CN115278182A

CN115278182A - Display device

Info

Publication number: CN115278182A
Application number: CN202110486507.2A
Authority: CN
Inventors: 郑砚杰
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-11-01

Abstract

The embodiment of the application provides display equipment, which comprises a host, a cable and a display screen, wherein the display screen is designed to be separated from the host, the host is connected with the display screen through the cable, the host comprises a first conversion module and a power supply module, the display screen comprises a second conversion module, a backlight module and a display panel, and the cable comprises a first lead and a second lead; the first conversion module is used for converting the multimedia data accessed in the host computer into optical signals from electric signals and transmitting the optical signals to the second conversion module through the first lead, and the second conversion module is used for converting the received optical signals into electric signals and transmitting the electric signals to the display panel for displaying; the power supply module comprises a high-voltage power supply port, the high-voltage power supply port is connected with the backlight module through a second wire, when the host and the display screen are reliably connected and the signal transmission is normal, the power supply module supplies power to the backlight module, and the technical problem that the split display equipment in the prior art is difficult to realize ultrahigh-resolution data transmission is solved.

Description

Display device

Technical Field

The embodiment of the application relates to the technical field of display equipment, in particular to display equipment.

Background

With the advance of technology, ultra-high resolution display screens have been widely used in the field of televisions, for example, 8K resolution televisions are becoming more and more popular among consumers.

Due to the adoption of the split television, the problems that the traditional integrated television is heavy in visual feeling for users, poor in heat dissipation effect, inconvenient to install and the like are solved. The existing split tv is generally designed in such a way that the display part and the signal processing part of the tv are separated and connected together by a metal cable.

Since the higher the resolution is, the larger the power of the television and the amount of data to be transmitted are, and the existing split television is limited by the data transmission mode and cannot realize the data transmission with ultrahigh resolution, how to realize the split television with ultrahigh resolution needs to be solved urgently at present.

Disclosure of Invention

The embodiment of the application provides a display device, which can solve the technical problem that split display devices in the prior art are difficult to realize ultrahigh resolution data transmission.

In some embodiments, an embodiment of the present application provides a display device, including a host, a cable, and a display screen separately designed from the host, where the host is connected to the display screen through the cable, the host includes a first conversion module and a power supply module, the display screen includes a second conversion module, a backlight module, and a display panel, and the cable includes a first wire and a second wire;

the first conversion module is used for converting multimedia data accessed in the host from an electric signal to an optical signal and transmitting the optical signal to the second conversion module through the first wire, and the second conversion module is used for converting the received optical signal to the electric signal and transmitting the converted electric signal to the display panel for displaying;

the power supply module comprises a high-voltage power supply port, the high-voltage power supply port is connected with the backlight module by using the second wire, the power supply module is used for supplying power to the backlight module when reliable connection is established between the host and the display screen and signal transmission is normal, and the voltage provided by the high-voltage power supply port is greater than 220V.

In some embodiments, the power supply module includes a first detection circuit and a second detection circuit;

the first detection circuit is used for detecting whether a voltage value bearable by the second conducting wire is larger than or equal to a voltage provided by the high-voltage power supply port or not, and the second detection circuit is used for detecting whether the connection between the host and the display screen is established through the cable or not;

the power supply module is used for determining that reliable connection between the host and the display screen is established when the voltage value bearable by the second conducting wire is determined to be larger than or equal to the voltage provided by the high-voltage power supply port and the connection between the host and the display screen is established through the cable.

In some embodiments, the display screen further includes a motherboard, the power supply module further includes a third detection circuit, the third detection circuit is connected to the motherboard, and the host is configured to:

when the multimedia data is accessed, starting the mainboard to work;

the third detection circuit is to:

and detecting whether the mainboard is successfully started or not, and determining that the signal transmission between the host and the display screen is normal when the mainboard is successfully started.

In some embodiments, the main board includes an SOC chip, and the SOC chip is connected to the backlight module and the display panel respectively; the SOC chip is used for:

after the host and the display screen are connected through the cable, the display panel is started;

converting the electric signal in the second conversion module into a VB1 signal and outputting the VB1 signal to the display panel;

and opening the backlight module.

In some embodiments, the SOC chip is further configured to:

receiving a backlight adjustment instruction sent by the host, and adjusting the brightness of the backlight module according to the received backlight adjustment instruction;

and feeding back the adjusted brightness of the backlight module to the host.

In some embodiments, the SOC is further configured to:

receiving a standby instruction sent by the host, closing the backlight module and the display panel according to the standby instruction, and feeding back a feedback signal indicating that the display panel is successfully closed to the host after the display panel is closed;

the host is used for entering a standby state after receiving the feedback signal.

In some embodiments, the host further comprises a multimedia data source port for receiving multimedia data transmitted by an external device.

In some embodiments, the multimedia data comprises high definition multimedia interface, HDMI, data.

In some embodiments, a detection circuit and an adjustment circuit are disposed between the host and the display screen;

the detection circuit is used for analyzing data in a display data channel DDC between the host and the display screen and determining the format of a data signal transmitted from the host to the display screen according to the data in the DDC;

the adjusting circuit is used for adjusting the signal quality parameter of the data signal transmitted to the display screen by the host according to the format of the data signal transmitted to the display screen by the host.

In some embodiments, the host comprises a first connection line interface, the display screen comprises a second connection line interface, and the first connection line interface and the second connection line interface are connected through the cable; and the first connecting line interface and the second connecting line interface both support hot plug functions.

The display device that this application embodiment provided, through light signal transmission multimedia data between host computer and the display screen, simultaneously, when confirming that reliable connection has been established and signal transmission is normal between host computer and the display screen, supply power to backlight unit through high-voltage power supply port, can satisfy display device 8K ultrahigh resolution's multimedia data transmission demand and high power demand under the prerequisite of guaranteeing safe and reliable.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments of the present application or the technical solutions in the prior art are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive labor.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment;

fig. 2 is a block diagram schematically showing a configuration of the control apparatus 100 according to an exemplary embodiment;

fig. 3 is a diagram schematically illustrating a hardware configuration of a hardware system in the display apparatus 200 according to the exemplary embodiment;

FIG. 4 is a schematic diagram illustrating an interface on a display device;

fig. 5 is a schematic diagram illustrating a connection relationship between a power supply board and a load;

a block diagram of the hardware architecture of the display device 200 is exemplarily shown in fig. 6;

fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application;

fig. 8 is another schematic structural diagram of a display device according to an embodiment of the present application;

fig. 9 is a schematic circuit structure diagram of a display device according to an embodiment of the present application;

fig. 10 is a schematic diagram illustrating power supply control of a display device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 some embodiments of the present application, but not all 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. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module," as used herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

Some display devices with a split type currently become a new modality, for example: a split TV. The split display device can separate the display screen from the display device main body as an independent structure. That is, the separate type display apparatus includes at least: a host (which may be referred to as a "box" in some specific product implementations), and a display screen connected to the host; the host is used for generating display content, connecting a power supply and the like, supplies power to the display screen and transmits the content to be displayed to the display screen for display. By adopting the split structure, the display screen of the display device can be lighter and thinner, and meanwhile, the heat dissipation, installation and the like of the display device can be facilitated.

With the advance of technology, ultra-high resolution display screens have been widely used in the field of televisions, for example, 8K resolution televisions are becoming more and more popular among consumers. Compared with a split television with the resolution of 4K or lower, the power of the 8K television and the amount of multimedia data to be transmitted are both large, and if the host and the display screen are still connected by adopting a copper wire, the copper wire needs to be thickened greatly, so that the practicability of the split television is greatly reduced.

In order to solve the above technical problem, an embodiment of the present application provides a display device, where multimedia data is transmitted between a host and a display screen through an optical signal, and meanwhile, when it is determined that a reliable connection has been established between the host and the display screen and signal transmission is normal, power is supplied to a backlight module through a high-voltage power supply port, so that on the premise of ensuring safety and reliability, a multimedia data transmission requirement of the display device with an ultra-high resolution of 8K and a high power requirement of the backlight module can be met.

The concept to which the present application relates will be first explained below with reference to the drawings. It should be noted that the following descriptions of the concepts are only for the purpose of facilitating understanding of the contents of the present application, and do not represent limitations on the scope of the present application.

The term "remote control" as used in the embodiments of the present application refers to a component of an electronic device (such as the display device disclosed in the present application) that is capable of wirelessly controlling the electronic device, typically over a short distance. The component may typically be connected to the electronic device using infrared and/or Radio Frequency (RF) signals and/or bluetooth, and may also include functional modules such as WiFi, wireless USB, bluetooth, motion sensors, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hardware in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in the embodiments of the present application refers to a user behavior used to express an intended idea, action, purpose, or result through a change in hand shape or an action such as hand movement.

The term "hardware system" used in the embodiments of the present application may refer to a physical component having computing, controlling, storing, inputting and outputting functions, which is formed by a mechanical, optical, electrical and magnetic device such as an Integrated Circuit (IC), a Printed Circuit Board (PCB) and the like. In various embodiments of the present application, a hardware system may also be generally referred to as a motherboard (or chip).

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display apparatus 200 through the control device 100.

The control device 100 may be a remote controller 100A, which can communicate with the display device 200 through an infrared protocol communication, a bluetooth protocol communication, a ZigBee (ZigBee) protocol communication, or other short-range communication, and is used to control the display device 200 in a wireless or other wired manner. The user may input a user instruction through a key on the remote controller 100A, voice input, control panel input, or the like to control the display apparatus 200.

The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like, which may communicate with the display device 200 through a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), or other networks, and implement control of the display device 200 through an application program corresponding to the display device 200. For example, the display device 200 is controlled using an application program running on the smart device. The application may provide various controls to the User through an intuitive User Interface (UI) on a screen associated with the smart device.

As shown in fig. 1, the display apparatus 200 may also perform data communication with the server 300 through various communication means. In various embodiments of the present application, the display device 200 may be allowed to be in a wired or wireless communication connection with the server 300 via a local area network, a wireless local area network, or other network. The server 300 may provide various contents and interactions to the display apparatus 200.

The display device 200 includes a display 201 and a host 202, wherein the display 201 is connected to the host 202 through a connection line 203. In some embodiments, the host 202 may be connected to a power source and transmit a power signal to the display screen 201 via the connection 203 to supply power to the display screen 201. Meanwhile, the host 202 may further obtain the content to be displayed from the server 300, and transmit the content to be displayed to the display 201 through the connection line 203 in an electrical signal manner, so that the display 201 displays the received content to be displayed.

The display device 200, in one aspect, may be a liquid crystal display, an OLED (Organic Light Emitting Diode) display, a projection display device; on the other hand, the display device can be a display system consisting of an intelligent television or a display and a set-top box. The specific display device type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

Fig. 2 is a block diagram schematically showing the configuration of the control apparatus 100 according to the exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communicator 130, a user input/output interface 140, a memory 190, and a power supply 180.

The control apparatus 100 is configured to control the display device 200, and to receive an input operation instruction from a user, and convert the operation instruction into an instruction recognizable and responsive by the display device 200, and to mediate interaction between the user and the display device 200. Such as: the user operates the channel up/down keys of the control device 100, and the display device 200 responds to the channel up/down operation.

In some embodiments, the control device 100 may be a smart device. Such as: the control apparatus 100 may install various applications that control the display device 200 according to user demands.

The controller 110 includes a processor 112, a RAM 113 and a ROM 114, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components for communication and coordination and external and internal data processing functions.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the display apparatus 200. The communicator 130 may include at least one of a WIFI module 131, a bluetooth module 132, an NFC module 133, and the like.

A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, a camera 145, and the like. Such as: the user can realize a user instruction input function through actions such as voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding instruction signal, and sends the instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display apparatus 200. In some embodiments, the interface may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. And the following steps: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

And a memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 190 may store various control signal commands input by a user.

And a power supply 180 for providing operation power support for each electrical component of the control device 100 under the control of the controller 110. The power supply 180 may be powered by a battery and associated control circuitry.

Fig. 3 is a schematic diagram illustrating a hardware configuration of a hardware system in the display device 200 according to an exemplary embodiment. For convenience of explanation, the display device 200 in fig. 3 is illustrated by taking a liquid crystal display as an example.

As shown in fig. 3, the display device 200 includes: panel 1, backlight assembly 2, mainboard 3, power board 4, backshell 5 and base 6. Wherein, the panel 1 is used for presenting pictures for users; the backlight assembly 2 is located below the panel 1, usually some optical assemblies are used for supplying sufficient brightness and light sources with uniform distribution, so that the panel 1 can normally display images, the backlight assembly 2 further comprises a back plate 20, the main plate 3 and the power supply plate 4 are arranged on the back plate 20, usually some convex hull structures are formed on the back plate 20 by pressing, and the main plate 3 and the power supply plate 4 are fixed on the convex hulls through screws or hooks; the rear shell 5 is covered on the panel 1 to hide the parts of the display equipment such as the backlight assembly 2, the main board 3, the power panel 4 and the like, thereby achieving the effect of attractive appearance; and a base 6 for supporting the display device.

In some embodiments, the display device 200 may not include the rear case 5.

In some embodiments, the display screen is connected to a host (tv box) of the display device 200 via a HI-LINK data line, and the host is further connected to a power adapter via an AC data line. Therefore, fig. 4 schematically shows a schematic diagram of an interface on a display device, and a HI-LINK interface for connecting a HI-LINK data line and a TYPE-C interface may be provided on the display device.

In some embodiments, the display screen of the display device may also include a main board and a power board, where the main board is configured to generate the content to be displayed and send the content to the main board of the display screen through the HI-LINK data line, so that the display device displays the content to be displayed. The power panel in the host can be used for transmitting electric energy to the mainboard of the display screen so as to supply power to the display screen, and at the moment, the display screen does not comprise the power panel and only receives the electric energy provided by the power panel of the host.

In addition, the display apparatus 200 further includes a sound reproducing device (not shown in the figure), such as an audio component, e.g., an I2S interface including a power Amplifier (AMP) and a Speaker (Speaker), etc., for realizing reproduction of sound. Usually, the sound components are capable of realizing sound output of at least two sound channels; when the panoramic surround effect is to be achieved, a plurality of acoustic components are required to be arranged to output sounds of a plurality of sound channels, and a detailed description thereof is omitted.

It should be noted that the display device of the display device 200 may also be an OLED display screen, so that the template included in the display device 200 is changed accordingly, which is not described herein too much.

Fig. 5 is a schematic diagram illustrating an exemplary connection relationship between a power board and a load, and fig. 5 illustrates a possible connection relationship between the power board and the load IN a display device, IN which the power board 4 of a host includes an input terminal IN and an output terminal OUT (a first output terminal OUT1, a second output terminal OUT2, a third output terminal OUT3, and a fourth output terminal OUT4 are illustrated), where the input terminal IN is connected to a commercial power, the output terminal OUT is connected to a load, for example, the first output terminal OUT1 is connected to a sound component, the second output terminal OUT2 is connected to a main board, and the third output terminal OUT3 is connected to a first display driving board 33. In addition, the fourth output end OUT4 is connected with the display screen, and the host of the display device transmits the power supply to the display screen through the HI-LINK connection line, for example, the power supply can be transmitted to a main board of the display screen to supply power to the display screen. The power board 4 needs to convert the ac power into dc power required by the load and the display, and the dc power is usually of different specifications, for example, 18V is required for the audio components, 12V/18V is required for the main board 31, and so on.

The system architecture of the display device of the present application is further described below with reference to fig. 6. It should be noted that fig. 6 is only an exemplary illustration and does not represent a limitation of the present application. In actual implementation, more or less hardware or interfaces may be included as desired.

A block diagram of the hardware architecture of the display device 200 is illustrated in fig. 6. As shown in fig. 6, the hardware system of the display device 200 includes a controller, and modules connected to the controller through various interfaces.

In some embodiments, the controller may be provided on the main board 3 shown in fig. 3.

In some embodiments, at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the input/output interface 255, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, the external device interface 240, and the display screen 201 are included in the display apparatus 200.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: the interface can be any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port, and the like. The plurality of interfaces may form a composite input/output interface.

In some embodiments, the tuner demodulator 210 is configured to receive broadcast television signals through wired or wireless reception, perform modem processing such as amplification, mixing, and resonance, and demodulate audio and video signals from multiple wireless or wired broadcast television signals, where the audio and video signals may include television audio and video signals carried in a television channel frequency selected by a user and EPG data signals.

In some embodiments, the frequency points demodulated by the tuner demodulator 210 are controlled by the controller 250, and the controller 250 can send out control signals according to user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to the broadcasting system of the television signal. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to a modulation type. Or the signals are classified into digital signals, analog signals and the like according to the types of the signals.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box. Therefore, the set top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

Controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a Graphics Processing Unit (GPU)), a Central Processing Unit (CPU) 254 (CPU), a Communication Interface (Communication Interface), and a Communication Bus 256 (Bus).

In some embodiments, when the power-on signal is received, the display device 200 starts to power up, the CPU executes the system boot instruction in the ROM 252, and copies the temporary data of the operating system stored in the memory to the RAM 251 so as to start or run the operating system. After the start of the operating system is completed, the CPU copies the temporary data of the various application programs in the memory to the RAM 251, and then, the various application programs are started or run.

In some embodiments, CPU processor 254 is used to execute operating system and application program instructions stored in memory. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

In some example embodiments, the CPU processor 254 may comprise a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the graphics processor 253 is used to generate various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And the system comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, the video processor 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, and the like according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on the direct display device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.

In some embodiments, the audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processes to obtain an audio signal that can be played in a speaker.

The power supply 290 supplies power to the display device 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

A user interface 265 for receiving an input signal of a user and then transmitting the received user input signal to the controller 250. The user input signal may be a remote controller signal received through an infrared receiver, and various user control signals may be received through the network communication module.

In some embodiments, the user inputs a user command through the control apparatus 100 or the mobile terminal 300, the user input interface responds to the user input through the controller 250 according to the user input, and the display device 200 responds to the user input through the controller 250.

The memory 260 includes a memory for storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

It will be appreciated by those skilled in the art that the arrangements shown in the figures above are not limiting of display devices and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used. The display device provided by the present application may be the display device as described in fig. 1 to 6, or may also be other forms of display devices, without limitation.

The application provides a display device, can be applied to split type display device to specifically provide connected mode, signal transmission mode and control mode between host computer and the display screen among the display device, be used for solving among the prior art split type display device and be difficult to realize the technical problem of super high resolution ratio data transmission.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present disclosure, and in some embodiments, the display device includes a host 10, a display screen 20, and a cable, where the display screen 20 is disposed outside the host 10 and is separated from the host 10, that is, the host 10 and the display screen 20 have independent housings respectively. The host 10 and the display screen 20 are connected by a cable, and the cable includes a first conducting wire and a second conducting wire.

In some embodiments, the first conductive wire may be an optical fiber, and the second conductive wire may be a metal conductive wire, such as a copper wire, etc., which is not limited in this application.

In some embodiments, in order to reduce the number of connection lines, the host 10 and the display 20 may be connected via an external cable, which includes transmission lines and interfaces for transmitting different signals. That is, the display device provides the user with an intuitive feeling that the host computer 10 and the display screen 20 are connected by only one cable, and the cable can be understood as a set including a plurality of transmission lines for transmitting different signals, for example, a transmission line for transmitting an electric signal, an optical signal, a control signal, and the like.

The host 10 at least includes a first conversion module 11 and a power supply module 12, and the display screen 20 includes a second conversion module 21, a backlight module 22 and a display panel 23. The first conversion module 12 and the second conversion module 21 are connected by optical fibers in cables.

In some embodiments, the host 10 may receive a multimedia data signal input by an external device (e.g., a computer, a DVD, a set-top box, etc.), and transmit the accessed multimedia data signal to the first conversion module 11; the first conversion module 11 is configured to convert multimedia data accessed in the host 10 from an electrical signal to an optical signal, and transmit the optical signal to the second conversion module 21 through the optical fiber; the second conversion module 21 is configured to convert the received optical signal into an electrical signal, and send the converted electrical signal to the display panel 23 for displaying.

The power supply module 12 includes a high voltage power supply port capable of providing a voltage higher than 220V to the backlight module 22.

In some embodiments, the high voltage power supply port can provide 350V to meet the power consumption requirement of the backlight module 700W.

In addition, the power supply module 12 further includes a low voltage power supply port (for example, providing 12V voltage), and the low voltage power supply port may be used to supply power to other components except the backlight module 22, including but not limited to supplying power to an HDM repeater (repeater), a USB driver chip, the first conversion module 11, the second conversion module 21, a screen SOC, a power amplifier, and the like.

In some embodiments, since the power supply module 12 uses the high voltage power supply port to supply power to the backlight module 22, the power supply module 12 supplies power to the backlight module 22 only when a reliable connection is established between the host 10 and the display screen 20 and signal transmission is normal, so as to improve the safety of the display device.

According to the display device provided by the embodiment of the application, multimedia data are transmitted between the host 10 and the display screen 20 through the optical fiber, meanwhile, when the reliable connection is established between the host 10 and the display screen 20 and the signal transmission is normal, power is supplied to the backlight module through the high-voltage power supply port, and the transmission requirement of the multimedia data with the ultrahigh resolution of the display device 8K and the high-power requirement of the backlight module can be met on the premise of ensuring safety and reliability.

Based on the content described in the foregoing embodiment, referring to fig. 8, fig. 8 is another schematic structural diagram of a display device provided in an embodiment of the present application. As shown in fig. 8, the present embodiment provides a display device including, on a main board 13 on a host computer 10 side: an SOC111 and a first connection line interface 112; the display screen 20 includes: a main board 24, a backlight module 22 and a display panel 23; the main board 24 includes thereon: a second connection line interface 211, an SOC212 (also may be referred to as a screen SOC), a backlight control circuit 213, a power supply control circuit 214, and a display control circuit 215.

Wherein the first connection line interface 112 and the second connection line interface 211 each comprise a plurality of communication interfaces, each of which is operable to connect with a corresponding one of the transmission lines in the cable 30. For example, when the cable 30 is an HI-LINK connection line, the HI-LINK connection line includes 36 transmission lines, the first connection line interface 112 has 36 communication interfaces corresponding to the 36 transmission lines one by one, the second connection line interface 211 also has 36 communication interfaces corresponding to the 36 transmission lines one by one, and when one end of the connection line is connected to the connection line interface, the communication interfaces in the connection line interface are connected to the corresponding transmission lines in the connection line.

The display device provided in the embodiment of the present application can implement at least one of the following functions:

1. the host 10 supplies power to the display screen 20 through the cable 30.

After the power supply module 12 in the host 10 receives the power input of the commercial power ac with the specification of 100-240V and 50-60Hz, the power supply module 12 may convert the ac power into the dc power of each load in the display 20, and transmit the dc power to the display 20 through the first connection interface 112 on the motherboard 13 and the transmission line in the cable 30 for transmitting the dc power.

In some embodiments, a direct current with a higher voltage, for example, 350V, required by the backlight module 22 in the display screen 20 is regarded as a first electrical signal, and a direct current with a lower voltage, for example, 3V, 3.3V, or 5V, required by the SOC212, the display panel 23, and the like in the display screen 20 is regarded as a second electrical signal. The power supply module 12 converts the alternating current into a first electrical signal and a second electrical signal after receiving the alternating current of the utility power, and transmits the first electrical signal to the display screen 20 through the first communication interface in the first connection interface 112 on the motherboard 13, and transmits the second electrical signal to the display screen 20 through the second communication interface in the first connection interface 112 on the motherboard 13.

After receiving the first electrical signal through the first communication interface of the second connection line interface 211, the backlight control circuit 213 on the motherboard of the display screen 20 uses the first electrical signal to supply power to the backlight module 22; after receiving the second electrical signal through the second communication interface of the second connection line interface 211, the power supply control circuit 213 in the display screen 20 uses the second electrical signal to supply power to the SOC212 and the display panel 23.

Referring to fig. 9, fig. 9 is a schematic circuit structure diagram of a display device according to an embodiment of the present disclosure. Wherein the circuit diagram is simplified for ease of viewing, the two arrow connections are represented by the same items identified on the arrows of the different elements.

As shown in fig. 9, the backlight control circuit 213 receives the first electrical signal and supplies power to the backlight module; the FB is used for the backlight control circuit (also called as a light bar control circuit) to feed back the working states of the backlight module, such as voltage, current and the like, to the host machine, so that the power supply module of the host machine adjusts the voltage of the first electric signal, the backlight module can be ensured to work according to the rated current, and the loss is reduced.

For example, the host may send a backlight adjustment instruction to the screen SOC through the UART or IIC channel, and after receiving the backlight adjustment instruction, the screen SOC adjusts the backlight brightness and feeds back the adjusted backlight brightness to the host through the FB signal, thereby ensuring stable constant current output of the backlight module.

The power supply control circuit 214 may convert the second electrical signal into a different voltage after receiving the second electrical signal with a voltage of 12V, for example, supplying power to a display panel (also referred to as a panel or TCON) through a VCC power supply interface of 12V, supplying power to an SOC through +5V, and the like.

In some embodiments, the power supply control circuit, when implemented, may include a plurality of DCDC circuits, each for converting the received 12V voltage to a voltage.

In some embodiments, in order to ensure the safety when the host 10 transmits power to the display screen 20 through the external cable 30, when the display device is powered on, the host 10 may first transmit a second electrical signal with a lower voltage to the display screen through the first connecting line interface 112, the cable 30 and the second connecting line interface 211 in sequence, and then the host 10 transmits a first electrical signal with a higher voltage to the display screen through the first connecting line interface 112, the cable 30 and the second connecting line interface 211 in sequence.

Accordingly, when the display device is turned off, the host computer 10 may first stop transmitting the first electrical signal with higher voltage to the display screen 20, and then stop transmitting the second electrical signal with lower voltage to the display screen 20.

2. The host computer 10 sends the picture to be displayed to the display screen 20 through the cable 30 for displaying.

The display screen 20 provided in this embodiment may be a display mode combining the backlight module 22 and the display panel 23. The Display panel 23 of the Display screen 20 may be, for example, a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), a laser projection hard screen, an image Display film, or a touch control film, and the Display screen 20 may Display a picture corresponding to the optical signal on the Display panel 23 and implement a Display function together with the backlight lighting of the Display screen. Therefore, the host 10 needs to provide an electrical signal for displaying a picture to the display panel 23 in addition to supplying power to the backlight module 22 and the display panel 23 of the display screen, so as to finally realize the display function of the display screen.

In some embodiments, in the present embodiment, the host 10, after receiving the HDMI signal, converts the HDMI signal into an optical signal, and then transmits the optical signal to the display 20 through the optical fiber for transmitting the optical signal in the cable 30.

The display screen 20, after receiving the optical signal transmitted from the host 10, converts the optical signal into an HDMI signal, and then converts the HDMI signal into a VB1 signal by the SOC212, and transmits the VB1 signal to the display panel 23, and the display is performed by the display panel 23.

In some embodiments, since the host 10 supplies power to the backlight module 22 and the display panel 24 of the display 20 through two electrical signals, in order to unify timing of the two, after the SOC212 determines that the display 20 is connected to the host 10 through the connection line 30, the host 10 starts to supply power to the display 20 through the cable 30, and determines that the HDMI signal is stable, the STB signal may be first sent to the display control circuit 215 in the display 20 to indicate that the display panel can be powered.

In some embodiments, after the host 10 accesses the HDMI signal, the +5V (host power output control signal) will turn on VCC power, and VCC drives the optical fiber and the display 20 motherboard to operate. After the motherboard of the display 2 is working, the HDMI _ HPD is pulled up, the host 10 is notified to read DDC data, and the HDMI signal starts to be transmitted. After the host 10 successfully reads the DDC data, it can be considered that the signal transmission between the host 10 and the display screen 20 is successfully established.

The display control circuit 215 is turned on after receiving the STB signal, so that the 12V power transmitted from the host computer 10 can supply power to the display panel 23 through the display control circuit 215. Subsequently, the SOC212 receives the HDMI signal again, converts the HDMI signal into a VB1 signal, and transmits the signal to the display panel 23 for display. Finally, after a certain delay, the SOC212 controls the backlight control circuit 213 to supply power to the backlight module 22.

In some embodiments, to ensure the best output quality of signals in various HDMI formats, a detection circuit and an adjustment circuit may be disposed in the display device.

In some embodiments, before outputting signals with different formats, the HDMI source terminal initiates a DDC command to read the device EDID signal at the HDMI sink terminal. The HDMI source end sends the highest format signal which can be supported by the display screen according to the receiving capacity of the equipment end. The communication content of the DDC channel is analyzed by the detection circuit, the format of the signal to be transmitted at present is identified, the adjusting circuit is adaptive to the preset optimal EQ parameter of the corresponding format, the signal transmitted by the host is adjusted, and the best quality of the signal received by the display screen is ensured.

3. The control signals between the host 10 and the display screen 20 interact.

The control signal between the host 10 and the display screen 20 may be implemented by an IIC (also referred to as I2C) channel, wherein the SOC111 in the host 10 may be connected to the SOC212 in the display screen 20 through a transmission line in the cable 30 for transmitting the I2C signal, and send a control signal to the SOC212, which may be used for performing related control on the SOC 212.

In some embodiments, the backlight control circuit 213 may also receive a backlight control signal sent by the host 10 through the I2C communication interface, and adjust the brightness of the backlight module according to the backlight control signal.

4. The interaction of the on and off states between the host 10 and the display screen 20.

The connection line 30 between the host 10 and the display screen 20 further includes a UART connection, and the SOC111 of the host 10 may be connected to the SOC212 in the display screen 20 through a transmission line in the cable 30 for transmitting a UART signal, and transmit a UART signal such as an on/off signal including: power on, power off, and standby signals. For example, in the standby process, after the SOC111 of the host 10 is turned off and it is determined that the user presses the standby key is received, a standby signal is sent to the SOC212 of the display screen 20 through the URAT communication interface to instruct the display screen 20 to enter a standby flow and turn off the power supply of the display screen to enter a standby state, and after the standby is completed, the SOC of the host 10 may be notified through the URAT communication interface that the SOC has currently entered the standby state.

In some embodiments, when the host 10 receives the standby instruction, the SOC111 notifies the screen SOC to enter the standby process through the UART to turn off the screen power supply, the screen SOC feeds back the SOC111 through the UART interface after the screen SOC is completed, and the screen SOC power supply is turned off after the SOC111 receives the feedback signal.

5. After the host 10 is connected to the display screen 20, the security check of slow power-up is performed.

Wherein, still be provided with resistance R2 on the mainboard 21 of display screen 20, wherein, resistance R2's second end ground connection can be used to detect whether the second connecting wire interface that is located display screen 20 one side is connected with the first connecting wire interface of host computer 10 one side through the connecting wire, can be used to detect whether display screen 20 is connected with host computer 10.

In some embodiments, in the display device provided in the embodiment of the present application, the host 10 may supply power to the backlight module of the display screen 20 through the cable 30, and the 350V voltage transmitted on the cable 30 for supplying power is higher, so as to prevent a user from bringing a safety hazard to the display device itself and the user if the host 10 transmits the 350V high voltage to the display screen 20 directly through the cable 30 under the condition that a connection line between the host 10 and the display screen 20 is not connected due to lack of experience in use or improper operation. Therefore, a resistor R2 for detection is provided on the main board 21 on the side of the display screen 20, when the display screen 20 is not connected to the host 10 through the connection line 30, the resistor R2 will pull up the communication interface HILINK HPD connected to the first end to a high level, when the display screen 20 is connected to the host 10 through the cable 3, that is, the first connection interface and the second connection interface are connected through the cable 30, the resistor 218 pulls down the communication interface HILINK HPD to a low level, and at the same time, the power supply control circuit transmits the converted 5V voltage to the SOC, and when the SOC receives the 5V voltage, the high level signal is sent to the SOC111 on the side of the host 10 through the HDMI HPD communication interface (not shown in fig. 9) of the second connection interface. For the SOC of the host 10, only after receiving the low-level HILINK HPD and the high-level HDMI HPD at the same time, it can be determined that the host 10 and the display screen 20 are connected through the connection line 30, and then the 350V voltage is transmitted to the display screen 20 through the connection line 30, so that the host 10 can transmit the 350V high voltage to the display screen 20 through the connection line 30 under the condition that the connection line 30 between the host 10 and the display screen 20 is connected, and the potential safety hazard brought by the display device itself and a user is reduced.

In some embodiments, referring to fig. 10, fig. 10 is a power supply control schematic diagram of a display device provided in an embodiment of the present application.

In some embodiments, 3 detection switches may be designed in the host 10 to control the high voltage power output, which are respectively detection switches K1, K2, and K3, and 2 detection switches may be designed in the display screen to control the high voltage power output, which are respectively switches K4 and K5.

The detection switches K1 and K4 are used for detecting whether the connection wire between the host 10 and the display screen 20 supports 350V high-voltage transmission, if so, the detection switches K1 and K4 are closed, otherwise, the detection switches K1 and K4 are opened.

The detection switch K2 is used to detect whether the signal connection between the host 10 and the display screen 20 is normal, and when the signal connection is normal, the detection switch K2 is closed, otherwise, the detection switch K2 is opened.

The detection switch K3 is used for detecting whether a connection relation exists between the host 10 and the display screen 20, the detection switch K3 is closed during connection, and otherwise, the detection switch K3 is opened.

The detection switch K5 is closed after the display signal outputted from the host 10 to the display screen 20 is normal.

It can be understood that, when the connection wire between the host 10 and the display screen 20 supports 350V high voltage transmission, the signal connection between the host 10 and the display screen 2 is normal, and there is a connection relationship between the host 10 and the display screen 20, and when the display signal output from the host 10 to the display screen 20 is normal, the detection switches K1, K2, K3, K4, and K5 are all in a closed state, and at this time, 350V input voltage in the host 10 can supply power to the backlight module in the display screen 20.

In order to realize the functions, the first connecting line interface and the second connecting line interface are designed. The first connecting line interface and the second connecting line interface both support the hot plugging function, and automatic connection after the cable is inserted can be guaranteed.

In some embodiments, in order to implement the above functions, the display device needs to provide a communication interface in the first connection line interface 112 on the host 10 side and a corresponding communication interface in the second connection line interface 211 on the display screen 20 side, so that the transmission lines of the connection lines for transmitting corresponding signals are respectively connected with the corresponding communication interfaces on both sides to implement the related functions. For example, for the HDMI interface provided in the second connection line interface 211, the HDMI interface is also provided in the first connection line interface 112, and after the two ends of the transmission line for transmitting the HDMI signal in the connection line are connected to the two HDMI interfaces, the transmission of the HDMI signal between the first connection line interface 112 and the second connection line interface 211 can be realized, and thus, the transmission of the HDMI signal between the host computer 10 and the display screen 20 is also realized.

In some embodiments, a design of a connection line interface capable of implementing the above functions is further provided in the embodiments of the present application, where the connection line interface may be a first connection line interface or a second connection line interface, the connection line interface at least includes 36 communication interfaces with serial numbers of 1 to 36, and the serial number and the corresponding function of each communication interface are shown in table 1.

TABLE 1

The communication interface 1 is used for connecting an optical fiber power supply line, and can be used for transmitting a 5V/3.3V power supply and being compatible with a standby power supply when a host supplies power to an optical fiber.

The communication interfaces 2-12 are used to transmit HDMI signals and may be HDMI communication interfaces as shown in fig. 9.

The communication interfaces 13-15 are used for transmitting USB signals.

The communication interface 16, 30-32 is for transmitting a first electrical signal; the first electric signal is used for supplying power to a backlight module of the display device.

The communication interface 17 is configured to receive a detection signal indicating whether the first connection line interface is connected to the display screen, and may be used as the HILINK HPD communication interface shown in fig. 9.

The communication interfaces 18-19 are used to transmit IIC signals and may serve as IIC communication interfaces.

The communication interfaces 20-21 are used for transmitting URAT signals and may be UART communication interfaces.

The communication interface 22 is used for providing a detection signal for detecting whether the second connecting line interface is connected with the host computer.

The communication interfaces 23, 33-36 are for grounding;

the communication interfaces 24-28 are used for transmitting second electrical signals; the second electric signal is used for supplying power to the SOC and the display panel of the display device.

The communication interface 29 is used for transmitting feedback signals sent by the backlight control circuit to the host, and can be used as a "FB" communication interface as shown in fig. 9.

It is understood that the arrangement and combination of the communication interfaces shown in table 1 is only one possible implementation manner, and the connection line interfaces having all the communication interfaces shown in table 1 can implement all the functions in the above embodiments; alternatively, for the connecting line interface that only needs to realize a part of functions, only a part of the communication interfaces in table 1 may be provided.

Finally, through the above design, even if only one connecting line is connected between two devices having the connecting line interfaces shown in table 1, the transmission of signals in various forms including electrical signals, HDMI signals, USB signals, I2C signals, UART signals, etc. can be realized by the transmission lines transmitting different signals in the connecting line and combining the corresponding communication interfaces on the two connecting line interfaces, thereby simplifying the complexity of the connecting line between the connecting line interfaces.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device is characterized by comprising a host, a cable and a display screen which is designed to be separated from the host, wherein the host is connected with the display screen through the cable;

2. The display device according to claim 1, wherein the power supply module comprises a first detection circuit and a second detection circuit;

3. The display device according to claim 2, wherein the display screen further comprises a main board, the power supply module further comprises a third detection circuit, the third detection circuit is connected to the main board, and the host is configured to:

when the multimedia data is accessed, starting the mainboard to work;

the third detection circuit is to:

4. The display device according to claim 3, wherein the main board comprises an SOC chip, and the SOC chip is respectively connected with the backlight module and the display panel; the SOC chip is used for:

and opening the backlight module.

5. The display device of claim 4, wherein the SOC chip is further configured to:

and feeding back the adjusted brightness of the backlight module to the host.

6. The display device of claim 5, wherein the SOC is further to:

7. The display device as recited in any one of claims 1 to 6, wherein the host further comprises a multimedia data source port configured to receive multimedia data transmitted from an external device.

8. The display device of claim 7, wherein the multimedia data comprises High Definition Multimedia Interface (HDMI) data.

9. The display device according to claim 7, wherein a detection circuit and an adjustment circuit are disposed between the host and the display screen;

10. The display device according to claim 1, wherein the host comprises a first connection line interface, the display screen comprises a second connection line interface, and the first connection line interface and the second connection line interface are connected through the cable; the first connecting line interface and the second connecting line interface both support hot plug functions.