CN113163237A

CN113163237A - Display device

Info

Publication number: CN113163237A
Application number: CN202010337183.1A
Authority: CN
Inventors: 张洪浩; 庞震华
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-01-22
Filing date: 2020-04-26
Publication date: 2021-07-23
Anticipated expiration: 2040-04-26
Also published as: CN113157612B; CN113163140B; CN113163238B; CN113163538A; CN113163242A; CN113163243B; CN113163142A; CN113163239A; CN113157358B; CN113163142B; CN113163240A; CN113157358A; CN113163140A; CN113163237B; CN113163239B; CN113163241A; CN113163143A; CN113163241B; CN113157612A; CN113163238A

Abstract

The application provides a display device, this display device includes: the power supply board and the mainboard are arranged in the host; the power panel is connected with the mainboard, and the mainboard of the host is connected with the display screen through the connecting wire; the power panel is used for controlling power supply to the display screen according to level change of the connecting pins of the mainboard and the power panel. The scheme improves the safety of the connecting line interface.

Description

Display device

The present application claims priority from the chinese patent application filed on 22/1/2020, having application number 2020100747123 and entitled "display device," which is incorporated herein by reference in its entirety.

Technical Field

The present application relates to electronic technologies, and in particular, to a display device.

Background

Currently, a split display device, such as a split tv, is a new tv format. In the split type television, the host provides image pictures for the independent display screen, so that the independent display screen can be designed to be lighter and thinner.

The host of the display device transmits a display signal to the display screen through the external connecting wire and also transmits the electric energy provided by the power panel to the display screen for power supply. The structure ensures that the backlight high-voltage level needs to be output through an interface of the host computer and a connecting wire of the display screen. In the related art, in order to improve the safety, a shielding cover plate is additionally arranged at the interface of the connecting wire, so that when the connecting wire is not inserted, strong electricity is not accessible, but potential safety hazards still exist in the scheme.

Disclosure of Invention

The application provides a display device to improve the security at the kneck of connecting wire.

The application provides a display device, including:

the power supply board and the mainboard are arranged in the host; the power panel is connected with the mainboard, and the mainboard of the host is connected with the display screen through the connecting wire;

the power panel is used for controlling power supply to the display screen according to level change of the connecting pins of the mainboard and the power panel.

The application provides a display device, the level change of the connecting pin of mainboard and power strip can be influenced to the connecting condition of connecting wire and the mainboard of host computer and display screen, and the power strip is according to the level change of connecting pin, control to the display screen power supply has improved the security of connecting wire kneck.

Drawings

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

Fig. 1 is a schematic view of an operation scenario between a display device and a control device according to an embodiment of the present disclosure;

fig. 2 is a block diagram of a configuration of a control device according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating an architecture of a display device according to an embodiment of the present application;

FIG. 4 is a schematic interface diagram of a display screen according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a connection relationship between a power board and a load according to an embodiment of the present application;

FIG. 6 is a block diagram of a hardware architecture of a display device according to an embodiment of the present application;

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

FIG. 8 is a schematic structural diagram of an embodiment of a display device provided in the present application;

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

fig. 10 is a schematic diagram of a power board structure of a host according to an embodiment of the present application;

fig. 11 is a schematic diagram of a power board structure of a host according to another embodiment of the present application;

fig. 12 is a schematic diagram of a power board structure of a host according to another embodiment of the present application;

fig. 13 is a schematic diagram illustrating a discharge principle of a power board according to an embodiment of the present application;

fig. 14 is a schematic diagram of a power board structure according to another embodiment of the present disclosure;

fig. 15 is a schematic diagram of a discharge circuit according to an embodiment of the present application;

fig. 16 is a schematic diagram of a discharge circuit according to another embodiment of the present application;

fig. 17 is a flowchart illustrating an exemplary process according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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.

The present application is directed to a split display device, and the structure, function, and implementation of the display device will be described in detail below.

Some display devices with split type are currently a new type, for example: a split TV. The separate type display apparatus can separate the display screen from the display apparatus main body as a separate structure setting, 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, the host also supplies power to the display screen and transmits the content to be displayed to the display screen for display, and the display device is used for displaying the content to be displayed transmitted by the host. By adopting the split structure, the display screen of the display device can be thinner and thinner.

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 "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 and/or 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 (e.g., a display device as disclosed herein) that is capable of wirelessly controlling the electronic device, typically over a relatively 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 referred to as a motherboard (or chip).

Fig. 1 schematically shows an operation scenario between a display device and a control device according to an embodiment. As shown in fig. 1, a user may operate the display device 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 through a wireless or other wired manner. The user can 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. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right movement keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller 100A to control the functions of the display device 200.

The control device 100 may also be an intelligent 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 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 apparatus 200 is controlled using an application program 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 installed with a software application, so that connection communication between the two can be realized through a network communication protocol, and the purpose of one-to-one control operation and data communication can be further realized. Such as: a control instruction protocol can be established between the mobile terminal 100B and the display device 200, a remote control keyboard is synchronized to the mobile terminal 100B, and the function of controlling the display device 200 is realized by controlling a user interface on the mobile terminal 100B; the audio/video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.

As shown in fig. 1, the display device 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 wired or 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 apparatus 200.

Illustratively, the display device 200 receives software Program updates, or accesses a remotely stored digital media library by sending and receiving information, and Electronic Program Guide (EPG) interactions. The servers 300 may be a group or groups, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service 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 further 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, on one hand, a liquid crystal display, an oled (organic Light Emitting diode) display, or 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 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 apparatus 200 may additionally provide an intelligent network tv function providing a computer support function in addition to the broadcast receiving tv function. Examples include a web tv, a smart tv, an Internet Protocol Tv (IPTV), and the like. In some embodiments, the display device may not have a broadcast receiving television function.

In other examples, more or less functionality may be added. The function of the display device is not particularly limited in the present application.

Fig. 2 is a block diagram schematically showing the configuration of the control apparatus 100 according to the exemplary embodiment. Such as

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 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 key on 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 for controlling the display apparatus 200 according to user's demands.

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

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 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, 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 device 200. In some embodiments, it may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input command 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. The following steps are repeated: 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.

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

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.

In an embodiment, the display device provided in the embodiment of the present application may have a rotatable display screen, that is, the display screen is specially configured for some special scenes, such as taking a picture, shaking a sound, and singing a song. In addition, as a specific implementation, the rotary television is a split television design, and comprises a screen end and a box end, wherein the screen end is only a display screen and a TCON; the box end is provided with a power panel, a mainboard, a sound and the like. They are transmitted by optical fiber lines.

An architectural diagram of a display device 200 according to an exemplary embodiment is exemplarily shown in fig. 3. For convenience of explanation, the display device 200 in fig. 3 is illustrated by using a liquid crystal display screen as an example.

For convenience of explanation, the display device 200 in fig. 3 is illustrated by using a liquid crystal display screen as an example.

As shown in fig. 3, the display screen in the display apparatus 200 is connected to a host (tv box) of the display apparatus 200 via a HI-LINK data line, and further, the host is connected to a power supply. Therefore, fig. 4 is a schematic diagram of an interface on a display screen, and an HI-LINK interface for connecting an HI-LINK data line, a TYPE-C interface, and the like may be provided on the display screen.

Optionally, the host of the display device includes a main board and a power board, and the main board of the host 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 display screen may include: panel, backlight assembly, mainboard, backshell etc.. Wherein, the panel is used for presenting pictures for users; the backlight assembly is located below the panel, and is usually some optical assemblies for supplying sufficient light source with uniform brightness and distribution, so that the panel can normally display images; the back shell is arranged on the panel to hide the parts of the display screen such as the backlight assembly, the mainboard and the like.

Optionally, the display screen in fig. 3 may further include a key sheet, and the key sheet 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 reproducing device (not shown), such as an audio component, e.g., an I2S interface including a power Amplifier (AMP) and a Speaker (Speaker), for realizing sound reproduction. 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 screen 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 a 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 of a host includes an input terminal IN and an output terminal OUT (a first output terminal OUT1, a second output terminal OUT2, and a third output terminal OUT3 are illustrated), wherein 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. The host computer of the display device transmits the power supply to the display screen through the HI-LINK connecting 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 panel needs to convert ac power into dc power required by the load and the display screen, and the dc power is usually in 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.

Fig. 6 is a block diagram illustrating an exemplary hardware architecture of the display apparatus 200 according to fig. 2, 3 or 4. As shown in fig. 6, the hardware system of the display device 200 may include a controller, and modules connected to the controller through various interfaces.

Wherein the controller may be provided on the interactive board 32 shown in fig. 2 or on the main board 3 shown in fig. 3. Alternatively, the controller may include a tuning demodulator 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 (the display screen 280 is connected through a HI-LINK connection line), an audio output interface 270, a power supply module 240, a detector 340, an external device interface 350, and a video processor 360. The controller may include more or fewer modules in other embodiments.

The tuning demodulator 220 is configured to perform modulation and demodulation processing such as amplification, mixing, resonance and the like on a broadcast television signal received in 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 broadcast system of the television signal, the signal path of the tuner 220 may be various, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; according to different modulation types, the adjustment mode of the signal can be a digital modulation mode or an analog modulation mode; and depending on the type of television signal being received, tuner demodulator 220 may demodulate analog and/or digital signals.

The tuner demodulator 220 is also operative to respond to the user-selected television channel frequency and the television signals carried thereby, in accordance with the user selection, and as controlled by the controller 210.

In other exemplary embodiments, the tuner/demodulator 220 may be in an external device, such as an external set-top box. In this way, the set-top box outputs television audio/video signals after modulation and demodulation, and the television audio/video signals are input into the display device 200 through the external device interface 250.

The communicator 230 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the 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 such as an infrared communication protocol module or a near field communication protocol module (not shown).

The display apparatus 200 may establish a connection of a control signal and a data signal 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 for providing data transmission between the N-chip first controller 210 and the a-chip and other external devices. The external device interface 250 may be connected with an external apparatus 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., moving image), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.

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

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

The gyroscope sensor can detect the organism direction and the turned angle of the bluetooth device, and the gyroscope sensor can cooperate with the acceleration sensor to acquire 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 (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.

The pressure sensor can be arranged on the side frame of the Bluetooth device and/or on the lower layer of the touch display screen. When pressure sensor set up the side frame at bluetooth equipment, can detect the user to the signal of gripping of bluetooth equipment, grip the signal by the treater according to pressure sensor collection and carry out left right hand discernment or swift operation. When the pressure sensor is arranged at the lower layer of the touch display screen, the processor controls the operable control on the UI interface according to the pressure operation of the user on the touch display screen. The operability control comprises 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 fingerprints of users, and the identity of the users is identified by the processor according to the fingerprints collected by the fingerprint sensor, or the identity of the users is identified by the fingerprint sensor according to the collected fingerprints. And when the identity of the user is identified as a credible identity, the processor authorizes the user to execute relevant sensitive operations, wherein the sensitive operations comprise screen unlocking, encrypted information viewing, software downloading, payment, setting change and the like. The fingerprint sensor may be provided on the front, back or side of the bluetooth device. When a physical button or a manufacturer Logo is provided on the bluetooth device, the fingerprint sensor may be integrated with the physical button or the manufacturer Logo.

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

Proximity sensors, also known as distance sensors, are typically provided on the front panel of the bluetooth device. 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 face of the Bluetooth device is gradually reduced, the processor controls the touch display screen to be switched from a bright screen state to a dark screen state; when the proximity sensor detects that the distance between the user and the front face of the Bluetooth device is gradually increased, the processor controls the touch display screen to be switched from the screen-off state to the screen-on state.

The external device interface 250 may include: HI-LINK interface and TYPE-C interface. A High Definition Multimedia Interface (HDMI) terminal also referred to as HDMI 251, a Composite Video Blanking Sync (CVBS) terminal also referred to as AV 252, an analog or digital component terminal also referred to as component 253, a Universal Serial Bus (USB) terminal 254, a Red Green Blue (RGB) terminal (not shown in the figure), and the like. The number and type of external device interfaces are not limited by this application.

The first controller 210 controls the operation of the display apparatus 200 and responds to the operation of the user 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 graphic processor 216, a CPU processor 212, a communication interface 218, and a communication bus. The RAM 213 and the ROM 214, the graphic processor 216, the CPU processor 212, and the communication interface 218 are connected via a bus.

A ROM 213 for storing instructions for various system boots. If the display device 200 is powered on when a power-on signal is received, the CPU processor 212 executes a system boot instruction in the ROM and copies the operating system stored in the memory 290 to the RAM 214 to start running the boot operating system. After the start of the operating system is completed, the CPU processor 212 copies the various application programs in the memory 290 to the RAM 214, and then starts running and starting the various application programs.

A graphics processor 216 for generating 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 a renderer for generating various objects based on the operator, and the rendered result is transmitted to the display device 280 through the HI-LINK data line and displayed by the display screen 280.

A CPU processor 212 for executing 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 a plurality of processors. The plurality of processors may include a main processor and a plurality of or a sub-processor. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations for displaying a screen in a normal mode. A plurality of or one sub-processor for performing an operation in a standby mode or the like.

The communication interface 218 may include a first interface 218-1 through an 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 in relation to the display screen 280. For example: in response to receiving a user command for selecting a UI object to be 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: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to an icon. The user command for selecting the UI object may be a command input through various input devices (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display device 200 or a voice command corresponding to a voice spoken by the user.

The memory 290 includes various software modules for driving and controlling the display apparatus 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, and various service modules, etc. (not shown in the figure).

The basic module is a bottom layer software module for signal communication between hardware in the display device 200 and for sending processing and control signals to an upper layer module. The detection module is a management module used 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 to play information such as multimedia image content and UI interface. The communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing data communication between the browsing servers. The service module is a module for providing various services and various application programs.

Meanwhile, the memory 290 is also used to store visual effect maps and the like for receiving external data and user data, images of respective items in various user interfaces, and a focus object.

A user input interface 260-3 for transmitting an input signal of a user to the first controller 210 or transmitting a signal output from the first controller 210 to the user. For example, the control device (e.g., a mobile terminal or a remote controller) may transmit an input signal, 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 the input signal is forwarded to the first controller 210 through the user input interface 260-3; alternatively, the control device may receive an output signal such as audio, video or data processed by the first controller 210 and output from the user input interface 260-3, and display or output the received output signal in audio or vibration form.

In some embodiments, the user may input a user command on 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 a user command by inputting a specific sound or gesture, and the user input interface 260-3 receives the user input command by recognizing the sound or gesture through the sensor.

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 synthesis according to a standard codec protocol of the input signal, so as to obtain a video signal that is directly displayed or played on the first display screen 280.

Illustratively, the video processor 260-1 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like (not shown in the figure).

The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal and an audio signal.

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

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

The frame rate conversion module is configured to convert a frame rate of an input video, such as a 24Hz, 25Hz, 30Hz, or 60Hz video, into a 60Hz, 120Hz, or 240Hz frame rate, 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 the display device. And a display formatting module for converting the signal output by the frame rate conversion module into a signal conforming to a display format of the display device, such as converting the format of the signal output by the frame rate conversion module to output RGB data signals.

A display screen 280 for receiving the image signal from the input of the video processor 260-1. It will be appreciated that in one particular implementation of FIG. 7, in addition to the display screen 280, it is provided within the host of the display device; 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 includes a display screen component for presenting pictures and a driving component for driving the display of images. The video content may be displayed from the video in the broadcast signal received by the tuner/demodulator 220, or from the video content input from the communicator or the external device interface. The screen 280 is displayed while a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200 is displayed.

And, a driving component for driving the display according to the type of the display screen 280. 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 an audio signal, and perform decompression and decoding according to a standard codec protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played in the speaker 272.

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

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

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

The power supply module 240 is configured to provide power supply support for the display apparatus 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 supply circuit installed inside the display apparatus 200, or may be a power supply installed outside the display apparatus 200, such as a power supply interface for providing an external power supply in the display apparatus 200.

The detector 340 is a component of the display device a chip for collecting signals of an external environment or interacting with the outside. The detector 340 may include a light receiver 342, a sensor for collecting the intensity of ambient light, which may be used to adapt to display parameter changes, etc.; the system may further include an image collector 341, such as a camera, a video camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or interact gestures with the user, adaptively change display parameters, and identify user gestures, so as to implement a function of interaction with the user.

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

A video processor 360 for processing the associated video signal.

It will be appreciated by those skilled in the art that the arrangements shown in the figures are not intended to be limiting of the display device 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.

Fig. 7 is a diagram schematically illustrating a functional configuration of a display device according to an exemplary embodiment. As shown in fig. 7, the memory 290 is specifically used for storing an operating program for driving the first controller 210 in the display apparatus 200, and storing various applications built in the display apparatus 280, various applications downloaded by a user from an external device, various graphical user interfaces related to the applications, various objects related to the graphical user interfaces, user data information, and internal data of various supported applications. 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, and 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 tuner demodulator 220, the input/output interface, and the like.

In some embodiments, memory 290 may store software and/or programs, software programs for representing 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 (e.g., the middleware, APIs, or applications), and the kernel may provide interfaces to allow the middleware and APIs, or applications, to access the controller to implement controlling or managing system resources.

The memory 290, for example, 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 so forth. The first controller 210 performs operations such as: the system comprises a broadcast television signal receiving and demodulating function, a television channel selection control function, a volume selection control function, an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

The memory 390 includes a memory storing various software modules for driving and controlling the display apparatus 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, and various service modules, etc. (not shown in the figure). Since the functions of the memory 390 and the memory 290 are similar, reference may be made to the memory 290 for relevant points, and thus, detailed description thereof is omitted here.

Illustratively, 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 performs operations such as: the system comprises an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

Illustratively, since the image receiving device such as a camera is connected with the controller, the external instruction recognition module 3907 of the controller may include the pattern recognition module 2907-1, a pattern database is stored in the pattern recognition module 3907-1, and when the camera receives an external pattern instruction, the camera corresponds to the pattern instruction in the pattern database to perform instruction control on the display device. Since the voice receiving device and the remote controller are connected to the controller, the external command recognition module 2907 of the controller may include a voice recognition module 2907-2, a voice database is stored in the voice recognition module 2907-2, and when the voice receiving device receives an external voice command or the like, the voice receiving device corresponds to the command in the voice database to perform command control on the display device. Similarly, a control device 100 such as a remote controller is connected to the controller, and the button command recognition module 2907-3 performs command interaction with the control device 100.

Fig. 1 to 7 show schematic structural diagrams of a display device provided in the present application, where the display device is merely an exemplary illustration, and the display device provided in the present application may be the display device described in fig. 1 to 7, or may be another display device, and is not limited.

To split type display screen and host computer, need connect through external connecting wire, in order to improve the security, kneck forceful electric power is inaccessible when not inserting the connecting wire promptly, sets up at the kneck and shelters from the apron among the correlation technique, and this structure is comparatively complicated, still has the potential safety hazard in addition. Therefore, in order to save a redundant structure for shielding the cover plate and improve the safety, the power supply is controlled by the circuit structure to supply power to the display screen, for example, when the connecting wire is disconnected with the host and/or the display screen, the power supply is controlled by the circuit structure to stop outputting high voltage, namely, when the hardware circuit structure detects that at least one connecting wire in the host and the display screen is pulled out, the power supply is forcibly controlled to stop outputting high voltage, and further, the power supply can discharge within a preset time so as to reach a safety standard; when the connecting line is connected with the host and the display screen, the power supply is controlled by the circuit structure to supply power to the display screen.

The following describes a specific implementation of the display device provided in the present application with reference to the accompanying drawings.

Fig. 8 is a schematic structural diagram of an embodiment of a display device provided in the present application, and the display device shown in fig. 8 may be the display device shown in any one of fig. 1 to 7, or may also be another display device not shown in fig. 1 to 7. Specifically, the display device provided by the present embodiment includes: the display device includes a main body 10 and a display screen 20, wherein the main body 10 and the display screen 20 are independently provided from each other, and a display device having a split type display screen is implemented. The host 10 at least comprises a power panel 101 and a main board 102, wherein the power panel 101 is connected with the main board 102, and the main board 102 of the host 10 is connected with the display screen 20 through a connecting wire 30.

The main board 102 in the host 10 may obtain a signal of a picture to be displayed on the display screen 20, and send the signal to the display screen 20 through the connection line 30, so as to be displayed by the display structure of the display screen 20. The transmission mode of the signal in the connection line 30 is not limited in the present application, and the display screen 20 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 (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 corresponding picture on the Display structure and implement a Display function together with the backlight illumination of the Display screen.

Meanwhile, the main board 102 of the host 10 provided in this embodiment may also supply power to the display screen 20 through the connection line 30, and the power supply to the display screen 20 includes but is not limited to supplying power to a backlight module for implementing backlight in the display screen 20. The main board 102 is used to supply power to the backlight module of the display screen 20 for exemplary illustration. Specifically, after receiving the power input of the commercial power ac with the specification of 100-240V and 50-60Hz through the power board 101, the host 10 may convert the ac into the dc of, for example, 90V required by the backlight module in the display screen 20, and transmit the dc of 90V to the display screen 20 through the main board 102 and the connection line 30, so as to supply power to the backlight module in the display screen 20.

In an embodiment, the main board 102 may be used to provide an interface for connecting the host 10 and the connection line 30, and after the power board 101 generates the dc power for supplying power to the display screen 20, the dc power may be transmitted to the interface of the main board 102, then transmitted to the connection line 30 through the interface, and finally transmitted to the display screen 2 through the connection line 30.

In particular, the connection lines for the main board 102 to transmit signals of pictures to be displayed to the display screen 20 and the connection lines for the main board 102 to supply power to the display screen 20 may be different connection lines integrated in the connection lines 30 as shown in fig. 8. 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 when embodied. That is, the connection line 30 shown in fig. 8 may be understood as a set including a plurality of connection lines, which may be of various specifications, capable of transmitting different signals.

In one embodiment, the power board is used for controlling power supply to the display screen according to level change of a connecting pin of the mainboard and the power board.

The connecting wire is inserted into the host and the display screen or is disconnected with the host and/or the display screen, the level of a connecting pin of the main board and the power panel in the host can be influenced, and if the power panel detects that the level of the connecting pin changes, power is controlled to be supplied to the display screen according to the level change condition.

Specifically, when at least one connecting wire of the host and the display screen is pulled out, the power supply is forcibly controlled to stop outputting high voltage, namely, stopping supplying power to the display screen, and after the connecting wire is detected to be respectively inserted into the host and the display screen, the power supply is controlled to output strong current, namely, supplying power to the display screen.

According to the display device, the level change of the connecting pins of the mainboard and the power panel can be influenced by the connecting condition of the connecting wire and the mainboard and the display screen of the host, the power panel controls power supply to the display screen according to the level change of the connecting pins, and the safety of a connecting wire interface is improved. In an embodiment, as shown in fig. 9, the power board includes a control circuit, a first end of the control circuit is connected to a first pin Ft included in the connection pin, the first pin Ft is connected to a power VCC through the motherboard, and a second end VCC2 of the control circuit is used for supplying power to the display screen;

the power panel is used for controlling the second end of the control circuit to stop supplying power to the display screen according to the level of the first pin when the connecting wire is disconnected with the main board and/or the display screen of the host.

When the connecting line at least one end of the host computer and the display screen is pulled out, the level of the first pin changes, for example, from low level to high level, and the power panel can stop supplying power to the display screen when the connecting line at least one end of the host computer and the display screen is pulled out, namely, the power supply is automatically cut off.

In one embodiment, when the connection line is connected with the main board of the host and the display screen, the power board controls the second terminal of the control circuit to supply power to the display screen according to the level of the first pin.

When the connecting line is connected with the main board and the display screen of the host, the level of the first pin changes, for example, from high level to low level.

In one embodiment, a signal amplifying circuit is disposed between the resistor and the first pin Ft.

In the above embodiment, the power panel controls power supply to the display screen according to the level change of the first pin, and once the connecting line is abnormal, the level of the first pin changes, which can inform the power supply to stop outputting, and the response is rapid.

In one embodiment, as shown in fig. 9, the connection line 30 includes: a first feedback line HPD, a supply line;

when the connection line is connected with the main board of the host and the display screen, the first end of the first feedback line HPD is connected with the first pin, and the second end of the first feedback line is grounded through the first resistor R1 of the display screen 2; the power supply line is used for transmitting electric energy to the display screen.

The first feedback line HPD may be used for detecting insertion of a connection line, and in an embodiment, when the connection line connects the motherboard of the host and the display screen, the first feedback line HPD is pulled low, and the first pin is at a low level, which represents that the connection line is respectively inserted into the host and the display screen; when the connecting wire is not inserted into the host and the display screen, the first pin is at a high level; when the connecting line is only inserted into the host and is not inserted into the display screen, the first feedback line HPD is at a high level, the first pin is at a high level, and when the connecting line is not inserted into the host and is only inserted into the display screen, the first pin is also at a high level; i.e. the first pin is high, indicating that no connection line is inserted.

In an embodiment, in order to prevent the occurrence of misjudgment caused by a short circuit or the like, in this embodiment, a second pin is added, and the main board controls the level of the second pin according to the connection condition with the display screen and the feedback state of the display screen, so that the power board controls power supply to the display screen according to the level change of the first pin and the second pin, as shown in fig. 9, a third end of the control circuit is connected with a second pin bl-sw included in the connection pin, and when the connection line is connected with the main board of the host and the display screen, the main board is used for controlling the level of the second pin according to a feedback signal sent by the display screen; the feedback signal is used for representing the state of the display screen; the power panel is used for controlling the second end of the control circuit to supply power to the display screen according to the level of the first pin and the level of the second pin.

Specifically, the second pin bl-sw is a high-voltage output control pin and is used for controlling voltage output of the main board to the power panel, the main board controls the level of the second pin according to the connection state of the connecting line and the main board and the display screen and the feedback signal of the display screen, and the power panel controls whether to supply power to the display screen according to the level of the first pin and the level of the second pin.

For example, when the motherboard of the host detects that the connection line is plugged into the host and the display screen, i.e., the HPD pin is pulled low, the first pin Ft is at a low level, for example. The feedback signal fed back by the display screen shows that the screen end is in a normal state, for example, a high level signal is fed back, the mainboard of the host controls the second pin to be enabled, for example, the second pin is in a high level, and then the power panel supplies power to the display screen through the control circuit according to the levels of the first pin and the second pin.

When the motherboard (e.g. SOC of the motherboard) of the host detects that the connection line is plugged into the host and the display screen, i.e. the HPD pin is pulled low, the first pin Ft is at a low level, for example. However, the display screen does not feed back a feedback signal (which indicates that the display screen mainboard does not work normally) or the feedback signal indicates that the state of the display screen is abnormal, the mainboard of the host machine judges that the display screen is in the abnormal state, the second pin bl-sw is not enabled, no high-voltage output exists, and no power is supplied to the display screen.

When the main board of the host computer detects that the connecting wire is not inserted into the host computer and/or the display screen, the HPD pin is at a high level, the main board of the host computer does not enable the second pin bl-sw, and does not output high voltage, namely, does not supply power to the display screen.

In an embodiment, the connection line 3 further comprises a second feedback line hotplug for receiving a feedback signal of the display screen.

In an embodiment, the second feedback line may multiplex the hot plug pin of the HDMI included in the connection line.

In the above specific embodiment, the power board adopts the first pin Ft and the second pin bl-sw to control power supply to the display screen at the same time, and the level change of any pin affects power supply to the display screen. The power supply to the display screen can be controlled to stop according to the level change of the first pin, so that the response is rapid; the second pin bl-sw can be used for sequential control and can determine whether to output high voltage or not by judging the state of the screen end mainboard, so that misjudgment is prevented, and high-voltage protection is realized without increasing cost.

In an embodiment, the connection condition of the display screen may be fed back to the motherboard of the host in several ways, one implementation way is:

the display screen comprises a System On Chip (SOC), and when the connecting line is connected with the mainboard of the host and the display screen, the second feedback line is respectively connected with the mainboard of the host and the SOC of the display screen.

Specifically, the second feedback line is respectively connected with the main board of the host and the SOC of the display screen, and the SOC of the display screen sends a feedback signal to the main board of the host through the second feedback line for the main board to control the level of the second pin.

For example, when the motherboard of the host detects that the connection line is plugged into the host and the display screen, i.e., the HPD pin is pulled low, the first pin Ft is enabled, e.g., at a low level. The feedback signal fed back by the SOC of the display screen indicates that the state of the screen end is normal, for example, a high level signal is fed back, the enabling of the second pin is controlled, for example, the second pin is at a high level, and then the power panel supplies power to the display screen through the control circuit according to the levels of the first pin and the second pin.

When the main board of the host detects that the connection line is plugged into the host and the display screen, i.e. the HPD pin is pulled low, the first pin Ft is enabled, e.g. at a low level. However, the second feedback line hot plug pin does not feed back a high level (which indicates that the display screen mainboard does not work normally) or a feedback signal indicates that the state of the display screen is abnormal, the mainboard of the host machine judges that the state is abnormal, the second pin bl-sw is not enabled, no high-voltage output exists, and no power is supplied to the display screen.

When the main board of the host computer detects that the connecting wire is not inserted into the host computer and/or the display screen, the HPD pin is at a high level, the second feedback wire does not feed back a feedback signal, the main board of the host computer does not enable the second pin bl-sw, and does not output high voltage, namely, does not supply power to the display screen.

The other realization mode is as follows:

the display screen comprises a Micro Control Unit (MCU), and when the connecting wire is connected with the mainboard of the host and the display screen, the second feedback wire is respectively connected with the mainboard of the host and the MCU of the display screen.

Specifically, the second feedback line is connected to the main board of the host and the MCU of the display screen, in an embodiment, the second feedback line may multiplex the pins of I2C included in the connection line, and the MCU of the display screen sends a feedback signal to the main board of the host through the second feedback line, so that the main board controls the level of the second pin.

For example, when the motherboard of the host detects that the connection line is plugged into the host and the display screen, i.e., the HPD pin is pulled low, the first pin Ft is enabled, e.g., at a low level. And then the main board of the host computer reads a feedback signal fed back by the MCU at the screen end through I2C, and if the feedback signal indicates that the state of the screen end is normal, the main board of the host computer controls the enabling of the second pin bl-sw and high-voltage output.

When the HPD pin is high, the connecting wire is not inserted into the host and the display screen, the main board of the host does not enable the second pin bl-sw, no high-voltage output exists, and no power is supplied to the display screen; when the HPD is low (i.e., the first pin Ft is enabled by hardware), but the MCU does not send a feedback signal through the I2C, or the feedback signal indicates that the motherboard at the screen end does not operate normally, the motherboard of the host determines that the motherboard is in an abnormal state, the second pin bl-sw is not enabled, no high voltage is output, and no power is supplied to the display screen.

In one embodiment, as shown in fig. 10, the control circuit includes: the circuit comprises an optical coupler 1010, a first sub-control circuit, a second sub-control circuit and a third sub-control circuit;

the first end of the first sub-control circuit is connected with a first pin Ft of the mainboard; the second end of the first sub-control circuit is connected with a power supply VCC, and the third end of the first sub-control circuit is connected with the first input end of the optical coupler 1010; the first sub-control circuit is used for controlling the level of the first input end of the optical coupler according to the level of the first pin Ft;

the first end of the second sub-control circuit is connected with a second pin bl-sw of the main board; the second end of the second sub-control circuit is connected to the second input end of the optical coupler 1010; the second sub-control circuit is used for controlling the level of the second input end of the optical coupler 1010 according to the level of the second pin bl-sw;

the first terminal of the third sub-control is connected to the output terminal of the optical coupler 1010, the second terminal VCC2 of the third sub-control circuit is used for supplying power to the display screen, the third terminal of the third sub-control circuit is connected to the power source VCC1, and the third sub-control circuit is used for controlling the second terminal of the third sub-control circuit to supply power to the display screen through the output level of the optical coupler 1010.

Specifically, the first sub-control circuit controls the level of the first input end of the optical coupler according to the level of the first pin Ft, and the second sub-control circuit controls the level of the second input end of the optical coupler according to the level of the second pin bl-sw, so as to control the level of the output end of the optical coupler 1010 through the levels of the first input end and the second input end of the optical coupler, thereby controlling whether to supply power to the display screen.

If the connecting line is connected with the host and the display screen, and the state of the display screen fed back by the feedback signal is normal, the first pin Ft and the second pin bl-sw are enabled simultaneously, the optical coupler is conducted, and an electric signal is output, so that the third sub-control circuit controls the power supply to supply power to the display screen.

In one embodiment, as shown in fig. 11, the third sub-control circuit includes: a first end 1 of the first triode Q1, a first end 1 of the first triode Q1 is connected to the first output end of the optical coupler 1010, a second end 2 of the first triode Q1 is used as the second end of the third sub-control circuit, a third end 3 of the first triode Q1 is connected to a power source VCC1, and the power source VCC1 is further connected to the second output end of the optical coupler 1010.

Specifically, the optocoupler is turned on to output an electrical signal, so that the first triode Q1 is turned on, and the power supply VCC1 outputs a voltage to supply power to the display screen. If the optocoupler is not conducting, the first triode Q1 is not conducting, and the power VCC1 stops supplying power to the display screen.

In one embodiment, as shown in fig. 11, the first sub-control circuit includes: a second triode Q2 and a first filter circuit;

a first terminal 1 of the second transistor Q2 is connected to the first terminal of the first filter circuit, and a second terminal 2 of the second transistor Q2 is connected to the second terminal of the first filter circuit and grounded; the third end 3 of the second triode Q2 is connected with a power supply VCC through a resistor and is connected with the first input end of the optical coupler 1010; the third end of the first filter circuit is connected with the first pin Ft.

In one embodiment, as shown in fig. 11, the second sub-control circuit includes: a third triode Q3 and a second filter circuit;

a first end 1 of the third triode Q3 is connected with a first end of the second filter circuit, and a second end of the third triode Q3 is connected with a second end of the second filter circuit and grounded; the third end of the third triode Q3 is connected to the second input end of the optical coupler 1010; and the third end of the second filter circuit is connected with the second pin bl-sw.

Specifically, the first pin Ft and the second pin bl-sw are enabled simultaneously, for example, if the first pin Ft is at a low level, the second transistor Q2 is not turned on, the first input end of the optical coupler 1010 is at a high level, the second pin bl-sw is at a high level, the third transistor Q3 is turned on, the second input end of the optical coupler 1010 is grounded, the optical coupler is turned on, and an electrical signal is output, so that the third sub-control circuit controls the power supply to supply power to the display screen.

For example, when the connection line is disconnected from the host and/or the display screen, the first pin Ft is at a high level, the second transistor Q2 is not turned on, the first input terminal of the optical coupler 1010 is at a high level, the second pin bl-sw is at a low level, the third transistor Q3 is not turned on, and the optical coupler is not turned on, so that the power supply stops supplying power to the display screen.

As shown in fig. 12, the third sub-control circuit further includes a zener diode D1, a first terminal of the zener diode D1 is connected to the first terminal 1 of the first transistor Q1, and a second terminal of the zener diode D1 is grounded. Further, a filter circuit formed by a resistor and a capacitor is further disposed in the third sub-control circuit, and the first input terminal of the optical coupler 1010 is connected to the second terminal of the third triode through the capacitor.

In one embodiment, in order to perform rapid discharging after stopping supplying power to the display screen, and achieve the safety standard, for example, the voltage can be reduced to equal to or less than 60V within 2s, as shown in fig. 13, the power board further includes a discharging circuit for discharging when the connection line is disconnected from the main board of the host and/or the display screen.

In one embodiment, as shown in fig. 14, the second terminal VCC2 of the control circuit is further connected to a voltage conversion circuit for voltage conversion, and optionally, the voltage conversion circuit includes a switching transformer and a rectifier.

As shown in fig. 15, the discharge circuit includes: a first load R10 connected to a second terminal of the control circuit.

The first load is for example one or more resistors connected in series and/or in parallel.

Fig. 16 shows another discharge circuit, in which, to further increase the discharge speed and solve the problem of heat loss in the load, we can modify the discharge circuit, as shown in fig. 16, the discharge circuit includes: the first end of the switch tube is connected with the first pin, the second end of the switch tube is grounded, the third end of the switch tube is connected with the first end of the second load, and the second end of the second load is connected with the second end of the control circuit. At this time, when the display device is in normal operation, i.e., when the connection line is connected to the main board of the host and the display screen (the host normally supplies power to the display screen), the signal of the first pin Ft is at a low level, so that the second load R20 does not operate, and no energy is consumed. When the connection line is disconnected, the first pin Ft is at a high level, the switching tube Q4 is turned on, and the load works and discharges rapidly. Wherein the diode can play a role in protection. The resistor and capacitor on the left side of the switching tube Q4 may act as a filter.

The following describes the implementation flow of inserting and pulling out the connection line by taking the SOC of the second feedback line respectively connecting the main board of the host and the display screen as an example:

as shown in fig. 17, the main board of the host detects whether the connection line is normally inserted into the host and the display screen, that is, detects the level of the HPD pin, and if the connection line is inserted into the host and the display screen (hardware automatically pulls the first pin Ft low), further determines whether the second feedback line hot plug has a feedback signal, or whether the feedback signal feeds back the screen end state normally, for example, the feedback signal is high (indicating that the screen end state is normal), the host of the host controls the level of the second pin bl-sw, for example, high, in an embodiment, the main board of the host may delay a preset time to control the level of the second pin bl-sw, for example, the preset time is 500ms, at this time, the power supply line of the connection line outputs high voltage to supply power to the display screen, and the main board of the host notifies the MCU at the screen end to light up backlight through I2C.

If the connecting wire is not inserted into the host and/or the display screen, the HPD is pulled high, the hardware automatically pulls the first pin Ft high, the optical coupler of the power panel is not conducted, the second end VCC2 of the control circuit stops outputting voltage, the residual electricity is rapidly discharged through the ground resistor, and the mainboard of the host can pull the second pin bl-sw low, namely, misjudgment is prevented.

In an embodiment, the first pin Ft is pulled low by the hardware automatically because the HPD pin is short-circuited or the first resistor is open-circuited to cause the HPD pin to be at a low level (at this time, the HI-LINK line is not inserted), and the main board SOC of the host detects that no feedback signal is present, for example, the second feedback line hotplug pin is at a low level, the second pin bl-sw is continuously controlled to be at a low level, at this time, the optical coupler of the power board cannot be turned on, and the power supply does not output a strong current and does not supply power to the display screen.

In the embodiment of the application, a software and hardware combined design mode is adopted, so that quick discharge and no strong current output are realized when a strong current terminal is disconnected, the purpose of double protection is achieved, the safety standard is met, and a general structure is replaced to be a shielding cover plate to realize the mode that strong current cannot be touched. According to the scheme, redundant shielding cover plates do not need to be made through the structure, so that the product is more attractive on the basis of meeting the product specification requirement, and the safety is higher; when the hardware detects that the connecting line is disconnected with at least one end of the host and the display screen, the hardware can forcibly control the power supply to stop outputting high voltage and discharge within a specified time; and the strong current output is controlled in a closed loop mode of detecting the feedback state of the mainboard at the screen end by software under the condition of not increasing the cost, namely, the strong current is output only when the screen end is ready (the HI-LINK line is inserted), so that the strong current output caused by the short circuit of a hardware detection pin or other false triggering is avoided.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

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, comprising:

2. The apparatus of claim 1,

the power panel comprises a control circuit, a first end of the control circuit is connected with a first pin included by the connecting pin, the first pin is connected with a power supply through the mainboard, and a second end of the control circuit is used for supplying power to the display screen;

the power panel is used for controlling the second end of the control circuit to stop supplying power to the display screen according to the level of the first pin when the connecting line is disconnected with the main board of the host and/or the display screen.

3. The apparatus of claim 2,

the third end of the control circuit is connected with a second pin included by the connecting pin, and when the connecting wire is connected with a mainboard of the host and the display screen, the mainboard is used for controlling the level of the second pin according to a feedback signal sent by the display screen; the feedback signal is used for representing the state of the display screen; the power panel is used for controlling the second end of the control circuit to supply power to the display screen according to the level of the first pin and the level of the second pin.

4. The apparatus of claim 3,

the connecting wire includes: a first feedback line, a supply line and a second feedback line;

when the connecting line is connected with a main board of the host and a display screen, the first end of the first feedback line is connected with the first pin, and the second end of the first feedback line is grounded through a first resistor of the display screen;

the power supply line is used for transmitting electric energy to the display screen, and the second feedback line is used for receiving a feedback signal of the display screen.

5. The apparatus of claim 4,

6. The apparatus of claim 4,

7. The apparatus of any of claims 3-5, wherein the control circuit comprises: the first sub-control circuit comprises an optical coupler, a first sub-control circuit, a second sub-control circuit and a third sub-control circuit;

the first end of the first sub-control circuit is connected with a first pin of the mainboard; the second end of the first sub-control circuit is connected with a power supply, and the third end of the first sub-control circuit is connected with the first input end of the optical coupler; the first sub-control circuit is used for controlling the level of the first input end of the optical coupler according to the level of the first pin;

the first end of the second sub-control circuit is connected with a second pin of the mainboard; the second end of the second sub-control circuit is connected with the second input end of the optical coupler; the second sub-control circuit is used for controlling the level of the second input end of the optical coupler according to the level of the second pin;

the first end of the third sub-control circuit is connected with the output end of the optical coupler, the second end of the third sub-control circuit is used for supplying power to the display screen, the third end of the third sub-control circuit is connected with a power supply, and the third sub-control circuit is used for controlling the second end of the third sub-control circuit to supply power to the display screen through the output level of the optical coupler.

8. The apparatus of claim 7, wherein the third sub-control circuit comprises: the first end of the first triode is connected with the first output end of the optical coupler, the second end of the first triode is used as the second end of the third sub-control circuit, the third end of the first triode is connected with the power supply, and the second output end of the optical coupler is connected with the power supply.

9. The apparatus of claim 7, wherein the first sub-control circuit comprises: the second triode and the first filter circuit;

the first end of the second triode is connected with the first end of the first filter circuit, and the second end of the second triode is connected with the second end of the first filter circuit and grounded; the third end of the second triode is connected with a power supply through a resistor and is connected with the first input end of the optical coupler; and the third end of the first filter circuit is connected with the first pin.

10. The apparatus of claim 7, wherein the second sub-control circuit comprises: a third triode and a second filter circuit;

the first end of the third triode is connected with the first end of the second filter circuit, and the second end of the third triode is connected with the second end of the second filter circuit and grounded; the third end of the third triode is connected with the second input end of the optical coupler; and the third end of the second filter circuit is connected with the second pin.

11. The apparatus of any of claims 2-5, wherein the power strip further comprises: the discharging circuit is used for discharging when the connecting line is disconnected with the main board of the host and/or the display screen;

the discharge circuit includes: a first load connected to a second terminal of the control circuit, or,

the discharge circuit includes: the first end of the switch tube is connected with the first pin, the second end of the switch tube is grounded, the third end of the switch tube is connected with the first end of the second load, and the second end of the second load is connected with the second end of the control circuit.