WO2017063319A2 - 多层磁吸式前维护小间距led显示屏 - Google Patents

多层磁吸式前维护小间距led显示屏 Download PDF

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WO2017063319A2
WO2017063319A2 PCT/CN2016/072687 CN2016072687W WO2017063319A2 WO 2017063319 A2 WO2017063319 A2 WO 2017063319A2 CN 2016072687 W CN2016072687 W CN 2016072687W WO 2017063319 A2 WO2017063319 A2 WO 2017063319A2
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Prior art keywords
magnetic
module
layer
board
led display
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PCT/CN2016/072687
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English (en)
French (fr)
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WO2017063319A3 (zh
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朱斌
肖庆华
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南京洛普科技有限公司
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Priority to US15/766,834 priority Critical patent/US10249422B2/en
Publication of WO2017063319A2 publication Critical patent/WO2017063319A2/zh
Publication of WO2017063319A3 publication Critical patent/WO2017063319A3/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • 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
    • 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
    • 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
    • G09F9/3023—Segmented electronic displays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/021—Construction of PM
    • 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
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • 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
    • H05K1/144—Stacked arrangements of planar printed circuit boards
    • 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
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • 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
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • 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
    • H05K2201/04—Assemblies of printed circuits
    • H05K2201/042—Stacked spaced PCBs; Planar parts of folded flexible circuits having mounted components in between or spaced from each other
    • 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
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09372—Pads and lands
    • H05K2201/09409—Multiple rows of pads, lands, terminals or dummy patterns; Multiple rows of mounted components
    • 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/023—Stackable 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20254—Cold plates transferring heat from heat source to coolant
    • 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
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20509—Multiple-component heat spreaders; Multi-component heat-conducting support plates; Multi-component non-closed heat-conducting structures

Definitions

  • the invention relates to a small-pitch LED display screen, in particular to a multi-layer magnetic pre-maintenance small-pitch LED display screen, belonging to the technical field of LED devices.
  • LED displays have been widely used due to energy saving and environmental protection. Especially for small-pitch displays with a dot pitch of less than 3mm, the market demand is increasing due to the advantages of colorful color, high resolution, seamless stitching and super quiet.
  • the magnetic front-end maintenance small-pitch LED display at home and abroad adopts a single module to absorb, and then multiple modules are directly adsorbed on the box or the mounting member through the magnetic steel seat, in order to meet the actual assembly and disassembly needs, the magnetic attraction Smaller, after assembling into a large LED screen, the tiny offset and mutual squeezing of the magnetic module will cause the unadjustable and repaired flatness and size of the large screen during repeated maintenance.
  • Module clearance in order to avoid the small magnetic displacement of the magnetic module after installation, it is fixedly attached to the box or the mounting member, but due to its non-adjustability, it cannot be effective in practical applications.
  • the flatness and the module clearance cannot be well guaranteed.
  • the invention aims at the defects existing in the prior art, and proposes a multi-layer magnetic pre-maintenance small-pitch LED display screen, which is convenient to install, can ensure the flatness of the small-pitch LED display screen and the module gap, and can be installed and repaired on the front side. Multi-layer magnetic front maintenance small pitch LED display.
  • a multi-layer magnetic front maintenance small-pitch LED display screen including an area array driving board containing the light-emitting diodes,
  • the area of the array driving board is provided with spacers fixed at intervals, and the array driving board and the first mounting board of the central fixed iron board are fixedly connected to form a module, and the module and the second mounting board are magnetically
  • the magnetic attraction constitutes an outer magnetic structure, and the second mounting plate and the housing or the mounting member are magnetically attracted to form an inner magnetic structure; the magnetic force of the outer magnetic structure is smaller than the magnetic force of the inner magnetic structure
  • the module assembly consisting of at least two modules magnetically adsorbed on the box or the mounting member.
  • the invention is suitable for a small-pitch display with a dot pitch of less than 3 mm.
  • the module is fixed on the second mounting plate by a low-magnetic outermost magnetic structure, and the assembly and disassembly are convenient; the module assembly passes the high magnetic
  • the inner magnetic structure is fixed on the box body or the mounting member, and the installation is convenient.
  • the size of the light emitting diode is less than 2.5 mm ⁇ 2.5 mm ⁇ 2.0 mm, and the light emitting diodes are arranged and arranged to form a matrix of pixels of M rows and XN columns, wherein M and N are positive integers.
  • the module has an outer dimension of less than 700 mm X 700 mm.
  • the module is a three primary color, a double primary color or a single primary color.
  • the module is a single board, a double board or at least three boards.
  • the circuit board of the module is a single layer board, a double layer board or at least three layer boards.
  • the magnetic attraction structure layer is composed of a mounting plate disposed between the outer magnetic structure and the inner magnetic structure.
  • the mounting plate is a magnetic layer that is connected to the module and the second mounting plate via a connector with a magnetic core.
  • the invention ensures the flatness of the display screen and the module gap by adjusting the magnetic steel seat. Since the magnetic force of the outer magnetic structure is smaller than the magnetic force of the inner magnetic structure, when the module needs to be repaired, the magnet is smaller through the special suction cup of the module. The module is sucked out, and if there is a problem in the internal system, the second magnetic mounting plate can be taken out by the tool or by the force of the hand to perform the frontal maintenance.
  • the utility model has the advantages that: by setting different magnetic adsorption, the problem of small offset and extrusion of the magnetic module of the small magnetic force after installation is solved, and the unfixable adjustment caused by the module being fixed on the box body or the mounting member is solved.
  • the problem of flatness and module clearance is surprisingly easy to assemble and disassemble.
  • FIG. 1 is a schematic perspective view of an embodiment of the present invention.
  • FIG. 2 is a perspective view of the module of FIG. 1 including a light emitting diode.
  • FIG. 3 is a perspective view of the module without the light emitting diode of FIG. 1.
  • FIG. 4 is a schematic exploded view of the module assembly of FIG. 1.
  • FIG. 5 is a schematic structural view of a module assembly according to another embodiment of the present invention.
  • the structure of this embodiment is as shown in FIG. 1 to FIG. 4, a multi-layer magnetic front maintenance small-pitch LED display screen, an area array driving board 2-1 containing a light-emitting diode, and the size of the light-emitting diode 2-8 is less than 2.5 mm ⁇ 2. 5mmX2.0mm, the light-emitting diodes are arranged and arranged to form a matrix of pixels of M rows and XN columns, wherein M and N are positive integers.
  • a spacer block 2-2 is disposed around the area array driving board 2-1, and the area array driving board 2-1 and the first mounting board 2-4 of the center fixing iron board 2-3 are fixedly connected to form a module 2, and the module 2 Dimensions are less than 700mmX700mm.
  • Module 2 is a three primary color, a double primary color, or a single primary color.
  • Module 2 is a single board, a double board or at least three boards.
  • the circuit board of the module is a single layer board, a double layer board or at least three layer boards.
  • the surface of the first mounting board is lower than the surface of the module block.
  • the magnetic structure layer of the module used in this embodiment is 2 layers, and the module and the second mounting board 2-5 are magnetically attracted and equipped with a small magnetic core.
  • the connecting member 2-6 may be mounted on the second mounting plate 2-5, or may be mounted on the first mounting plate 2-4 to form an outer magnetic structure, and the long screws are fixed to the large mounting plate 2 by spacers and nuts.
  • the magnetic steel seat 2-7 with the large magnetic core is fixed to the long screw and fixed to the second mounting plate 2-5 to form the inner magnetic structure; the outer magnetic structure
  • the magnetic force is smaller than the magnetic force of the inner layer magnetic structure;
  • the module assembly composed of two modules is magnetically attracted to the (box or mounting member) 1.
  • the embodiment is suitable for a small-pitch display with a dot pitch of less than 3 mm.
  • the module is fixed on the second mounting plate by a low-magnetic outermost magnetic structure, and the assembly and disassembly are convenient; the module assembly passes the high magnetic property.
  • the inner magnetic structure is fixed on the box body or the mounting member, and the installation is convenient.
  • the structure of the embodiment is substantially the same as that of the first embodiment, except that the embodiment is a three-layer magnetic structure, that is, a mounting plate is magnetically attracted between the module and the second mounting plate. 3.
  • the mounting plate 3 is connected to the module and the second mounting plate via a connector having a magnetic core.
  • the present invention may have other embodiments.
  • the number of layers of the magnetic structure layer of the module, the placement position of the connecting member, and the magnetic attraction position of the magnetic steel seat, etc., all of which are formed by equivalent replacement or equivalent transformation, fall within the protection scope of the present invention.

Abstract

本发明涉及一种小间距LED显示屏，尤其涉及一种多层磁吸式前维护小间距LED显示屏，属于LED设备技术领域。本发明的结构包括含有发光二极管的面阵驱动板，所述面阵驱动板的四周设有间隔固定的垫块，面阵驱动板与中心固定铁板的第一安装板固连构成模块，所述模块与第二安装板经磁力吸合构成外层磁吸结构，所述第二安装板与箱体或安装构件经磁力吸合构成内层磁吸结构；所述外层磁吸结构的磁力小于内层磁吸结构的磁力；所述由箱体或安装构件上经磁力吸附至少两块模块组成的模块组件。其优点是：既解决了小磁力的磁吸式模块在安装后的微小偏移和挤压的问题，又解决了模块固定于箱体或安装构件上导致的无法调整平面度和模块间隙的问题，拆装便捷。

Description

多层磁吸式前维护小间距LED显示屏 技术领域
本发明涉及一种小间距LED显示屏，尤其涉及一种多层磁吸式前维护小间距LED显示屏，属于LED设备技术领域。
背景技术
LED显示屏由于节能环保得到了普遍应用。特别是点间距在3mm以下的小间距显示屏，因色彩艳丽、分辨率高、无缝拼接和超强静音等优点，市场需求量日益增加。目前，国内外的磁吸式前维护小间距LED显示屏是采用单个模块吸附，再将多个模块通过磁钢座直接吸附在箱体或安装构件上，为满足实际装拆需要，其磁吸力较小，在拼装成LED大屏后，磁吸式模块的微小偏移、相互挤压，均会造成大屏在维护时反复拆装带来的不可调整及修复的平整度和大小不一的模块间隙；为避免小磁力的磁吸式模块在安装后的微小偏移和挤压，而将其固定吸附于箱体或安装构件上，却由于其不可调整性，在实际应用时，不能有效地解决安装结构或安装面等相关构件带来的积累误差，也就不能很好保证平整度与模块间隙。
发明内容
本发明针对现有技术存在的缺陷，提出一种多层磁吸式前维护小间距LED显示屏，安装便捷，能保证小间距LED显示屏的平整度与模块间隙，可在正面安装和检修的多层磁吸式前维护小间距LED显示屏。
本发明通过以下技术方案解决技术问题，多层磁吸式前维护小间距LED显示屏，包括含有发光二极管的面阵驱动板，
所述面阵驱动板的四周设有间隔固定的垫块，面阵驱动板与中心固定铁板的第一安装板固连构成模块，所述模块与第二安装板经磁 力吸合构成外层磁吸结构，所述第二安装板与箱体或安装构件经磁力吸合构成内层磁吸结构；所述外层磁吸结构的磁力小于内层磁吸结构的磁力；所述由箱体或安装构件上经磁力吸附至少两块模块组成的模块组件。
本发明适用于点间距在3mm以下的小间距显示屏，采用此种结构后，模块通过低磁性的最外层磁吸结构固定在第二安装板上，装拆便捷；模块组件通过高磁性的内层磁吸结构固定在箱体或安装构件上，安装方便。
其中，所述发光二极管的尺寸小于2.5mmX2.5mmX2.0mm，所述发光二极管为排列贴装，构成一个M行XN列的像素矩阵，其中M，N均为正整数。所述模块外形尺寸小于700mmX700mm。所述模块为三基色、双基色或单基色。所述模块为单块板、双块板或至少三块板。所述模块的电路板为单层板、双层板或至少三层板。
进一步地，所述模块的磁吸结构层为N层，其中N≥2；当N＝2时，磁吸结构层由外层磁吸结构和内层磁吸结构组成，当N＞2时，磁吸结结构层由外层磁吸结构和内层磁吸结构之间设置安装板组成。安装板即为磁吸层，通过含磁芯的连接件与模块和第二安装板连接。
本发明通过调节磁钢座来保证显示屏的平面度和模块间隙，由于外层磁吸结构的磁力小于内层磁吸结构的磁力，当模块需要检修时，通过模块专用吸盘，将磁性较小的模块吸出，如内部系统出现问题，可以再通过工具或借用手的力量将磁性较大的第二安装板整体取出，即可进行正面的维护。其优点是：通过设置不同的磁力吸附，既解决了小磁力的磁吸式模块在安装后的微小偏移和挤压的问题，又解决了模块固定于箱体或安装构件上导致的无法调整平面度和模块间隙的问题，构思奇巧，拆装便捷。
附图说明
图1为本发明一个实施例的立体结构示意图。
图2为图1的含有发光二极管的模块立体示意图。
图3为图1的不含发光二极管的模块立体示意图。
图4为图1的模块组件的爆炸示意图。
图5为本发明另一个实施例的模块组件结构示意图。
具体实施方式
实施例一
本实施例的结构如图1-图4所示，多层磁吸式前维护小间距LED显示屏，含有发光二极管的面阵驱动板2-1，发光二极管2-8的尺寸小于2.5mmX2.5mmX2.0mm，发光二极管为排列贴装，构成一个M行XN列的像素矩阵，其中M，N均为正整数。面阵驱动板2-1的四周设有间隔固定的垫块2-2，面阵驱动板2-1与中心固定铁板2-3的第一安装板2-4固连构成模块2，模块2外形尺寸小于700mmX700mm。模块2为三基色、双基色或单基色。模块2为单块板、双块板或至少三块板。所述模块的电路板为单层板、双层板或至少三层板。第一安装板的板面低于模块垫块面，本实施例中采用的模块的磁吸结构层为2层，模块与第二安装板2-5经磁力吸合，装有小磁芯的连接件2-6可以装在第二安装板2-5上，也可以装在第一安装板2-4上构成外层磁吸结构，用垫片、螺母将长螺钉固定在大安装板2-5的四周，再将装有大磁芯的磁钢座2-7固定于长螺钉上而与第二安装板2-5固连，以构成内层磁吸结构；外层磁吸结构的磁力小于内层磁吸结构的磁力；由两块模块组成的模块组件经磁力吸附在(箱体或安装构件)1上。该实施例适用于点间距在3mm以下的小间距显示屏，采用此种结构后，模块通过低磁性的最外层磁吸结构固定在第二安装板上，装拆便捷；模块组件通过高磁性的内层磁吸结构固定在箱体或安装构件上，安装方便。
在拆卸模块时，只需用含有磁性的模块专用吸盘通过铁板2-3的吸力吸附于模块表面，将模块吸出，再通过工具或借用手的力量将磁性较大的第二安装板整体取出进行维修。
实施例二
如图5所示，本实施例与实施例一的结构大致相同，不同之处在于，本实施例为三层磁吸结构，即在模块和第二安装板之间经磁力吸合一块安装板3，安装板3通过含磁芯的连接件与模块和第二安装板连接。
除上述实施外，本发明还可以有其他实施方式。如模块的磁吸结构层的层数，连接件的放置位置以及磁钢座的磁吸位置等，凡采用等同替换或等效变换形成的技术方案，均落在本发明要求的保护范围。

Claims (8)

  1. 多层磁吸式前维护小间距LED显示屏，包括含有发光二极管的面阵驱动板，其特征在于：所述面阵驱动板的四周设有间隔固定的垫块，面阵驱动板与中心固定铁板的第一安装板固连构成模块，所述模块与第二安装板经磁力吸合构成外层磁吸结构，所述第二安装板与箱体或安装构件经磁力吸合构成内层磁吸结构；所述外层磁吸结构的磁力小于内层磁吸结构的磁力；所述由箱体或安装构件上经磁力吸附至少两块模块组成的模块组件。
  2. 根据权利要求1所述多层磁吸式前维护小间距LED显示屏，其特征在于：所述发光二极管的尺寸小于2.5mmX2.5mmX2.0mm，所述发光二极管为排列贴装，构成一个M行XN列的像素矩阵，其中M，N均为正整数。
  3. 根据权利要求1所述多层磁吸式前维护小间距LED显示屏，其特征在于：所述模块外形尺寸小于700mmX700mm。
  4. 根据权利要求1所述的多层磁吸式前维护小间距LED显示屏，其特征在于：所述模块为三基色、双基色或单基色。
  5. 根据权利要求1所述的多层磁吸式前维护小间距LED显示屏，其特征在于：所述模块为单块板、双块板或至少三块板。
  6. 根据权利要求1所述的多层磁吸式前维护小间距LED显示屏，其特征在于：所述模块的电路板为单层板、双层板或至少三层板。
  7. 根据权利要求1所述多层磁吸式前维护小间距LED显示屏，其特征在于：所述模块的磁吸结构层为N层，其中N≥2；当N＝2时，磁吸结构层由外层磁吸结构和内层磁吸结构组成，当N＞2时，磁吸结结构层由外层磁吸结构和内层磁吸结构之间设置安装板组成。
  8. 根据权利要求7所述多层磁吸式前维护小间距LED显示屏，其特征在于：所述安装板通过含磁芯的连接件与模块和第二安装板连接。
PCT/CN2016/072687 2015-10-14 2016-01-29 多层磁吸式前维护小间距led显示屏 WO2017063319A2 (zh)

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