CN216671169U - Display module and display system - Google Patents

Abstract

The application discloses a display module and a display system, wherein the display module comprises a control component, a power supply component, a driving component and a display component which are integrated into a whole; the control assembly is electrically connected with the driving assembly and is used for receiving display data, sending the display data to another display module and controlling the driving assembly to work according to the display data; the driving assembly and the power supply assembly are electrically connected with the display assembly, the driving assembly is used for driving the display assembly to display and output, and the power supply assembly is electrically connected with an external power supply and supplies power to the display assembly. The application provides a display module assembly and display system can reduce display module assembly's thickness, simplifies display module assembly's structure, improves the reliability.

Description

Display module and display system

Technical Field

The application relates to the technical field of display control, in particular to a display module and a display system.

Background

At present, electrical performance components of a light-emitting diode (LED) display screen mainly include a receiving card, a power module, and an LED lamp panel module. The receiving card is responsible for receiving the signal that the sending card transmitted through the net gape, then controls LED lamp plate module and lights up the demonstration, passes to the next receiving card through the net gape simultaneously and carries out signal cascade. The power module supplies power for the LED lamp panel module. The receiving card, the power module and the LED lamp panel module are relatively independent individuals and are mutually interconnected through cables, hardware connectors or HUB (multi-port repeater) adapter plates.

In the LED display screen in the prior art, because the parallel signals are transmitted between the receiving card and the LED lamp panel module, the signal connection between the receiving card and the LED lamp panel module can be very many, the signal connection is completed in a wiring or connector mode, the reliability is low, and meanwhile, the problem of electromagnetic interference easily occurs in long-distance transmission.

SUMMERY OF THE UTILITY MODEL

The main technical problem who solves of this application provides a display module assembly and display system, can reduce display module assembly's thickness, simplifies display module assembly's structure, improves the reliability.

In order to solve the technical problem, the application adopts a technical scheme that: the display module comprises a control component, a power supply component, a driving component and a display component which are integrated into a whole;

the control assembly is electrically connected with the driving assembly and is used for receiving display data, sending the display data to another display module and controlling the driving assembly to work according to the display data; the driving assembly and the power supply assembly are electrically connected with the display assembly, the driving assembly is used for driving the display assembly to display and output, and the power supply assembly is electrically connected with an external power supply and supplies power to the display assembly.

Further, the control component comprises a programmable logic device and at least one pair of transceivers, the transceivers are electrically connected with the programmable logic device, and the transceivers adopt a high-speed serial interface to receive and send the display data; the transceiver comprises a receiver and a transmitter, the receiver is used for receiving the display data from the outside of the display module and decoding the display data, and the transmitter is used for transmitting the display data to a control component of another display module.

Further, the transceiver is integrated within the programmable logic device.

Further, the transceiver includes two pairs of LVDS transceivers, one pair of the LVDS transceivers is used for receiving display data and sending the display data to another display module, and the other pair of the LVDS transceivers is used for backing up the display data.

Furthermore, the control component comprises a synchronous dynamic random access memory electrically connected with the programmable logic device, the programmable logic device caches the decoded display data in the synchronous dynamic random access memory, and reads corresponding display data from the synchronous dynamic random access memory to control the driving component to work.

Further, the control component includes a clock jitter removing unit electrically connected between the programmable logic device and the transmitter, and the clock jitter removing unit is configured to perform clock jitter removing processing on the decoded display data, perform data encoding, and transmit the data to the next-stage display module through the transmitter.

Further, the external power supply is a direct-current high-voltage power supply, and the voltage of the direct-current high-voltage power supply is 24-36V.

Further, the display assembly comprises a plurality of LED lamp beads, the power supply assembly comprises a multi-path DC/DC converter, and the multi-path DC/DC converter converts the voltage of the direct-current high-voltage power supply into the voltage required by the LED lamp beads.

Further, the multi-path DC/DC converter is a three-path DC/DC buck converter, and the three-path DC/DC buck converter converts the voltage of the direct-current high-voltage power supply into three-path voltages of 3.8V, 3.8V and 2.8V, and respectively supplies power to the blue, green and red LED lamp beads.

In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided a display system including:

in a plurality of display modules as described in any of the above embodiments, the control modules of adjacent display modules are electrically connected by a high-speed serial interface.

Different from the prior art, the beneficial effects of the application are that:

according to the display module and the display system provided by the embodiment of the application, the control component is electrically connected with the driving component, and the control component is used for receiving display data, sending the display data to another display module and controlling the driving component to work according to the display data; the driving assembly and the power supply assembly are electrically connected with the display assembly, the driving assembly is used for driving the display assembly to display and output, and the power supply assembly is used for being electrically connected with an external power supply and supplying power to the display assembly, so that the display assembly can normally work.

And, this application embodiment is integrated in an organic whole with control assembly, power supply unit, drive assembly and display module, for traditional scheme, has saved switching and wiring between original receiving card, HUB board, the power, has saved interconnection cable or connector between original control card and the display screen to make the wiring simple, the adaptor reduces, can reduce display module's thickness, simplify display module's structure, improve the reliability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

fig. 1 is a schematic structural diagram of a display module according to the present embodiment;

fig. 2 is a schematic structural diagram of a control assembly provided in the present embodiment;

fig. 3 is a schematic structural diagram of another display module provided in this embodiment;

fig. 4 is a schematic structural diagram of a power supply module and a display module provided in this embodiment.

Description of reference numerals:

100. a display module;

1. a programmable logic device;

2. a receiver; 2A, LVDS receiver; 2B, LVDS receiver;

3. a transmitter; 3A, LVDS transmitter; 3B, LVDS transmitter;

4. a drive assembly;

5. a display component; 51. a blue LED lamp bead; 52. a green LED lamp bead; 53. a red LED lamp bead;

6. a power supply assembly; 61. a DC/DC buck converter;

7. a direct current high voltage power supply;

8. a synchronous dynamic random access memory;

9. a clock debounce unit.

Detailed Description

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 only a part of the embodiments of the present application, and not all of the embodiments. 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.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1. The embodiment of the application provides a display module 100, which comprises a control assembly, a power supply assembly 6, a driving assembly 4 and a display assembly 5 which are integrated into a whole. Integrated here, is to be understood as being mounted integrally on the same mounting plate, which may be a circuit board or other component.

The control component is electrically connected with the driving component 4, and is used for receiving display data, sending the display data to another display module 100 and controlling the driving component 4 to work according to the display data; the driving assembly 4 and the power supply assembly 6 are both electrically connected with the display assembly 5, the driving assembly 4 is used for driving the display assembly 5 to perform display output, and the power supply assembly 6 is used for being electrically connected with an external power supply and supplying power to the display assembly 5.

The display module assembly 100 that this application embodiment provided can guarantee normal work to, with control assembly, power supply unit 6, drive assembly 4 and display module 5 integration in an organic whole, can cancel interconnected cable or connector between original control card and the display screen, thereby reduce display module assembly 100's thickness, simplify display module assembly 100's structure, improve the reliability.

In this embodiment, the control component may comprise a programmable logic device 1 and at least one pair of transceivers. The transceiver is electrically connected with the programmable logic device 1, and the transceiver receives and transmits display data by adopting a high-speed serial interface. Because the display module 100 integrates the control component, the original receiving card is not provided, and the single display module 100 can be used only by accessing an external power supply and a serial digital signal.

In the prior art, the receiving card accesses or cascades signals through an ethernet port, the receiving card includes at least 2 ethernet gigabit PHYs (Physical layers) and a network transformer, and the receiving card and the LED lamp panel module need to be switched through a high-speed connector or a cable, which increases the cost of the overall scheme. In the embodiment of the present application, the transceivers of different display modules 100 are electrically connected through a high-speed serial interface, so that an ethernet PHY and a network transformer are omitted, and the cost is reduced.

Specifically, as shown in fig. 1, the transceiver includes a receiver 2 and a transmitter 3, the receiver 2 is used for receiving and decoding display data (i.e. high-speed serial data to be displayed) from outside the display module 100, and the transmitter 3 is used for transmitting the display data to a control component of another display module 100.

Preferably, the transceiver may be integrated within the programmable logic device 1. Of course, in other embodiments, the transceiver may be electrically connected to the programmable logic device 1 as a separate module.

In a particular embodiment, the transceiver comprises an LVDS (Low-Voltage Differential Signaling) transceiver. The data transmission between the display modules 100 adopts a high-speed serial digital signal interface, when the transceiver is an LVDS transceiver, the data transmission rate can reach 500Mhz, the current RGB parallel digital signals are generally within 15Mhz, the data signals which originally need to be transmitted by 30 signal lines can be completed only by adopting 2 (positive and negative signal) lines, the number of externally interconnected signal lines of the display modules 100 is greatly reduced, and the reliability is improved; because the number of the connections is reduced, the connectors with smaller scale can be selected for external interconnection, and the cost is reduced; in the past, the problem of electromagnetic interference caused by a large number of parallel signal traces between the display modules 100 is solved by using low-voltage serial differential signal transmission.

In this embodiment, there may be multiple pairs of LVDS transceivers per display module 100. For example, each display module 100 has two pairs of LVDS transceivers, one pair of LVDS transceivers is used for receiving display data and sending the display data to the other display module 100, and the other pair of LVDS transceivers is used for backing up the display data.

Specifically, as shown in fig. 2, one pair of LVDS transceivers includes an LVDS receiver 2A and an LVDS transmitter 3A, and the other pair of LVDS transceivers includes an LVDS receiver 2B and an LVDS transmitter 3B. Normal display data can be received by the LVDS receiver 2A and input to the programmable logic device 1, and output by the LVDS transmitter 3A to the next display module 100. Meanwhile, a backup of the display data can be accessed from the LVDS receiver 2B to the programmable logic device 1 and output to the previous display module 100 by the LVDS transmitter 3B, so that the redundant backup of the display data is realized.

As shown in fig. 3, in this embodiment, the control component may further include a synchronous dynamic random access memory 8(SDRAM) electrically connected to the programmable logic device 1, and the programmable logic device 1 buffers the decoded display data into the SDRAM 8 and reads the corresponding display data from the SDRAM 8 to control the driving component 4 to operate. Synchronous dynamic random access memory 8 may be a separate module or may be integrated within programmable logic device 1.

In a preferred embodiment, the control assembly may further comprise a clock debounce unit 9, as shown in fig. 3. The clock debounce unit 9 is electrically connected between the programmable logic device 1 and the transmitter 3, and the clock debounce unit 9 is configured to perform clock debounce processing on the decoded display data and the clock, perform data encoding again, form, for example, an LVDS signal, and transmit the LVDS signal to the next-stage display module 100 through the transmitter 3. The clock debounce unit 9 may be a separate module or may be integrated within the programmable logic device 1.

In the present embodiment, the external power supply connected to the power supply module 6 is a dc high voltage power supply 7, and the voltage of the dc high voltage power supply 7 is 24 to 36V. In the past, alternating current is input and then is converted into direct current, so that the conversion efficiency is low, the heat productivity is large, the volume occupation is large, and the thickness of the whole LED display screen can be increased; and the input relates to the high voltage of 220V, and an additional special protection mechanism is required to ensure safety. The display module 100 provided by the embodiment of the application adopts direct current power supply input, so that alternating current does not need to be converted into direct current, an additional special protection mechanism does not need to be arranged, and the size of the display module 100 can be reduced.

In addition, the display module 100 adopts high-voltage power supply input, and the external interface current of the display module 100 is reduced compared with the traditional 5V/4.2V input. Taking the display module 100 of 5V and 6A as an example, if the power supply input is changed to 36V in this embodiment, only the current less than 1A is required. The current is reduced, on one hand, the number of external connector pins of the display module 100 is reduced, and thus the cost is reduced; on the other hand, when power supply cascade connection is performed between the display modules 100, more display modules 100 can be cascaded through the same cable or through-current path, so that the cable connection complexity is reduced, and the reliability is improved.

In this embodiment, the display assembly 5 may include a plurality of LED lamp beads. The power supply assembly 6 can comprise a multi-path DC/DC converter, and the multi-path DC/DC converter converts the voltage of the direct-current high-voltage power supply 7 into the voltage required by the LED lamp beads.

In a specific embodiment, the multi-way DC/DC converter is a three-way DC/DC buck converter 61. As shown in fig. 4, the three-way DC/DC buck converter 61 can convert the voltage of the DC high-voltage power supply 7 into three-way voltages of 3.8V, and 2.8V, and respectively supply power to the blue LED lamp bead 51, the green LED lamp bead 52, and the red LED lamp bead 53. Of course, the three-way voltage values may be other values, and when the three-way voltages are 3.8V, and 2.8V, respectively, the energy loss of the display module 100 is the minimum.

This application embodiment is different to the LED lamp pearl pressure drop of different colours, supplies with different voltages respectively, compares in the past and unitedly adopts 5V or 4.2V to supply power for all LED lamp pearls, has reduced the loss of energy, can reduce display module assembly 100's temperature.

In other embodiments, the driving component 4 and the display component 5 may be combined into an LED display driving lamp panel, and the LED display driving lamp panel can implement driving and displaying functions. The LED display driving lamp panel comprises an LED driving chip and an LED lamp panel.

In fig. 1 to 4, arrows may indicate a transmission direction of display data, a transmission direction of current, or a sequence of control flow.

The embodiment of the present application further provides a display system, which includes a plurality of display modules 100, and the control components of adjacent display modules 100 are electrically connected by a high-speed serial interface. That is, the plurality of display modules 100 are cascaded through the high-speed serial interface.

It should be noted that the display module 100 of the present embodiment may be the display module 100 of any of the above embodiments, and for the related detailed description, reference is made to the above contents, which are not repeated herein.

In a specific application scenario, the current display module 100 receives display data through the programmable logic device 1, intercepts image data of the current display module 100, drives the LED lamp beads through the control driving component 4 to complete display output, and forwards the display data to the next display module 100 through the sending end of the programmable logic device 1.

The transceiver of the control assembly takes an LVDS transceiver as an example, the LVDS receiver 2A is configured to receive high-speed serial data to be displayed from outside the display module 100 and decode the high-speed serial data, buffer the decoded data into the SDRAM through the programmable logic device 1, and then the LVDS transmitter 3A reads corresponding display data from the SDRAM and controls the driving assembly 4 to drive the LED lamp bead to complete display output.

It is to be noted that, in the description of the present specification, the meaning of "a plurality" means two or more unless otherwise specified. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A display module is characterized by comprising a control component, a power supply component, a driving component and a display component which are integrated into a whole;

the control assembly is electrically connected with the driving assembly and is used for receiving display data, sending the display data to another display module and controlling the driving assembly to work according to the display data; the driving assembly and the power supply assembly are electrically connected with the display assembly, the driving assembly is used for driving the display assembly to display and output, and the power supply assembly is electrically connected with an external power supply and supplies power to the display assembly.

2. The display module of claim 1,

the control assembly comprises a programmable logic device and at least one pair of transceivers, the transceivers are electrically connected with the programmable logic device, and the transceivers adopt a high-speed serial interface to receive and send the display data; the transceiver comprises a receiver and a transmitter, the receiver is used for receiving the display data from the outside of the display module and decoding the display data, and the transmitter is used for transmitting the display data to a control component of another display module.

3. The display module of claim 2,

the transceiver is integrated within the programmable logic device.

4. The display module according to claim 2 or 3,

the transceivers comprise two pairs of LVDS transceivers, one pair of the LVDS transceivers is used for receiving display data and sending the display data to the other display module, and the other pair of the LVDS transceivers is used for backing up the display data.

5. The display module according to claim 2 or 3,

the control component comprises a synchronous dynamic random access memory electrically connected with the programmable logic device, the programmable logic device caches the decoded display data into the synchronous dynamic random access memory, and reads corresponding display data from the synchronous dynamic random access memory to control the driving component to work.

6. The display module according to claim 2 or 3,

the control component comprises a clock jitter removing unit which is electrically connected between the programmable logic device and the transmitter, and the clock jitter removing unit is used for carrying out clock jitter removing processing on the decoded display data, then carrying out data coding and transmitting the data to the next-stage display module through the transmitter.

7. The display module of claim 1,

the external power supply is a direct-current high-voltage power supply, and the voltage of the direct-current high-voltage power supply is 24-36V.

8. The display module of claim 7,

the display assembly comprises a plurality of LED lamp beads, the power supply assembly comprises a multi-path DC/DC converter, and the multi-path DC/DC converter converts the voltage of the direct-current high-voltage power supply into the voltage required by the LED lamp beads.

9. The display module of claim 8,

the multi-path DC/DC converter is a three-path DC/DC step-down converter, and the three-path DC/DC step-down converter converts the voltage of the direct-current high-voltage power supply into three-path voltages of 3.8V, 3.8V and 2.8V and respectively supplies power to the blue, green and red LED lamp beads.

10. A display system, comprising:

a plurality of display modules according to any one of claims 1-9, the control elements of adjacent display modules being electrically connected using a high speed serial interface.

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