CN212624747U - LED display unit and LED display device - Google Patents
LED display unit and LED display device Download PDFInfo
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- CN212624747U CN212624747U CN202021454961.7U CN202021454961U CN212624747U CN 212624747 U CN212624747 U CN 212624747U CN 202021454961 U CN202021454961 U CN 202021454961U CN 212624747 U CN212624747 U CN 212624747U
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Abstract
The application provides a LED display element and LED display device, LED display element includes: the input interface is used for receiving an input direct-current voltage and a video signal; the time sequence controller is used for respectively sending scanning signals and gray scale signals generated by video signals received by the input interface to the row drivers and the column drivers so as to drive the LED display module to display a preset picture; and the output interface is respectively connected with the input interface and the time sequence controller and is used for transmitting the input direct-current voltage transmitted by the input interface and the video signal transmitted by the time sequence controller. The LED display unit in the application can enable the LED display equipment adopting the structure to tend to be lighter and thinner.
Description
Technical Field
The application relates to the technical field of LED display, in particular to an LED display unit and an LED display device.
Background
Fig. 1 shows a schematic structural diagram of a conventional LED display device. Referring to fig. 1, the LED display device 10 generally includes a power module 11, a video card 12, a timing control unit 13, a row driving circuit 14, a column driving circuit 15, and an LED array 16.
For power module 11So as to generate dc voltages V1, V2, V3 and V4 according to the AC voltage AC for respectively supplying power to the video card 12, the timing control unit 13, the row driving circuit 14 and the column driving circuit 15. The video receiving card 12 is configured to receive a video signal through a USB interface or a Wi-Fi interface and transmit the video signal to the timing control unit 13. The timing control unit 13 is used for generating a scanning signal S according to the received video signalSCANAnd a gray scale signal SGL. The row driving circuit 14 is used for generating a scanning signal S according to the scanning signalSCANThe control commands turn on the LED array 16 row by row. The column driving circuit 15 is used for generating a scan signal S according to the data signalSCANCorresponding gray scale signal SGLThe generated driving voltage for each row of pixels drives the LED array 16 to generate a predetermined frame.
Because the power module 11 and the video receiving card 12 both have a relatively large size, the conventional LED display device needs a box body to accommodate the power module 11 and the video receiving card 12, which is not favorable for the thinning of the LED display device.
SUMMERY OF THE UTILITY MODEL
An object of the embodiments of the present application is to provide an LED display device, in which a timing controller, a row driver, and a column driver are all disposed in each LED display unit of the LED display device, so that the LED display device has an expandable size.
An object of the embodiment of the present application is to provide an LED display device, which transmits an input dc voltage and a video signal through a composite input interface, thereby eliminating a power module and a video receiving card, and optimizing the overall thickness of the LED display device.
An object of the embodiments of the present application is to provide an LED display device, in which a timing controller, a row driver, and a column driver are disposed in each LED display unit of the LED display device, so that the requirement of narrow frame or no frame of the LED display device can be met.
In a first aspect, an LED display unit in an embodiment of the present application includes:
the input interface is used for receiving an input direct-current voltage and a video signal;
the time sequence controller is used for respectively sending scanning signals and gray scale signals generated by the video signals received by the input interface to the row drivers and the column drivers so as to drive the LED display module to display a preset picture;
and the output interface is respectively connected with the input interface and the time sequence controller and is used for transmitting the input direct-current voltage transmitted by the input interface and the video signal transmitted by the time sequence controller.
In one embodiment, the LED display unit further comprises:
and the power supply conversion circuit is used for converting the input direct-current voltage sent by the input interface into direct-current power supply voltage so as to supply power to the time sequence controller, the row driver and the column driver.
In one possible implementation, the column drivers are co-male or co-female column drivers.
In one embodiment, the input interface and the output interface each comprise:
a power interface for transmitting the input DC voltage;
a High Definition Multimedia Interface (HDMI) for transmitting the video signal.
According to a second aspect of the present application, there is also provided an LED display device, comprising:
a substrate;
a plurality of cascaded display modules, each cascaded display module comprising a plurality of LED display units as described in the first aspect in a cascaded configuration;
in each cascade display module, the LED display unit in the front is electrically connected to the LED display unit in the rear through the output interface, so that the input dc voltage and the video signal are transmitted to each LED display unit.
In a possible implementation mode, the LED device further comprises a video receiving unit;
the video receiving unit includes:
the plurality of second input interfaces are used for being coupled with the plurality of cascade display modules so as to provide the input direct-current voltage and the video signals for each cascade display module.
In one possible implementation, the video receiving unit further includes:
the AC/DC conversion circuit is used for converting an AC voltage into the input DC voltage.
In one possible implementation, the video receiving unit further includes:
the video processing unit is used for receiving an input video signal;
and the second time schedule controller is used for generating each video signal required by each cascade display module according to the input video signal.
In one implementation, the video processing unit has a wired transmission interface to receive the input video signal sent from the data storage device.
In another implementation, the video processing unit has a wireless transmission interface to receive the input video signal transmitted from a wireless transmission device.
Compared with the prior art, the LED display unit has the following beneficial effects:
1. the LED display unit in this application is inside can receive and transmit video signal and power signal, so LED display unit's periphery need not set up structures that box etc. are used for supporting video receiver and/or power module, therefore LED display unit has recompression space in its thickness direction, makes LED display device can tend to more frivolous.
2. The LED display units between the cascade display modules for forming the LED display device can be connected through the adjacent output interface and input interface, so that the LED display device can realize no frame or narrow frame.
3. Each LED display unit in the LED display device is provided with a time schedule controller, a row driver, a column driver and an input/output interface capable of transmitting input direct-current voltage video signals, and each LED display unit is not required to be provided with a box body, so that the size of the LED display device can be expanded at will.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 shows a schematic structural diagram of a conventional LED display device;
FIG. 2 is a schematic diagram illustrating a structure of an LED display unit according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of an LED display device according to an embodiment of the present application;
fig. 4 shows a schematic structural diagram of a video receiving unit according to an embodiment of the present application.
Icon: 100-an LED display unit; 110-an input interface; 120-a time schedule controller; 130-row driver; 140-column drivers; 150-an LED display module; 160-an output interface; 170-power conversion circuit; 200-a substrate; 300-a video receiving unit; 310-a second input interface; 320-an alternating current-direct current conversion circuit; 330-a second timing controller; 340-a video processing unit; 400-cascade display module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
Fig. 2 is a schematic structural diagram of an LED display unit according to an embodiment of the present application. Referring to fig. 2, the LED display unit 100 includes an input interface 110, a timing controller 120, a row driver 130, a column driver 140, an LED display module 150, and an output interface 160.
The input interface 110 is used for receiving an input DC voltage VINAnd a video signal SV。
The timing controller 120 is used for receiving the video signal S transmitted by the input interface 110VAnd for transmitting the video signal. The timing controller 120 generates a scan signal S from the received video signalSCANAnd gray scale signal SGLAnd then sent to the row driver 130 and the column driver 140 respectively to drive the LED display module 150 to display a predetermined image. The LED display module is an LED array which is provided with a plurality of LEDs, and each LED determines the brightness (gray scale) according to the driving current. Specifically, the row driver 130 is used for performing the row-by-row turn-on operation on the LED display module 150 according to the scan signal. The row driver 140 is configured to generate a driving current for each row of pixels according to a gray-scale signal corresponding to the scanning signal to drive the LED display module 150 to generate a predetermined frame.
In the solution of the present application, the timing controller 120 also transmits the received video signal to the output interface 160.
The output interface 160 is connected to the input interface 110 and the timing controller 120, respectively, and the output interface 160 receives the input dc voltage transmitted from the input interface 110 and the video signal transmitted from the timing controller 120, and transmits the input dc voltage and the video signal to a structure other than the LED display unit.
In the LED display unit 100 of the present application, by providing the input interface 110 and the output interface 160, an input dc voltage transmission path from the input interface 110 to the output interface 160 and a video signal transmission path formed by the input interface 110, the timing controller 120 and the output interface 160 are formed inside the LED display unit. Because the LED display unit 100 can receive and transmit video signals and power signals inside, the LED display unit 100 in the present application does not need to have a structure for supporting a video receiver and/or a power module, such as a box, at the periphery thereof, and the LED display unit 100 does not need to have a peripheral frame structure, so that the LED display unit 100 has a re-compressible space in the thickness direction thereof, thereby making the LED display device tend to be lighter and thinner.
In the embodiment of the present application, the input interface and the output interface may be two interfaces having input and output functions in one interface device, or may be two independently provided interface devices. When the input interface and the output interface are independently arranged, the input interface and the output interface can be arranged on two sides of the LED display unit, wherein one side of the LED display unit is cascaded with the LED display unit in the front, and the other side of the LED display unit is cascaded with the LED display unit in the back.
In one embodiment, the LED display unit further includes a power conversion circuit 170. The power conversion circuit 170 is configured to convert an input dc voltage sent from the input interface 110 into a dc supply voltage to supply power to the timing controller 120, the row driver 130, and the column driver 140. In this embodiment, the input dc voltage may be a dc supply voltage directly available to the timing controller 120, the row driver 130, and the column driver 140, or may be a dc supply voltage that cannot be directly available to the timing controller 120, the row driver 130, and the column driver 140, in which case the power conversion circuit 170 is configured to convert the input dc voltage into a dc supply voltage available to the timing controller 120, the row driver 130, and the column driver 140.
In one embodiment, the LED display module 150 includes a lamp panel and a plurality of LED beads arranged on the lamp panel in a matrix. Power conversion circuit 170 sets up on the lamp plate.
Set up LED lamp pearl on the lamp plate, then the centre of lamp plate can be wired in order to connect a plurality of LED lamp pearls that are the matrix arrangement. The power conversion circuit 170 is arranged on the lamp panel, and only wiring is needed on the lamp panel, and the thickness of the lamp panel is not increased, so that the power conversion circuit 170 is designed independently relative to the timing controller 120, the row driver 130 and the column driver 140, and only the timing controller 120, the row driver 130 and the column driver 140 can be packaged into a controller in the LED display unit, so that the thickness of the controller in the LED display unit can be further thinned, and further the LED display unit 100 can be further thinned.
The column drivers 140 in the present application may be either co-male or co-female column drivers. When the LED display module 150 is a common-anode LED display module, the row driver 140 is a common-anode row driver, and when the LED display module 150 is a common-cathode LED display module, the row driver 140 is a common-cathode row driver.
In one embodiment, the video signal transmission within the LED display unit employs a parallel transmission architecture. In the scheme, the video signal transmission direction of the parallel transmission structure is towards one direction for signal transmission, and after the controller in the LED display unit is packaged, the signal flow direction in each pin is fixed, so that when the display equipment assembled by the LED display unit reaches the hands of a user, the user does not need to debug again and can use the display equipment directly.
LED display unit in one embodiment, the input interface 110 and the output interface 150 each include a power interface and a high definition multimedia interface (hdmi). The power interface is used for transmitting input direct-current voltage, and the high-image-quality multimedia interface HDMI is used for transmitting video signals.
According to another aspect of the present application, there is also provided an LED display device. Fig. 3 is a schematic structural diagram of an LED display device according to an embodiment of the present application. Referring to fig. 3, the LED display device includes a substrate 200, a video receiving unit 300, and a plurality of cascade display modules 400.
Each cascade display module 400 has a plurality of LED display units 100 in a cascade configuration, wherein each LED display unit 100 employs an LED display unit 100 of any of the above structures. In each cascade display module 400, the leading LED display unit 100 is electrically connected to the trailing LED display unit 100 through an output interface, so that the input dc voltage and the video signal are transmitted to each LED display unit 100.
The video receiving unit 300 has a plurality of second input interfaces to couple with a plurality of cascaded display modules 400 for providing the cascaded display modules 400 with input dc voltage and video signals.
The LED display device in the application adopts the LED display unit structure without the frame setting such as the box body, each LED display unit can carry out the transmission of input direct current voltage and video signal, the transmission of input direct current voltage and video signal can be realized through the output interface of the previous LED display unit and the input interface of the next LED display unit between the adjacent LED display units in the cascade display module 400, each cascade display module 400 only needs to be connected with one second input interface of the video receiving unit 300 to realize the access of the input direct current voltage and the video signal of the whole cascade display module, therefore, the frame such as the box body is not needed between each cascade display module 400 in the LED display device, and the LED display device can realize no frame or narrow frame.
Meanwhile, each LED display unit in the LED display device is provided with a time schedule controller, a row driver, a column driver and an input/output interface capable of transmitting input direct current voltage and video signals, and each LED display unit is not required to be provided with a box body, so that the size of the display device can be expanded at will.
Fig. 4 is a schematic structural diagram of a video receiving unit according to an embodiment of the present application. Referring to fig. 4, the video receiving unit 300 includes a plurality of second input interfaces 310, an ac/dc converting circuit 320, a second timing controller 330, and a video processing unit 340.
The second input interfaces 310 are coupled to the cascaded display modules 400 for providing an input DC voltage V to each of the cascaded display modules 400I NAnd a video signal SV。
The AC/dc converting circuit 320 is used to convert an AC voltage into an input dc voltage VIN。
The second timing controller 330 is used for receiving an input signal SVIGenerate each video signal S required by each cascade display module 400V。
The video processing unit 340 is used for receiving an input video signal SVIAnd transfers it to the second timing controller 330.
In one embodiment, the video processing unit may have a wired transmission interface to receive incoming video signals sent from the data storage device.
In the embodiment of the present application, the wired transmission interface includes, but is not limited to, a USB interface, a DVI (Digital Display Working Group), a VGA (Video Graphics Array), and other Video signal input interfaces.
The video processing unit is provided with a wired transmission interface, so that the LED display device is compatible with equipment such as a U disk and the like, and can play video files in the equipment such as the U disk and the like.
In another embodiment, the video processing unit has a wireless transmission interface to receive incoming video signals transmitted from a wireless transmission device. The wireless transmission interface includes, but is not limited to, a Wi-Fi interface.
The video processing unit is provided with a wireless transmission interface, so that the LED display device can realize operations including but not limited to wireless control, WiFi screen projection and the like.
In another embodiment, the video processing unit in the present application may further have an interface for performing signal transmission with an apparatus such as an android player, so that the LED display device can implement a playing operation of a video file in the apparatus such as the android player.
In yet another embodiment, the video processing unit also has a HUB interface. The HUB interface is used for receiving an input video signal, regenerating, shaping and amplifying the received input video signal, and then sending the regenerated input video signal to the video receiving unit.
In one implementation, the LED display device includes 10 cascaded display modules 400, and a plurality of LED display units 100 are cascaded upwards in each cascaded display module 400. It should be noted that, the number of the cascade display modules 400 in the LED display device is not specifically limited, and a manufacturer can perform corresponding adjustment according to production requirements.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
In the description of the present application, it is noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. "connected" is to be understood in a broad sense, e.g., it can be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Claims (10)
1. An LED display unit, comprising:
the input interface is used for receiving an input direct-current voltage and a video signal;
the time sequence controller is used for receiving the video signals sent by the input interface and respectively sending scanning signals and gray scale signals generated by the video signals to the row drivers and the column drivers so as to drive the LED display module to display a preset picture;
an output interface transmitting the input DC voltage transmitted by the input interface and the video signal transmitted by the timing controller.
2. The LED display unit of claim 1, further comprising:
and the power supply conversion circuit is used for converting the input direct-current voltage sent by the input interface into direct-current power supply voltage so as to supply power to the time sequence controller, the row driver and the column driver.
3. The LED display unit of claim 1, wherein the column driver is a common-male or common-female column driver.
4. The LED display unit of any of claims 1 to 3, wherein the input interface and the output interface each comprise:
a power interface for transmitting the input DC voltage;
and the high-definition multimedia interface HDMI is used for transmitting the video signal.
5. An LED display device, comprising:
a substrate;
a plurality of cascaded LED display modules, each cascaded LED display module comprising a plurality of LED display units of any one of claims 1-4 in a cascaded configuration;
in each cascade LED display module, the LED display unit in the front is electrically connected with the input interface of the LED display unit in the back through the output interface, so that the input direct-current voltage and the video signal are transmitted to each LED display unit.
6. The LED display device of claim 5, further comprising a video receiving unit;
the video receiving unit includes:
the plurality of second input interfaces are used for being coupled with the plurality of cascade display modules so as to provide the input direct-current voltage and the video signals for each cascade display module.
7. The LED display device of claim 6, wherein the video receiving unit further comprises:
the AC/DC conversion circuit is used for converting an AC voltage into an input DC voltage.
8. The LED display device of claim 6, wherein the video receiving unit further comprises:
a video processing unit for receiving an input video signal;
and the second time schedule controller is used for generating the video signals required by all the cascade display modules according to the input video signals.
9. The LED display device as claimed in claim 8, wherein the video processing unit has a wired transmission interface to receive the input video signal from the data storage device.
10. The LED display device as claimed in claim 8, wherein the video processing unit has a wireless transmission interface for receiving the input video signal transmitted from a wireless transmission device.
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| CN202021454961.7U CN212624747U (en) | 2020-07-22 | 2020-07-22 | LED display unit and LED display device |
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| CN202021454961.7U CN212624747U (en) | 2020-07-22 | 2020-07-22 | LED display unit and LED display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768736A (en) * | 2020-07-22 | 2020-10-13 | 北京集创北方科技股份有限公司 | LED display unit and LED display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768736A (en) * | 2020-07-22 | 2020-10-13 | 北京集创北方科技股份有限公司 | LED display unit and LED display device |
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