CN105405367A - Grid-type LED display module - Google Patents
Grid-type LED display module Download PDFInfo
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- CN105405367A CN105405367A CN201510919715.1A CN201510919715A CN105405367A CN 105405367 A CN105405367 A CN 105405367A CN 201510919715 A CN201510919715 A CN 201510919715A CN 105405367 A CN105405367 A CN 105405367A
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- 239000000758 substrate Substances 0.000 claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 210000001364 upper extremity Anatomy 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention discloses a grid-type LED display module, which is strong in anti-wind-load capacity and is convenient and simple to install. The grid-type LED display module comprises LED light bar components which are composed of a plurality of LED light spot pixels and PCB boards (printed circuit boards); the LED light bar components, drive circuit boards and signal power input/output interface connecting plates are arranged on a substrate which is formed by integrally injection-molding a hard plastic material; a plurality of light troughs are transversely arranged in the front surface of the substrate in a mode of being spaced from each other; a ventilation grating, which is of an air vent structure, is arranged between every two adjacent light troughs; a plate mounting position and board slots are arranged on the substrate; the drive circuit boards are arranged inside the board slots; and the signal power input/output interface connecting plates are arranged inside the plate mounting position. The anti-wind-load capacity of the LED display module disclosed by the invention can be improved. Through the structures, the LED display module is not only conducive to mass production but also capable of greatly improving production efficiency and lowering production cost; and the LED display module, in the case of failures, can be integrally taken down, so as to facilitate maintenance and replacement.
Description
Technical field
The present invention relates to a kind of grid type LED and show module, particularly a kind of grid type LED that the drive circuit board of LED lamp bar, driving LED light source works and power supply, signal input output interface web joint can be arranged on one piece of substrate shows module.
Background technology
In field of LED display, LED shows grid screen to be had the characteristics such as ventilation, printing opacity because of it and is suitable for being arranged on multiple occasion, as airport, large-scale square or high-rise building hang the large LED display screen installed.
LED of the prior art shows grid screen, usually be separated by some the LED lamp bar module (comprising LED lamp circuit plate) arranged to form, be arranged on rigid support by these LED lamp bar modules according to the resolution granularity of design, be tightly connected with control system box again, be combined into the unit screen of grid type LED display, then, then by several unit screen be combined into large-scale LED display grid screen.
The LED of the sheth composition of said structure shows grid screen and has the following disadvantages:
1) because LED lamp bar is that independent separate is arranged, a LED shows grid screen then to be needed to install a lot of LED lamp bar modules, and therefore, assembly working amount is large.
2) every root LED lamp bar module all needs to be connected with control enclosure, and multiple LED lamp bar module is connected on the wire connection control box of peripheral hardware altogether, and forming unit is shielded, and therefore, connected node quantity is many.Both Structure of need was tightly connected, and also needed circuit, signal to connect simultaneously, thus, easily caused the installation quality produced because number of nodes is many, workload large to decline.
3) in actual applications, when certain LED lamp bar module breaks down, when dismounting, maintenance, installation, need relate to sealing structure to connect, electronic circuit connection etc., and node multiple faults probability strengthens, cause installation, maintenance workload large, quantity is eventful more inconvenient.
Summary of the invention
The technical problem to be solved in the present invention is to provide strong, the quick for installation easy grid type LED of a kind of ant wind load ability and shows module.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Grid type LED of the present invention shows module, comprise the LED lamp bar be made up of several LED light point pixels and pcb board, the drive circuit board of described LED lamp bar, LED lamp bar and signal power source IO interface web joint are installed on the substrate of same by hard plastic material single injection-molded, this substrate shape is cuboid, some are provided with along the extending longitudinally light trough inwardly concaved of substrate in the lateral separation, front of substrate, often be provided with between adjacent two light troughs with this light trough side by side and there is the air grid of ventilation hole structure, the dress plate position of elongated through hole is laterally provided with in the centre of this substrate, around being provided with the board slot laterally running through the madial wall of outermost light trough on substrate around this dress plate position, this board slot is close with the described light trough degree of depth and the shallow slot communicated, described drive circuit board is arranged in described board slot, described signal power source IO interface web joint is arranged in described dress plate position, the LED lamp bar arranged respectively up and down described in one of described board slot is positioned in every bar light trough, every bar LED lamp bar is connected with described drive circuit board, described drive circuit board is connected with signal control device with the electric supply installation of peripheral hardware by described interface connecting plate.
Also be provided with on the substrate and described LED lamp bar, drive circuit board and interface connecting plate can be shrouded and for once-forming and there is the face shield of functions of waterproof and dustproof, the size of face shield and substrate adaptation, position corresponding with the air grid on described substrate on face shield is set to the air regulator hole communicated with corresponding air grid, and position corresponding with the LED light point pixel in described light trough on face shield is set to can by the exposed lamp fenestra of this LED light point pixel.
Described face shield is positioned at above lamp fenestra and is provided with outward extending sunshade eaves and rhone.
Face shield surface between adjacent two described lamp fenestras is longitudinally in hackle mark.
Four peripheries of described substrate be equipped with can be adjacent with corresponding periphery another block substrate carry out the frame face of docking.
In described air grid, be provided with some swash plates along the longitudinal uniform intervals from top to bottom of substrate, every sheet swash plate extends to the back side of substrate from top to bottom from the front of substrate.
In swash plate described in adjacent two panels, the vertical range between the upper limb of declined board and the lower edge of inclined board is not less than 2mm.
Angle between described swash plate and the front of substrate is spent at 20 degree-70.
Be provided with at the back side of substrate and it accurately can be arranged on the desired location on described rigid support and the positioning pin column in the structure that stretches out.
The reference column installing fixed visors is equipped with in air grid described in substrate front side and board slot.
Compared with prior art, grid type LED of the present invention shows module by some LED lamp bar, the drive circuit board driving this LED lamp bar and power supply, signal input output interface web joint integrated installation on the substrate of one piece of dispensable mould injection mo(u)lding.The light trough of many mounted LED lamp bar assemblies is set on the substrate, air grid and the face shield of this LED display module ant wind load can be improved, the board slot of the described drive circuit board be integrated and connected for the LED lamp bar in each light trough can be installed and the dress plate position of described interface connecting plate is installed.Said structure is not only conducive to producing in enormous quantities, and can greatly enhance productivity, and reduces production cost.Simultaneously, the pcb board of all installations on the same substrate in LED lamp bar shares an IO interface, both installation workload was reduced, turn increase the reliability of product, improve product quality, and, when it breaks down, only monoblock LED need be shown module and take off convenient for maintaining replacing module.
Accompanying drawing explanation
Fig. 1 is module schematic diagram of the present invention.
Fig. 2 is substrate front plan view of the present invention.
Fig. 3 is substrate of the present invention back of the body planar view.
Fig. 4 is substrate of the present invention back of the body parallax stereogram.
Fig. 5 is face shield front perspective view of the present invention.
Fig. 6 is face shield of the present invention back of the body parallax stereogram.
Fig. 7 is A portion enlarged drawing in Fig. 2.
Fig. 8 is B portion enlarged drawing in Fig. 2.
Fig. 9 is C portion enlarged drawing in Fig. 2.
Figure 10 is D portion enlarged drawing in Fig. 3.
Figure 11 is E portion enlarged drawing in Fig. 3.
Figure 12 is F portion enlarged drawing in Fig. 3.
Figure 13 is G portion enlarged drawing in Fig. 4.
Figure 14 is H portion enlarged drawing in Fig. 4.
Figure 15 is I portion enlarged drawing in Fig. 4.
Figure 16 is M portion enlarged drawing in Fig. 5.
Figure 17 is N portion enlarged drawing in Fig. 6.
Reference numeral is as follows:
Substrate 1, frame face 11, section 12, positioning pin column 13, copper nut of the blind end 14, install fixing threaded hole 15, reference column 16, light trough 2, dress plate position 3, board slot 4, air grid 5, air vent 51, swash plate 52, sealing surface 53, screw hole column 6, laterally or oblique gusset 7, face shield 9, air regulator hole 91, lamp fenestra 92, sunshade eaves 93, hackle mark 94, rhone 95, LED light point pixel 100.
Embodiment
As shown in Fig. 1-17, it is install concentratedly on the substrate 1 of same by hard plastic material single injection-molded by the drive circuit board of LED lamp bar, LED lamp bar and power supply, signal power source IO interface web joint that grid type LED of the present invention shows module, also be provided with the face shield 9 possessing functions of waterproof and dustproof thereon, this face shield 9 is preferably by hard plastic material single injection-molded.It is cuboid that this LED shows the profile of module, and the present invention preferably this LED shows the length of module × wide × thick and is: 800mm × 200mm × 30mm.Can be shielded by component units grid by some pieces of such modules, can be spliced into large LED display grid screen.
Described substrate 1 point of front, the back side and four sides (up and down four peripheries).The front of substrate 1 is provided with light trough 2, air grid 5, dress plate position 3 and board slot 4.
Described face shield 9 is adaptive with described substrate 1, is provided with air regulator hole 91, lamp fenestra 92, sunshade eaves 93, hackle mark 94 and rhone 95 etc. thereon.
1, substrate 1
Be equipped with the frame face 11 of degree of tilt within the scope of 5 °-10 ° at four peripheries of substrate 1, frame face corresponding on another block substrate 1 that this frame face 1 can be adjacent connects.At the first half at substrate 1 back side and the waist location of Lower Half, be inlaid with the copper nut of the blind end 14 of fixed handle, this handle is convenient to operating personnel and is used when installing or removing this substrate.Outward extending positioning pin column 13 (i.e. this positioning pin column 13 vertical substrate 1 back side and stretch out backward) is also provided with at the back side of substrate 1, when this substrate 1 is arranged on described rigid support, being inserted by positioning pin column 13 is arranged in the pin-and-hole that rigid support sets, both it can have been made accurately to locate, can increase work efficiency again.
This substrate 1 is also provided with several and can be fixed in installation fixing threaded hole 15 on the rigid support of peripheral hardware.
As further improvement, be also furnished with face shield in substrate 1 front, this face shield is fixed on substrate 1 by screw and several reference columns 16 be located on substrate 1 front.
2, light trough 2
Described light trough 2 is laterally arrange at (i.e. the Width of substrate 1) interval along substrate 1, one piece of substrate 1 is provided with some, every root light trough 2 is along substrate 1 longitudinally (i.e. the length direction of substrate 1) extension, the thickness of every root light trough 2 cell wall is not less than 0.5mm, the degree of depth (i.e. the thickness direction of substrate 1) of groove is not less than 15mm, and the width of light trough 2 is not less than 5mm (suitable with LED lamp bar pcb board).The present invention is preferably: light trough 2 quantity on every block substrate 1 is 8, and the degree of depth of groove is 23mm; The width 8mm (above-mentioned size can become with the thickness of the material of module size, substrate, described cell wall) of light trough 2.The width of light trough 2 and the depth and LED lamp bar to be installed suitable.
The back side of each light trough 2 is sealing surface 53 (being conducive to the sealing of the LED lamp bar of after this installing).Be provided with some horizontal or oblique gussets 7 in the bottom of light trough 2, this gusset 7 plays reinforcement, and namely it effectively can improve the intensity of this substrate 1, guarantees the stability of light trough 2.
In light trough 2, be longitudinally interval with many screw hole columns 6 a little more than gusset 7, this screw hole column 6 is one-body molded with described gusset 7, and at screw hole column 6 end face, central authorities arrange threaded hole.
Light trough 2 is used to install the LED lamp bar to be made up of LED light source and pcb board, LED lamp bar is placed in light trough 2, with screw pcb board is fixed on the screw hole column 6 in light trough 2, LED lamp bar can be fixed in light trough 2, now, screw hole column 6 and gusset 7 all play a supporter to this LED lamp bar.
3, air grid 5
Described air grid 5 is between adjacent two light troughs 2, air grid 5 is arranged side by side with light trough 2, the width of every root air grid 5 is not less than 12mm, the present invention selects width and LED point pixel separation distance to match, i.e. LED dot spacing (horizontal spacing) in the light trough 2 of air grid 5 both sides is identical with design point spacing.
In air grid 5, longitudinally interval is evenly provided with several air vents 51, each air vent 51 is all surrounded by the grid wall of swash plate 52 setting up and down and air grid 5, every sheet swash plate 52 is the back side extending to substrate 1 from the front of substrate 1 from top to bottom, and all swash plates 52 are parallel to each other.Blank fore-and-aft distance between adjacent two panels swash plate 52 is not less than 15mm (being preferably 23mm).This structure can improve the ant wind load ability of substrate 1 greatly.
One of optimal way: in adjacent two panels swash plate 52, the upper limb of declined board 52 and the lower edge vertical interval of inclined board 52 are not more than 2mm, this structure can avoid the surround lighting at substrate 1 back side through this substrate 1 affect consisting of LED show the illumination effect of grid screen and beholder and see and simultaneously also can reach good ventilation effect by the image effect that this LED shows grid screen and plays.
Optimal way two: the angle between all swash plates 52 and the front of substrate 1 is spent at 20 degree-70.Best angle is 55 degree.
4, plate position 3 is filled
Described dress plate position 3 is arranged on the Centromedian elongated through hole of substrate 1, and this through hole, along substrate 1 horizontally set, is provided with the screw hole column 6 identical with the screw hole column 6 in light trough 2 at its periphery.The effect of this dress plate position 3 is that the signal power source IO interface web joint be connected with LED lamp bar is installed on this, plug is wherein drawn by the back side of substrate 1 by described through hole with for electric connection line, signal wire, can by screw hole column 6 fixed thereon for this interface connecting plate by screw.
5, board slot 4
Described board slot 4 is for being arranged at substrate 1 centre and be one that laterally runs through substrate 1 more shallow groove, the left and right edges of board slot 4 is extended down to the external groove sidevall (namely this board slot 4 punches the internal groove side wall of the outermost light trough 2 in the left and right sides on substrate 1) of the outermost light trough in the left and right sides 2 on substrate 1, as light trough 2, bottom this board slot 4, be also provided with horizontal or oblique gusset 7.The longitudinal length of board slot 4 is not less than 20mm, and concrete size can be determined according to the geometric shape size of pcb board design and electronic devices and components.
The effect of board slot 4 be install the LED be connected with each LED lamp bar pcb board show grid shield in LED drive circuit plate used.Equally, in board slot 4, being also provided with screw hole column 6, by being fastened on the screw on screw hole column 6, this drive circuit board can being fixed on this substrate 1.
Region shared by board slot 4 is looped around the surrounding of dress plate position 3 and described light trough 2 and air grid 5 is longitudinally divided into upper and lower two parts, and board slot 4 and light trough 2 pcb board be beneficial in light trough 2 in LED lamp bar that communicates is connected with the drive circuit board in board slot 4; Board slot 4 and air grid 5 joint are sealing surface 53, are convenient to embedding fluid sealant.
The back side of board slot 4 is the sealing that sealing surface 53 is conducive to the drive circuit board be arranged on wherein.6, the right peripheries of substrate 1
The shape that two, the left and right periphery of substrate 1 is positioned at the upper and lower in described frame face 11 is section 12 shape opened by the cutting of described air grid 5 longitudinal midline.Namely on corresponding periphery, after cutting, the width of remaining swash plate is the half of complete swash plate 52, and this structure is beneficial to joint when splicing with adjacent substrate 1 and keeps complete consistent.
7, face shield 9
1) air regulator hole 91, is arranged at position corresponding with the air grid 5 on described substrate 1 on face shield 9, and air regulator hole 91 is through hole.Its effect is that namely positive air flow flows through from front to back by the air vent 51 in air regulator hole 91, air grid 5 to the passage of wind-force one flowing impacting this module front, greatly reduces air-flow to the impact of this module.
2) lamp fenestra 92, position corresponding with the LED light point pixel 100 (i.e. the LED light source of minimum luminescence unit) in described light trough 2 on face shield 9 is arranged, it can by outside exposed for this LED light point pixel 100, and the light that LED light point pixel 100 is sent is not obstructed.
3) sunshade eaves 93, described face shield 9 is positioned at above lamp fenestra 92 and is provided with outward extending sunshade eaves 93, its effect avoids sunlight over a long time to the irradiation of LED light point pixel 100, good effect is had to the serviceable life of improving LED light point pixel 100, simultaneously, also rainwater can be avoided to be flowed between face shield 9 and substrate 1 by lamp fenestra 92 and to damage LED lamp bar and other circuit boards, rhone 95 is provided with between adjacent sunshade eaves 93, this rhone 95 can, when rainy, guide the rainwater on face shield 9 to flow down.
4) hackle mark 94, is arranged between adjacent two described lamp fenestras 92 on face shield 9 surface, and this hackle mark 94 is fluctuating corrugated on face shield 9 longitudinal direction, and its effect is gone out by the light scattering be radiated on face shield 9.
8, LED lamp bar
It is made up of with pcb board several LED light point pixels 100, and each LED light point pixel 100 is pressed longitudinal arrangement by R, G, B tri coloured lantern pearl and formed.
In the light trough 2 described in every bar, install two LED lamp bar, it lays respectively at above and below described board slot 4.Described drive circuit board is arranged in described board slot 4, and described signal power source IO interface web joint is arranged in described dress plate position 3, and every bar LED lamp bar is connected with described drive circuit board; Described drive circuit board is connected with signal control device with the electric supply installation of peripheral hardware by described interface connecting plate.
Claims (10)
1. a grid type LED shows module, comprise the LED lamp bar be made up of several LED light points pixel (100) and pcb board, it is characterized in that: the drive circuit board of described LED lamp bar, LED lamp bar and signal power source IO interface web joint are installed in same by the substrate (1) of hard plastic material single injection-molded; this substrate (1) shape is cuboid, some are provided with along the extending longitudinally light trough (2) inwardly concaved of substrate (1) in the lateral separation, front of substrate (1), often be provided with between adjacent two light troughs (2) with this light trough (2) side by side and there is the air grid (5) of air vent (51) structure, the dress plate position (3) of elongated through hole is laterally provided with in the centre of this substrate (1), the board slot (4) that the madial wall of outermost light trough (2) gone up by substrate (1) is being run through around being provided with transverse direction around this dress plate position (3), this board slot (4) is close with described light trough (2) degree of depth and the shallow slot communicated, described drive circuit board is arranged in described board slot (4), described signal power source IO interface web joint is arranged in described dress plate position (3), the LED lamp bar arranged respectively up and down described in one of described board slot (4) is positioned in every bar light trough (2), every bar LED lamp bar is connected with described drive circuit board, described drive circuit board is connected with signal control device with the electric supply installation of peripheral hardware by described interface connecting plate.
2. grid type LED according to claim 1 shows module, it is characterized in that: being also provided with on described substrate (1) can by described LED lamp bar, drive circuit board and interface connecting plate shroud and for once-forming and have the face shield (9) of functions of waterproof and dustproof, the size of face shield (9) and substrate (1) adaptation, the upper position corresponding with the air grid (5) on described substrate (1) of face shield (9) is set to the air regulator hole (91) communicated with corresponding air grid (5), the upper position corresponding with LED light point pixel (100) in described light trough (2) of face shield (9) is set to can by exposed for this LED light point pixel (100) lamp fenestra (92).
3. grid type LED according to claim 2 shows module, it is characterized in that: the top being positioned at lamp fenestra (92) on described face shield (9) is provided with outward extending sunshade eaves (93) and rhone (95).
4. grid type LED according to claim 3 shows module, it is characterized in that: face shield (9) surface between adjacent two described lamp fenestras (92) is longitudinally in hackle mark (94).
5. grid type LED according to claim 1 shows module, it is characterized in that: four peripheries of described substrate (1) be equipped with can be adjacent with corresponding periphery another block substrate (1) carry out the frame face (11) of docking.
6. the grid type LED according to any one of claim 1-5 shows module, it is characterized in that: in described air grid (5), be provided with some swash plates (52) along the longitudinal uniform intervals from top to bottom of substrate (1), every sheet swash plate (52) extends to the back side of substrate (1) from top to bottom from the front of substrate (1).
7. grid type LED according to claim 6 shows module, it is characterized in that: in the swash plate (52) described in adjacent two panels, the vertical range between the upper limb of declined board (52) and the lower edge of inclined board (52) is not less than 2mm.
8. grid type LED according to claim 7 shows module, it is characterized in that: the angle between the front of described swash plate (52) and substrate (1) is spent at 20 degree-70.
9. grid type LED according to claim 8 shows module, it is characterized in that: be provided with at the back side of substrate (1) and it accurately can be arranged on the desired location on described rigid support and the positioning pin column (13) in the structure that stretches out.
10. grid type LED according to claim 9 shows module, it is characterized in that: be equipped with the reference column (16) installing fixed visors (9) in the described air grid (5) on substrate (1) front and board slot (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919715.1A CN105405367A (en) | 2015-12-14 | 2015-12-14 | Grid-type LED display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919715.1A CN105405367A (en) | 2015-12-14 | 2015-12-14 | Grid-type LED display module |
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| CN105405367A true CN105405367A (en) | 2016-03-16 |
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| CN201510919715.1A Pending CN105405367A (en) | 2015-12-14 | 2015-12-14 | Grid-type LED display module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782120A (en) * | 2016-12-26 | 2017-05-31 | 深圳市大族元亨光电股份有限公司 | LED display modules |
| CN110021247A (en) * | 2019-03-31 | 2019-07-16 | 方迪勇 | A kind of the strip external member and light emitting module of modular lamp box |
| CN110459139A (en) * | 2019-08-13 | 2019-11-15 | 利亚德智慧显示(深圳)有限公司 | display screen |
| CN110619822A (en) * | 2019-09-20 | 2019-12-27 | 利亚德智慧显示(深圳)有限公司 | Hand-held screen |
| CN119724059A (en) * | 2025-02-27 | 2025-03-28 | 北京网格蔚来科技有限公司 | A grid display screen |
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