CN220895168U

CN220895168U - Display module and display box

Info

Publication number: CN220895168U
Application number: CN202322680096.8U
Authority: CN
Inventors: 张海雷; 季盼盼; 单雷超
Original assignee: Shenzhen Leyard Optoelectronic Co Ltd
Current assignee: Shenzhen Leyard Optoelectronic Co Ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-05-03
Anticipated expiration: 2033-09-26

Abstract

The utility model discloses a display module and a display box. Wherein, this display module assembly includes: a module interface and a conversion chip; the module interface comprises at least one group of pins, wherein any one group of pins in the at least one group of pins comprises a first pin and a second pin, the first pin is a pin for transmitting a low-voltage differential signal, and the second pin is a power pin; the conversion chip is connected with the first pin and is used for converting the low-voltage differential signals transmitted by the first pin into transistor-transistor logic signals. The utility model solves the technical problems of various types and quantity of wires required for driving the LED display module.

Description

Display module and display box

Technical Field

The utility model relates to the field of display equipment, in particular to a display module and a display box.

Background

The LED Module (Module) is a basic unit of the LED display screen, and may also be called an LED Module or an LED unit board. The LED module is typically composed of a plurality of LED light beads (LED chips) to form a pixel or pixel matrix. The module is responsible for controlling the brightness and the color of the LED lamp beads, so that the display content is displayed. Multiple modules can be combined together to form a complete LED display screen. The module generally has waterproof, dustproof, anti-seismic and other characteristics so as to adapt to different installation environments and application scenes.

In order to drive the LED module to work normally, wires such as a power line, a TTL signal line and the like are required to be connected to the LED module in the related technology, so that the LED display module can be lightened, the equipment line connection is complex, and the occupied space is large.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of utility model

The embodiment of the utility model provides a display module and a display box body, which at least solve the technical problems of various types and quantity of wires required for driving an LED display module.

According to an aspect of an embodiment of the present utility model, there is provided a display module including: a module interface and a conversion chip; the module interface comprises at least one group of pins, wherein any group of pins in the at least one group of pins comprises a first pin and a second pin, the first pin is a pin for transmitting a low-voltage differential signal, and the second pin is a power pin; the conversion chip is connected with the first pin and is used for converting the low-voltage differential signals transmitted by the first pin into transistor-transistor logic signals.

Optionally, the first pin of any one of the at least one set of pins includes a pair of differential input pins and a pair of differential output pins.

Optionally, the at least one group of pins of the module interface is two groups of pins, and the two groups of pins are arranged in a central symmetry manner in the module interface.

Optionally, the module interface is a Type-C interface; the Type-C interface comprises 24 rectangular arrangement pins, wherein the rectangular arrangement pins comprise two groups of pins, and the two groups of pins are arranged in a central symmetry mode around the center of the rectangular arrangement pins.

Optionally, the display module further includes: the driving chip and the decoding chip are electrically connected with the output pins of the conversion chip.

Optionally, the display module further includes: the LED display array is electrically connected with the driving chip and the decoding chip.

According to another aspect of the embodiment of the present utility model, there is also provided a display case, including: a power signal control box and the display module set described in any one of the above; the power signal control box comprises a receiving card and a power supply, wherein the receiving card and the power supply are respectively connected with the display module, and the receiving card is used for providing a low-voltage differential signal for the display module.

Optionally, the display box further includes: and the first end of the transmission line is connected with the power supply signal control box, the second end of the transmission line is connected with the module interface of the display module, and the first end of the transmission line is simultaneously connected with the receiving card and the power supply.

Optionally, the transmission line includes: a signal line and a power line; the signal wire is connected with a first pin of the display module interface, and the power wire is connected with a second pin of the display module interface.

Optionally, the display box further includes: a clasp; one end of the clamping ring is connected to the module interface of the display module, the other end of the clamping ring is movable, and the clamping ring is used for fixing a transmission line inserted on the module interface.

In the embodiment of the utility model, a display module comprising a module interface and a conversion chip is adopted, at least one group of pins are arranged in the module interface, any group of pins in the at least one group of pins comprise a first pin and a second pin, the first pin is a pin for transmitting a low-voltage differential signal, and the second pin is a power pin; the conversion chip is connected with the first pin, and the conversion chip is used for converting low-voltage differential signals transmitted by the first pin into transistor-transistor logic signals, so that the purpose that the module interface simultaneously supports LVDS signal input and power input is achieved, the technical effect of saving wire connection types and quantity of the LED display module is achieved, and the technical problem that the wire types and quantity required for driving the LED display module are various is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

Fig. 1 is a block diagram of a display module according to an embodiment of the present utility model;

Fig. 2 is a schematic diagram illustrating an internal structure of a display module according to an alternative embodiment of the present utility model;

fig. 3 is a block diagram of a display case according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a display case provided in accordance with an alternative embodiment of the present utility model;

Fig. 5 is a schematic view of a fastening manner of a snap ring according to an alternative embodiment of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a block diagram of a display module according to an embodiment of the present utility model, and as shown in fig. 1, the display module 1 includes: a module interface 11 and a conversion chip 12; wherein, the module interface 11 includes at least one group of pins, any one group of pins in the at least one group of pins includes a first pin and a second pin, the first pin is a pin for transmitting a low voltage differential signal, and the second pin is a power pin; the conversion chip 12 is connected to the first pin, and is used for converting the low voltage differential signal transmitted by the first pin into a transistor-transistor logic signal.

Optionally, the module interface of the display module may be connected to a receiving card, so as to obtain a Low Voltage DIFFERENTIAL SIGNALING (abbreviated as LVDS) signal from the receiving card, where the LVDS signal is a Low-power-consumption and high-speed differential signal transmission technology, and is commonly used in applications with high-speed data transmission and strong anti-interference capability. In the related art, a Transistor-Transistor Logic (TTL) signal is used as an image signal in the display module, the TTL signal is based on a digital Logic level standard of a Transistor, and is commonly used for signal transmission and Logic operation in a digital circuit, and 14 to 24 signal lines are required for the display module due to the TTL signal, so that the line connection and arrangement of the module are complex. By adopting LVDS signals, the signal lines required by the display module can be reduced to 2 to 4, and the line pressure of the LED display module is greatly reduced.

The receiver card (RECEIVER CARD) is a control card for an LED display, also referred to as a receiver card or receiver board. It is responsible for receiving video, image, text, etc. signals from a transmitter card (SENDER CARD) or other data source and converting it into a signal recognizable by the LED display. The receiving card typically contains a plurality of input interfaces, such as DVI, HDMI, VGA or the like, for connecting to different types of data sources. The received signals are decoded, processed and distributed, and then the data are sent to the LED module for display. The receiving card is a control card for receiving and processing signals from the sending card or other data sources and sending the signals to the LED module; the module is a basic unit of the LED display screen and is responsible for controlling the brightness and the color of the LED lamp beads so as to realize the display of display contents.

The utility model is beneficial to adopting a brand new signal transmission mode, abandoning the traditional TTL signal transmission mode from the receiving card to the module, adopting the signal transmission mode of LVDS differential signals, analyzing TTL signals used by the LED display screen module by the LVDS conversion chip after the signals are input to the display module, and completing the lighting of the module by using at most 3 groups of signal pairs and at least 1 group of signal pairs in the process.

Based on the display module, the purpose that the module interface simultaneously supports LVDS signal input and power input is achieved, so that the technical effect of saving the wire connection types and the wire connection quantity of the LED display module is achieved, and the technical problem that the wire types and the wire quantity required for driving the LED display module are various is solved.

As an alternative embodiment, the first pin of any one of the at least one set of pins includes a pair of differential input pins and a pair of differential output pins. Optionally, in cooperation with a pair of differential input pins and a pair of differential output pins, the conversion chip may include a differential input pin and a differential output pin, where the differential input pin includes an rx+ pin and an RX-pin for receiving positive and negative levels of the LVDS signal. The differential output pins include a tx+ pin and a TX-pin for transmitting positive and negative levels of the LVDS signal.

The RX+ and RX pins are used for receiving differential signals from a controller or other source devices, and the signals are converted into digital signals through an LVDS conversion chip for use by a display module. The TX+ and TX pins are used for converting differential signals from the display module into LVDS signals through an LVDS conversion chip and then transmitting the LVDS signals to a controller or other target devices.

By utilizing the advantages of differential signal transmission, the LVDS conversion chip can provide better anti-interference performance and noise suppression capability in the data transmission process. The voltage difference between the RX+ and RX-pins and the TX+ and TX-pins is an important component of the differential signal to reduce noise effects during transmission and improve stability and reliability of data transmission.

As an alternative embodiment, at least one group of pins of the module interface is two groups of pins, and the two groups of pins are arranged in a central symmetry manner in the module interface. By the mode, the problem of positive and negative plug errors of the module interface can be solved, and the foolproof problem of the interface is solved.

As an alternative embodiment, the module interface may be a Type-C interface; the Type-C interface comprises 24 rectangular arrangement pins, wherein the rectangular arrangement pins comprise two groups of pins, and the two groups of pins are arranged in a central symmetry mode around the center of the rectangular arrangement pins.

Optionally, the module interface of the display module can adopt a TypeC data interface (24 Pin) at the same time, two-in-one of signal power supply is realized through power supply and signal arrangement, and blind plug operation in the LED display screen industry in the true sense is realized, so that the problem of fool-proofing of the interface is avoided.

Fig. 2 is a schematic diagram of an internal structure of a display module according to an alternative embodiment of the present utility model, as shown in fig. 2, in which at most 3 groups of 6 signal lines are required to complete the conversion of all TTL level signals required for lighting the display module, and if the chip type and the function are reduced, only 1 group of 2 signal lines are required to complete the lighting of the module. And the TTL level signal converted by the module interface and the conversion chip is consistent with the traditional module connection mode without obvious change. In fig. 2, the module 1 further includes a bi-directional tri-state buffer 14, for example, the bi-directional tri-state buffer 14 may be 245buffer, which is a commonly used digital logic Integrated Circuit (IC), also referred to as a "bi-directional tri-state buffer" or a "bi-directional driver". It enables bi-directional data transfer with input and output control signals that can provide a high impedance state (i.e., tri-state) between the input and output so that multiple devices share the data line. 245 buffers are commonly used for driving and receiving data buses, such as data transfers between microprocessors and external devices. It can provide high speed, low power consumption and interface compatibility, and is one of the commonly used integrated circuits in digital systems.

The TTL_DCLK signal is generally referred to as a TTL clock signal. The ttl_dclk signal is a clock signal under the TTL logic level standard. The clock signal plays a role in synchronization and timing in the digital circuit. The TTL_DCLK signal is typically used for timing control, synchronous data transfer, clock triggering, and sequential logic applications. In the module interface, the LED array drives the row signal LA, LB, LC, LD, LE; DCLK, GCLK, LAT the key signal is a multiplexed signal. DATA0 through DATA11 correspond to different LED arrays, respectively.

It can be understood that the larger the resolution of the LED display module, the more LED arrays are required, so that the larger the number of DATA signals is required, and the larger the number of PIN PINs of the module interface is in the TTL circuit driving mode, so that more signal lines are required in the related art, and the circuit is complicated.

Table 1 shows pin arrangements of Type-C interfaces according to alternative embodiments of the present utility model, as shown in Table 1, VCC and GND represent power-related pins, i.e., second pins; a+, A-, B+, B-, C+ and C-are the first pins, i.e., LVDS signal pins. A1 to A12 represent the stitch numbers of the first row, and B1 to B12 represent the stitch numbers of the second row. In the embodiment shown in table 1, the pins of A1-A6 and B7-B12 are the first group of pins, the pins of A7-a 12 and B1-B6 are the second group of pins, and the first group of pins and the second group of pins are arranged in a central symmetry manner, so that when a user inserts the circuit of the module interface, both the forward and reverse insertion can correctly transmit signals and supply power, the problem that the two power signals are combined into one body to realize the forward and reverse blind insertion is realized, and the random pulling and inserting of the two ends of the wire rod can meet the requirement that the signal transmission can not cause the forward and reverse short circuit to generate the burn-in phenomenon.

TABLE 1Type-C interface stitch arrangement

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

VCC

A+

A-

B+

B-

C+

C-

GND

C-

C+

B-

B+

A-

A+

VCC

B12

B11

B10

B9

B8

B7

B6

B5

B4

B3

B2

B1

As an alternative embodiment, the display module further includes a driving chip 13 and a decoding chip, where the driving chip 13 and the decoding chip are electrically connected to the output pins of the conversion chip.

As an alternative embodiment, the display module further comprises a light emitting diode display array, wherein the light emitting diode display array is electrically connected to the driving chip 13 and the decoding chip.

Fig. 3 is a block diagram of a display case provided according to an embodiment of the present utility model, and as shown in fig. 3, the display case 3 includes: a power signal control box 31 and the display module 1 of any one of the above; the power signal control box 31 includes a receiving card 32 and a power source 33, the receiving card 32 and the power source 33 are respectively connected with the display module 1, and the receiving card 32 is used for providing a low voltage differential signal for the display module 1.

As an alternative embodiment, the display box further comprises a transmission line 34, wherein a first end of the transmission line 34 is connected to the power signal control box 31, a second end is connected to the module interface of the display module 1, and a first end of the transmission line 34 is connected to the receiving card 32 and the power source 33 at the same time.

Fig. 4 is a schematic diagram of a display box provided according to an alternative embodiment of the present utility model, in which a receiving card 32 and a power supply 33 may be integrated in a power signal control box 31, and display signals and power are provided to a display module through a transmission line 34. The two ends of the transmission line 34 may have the same interface structure, alternatively, may be both Type-C interfaces, in which pins are arranged as shown in table 1, a first pin is connected to the receiving card 32, and a second pin is connected to the power supply 33. The snap ring 35 is used for fixing the transmission line and the module interface of the display module.

As an alternative embodiment, the transmission line includes a signal line and a power line; the signal wire is connected with a first pin of the display module interface, and the power wire is connected with a second pin of the display module interface.

As an alternative embodiment, the display case further includes: a clasp 35; one end of the clamping ring is connected to the module interface of the display module, the other end of the clamping ring is movable, and the clamping ring is used for fixing a transmission line inserted on the module interface. Fig. 5 is a schematic view of a fastening manner of a snap ring according to an alternative embodiment of the present utility model.

According to the driving principle, the LED display module disclosed by the utility model is capable of reducing the number of PIN communicated with the signal port of the module to 4PIN at least by using the LVDS signal driving method.

The LED module consists of a plurality of LED arrays, and the number of PIN PINs of a port of the LED module is simplified by converting LVDS into TTL drive, so that the requirement of simplifying the module interface of a future high-density LED display product is met.

The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present utility model, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a non-volatile storage medium. Based on such understanding, the technical solution of the present utility model may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present utility model. And the aforementioned storage medium includes: a usb disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. A display module, comprising: a module interface and a conversion chip; wherein,

The module interface comprises at least one group of pins, wherein any one group of pins in the at least one group of pins comprises a first pin and a second pin, the first pin is a pin for transmitting a low-voltage differential signal, and the second pin is a power pin;

The conversion chip is connected with the first pin and is used for converting the low-voltage differential signals transmitted by the first pin into transistor-transistor logic signals.

2. The display module of claim 1, wherein the first pin of any one of the at least one set of pins comprises a pair of differential input pins and a pair of differential output pins.

3. The display module of claim 1, wherein the at least one set of pins of the module interface is two sets of pins, the two sets of pins being arranged in a central symmetry in the module interface.

4. A display module according to claim 3, wherein the module interface is a Type-C interface;

the Type-C interface comprises 24 rectangular arrangement pins, wherein the rectangular arrangement pins comprise two groups of pins, and the two groups of pins are arranged in a central symmetry mode around the center of the rectangular arrangement pins.

5. The display module of claim 1, wherein the display module further comprises:

The driving chip and the decoding chip are electrically connected with the output pins of the conversion chip.

6. The display module of claim 5, wherein the display module further comprises:

The LED display array is electrically connected with the driving chip and the decoding chip.

7. A display case, comprising: a power signal control box and the display module set according to any one of claims 1 to 6; wherein,

The power signal control box comprises a receiving card and a power supply, wherein the receiving card and the power supply are respectively connected with the display module, and the receiving card is used for providing a low-voltage differential signal for the display module.

8. The display case of claim 7, further comprising:

And the first end of the transmission line is connected with the power supply signal control box, the second end of the transmission line is connected with the module interface of the display module, and the first end of the transmission line is simultaneously connected with the receiving card and the power supply.

9. The display enclosure of claim 8, wherein the transmission line comprises: a signal line and a power line; wherein,

The signal wire is connected with a first pin of the display module group interface, and the power wire is connected with a second pin of the display module group interface.

10. The display case of claim 8, further comprising: a clasp; one end of the clamping ring is connected to the module interface of the display module, the other end of the clamping ring is movable, and the clamping ring is used for fixing a transmission line inserted on the module interface.