CN114863830A - Line screen without LED carrier plate and display device thereof - Google Patents
Line screen without LED carrier plate and display device thereof Download PDFInfo
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- CN114863830A CN114863830A CN202210309285.1A CN202210309285A CN114863830A CN 114863830 A CN114863830 A CN 114863830A CN 202210309285 A CN202210309285 A CN 202210309285A CN 114863830 A CN114863830 A CN 114863830A
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- 238000002834 transmittance Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 description 16
- 101100422614 Arabidopsis thaliana STR15 gene Proteins 0.000 description 9
- 101100141327 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RNR3 gene Proteins 0.000 description 9
- 101150112501 din1 gene Proteins 0.000 description 9
- 101100493897 Arabidopsis thaliana BGLU30 gene Proteins 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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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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Abstract
A line screen free of LED carrier plates, comprising: the LED lamp comprises a plurality of groups of flexible circuits parallel to each other and a plurality of LED luminous bodies arranged on each group of flexible circuits; for each group of flexible lines, wherein each LED luminary comprises coded information of the LED luminary; the line is a three-wire system and comprises the following three lines: the first connecting wire is used for electrically connecting the power supply anode/VCC end of each LED luminous body; the second connecting wire is used for electrically connecting the power supply cathode/GND end of each LED luminous body; the third connecting wire is used for electrically connecting the DIN end of the data signal input pin of each LED luminous body so as to provide a data signal; and each LED luminous body acquires a corresponding data signal aiming at the LED luminous body from the data signal according to the coding information of the LED luminous body. The invention can effectively reduce the total cost of the LED screen, improve the yield, and even improve the light transmittance and the current bearing capacity.
Description
Technical Field
The invention relates to the field of display, in particular to a line screen without an LED carrier plate and a display device thereof.
Background
At present, the display devices in the prior art are wide in variety, wherein the outdoor large-screen LED screen appearing in recent years gets attention of the industry and users, and even if the outdoor large-screen LED screen is hollowed out to a certain extent, a carrier board is still needed, as shown in fig. 1. In addition, screens with through holes or transparent carrier plates have also begun to appear in the art, which have a certain light transmission capability.
However, the carrier plate of the LED screen increases the cost and cannot be applied to various scenes requiring deformation and installation, and the solder joint on the carrier plate brings a problem of yield. There is a need in the art to develop new schemes that can effectively reduce the overall cost of LED panels and improve yield.
Disclosure of Invention
In view of the above, the present invention provides a line screen without an LED carrier, including:
the LED lamp comprises a plurality of groups of flexible circuits parallel to each other and a plurality of LED luminous bodies arranged on each group of flexible circuits;
for each set of flexible circuits, wherein,
each LED luminous body comprises coded information of the LED luminous body;
the line is a three-wire system and comprises the following three lines:
the first connecting wire is used for electrically connecting the power supply anode/VCC end of each LED luminous body;
the second connecting wire is used for electrically connecting the power supply cathode/GND end of each LED luminous body;
the third connecting wire is used for electrically connecting the DIN end of the data signal input pin of each LED luminous body so as to provide a data signal;
and each LED luminous body acquires a corresponding data signal aiming at the LED luminous body from the data signal according to the coding information of the LED luminous body.
Preferably, the first and second liquid crystal materials are,
the flexible circuit is externally wrapped with a material with certain light transmittance.
Preferably, the first and second liquid crystal materials are,
the multiple groups of flexible circuits are not in contact with each other from the head end to the tail end.
Preferably, the first and second liquid crystal materials are,
and the gaps among the multiple groups of flexible circuits are used for air to pass through.
Preferably, the first and second liquid crystal materials are,
for each group of flexible circuits, the flexible circuit has any one of the following characteristics:
(1) from head end to tail end, which can be cut into multiple parts;
(2) from the head end or the tail end, the flexible circuit can be spliced with a group of flexible circuits of the line screen with the same structure;
(3) the LED luminous bodies are connected in parallel.
In a preferred embodiment of the method of the invention,
the first connecting line, the second connecting line and the third connecting line are approximately parallel.
Preferably, the first and second liquid crystal materials are,
the multiple groups of flexible circuits are arranged into a plurality of parallel rows/columns.
Preferably, the first and second liquid crystal materials are,
the first connecting line, the second connecting line and the third connecting line are all set to be single-stranded wires or multi-stranded wires.
Preferably, the first and second liquid crystal materials are,
a plurality of first type pins, a plurality of second type pins and a plurality of third type pins are respectively arranged on the first connecting line, the second connecting line and the third connecting line;
each first type pin is used for being electrically connected with a power supply anode/VCC end of each LED luminous body;
each second type pin is used for being electrically connected with the power supply cathode/GND end of each LED luminous body;
each third type pin is used for being electrically connected with the data signal input pin DIN terminal of each LED luminous body so as to provide a data signal.
In addition, the invention also discloses a display device, wherein the display device comprises the line screen free of the LED carrier plate.
The technical scheme of the invention can effectively reduce the total cost of the LED screen, improve the yield, and even improve the light transmittance and the current bearing capacity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a diagram of an LED screen in the prior art;
FIG. 2 is a schematic structural diagram of an LED panel in the prior art;
FIG. 3 is a schematic diagram of another LED panel of the prior art;
fig. 4 is a schematic structural diagram of a line screen without an LED carrier according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", "row", "column", "parallel", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention usually put out when in use, the terms are only used for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 4, in one embodiment, the invention discloses a line screen free of an LED carrier plate, comprising:
the LED lamp comprises a plurality of groups of flexible circuits which are parallel to each other, and a plurality of LED luminous bodies arranged on each group of flexible circuits;
for each set of flexible circuits, wherein,
each LED luminous body comprises coded information of the LED luminous body;
the line is a three-wire system and comprises the following three lines:
the first connecting wire is used for electrically connecting the power supply anode/VCC end of each LED luminous body;
the second connecting wire is used for electrically connecting the power supply cathode/GND end of each LED luminous body;
the third connecting wire is used for electrically connecting the DIN end of the data signal input pin of each LED luminous body so as to provide a data signal;
and each LED luminous body acquires a corresponding data signal aiming at the LED luminous body from the data signal according to the coding information of the LED luminous body.
For the above embodiment, only the three-wire system is adopted, and compared with the prior art, not only the carrier board but also the data signal output pin DOUT and its circuit are eliminated, and fig. 4 just illustrates the structural schematic diagram of a set of flexible circuits.
Comparing fig. 4 with fig. 2, fig. 2 illustrates a structure of an LED panel in the prior art:
although the controller of fig. 2 also utilizes only one DATA signal, i.e., DATA1, this is seemingly the same as the DIN-only one DATA signal shown in fig. 4 of the present invention, but:
in the order from right to left in fig. 2, it can be found that: in fig. 2, in order to implement the breakpoint resume function, the DATA1 is directly connected to the DIN1 pin of the first LED luminary and also connected to the DIN2 pin of the second LED luminary, so as to ensure that the second LED luminary can still obtain the DATA signal from the DATA1 through the DIN2 pin even if the first LED luminary is not working normally and its DOUT cannot send a valid signal. If the first LED luminary is operating properly, DOUT will forward a DATA1 signal processed by the first LED luminary and pass to DIN1 pin of the second LED luminary. And a third LED luminary, and the like.
It is apparent that for the prior art illustrated in fig. 2: the primary pin for transmitting data signals is DIN1, and DIN2 provides redundancy only when DIN1 fails to receive signals or operates abnormally. Also, the signal of DIN1 is by default from DOUT of the preceding stage, and the signal of DIN2 is by default from DIN1 of the preceding stage. For the subsequent stage, the signal itself input in DIN1 of the subsequent stage is processed by the previous stage, so that the subsequent stage can directly acquire the data signal corresponding to the subsequent stage; alternatively, the signal input in DIN2 by the subsequent stage is processed by the subsequent stage according to a fixed processing algorithm, and the subsequent stage can still obtain the data signal corresponding to the subsequent stage. In other words, even if the first LED luminary near the controller is not operating properly on the right side of fig. 2, the second LED luminary in the subsequent stage will also operate properly. And when the first LED luminous body and the second LED luminous body are in failure, the other rear stages have large-area failure. That is, for the breakpoint resume scheme shown in fig. 2, if 2 consecutive luminaires fail, then the corresponding subsequent stage will fail as a whole.
Compared with the prior art shown in fig. 2, the invention can completely eliminate a carrier plate for bearing a circuit and further eliminate DIN2 pins/terminals and corresponding wiring, because each LED luminous body has self corresponding coding information, the invention only needs to obtain a corresponding data signal aiming at the LED luminous body from the data signal according to the coding information of the LED luminous body, thereby ensuring the normal work of each LED luminous body. The prior art shown in fig. 2 does not rely at all on the coding of the LED luminary, but: the data signal is processed by the previous stage and then transmitted to the next stage through the DOUT, or the signal of the next stage according to DIN2 is processed according to a fixed processing algorithm, and then the data signal required by the stage is acquired and transmitted back through the DOUT. The coded information in the invention refers to address coded information or ID coded information of each LED luminous body so as to distinguish each LED luminous body, the information can be rigidly stored in the LED luminous bodies in an OTP mode or other burning technology, and the state of the related storage element is changed so as to be solidified and rigidly stored.
The invention can obviously reduce the wiring complexity and the overall cost, can also obviously reduce the failure rate and improve the yield because the invention can eliminate a carrier plate, redundant pins of DIN2 and wiring connected with a former stage DIN1 thereof, and wiring connected with a former stage DOUT of a latter stage DIN1 and only adopts a three-wire system to connect all LED luminous bodies. Typically, the third connecting wire is used as a data signal wire and is directly connected with DIN of each LED luminary, each LED luminary has its own coding information and correctly obtains a data signal corresponding to the LED luminary from the data signal wire, and each LED luminary is connected with VCC and GND corresponding to the LED luminary, so that when any one LED luminary fails, even two or more LED luminaries fail, the line screen without the LED carrier plate of the present invention can still ensure the operation of the other luminaries.
In addition, comparing the present invention with the prior art shown in fig. 3:
the controller of fig. 3 adds a DATA signal, i.e., DATA2, compared to fig. 2, unlike the DIN DATA signal alone shown in fig. 4 of the present invention. It is apparent that fig. 3 is more complex in wiring than the prior art of fig. 2, and is more susceptible to increased faults than the prior art shown in fig. 2.
In conclusion, the invention can effectively reduce the overall cost of the LED screen and improve the yield, and further improves the light transmittance due to the elimination of the carrier plate.
In another embodiment of the present invention, the substrate is,
the flexible circuit is externally wrapped with a material with certain light transmittance.
A certain light transmission, for example near complete transparency or translucency, depends on what visual effect is desired for the line screen without the LED carrier plate. In addition, it should be noted that, since the present invention eliminates a carrier plate and reduces the number of wires, compared with the prior art, the present invention can increase the line width of the existing wires to improve the current-carrying capability on the premise of satisfying the transparency.
In another embodiment of the present invention, the substrate is,
the flexible circuit is externally coated with an insulating material.
In another embodiment of the present invention, the substrate is,
the flexible circuit is a transparent enameled wire.
In another embodiment of the present invention, the substrate is,
the multiple groups of flexible circuits are not in contact with each other from the head end to the tail end.
In another embodiment of the present invention, the substrate is,
and the gaps among the multiple groups of flexible circuits are used for air to pass through.
In another embodiment of the present invention, the substrate is,
for each group of flexible circuits, the flexible circuit has any one of the following characteristics:
(1) from head end to tail end, which can be cut into multiple parts;
(2) from the head end or the tail end, the flexible circuit can be spliced with a group of flexible circuits of the line screen with the same structure;
(3) the LED luminous bodies are connected in parallel.
It can be understood that, for the above (1) and (2), only the cut parts or the spliced parts are needed, and the corresponding first connecting line, second connecting line and third connecting line have normal functions.
In addition, for each line screen which is free of an LED carrier plate, a plurality of LED luminous bodies are preferably connected in parallel, and the LED luminous bodies are more convenient to cut and splice when connected in parallel. The parallel connection is preferred, which means that other connection modes are not completely excluded, and the basic voltage and current resistance requirements are met whether the connection modes are in series connection or in parallel connection or in series-parallel connection.
In a further embodiment of the method according to the invention,
the first connecting line, the second connecting line and the third connecting line are approximately parallel.
In another embodiment of the present invention, the substrate is,
the multiple groups of flexible circuits are arranged into a plurality of parallel rows/columns.
For the above 2 embodiments, it can be understood that the parallel connection lines and the multiple groups of flexible circuits are arranged in parallel rows/columns, which are beneficial to the visual effect.
In another embodiment of the present invention, the substrate is,
the first connecting line, the second connecting line and the third connecting line are all set to be single-stranded wires or multi-stranded wires.
In another embodiment of the present invention, the substrate is,
a plurality of first type pins, a plurality of second type pins and a plurality of third type pins are respectively arranged on the first connecting line, the second connecting line and the third connecting line;
each first type pin is used for being electrically connected with a power supply anode/VCC end of each LED luminous body;
each second type pin is used for being electrically connected with a power supply cathode/GND end of each LED luminous body;
each third type pin is used for being electrically connected with the data signal input pin DIN terminal of each LED luminous body so as to provide a data signal.
In another embodiment, the LED luminary comprises a patch LED.
In another embodiment, the LED luminary comprises: at least 1 LED lamp pearl chip and any IC or other components and parts of connecting LED lamp pearl chip.
It should be noted that, in terms of LED lighting, whether AC or DC driven, the minimum requirement of the LED itself is two wire power. Due to the development of LED chip technology, even without a driving IC, an LED light emitting body can be formed using a certain number of LED chips having a small occupied area and directly driven by AC or DC.
In addition, it should be noted that, in the field of driving of LEDs, a technique of transmitting a data signal while supplying power by using a power supply line such as a line zero line/a line positive negative line has appeared. This corresponds to a carrier technology. This means that even without the third connection line, it is equally capable of transmitting data signals only via the first connection line and the second connection line. Whether the data signal is a specific code signal for different LED luminaries or different LED chips in a single LED luminary, whether the data signal is an address code signal for a specific LED luminary/LED chip or a color signal for the color of the lighting or display, the transmission of the corresponding data signal can be achieved by using such a carrier technology.
In another embodiment of the present invention, the substrate is,
in each group of flexible circuits, the LED luminous bodies are arranged at equal intervals.
In another embodiment of the present invention, the substrate is,
in the multiple groups of flexible circuits, the LED luminous bodies in each row/column are arranged in an equidistant mode in the row/column.
It can be understood that the above two embodiments are both beneficial to realizing the visual effect of equal spacing.
In another embodiment of the present invention, the substrate is,
the plurality of LED luminous bodies are connected with the ground in common.
In a further embodiment of the method according to the invention,
at the both ends of every group flexible circuit, still be provided with:
the data signal input pin DIN terminal is used for electrically connecting the LED luminous body.
In this way, the carrier board can be cascaded back and forth with the corresponding flexible circuit in the same configuration of the line screen, even though data signal input is involved.
In another embodiment of the present invention, the substrate is,
the coded information of each LED luminous body is different.
In another embodiment of the present invention, the substrate is,
the coded information for each LED luminary represents the ID of each LED luminary or the address of the LED luminary in the line screen free of the LED carrier plate.
In a further embodiment of the method according to the invention,
each LED luminary comprises a memory, and the memory comprises the coded information of the LED luminary.
In another embodiment of the present invention, the substrate is,
the coded information of the LED luminous bodies is burnt to each LED luminous body in advance.
In another embodiment of the present invention, the substrate is,
the line screen free of LED carrier plates can be mounted on any surface or in between any interlayers.
In addition, the invention also discloses a display device, wherein the display device comprises the line screen free of the LED carrier plate.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A line screen free of LED carrier plates, comprising:
the LED lamp comprises a plurality of groups of flexible circuits parallel to each other and a plurality of LED luminous bodies arranged on each group of flexible circuits;
for each set of flexible circuits, wherein,
each LED luminous body comprises coded information of the LED luminous body;
the line is a three-wire system and comprises the following three lines:
the first connecting wire is used for electrically connecting the power supply anode/VCC end of each LED luminous body;
the second connecting wire is used for electrically connecting the power supply cathode/GND end of each LED luminous body;
the third connecting wire is used for electrically connecting the DIN end of the data signal input pin of each LED luminous body so as to provide a data signal;
and each LED luminous body acquires a corresponding data signal aiming at the LED luminous body from the data signal according to the coding information of the LED luminous body.
2. The LED carrier board-exempt line screen of claim 1, wherein, preferably,
the flexible circuit is externally wrapped with a material with certain light transmittance.
3. The LED carrier-board-exempt line screen of claim 1, wherein,
the multiple groups of flexible circuits are not in contact with each other from the head end to the tail end.
4. The LED carrier-board-exempt line screen of claim 1, wherein,
and the gaps among the multiple groups of flexible circuits are used for air to pass through.
5. The LED carrier-board-exempt line screen of claim 1, wherein,
for each group of flexible circuits, the flexible circuit has any one of the following characteristics:
(1) from head end to tail end, which can be cut into multiple parts;
(2) from the head end or the tail end, the flexible circuit can be spliced with a group of flexible circuits of the line screen with the same structure;
(3) the LED luminous bodies are connected in parallel.
6. The LED carrier-board-exempt line screen of claim 1, wherein,
the first connecting line, the second connecting line and the third connecting line are approximately parallel.
7. The LED carrier-board-exempt line screen of claim 1, wherein,
the multiple groups of flexible circuits are arranged into a plurality of parallel rows/columns.
8. The LED carrier-board-exempt line screen of claim 1, wherein,
the first connecting line, the second connecting line and the third connecting line are all set to be single-stranded wires or multi-stranded wires.
9. The LED carrier-board-exempt line screen of claim 1, wherein,
a plurality of first type pins, a plurality of second type pins and a plurality of third type pins are respectively arranged on the first connecting line, the second connecting line and the third connecting line;
each first type pin is used for being electrically connected with a power supply anode/VCC end of each LED luminous body;
each second type pin is used for being electrically connected with the power supply cathode/GND end of each LED luminous body;
each third type pin is used for being electrically connected with the data signal input pin DIN terminal of each LED luminous body so as to provide a data signal.
10. A display device, wherein the display device comprises the LED carrier-free line screen according to any of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309285.1A CN114863830A (en) | 2022-03-27 | 2022-03-27 | Line screen without LED carrier plate and display device thereof |
| PCT/CN2023/081480 WO2023185462A1 (en) | 2022-03-27 | 2023-03-15 | Wire screen without led carrier board and display device comprising wire screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309285.1A CN114863830A (en) | 2022-03-27 | 2022-03-27 | Line screen without LED carrier plate and display device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114863830A true CN114863830A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210309285.1A Pending CN114863830A (en) | 2022-03-27 | 2022-03-27 | Line screen without LED carrier plate and display device thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN114863830A (en) |
| WO (1) | WO2023185462A1 (en) |
Cited By (1)
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| WO2023185462A1 (en) * | 2022-03-27 | 2023-10-05 | 深圳市美矽微半导体有限公司 | Wire screen without led carrier board and display device comprising wire screen |
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| WO2023185462A1 (en) | 2023-10-05 |
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Address after: 518000 East, floor 4, building 4, Shenzhen Software Park, No. 2, Gaoxin Zhonger Road, Maling community, Yuehai street, Nanshan District, Shenzhen, Guangdong Applicant after: Shenzhen Meisi Micro Semiconductor Co.,Ltd. Address before: 518000 East, floor 4, building 4, Shenzhen Software Park, No. 2, Gaoxin Zhonger Road, Maling community, Yuehai street, Nanshan District, Shenzhen, Guangdong Applicant before: SHENZHEN MEIXI MICRO SEMICONDUCTOR CO.,LTD. |