CN113163140B

CN113163140B - Display device

Info

Publication number: CN113163140B
Application number: CN202010315400.7A
Authority: CN
Inventors: 庞震华; 张洪浩
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-01-22
Filing date: 2020-04-21
Publication date: 2023-05-09
Anticipated expiration: 2040-04-21
Also published as: CN113163238A; CN113157612A; CN113163242B; CN113163538A; CN113157358A; CN113157612B; CN113163241A; CN113163143A; CN113163242A; CN113163143B; CN113163142A; CN113163237B; CN113163237A; CN113163239A; CN113163243A; CN113163142B; CN113163241B; CN113163239B; CN113157358B; CN113163140A

Abstract

The application provides a display device, external connecting wire through between split type setting's host computer and display screen, and realize the host computer and carry out the connection problem that supplies power to display screen through the connecting wire, and the three connecting wire in the at most intercommunication connecting wire of display host computer realizes supplying power to display screen, the display device that this application provided, the host computer that has solved split type display device among the prior art is to the technical problem of display screen power supply, make the host computer just can realize through the connecting wire that the host computer supplies power to display screen, and do not need connecting power respectively between host computer and the display screen, thereby the host computer is comparatively simple to the relevant structure of display screen power supply in the messenger split type display device.

Description

Display device

The present application claims priority from chinese patent office, application number 2020100747123, chinese patent application entitled "display device", filed 22 months 01 in 2020, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a display device.

Background

At present, with the development of electronic technology, the integration level of electronic devices including display devices such as televisions is higher and higher, and thus, higher and higher requirements are being placed on power supply circuits in the display devices. At present, most display devices receive commercial power alternating current through a plug, and power supply circuits specially arranged on a power panel are used for converting the alternating current into direct current, transforming the alternating current and the like to supply power for loads such as a main board, a display screen and the like in the display device.

In the prior art, some manufacturers put forward the concept of a split display device, taking a split television as an example, the split television separates a display screen from a main body of the television, and as an independent structure setting, the split structure can make the display screen lighter and thinner without being limited by the display device, and the split structure requires a host of the display device to transmit display signals to the display screen through an external connection line, and also transmits electric energy provided by a power panel to the display screen to supply power. However, in the prior art, no way is disclosed how the host transmits electric energy to the display screen through an external connection line so as to supply power to the display screen.

Therefore, how to supply power to the display device through the external connection line by the host of the split display device is a technical problem to be solved in the field.

Disclosure of Invention

The application provides a display screen to solve the technical problem that how to make split type display device's host computer pass through external connection line to display device power supply, make the host computer just can realize that the host computer supplies power to the display screen through the connecting wire, and need not connect the power respectively between host computer and the display screen, thereby make the host computer in the split type display device to the relative structure of display screen power supply comparatively simple.

The present application provides a display device, including: the display screen comprises a host, a display screen which is designed separately from the host and a connecting wire; the host is connected with the display screen through the connecting wire, and is used for determining a picture to be displayed and sending a signal of the picture to be displayed to the display screen, and the host is also used for supplying power to the display screen; wherein the host comprises: a power panel and a main board; the power panel is connected with the main board, and the main board is connected with the display screen through a connecting wire; the power panel is used for supplying power to the main board, and is also used for converting commercial power alternating current into direct current of the working voltage of the display screen, and supplying power to the display screen through the main board and the connecting line.

In an embodiment of the present application, the connection line includes: positive power supply line, negative power supply line and feedback line; the positive power supply line and the negative power supply line are used for transmitting electric energy to the display screen, the feedback line is used for receiving a feedback signal of the display screen, and the feedback signal is used for adjusting the voltage of the electric energy transmitted to the display screen by the power panel.

In an embodiment of the present application, the positive power supply line, the negative power supply line and the feedback line are disposed in one Hi-link connection line.

In an embodiment of the present application, the power panel includes: the power supply plug, the rectifier bridge, the power factor correction PFC module, the first resonant converter LLC module and the second LLC module; the power plug, the rectifier bridge and the PFC module are connected in sequence, and the PFC module is respectively connected with the first LLC module and the second LLC module; the first LLC module is further connected with the main board, and is used for generating a first voltage and supplying power to the main board through the first voltage; the second LLC module is further connected with the backlight drive in the display screen through the main board and the connecting line, and is used for generating a second voltage and supplying power for the display screen through the second voltage.

In an embodiment of the present application, the display screen includes a backlight driver and a backlight module; the backlight driver is connected with the main board through the connecting wire, and is also connected with the backlight module; the backlight drive is used for receiving the electric energy transmitted by the main board through the positive power supply line and the negative power supply line, and driving the backlight module to work through the received electric energy. The backlight driver is further configured to send the working state of the backlight module to the power panel through the feedback line and the motherboard.

In an embodiment of the present application, the display screen further includes: the MCU is connected with the backlight driver and the mainboard; the MCU is used for receiving a control command sent by the main board and initializing the backlight drive according to the control command.

In an embodiment of the present application, the motherboard includes: a system-on-chip (SoC) connected with the MCU in the display screen; the SoC is configured to generate a control command, and send the control command to the MCU, where the control command is configured to instruct the MCU to initialize the backlight driving.

In an embodiment of the present application, the MCU is further configured to acquire and store a working state of the backlight driver; the SoC is also used for reading the working state of the backlight drive stored by the MCU.

In an embodiment of the present application, the SoC is specifically connected to the MCU through an I2C connection line, an SPI connection line, or a serial connection line.

In an embodiment of the present application, the I2C connection line, the SPI connection line, or the serial connection line is disposed in the Hi-link connection line.

In summary, the application provides a display device, through external connecting wire between split type host computer that sets up and display screen to realize the host computer and carry out the connection problem that supplies power to display screen through the connecting wire, and the three connecting wire in the at most intercommunication connecting wire of display host computer realizes supplying power to display screen. Therefore, the display device provided by the application solves the technical problem that the host of the split display device supplies power to the display screen in the prior art, so that the host can supply power to the display screen through the connecting wire without connecting power sources between the host and the display screen, and the host in the split display device is simpler in structure related to power supply to the display screen.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

A schematic diagram of an operation scenario between a display device and a control device according to an embodiment is exemplarily shown in fig. 1;

a block diagram of a configuration of the control apparatus 100 in accordance with an exemplary embodiment is exemplarily shown in fig. 2;

a schematic diagram of a hardware architecture of a hardware system in the display device 200 according to an exemplary embodiment is illustrated in fig. 3;

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

fig. 5 shows a schematic diagram of a connection relationship between a power panel and a load;

a hardware architecture block diagram of the display device 200 according to fig. 2, 3 or 4 is exemplarily shown in fig. 6;

a functional configuration diagram of a display device according to an exemplary embodiment is exemplarily shown in fig. 7;

FIG. 8 is a schematic diagram of a power supply circuit of a display device;

FIG. 9 is a schematic structural diagram of an embodiment of a display device provided in the present application;

fig. 10 is a schematic structural diagram of a host of the display device provided in the present application;

fig. 11 is a schematic structural diagram of a display screen of the display device provided in the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The present application is mainly directed to a display device having a rotatable display screen, and the structure, function, implementation, and the like of the display device will be described in detail first.

Some display devices having a split type are now a new form, for example: a split television. The split display device can separate the display screen from the display device main body, and is provided as a separate structure, that is, the split display device includes at least: a host (which may be referred to as a "box" in some specific product implementations), and a display screen coupled to the host; the host is used for generating display contents, connecting a power supply and the like, supplying power to the display screen, transmitting the contents to be displayed to the display screen for display, and the display device is used for displaying the contents to be displayed, which are transmitted by the host. By adopting the split structure, the display screen of the display device can be lighter and thinner.

More particularly, the application discloses a rotatable split display device capable of achieving rotation of a display screen of the display device and reducing complexity of a connecting line between a display device host and the display screen. The display screen can rotate in the installation plane, for example, the display screen is parallel to the wall surface and is installed on the wall body, the installation screen of the display screen is parallel to the wall surface, and the display screen can rotate 360 degrees in the installation plane parallel to the wall surface.

The concepts related to the present application will be described with reference to the accompanying drawings. It should be noted that the following descriptions of the concepts are only for making the content of the present application easier to understand, and do not represent a limitation on the protection scope of the present application.

The term "module" as used in various embodiments of the present application may refer to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in the various embodiments of the present application refers to a component of an electronic device (such as a display device as disclosed herein) that can typically wirelessly control the electronic device over a relatively short range of distances. The assembly may be connected to the electronic device generally 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 a general remote control device with a touch screen user interface.

The term "gesture" as used in embodiments of the present application refers to a user behavior that is used to express an intended idea, action, purpose, and/or result by a change in hand or motion of a hand, etc.

The term "hardware system" as used in the various embodiments of the present application may refer to a physical component comprising mechanical, optical, electrical, magnetic devices such as integrated circuits (Integrated Circuit, ICs), printed circuit boards (Printed circuit board, PCBs) with computing, control, storage, input and output functions. In various embodiments of the present application, the hardware system may also be generally referred to as a motherboard (or a chip).

A schematic diagram of an operation scenario between a display device and a control device according to an embodiment is exemplarily shown in fig. 1. As shown in fig. 1, a user can operate the display device 200 through the control device 100.

The control device 100 may be a remote controller 100A, which may communicate with the display device 200 through infrared protocol communication, bluetooth protocol communication, zigBee protocol communication, or other short-range communication, for controlling the display device 200 through wireless or other wired modes. The user can control the display device 200 by inputting user instructions through keys, voice input, control panel input, etc. on the remote controller 100A. Such as: the user can input corresponding control commands through volume up-down keys, channel control keys, up/down/left/right movement keys, voice input keys, menu keys, on-off keys, etc. on the remote controller 100A to realize the functions of the control display device 200.

The control device 100 may also be a smart device, such as a mobile terminal 100B, a tablet computer, a notebook computer, etc., which may communicate with the display device 200 through a local network (LAN, local Area Network), a wide area network (WAN, wide Area Network), a wireless local area network (WLAN, wireless Local Area Network), or other networks, and control the display device 200 through an application program corresponding to the display device 200. For example, the display apparatus 200 is controlled using an application running on a 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.

For example, the mobile terminal 100B and the display device 200 may each be provided with a software application, so that connection communication between the two may be implemented through a network communication protocol, thereby achieving the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 100B and the display device 200 can be made to establish a control instruction protocol, the remote control keyboard is synchronized to the mobile terminal 100B, and the function of controlling the display device 200 is realized by controlling the user interface on the mobile terminal 100B; the audio/video content displayed on the mobile terminal 100B may be transmitted to the display device 200, so as to realize the synchronous display function.

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

The display device 200, for example, receives software program updates by sending and receiving information, and by electronic program guide (EPG, electronic Program Guide) interactions, or accesses a remotely stored digital media library. The servers 300 may be one group, may be multiple groups, and may be one or more types of servers. Other web service content such as video on demand and advertising services are provided through the server 300.

The display device 200 includes a display screen 201 and a host 202, wherein the display screen 201 is connected to the host 202 through a connection line 203. More specifically, the host 202 may be connected to a power source and transmit a power signal to the display screen 201 through the connection line 203, thereby supplying power to the display screen 201. Meanwhile, the host 202 may also obtain the content to be displayed from the server 300, and transmit the content to be displayed to the display screen 201 through the connection line 203 in an electrical signal manner, so that the display screen 201 displays the received content to be displayed.

The display device 200 may be a liquid crystal display, a OLED (Organic Light Emitting Diode) display, or a projection display device; in another aspect, the display device may be a smart television or a display system of a display and a set-top box. The particular display device type, size, resolution, etc. are not limited, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

The display device 200 may additionally provide an intelligent network tv function of a computer support function in addition to the broadcast receiving tv function. Examples include web tv, smart tv, internet Protocol Tv (IPTV), etc. In some embodiments, the display device may not have a broadcast receiving television function.

In other examples, more functions may be added or the above functions may be reduced. The function of the display device is not particularly limited in this application.

A block diagram of the configuration of the control apparatus 100 according to the exemplary embodiment is exemplarily shown in fig. 2. 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 device 100 is configured to control the display device 200, and to receive an input operation instruction from a user, and to convert the operation instruction into an instruction recognizable and responsive to the display device 200, and to perform an interaction between the user and the display device 200. Such as: the user operates the channel addition/subtraction key on the control device 100, and the display device 200 responds to the channel addition/subtraction operation.

In some embodiments, the control apparatus 100 may be a smart device. Such as: the control device 100 may install various applications for controlling the display device 200 according to user's needs.

In some embodiments, as shown in fig. 1, a mobile terminal 100B or other intelligent electronic device may function similarly to the control device 100 after installing an application that manipulates the display device 200. Such as: the user may implement the functions of the physical keys of the control apparatus 100 by installing an application, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 100B or other intelligent electronic device.

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

The communicator 130 performs communication of control signals and data signals with the display device 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the display device 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, keys 144, a camera 145, etc. Such as: the user can implement a user instruction input function through actions such as voice, touch, gesture, press, 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 corresponding instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display device 200. In some embodiments, an infrared interface may be used, as well as 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 radio frequency signal interface is used, the user input instruction is converted into a digital signal, and then the digital signal is modulated according to a radio frequency control signal modulation protocol and then transmitted to the display device 200 through the radio frequency transmission terminal.

In some embodiments, the control device 100 includes at least one of a communicator 130 and an output interface. The control device 100 is provided with a communicator 130 such as: the modules such as WIFI, bluetooth, NFC, etc. may send the user input instruction to the display device 200 through the WIFI protocol, or the bluetooth protocol, or the NFC protocol code.

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

The power supply 180 is configured to provide operation power support for each electrical component of the control device 100 under the control of the controller 110. The power supply 180 may use a battery and associated control circuitry to provide power.

Particularly, the core idea of the display device with the rotatable display screen provided by the embodiment of the application is that the display device is specially set for special scenes such as photographing, shaking, K songs and the like, and under the scenes, the effect of the vertical screen is better than that of the horizontal screen. In addition, as a specific implementation, the rotary television is a split television design, a screen end and a box end, and the screen end is only a display screen and a TCON; the box end is provided with a power panel, a main board, a sound box and the like. Between them, through optical fiber lines.

A schematic diagram of the hardware architecture of the hardware system in the display device 200 according to an exemplary embodiment is illustrated in fig. 3. For convenience of description, 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 in the display device 200 includes: a panel 1, a backlight assembly 2, a main board 3, a power board 4, a rear case 5, and a base 6. Wherein the panel 1 is used for presenting pictures to a user; the backlight assembly 2 is located below the panel 1, usually some optical assemblies, and is used for providing enough brightness and uniformly distributed light sources to enable the panel 1 to display images normally, the backlight assembly 2 further comprises a back plate 20, the main plate 3 and the power panel 4 are arranged on the back plate 20, some convex hull structures are usually stamped and formed on the back plate 20, and the main plate 3 and the power panel 4 are fixed on the convex hulls through screws or hooks; the rear shell 5 is arranged on the panel 1 in a covering way so as to hide parts of the display device such as the backlight assembly 2, the main board 3, the power panel 4 and the like, thereby having an attractive effect; and a base 6 for supporting the display device.

Further, the display device is connected to a host (television box) of the display device 200 through an HI-LINK data line, and the host is also connected to a power adapter through an AC data line. Thus, fig. 4 is a schematic diagram of an interface on a display device, where an HI-LINK interface for connecting an HI-LINK data line may be provided, and a TYPE-C interface may be provided.

Optionally, the display screen of the display device may also include a main board and a power board, where the main board of the host is used 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 may be used to transmit power to the motherboard of the display screen, so as to supply power to the display screen, where the display screen may not include the power panel, but only receive power provided by the power panel of the host.

Optionally, fig. 3 further includes a key board 35, where the key board 35 may be disposed on a back plate of the display device, which is not limited in this application.

In addition, the display device 200 further includes a sound reproduction device (not shown in the figure) such as an acoustic component, for example, an I2S interface including a power Amplifier (AMP) and a Speaker (Speaker), etc., for realizing reproduction of sound. Typically, the audio assembly is capable of at least two channels of sound output; when the panoramic surround effect is to be achieved, a plurality of acoustic components need to be provided to output sounds of a plurality of channels, and a detailed description thereof will not be given here.

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

Fig. 5 is a schematic diagram showing a connection relationship between a power panel and a load, and IN the display device shown IN fig. 5, the power panel 4 of the 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 shown IN the figure), where the input terminal IN is connected to a mains supply, the output terminal OUT is connected to the load, for example, the first output terminal OUT1 is connected to an audio 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 terminal OUT4 is connected to the display screen, and the host of the display device transmits the power to the display screen through the HI-LINK connection line, for example, the power may be transmitted to a motherboard of the display screen to supply power to the display screen. The power panel 4 needs to convert ac mains power into dc power required for a load and a display screen, and the dc power generally has different specifications, for example, 18V for an acoustic component, 12V/18V for a main board 31, and the like.

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 merely an exemplary illustration, and is not meant to limit the present application. In actual practice, more or fewer hardware or interfaces may be included as desired.

A hardware architecture block diagram of the display device 200 according to fig. 2, 3 or 4 is exemplarily shown in fig. 6. As shown in fig. 5, the hardware system of the display device 200 may include a controller and a module connected to the controller through various interfaces.

The controller may be provided on the interaction board 32 shown in fig. 2 or on the main board 3 shown in fig. 3. Alternatively, the controller may include a modem 220, a communicator 230, an external device interface 250, a first controller 210, a memory 290, a user input interface 260-3, a video processor 260-1, an audio processor 260-2, a display screen 280 (connected to the display screen 280 through an HI-LINK connection), an audio output interface 270, a power supply module 240, a detector 340, an external device interface 350, and a video processor 360. In other embodiments the controller may include more or fewer modules.

The modem 220 is configured to perform modulation and demodulation processes such as amplification, mixing, and resonance on a broadcast television signal received by a wired or wireless manner, so as to demodulate an audio/video signal carried in a frequency of a television channel selected by a user and additional information (e.g., an EPG data signal) from a plurality of wireless or wired broadcast television signals. Depending on the broadcasting system of the television signal, the signal paths of the modem 220 may be various, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; according to different modulation types, the signal adjustment mode can be a digital modulation mode or an analog modulation mode; and the modem 220 may demodulate analog signals and/or digital signals according to the kind of received television signals.

The tuning demodulator 220 is further configured to respond to the user-selected television channel frequency and the television signal carried by the frequency according to the user selection and controlled by the controller 210.

In other exemplary embodiments, the modem 220 may also be in an external device, such as an external set-top box, or the like. In this way, the set-top box outputs the television audio/video signal after modulation and demodulation, and inputs the signal to the display device 200 through the external device interface 250.

Communicator 230 is a component for communicating with external devices or external servers according to various communication protocol types. For example: communicator 230 may include a WIFI module 231, a bluetooth communication protocol module 232, a wired ethernet communication protocol module 233, and other network communication protocol modules or near field communication protocol modules (not shown) such as an infrared communication protocol module.

The display apparatus 200 may establish a connection of control signals and data signals with an external control device or a content providing device through the communicator 230. For example, the communicator may receive a control signal of the remote controller 100 according to the control of the first controller 210.

The external device interface 250 is a component that provides data transmission between the first controller 210 of the N chip and the a chip and other external apparatuses. The external device interface 250 may be connected to an external device such as a set-top box, a game device, a notebook computer, etc., in a wired/wireless manner, and may receive data such as a video signal (e.g., a moving image), an audio signal (e.g., music), additional information (e.g., an EPG), etc., of the external device.

In some embodiments, the display device is further coupled with one or more sensors through an external device interface. The one or more sensors include, but are not limited to: acceleration sensor, gyroscope sensor, pressure sensor, fingerprint sensor, optical sensor, and proximity sensor.

The acceleration sensor can detect the acceleration on three coordinate axes of a coordinate system established by the Bluetooth device. For example, an acceleration sensor may be used to detect the components of gravitational acceleration in three coordinate axes. The processor may control the touch display 805 to display the user interface in either a landscape view or a portrait view based on the gravitational acceleration signal acquired by the acceleration sensor. The acceleration sensor may also be used for the acquisition of motion data of a game or a user.

The gyro sensor can detect the body direction and the rotation angle of the Bluetooth device, and the gyro sensor can be cooperated with the acceleration sensor to collect the 3D action of the user on the Bluetooth device. The processor can realize the following functions according to the data collected by the gyroscope sensor: motion sensing (e.g., changing UI according to a tilting operation by a user), image stabilization at shooting, game control, and inertial navigation.

The pressure sensor may be disposed at a side frame of the bluetooth device and/or at a lower layer of the touch display screen. When the pressure sensor is arranged on the side frame of the Bluetooth device, the holding signal of the Bluetooth device by a user can be detected, and the processor can perform left-right hand identification or quick operation according to the holding signal acquired by the pressure sensor. When the pressure sensor is arranged at the lower layer of the touch display screen, the processor controls the operability control on the UI according to the pressure operation of the user on the touch display screen. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.

The fingerprint sensor is used for collecting the fingerprint of the user, and the processor is used for identifying the identity of the user according to the collected fingerprint of the fingerprint sensor or identifying the identity of the user according to the collected fingerprint of the fingerprint sensor. Upon identifying the user's identity as a trusted identity, the processor authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying for and changing settings, and the like. The fingerprint sensor may be provided on the front, back or side of the bluetooth device. When the Bluetooth device is provided with a physical key or manufacturer Logo, the fingerprint sensor can be integrated with the physical key or manufacturer Logo.

The optical sensor is used to collect the ambient light intensity. In one embodiment, the processor may control the display brightness of the touch display screen based on the intensity of ambient light collected by the optical sensor. Specifically, when the intensity of the ambient light is high, the display brightness of the touch display screen is increased; when the ambient light intensity is low, the display brightness of the touch display screen is reduced. In another embodiment, the processor may also dynamically adjust the shooting parameters of the camera assembly 806 based on the intensity of ambient light collected by the optical sensor.

Proximity sensors, also known as distance sensors, are typically provided on the front panel of bluetooth devices. The proximity sensor is used to collect the distance between the user and the front of the bluetooth device. In one embodiment, when the proximity sensor detects that the distance between the user and the front surface of the Bluetooth device is gradually reduced, the processor controls the touch display screen to switch from the bright screen state to the off screen state; when the proximity sensor detects that the distance between the user and the front surface of the Bluetooth device gradually increases, the processor controls the touch display screen to switch from the screen-off state to the screen-on state.

Among other things, the external device interface 250 may include: HI-LINK interface, TYPE-C interface. The High Definition Multimedia Interface (HDMI) terminals are also referred to as HDMI 251, the Composite Video Blanking Sync (CVBS) terminals are also referred to as AV 252, the analog or digital component terminals are also referred to as components 253, universal Serial Bus (USB) terminals 254, red Green Blue (RGB) terminals (not shown), etc. The present application is not limited in the number and type of external device interfaces.

The first controller 210 controls the operation of the display device 200 and responds to the user's operations by running various software control programs (e.g., an operating system and/or various application programs) stored on the memory 290.

As shown in fig. 5, the first controller 210 includes a read only memory RAM 213, a random access memory ROM 214, a graphics processor 216, a CPU processor 212, a communication interface 218, and a communication bus. The RAM 213 and the ROM 214 are connected to the graphics processor 216, the CPU processor 212, and the communication interface 218 via buses.

A ROM 213 for storing instructions for various system starts. When the power-on signal is received, the power of the display device 200 starts to be started, the CPU processor 212 executes the system start command in the ROM, and copies the operating system stored in the memory 290 into the RAM 214 to start to run the start operating system. When the operating system is started, the CPU processor 212 copies various applications in the memory 290 to the RAM 214, and then starts running the various applications.

A graphics processor 216 for generating various graphical objects, such as: icons, operation menus, user input instruction display graphics, and the like. The device comprises an arithmetic unit, wherein the arithmetic unit is used for receiving various interaction instructions input by a user to carry out operation and displaying various objects according to display attributes. And a renderer for generating various objects based on the operator, and transmitting the result of rendering to the display device 280 via the HI-LINK data line, and displaying on the display screen 280.

CPU processor 212 is operative to execute operating system and application program instructions stored in memory 290. 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 exemplary embodiments, the CPU processor 212 may include multiple processors. One of the plurality of processors may include one main processor, and a plurality of or one sub-processor. A main processor for performing some operations of the display apparatus 200 in the pre-power-up mode and/or displaying a picture in the normal mode. A plurality of or a sub-processor for performing an operation in a standby mode or the like.

Communication interface 218 may include first interface 218-1 through nth interface 218-n. These interfaces may be network interfaces that are connected to external devices via a network.

The first controller 210 may control operations of the display apparatus 200 related to the display screen 280. For example: in response to receiving a user command for selecting a UI object displayed on the display screen 280, the first controller 210 may perform an operation related to the object selected by the user command.

Wherein the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: operations to connect to a hyperlink page, document, image, etc., or operations to execute a program corresponding to an icon are displayed. The user command for selecting the UI object may be an input command through various input devices (e.g., mouse, keyboard, touch pad, etc.) connected to the display device 200 or a voice command corresponding to a voice uttered by the user.

The memory 290 includes a memory storing various software modules for driving and controlling the display device 200. Such as: various software modules stored in memory 290, including: a base module, a detection module, a communication module, a display control module, a browser module, various service modules, and the like (not shown in the figure).

The base module is a bottom software module for signal communication between the respective hardware in the display device 200 and transmitting processing and control signals to the upper module. The detection module is a management module for collecting various information from various sensors or user input interfaces, and performing digital-to-analog conversion and analysis management. The voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is a module for controlling the first display screen 280 to display image content, and may be used for playing multimedia image content, UI interface and other information. The communication module is used for controlling and data communication with external equipment. The browser module is a module for performing data communication between the browsing servers. The service module is used for providing various services and various application programs.

Meanwhile, the memory 290 is also used to store received external data and user data, images of various items in various user interfaces, visual effect maps of focus objects, and the like.

The user input interface 260-3 is used to transmit an input signal of a user to the first controller 210 or transmit a signal output from the first controller 210 to the user. Illustratively, the control device (e.g., a mobile terminal or a remote controller) may send input signals such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by the user to the user input interface and then transferred to the first controller 210 by the user input interface 260-3; alternatively, the control device may receive an output signal such as audio, video, or data, which is output from the user input interface 260-3 via the first controller 210, and display the received output signal or output the received output signal in an audio or vibration form.

In some embodiments, the user may input a user command through a Graphical User Interface (GUI) displayed on the first display screen 280, and the user input interface 260-3 receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface 260-3 recognizes the sound or gesture through the sensor to receive the user input command.

The video processor 260-1 is configured to receive a video signal, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image composition according to a standard codec protocol of an input signal, so as to obtain a video signal that is directly displayed or played on the first display screen 280.

By way of example, the video processor 260-1 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, etc. (not shown).

The demultiplexing module is used for demultiplexing the input audio/video data stream, such as the input MPEG-2, and demultiplexes the input audio/video data stream into video signals, audio signals and the like.

And the video decoding module is used for processing the demultiplexed video signal, including decoding, scaling and the like.

And an image synthesis module, such as an image synthesizer, for performing superposition mixing processing on the graphic generator and the video picture after the scaling processing according to the GUI signal input by the user or generated by the graphic generator, so as to generate an image signal for display.

A frame rate conversion module, configured to convert a frame rate of an input video, such as converting a frame rate of an input 24Hz, 25Hz, 30Hz, 60Hz video to a frame rate of 60Hz, 120Hz, or 240Hz, where the input frame rate may be related to a source video stream and the output frame rate may be related to a refresh rate of a display device. And a display formatting module for changing the signal output from the frame rate conversion module to a signal conforming to a display format of a display device, such as converting the signal output from the frame rate conversion module to a format to output an RGB data signal.

A display screen 280 for receiving image signals from the video processor 260-1 input. It will be appreciated that in one particular implementation of FIG. 6, both are disposed within the host of the display device, except for the display screen 280; alternatively, in other possible implementations, an audio playing device such as a speaker may be further disposed in the display screen 280, which is not limited in this application. The display screen 280 for displaying video content and images and menu manipulation interface comprises a display screen component for presenting pictures and a drive component for driving the display of images. The video content may be displayed from a video in a broadcast signal received by the modem 220 or may be displayed from a video input from a communicator or an external device interface. The screen 280 is displayed while displaying a user manipulation interface UI generated in the display device 200 and used to control the display device 200.

And, depending on the type of display screen 280, a driving assembly for driving the display. Alternatively, a projection device and projection screen may be included, provided that display screen 280 is a projection display screen.

The audio processor 260-2 is configured to receive the audio signal, decompress and decode according to the standard codec protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing, so as to obtain an audio signal that can be played in the speaker 272.

An audio output interface 270 for receiving the audio signal output from the audio processor 260-2 under the control of the first controller 210, where the audio output interface may include a speaker 272 or an external audio output terminal 274 for outputting to a generating device of an external device, such as: external sound terminals or earphone output terminals, etc.

In other exemplary embodiments, video processor 260-1 may include one or more chip components. The audio processor 260-2 may also include one or more chip components.

And, in other exemplary embodiments, the video processor 260-1 and the audio processor 260-2 may be separate chips or integrated with the first controller 210 in one or more chips.

The power supply module 240 is configured to provide power supply support for the display device 200 with power input from an external power source under the control of the first controller 210. The power supply module 240 may include a built-in power circuit installed inside the display device 200, or may be a power source installed outside the display device 200, such as a power interface providing an external power source in the display device 200.

The detector 340 is a component of the display device a chip for collecting signals of the external environment or interacting with the outside. The detector 340 may include a light receiver 342, a sensor for capturing ambient light intensity, a display parameter change that may be adapted by capturing ambient light, etc.; the system can also comprise an image collector 341, such as a camera, a video camera and the like, which can be used for collecting external environment scenes, collecting attributes of a user or interacting gestures with the user, adaptively changing display parameters and identifying the gestures of the user so as to realize the interaction function with the user.

The external device interface 350 provides a component for data transfer between the second controller 310 and the N-chip or other external device. The external device interface may be connected with external apparatuses such as a set-top box, a game device, a notebook computer, and the like in a wired/wireless manner.

A video processor 360 for processing the relevant video signals.

It will be appreciated by those skilled in the art that the structures shown in the above figures do not constitute limitations on the display device, and may include more or fewer components than shown, or may combine certain components, or may employ different arrangements of components.

A functional configuration diagram of a display device according to an exemplary embodiment is exemplarily shown in fig. 7. As shown in fig. 7, the memory 290 is specifically configured to store an operation program for driving the first controller 210 in the display device 200, and store various application programs built in the display device 280, various application programs downloaded by a user from an external device, various graphic user interfaces related to the application programs, various objects related to the graphic user interfaces, user data information, and various internal data supporting the application programs. The memory 290 is used to store system software such as an Operating System (OS) kernel, middleware and applications, and to store input video data and audio data, as well as other user data.

The memory 290 is specifically used for storing drivers and related data such as the video processor 260-1 and the audio processor 260-2, the first display screen 280, the communicator 230, the modem 220, the input/output interface, and the like.

In some embodiments, memory 290 may store software and/or programs, the software programs used to represent an Operating System (OS) including, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. For example, the kernel may control or manage system resources, or functions implemented by other programs (such as the middleware, APIs, or application programs), and the kernel may provide interfaces to allow the middleware and APIs, or applications to access the controller to implement control or management of system resources.

By way of example, the memory 290 includes a broadcast receiving module 2901, a channel control module 2902, a volume control module 2903, an image control module 2904, a display control module 2905, a first audio control module 2906, an external instruction recognition module 2907, a communication control module 2908, a light receiving module 2909, a power control module 2910, an operating system 2911, and other applications 2912, a browser module 2913, and the like. The first controller 210 executes various software programs in the memory 290 such as: broadcast television signal receiving and demodulating functions, television channel selection control functions, volume selection control functions, image control functions, display control functions, audio control functions, external instruction recognition functions, communication control functions, optical signal receiving functions, power control functions, software control platforms supporting various functions, browser functions and other various functions.

Memory 390 includes storage for various software modules for driving and controlling display device 200. Such as: various software modules stored in memory 390, including: a base module, a detection module, a communication module, a display control module, a browser module, various service modules, and the like (not shown in the figure). Since the functions of the memory 390 and the memory 290 are similar, the relevant portions will be referred to as the memory 290, and will not be described herein.

By way of example, the memory 390 includes an image control module 3904, a second audio control module 3906, an external instruction recognition module 3907, a communication control module 3908, a light receiving module 3909, an operating system 3911, and other application programs 3912, a browser module 3913, and the like. The first controller 210 executes various software programs in the memory 290 such as: image control function, display control function, audio control function, external instruction recognition function, communication control function, optical signal receiving function, power control function, software control platform supporting various functions, browser function and other various functions.

For example, since the image receiving device such as a camera is connected to the controller, the external command recognition module 3907 of the controller may include a graphic recognition module 2907-1, where a graphic database is stored in the graphic recognition module 3907-1, and when the camera receives an external graphic command, the camera performs a correspondence with the command in the graphic database to perform command control on the display device. Since the voice receiving device and the remote controller are connected with the controller, the external command recognition module 2907 of the controller may include a voice recognition module 2907-2, where a voice database is stored in the voice recognition module 2907-2, and when the voice receiving device receives an external voice command or when the voice receiving device receives an external voice command, the voice receiving device and the like perform a corresponding relationship with the command in the voice database, so as to perform command control on the display device. Similarly, the control device 100 such as a remote controller is connected to the controller, and the key instruction recognition module 2907-3 performs instruction interaction with the control device 100.

The foregoing schematic structural diagrams of the display device provided in the present application are shown in fig. 1 to 7, and the display device provided in the present application is merely illustrative, and the display device provided in the present application may be the display device described in fig. 1 to 7, or may be other types of display devices, which are not limited.

More specifically, as a comparison, fig. 8 is a schematic diagram of a power supply circuit of a display device, and fig. 8 shows a power supply circuit of a display device without a split display screen in the prior art, wherein in the display device 17, a power plug 11, a rectifier bridge 12, a power factor correction (Power Factor Correction, abbreviated as PFC) module 13, and a resonant conversion circuit (LLC) module 14 are provided in this order. Wherein the power plug 11, the rectifier bridge 12, the PFC module 13 and the LLC module 14 are connected in sequence.

The rectifier bridge 12 is used for rectifying the commercial alternating current with the specification of 110-240V and 50/60Hz input by the power plug 11, and inputting a full-wave signal after rectification to the PFC module 13. An electromagnetic interference (Electromagnetic Interference, EMI) filter (not shown in fig. 8) may be connected to the ac power source before the ac power source is input to the PFC module 13, to high-frequency filter the input ac power source.

The PFC module 13 generally includes a PFC inductor, a switching power device, and a PFC control chip, and mainly performs power factor correction on an input ac power supply, and outputs a stable dc bus voltage (e.g., 380V) to the LLC module 14. The PFC module 13 can effectively improve the power factor of the power supply, and ensure the same phase of voltage and current.

The LLC module 14 may employ a dual MOS tube LLC resonant conversion circuit, and typically a synchronous rectification circuit is disposed in the LLC module 14, and the synchronous rectification circuit may mainly include a transformer, a controller, two MOS tubes, and a diode. The LLC module 14 may also include pulse frequency adjustment (Pulse frequency modulation, PFM) circuits, capacitors, inductors, and other components. The LLC module 14 may specifically step down or step up the dc bus voltage input from the PFC module 13, and output a constant voltage to the load. Typically, the LLC module 43 is capable of outputting a variety of different voltages to meet the demands of different loads.

In fig. 8, the load to which the LLC module 14 is connected includes a main board 15 and a backlight driver 16, and the LLC module 14 may output different voltages to the main board 15 and the backlight driver 16, respectively, for example, output a voltage of 12V to the main board to supply power to the main board 15, or output a voltage of 90V to the backlight driver 16, so that the backlight driver 16 is turned on by driving the backlight 17.

All the components of the display device shown in fig. 8 are disposed as a whole in the display device 10, and the host of the split display screen needs to supply power to the display screen through an external connection line, so that the direct connection type power supply circuit shown in fig. 8 is not directly applied to the split display device, and therefore, how to supply power to the display device through the external connection line to the host of the split display device is a technical problem to be solved by the present application.

The technical scheme of the present application is described in detail below with specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Fig. 9 is a schematic structural diagram of an embodiment of a display device provided in the present application, where the display device shown in fig. 9 may be a display device as shown in any one of fig. 1 to 7, or may be other display devices not shown in fig. 1 to 7. Specifically, the display device provided in this embodiment includes: the display device comprises a host 1 and a display screen 2, wherein the display screen 2 is arranged outside the host 1 and is arranged in a split type with the host 1, namely, the host 1 and the display screen 2 are arranged independently, so that the display device with the split display screen is realized. The host 1 at least comprises a power panel 101 and a main board 102, and the host 1 is connected with the display screen 2 through the main board 102 and a connecting line 3. It should be noted that the host 1 may also be referred to as a box, a box end, or the like, the display screen 2 may also be referred to as a screen end, and the connection line may also be referred to as an HI-LINK line, or the like.

The main board 102 in the host 1 may be used to determine a picture to be displayed on the display screen 2, and send an optical signal of the picture to be displayed to the display screen 2 through the connection line 3 or bluetooth, wi-Fi or other wireless communication modes, etc., so that a specific sending mode of the optical signal of the display screen and a transmission mode of the optical signal in the connection line 3 are not limited, and the display screen 2 may be a display mode combining a backlight and a display structure. The display structure of the display screen may be, for example, a liquid crystal display (Liquid Crystal Display, abbreviated as LCD), an Organic Light-Emitting Diode (OLED), a laser projection hard screen, an image display film, or a touch control film, etc., and the display screen 2 may display a picture corresponding to the optical signal on the display structure and cooperate with backlight illumination of the display screen to realize the display function together.

In this embodiment, after the power board 101 of the host 1 is connected to the power supply, power may be supplied to the motherboard 102, and the power board 101 may also supply power to the display screen 2 through the motherboard 102 and the connection wire 3, where the power supply to the display screen 2 includes, but is not limited to, supplying power to a backlight module used for implementing backlight in the display screen 2. The present application describes power supply to a backlight module of a display screen 2 as an exemplary illustration. Specifically, the host 1 receives a power input of a commercial ac power with a specification of 100-240V and 50-60Hz through the power panel 101, and can convert the ac power into a dc power of, for example, 90V required by the backlight module in the display screen 2 and a dc power of, for example, 12V required by the main board 102, and then transmit the dc power of 12V to the main board 102 to supply power, and transmit the dc power of 90V to the display screen 2 sequentially through the main board 102 and the connection line 3 to supply power to the backlight module in the display screen 2.

Alternatively, the main board 102 may be used to provide an interface where the host 1 is connected to the connection line 3, and after the power board 101 generates a direct current for supplying power to the display screen 2, the direct current may be transmitted to the interface of the main board 102, then transmitted to the connection line 3 through the interface, and finally transmitted to the display screen 2 through the connection line 3.

In particular, the connection lines used by the main board 102 to transmit the optical signal to the display screen 2 and the connection lines used by the main board 102 to direct current to the display screen 2 may be different connection lines integrated in the connection line 3 as shown in fig. 9. The mode of this kind of integrated connecting wire can make things convenient for display device's cartridge to and promote display device's whole outward appearance effect. The integrated connection line 3 may be a Hi-link connection line in a specific implementation. That is, the connection line 3 as shown in fig. 9 may be understood as a set including a plurality of connection lines, which may be of various specifications, capable of transmitting different signals, for example, the main board 102 transmits an optical signal through an optical signal connection line in the connection line 3, and transmits an electrical signal through an electrical signal connection line in the connection line 3.

The form and mode of the optical signal transmitted in the connection line 3 are not limited, and the electrical signal transmitted in the connection line 3 may be implemented by two electrical signal connection lines, namely, a positive (+) power supply line and a negative (-power supply line. When the backlight module of the display screen 2 is connected through the backlight drive, the backlight drive can also feed back the working states of the voltage, the current and the like of the backlight module to the power panel 101 through the feedback line in the connecting line 3, so that the power panel 101 can adjust the voltage of the electric energy transmitted to the display screen 2, the backlight module is ensured to work according to rated current, and the loss is reduced. That is, the number of connection lines for power supply provided in the connection line 3 in the present embodiment is at most three.

In summary, in the display device provided by the embodiment of the application, the problem of connection of the host 1 to the display screen 2 in the split display device is solved by the external connecting wire 3 between the host 1 and the display screen 2, and the power supply to the display screen 2 is realized by the three connecting wires in the connecting wire 3 which is the most communicated with the host 1, so that the host can supply power to the display screen by the host through the connecting wires, and only three interfaces for supplying power to the display screen 2 are required to be provided on the main board 102, thereby simplifying the structure related to the power supply of the host 1 to the display screen 2 in the split display device, and ensuring that the structure is simpler. Meanwhile, the implementation forms of the positive electrode electric signals, the negative electrode electric signals and the feedback signals transmitted in the three connecting lines can be direct current electric signals, so that when the three connecting lines for supplying power and the connecting line for transmitting the optical signals are integrally arranged in one connecting line 3, the direct current electric signals have no alternating current component, and the three connecting lines have no electromagnetic interference capability due to switching values caused by frequent switching on and switching off of similar alternating current, thereby improving the electromagnetic compatibility (Electro Magnetic Compatibility, for short: EMC) performance of the connecting line 3.

Further, based on the display device shown in fig. 9, the present application further provides a specific structure of a host and a display screen, where, in order to realize that the host supplies power to the display screen through a connection line in the split display device, in this embodiment, a power supply circuit for supplying power to the display screen in the display device is split into a power supply portion and a driving portion, the power supply portion is disposed in the host, the driving portion is disposed in the display screen, and the power supply portion and the driving portion may be connected through a connection line and jointly realize that power is supplied to a backlight module of the display screen.

Specifically, fig. 10 is a schematic structural diagram of a host of the display device provided in the present application, as shown in fig. 10, on a power board 101 in a host 2 of the display device, a power plug 11, a rectifier bridge 12, and a PFC module 13 are sequentially disposed, and functions of the power plug 11, the rectifier bridge 12 (may also be referred to as rectification filtering), and the PFC module 13 may refer to the embodiment shown in fig. 8. In particular, two LLC modules (which may also be referred to as LLC isolated voltage conversion) are provided on the power board 101 of the host 1 as shown in fig. 10, denoted as a first LLC module 141 and a second LLC module 142, wherein the first LLC module 141 is connected to the PFC module 13 and the main board 102, is configured to voltage-regulate the direct current output from the PFC module 13, and outputs a required voltage, for example, 12V, 16V, 18V, or the like, to the main board 102 to supply power to the main board 102. The second LLC module 142 is connected to the PFC module 13 and the main board 102, and is configured to regulate the voltage of the direct current output by the PFC module 13, and supply the voltage required for backlight, for example, 90V, 150V, to the display screen 2 through the main board 102 and the connection line 3, so as to supply power to the display screen 2.

Alternatively, the motherboard 102 may provide the interface 151 of the connection line 3, and then the positive voltage and the negative voltage generated by the second LLC module 142 in the power board 101 may be transferred to the motherboard 102 via the connection line (1) and the connection line (2), respectively, and then transferred to the connection line 3 via the interface 151 of the motherboard 102, and finally transferred to the display screen 2 via the connection line 3. Meanwhile, a feedback signal sent to the second LLC module 142 by the backlight driving of the display screen 2 may be sent to the main board 102 of the host 1 through the connection line 3 and the interface 151, and sent to the second LLC module 142 through the connection line (3), so that the second LLC module 142 can adjust the positive voltage and the negative voltage provided to the display screen according to the feedback signal. The LLC module is not limited to specific implementation and principle of output voltage adjustment according to feedback signals, and reference can be made to the prior art, and the feedback signals can comprise working states such as voltage and current of a backlight module of a display screen.

In summary, in the display device provided in this embodiment, two LLC modules are disposed in a power board of a motherboard, which respectively provides low-voltage power for operation of the motherboard, and provides high-voltage power for a backlight module of a display screen, so as to distinguish between the operating voltage of the motherboard and the voltage of an external display screen, and especially output the external high voltage through a single LLC module, so that the switch of the LLC module can realize the switch of the display screen without power failure of the motherboard. The LLC module can be rapidly turned off when the external connecting wire is disconnected due to reasons, so that the voltage on the external connecting wire can be rapidly reduced, potential safety hazards caused by high voltage output after the connecting wire is disconnected are avoided, the safety performance of the external connecting wire of the display device is improved, and the safety requirement of the display device is met.

Fig. 11 is a schematic structural diagram of a display screen of a display device provided by the present application, where the display screen provided in this embodiment may adopt a structure that an MCU and a backlight drive are combined to realize power supply to a backlight module, and meanwhile, since a main board may directly transmit electric energy to the display screen through a connection line, the display screen does not need to be connected to a power supply by itself, so that an independent power board may not be provided in the display screen. Specifically, as shown in fig. 11, the display screen 2 provided in the present embodiment includes: a backlight driver 23 (which may also be referred to as a constant current control chip) and a backlight module 24, wherein the backlight driver 23 may be used to receive power transmitted from the host 1 through the connection line 3 and to drive the backlight module 24 to light up according to the received power, and the backlight module 24 of the display screen is used to light up an image displayed by a display structure, which is not shown in the figure.

Alternatively, the display device 2 may provide the interface 21 of the connection line 3, and then the backlight driver may receive the positive voltage and the negative voltage sent by the host 1 through the connection line (1) and the connection line (2) of the interface 21, respectively, and at the same time, the backlight driver 23 may also send a feedback signal for indicating the operation state of the backlight module 24 to the host 1 through the connection line (3) of the interface 21, so that the second LLC module 142 in the host 1 can adjust the provided positive voltage and negative voltage according to the feedback signal.

In particular, the backlight driver 23 of the display device 2 provided in the present embodiment is further provided with a micro control unit (Microcontroller Unit, abbreviated as MCU) 22 for initializing the backlight driver 23. In addition to the backlight driver 23, the MCU22 is connected to a System-on-a-Chip (SoC) 152 provided on the motherboard 102 of the host 1. Specifically, the SOC152 and the MCU22 may be connected by an I2C connection line, an SPI connection line, or other serial connection lines between the host 1 and the display device 2, and the interface 151 of the host and the interface 21 of the display device 2 may be a two-wire serial bus (Inter-Integrated Circuit, abbreviated as I2C) connection line, a serial peripheral interface (Serial Peripheral Interface, abbreviated as SPI) connection line, or a serial connection line, where the I2C connection line, the SPI connection line, or the serial connection line may be separately set, or may be set in the connection line 3, so that only one connection line between the host 1 and the display device 2 is seen from the outside. Then, after the host 1 is turned on, the SOC152 may send a control command to the MCU22 through the I2C connection line, the SPI connection line, or the serial connection line, and after the control command is received by the MCU22, the backlight driver 23 may be initialized according to the control command, so that the backlight driver 23 starts to operate.

In addition, the MCU22 in the display screen 2 of the present embodiment may also be used as a slave device of the SOC152 in the host 1, and the operating state of the backlight driver 23 is stored by opening a register in the MCU22, so that the SOC152 can read the operating state of the backlight driver 23 stored in the MCU22 through the I2C connection line, the SPI connection line, or the serial connection line.

Illustratively, table 1 below shows one manner in which MCU22 stores backlight driver 23 via registers.

TABLE 1

The BLU On/Off is used for indicating that the backlight driver is in the On state or the Off state currently, the hardware address of the MCU 0x88 is stored, the data in the hardware address can be put into a cache address with the number of 0x10 when the SoC reads, the data format of the BLU On/Off is '0 x 01' indicating that the backlight driver is in the On state, and '0 x 00' indicating that the backlight driver is in the Off state. Similarly, BLU Dimming is used to represent the brightness of the backlight module adjusted by the backlight driving, and is represented by a value between 0 and 255. The BLU Status is used to indicate whether the backlight driver can receive the control command sent by the SoC, the BLU Ready is used to indicate the read-write Status supported by the backlight driver, and the BLU Firmware Version is used to indicate the firmware version of the backlight driver.

Further, for the display device with the structure shown in fig. 9 and 10, in order to ensure the safety of the external connection line, a corresponding setting needs to be performed on the time sequence of the electric energy transmitted from the host to the display device, for example, after the main board receives the electric energy transmitted from the power panel to the display screen, the SoC sends a control signal to the MCU, so that the MCU performs an initialization operation on the backlight driving according to the control signal, and after the initialization of the backlight driving is completed, the backlight driving can directly receive the electric energy transmitted from the host and supply power to the backlight module. Finally, the MCU may acquire the operating state of the backlight driver after the initialization of the backlight driver is completed, and store the operating state of the backlight driver into a register of the MCU.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the present application in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present application still fall within the scope of the technical solutions of the present application.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, comprising:

the display screen comprises a host, a display screen which is designed separately from the host and a connecting wire; the host is connected with the display screen through the connecting wire, and is used for determining a picture to be displayed and sending a signal of the picture to be displayed to the display screen, and the host is also used for supplying power to the display screen;

wherein the host comprises: a power panel and a main board; the power panel is connected with the main board, and the main board is connected with the display screen through a connecting wire; the power panel is used for supplying power to the main board, is also used for converting commercial alternating current into direct current of the working voltage of the display screen, and supplies power to the display screen through the main board and the connecting line;

the connecting wire includes: positive power supply line, negative power supply line and feedback line;

the positive power supply line and the negative power supply line are used for transmitting electric energy to the display screen, the feedback line is used for receiving a feedback signal of the display screen, the feedback signal is used for adjusting the voltage of the electric energy transmitted to the display screen by the power panel, and the positive electric signal, the negative electric signal and the feedback signal are all direct current signals;

The display screen comprises a backlight driver and a backlight module; the backlight driver is connected with the main board through the connecting wire, and is also connected with the backlight module;

the backlight drive is used for receiving the electric energy transmitted by the main board through the positive power supply line and the negative power supply line and driving the backlight module to work through the received electric energy;

the backlight driver is further configured to send a working state of the backlight module to the power panel through the feedback line and the motherboard;

the main board comprises: a system-on-chip (SoC) connected with the MCU in the display screen;

the SoC is used for generating a control command and sending the control command to the MCU, wherein the control command is sent by the main board after receiving the electric energy transmitted from the power panel to the display screen; the control command is used to instruct the MCU to initialize the backlight drive.

2. The display device of claim 1, wherein the display device comprises a display device,

the positive power supply line, the negative power supply line and the feedback line are arranged in a Hi-link connecting line.

3. The display device according to claim 1 or 2, wherein,

The power panel includes: the power supply plug, the rectifier bridge, the power factor correction PFC module, the first resonant converter LLC module and the second LLC module; the power plug, the rectifier bridge and the PFC module are connected in sequence, and the PFC module is respectively connected with the first LLC module and the second LLC module;

the first LLC module is further connected with the main board, and is used for generating a first voltage and supplying power to the main board through the first voltage;

the second LLC module is further connected with the backlight drive in the display screen through the main board and the connecting line, and is used for generating a second voltage and supplying power for the display screen through the second voltage.

4. The display device of claim 1, wherein the display device comprises a display device,

the display screen further includes: the MCU is connected with the backlight driver and the mainboard;

the MCU is used for receiving a control command sent by the main board and initializing the backlight drive according to the control command.

5. The display device of claim 2, wherein the display device comprises a display device,

the MCU is also used for acquiring and storing the working state of the backlight drive;

The SoC is also used for reading the working state of the backlight drive stored by the MCU.

6. The display device of claim 5, wherein the display device comprises a display device,

the SoC is connected with the MCU specifically through an I2C connecting wire, an SPI connecting wire or a serial port connecting wire.

7. The display device of claim 6, wherein the display device comprises a display device,

the I2C connecting line, the SPI connecting line or the serial port connecting line is arranged in the Hi-link connecting line.