱(16), 设置在所述透光罩单元(10)上, 并与各所述定位孔一一 对应地配合。
12. 根据权利要求 1所述的 LED显示装置, 其特征在于, 所述 LED显示板(1 )包 括灯板和设置在所述灯板上的所述 LED灯, 所述透光罩单元(10)与所述灯板 或者所述 LED灯粘接。
13. 根据权利要求 6所述的 LED显示装置, 其特征在于, 所述第二侧(12)上设有 多个平行设置的第二凹槽 (17) 以形成所述光栅结构。
14. 根据权利要求 13所述的 LED显示装置, 其特征在于, 所述第二凹槽 (17) 的 横截面呈 V形。
PCT/CN2013/084216 2013-03-14 2013-09-25 Led显示装置 WO2014139278A1 (zh)

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US9733401B2 (en) 2017-08-15
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