CN210575032U

CN210575032U - LED display control circuit assembly and LED display

Info

Publication number: CN210575032U
Application number: CN201921538616.9U
Authority: CN
Inventors: 韦桂锋
Original assignee: Xian Novastar Electronic Technology Co Ltd
Current assignee: Xian Novastar Electronic Technology Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-19
Anticipated expiration: 2029-09-16

Abstract

The embodiment of the utility model provides a LED display control circuit subassembly and LED display are related to. The LED display control circuit assembly comprises: the remote control device comprises an elongated connecting plate, a remote control board and a control board, wherein the elongated connecting plate is provided with a plurality of Ethernet interfaces, a keypad board connector, a remote control board connector, a first plug-in component and a second plug-in component; the master control card is inserted and fixed to the first plug-in component to form electric connection with the strip-shaped connecting plate; and the display control card is fixedly inserted into the second inserting component to be electrically connected with the strip-shaped connecting plate, and is electrically connected with the main control card through the strip-shaped connecting plate. Through the structural design and the reasonable layout of circuit elements, the thinning of the LED display is facilitated.

Description

LED display control circuit assembly and LED display

Technical Field

The utility model relates to a LED shows technical field, especially relates to a LED display control circuit subassembly and a LED display.

Background

With the continuous development of the LED display technology, the application field thereof is also more and more extensive, for example, the LED display technology is applied to commercial meeting scenes in industries such as government and enterprise, design, medical treatment, education and the like; however, these commercial meeting scenes have high demands for thinning of the LED display, which puts high design requirements on the control circuit component of the LED display.

Disclosure of Invention

Therefore, the embodiment of the utility model provides a LED display control circuit subassembly and LED display are proposed to satisfy the ever-increasing slim demand of LED display.

On the one hand, the embodiment of the utility model provides a LED display control circuit subassembly, include: the remote control device comprises an elongated connecting plate, a remote control board and a control board, wherein the elongated connecting plate is provided with a plurality of Ethernet interfaces, a key board connector, a remote control board connector, a first plug-in component and a second plug-in component; the master control card is fixedly inserted into the first plug-in component to form electric connection with the strip-shaped connecting plate; and the display control card is fixedly inserted into the second plug-in component to form electric connection with the strip-shaped connecting plate, and the display control card is electrically connected with the master control card through the strip-shaped connecting plate.

The LED display control circuit assembly of this embodiment adopts the integrated circuit board integrated configuration, design the connecting plate into the long bar and rationally arrange the position of a plurality of ethernet interfaces, keypad connector and remote control board connector on the rectangular shape connecting plate, on one hand be convenient for the installation of LED display control circuit assembly in the casing in order to do benefit to the slimming of LED display, on the other hand can be under the prerequisite that keeps main control card and display control card hardware structure unchangeable through the compatible LED display of different size specifications and/or functional requirements of circuit component on the rectangular shape connecting plate of suitable increase and decrease.

In an embodiment of the present invention, the length-width ratio of the elongated connecting plate is greater than or equal to 3.

In an embodiment of the present invention, the keypad connector and the remote controller connector are cable connecting sockets respectively.

In an embodiment of the present invention, the main control card is provided with an embedded processor for installing an embedded operating system, the keypad connector and the remote control board connector respectively pass through the first plug assembly electrically connected to the main control card, and the plurality of ethernet interfaces pass through the second plug assembly electrically connected to the display control card.

In one embodiment of the present invention, the display control card is provided with a third plug-in component, a programmable logic device, a multi-port ethernet transceiver, and a video decoder; the display control card and the strip-shaped connecting plate are fixedly spliced together through the third patch module and the second patch module, the multi-port Ethernet transceiver is electrically connected between the programmable logic device and the third patch module to form electrical connection with part or all of the Ethernet interfaces, and the video decoder is electrically connected between the programmable logic device and the third patch module.

In an embodiment of the present invention, the display control card is further provided with a multi-path 5G ethernet transceiver electrically connected between the programmable logic device and the third connector assembly.

In an embodiment of the present invention, the multi-port ethernet transceiver and the multi-path 5G ethernet transceiver are electrically connected to the programmable logic device through SerDes channels, respectively, and each SerDes channel includes a pair of data receiving differential signal lines and a pair of data transmitting differential signal lines.

In an embodiment of the present invention, the display control card is further provided with a microcontroller, a hundred mega ethernet transceiver, a USB transceiver, and a video encoder; the microcontroller is electrically connected with the programmable logic device, the hundred-mega Ethernet transceiver and the USB transceiver are respectively and electrically connected between the microcontroller and the third plug-in component, the video encoder is electrically connected between the programmable logic device and the third plug-in component, and the microcontroller is also electrically connected with the video decoder, the video encoder and the multi-port Ethernet transceiver.

In another aspect, an embodiment of the present invention provides a LED display, including: any one of the aforementioned LED display control circuit assemblies; the key board is provided with a plurality of keys and is electrically connected with the key board connector through a flat cable; the remote control board is provided with an infrared receiver and is electrically connected with the remote control board connector through a flat cable; and the LED display screen comprises a plurality of LED display units which are respectively configured with receiving cards, wherein the LED display units are electrically connected with part or all of the Ethernet interfaces through the receiving cards.

In one embodiment of the present invention, the first connector assembly and the second connector assembly respectively comprise two 200-pin connectors arranged in pairs; and heat dissipation devices are respectively arranged on one sides of the master control card and the display control card, which are far away from the strip-shaped connecting plate.

To sum up, the embodiment of the present invention provides an above-mentioned technical scheme can have following one or more beneficial effect: the LED display control circuit assembly adopts a board card combined structure, the connecting board is designed into a long strip shape, and the positions of the Ethernet interfaces, the key board connector and the remote control board connector are reasonably arranged on the long strip-shaped connecting board. Furthermore, the circuit design on the display control card (including the multi-port Ethernet transceiver and even the multi-path 5G Ethernet transceiver) enables a larger number of output network ports to be realized by using a smaller pin number of the programmable logic device, thereby improving the loading capacity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1A is a schematic block diagram of a control circuit assembly of an LED display according to an embodiment of the present invention.

Fig. 1B is a schematic block diagram of a control circuit assembly of an LED display according to another embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the LED display control circuit assembly shown in fig. 1A.

Fig. 3 is a schematic structural view of the elongated connecting plate shown in fig. 1A.

FIG. 4 is a schematic diagram of a circuit module of the display control card shown in FIG. 1A.

Fig. 5 is a schematic block diagram of an LED display according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of the key sheet shown in fig. 5.

Fig. 7 is a schematic structural view of the remote control panel shown in fig. 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1A, fig. 2 and fig. 3, an embodiment of the present invention provides an LED display control circuit assembly 10, including: the long strip-shaped connecting plate 11, the master control card 13 and the display control card 15.

The strip-shaped connecting board 11 is provided with a plurality of ethernet interfaces (or ethernet interface groups) 111, a keypad connector 113, a remote control board connector 115, a connector assembly 112 and a connector assembly 114. The ethernet interfaces 111 are located on one short side of the elongated web 11, the keypad connector 113 is located on one long side of the elongated web 11 adjacent to the short side, and the remote control connector 115 is located on the other opposite short side of the elongated web 11. In other embodiments, as shown in fig. 1B, the remote control board connector 115 may also be located on the long side of the elongated connector board 11 adjacent to the short side. Furthermore, in a preferred embodiment, the length-width ratio of the elongated connecting plate 11 is greater than or equal to 3, for example, 350 mm in length and 100 mm in width, which is favorable for the convenience of mounting the entire LED display control circuit assembly 10 in the housing of the LED display. The connector block 112 and the connector block 114 each include, for example, two 200Pin high-contact plugs provided in pairs.

As mentioned above, the host controller 13 is plugged and fixed to the connector assembly 112 to form an electrical connection with the strip-shaped connecting plate 11. Specifically, the main control card 13 is provided with an embedded processor for installing an embedded operating system, for example, an android6.0 operating system is adopted, APP applications and APK software are added, a wireless screen projection mode of a PC and a mobile phone is supported, network access is supported in a wireless and wired manner, adjustment display of OSD, brightness, volume and the like is supported, a bluetooth interaction mode is supported, local and online high-definition video playing is supported, and local and online music playing is supported. Furthermore, the master control card 13 is provided with a pair of 200-pin high-contact connectors on one side close to the strip-shaped connection board 11, for example, so as to be capable of being plugged and fixed with the connector assemblies 112 on the strip-shaped connection board 11, thereby forming an electrical connection and a mechanical connection with the strip-shaped connection board 11. The keypad connector 113 and the remote control board connector 115 are electrically connected to the host control card 13, for example, through the connector assembly 112. In addition, as shown in fig. 2, a heat dissipation device, such as a heat sink + heat dissipation fan assembly, is disposed on a side of the master control card 13 away from the elongated connecting plate 11.

Furthermore, the display control card 15 is inserted and fixed to the connector assembly 114 to form an electrical and mechanical connection with the strip connecting plate 11, and the display control card 15 is electrically connected to the master control card 13 through the strip connecting plate 11 to facilitate signal interaction with the master control card 13. As shown in fig. 2, a heat dissipation device, such as a heat sink + heat dissipation fan assembly, is disposed on a side of the display control card 15 away from the elongated connecting plate 11.

Referring to fig. 4, the display control card 15 of the present embodiment is provided with, for example, a connector assembly 150, a programmable logic device 151, a microcontroller 152, a video decoder 153, a multi-port ethernet transceiver 154, a multi-path 5G ethernet transceiver 155, a video encoder 156, a hundred mega ethernet transceiver 157 and a USB transceiver 158.

The connector assembly 150 is, for example, two 200pin high-contact connectors provided in a pair or another pin-count connector provided in a pair. The Programmable logic device 151 is, for example, an FPGA (Field Programmable Gate Array) device, such as a Kintex-7 series FPGA chip of Xilinx corporation or other model FPGA chips. Microcontroller 152 is electrically connected to programmable logic device 151, video decoder 153, multi-port ethernet transceiver 154, multi-channel 5G ethernet transceiver 155, and video encoder 156, which is, for example, an STM32 series single chip microcomputer. The video decoder 153 is electrically connected between the programmable logic device 151 and the patch assembly 150, and is, for example, an HDMI (High Definition multimedia interface) receiver such as an ADV7619 chip. A multi-port Ethernet transceiver 154 is electrically connected between the programmable logic device 151 and the patch module 150 for electrically connecting the plurality of Ethernet interfaces 111, such as a plurality of RJ45 ports of an integrated network, through the patch module 150. Furthermore, multi-port ethernet transceiver 154 is, for example, an eight-port ethernet transceiver and is a single transceiver chip such as an 88E1680 series gigabit ethernet transceiver chip that electrically connects programmable logic device 151, for example, through two SerDes (serialization Deserializer) channels and each SerDes channel includes a pair of data receive differential signal lines and a pair of data transmit differential signal lines; programmable logic device 151 is configured with a SerDes interface accordingly. In the embodiment, the multiport ethernet transceiver 154 is arranged to carry a plurality of network ports, and the SerDes channel is used to electrically connect the multiport ethernet transceiver 154 to the programmable logic device 151, so that a larger number of output network ports can be realized by using a smaller pin count of the programmable logic device 151; for example, the single-path output load is 1G, the universal load is 65 ten thousand pixel points, and the eight network ports can realize 8G load.

The multi-lane 5G ethernet transceiver 155 is electrically connected between the programmable logic device 151 and the jack module 150 for electrically connecting the plurality of ethernet interfaces 111, such as integrated network RJ45 ports, through the jack module 150. Specifically, the multi-path 5G ethernet transceiver 155 is, for example, a two-path 5G ethernet transceiver, and each path of 5G ethernet transceiver is electrically connected to a SerDes interface configured in the programmable logic device 151 through a SerDes channel; correspondingly, the two-way 5G ethernet transceiver electrically connects two integrated RJ45 ports through the plug assembly 150, where the two integrated RJ45 ports may be two ethernet ports of the multiple ethernet interfaces 111 or two ethernet ports subsequently installed in reserved areas of the two ethernet ports. In this embodiment, by additionally providing the multiple 5G ethernet transceivers 155, the single output carries 5G, and one 5G port carries a load equivalent to that of 5 1G ports, which further improves the output carrying capability of the display control card 15.

The video encoder 156 is electrically connected between the programmable logic device 151 and the connector assembly 150, which is, for example, an HDMI transmitter such as a lattic SII9136 series chip, so that an HDMI loop-out function can be implemented. A hundred mega ethernet transceiver 157 is electrically connected between the microcontroller 152 and the connector assembly 150, for example using a LAN8720 series chip; the USB transceiver 158 is electrically connected between the microcontroller 152 and the connector assembly 150, for example using a USB332x series chip; therefore, the USB interface can communicate with an upper computer through the hundred million network and the USB, for example, the USB interface communicates with upper computer screen matching software (LCT software).

In addition, the connector assembly 150 of the present embodiment is further provided with an LVDS (Low Voltage differential signaling) interface pin set, for example, and the LVDS interface pin set is electrically connected to the programmable logic device 151. In this way, the display control card 15 of the present embodiment can receive the LVDS format video signal output by the main control card 13, thereby improving the compatibility of the display control card 15. In addition, it should be noted that the present embodiment does not limit the number of ports of the multi-port ethernet transceiver 154, and it may also be a four-port ethernet transceiver, and accordingly, four ports may be carried and the programmable logic device 151 may be electrically connected through one SerDes channel; alternatively, the display control card 15 of the present embodiment may implement the program loading function on the programmable logic device 151 by using an external ARM processor instead of the microcontroller 152, and accordingly, the hundred mega ethernet transceiver 157 and the USB transceiver 158 may be omitted.

In summary, the LED display control circuit assembly 10 of the present embodiment adopts a board card combination structure, the connection board is designed to be in a long strip shape, and the positions of the ethernet interfaces 111, the keypad connector 113 and the remote control board connector 115 are reasonably arranged on the long strip-shaped connection board 11, on one hand, the LED display control circuit assembly 10 is conveniently installed in the housing to facilitate the thinning of the LED display, and on the other hand, the LED displays with different size specifications and/or functional requirements can be compatible by appropriately increasing and decreasing circuit elements on the long strip-shaped connection board 11 on the premise of keeping the hardware structures of the main control card 13 and the display control card 15 unchanged. Furthermore, the circuit design on the display control card 15 (including the multi-port ethernet transceiver and even the multi-path 5G ethernet transceiver) enables a larger number of output ports to be implemented with a smaller pin count of the programmable logic device 151, thereby improving the loading capability.

Referring to fig. 5, an embodiment of the present invention provides an LED display 100, including: an LED display control circuit assembly 10, a keypad 20, a remote control panel 30 and an LED display screen 40.

The keypad 20 is connected to the keypad connector 113 of the LED display control circuit assembly 10 by, for example, a flat cable. The keypad 20 is provided with a plurality of keys 201, such as a pair of volume adjustment keys, a pair of brightness adjustment keys, three HDMI input source selection keys, and a black screen key, as shown in fig. 6.

The remote control board 30 is connected to the remote control board connector 115 of the LED display control circuit assembly 10, for example, by a flat cable. The remote control board 30 is provided with an infrared receiver 301 or even an on/off key as shown in fig. 7, for example.

The LED display screen 40 is electrically connected to the ethernet interfaces 111 of the LED display control circuit assembly 10, and includes a plurality of LED display units 41 respectively configured with receiving cards 411. Taking fig. 5 as an example, the LED display screen 40 has eight LED display units 41, and each LED display unit 41 is configured with one receiving card 411, so that each receiving card 411 may be electrically connected to one ethernet interface of the multiple ethernet interfaces 111, or multiple receiving cards 411 may be cascaded together and then electrically connected to the same ethernet interface; as such, the LED display screen 40 may be a part or all of the ethernet interfaces 111 electrically connected to the LED display control circuit assembly 10. As for the receiving card 411, it can adopt the existing mature receiving card product, so its specific circuit structure will not be described in detail here.

In addition, it should be understood that the foregoing embodiments are only exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated for use without conflict, contradiction and conflict between technical features and structures.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An LED display control circuit assembly, comprising:

the remote control device comprises an elongated connecting plate, a remote control board and a control board, wherein the elongated connecting plate is provided with a plurality of Ethernet interfaces, a key board connector, a remote control board connector, a first plug-in component and a second plug-in component;

the master control card is fixedly inserted into the first plug-in component to form electric connection with the strip-shaped connecting plate; and

and the display control card is fixedly inserted into the second plug-in component to be electrically connected with the strip-shaped connecting plate, and is electrically connected with the master control card through the strip-shaped connecting plate.

2. The LED display control circuit assembly of claim 1, wherein the elongated web has a length to width ratio greater than or equal to 3.

3. The LED display control circuit assembly of claim 1, wherein the keypad connector and the remote control board connector are each a flex cable connector.

4. The LED display control circuit assembly of claim 1, wherein the master control card is provided with an embedded processor mounting an embedded operating system, the keypad connector and the remote control board connector are electrically connected to the master control card through the first socket assembly, and the plurality of ethernet interfaces are electrically connected to the display control card through the second socket assembly, respectively.

5. The LED display control circuit assembly of claim 4, wherein the display control card is provided with a third plug assembly, a programmable logic device, a multi-port Ethernet transceiver, and a video decoder; the display control card and the strip-shaped connecting plate are fixedly spliced together through the third patch module and the second patch module, the multi-port Ethernet transceiver is electrically connected between the programmable logic device and the third patch module to form electrical connection with part or all of the Ethernet interfaces, and the video decoder is electrically connected between the programmable logic device and the third patch module.

6. The LED display control circuit assembly of claim 5, wherein the display control card is further provided with a multi-path 5G Ethernet transceiver electrically connected between the programmable logic device and the third connector assembly.

7. The LED display control circuit assembly of claim 6, wherein the multi-port Ethernet transceiver and the multi-lane 5G Ethernet transceiver are electrically connected to the programmable logic device through SerDes lanes, respectively, and each SerDes lane includes a pair of data receive differential signal lines and a pair of data transmit differential signal lines.

8. The LED display control circuit assembly of claim 5, wherein the display control card is further provided with a microcontroller, a hundred mega Ethernet transceiver, a USB transceiver, and a video encoder; the microcontroller is electrically connected with the programmable logic device, the hundred-mega Ethernet transceiver and the USB transceiver are respectively and electrically connected between the microcontroller and the third plug-in component, the video encoder is electrically connected between the programmable logic device and the third plug-in component, and the microcontroller is also electrically connected with the video decoder, the video encoder and the multi-port Ethernet transceiver.

9. An LED display, comprising:

the LED display control circuit assembly of any one of claims 1 to 8;

the key board is provided with a plurality of keys and is electrically connected with the key board connector through a flat cable;

the remote control board is provided with an infrared receiver and is electrically connected with the remote control board connector through a flat cable; and

the LED display screen comprises a plurality of LED display units which are respectively configured with receiving cards, wherein the LED display units are electrically connected with part or all of the Ethernet interfaces through the receiving cards.

10. The LED display of claim 9, wherein said first connector assembly and said second connector assembly each comprise two 200-pin connectors arranged in pairs; and heat dissipation devices are respectively arranged on one sides of the master control card and the display control card, which are far away from the strip-shaped connecting plate.