CN213339619U

CN213339619U - Multi-screen display driving device

Info

Publication number: CN213339619U
Application number: CN202022448009.2U
Authority: CN
Inventors: 顾荣华; 王楚楚
Original assignee: Hua Zhixin Electronics Co ltd
Current assignee: Hua Zhixin Electronics Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-01
Anticipated expiration: 2030-10-29

Abstract

The application discloses a multi-screen display driving device, which comprises a first display screen, a second display screen, a display driving module, a Type-C communication module, a power supply control module and a power supply module; the display driving module and the Type-C communication module are mutually and electrically connected and are arranged on the same PCB, and the first display screen, the second display screen, the power supply control module and the power supply module are all electrically connected with the PCB; the power supply module comprises at least two power supply units, and the power supply control module is used for controlling power supply management and distribution of each power supply unit of the power supply module. This application has formed a new product form through carrying out the integrated design with demonstration drive module and communication module to it is many to have solved current scheme wire rod, and the power is many, and the problem that system reliability is low.

Description

Multi-screen display driving device

Technical Field

The utility model belongs to the display field, concretely relates to many screen display show ware based on Type-C shows drive arrangement that carries out synchronization, extension or asynchronous display.

Background

In scenes such as home entertainment, office design, business meetings, supermarkets, banks and the like, data such as videos, pictures, PPTs and the like are frequently required to be shared, or multiple screens are expanded for convenient design, a conventional method is shown in fig. 1, an independent Type-C communication board at the front end transmits images to 2 independent displays or display modules through 2 DP or HDMI wires, and the images are combined for use. The method is rather complicated, inconvenient to use, and has the defects of disordered wires, various power supplies, high cost and the like. Therefore, there is a need for improvements in the art that improve the user experience.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary of embodiments of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that the following summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The utility model belongs to the display field relates to a can drive 2 display screens simultaneously through Type-C single line image transmission, including the original display screen of system, 3 display screens carry out synchronous, extension or asynchronous display's display system altogether. The method can be used for scenes such as office work, design, games and meetings.

According to one aspect of the application, a multi-screen display driving device is provided, which comprises a first display screen, a second display screen, a display driving module, a Type-C communication module, a power supply control module and a power supply module; the display driving module and the Type-C communication module are mutually and electrically connected and are arranged on the same PCB, and the first display screen, the second display screen, the power supply control module and the power supply module are all electrically connected with the PCB; the power supply module comprises at least two power supply units, and the power supply control module is used for controlling power supply management and distribution of each power supply unit of the power supply module.

Further, the power module is a stand-alone power module, which is relatively independent from the PCB board, and may include an internal power board or an external adapter in some forms.

As a possible solution, one of the power supply units of the power supply module supplies power to the first display screen, and the other of the power supply units of the power supply module supplies power to the second display screen.

As a possible solution, the power control module is implemented by using a chip with a model of CMS8S5880 and its follower circuit.

Further, the display driving module is implemented by a chip with model number RTD 2556T; the Type-C communication module is realized by adopting a USB-C signal converter with the Type RTS 3368. Further preferably, the display driving module and the Type-C communication module are connected through an HDMI interface, and the connection is completed when the PCB is designed, so that additional wires are not needed.

Furthermore, the Type-C communication module comprises a communication module and a signal conversion module which are electrically connected with each other, the communication module is used for communicating with an external source device (such as a PC or a mobile phone), receiving DP image signals sent by a system, converting the DP image signals into HDMI signals through the signal conversion module, and sending the HDMI signals to the display driving module for display. The communication module is communicated with external source equipment through a Type-C protocol and transmits image data.

Further, the data interface of the display driving module includes LVDS, eDP and Vby1 interfaces.

The utility model discloses with each submodule piece design of integrating, compare with prior art, have following advantage:

1. the Type-C protocol module and the display driving module are designed on the same PCB, so that the design of the PCB is finished, no additional wire is needed, external wires and space are saved, and the production and the assembly are greatly facilitated;

2. the power supply module is set to be an independent module and is divided into a plurality of power supply units (the number of the power supply units can be set according to the number of the display screens), and the power supply control module is used for uniformly optimizing power supply management of the power supply module, so that the cost is saved, the system reliability is improved, and the power consumption is reduced.

In conclusion, the display driving module and the communication module are integrally designed, a new product form is formed, and the problems that wires are multiple, power supplies are multiple and the system reliability is low in the existing scheme are solved.

Drawings

The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used to designate like or similar parts throughout the figures thereof. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to explain the principles and advantages of the invention. In the drawings:

FIG. 1 illustrates a prior art multiple display screen projection approach;

FIG. 2 is a screen projection mode of the multi-screen display driving apparatus according to the present application;

FIG. 3 is a schematic circuit diagram of the multi-screen display driving apparatus of the present application;

FIG. 4 is a first schematic circuit diagram of the Type-C communication module according to the present embodiment;

FIG. 5 is a second schematic circuit diagram of the Type-C communication module according to the present embodiment;

FIG. 6 is a third schematic circuit diagram of the Type-C communication module in this embodiment;

FIG. 7 is a schematic diagram of a USB power supply circuit of the power module in this embodiment;

FIG. 8 is a schematic circuit diagram of a power control module according to the present embodiment;

fig. 9 is a schematic circuit diagram of the first power supply unit in the present embodiment;

fig. 10 is a schematic circuit diagram of the second power supply unit in this embodiment.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and descriptions have omitted, for the sake of clarity, the representation and description of components and processes that are not relevant to the present invention and known to those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, in the prior art, a conventional method for adding 2 display screens to a screen is to set an independent Type-C communication board (Type-C communication module) at the front end of a PC, the PC is linked with the Type-C communication board through a Type-C wire, then the Type-C communication board is connected to two display screens (display module 2 and display module 3) through 2 DP or HDMI wires, respectively, and an image is transmitted to the 2 independent display screens, so as to be combined for use. The method is rather complicated, and when in use, the wire connection is complex, and the wire is messy, so the use is inconvenient.

The present application is an improvement over the above-described problems. The utility model discloses a through carrying out the integrated design with demonstration drive module and communication module, formed a new product form to it is many to have solved current scheme wire rod, and the power is many, problem that system reliability is low. Referring to fig. 2, the utility model discloses only need directly be connected to two display module that add through Type-C wire rod can.

The above design concept is illustrated by the following specific examples. Referring to fig. 3, the utility model discloses a many screen display show ware drive arrangement, including Type-C communication module (Switch), first display screen (SCALAR L), second display Screen (SCALAR), show drive module, power control module (the model is CMS8S 5880' S MCU) and power module, wherein, show drive module and Type-C communication module electricity each other and connect to set up on same PCB board, first display screen, second display screen, power control module and power module all are connected with this PCB board electricity. In this embodiment, the power module includes two power supply units (denoted as a first power supply unit and a second power supply unit), where the first power supply unit supplies power to the first display screen, and the second power supply unit supplies power to the second display screen. The power control module is used for controlling power management and distribution of each power supply unit of the power module. The power supply unit may be in the form of an internal power supply board or an external adapter

Referring to fig. 4-6, the Type-C communication module is implemented by a USB-C signal converter with model Z6-3_ Switch. The Type-C communication and signal conversion module is responsible for: 1. communicating with external source equipment to establish connection; 2. converting the DP signal into an HDMI signal and sending the HDMI signal to a rear-end display module; 3. the maximum charging voltage and current of 5V/500mA are provided for the external.

The Type-C communication module comprises a communication module and a signal conversion module which are electrically connected with each other, the communication module is used for communicating with external source equipment (such as a PC (personal computer) or a mobile phone), receiving DP (digital signal) image signals sent by a system, converting the DP image signals into HDMI (high-definition multimedia interface) signals through the signal conversion module, and sending the HDMI signals to the display driving module for display. The communication module is communicated with external source equipment through a Type-C protocol and transmits image data.

Through HDMI interface connection between display driver module and the Type-C communication module, this part just has been accomplished when PCB design, need not extra wire rod.

The display driving module is mainly responsible for: receiving a video signal sent by a communication module, completing decoding and rendering picture quality; secondly, user interaction such as key operation response and the like is achieved; display driving and backlight driving of the liquid crystal display, and possible data interfaces of the display comprise LVDS, eDP and Vby 1. Resolutions include, but are not limited to, 4096x2160, 2560x1440, 1920x1080, and the like.

Referring to fig. 7, in this embodiment, the power module further includes a USB power supply circuit, and fig. 7 is a circuit schematic diagram of the USB power supply circuit and the interface, which is implemented by using a USB Type-C chip and a follower circuit thereof.

The power control module is used for being responsible for turning on or turning off the overall power supply, and in this embodiment, referring to fig. 8, the power control module is implemented by using a chip of a CMS8S5880 model and a follower circuit thereof.

Fig. 9 and 10 are schematic circuit diagrams of the first power supply unit and the second power supply unit, respectively.

In the scheme, the display driving module and the Type-C communication module are integrated and designed on the same PCB, and the power supply module is independent from the PCB and is responsible for energy supply of the whole system; the power control module is responsible for power management and distribution of each module of the system, so that energy consumption is saved; the signal output of the communication module is directly connected to the signal input port of the display module, such as HDMI, the signal output is completed when the PCB is designed, no extra wires are needed, and the display driving module can respond to a remote controller and keys, so that response and feedback to user operation are realized.

As a specific example, the first display screen ((SCALAR L) and the second display Screen (SCALAR) of the multi-screen display driving device are both realized by using a chip with the model number of RTD2556T, when in use, the driving module at the PC end in the prior art is replaced by the PCB which is composed of the display driving module and the Type-C communication module, the PCB is connected with an external source device through a Type-C wire rod, and the first display screen and the second display screen are connected with the PC end, so that the multi-screen display driving device can simultaneously drive 2 display screens (SCALAR L and SCAR) through Type-C single-line image transmission and synchronously, expanding or asynchronously display 3 display screens in total The product color value is improved, and the after-sale maintenance is convenient.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

While the present invention has been disclosed above by the description of specific embodiments thereof, it should be understood that all of the embodiments and examples described above are illustrative and not restrictive. Various modifications, improvements or equivalents to the invention may be devised by those skilled in the art within the spirit and scope of the appended claims. Such modifications, improvements and equivalents are also intended to be included within the scope of the present invention.

Claims

1. A multi-screen display driving device characterized in that: the display device comprises a first display screen, a second display screen, a display driving module, a Type-C communication module, a power supply control module and a power supply module; the display driving module and the Type-C communication module are mutually and electrically connected and are arranged on the same PCB, and the first display screen, the second display screen, the power supply control module and the power supply module are all electrically connected with the PCB; the power supply module comprises at least two power supply units, and the power supply control module is used for controlling power supply management and distribution of each power supply unit of the power supply module.

2. The multi-screen display driving apparatus according to claim 1, wherein: the power module is an independent power module, and the power module is an internal power panel or an external adapter.

3. The multi-screen display driving apparatus according to claim 1 or 2, characterized in that: one of the power supply units of the power supply module supplies power to the first display screen, and the other power supply unit of the power supply module supplies power to the second display screen.

4. The multi-screen display driving apparatus according to claim 1 or 2, characterized in that: the display driving module is realized by a chip with the model number of RTD 2556T; the Type-C communication module is realized by adopting a USB-C signal converter with the Type RTS 3368.

5. The multi-screen display driving apparatus according to claim 4, wherein: the display driving module is connected with the Type-C communication module through an HDMI interface.

6. The multi-screen display driving apparatus according to claim 1 or 2, characterized in that: the Type-C communication module comprises a communication module and a signal conversion module which are electrically connected with each other, the communication module is used for communicating with external source equipment and converting received DP image signals into HDMI signals through the signal conversion module to be sent to the display driving module for display.

7. The multi-screen display driving apparatus according to claim 1 or 2, characterized in that: the data interface of the display driving module comprises LVDS, eDP and Vby1 interfaces.

8. The multi-screen display driving apparatus according to claim 1 or 2, characterized in that: the power control module is realized by adopting a chip with a model of CMS8S5880 and a follower circuit thereof.