CN201194154Y - Dynamic display screen using persistence of vision - Google Patents
Dynamic display screen using persistence of vision Download PDFInfo
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- CN201194154Y CN201194154Y CNU200820005267XU CN200820005267U CN201194154Y CN 201194154 Y CN201194154 Y CN 201194154Y CN U200820005267X U CNU200820005267X U CN U200820005267XU CN 200820005267 U CN200820005267 U CN 200820005267U CN 201194154 Y CN201194154 Y CN 201194154Y
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- 230000002688 persistence Effects 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000000712 assembly Effects 0.000 claims description 22
- 238000000429 assembly Methods 0.000 claims description 22
- 238000004020 luminiscence type Methods 0.000 description 31
- 230000000694 effects Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004069 differentiation Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 206010047571 Visual impairment Diseases 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
The utility model discloses an application persistence of vision phenomenon's dynamic display screen, including: at least one slide rail; the reciprocating frame is arranged on the slide rail and is provided with a sliding component which can be arranged on the slide rail in a sliding way, at least one dynamic pixel unit is arranged on the sliding component, the dynamic pixel unit is arranged on the sliding component, and each dynamic pixel unit is provided with a plurality of light-emitting components and has a proper distance with the adjacent dynamic pixel unit; a linkage mechanism connected to the reciprocating frame for reciprocating the reciprocating frame along the slide rail; a control device connected to and controlling the light emitting manner of the light emitting components disposed on each dynamic pixel unit. The dynamic display screen using the persistence of vision of the present invention can display complete patterns or animation when in use, and can be easily manufactured into a rectangular plane.
Description
Technical field
The utility model relates to a kind of dynamic display screen curtain that uses the persistence of vision phenomenon, particularly relates to a kind of dynamic display screen curtain that forms image retention with the utilization persistence of vision phenomenon that presents character pattern or animation.
Background technology
Existing display screen lies on the panel luminescence component such as configuration plural number such as light emitting diode or bulb and constitutes an array, by the light and shade of these luminescence components of control or color change to present pattern or animation.
Need luminescence components such as a considerable number of light emitting diode or bulb owing to form aforementioned array, make the manufacturing cost of existing display screen high; On the other hand,, improved the weight of existing luminous billboard, make it to be difficult for being provided with, and these luminescence components also can produce suitable heat, cause heat radiation and the last difficulty of maintenance owing to used numerous luminescence component.
For solving the problem of above-mentioned traditional display screen curtain, so the existing display screen of putting down in writing such as No. 475760 communique of the novel bulletin of Taiwan patent, M272176 number novel patent of No. 563869 communique and Taiwan of the novel bulletin of Taiwan patent is arranged, the afterimage effect that it all uses human visual system makes a spot of luminescence component fast moving and presents the display screen of disc or cylindrical so.
Yet general display screen product system is large with the display screen on rectangle and plane, and flat-paneled display screens also meet most consumer's use habit.Only look into all limited its of existing display screen of taking off the utilization afterimage effect and move the method for luminescence component and can't present the rectangle plane display screen, do not meet consumer's use habit, weakened on market competitive power the traditional display screen curtain.
Summary of the invention
The utility model is finished in order to solve deficiency of the prior art, the purpose of this utility model provides and a kind ofly can present complete pattern or animation in use, and can be made into the dynamic display screen curtain of utilization persistence of vision phenomenon of the form of rectangle plane easily.
The dynamic display screen curtain of utilization persistence of vision phenomenon of the present utility model includes:
Include:
At least one slide rail;
One reciprocal frame, system is arranged on the described slide rail, it has the slide assemblies that is mounted slidably on described slide rail, on described slide assemblies, be provided with at least one dynamic picture element unit, described dynamic picture element unary system is located on the described slide assemblies, each dynamic picture element unit be provided with plural luminescence component and with adjacent dynamic picture element unit at a distance of suitable distance;
One interlinked mechanism is to be linked to described reciprocal frame, reciprocatingly slides along described slide rail to make described reciprocal frame;
One control device is the illumination mode that connects and control set luminescence component on described each dynamic picture element unit.
The dynamic display screen curtain of utilization persistence of vision phenomenon of the present utility model, have the following advantages with respect to prior art: since between aforementioned adjacent dynamic picture element unit at a distance of a suitable distance, and make aforementioned interlinked mechanism drive reciprocal frame and slide and allow aforementioned luminescence component produce afterimage effect, therefore can present complete pattern or animation in use by the human vision persistence characteristic along slide rail; More, therefore can be made into the form of rectangle plane easily because the reciprocal frame of this creation structure is to slide along parallel slide rail.
The dynamic display screen curtain of utilization persistence of vision phenomenon of the present utility model uses the luminescence component that is less than the traditional display screen curtain, and reached the effect that the traditional display screen curtain can be showed, effectively reduce the quantity of luminescence component, can improve the traditional display screen curtain and be difficult for being provided with, being difficult to shortcomings such as heat radiation and maintenance, and because it has said structure, so can be made into the form of square planar easily, thereby solve the problem of existing display screen.
Description of drawings
Fig. 1 is the stereographic map of the utility model first embodiment.
Fig. 2 is the exploded perspective view of the utility model first embodiment.
Fig. 3 is the use diagrammatic side view of the utility model first embodiment in reciprocating stroke.
Fig. 4 is the use diagrammatic side view of the utility model first embodiment in reciprocating stroke.
Fig. 5 is the use diagrammatic side view of the utility model first embodiment in reciprocating stroke.
Fig. 6 is the use diagrammatic side view of the utility model first embodiment.
Fig. 7 is the stereographic map of the utility model second embodiment.
Fig. 8 is the side view of the utility model second embodiment.
Fig. 9 is the stereographic map of the utility model the 3rd embodiment.
Figure 10 is the stereographic map of the utility model the 4th embodiment.
The figure number explanation
The reciprocal frame of 10---slide rail 10C---slide rail 20---
The reciprocal frame 21---of 20C---slide assemblies 21C---slide assemblies
The dynamic picture element of 22---unit 221---luminescence component 222---long slab
The contrary reciprocal frame of direction of the contrary reciprocal frame 30C---of direction of 223---articulated part 30---
The dynamic picture element of 31---slide assemblies 31C---slide assemblies 32---unit
321---luminescence component 323---articulated part 40---interlinked mechanism
40A---interlinked mechanism 40C---interlinked mechanism 41---motor
42---runner assembly 421---connecting rod 42A---driving gear
The passive connecting rod 47---rotation of 46---driven gear 461---connecting plate
The 471---slotted hole
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Specific embodiment one
See also Fig. 1 and Fig. 2, disclose the stereographic map and the side view of the dynamic display screen curtain specific embodiment one that the utility model utilization persistence of vision phenomenon is arranged respectively.
The dynamic display screen curtain specific embodiment one of utilization persistence of vision phenomenon of the present utility model includes two slide rails, 10, one reciprocal frame 20, an interlinked mechanism 40, a control device (not shown).
Aforementioned two slide rails 10 are to be arranged in parallel.It can form square rail or circular rail, and possesses smooth surface for slip.
Aforementioned reciprocal frame 20 is to be arranged between aforementioned two slide rails 10.Aforementioned reciprocal frame 20 has two slide assemblies 21.This two slide assemblies 21 is to be mounted slidably respectively on the slide of aforementioned two slide rails 10.Between aforementioned two slide assemblies 21, be provided with at least one shaft-like dynamic picture element unit 22, the two ends of this dynamic picture element unit 22 are divided on aforementioned two slide assemblies 21, and each dynamic picture element unit 22 is provided with plural luminescence component 221.
Aforementioned dynamic picture element unit 22 can be the strip body of rod, and has suitable distance between itself and the adjacent dynamic picture element unit 22.Aforementioned suitable distance be can cooperate required performance such as visual effects such as resolution adjustment person in addition.When needs present careful picture, can shorten the distance between the adjacent dynamic picture element unit 22; On the contrary, if present the picture of low resolution, then can elongate the distance between the adjacent dynamic picture element unit 22.
A kind of concrete structure system of aforementioned luminescence component 221 on aforementioned dynamic picture element unit 22 that be provided with makes aforementioned luminescence component 221 be disposed at earlier on the long slab 222, this long slab 222 is incorporated into the front of aforementioned dynamic picture element unit 22 again.
Aforementioned control device system in order to connect and control aforementioned luminescence component 221 light sequential and illumination mode.But the control device that this control device can be an electronic control circuit or constituted such as program equipment such as computing machines.Use the slip that cooperates aforementioned reciprocal frame 20 and the illumination mode of controlling aforementioned luminescence component 221.Wherein the reciprocating stroke differentiation that an enforcement aspect system that can adopt should reciprocal frame 20 is defined as plural phase place (phase), and then controls light and shade or the color that each luminescence component 221 is showed when each phase place with aforementioned control device.
The differentiation definition mode system of aforementioned phase place can cooperate being adjusted such as visual effects such as resolution of required performance.When needs present careful picture, can in reciprocating stroke, distinguish the more phase place of definition; On the contrary, if present the picture of low resolution, then can in reciprocating stroke, distinguish the less phase place of definition.
Aforementioned interlinked mechanism 40 is to be linked to aforementioned reciprocal frame 20, reciprocatingly slides along aforementioned slide rail 10 to make aforementioned reciprocal frame 20.Can adopt such as motor 41 power machines such as grade and constitute this interlinked mechanism 40 to reach above-mentioned effect.
Adopting motor 41 to constitute in the enforcement aspect of aforementioned interlinked mechanism 40, be to make aforementioned interlinked mechanism 40 include a motor 41, a runner assembly 42 and a connecting rod 421.Wherein, this runner assembly 42 can form a rotating disk or a gear, is directly or indirectly to be linked on the axle center of aforementioned motor 41, and has a rotating shaft (not label).Form at this runner assembly 42 under the enforcement aspect of a rotating disk, the edge that can make this rotating disk have a circle, and its rotating shaft system is positioned at its central portion and rotates from the driving of aforementioned motor 41 accepting.
One of aforementioned connecting rod 421 end system is hubbed between the rotating shaft and edge (not label) of this runner assembly 42, and end system is hubbed on the aforementioned reciprocal frame 20 in addition.A kind of aforementioned connecting rod 421 that is pivoted makes one of aforementioned connecting rod 421 end be hubbed on the dynamic picture element unit 22 of aforementioned reciprocal frame 20 in the system of the method on the aforementioned reciprocal frame 20, the back side that its concrete structure lies in the dynamic picture element unit 22 of aforementioned reciprocal frame 20 is provided with an articulated part 223, then is formed with the hole (not label) that is pivoted on one of aforementioned connecting rod 421 end.Close aforementioned articulated part 223 and the hole that is pivoted (not label) by pivot, one of aforementioned connecting rod 421 end can be hubbed on this dynamic picture element unit 22.Utilize aforementioned interlinked mechanism 40 can make reciprocal frame 20 drive each dynamic picture element unit 22 and on a specific direction, move back and forth, cooperate control device to control the lighting mode and the sequential of each dynamic picture element unit 22, can produce display frame.
Aforementioned interlinked mechanism 40 is exerted oneself at it and can be driven smoothly under the situation of aforementioned reciprocal frame 20, and its rotating speed system can cooperate being adjusted such as visual effects such as resolution of required performance.For example, when needs present careful picture, can make aforementioned motor 41 drive these runner assembly 42 high rotation speed operation; On the contrary, if present the picture of low resolution, then can make aforementioned motor 41 drive this runner assembly 42 slow-speed of revolution running.
Please cooperate and consult Fig. 3 to Fig. 5, disclose the use diagrammatic side view of dynamic display screen curtain specific embodiment one in reciprocating stroke that utilization persistence of vision phenomenon of the present utility model is arranged.
Aforementioned the enforcements aspect that constitutes interlinked mechanisms 40 with motor 41 coupler link 421 is to drive such rotation assemblies 42 with this motor 41 to rotate in use, reciprocatingly slides along aforementioned slide rail 10 making it by the aforementioned reciprocal frame 20 of aforementioned connecting rod 421 push-and-pulls again.Easy speech, the sliding mode of aforementioned slide rail 10 among reciprocating stroke is the component motion that is parallel to aforementioned slide rail 10 corresponding to 42 spinning movements of such rotation assembly.Implement in the aspect at this, if make such rotation assembly 42 rotate with constant angular velocity, when then aforementioned slide rail 10 is passed through near the reciprocating stroke two ends, will be owing to the component motion of such rotation assembly 42 rotations little and speed is slow, aforementioned slide rail 10 can be changed direction at the reciprocating stroke two ends smooth-goingly, avoid reciprocal frame 20 structure to be brought negative effect because of the impact of changing direction.
Please cooperate and consult Fig. 6, disclose the use diagrammatic side view of the dynamic display screen curtain specific embodiment one that the utility model utilization persistence of vision phenomenon is arranged.
As mentioned above, the stroke that reciprocatingly slides of this reciprocal frame 20 is defined as plural phase place by differentiation, and aforementioned Control Component is controlled aforementioned luminescence component 221 in light and shade or color that each phase place showed.Because the characteristic of human vision, therefore the light and shade of each luminescence component 221 performance in reciprocating stroke or color form image retention and are presented complete pattern or animation.
The dynamic display screen curtain of utilization persistence of vision phenomenon of the present utility model has said structure, therefore can easily make it form the form of rectangle plane.When needs present pattern or animation with the picture of large tracts of land, can be with the dynamic display screen curtain of utilization persistence of vision phenomenon of the present utility model mutually side by side constituting the picture of large tracts of land, and can put in order and the Control Component of aforementioned plural display screen with unified each display screen of control.
Specific embodiment two
See also Fig. 7 and Fig. 8, disclose the stereographic map and the side view of the dynamic display screen curtain that utilization persistence of vision phenomenon of the present utility model is arranged respectively.
The dynamic display screen curtain specific embodiment two of utilization persistence of vision phenomenon of the present utility model includes two slide rails, 10, one reciprocal frame 20, an interlinked mechanism 40A, the control device except specific embodiment one as described above, further include a contrary reciprocal frame 30 of direction, it is subjected to aforementioned interlinked mechanism 40A transmission, reciprocatingly slides along aforementioned slide rail 10 with the direction in contrast to aforementioned reciprocal frame 20.Because glide direction that should the contrary reciprocal frame 30 of direction was opposite with the glide direction of aforementioned reciprocal frame 20, the acting force of the generation when sliding of therefore can cancelling out each other and reach stationary population, prevent the effect of vibrations.
Should the contrary reciprocal frame 30 of direction be to be arranged between aforementioned two slide rails 10.The aforementioned contrary reciprocal frame 30 of direction has two slide assemblies 31.This two slide assemblies 31 is to be mounted slidably respectively on aforementioned two slide rails 10, and this each slide assemblies 31 is to form the slide that is sheathed on aforementioned slide rail 10.Between aforementioned two slide assemblies 31, be provided with at least one dynamic picture element unit 32, the two ends of this dynamic picture element unit 32 are divided on aforementioned two slide assemblies 31, each dynamic picture element unit 32 is provided with plural luminescence component 321, and each dynamic picture element unit 32 and adjacent dynamic picture element unit 32 are at a distance of suitable distance.Be provided with an articulated part 323 in the back side of the dynamic picture element unit 32 of the aforementioned contrary reciprocal frame 30 of direction again,
Among the feasible enforcement aspect of one of this specific embodiment, can make aforementioned interlinked mechanism 40A include a motor 41, a driving gear 42A, a connecting rod 421, a driven gear 46, one passive connecting rod 461.
One of aforementioned connecting rod 421 holds system to be hubbed between the rotating shaft and engaging tooth of this driving gear 42A, and end system is hubbed on the dynamic picture element unit 22 of one of aforementioned reciprocal frame 20 in addition.When the aforementioned driving gear 42A of aforementioned motor 41 drivings rotated, aforementioned connecting rod 421 made it the aforementioned reciprocal frame 20 of push-and-pull reciprocatingly slide along aforementioned slide rail 10.
Aforementioned driven gear 46 be provided with a rotating shaft (not label) and its edge not label be formed with the engaging tooth (not label) that plural number is engaged in aforementioned driving gear 42A.When aforementioned driving gear 42A is driven by aforementioned motor 41 and during rotation, aforementioned driven gear 46 will be subjected to that aforementioned driving gear 42A drives and according to the direction rotation in contrast to aforementioned driving gear 42A.
One of aforementioned passive connecting rod 461 end system is hubbed between the rotating shaft and engaging tooth of this driven gear 46, and end system is hubbed on the aforementioned reciprocal frame 20 in addition.When aforementioned motor 41 drives aforementioned driving gear 42A rotation, and aforementioned driven gear 46 is subjected to that aforementioned driving gear 42A drives and when rotating according to reverse direction thereupon, the aforementioned contrary reciprocal frame 30 of direction is subjected to aforementioned motor 41 equally and drives by the transmission of aforementioned driven gear 46 and aforementioned passive connecting rod 461, thereby reciprocatingly slides along aforementioned slide rail 10.
As mentioned above, aforementioned reciprocal frame 20 is defined as plural phase place by differentiation respectively with the stroke that reciprocatingly slides of the contrary reciprocal frame 30 of direction, and the luminescence component 321 of the aforementioned Control Component luminescence component 221 of controlling aforementioned reciprocal frame 20 and the contrary reciprocal frame 30 of direction is in light and shade or color that each phase place showed.Because the characteristic that human vision persists, therefore the light and shade of each luminescence component 221 performance in reciprocating stroke or color form image retention and are presented complete pattern or animation.
Specific embodiment three
See also Fig. 9, disclose the stereographic map of the dynamic display screen curtain specific embodiment three that utilization persistence of vision phenomenon of the present utility model is arranged.
The dynamic display screen curtain specific embodiment three of utilization persistence of vision phenomenon of the present utility model is generally to be same as aforementioned specific embodiment two, its different part is that the reciprocal frame 20C of present embodiment and the slide assemblies 21C31C system of the contrary reciprocal frame 30C of direction form pulley, and the slide rail 10C of present embodiment is provided with the slip ditch 11C that is matched with aforementioned slide assemblies 21C31C; Again, described motor 41, the runner assembly 42 that is subjected to aforementioned motor 41 transmissions, the two ends of first embodiment are hubbed at respectively the connecting rod 421 of such rotation assembly 42 and aforementioned reciprocal frame 20C except including as described above in the interlinked mechanism 40C system of present embodiment, still include a rotation connecting plate 47.
Aforementioned rotation connecting plate 47 is a microscler plate body, and its stage casing be provided with a solid portion not its two ends system of label pivot with respect to the solid portion of this axle, and its two ends system is hubbed at aforementioned reciprocal frame 20C and aforementioned on the reciprocal frame 30C of direction respectively.A kind of technological means system of the aforementioned rotation connecting plate 47 that specifically is pivoted makes aforementioned rotation connecting plate 47 wear a slotted hole 471 respectively in its side, two ends, and makes aforementioned two slotted holes 471 be sheathed on respectively on the articulated part 223 and the aforementioned contrary articulated part 323 of the reciprocal frame 30C of direction of aforementioned reciprocal frame 20C.
When using present embodiment,, can allow aforementioned reciprocal frame 20C and the aforementioned contrary reciprocal frame 30C of direction slide along aforementioned slide rail 10C by making the aforementioned slide assemblies 21C31C that forms pulley among aforementioned slip ditch 11C, slide; During when aforementioned interlinked mechanism 40C running and by such rotation assembly 42 and aforementioned connecting rod 421 transmissions, aforementioned rotation connecting plate 47 driven and relatively its solid portion of axle pivot, and make aforementioned reciprocal frame 20C carry out the purpose that reciprocating action reaches the utility model against the reciprocal frame 30C of direction with aforementioned.
Specific embodiment four
See also Figure 10, disclose the stereographic map of the dynamic display screen curtain specific embodiment four that utilization persistence of vision phenomenon of the present utility model is arranged.
The dynamic display screen curtain specific embodiment four of utilization persistence of vision phenomenon of the present utility model is generally to be same as aforementioned specific embodiment one, and it is different to be in aforementioned specific embodiment one and to include two slide rails that parallel and present embodiment only includes a slide rail 10.Except aforementioned specific embodiment one, all specific embodiments as described above two and specific embodiment three also can cooperate on the practice or use last demand to be implemented with the aspect that adopts single slide rail.
The dynamic display screen curtain of utilization persistence of vision phenomenon of the present utility model has said structure, therefore can easily make it form the form of square planar.When needs present pattern or animation with the picture of large tracts of land, can be with the display screen of a plurality of present embodiments mutually side by side constituting the picture of large tracts of land, and can put in order and the Control Component of aforementioned plural display screen with unified each display screen of control.
Concrete structure of the utility model and using method from the above, the purpose of its true attainable cost creation, form image retention presenting pattern or animation by the minority luminescence component, and can form meet consumer's use habit the rectangle plane display screen to solve the problem of existing display screen.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence of having done according to the design spirit in the utility model changes or modifies, and all should think to fall into protection domain of the present utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820005267XU CN201194154Y (en) | 2008-04-11 | 2008-04-11 | Dynamic display screen using persistence of vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820005267XU CN201194154Y (en) | 2008-04-11 | 2008-04-11 | Dynamic display screen using persistence of vision |
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| Publication Number | Publication Date |
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| CN201194154Y true CN201194154Y (en) | 2009-02-11 |
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| CNU200820005267XU Expired - Fee Related CN201194154Y (en) | 2008-04-11 | 2008-04-11 | Dynamic display screen using persistence of vision |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104394396A (en) * | 2014-09-30 | 2015-03-04 | 深圳市亿思达科技集团有限公司 | Device and method for realizing image visual depth displaying by utilizing stretching element |
| CN108711380A (en) * | 2018-05-30 | 2018-10-26 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN109166503A (en) * | 2018-10-10 | 2019-01-08 | 深圳市纷彩电子有限公司 | A method of realizing 3D dynamic LED display |
| CN112825228A (en) * | 2019-11-20 | 2021-05-21 | 李万得 | Display panel |
-
2008
- 2008-04-11 CN CNU200820005267XU patent/CN201194154Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104394396A (en) * | 2014-09-30 | 2015-03-04 | 深圳市亿思达科技集团有限公司 | Device and method for realizing image visual depth displaying by utilizing stretching element |
| CN108711380A (en) * | 2018-05-30 | 2018-10-26 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN108711380B (en) * | 2018-05-30 | 2020-11-20 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN109166503A (en) * | 2018-10-10 | 2019-01-08 | 深圳市纷彩电子有限公司 | A method of realizing 3D dynamic LED display |
| CN112825228A (en) * | 2019-11-20 | 2021-05-21 | 李万得 | Display panel |
| CN112825228B (en) * | 2019-11-20 | 2022-12-09 | 李万得 | Display panel |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20140411 |