CN210223511U

CN210223511U - Display driving board

Info

Publication number: CN210223511U
Application number: CN201921427668.9U
Authority: CN
Inventors: Haibin Wu; 吴海彬; Ming Ouyang; 欧阳明
Original assignee: Shenzhen Jiarun Original Xinxian Technology Co Ltd
Current assignee: Shenzhen Jiarun Original Xinxian Technology Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-03-31
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a display drive board, which is applied to display equipment, wherein the display drive board comprises a USB concentrator and a display drive chip, a controlled end of the USB concentrator is connected with a control end of the display drive chip, and an output end of the display drive chip is connected with the display equipment; the USB concentrator comprises a plurality of USB interfaces and a USB TYPE-C interface, and the output end of the USB TYPE-C interface is connected with the input end of the display driving chip; the display driving chip is used for decoding, converting and outputting the received video signal to the display equipment; the display driving chip comprises a key control module, and the key control module is used for controlling the connection of the USB interface in the USB concentrator. The utility model discloses technical scheme has promoted the convenience that the display device board was applied to.

Description

Display driving board

Technical Field

The utility model relates to a show drive technical field, in particular to show drive plate.

Background

In daily life, electronic products such as computers and mobile phones are an indispensable part, a display of the computer is provided with a display driving board, and the general display driving board is provided with a video signal receiving end, an MCU (microprogrammed control unit) and a signal output end. As the port of the signal source, most PC hosts are provided with a plurality of USB interfaces, a plurality of video signal output interfaces and a wired network interface. Sometimes, it can be seen that a common display is collocated with a plurality of PC hosts, or a common display is collocated with a PC host and a notebook computer, that is, a plurality of video signals are all accessed into a display, and each host may be configured with a set of keyboard, mouse and wired network interface. When one display operates a plurality of hosts, the signal input port of the display needs to be replaced first, and then the corresponding keyboard and mouse are found to operate the host.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a display drive board aims at promoting the convenience that display drive board was applied to display device.

In order to achieve the above object, the present invention provides a display driving board for a display device, wherein the display driving board includes a USB hub and a display driving chip, a controlled end of the USB hub is connected to a control end of the display driving chip, and an output end of the display driving chip is connected to the display device;

the USB concentrator comprises a plurality of USB interfaces and a USB TYPE-C interface, and the output end of the USB TYPE-C interface is connected with the input end of the display driving chip;

the display driving chip is used for decoding, converting and outputting the received video signals to the display equipment; wherein the content of the first and second substances,

the display driving chip comprises a key control module, and the key control module is used for controlling the connection of the USB interface in the USB concentrator.

Optionally, the display driver board further comprises a network signal converter, and the network signal converter is connected with the USB hub;

the network signal converter is used for receiving wired network signals and converting the wired network signals into USB data signals so as to output the USB data signals to the USB hub.

Optionally, the network signal converter includes an RJ45 network interface, a signal conversion chip, and a USB output interface, an output end of the RJ45 network interface is connected to an input end of the signal conversion chip, and an output end of the signal conversion chip is connected to the USB output interface;

the RJ45 network interface is used for receiving a wired network signal and outputting the received wired network signal to the signal conversion chip;

the signal conversion chip is used for converting the input wired network signal into a USB data signal and outputting the converted USB data signal to the USB output interface;

and the USB output interface is used for outputting the converted USB data signal to the USB hub.

Optionally, the USB hub further comprises a USB TYPE-a interface and a USB TYPE-B interface.

Optionally, the display driver chip further includes a VGA interface for inputting an analog signal, and outputting the analog signal to the display device through the conversion processing of the display driver chip.

Optionally, the display driver chip further includes an HDMI interface, configured to input a video signal, and output the video signal to the display device through the conversion processing of the display driver chip.

Optionally, the display driver chip further includes a DP interface, configured to input a video signal, and output the video signal to the display device through the conversion processing of the display driver chip.

Optionally, the key control module is an elastic key or an induction key.

The technical scheme of the utility model is that the display driving board comprises a USB concentrator and a display driving chip, the controlled end of the USB concentrator is connected with the control end of the display driving chip, and the output end of the display driving chip is connected with the display device; compared with the prior display driving board, the display driving board is provided with a video signal receiving end, an MCU and a signal output end, and the signal ports are provided with a plurality of USB interfaces, a plurality of video signal output interfaces and a wired network interface. When one display is connected with a plurality of hosts, the equipment connection is complex and the operation is complex. According to the scheme, a USB concentrator, a display driving chip and the like are integrated on a display driving board, a plurality of USB interfaces are directly arranged on the USB concentrator, any equipment adopting USB connection can be directly connected, a video signal is output to the display driving chip through a USB TYPE-C interface on the USB concentrator, and the display driving chip decodes, converts and outputs the received video signal to the display equipment; the display driver chip has a key control module that can control the connection of the USB interface of the USB hub, that is, control the connection of the upstream port of the USB hub and each host. Therefore, the problem that the signal input port of the display needs to be replaced first when a plurality of hosts are operated is solved, and a plurality of sets of keyboards and mice are not needed. The utility model discloses technical scheme has promoted the convenience that the display device board was applied to.

Drawings

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

Fig. 1 is a schematic structural diagram of an embodiment of a display driving board according to the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Network signal converter	23	USB TYPE-B interface
20	USB concentrator	24	USB TYPE-C interface
				30	Display driving chip	31	VGA interface
40	Display device	32	HDMI interface
				11	RJ45 network interface	33	DP interface
21	USB interface	34	Key control module
				22	USB TYPE-A connectsMouth piece

The realization, the functional characteristics and the feasible points of the utility model are further explained by referring to the attached drawings.

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.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a display drive board is applied to display device.

In an embodiment of the present invention, as shown in fig. 1, the display driver board includes a USB hub 20 and a display driver chip 30, a controlled end of the USB hub 20 is connected to a control end of the display driver chip 30, and an output end of the display driver chip 30 is connected to the display device 40;

the USB hub 20 includes a plurality of USB interfaces 21 and a USB TYPE-C interface 24, and an output end of the USB TYPE-C interface 24 is connected to an input end of the display driver chip 30;

the display driving chip 30 is configured to perform decoding conversion processing on the received video signal and output the decoded video signal to the display device 40; wherein the content of the first and second substances,

the display driver chip 30 includes a key control module 34, and the key control module 34 is configured to control connection of the USB interface in the USB hub 20.

In the present embodiment, the USB HUB 20 (i.e., USB HUB) refers to a device that can expand one USB interface 21 into a plurality of interfaces and can use the interfaces simultaneously. The USB HUB 20 may be classified into USB2.0HUB, USB3.0 HUB, USB3.1 HUB, etc. according to the USB protocol. Further, usb (universal serial bus), which is a universal serial bus, is also called a universal serial interface; hub is a Hub that connects multiple USB interface 21 devices using a star topology. The USB stub may be connected to a computer desk lamp, a computer fan, an MP3, a USB disk, a recording pen, a digital camera, etc., and may expand one USB interface 21 into a plurality of USB interfaces 21 that work independently. The display driving board with the USB concentrator can be directly adopted in the scheme, the USB concentrator 20 does not need an external power supply, is directly connected with a computer, is automatically identified and installed by the computer, does not need a driving program, is plug-and-play, can be plugged and pulled freely, supports USB2.0, and has the speed of 480 Mbps. It is understood that the number of USB ports on the USB hub 20 may be 2, 3, 5, etc., and may be set according to the size of the USB hub, which is not limited herein.

The display driver chip 30 is a main part of the display screen imaging system, and integrates components such as resistors, regulators, comparators, and power transistors, including the LCD module and the display subsystem, and is responsible for driving the display and controlling the driving current.

The USB TYPE-C interface 24 is created based on the USB3.1 standard, is pluggable on two sides, has the transmission speed of 10Gbps, and can also achieve the power supply capacity of 100W. The USB TYPE-C is a connection interface of the USB interface 21, can be inserted without dividing the front and back sides, has a size of about 8.3mm × 2.5mm, and supports the functions of charging, data transmission, display output and the like of the USB standard as other interfaces. It can be understood that, in the present embodiment, the USB hub 20 and the current display driver chip 30 are connected through the USB TYPE-C interface 24, so as to implement transmission of the switching control signal of the signal display driver chip 30, so that the display driver chip 30 can control the USB interface 21 accessed by the USB hub 20, that is, control different host connections.

In this embodiment, the USB hub 20 and the display driver chip 30 are integrated into one display driver board, that is, a plurality of USB interfaces 21 and USB TYPE-C interfaces 24 of the USB hub 20 receive externally input data signals, and then the externally input data signals are output to the display driver chip 30 through the USB TYPE-C interfaces 24, and are decoded and converted to be provided to the display device 40 to display a picture to be displayed. It can be understood that the control signal input to the USB hub 20 through each USB interface 21 may be a data signal output by each PC host, may be a data signal output by a digital camera, and may also be a data signal output by an intelligent terminal such as a mobile phone and a tablet computer; the data signal output by the USB TYPE-C interface 24 is a DP video signal, and the display device 40 may be an LCD display, a PDP display, an OLED display, etc., without limitation.

It should be noted that, when a plurality of computer hosts are required to be connected to a display, the plurality of computer hosts can be directly connected to the plurality of host computers through the USB hub 20 on the display drive board, and the plurality of host computers only need one set of keyboard, mouse and wired network interface to be connected to the USB hub 20, the keyboard, mouse and wired network connection is realized through the USB hub 20 and each computer host is connected to a display through the USB hub 20, and the connection of the USB interface in the USB hub 20 is controlled through the key control module 34 on the display drive chip 30, so that the connection of each computer host and the display is respectively realized to realize switching control. It can be understood that a plurality of computer hosts can be connected with a set of keyboard, mouse and wired network interface through the USB port on the USB hub, so that when the key control module 34 on the display driver chip 30 controls the connection of the USB interface in the USB hub 20, the connection of the keyboard, the mouse and the wired network interface is switched to the connected computer hosts. Therefore, the problem that the signal input port of the display is replaced first and then the corresponding keyboard and mouse are found to operate the display is solved, and convenience of applying the display driving board to the display equipment 40 is improved.

The technical scheme of the utility model is that the display driving board comprises a USB concentrator 20 and a display driving chip 30, the controlled end of the USB concentrator 20 is connected with the control end of the display driving chip 30, and the output end of the display driving chip 30 is connected with the display device 40; compared with the prior display driving board, the display driving board is provided with a video signal receiving end, an MCU and a signal output end, and the signal ports are provided with a plurality of USB interfaces 21, a plurality of video signal output interfaces and a wired network interface. When one display is connected with a plurality of hosts, the equipment connection is complex and the operation is complex. According to the scheme, the USB hub 20, the display driving chip 30 and the like are integrated on one display driving board, a plurality of USB interfaces 21 are directly arranged on the USB hub 20, any equipment adopting USB connection can be directly connected, then a video signal is output to the display driving chip 30 through a USB TYPE-C interface 24 on the USB hub 20, and the display driving chip 30 decodes, converts and outputs the received video signal to the display equipment 40; the key control module 34 of the driver chip 30 is shown here to control the connection of the USB interface 21 on the USB hub 20, that is, to control the connection of the upstream port of the USB hub 20 and each host. Therefore, the problem that the signal input port of the display needs to be replaced first when a plurality of hosts are operated is solved, and a plurality of sets of keyboards and mice are not needed. The utility model discloses technical scheme has promoted the convenience that the display drive board was applied to display device 40.

In the above embodiment, as shown in fig. 1, the display driver board further includes a network signal converter 10, and the network signal converter 10 is connected to the USB hub 20;

the network signal converter 10 is configured to receive a wired network signal and convert the wired network signal into a USB data signal for outputting to the USB hub 20.

In this embodiment, the network signal converter 10 includes an RJ45 network interface 11, a signal conversion chip (not shown in the figure) and a USB output interface (not shown in the figure), an output terminal of the RJ45 network interface 11 is connected to an input terminal of the signal conversion chip, and an output terminal of the signal conversion chip is connected to the USB output interface;

the RJ45 network interface 11 is configured to receive a wired network signal and output the received wired network signal to the signal conversion chip;

the USB output interface is configured to output the converted USB data signal to the USB hub 20.

It can be understood that the wired network signal is input through the RJ45 network interface 11 of the network signal converter 10, and the signal conversion chip in the network signal converter 10 converts the received wired network signal into a USB data signal, and outputs the USB data signal to the USB hub 20 through the USB output interface of the network signal converter 10, so that the wired network signal is transmitted to the host computer through the USB interface 21 of the USB hub 20.

In the above embodiment, as shown in fig. 1, the USB hub 20 further includes a USB TYPE-a interface 22 and a USB TYPE-B interface 23.

It will be appreciated that the USB TYPE-a interface 22 is suitable for use in personal computers PC and cell phone adapters, and that currently used computers are compatible with such interfaces, including mice and USB disks, which are also TYPE-a interfaces. USB TYPE-a has evolved to the standard of USB3.0, and the interface under the USB3.0 standard has a transmission speed more than 8 times higher than that of USB 2.0. However, most USBTYPE-A in the market is also the USB2.0 standard, and the best method for distinguishing the USBTYPE-A can be used for judging whether the interface of the USBTYPE-A is provided with blue decorations (contained above USB 3.0). The USB plug on the computer is a type a connector, which is shaped as a well-recognized rectangle. Type a sockets (female) are typically present on a head-end device, such as a host or hub, and type a plugs (male) are typically used on a cable or a smaller peripheral device, such as a mouse, keyboard, or flash memory.

The USB TYPE-B interface 23 is generally applied to data transmission of many printers, displays, and scanners. The TYPE B socket is square in shape and requires a USB TYPE-A to USB TYPE-B cable.

In this embodiment, the external mobile terminal can be connected to the USB hub 20 through the USB TYPE-a interface 22 and the USB TYPE-B interface 23, so as to transmit the data signal. It is understood that the USB TYPE-a interface 22 and USB TYPE-B interface are bi-directional, and can implement data input and data output.

In an embodiment, as shown in fig. 1, the display driver chip 30 further includes a VGA interface 31 for inputting an analog signal and outputting the analog signal to the display device 40 through the conversion process of the display driver chip 30.

In this embodiment, the VGA interface 31, i.e., a Video Graphics Array (Video Graphics Array), has the advantages of high resolution, fast display speed, rich colors, and the like. The VGA interface 31 is a special interface for outputting data by adopting VGA standard in computer, and is not only a standard interface of the CRT display device 40, but also a standard interface of the LCD display device 40, and has a wide application range. It is understood that the VGA standard refers to a computer display standard that uses analog signals. The VGA interface 31 has a total of 15 pins, is divided into 3 rows of 5 holes each, and transmits red, green and blue analog signals as well as synchronization signals (horizontal and vertical signals).

Most computers are connected with the external display device 40 through the analog VGA interface 31, and display image information generated in a digital manner inside the computers is converted into R, G, B three primary color signals and line and field synchronization signals by a digital/analog converter in the display card, and the signals are transmitted to the display device 40 through a cable. For an analog display device 40, such as an analog CRT display, the signals are fed directly to the corresponding processing circuitry to drive and control the picture tube to produce the image.

In an embodiment, as shown in fig. 1, the display driver chip 30 further includes an HDMI interface 32, configured to input a video signal, and output the video signal to the display device 40 through the conversion process of the display driver chip 30.

In this embodiment, the HDMI interface 32, i.e., a High Definition multimedia interface (High Definition multimedia interface), is a fully digital video and audio transmission interface, and can transmit uncompressed audio and video signals. HDMI can be used in set-top boxes, DVD players, personal computers, digital stereos, televisions, and the like. HDMI can send audio frequency and video signal simultaneously, because audio frequency and video signal adopt same wire rod, has greatly simplified the installation degree of difficulty of system's circuit.

In an embodiment, as shown in fig. 1, the display driver chip 30 further includes a DP interface 33, configured to output an input video signal to the display device 40 through a conversion process of the display driver chip 30.

In this embodiment, the DP interface 33, i.e. DisplayPort, is a standardized digital video interface standard. The interface is used for connecting a video source with a display and the like, and also supports carrying audio, USB and other forms of data. The interface is backward compatible with legacy interfaces (e.g., HDMI and DVI) through active or passive adapters.

In the above embodiment, the key control module 34 is an elastic key or an inductive key, and may also be other switch modules capable of implementing a switching function, which is not limited herein.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A display driving board is applied to display equipment and is characterized in that the display driving board comprises a USB concentrator and a display driving chip, a controlled end of the USB concentrator is connected with a control end of the display driving chip, and an output end of the display driving chip is connected to the display equipment;

2. The display driver board of claim 1, wherein the display driver board further comprises a network signal translator, the network signal translator interconnected with the USB hub;

3. The display driver board of claim 2, wherein the network signal converter comprises an RJ45 network interface, a signal conversion chip, and a USB output interface, wherein an output terminal of the RJ45 network interface is connected to an input terminal of the signal conversion chip, and an output terminal of the signal conversion chip is connected to the USB output interface;

4. The display driver board of claim 1, wherein the USB hub further comprises a USB TYPE-a interface and a USB TYPE-B interface.

5. The display driver board according to claim 1, wherein the display driver chip further includes a VGA interface for inputting an analog signal and outputting the analog signal to the display device through the conversion process of the display driver chip.

6. The display driver board according to claim 1, wherein the display driver chip further includes an HDMI interface for inputting a video signal and outputting the video signal to the display device through the conversion process of the display driver chip.

7. The display driver board according to claim 1, wherein the display driver chip further comprises a DP interface for inputting a video signal and outputting to the display device through a conversion process of the display driver chip.

8. The display driver board according to any one of claims 1 to 7, wherein the key control module is an elastic key or an inductive key.