CN208477854U - A kind of LED digital display screen of curved-surface structure - Google Patents
A kind of LED digital display screen of curved-surface structure Download PDFInfo
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- CN208477854U CN208477854U CN201820679688.4U CN201820679688U CN208477854U CN 208477854 U CN208477854 U CN 208477854U CN 201820679688 U CN201820679688 U CN 201820679688U CN 208477854 U CN208477854 U CN 208477854U
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- plastic shell
- display screen
- digital display
- predetermined number
- diffusion barrier
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Abstract
The utility model relates to a kind of LED digital display screens of curved-surface structure, belong to field of display technology.LED digital display screen provided by the utility model passes through the LED digital display screen of abandoning tradition planar structure, according to the shape of practical electric appliance face-piece, plastic shell is designed using curved-surface structure, and it is mounted using with the institute matched diffusion barrier of plastic shell table side shape, LED digital display screen is enabled to be suitable for the electric appliance face-piece of nowadays various shapes, it has liberated electric equipment products and has obtained configuration design, so that the design diversification of electric equipment products contour structures, the design of personalization, electric equipment products shape is more in line with ergonomics；Furthermore, since the table side of LED digital display screen provided by the utility model is curved-surface structure, diffusion barrier is easy to fall off due to external force from plastic shell, therefore, the utility model is also respectively set film slot by the table side both ends in plastic shell and diffusion barrier is fixed, so that diffusion barrier is not easily to fall off, the illumination effect of LED digital display screen has greatly been ensured.
Description
Technical field
The utility model relates to field of display technology, in particular to the LED digital display screen of a kind of curved-surface structure.
Background technique
The manufacturing process of traditional LED digital display screen generallys use guide pin and goes out foot mode, by guide pin pin by light source,
PCB(Printed Circuit Board, printed circuit board) components such as plate and plastic shell are attached, the light source used
For LED die.LED crystal is bound on pcb board by staff when manufacturing LED digital display screen, through binding technique, then
LED die positive and negative anodes are connected by welding metal welding wire, the LED digital display screen finished product finally produced passes through PCB
Guide pin pin on plate is attached with appliance controling plate, as shown in Figure 1, it illustrates a kind of tradition LED digital display screens
Schematic diagram, wherein a is guide pin pin, and b is LED die, and c is plastic shell, and d is pcb board.
Inventors have found that more and more electric appliances are beautiful and stylish to pursue using the design of diversification face-piece, or more preferably
Man-computer relation experience, the display screen surface structure of traditional LED digital screen is only single plane, can not be with diversified design
Electric appliance face-piece matches, to limit the design for aesthetic of electric equipment products contour structures, the design of electric equipment products shape can not be accorded with
Close ergonomics.
Summary of the invention
In order to solve the problems existing in the prior art, the utility model provides a kind of LED digital display screen of curved-surface structure.
The technical solution is as follows:
The one side of the utility model embodiment provides a kind of LED digital display screen of curved-surface structure, the LED number
Code display screen includes pcb board, the Surface-mount LED lamp of predetermined number, plastic shell and diffusion barrier, and the pcb board includes according to default
Track is set to the LED pad of the predetermined number on the pcb board, and the LED pad of the predetermined number passes through on the pcb board
Route be correspondingly connected with patch type leg, the pcb board is additionally provided with the location hole of contact pin pin and predetermined number；
The Surface-mount LED lamp of the predetermined number passes through corresponding described default be mounted on the pcb board of welding manner
On several LED pads；
The table side shape of the plastic shell is in curved surface, and the table side of the plastic shell is inwardly provided in desired guiding trajectory
The bottom accent center of the reflection cavity of the predetermined number of arrangement, each reflection cavity corresponds at least one Surface-mount LED lamp, described
The back side of plastic shell is provided with the positioning column of predetermined number, and the positioning column of the predetermined number is respectively and on the pcb board
The predetermined number location hole align riveted；
The diffusion barrier has the shape to match with the plastic shell table side shape, and the diffusion barrier is tight by glue
It is closely connected together in the plastic shell table side, and on the diffusion barrier predetermined number diaphragm pattern respectively and on the plastic shell
The reflection cavity of the predetermined number is corresponding.
In a preferred embodiment, the table side both ends of the plastic shell are respectively arranged with film slot, the film slot
Notch direction and the curved surface radian at plastic shell table side both ends are tangent, and the both ends of the diffusion barrier are embedded in the film slot.
In a preferred embodiment, the diffusion barrier outer layer is additionally provided with the protective film that can be traded in, the protective film
Packet ontology is made of 4H Surface hardened layer scratch resistant layer and PET transparent polyester film layer.
In a preferred embodiment, the curved surface is symmetrical arc or asymmetrical arc.
In a preferred embodiment, for each reflection cavity on the plastic shell, the reflection cavity shape is
Funnel-form or trapezoidal shape, and the upper accent size of the reflection cavity is greater than lower accent size.
In a preferred embodiment, the region silk-screen on the diffusion barrier in addition to the diaphragm pattern of the predetermined number
There is black ink layer, and the black ink layer is between the diffusion barrier membrane body and the glue.
In a preferred embodiment, location hole and the plastic shell that the pcb board passes through the predetermined number
The positioning column of the predetermined number of back side is tightly engaged into a manner of punching press or hot pressing.
The technical solution that the embodiments of the present invention provide can include the following benefits:
The LED digital display screen of curved-surface structure provided by the utility model includes: the LED patch of pcb board, predetermined number
Lamp, plastic shell and diffusion barrier, pcb board include the LED pad for the predetermined number being set on pcb board according to desired guiding trajectory, in advance
If the LED pad of number is correspondingly connected with by the route on pcb board with patch type leg, pcb board be additionally provided with contact pin pin and
The location hole of predetermined number；The Surface-mount LED lamp of predetermined number passes through the corresponding predetermined number being mounted on pcb board of welding manner
On LED pad；The table side shape of plastic shell is in curved surface, and the table side of plastic shell is inwardly provided in desired guiding trajectory arrangement
The bottom accent center of the reflection cavity of predetermined number, each reflection cavity corresponds at least one Surface-mount LED lamp, plastic shell
Back side is provided with the positioning column of predetermined number, and the positioning column of the predetermined number location hole with the predetermined number on pcb board respectively
Align riveted；Diffusion barrier has the shape to match with plastic shell table side shape, and diffusion barrier is fitted closely by glue in modeling
Glue shell table side, and on diffusion barrier predetermined number diaphragm pattern it is corresponding with the reflection cavity of predetermined number on plastic shell respectively.
The utility model is by the LED digital display screen of abandoning tradition planar structure, according to the shape of practical electric appliance face-piece,
It designs plastic shell using curved-surface structure, and is mounted using with the institute matched diffusion barrier of plastic shell table side shape, made
The electric appliance face-piece that LED digital display screen can be suitable for nowadays various shapes is obtained, electric equipment products has been liberated and obtain configuration design, make
The design diversification of electric equipment products contour structures is obtained, personalized, the design of electric equipment products shape is more in line with ergonomics；This
Outside, since the table side of LED digital display screen provided by the utility model is curved-surface structure, diffusion barrier is easy to due to external force
It falls off from plastic shell, therefore, also film slot is respectively set to diffusion barrier by the table side both ends in plastic shell in the utility model
It is fixed, so that diffusion barrier is not easily to fall off, has greatly ensured the illumination effect of LED digital display screen.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Utility model.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the embodiment for meeting this,
And it is used to explain the principles of the present invention together in specification.
Fig. 1 shows a kind of schematic diagram of tradition LED digital display screen.
Fig. 2 shows a kind of schematic diagrames of the LED digital display screen of curved-surface structure provided by the embodiment of the utility model.
Fig. 3 shows a kind of attachment schematic diagram of Surface-mount LED lamp provided by the embodiment of the utility model.
Fig. 4 shows a kind of main view of pcb board provided by the embodiment of the utility model.
Fig. 5 shows a kind of side view of pcb board provided by the embodiment of the utility model.
Fig. 6 shows a kind of top view of pcb board provided by the embodiment of the utility model.
Fig. 7 shows a kind of main view of plastic shell provided by the embodiment of the utility model.
Fig. 8 shows a kind of side view of plastic shell provided by the embodiment of the utility model.
Fig. 9 shows a kind of rearview of plastic shell provided by the embodiment of the utility model.
Figure 10 shows a kind of side view of diffusion barrier provided by the embodiment of the utility model.
Figure 11 shows the schematic diagram of another plastic shell provided by the embodiment of the utility model.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The consistent embodiment of some aspects be described in detail in the appended claims, the utility model.
As shown in Fig. 2, it illustrates a kind of LED digital display screens of curved-surface structure provided by the embodiment of the utility model
Schematic diagram, the LED digital display screen include:
Pcb board 10, the Surface-mount LED lamp 20 of predetermined number, plastic shell 30 and diffusion barrier 40, the pcb board 10 include pressing
The LED pad 11 of the predetermined number on the pcb board 10 is set to according to desired guiding trajectory, the LED pad 11 of the predetermined number is logical
The route crossed on the pcb board 10 is correspondingly connected with patch type leg 12, and the pcb board 10 is additionally provided with contact pin pin 13 and pre-
If the location hole 14 of number.
It should be noted that contact pin pin 13 is suitble to LED patch for connecting external drive circuit or external power supply, to obtain
Piece lamp 20 works normally required voltage, so that Surface-mount LED lamp 20 shines respectively according to actual requirements.
The Surface-mount LED lamp 20 of the predetermined number is mounted on described pre- on the pcb board 10 by welding manner correspondence
If on the LED pad 11 of number.
When assembling the LED digital display screen of curved-surface structure provided by the utility model, staff can paste by LED
After the attachment to pcb board 10 of piece lamp 20, welded with dedicated test fixture by the patch type on pcb board 10 using computer test machine
Voltage is supplied pcb board 10 by foot 12, so that the bonded LED lamp on pcb board 10 shines, to detect Surface-mount LED lamp 20
Electrical property quality.
As shown in figure 3, it illustrates a kind of attachment schematic diagrames of Surface-mount LED lamp 20 provided by the embodiment of the utility model.
In order to be better described curved-surface structure provided by the utility model LED digital display screen pcb board 10, spy shows
Fig. 4, Fig. 5, Fig. 6.
As shown in figure 4, it illustrates a kind of main views of pcb board provided by the embodiment of the utility model.
As shown in figure 5, it illustrates a kind of side views of pcb board provided by the embodiment of the utility model.
As shown in fig. 6, it illustrates a kind of top views of pcb board provided by the embodiment of the utility model.
Wherein, the table side shape of plastic shell 30 is in curved surface, and the table side of plastic shell 30 is inwardly provided in default rail
The reflection cavity 31 of the predetermined number of mark arrangement, the bottom accent center of each reflection cavity 31 corresponds at least one LED patch
Lamp 20, the back side of plastic shell 30 are provided with the positioning column 32 of predetermined number, and the positioning column 32 of the predetermined number respectively with
The location hole 14 of the predetermined number on the pcb board 10 aligns riveted.
Compared to the plastic shell 30 of traditional LED display, the radian on 30 surface of plastic shell provided by the utility model
It can be designed according to the shape of electric appliance face-piece, carry out perfect closely combination with electric appliance face-piece, reach optimal luminescence display
Effect, such electric appliance face-piece design just can have more intention, and electric equipment products shape is made to have more aesthetics, and no longer by
The limitation of the Plane Installation structure of traditional LED digital display screen solves traditional LED digital display screen because of planar structure and electric appliance
Arc face-piece mismatch and influence illumination effect, influence the ergonomic design of electric equipment products, lead to electric appliance configuration design
Can not diversification, personalized problem.
It should be noted that the corresponding Surface-mount LED lamp 20 in the bottom accent center of reflection cavity 31, can make this
Utility model embodiment provide LED digital display screen at work, Surface-mount LED lamp 20 issue light can more uniformly from
Reflection cavity 31 exhales.
In order to be better described curved-surface structure provided by the utility model LED digital display screen plastic shell 30, it is special
Fig. 7, Fig. 8 and Fig. 9 are shown.
As shown in fig. 7, it illustrates a kind of main views of plastic shell 30 provided by the embodiment of the utility model.
As shown in figure 8, it illustrates a kind of side views of plastic shell 30 provided by the embodiment of the utility model.
As shown in figure 9, it illustrates a kind of rearviews of plastic shell 30 provided by the embodiment of the utility model.
The diffusion barrier 40 has the shape to match with the 30 table side shape of plastic shell, and the diffusion barrier 40 passes through
Glue is fitted closely in 30 table side of plastic shell, and on the diffusion barrier 40 predetermined number diaphragm pattern respectively with it is described
The reflection cavity 31 of the predetermined number is corresponding on plastic shell 30.
Diffusion barrier 40 is to be obtained according to the curved surface radian on 30 surface of plastic shell using dedicated stamping jig is stamping,
So that diffusion barrier 40 can be fitted closely with plastic shell 30.
As shown in Figure 10, it illustrates a kind of side view of diffusion barrier 40 provided by the embodiment of the utility model, Tu10Suo
40 shape of diffusion barrier shown matches with 30 table side shape of plastic shell shown in Fig. 7.
It should be noted that the plastic shell 30 of the LED digital display screen due to curved-surface structure provided by the utility model
Surface is curved surface, and diffusion barrier 40 is after being mounted on 30 surface of plastic shell, it is easy to lead to diffusion barrier 40 due to external force
It falls off from plastic shell 30.
To solve the problems, such as that diffusion barrier 40 is caducous, in a preferred embodiment, plastic cement provided by the utility model
The table side both ends of shell 30 are respectively arranged with film slot 33, the notch direction of the film slot 33 and the 30 table side both ends of plastic shell
Curved surface radian it is tangent, the both ends of the diffusion barrier 40 are embedded in the film slot 33, as shown in figure 11.
Since the notch direction of film slot 33 and the curved surface radian at 30 table side both ends of plastic shell are tangent, diffusion barrier 40
Both ends insertion film slot 33 after, if encountering external force, external force suffered by diffusion barrier 40 can reach diffusion barrier 40 via membrane body surface
Both ends, since 40 both ends envelope slot 33 of diffusion barrier securely fixes, diffusion barrier 40 can not be removed from plastic shell 30, to ensure that
The compactness of diffusion barrier 40 and plastic shell 30 prevents diffusion barrier 40 to be affected the diffusion effect of light.
In a preferred embodiment, 40 outer layer of diffusion barrier is additionally provided with the protective film that can be traded in, the protection
Film packet ontology is made of 4H Surface hardened layer scratch resistant layer and PET transparent polyester film layer.
The setting of protective film can further protect the screen body of LED digital display screen, reduce the damage that diffusion barrier 40 is subject to.Its
In, 4H Surface hardened layer scratch resistant layer ensure that the hardness of protective film, PET transparent polyester film layer ensure that the translucency and bullet of protective film
Property.
In a preferred embodiment, the curved surface is symmetrical arc or asymmetrical arc.
The shape of 30 table side of plastic shell can install the casing for electric appliances shape design of LED digital display screen as needed, and
It is obtained using film tool moulding.
In a preferred embodiment, for each reflection cavity 31 on the plastic shell 30, the reflection cavity 31
Shape is funnel-form or trapezoidal shape, and the upper accent size of the reflection cavity 31 is greater than lower accent size.
Since 31 shape of reflection cavity is funnel-form or trapezoidal shape, and the upper accent size of reflection cavity 31 is greater than lower accent ruler
It is very little so that reflection cavity 31 can more effectively assemble Surface-mount LED lamp 20 sending light and by funnel-form or trapezoidal shape it is anti-
It penetrates chamber 31 to reflect away, improves the luminous mass of LED digital display screen.
By reflection cavity 31, the light of Surface-mount LED lamp 20 can come out from 31 bottom reflection of reflection cavity, so that reflection cavity 31
The diaphragm pattern of the shape of surface accent position or the corresponding accent position of the diffusion barrier 40 for being affixed on 31 surface of reflection cavity is easier body
Reveal and.And the material of diffusion barrier 40 has diffused and light transmittance is high, but also LED digital display screen energy uniform display goes out to need
Image to be shown.
It should be noted that the shape of 31 surface accent position of reflection cavity and the diaphragm pattern phase on corresponding diffusion barrier 40
It is same or similar, so that the better effect of LED display display pattern.
In a preferred embodiment, the region silk on the diffusion barrier 40 in addition to the diaphragm pattern of the predetermined number
It is printed on black ink layer, and the black ink layer is between 40 membrane body of diffusion barrier and the glue.
In region silk-screen black ink layer of the diffusion barrier 40 in addition to diaphragm pattern, Surface-mount LED lamp 20 can be made to issue
Light be only capable of exhaling through diaphragm pattern, also avoid the generation of the astigmatism phenomenon of LED display.
In a preferred embodiment, location hole 14 and the plastic cement that the pcb board 10 passes through the predetermined number
The positioning column 32 of the predetermined number of 30 back side of shell is tightly engaged into a manner of punching press or hot pressing.
In conclusion the LED digital display screen of curved-surface structure provided by the utility model passes through abandoning tradition planar structure
LED digital display screen plastic shell is designed using curved-surface structure according to the shape of practical electric appliance face-piece, and using and institute
The matched diffusion barrier of plastic shell table side shape is mounted, and enables LED digital display screen to be suitable for nowadays shape more
The electric appliance face-piece of sample, has liberated electric equipment products and has obtained configuration design, so that the design diversification of electric equipment products contour structures, individual character
Change, the design of electric equipment products shape is more in line with ergonomics；Further, since LED digital-scroll technique provided by the utility model
The table side of screen is curved-surface structure, and diffusion barrier is easy to fall off due to external force from plastic shell, and therefore, the utility model is also logical
It crosses the table side both ends in plastic shell film slot is respectively set and diffusion barrier is fixed, so that diffusion barrier is not easily to fall off, greatly protect
The illumination effect of LED digital display screen is hindered.
Light source of the utility model embodiment by using Surface-mount LED lamp as LED digital display screen, due to LED patch
Lamp is without stitch, it is only necessary to which welding can be mounted on the fixation that LED light source is completed on the LED pad of pcb board, so that being not required in reflection cavity
It reuses encapsulating glue to protect the stitch of LED light source, so that the process for saving LED digital display screen, improves
The processing efficiency of LED digital display screen.Relative to traditional stitch LED charactrons, the utility model also eliminate perforating needle,
It is digital to solve prior art manufacture LED to simplify production link for the techniques such as LED die binding, welding wire welding and encapsulating
Production technology needed for display screen is more lengthy and jumbled, and production efficiency is lower, production cost also higher problem, has reached reduction production
The effect of production efficiency is greatly improved in cost；The utility model uses patch type pad, eliminates stitch, so that LED number is aobvious
The welding process of display screen is easier, and the selection for carrying out the designing wiring of circuit on pcb board for staff is also more diversified
With it is flexible；Since the utility model is not needed using encapsulating glue, also without stitch, the structure of LED digital display screen can be non-
Often frivolous, suitable for compact-sized, extra-thin product, what the thickness for solving LED digital display screen was easy to be restricted is asked
Topic.
For the utility model is better described, spy shows the technical process of the utility model: firstly, in LED digital screen
Surface-mount LED lamp is mounted on PCB SMD lamp pad, dedicated test fixture is reused and electricity is carried out to the pcb board for posting Surface-mount LED lamp
Then the plastic shell of the pcb board tested and LED digital screen is passed through location hole on positioning column and pcb board by performance detection
It is fixed with pressing, plastic shell is made to combine closely with pcb board；Each Surface-mount LED lamp is placed in plastic shell reflection cavity bottom after pressing
The center of portion's accent, it is uniform to guarantee to shine；After carrying out the process for pressing of pcb board 10 and plastic shell 30, work people
Member can carry out second of test, continue to use computer test machine, with dedicated test fixture, pass through the patch type on pcb board
Voltage is supplied pcb board by leg, so that the bonded LED lamp on pcb board shines, detects the electrical property of Surface-mount LED lamp again
The diffusion barrier that stamping shapes finally is affixed on the plastic shell surface for assembling pcb board, makes the diaphragm on diffusion barrier by the quality of energy
Pattern and the surface accent of plastic shell are accurately corresponding, when the LED digital screen of curved-surface structure passes through driving circuit or external electricity
When source supplies suitable voltage, Surface-mount LED lamp emits beam, and the number of display can be uniformly indicated a need for when through diffusion barrier
Word and pattern.
Those skilled in the art will readily occur to the utility model after considering the invention of specification and practice here
Other embodiments.This application is intended to cover this any variations, uses, or adaptations, these modifications, purposes or
Adaptive change follow this general principle and including the undocumented common knowledge in the art of the utility model or
Conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the utility model are by following
Claim point out.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
It asks to limit.
Claims (7)
1. a kind of LED digital display screen of curved-surface structure, the LED digital display screen includes the LED patch of pcb board, predetermined number
Piece lamp, plastic shell and diffusion barrier, it is characterised in that:
The pcb board includes the LED pad for the predetermined number being set on the pcb board according to desired guiding trajectory, and described default
Several LED pads is correspondingly connected with by the route on the pcb board with patch type leg, and the pcb board is additionally provided with contact pin and draws
The location hole of foot and predetermined number；
The Surface-mount LED lamp of the predetermined number passes through the corresponding predetermined number being mounted on the pcb board of welding manner
On LED pad；
The table side shape of the plastic shell is in curved surface, and the table side of the plastic shell is inwardly provided with and arranges in desired guiding trajectory
Predetermined number reflection cavity, the bottom accent center of each reflection cavity corresponds at least one Surface-mount LED lamp, the plastic cement
The back side of shell is provided with the positioning column of predetermined number, and the positioning column of the predetermined number respectively with the institute on the pcb board
State the location hole contraposition riveted of predetermined number；
The diffusion barrier has the shape to match with the plastic shell table side shape, and the diffusion barrier is closely pasted by glue
Together in the plastic shell table side, and on the diffusion barrier predetermined number diaphragm pattern respectively with it is described on the plastic shell
The reflection cavity of predetermined number is corresponding.
2. LED digital display screen according to claim 1, which is characterized in that distinguish at the table side both ends of the plastic shell
It is provided with film slot, the notch direction of the film slot and the curved surface radian at plastic shell table side both ends are tangent, the diffusion barrier
Both ends be embedded in the film slot.
3. LED digital display screen according to claim 1, which is characterized in that the diffusion barrier outer layer is additionally provided with and can paste
The protective film changed, the protective film packet ontology are made of 4H Surface hardened layer scratch resistant layer and PET transparent polyester film layer.
4. LED digital display screen according to claim 1, which is characterized in that the curved surface is symmetrical arc or non-right
The arc of title.
5. LED digital display screen according to claim 1, which is characterized in that for anti-each of on the plastic shell
Chamber is penetrated, the reflection cavity shape is funnel-form or trapezoidal shape, and the upper accent size of the reflection cavity is greater than lower accent size.
6. LED digital display screen according to claim 1, which is characterized in that remove the predetermined number on the diffusion barrier
Diaphragm pattern outside region silk-screen have black ink layer, and the black ink layer is located at the diffusion barrier membrane body and the glue
Between water.
7. LED digital display screen according to claim 1, which is characterized in that the pcb board passes through the predetermined number
The positioning column of location hole and the predetermined number of the plastic shell back side is tightly engaged into a manner of punching press or hot pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820679688.4U CN208477854U (en) | 2018-12-17 | 2018-12-17 | A kind of LED digital display screen of curved-surface structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820679688.4U CN208477854U (en) | 2018-12-17 | 2018-12-17 | A kind of LED digital display screen of curved-surface structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208477854U true CN208477854U (en) | 2019-02-05 |
Family
ID=65220758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820679688.4U Expired - Fee Related CN208477854U (en) | 2018-12-17 | 2018-12-17 | A kind of LED digital display screen of curved-surface structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208477854U (en) |
-
2018
- 2018-12-17 CN CN201820679688.4U patent/CN208477854U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20190205 Termination date: 20211217 |