Display device

Abstract

Embodiments of the present application provide a display device, comprising a host, a cable and a display screen designed separately from the host, wherein the host and the display screen are connected through the cable, the host comprises a first conversion module and a power supply module, the display screen comprises a second conversion module, a backlight module and a display panel, the cable comprises a first wire and a second wire; the first conversion module is used for converting multimedia data accessed in the host from an electrical signal to an optical signal, and transmitting the optical signal to the second conversion module through the first wire; the second conversion module is used for converting the received optical signal into an electrical signal and sending it to the display panel for display; the power supply module comprises a high-voltage power supply port, which is connected with the backlight module through the second wire, and supplies power to the backlight module when a reliable connection between the host and the display screen is established and the signal transmission is normal, thereby solving the technical problem that the split display device in the prior art is difficult to realize super-high resolution data transmission.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display devices, and in particular to a display device. BACKGROUND

[0002] With the progress of science and technology, ultra-high resolution display screens have been widely used in the field of television, for example, televisions with a resolution of 8K have begun to be favored by more and more consumers.

[0003] The emergence of split televisions solves the problem that the traditional integrated television is heavy in the user's intuitive feeling, and has poor heat dissipation and is inconvenient to install. The design of the existing split television generally separates the display part and the signal processing part of the television, and connects them together through a metal cable.

[0004] Since the higher the resolution, the greater the power of the television and the amount of data required to be transmitted, and the existing split television is limited by the data transmission method and cannot realize ultra-high resolution data transmission, therefore, how to realize an ultra-high resolution split television is currently in urgent need of solving. SUMMARY

[0005] Embodiments of the present application provide a display device, which can solve the technical problem that the existing split display device cannot realize ultra-high resolution data transmission.

[0006] In some embodiments, the present application provides a display device, which includes a host, a cable and a display screen designed separately from the host, the host and the display screen are connected through the cable, the host includes a first conversion module and a power supply module, the display screen includes a second conversion module, a backlight module and a display panel, and the cable includes a first wire and a second wire;

[0007] The first conversion module is configured to convert multimedia data accessed in the host from an electrical signal to an optical signal, and transmit the optical signal to the second conversion module through the first wire, and the second conversion module is configured to convert the received optical signal into an electrical signal, and send the converted electrical signal to the display panel for display.

[0008] The power supply module includes a high-voltage power supply port, the high-voltage power supply port is connected with the backlight module through the second wire, and the power supply module is configured to supply power to the backlight module when a reliable connection between the host and the display screen is established and the signal transmission is normal, wherein the voltage provided by the high-voltage power supply port is greater than 220V.

[0009] In some embodiments, the power supply module includes a first detection circuit and a second detection circuit.

[0010] The first detection circuit is configured to detect whether a voltage value that the second wire can withstand is greater than or equal to a voltage provided by the high-voltage power port, and the second detection circuit is configured to detect whether a connection between the host and the display screen has been established through the cable.

[0011] The power supply module is configured to determine that a reliable connection between the host and the display screen has been established when it is determined that the voltage value that the second wire can withstand is greater than or equal to the voltage provided by the high-voltage power port, and that the connection between the host and the display screen has been established through the cable.

[0012] In some embodiments, the display screen further includes a mainboard, and the power supply module further includes a third detection circuit connected to the mainboard, and the host is configured to:

[0013] start the mainboard to work when the multimedia data is accessed;

[0014] The third detection circuit is configured to:

[0015] detect whether the mainboard is successfully started, and determine that signal transmission between the host and the display screen is normal when it is detected that the mainboard is successfully started.

[0016] In some embodiments, the mainboard includes a SOC chip, and the SOC is connected to the backlight module and the display panel, respectively; and the SOC chip is configured to:

[0017] turn on the display panel after the connection between the host and the display screen is established through the cable;

[0018] convert an electrical signal in the second conversion module into a VB1 signal and output the VB1 signal to the display panel;

[0019] turn on the backlight module.

[0020] In some embodiments, the SOC chip is further configured to:

[0021] receive a backlight adjustment instruction sent by the host, and adjust brightness of the backlight module according to the received backlight adjustment instruction;

[0022] feed back the adjusted brightness of the backlight module to the host.

[0023] In some embodiments, the SOC is further configured to:

[0024] receive a standby instruction sent by the host, and turn off the backlight module and the display panel according to the standby instruction, and feed back a feedback signal indicating that the display panel is successfully turned off to the host after the display panel is turned off;

[0025] The host is configured to enter a standby state after receiving the feedback signal.

[0026] In some embodiments, the host further comprises a multimedia data source port configured to receive multimedia data transmitted by an external device.

[0027] In some embodiments, the multimedia data comprises high-definition multimedia interface (HDMI) data.

[0028] In some embodiments, a detection circuit and an adjustment circuit are arranged between the host and the display screen.

[0029] The detection circuit is configured to analyze data in a display data channel (DDC) between the host and the display screen, and determine a format of a data signal transmitted by the host to the display screen according to the data in the DDC.

[0030] The adjustment circuit is configured to adjust a signal quality parameter of the data signal transmitted by the host to the display screen according to the format of the data signal transmitted by the host to the display screen.

[0031] In some embodiments, the host comprises a first connection line interface, and the display screen comprises a second connection line interface, the first connection line interface and the second connection line interface are connected through the cable; wherein the first connection line interface and the second connection line interface both support hot plug function.

[0032] The display device provided by the embodiments of the present application transmits multimedia data between the host and the display screen through optical signals, and supplies power to the backlight module through the high-voltage power supply port when it is determined that a reliable connection has been established between the host and the display screen and the signal transmission is normal, which can meet the multimedia data transmission demand and high power demand of the display device with 8K ultra-high resolution on the premise of safety and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments of the present application or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0034] Figure 1 The schematic diagram of the operation scene between the display device and the control device according to the embodiments is exemplarily shown in the figure;

[0035] Figure 2Fig. 1 shows a configuration block diagram of the control device 100 according to an exemplary embodiment;

[0036] Figure 3 Fig. 2 shows a hardware structure diagram of the hardware system in the display device 200 according to an exemplary embodiment;

[0037] Figure 4 Fig. 3 shows a schematic diagram of the interface on the display device;

[0038] Figure 5 Fig. 4 shows a schematic diagram of the connection relationship between the power board and the load;

[0039] Figure 6 Fig. 5 shows a hardware architecture block diagram of the display device 200;

[0040] Figure 7 Fig. 6 shows a structural schematic diagram of a display device according to an embodiment of the present application;

[0041] Figure 8 Fig. 7 shows another structural schematic diagram of a display device according to an embodiment of the present application;

[0042] Figure 9 Fig. 8 shows a circuit structure schematic diagram of a display device according to an embodiment of the present application;

[0043] Figure 10 Fig. 9 shows a power supply control schematic diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. In addition, although the disclosure is introduced according to one or more examples, it should be understood that each aspect of the disclosure can also constitute a complete embodiment.

[0045] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequently described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0046] The terms "first", "second", and the like in the description and in the claims of the present application and above-described drawings are used to distinguish similar or like objects or entities, but do not necessarily imply a specific order or sequence, unless otherwise noted. It will be understood that the terms so used are interchangeable under appropriate circumstances and embodiments illustrated or described herein can be implemented in other than the order shown or described.

[0047] Furthermore, the terms "comprise" and "have", and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a product or apparatus that comprises a list of components does not necessarily comprise only those components, but can include other components not expressly listed or inherent to such product or apparatus.

[0048] The term "module" used in the present application refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or a combination of hardware and / or software code capable of performing a function associated with that element.

[0049] Some current display devices have a split body, such as a split television. The split display device can separate the display screen from the display device main body and set it as a separate structure. That is, the split display device at least includes a host (which can be referred to as a "box" in some specific product implementations) and a display screen connected to the host. The host is used to generate display content, connect a power supply, and the like. The host also powers the display screen and transmits the display content to the display screen for display. With this split structure, the display screen of the display device can be made thinner, and it can also help with heat dissipation and installation of the display device.

[0050] With the progress of science and technology, ultra-high resolution display screens have been widely used in the television field. For example, 8K resolution televisions have begun to be favored by more and more consumers. Compared with 4K resolution or lower resolution split televisions, the power of 8K televisions and the amount of multimedia data required for transmission are relatively large. If copper wires are still used to connect the host and the display screen, the copper wires need to be significantly thickened, which greatly reduces the practicality of the split television.

[0051] To solve the above technical problems, the embodiments of the present application provide a display device. Multimedia data is transmitted between the host and the display screen through optical signals. Meanwhile, when it is determined that a reliable connection has been established between the host and the display screen and the signal transmission is normal, the backlight module is powered through a high-voltage power supply port. The multimedia data transmission requirements of 8K ultra-high resolution of the display device and the high power requirements of the backlight module can be met on the premise of safety and reliability.

[0052] The concepts involved in the present application will be described below in conjunction with the accompanying drawings. It should be noted that the following description of the concepts is only intended to make the content of the present application easier to understand, and does not represent a limitation on the scope of protection of the present application.

[0053] The term "remote controller" used in the embodiments of the present application refers to a component of an electronic device (such as the display device disclosed in the present application), which can generally control the electronic device wirelessly within a short distance range. The component can generally be connected with the electronic device using infrared and / or radio frequency (RF) signals and / or Bluetooth, and can also include WiFi, wireless USB, Bluetooth, motion sensor, etc. For example, a handheld touch remote controller replaces most of the physical built-in hardware in a general remote control device with a user interface in a touch screen.

[0054] The term "gesture" used in the embodiments of the present application refers to a user behavior for expressing intended ideas, actions, purposes, or results through a change in a hand shape or a hand movement, etc.

[0055] The term "hardware system" used in the embodiments of the present application can refer to an entity component with functions of calculation, control, storage, input, and output, which is composed of mechanical, optical, electrical, and magnetic devices such as integrated circuits (ICs) and printed circuit boards (PCBs). In the embodiments of the present application, the hardware system is also generally referred to as a motherboard or a chip.

[0056] Figure 1 The schematic diagram of an operating 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 a display device 200 through a control device 100. Figure 1

[0057] The control device 100 can be a remote controller 100A, which can communicate with the display device 200 through infrared protocol communication, Bluetooth protocol communication, ZigBee protocol communication, or other short-distance communication modes, for controlling the display device 200 through wireless or other wired modes. The user can input user instructions through buttons, voice input, control panel input, etc. on the remote controller 100A, to control the display device 200.

[0058] ​The control device 100 can also be a smart device, such as a mobile terminal 100B, a tablet computer, a computer, a notebook computer, etc., which can 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 control the display device 200 through an application corresponding to the display device 200. For example, the display device 200 is controlled using an application running on the smart device. The application can provide various controls for the user through an intuitive user interface (UI) on a screen associated with the smart device.

[0059] As shown in Figure 1 , the display device 200 can also communicate data with the server 300 through various communication modes. In various embodiments of the present application, the display device 200 can be allowed to be connected to the server 300 through a wired communication connection or a wireless communication connection through a local area network, a wireless local area network, or other networks. The server 300 can provide various content and interactions to the display device 200.

[0060] 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. In some embodiments, the host 202 can be connected to a power supply and transmit a power supply signal to the display screen 201 through the connection line 203, thereby powering the display screen 201. At the same time, the host 202 can also obtain to-be-displayed content from the server 300 and transmit the to-be-displayed content to the display screen 201 in the form of an electrical signal through the connection line 203, so that the display screen 201 displays the received to-be-displayed content.

[0061] The display device 200, on the one hand, can be 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 smart television or a display system composed of a display and a set-top box. The specific display device type, size, resolution, etc. are not limited, and those skilled in the art can understand that the display device 200 can be changed in performance and configuration as needed.

[0062] Figure 2 An exemplary configuration block diagram of the control device 100 according to an exemplary embodiment is shown in the figure. As shown in Figure 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.

[0063] The control device 100 is configured to control the display device 200, receive user input operation instructions, and convert the operation instructions into instructions recognizable and responsive by the display device 200, thereby playing a role of an intermediary between the user and the display device 200. For example, the user operates the channel plus / minus keys on the control device 100, and the display device 200 responds to the channel plus / minus operation.

[0064] In some embodiments, the control device 100 can be a smart device. For example, the control device 100 can install various applications for controlling the display device 200 according to user needs.

[0065] 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 and operation of the control device 100, and the communication and cooperation between the internal components, as well as the external and internal data processing functions.

[0066] The communicator 130, under the control of the controller 110, realizes the communication of control signals and data signals between the display device 200. For example, the received user input signals are sent to the display device 200. The communicator 130 can include at least one of a WIFI module 131, a Bluetooth module 132, an NFC module 133, and the like.

[0067] The user input / output interface 140, wherein the input interface includes at least one of a microphone 141, a touchpad 142, a sensor 143, a key 144, a camera 145, and the like. For example, the user can input user instructions through voice, touch, gesture, pressing, and the like. The input interface converts the received analog signals into digital signals, and the digital signals into corresponding instruction signals, and sends them to the display device 200.

[0068] The output interface includes an interface for sending the received user instructions to the display device 200. In some embodiments, it can be an infrared interface or a radio frequency interface. For example, when it is an infrared signal interface, the user input instructions need to be converted into infrared control signals according to the infrared control protocol, and then sent to the display device 200 by the infrared sending module. For another example, when it is a radio frequency signal interface, the user input instructions need to be converted into digital signals, and then modulated according to the radio frequency control signal modulation protocol, and then sent to the display device 200 by the radio frequency sending terminal.

[0069] The storage 190 is used to store various running programs, data and applications for driving and controlling the control device 100 under the control of the controller 110. The storage 190 can store various control signal instructions input by the user.

[0070] The power supply 180 is configured to provide operating power for the various electrical components of the control device 100 under the control of the controller 110. The power supply 180 can be implemented by a battery and associated control circuitry.

[0071] Figure 3 Fig. 1 schematically shows a hardware structure of a hardware system in the display device 200 according to an exemplary embodiment. For ease of illustration, Figure 3 In some embodiments, the display device 200 can be implemented by using a liquid crystal display panel.

[0072] Figure 3 As shown in Fig. 1, the display device 200 includes a panel 1, a backlight assembly 2, a mainboard 3, a power board 4, a rear shell 5, and a base 6. The panel 1 is configured to present an image to a user. The backlight assembly 2 is located below the panel 1 and typically includes optical components configured to supply sufficient and uniformly distributed light source so that the panel 1 can normally display an image. The backlight assembly 2 further includes a back plate 20. The mainboard 3 and the power board 4 are disposed on the back plate 20. Typically, the back plate 20 is punched to form a plurality of convex structures. The mainboard 3 and the power board 4 are fixed to the convex structures by screws or hooks. The rear shell 5 is disposed on the panel 1 to hide the components of the display device such as the backlight assembly 2, the mainboard 3, and the power board 4, and to achieve an aesthetic effect. The base 6 is configured to support the display device.

[0073] In some embodiments, the display device 200 can not include the rear shell 5.

[0074] In some embodiments, the display screen is connected to a host (a TV box) of the display device 200 through a HI-LINK data line. The host is further connected to a power adapter through an AC data line. Therefore, Fig. 4 schematically shows an interface of the display device. The display device can be provided with a HI-LINK interface for connecting the HI-LINK data line. In addition, the display device can be provided with a TYPE-C interface.

[0075] In some embodiments, the display screen of the display device can also include a mainboard and a power board. The mainboard of the host is configured to generate display content and transmit the display content to the mainboard of the display screen through the HI-LINK data line, so that the display device displays the display content. The power board in the host is configured to transmit electric energy to the mainboard of the display screen, so as to supply power to the display screen. In this case, the display screen can not include a power board, but only receive the electric energy provided by the power board of the host.

[0076] In addition, the display device 200 further comprises a sound reproducing device (not shown in the figure) such as a sound assembly, for example, an I2S interface comprising an amplifier (AMP) and a speaker, etc., for realizing the reproduction of sound. Generally, the sound assembly can realize the sound output of at least two sound channels; when the effect of panorama sound surround is to be realized, a plurality of sound assemblies need to be arranged to output a plurality of sound channels, which will not be described in detail here.

[0077] It should be noted that the display device of the display device 200 can also adopt an OLED display screen, so that the template contained in the display device 200 changes accordingly, which will not be described in detail here.

[0078] Figure 5 An exemplary schematic diagram of the connection relationship between the power board and the load is shown in FIG. 3. Figure 5 As shown in FIG. 4, a possible connection relationship between the power board and the load in a display device is shown. In the display device, the power board 4 of the host computer comprises an input end IN and an output end OUT (a first output end OUT1, a second output end OUT2, a third output end OUT3 and a fourth output end OUT4 are shown in the figure), wherein the input end IN is connected with the commercial power, and the output end OUT is connected with the load, for example, the first output end OUT1 is connected with the sound assembly, the second output end OUT2 is connected with the main board, and the third output end OUT3 is connected with the first display driving board 33. In addition, the fourth output end OUT4 is connected with the display screen, and the host computer of the display device transmits the power through the HI-LINK connection line to the display screen, for example, to the main board of the display screen, to supply power for the display screen. The power board 4 needs to convert the alternating commercial power into direct current required by the load and the display screen, and the direct current generally has different specifications, for example, the sound assembly requires 18V, and the main board 31 requires 12V / 18V, etc.

[0079] The system architecture of the display device of the present application will be further described below. Figure 6 It should be noted that Figure 6 is only an exemplary description and does not represent a limitation on the present application. In actual applications, more or fewer hardware or interfaces can be included as needed.

[0080] Figure 6 An exemplary hardware architecture block diagram of the display device 200 is shown in FIG. 5. As shown in FIG. 5, the hardware system of the display device 200 comprises a controller, and modules connected with the controller through various interfaces. Figure 6

[0081] In some embodiments, the controller can be arranged on the main board 3 shown in FIG. 3. Figure 3

[0082] ​​In some embodiments, the display device 200 includes at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the input / output interface 255, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, the external device interface 240, and the display screen 201.

[0083] In some embodiments, the external device interface 240 can include, but is not limited to, any one or more of a high-definition multimedia interface (HDMI) interface, an analog or digital high-definition component input interface, a composite video input interface, a USB input interface, an RGB port, and the like. The above-mentioned interfaces can also be combined to form a composite input / output interface.

[0084] In some embodiments, the tuner demodulator 210 is configured to receive broadcast television signals through wired or wireless reception, and can perform modulation and demodulation processing such as amplification, mixing, and resonance to demodulate audio and video signals from a plurality of wireless or wired broadcast television signals. The audio and video signals can include television audio and video signals carried in a user-selected television channel frequency, as well as EPG data signals.

[0085] In some embodiments, the frequency demodulated by the tuner demodulator 210 is controlled by the controller 250, which can send a control signal according to user selection to cause the tuner demodulator to respond to the user-selected television signal frequency and demodulate the television signal carried by the frequency.

[0086] In some embodiments, broadcast television signals can be distinguished according to different television signal broadcast standards, such as terrestrial broadcast signals, cable broadcast signals, satellite broadcast signals, or Internet broadcast signals. Alternatively, they can be distinguished according to different modulation types, such as digital modulation signals and analog modulation signals. Alternatively, they can be distinguished according to different signal types, such as digital signals and analog signals.

[0087] In some embodiments, the controller 250 and the tuner demodulator 210 can be located in different separate devices, i.e., the tuner demodulator 210 can also be in an external device of the main device where the controller 250 is located, such as an external set-top box, etc. In this way, the set-top box outputs the television audio and video signals demodulated from the received broadcast television signals to the main device, and the main device receives the audio and video signals through the first input / output interface.

[0088] The controller 250 includes at least one of a random access memory 251 (RAM), a read-only memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a graphics processing unit (GPU), a central processing unit 254 (CPU), a communication interface, and a communication bus 256. The communication bus connects the various components.

[0089] In some embodiments, upon receiving a power-on signal, the display device 200 power supply starts to boot up, the CPU runs the system boot instructions in the ROM 252, and copies the temporary data of the operating system stored in the memory to the RAM 251, so as to boot up or run the operating system. When the operating system booting is completed, the CPU copies the temporary data of various application programs stored in the memory to the RAM 251, and then, so as to boot up or run various application programs.

[0090] In some embodiments, the CPU processor 254 is configured to execute the operating system and application program instructions stored in the memory, and execute various application programs, data and content according to various interactive instructions received from the external input, so as to finally display and play various audio and video content.

[0091] In some example embodiments, the CPU processor 254 can include a plurality of processors. The plurality of processors can include a main processor and one or more sub-processors. The main processor is configured to perform some operations of the display device 200 in a pre-power-on mode and / or display screen operations in a normal mode. The one or more sub-processors are configured to perform operations in a standby mode and the like.

[0092] In some embodiments, the graphics processor 253 is configured to generate various graphical objects, such as icons, operation menus, and user input instruction display graphics, etc. The graphics processor includes an operator configured to perform operations by receiving various interactive instructions from the user input, and display various objects according to display attributes. The graphics processor also includes a renderer configured to render various objects obtained based on the operator, and the rendered objects are used for display on the display.

[0093] In some embodiments, the video processor 270 is configured to receive external video signals, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, and the like according to the standard encoding and decoding protocol of the input signals, so as to obtain signals that can be directly displayed or played on the display device 200.

[0094] In some embodiments, the video processor 270 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, etc.

[0095] In some embodiments, the audio processor 280 receives external audio signals, and performs decompression and decoding, noise reduction, digital-to-analog conversion, amplification, etc. according to a standard codec protocol of the input signals, to obtain sound signals that can be played on a loudspeaker.

[0096] The power supply 290, under the control of the controller 250, provides power supply support for the display device 200 using power input from an external power source. The power supply 290 can include a built-in power supply circuit installed inside the display device 200, or can be an external power supply installed outside the display device 200, and can provide an external power supply interface in the display device 200.

[0097] The user interface 265 receives user input signals, and then sends the received user input signals to the controller 250. The user input signals can be remote control signals received through an infrared receiver, or various user control signals received through a network communication module.

[0098] In some embodiments, a user inputs a user command through the control device 100 or the mobile terminal 300, and the user input interface displays the user input according to the user input, and the display device 200 responds to the user input through the controller 250.

[0099] The storage 260 includes various software modules for driving the display device 200. For example, the first storage stores various software modules, including at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

[0100] Those skilled in the art can understand that the structures shown in the above figures do not constitute a limitation on the display device, and can include more or fewer components than shown, or combine certain components, or use different component arrangements. The display device provided in the present application can be a display device as described in the Figures 1-6 , or can also be other forms of display devices without limitation.

[0101] The present application provides a display device that can be applied to a split-type display device, and specifically provides a connection method, a signal transmission method, and a control method between a host and a display screen in the display device, to solve the technical problem that it is difficult to implement ultra-high resolution data transmission in the prior art split-type display device.

[0102] Referring to Figure 7 ,Figure 7 A structural schematic diagram of a display device provided by an embodiment of the present application, in some embodiments, the display device comprises a host 10, a display screen 20 and a cable, wherein the display screen 20 is arranged outside the host 10 and is arranged separately from the host 10, that is, the host 10 and the display screen 20 have independent housings respectively. The host 10 and the display screen 20 are connected through the cable, and the cable comprises a first wire and a second wire.

[0103] In some embodiments, the first wire can be an optical fiber, and the second wire can be a metal wire such as a copper wire, which is not limited by the present application.

[0104] In some embodiments, in order to reduce the number of connection lines, the host 10 and the display screen 20 can be connected through an external cable, and the cable comprises transmission lines and interfaces for transmitting different signals. That is, the above display device brings the user an intuitive feeling that the host 10 and the display screen 20 are connected through only one cable, and the cable can be understood as a collection of multiple transmission lines for transmitting different signals, such as transmission lines for transmitting electrical signals, optical signals and control signals.

[0105] The host 10 comprises at least a first conversion module 11 and a power supply module 12, and the display screen 20 comprises a second conversion module 21, a backlight module 22 and a display panel 23. The first conversion module 12 and the second conversion module 21 are connected through the optical fiber in the cable.

[0106] In some embodiments, the host 10 can receive multimedia data signals input by external devices (such as computers, DVDs, set-top boxes, etc.), and transmit the accessed multimedia data signals to the first conversion module 11; the first conversion module 11 is used to convert the multimedia data accessed in the host 10 from electrical signals to optical signals, and transmit the optical signals to the second conversion module 21 through the above optical fiber; the second conversion module 21 is used to convert the received optical signals into electrical signals, and send the converted electrical signals to the display panel 23 for display.

[0107] The power supply module 12 comprises a high-voltage power supply port, which can provide a voltage higher than 220V for the backlight module 22.

[0108] In some embodiments, the above high-voltage power supply port can provide a voltage of 350V, which meets the power consumption demand of the backlight module 700W.

[0109] In addition, the power supply module 12 also includes a low-voltage power supply port (such as providing a 12V voltage), which can be used to power other components besides the backlight module 22, including but not limited to powering the HDM repeater, USB redriver chip, first conversion module 11, second conversion module 21, screen SOC, power amplifier, etc.

[0110] In some embodiments, since the power supply module 12 uses a high-voltage power supply port to supply power to the backlight module 22, the power supply module 12 only supplies power to the backlight module 22 when a reliable connection has been established between the host 10 and the display screen 20 and the signal transmission is normal, thereby improving the safety of the display device.

[0111] The display device provided in this application embodiment transmits multimedia data between the host 10 and the display screen 20 via optical fiber. At the same time, when it is determined that a reliable connection has been established between the host 10 and the display screen 20 and the signal transmission is normal, power is supplied to the backlight module through the high-voltage power supply port. Under the premise of ensuring safety and reliability, the display device's 8K ultra-high resolution multimedia data transmission requirements and the high power requirements of the backlight module can be met.

[0112] Based on the content described in the above embodiments, referring to Figure 8 , Figure 8 This is another structural schematic diagram of a display device provided in an embodiment of this application. For example... Figure 8 As shown, the display device provided in this embodiment includes a SOC 111 and a first connection interface 112 on the motherboard 13 on the host 10 side; the display screen 20 includes a motherboard 24, a backlight module 22, and a display panel 23; the motherboard 24 includes a second connection interface 211, a SOC 212 (also known as a screen SOC), a backlight control circuit 213, a power supply control circuit 214, and a display control circuit 215.

[0113] The first connection interface 112 and the second connection interface 211 each include multiple communication interfaces, each of which can be used to connect to a corresponding transmission line in the cable 30. For example, when the cable 30 is a HI-LINK cable, which includes 36 transmission lines, the first connection interface 112 is provided with 36 communication interfaces corresponding one-to-one with the 36 transmission lines, and the second connection interface 211 is also provided with 36 communication interfaces corresponding one-to-one with the 36 transmission lines. When one end of the cable is connected to the connection interface, the communication interface in the connection interface connects to the corresponding transmission line in the cable.

[0114] The display device provided in this application embodiment can achieve at least one of the following functions:

[0115] I. The host 10 supplies power to the display screen 20 through the cable 30.

[0116] The power supply module 12 in the host 10 receives the power input of the commercial alternating current with the specifications of 100-240V, 50-60Hz, and then converts the alternating current into direct current for the loads in the display screen 20 and transmits the direct current to the display screen 20 through the first connection line interface 112 on the mainboard 13 and the transmission line for transmitting direct current in the cable 30.

[0117] In some embodiments, the direct current with a higher voltage, for example, 350V, required by the backlight module 22 in the display screen 20 is recorded as a first electric signal, and the direct current with a lower voltage, for example, 3V, 3.3V or 5V, required by the SOC 212 and the display panel 23 in the display screen 20 is recorded as a second electric signal. Then, the power supply module 12 converts the alternating current into the first electric signal and the second electric signal after receiving the commercial alternating current, and transmits the first electric signal to the display screen 20 through the first communication interface in the first connection line interface 112 on the mainboard 13 and transmits the second electric signal to the display screen 20 through the second communication interface in the first connection line interface 112 on the mainboard 13.

[0118] The backlight control circuit 213 on the mainboard of the display screen 20 receives the first electric signal through the first communication interface of the second connection line interface 211, and uses the first electric signal to supply power to the backlight module 22; the power supply control circuit 213 in the display screen 20 receives the second electric signal through the second communication interface of the second connection line interface 211, and uses the second electric signal to supply power to the SOC 212 and the display panel 23.

[0119] Referring to Figure 9 , Figure 9 A circuit structure schematic diagram of a display device provided by the embodiments of the present application is shown. In order to facilitate viewing, the circuit diagram is simplified by the same content marked on the arrows of different elements to represent the connection of two arrows.

[0120] As shown in Figure 9 , the backlight control circuit 213 receives the first electric signal and supplies power to the backlight module; "FB" is used for the backlight control circuit (which can also be referred to as a light bar control circuit) to feedback the voltage, current and other working states of the backlight module to the host, so that the power supply module of the host adjusts the voltage of the first electric signal to ensure that the backlight module can work according to the rated current, thereby reducing the loss.

[0121] For example, the host can send a backlight adjustment instruction to the screen SOC through the UART or IIC channel, the screen SOC receives the backlight adjustment instruction, adjusts the backlight brightness, and feeds back the adjusted backlight brightness to the host through the FB signal, so as to ensure the stable constant current output of the backlight module.

[0122] The power supply control circuit 214 can convert the second electrical signal into different voltages after receiving the second electrical signal with a voltage of 12V, for example, supply power to the display panel (which can also be referred to as a panel or a TCON) through a 12V VCC power supply interface, supply power to the SOC through +5V, and the like.

[0123] In some embodiments, the power supply control circuit can include multiple DCDC circuits when implemented, and each DCDC is used to convert the received 12V voltage into a voltage.

[0124] In some embodiments, in order to ensure the safety of the host 10 when transmitting power to the display screen 20 through the external cable 30, when the display device is powered on, the host 10 can first transmit a second electrical signal with a lower voltage to the display screen through the first connection line interface 112, the cable 30 and the second connection line interface 211 in turn, and then the host 10 transmits a first electrical signal with a higher voltage to the display screen through the first connection line interface 112, the cable 30 and the second connection line interface 211 in turn.

[0125] Correspondingly, when the display device is powered off, the host 10 can first stop transmitting the first electrical signal with a higher voltage to the display screen 20, and then stop transmitting the second electrical signal with a lower voltage to the display screen 20.

[0126] II. The host 10 sends the to-be-displayed picture to the display screen 20 through the cable 30 for display.

[0127] The display screen 20 provided in the embodiment can be a display mode combining a backlight module 22 and a display panel 23. The display panel 23 of the display screen 20 can 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 function film, and the like. The display screen 20 can display a picture corresponding to an optical signal on the display panel 23, and cooperate with the backlight of the display screen to realize the display function. Therefore, in addition to supplying power to the backlight module 22 and the display panel 23 of the display screen, the host 10 also needs to provide an electrical signal of the display picture to the display panel 23, and finally realize the display function of the display screen.

[0128] In some embodiments, in the embodiment, after receiving the HDMI signal, the host 10 converts the HDMI signal into an optical signal, and then transmits the optical signal to the display screen 20 through the optical fiber in the cable 30 for transmitting the optical signal.

[0129] After receiving the optical signal sent by the host 10, the display screen 20 converts the optical signal into an HDMI signal, and then the HDMI signal is converted into a VB1 signal by the SOC 212, and the VB1 signal is sent to the display panel 23 for display.

[0130] In some embodiments, since the host 10 supplies power to the backlight module 22 and the display panel 24 of the display screen 20 through two electrical signals respectively, in order to unify the timing of the two, the SOC 212 determines that the display screen 20 is connected with the host 10 through the connecting line 30, the host 10 starts to supply power to the display screen 20 through the cable 30, and after it is determined that the HDMI signal is stable, the STB signal can be first sent to the display control circuit 215 in the display screen 20, which is used to instruct that the display panel can be powered.

[0131] In some embodiments, after the host 10 accesses the HDMI signal, the +5V (host power supply output control signal) will open the VCC power supply, and the VCC drives the optical fiber and the mainboard of the display screen 20 to work. After the mainboard of the display screen 2 works, the HDMI_HPD is pulled high, which informs the host 10 to read the DDC data and start to transmit the HDMI signal. After the host 10 successfully reads the DDC data, it can be considered that the signal transmission between the host 10 and the display screen 20 is successfully established.

[0132] For the display control circuit 215, after receiving the STB signal, it can be turned on, so that the 12V power supply transmitted by the host 10 can pass through the display control circuit 215 to supply power to the display panel 23. Subsequently, the SOC 212 receives the HDMI signal and converts it into a VB1 signal, and then sends it to the display panel 23 for display. Finally, after a certain delay, the SOC 212 controls the backlight control circuit 213 to supply power to the backlight module 22.

[0133] In some embodiments, in order to ensure that the output quality of various HDMI format signals is optimal, a detection circuit and an adjustment circuit can be arranged in the display device.

[0134] In some embodiments, before outputting different format signals, the HDMI source end will initiate a DDC command to read the device EDID signal of the HDMI sink end. The HDMI source end sends the highest format signal that the display screen can support according to the receiving capability of the device end. The detection circuit parses the communication content of the DDC channel, identifies the signal format to be transmitted at present, the adjustment circuit adapts the pre-adjustment optimal EQ parameter of the corresponding format, adjusts the signal transmitted by the host, and ensures that the quality of the signal received by the display screen is optimal.

[0135] III. Control signal interaction between the host 10 and the display screen 20.

[0136] The control signal between the host 10 and the display screen 20 can be realized by an IIC (also known as I2C) channel, wherein the SOC 111 in the host 10 can connect the SOC 212 in the display screen 20 through a transmission line in the cable 30 for transmitting I2C signals, and send a control signal to the SOC 212, which can be used for relevant control of the SOC 212.

[0137] In some embodiments, the backlight control circuit 213 can also receive the backlight control signal sent by the host 10 through the above-mentioned I2C communication interface, and adjust the brightness of the backlight module according to the backlight control signal.

[0138] Four, the interaction between the host 10 and the display screen 20 in the on-off state.

[0139] The connection line 30 between the host 10 and the display screen 20 also includes a UART connection, and the SOC 111 of the host 10 can connect the SOC 212 of the display screen 20 through a transmission line in the cable 30 for transmitting UART signals, and send an on-off signal and other UART signals to the SOC 212, wherein the on-off signal includes: power-on, power-off and standby signals. For example, during standby, when the SOC 111 of the host 10 determines that the user presses the standby key, it sends a standby signal to the SOC 212 of the display screen 20 through the URAT communication interface, instructing the display screen 20 to enter the standby flow and turn off the power supply of the display screen to enter the standby state, and after completion, it can inform the SOC 111 of the host 10 that it has entered the standby state through the URAT communication interface.

[0140] In some embodiments, when the host 10 receives a standby instruction, the SOC 111 notifies the screen SOC to enter the standby flow and turn off the screen power supply through UART, and the screen SOC feeds back to the SOC 111 through the UART interface after completion, and the SOC 111 turns off the screen SOC power supply after receiving the feedback signal.

[0141] Five, after the host 10 is connected with the display screen 20, slow power-on safety detection is performed.

[0142] Among them, the mainboard 21 of the display screen 20 is also provided with a resistor R2, wherein the second end of the resistor R2 is grounded, which can be used for detecting whether the second connection line interface located on one side of the display screen 20 is connected with the first connection line interface on one side of the host 10 through the connection line, that is, whether the display screen 20 is connected with the host 10.

[0143] In some embodiments, since the display device provided by the embodiments of the present application, the host 10 will supply power to the backlight module of the display screen 20 through the cable 30, and the 350V voltage transmitted on the cable 30 for power supply is high. In order to prevent the user from lacking experience or improper operation, if the connection line between the host 10 and the display screen 20 is not connected, the host 10 directly transmits 350V high voltage to the display screen 20 through the cable 30, which will bring safety hazards to the display device itself and the user. Therefore, the resistor R2 is arranged on the mainboard 21 of the display screen 20 side for detection. When the display screen 20 is not connected with the host 10 through the connection line 30, the resistor R2 will pull up the communication interface HILINK HPD connected at the first end to high level. When the display screen 20 is connected with the host 10 through the cable 3, that is, the connection between the first connection line interface and the second connection line interface is connected through the cable 30, the resistor 218 will pull down the communication interface HILINK HPD to low level. At the same time, the power supply control circuit transmits the converted 5V voltage to the SOC. When the SOC receives the 5V voltage, it sends a high level signal to the SOC 111 on the host 10 side through the HDMI HPD communication interface (not shown) of the second connection line interface. Figure 9 For the SOC on the host 10 side, only when the low level HILINK HPD and the high level HDMI HPD are received at the same time, it can be determined that the host 10 and the display screen 20 have completed the connection through the connection line 30, and then the 350V voltage is transmitted to the display screen 20 through the connection line 30, so as to ensure that the host 10 transmits 350V high voltage to the display screen 20 through the connection line 30 only when the connection line 30 between the host 10 and the display screen 20 is connected, thereby reducing the safety hazards of the display device itself and the user.

[0144] In some embodiments, referring to Figure 10 , Figure 10 the power supply control schematic diagram of the display device provided in the embodiments of the present application.

[0145] In some embodiments, three detection switches can be designed in the host 10 to control the high voltage power output, which are detection switches K1, K2 and K3 respectively. Two detection switches can be designed in the display screen to control the high voltage power output, which are switches K4 and K5 respectively.

[0146] Among them, the detection switches K1 and K4 are used to detect whether the connection line between the host 10 and the display screen 20 supports 350V high voltage transmission. If it supports, the detection switches K1 and K4 are closed, otherwise the detection switches K1 and K4 are opened.

[0147] The detection switch K2 is used to detect whether the signal connection between the host 10 and the display screen 20 is normal. When it is normal, the detection switch K2 is closed, otherwise it is opened.

[0148] The detection switch K3 is used to detect whether there is a connection relationship between the host 10 and the display screen 20. When connected, the detection switch K3 is closed, otherwise it is opened.

[0149] The detection switch K5 is closed after the display signal output from the host 10 to the display screen 20 is normal.

[0150] It can be understood that when the connection wire between the host 10 and the display screen 20 supports 350V high voltage transmission, the signal connection between the host 10 and the display screen 20 is normal, there is a connection relationship between the host 10 and the display screen 20, and the display signal output from the host 10 to the display screen 20 is normal, the detection switches K1, K2, K3, K4 and K5 will all be in the closed state. At this time, the 350V input voltage in the host 10 can supply power to the backlight module in the display screen 20.

[0151] In order to realize the above functions, the first connection line interface and the second connection line interface are designed. Both the first connection line interface and the second connection line interface support the function of hot plug, which can ensure automatic connection after the cable is inserted.

[0152] In some embodiments, in order to realize the above functions, the display device needs to set a communication interface in the first connection line interface 112 on the host 10 side, and also set a corresponding communication interface in the second connection line interface 211 on the display screen 20 side, so that the transmission line for transmitting the corresponding signal in the connection line is connected with the corresponding communication interface on both sides, to realize the related functions. For example, for the HDMI interface set in the second connection line interface 211, the first connection line interface 112 also sets an HDMI interface, and through the two ends of the transmission line for transmitting the HDMI signal in the connection line connected with the two HDMI interfaces, the transmission of the HDMI signal between the first connection line interface 112 and the second connection line interface 211 can be realized, that is, the HDMI signal transmission between the host 10 and the display screen 20 is realized.

[0153] In some embodiments, the application also provides a design of a connection line interface capable of realizing the above functions. The connection line interface can be the first connection line interface or the second connection line interface, and the connection line interface includes at least 36 communication interfaces numbered 1-36. The serial number of each communication interface and the corresponding function are shown in Table 1.

[0154] Table 1

[0155]

[0156]

[0157] The communication interface 1 is used for connecting the optical fiber power line, and can be used for transmitting 5V / 3.3V power supply and standby power supply when the host is powered by the optical fiber.

[0158] The communication interface 2-12 is used for transmitting HDMI signal, and can be used as the HDMI communication interface as shown in FIG. 2. Figure 9

[0159] The communication interface 13-15 is used for transmitting USB signal.

[0160] The communication interface 16, 30-32 is used for transmitting first electric signal; the first electric signal is used for powering the backlight module of the display device.

[0161] The communication interface 17 is used for receiving detection signal of whether the first connection line interface is connected with the display screen, and can be used as the HILINK HPD communication interface as shown in FIG. 3. Figure 9

[0162] The communication interface 18-19 is used for transmitting IIC signal, and can be used as IIC communication interface.

[0163] The communication interface 20-21 is used for transmitting UART signal, and can be used as UART communication interface.

[0164] The communication interface 22 is used for providing detection signal of whether the second connection line interface is connected with the host.

[0165] The communication interface 23, 33-36 is used for grounding.

[0166] The communication interface 24-28 is used for transmitting second electric signal; the second electric signal is used for powering the SOC and display panel of the display device.

[0167] The communication interface 29 is used for transmitting feedback signal sent by the backlight control circuit to the host, and can be used as the “FB” communication interface as shown in FIG. 4. Figure 9

[0168] It can be understood that the arrangement and combination of the communication interfaces shown in Table 1 are only one possible implementation, and the connection line interface with all the communication interfaces in Table 1 can realize all the functions in the above embodiments; or for the connection line interface which only needs to realize part of the functions, only part of the communication interfaces in Table 1 can be set.

[0169] ​​​Finally, through the above design, even if only one connection line is connected between the two connection line interfaces of two devices with the connection line interfaces shown in Table 1, the transmission of different signals in the connection line can be realized through the transmission lines in the connection line, combined with the corresponding communication interfaces on the two connection line interfaces, so that the transmission of various forms of signals including electrical signals, HDMI signals, USB signals, I2C signals, UART signals, etc. can be realized, thereby simplifying the complexity of the connection line between the connection line interfaces.

[0170] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized by comprising: The application relates to a host, a cable and a display screen which is designed separately from the host, the host and the display screen are connected through the cable, the host comprises a first conversion module and a power supply module, the display screen comprises a second conversion module, a backlight module, a display panel and a mainboard, the cable comprises a first wire and a second wire, the mainboard comprises an SOC chip and a resistor R2 which is used for detecting a connection state, the SOC is connected with the backlight module and the display panel respectively; the first conversion module is used for converting multimedia data accessed in the host from an electric signal into an optical signal, and transmitting the optical signal to the second conversion module through the first wire, the second conversion module is used for converting the received optical signal into an electric signal, and transmitting the converted electric signal to the display panel for display; the power supply module comprises a high-voltage power supply port, a first detection circuit and a second detection circuit, the high-voltage power supply port is connected with the backlight module through the second wire, the first detection circuit is used for detecting whether a voltage value that the second wire can withstand is greater than or equal to a voltage provided by the high-voltage power supply port, and the second detection circuit is used for detecting whether the host and the display screen have established a connection through the cable by means of the resistor R2 and a double HPD signal; when it is determined that the voltage value that the second wire can withstand is greater than or equal to the voltage provided by the high-voltage power supply port, and the host and the display screen have established a connection through the cable, the backlight module is powered; wherein a first end of the resistor R2 is connected with an HILINK HPD communication interface of a second connection line interface of the display screen, a second end of the resistor R2 is grounded, when the display screen is not connected with the host through the cable, the resistor R2 pulls up a level of the HILINK HPD communication interface to a high level; when the display screen is connected with the host through the cable, the resistor R2 pulls down the level of the HILINK HPD communication interface to a low level, meanwhile a power supply control circuit of the display screen transmits a converted voltage to the SOC chip, after the SOC chip receives the converted voltage, the SOC chip sends a high level signal to the SOC of the host through an HDMI HPD communication interface of the second connection line interface, the second detection circuit determines whether the host and the display screen have established a stable connection through the cable by identifying whether the SOC of the host simultaneously receives a low level HILINK HPD signal and a high level HDMI HPD signal.

2. The display device of claim 1, wherein, The first detection circuit is used for detecting whether the voltage value that the second wire can withstand is greater than or equal to the voltage provided by the high-voltage power supply port, and the second detection circuit is used for detecting whether the host and the display screen have established a connection through the cable.

3. The display device of claim 2, wherein, The power supply module further comprises a third detection circuit, the third detection circuit is connected with the mainboard, and the host is used for: When the multimedia data is accessed, the mainboard is started to work; The third detection circuit is used for: detecting whether the mainboard is successfully started, and determining that signal transmission between the host and the display screen is normal when it is detected that the mainboard is successfully started.

4. The display device of claim 3, wherein, The SOC chip is used for: After the host and the display screen are connected through the cable, the display panel is turned on; The electrical signal in the second conversion module is converted into a VB1 signal and then output to the display panel; The backlight module is turned on.

5. The display device of claim 4, wherein, The SOC chip is also used for: receiving a backlight adjustment instruction sent by the host, and adjusting the brightness of the backlight module according to the received backlight adjustment instruction; feeding back the adjusted brightness of the backlight module to the host.

6. The display device of claim 5, wherein, The SOC is also used for: receiving a standby instruction sent by the host, and closing the backlight module and the display panel according to the standby instruction, and feeding back a feedback signal that the display panel is successfully closed to the host after the display panel is closed; The host is used for entering a standby state after receiving the feedback signal.

7. The display device according to any one of claims 1 to 6, wherein The host further includes a multimedia data source port, which is used for receiving multimedia data transmitted by an external device.

8. The display device of claim 7, wherein, The multimedia data includes high-definition multimedia interface (HDMI) data.

9. The display device of claim 7, wherein, A detection circuit and an adjustment circuit are arranged between the host and the display screen; The detection circuit is used for analyzing data in a display data channel (DDC) between the host and the display screen, and determining the format of a data signal transmitted by the host to the display screen according to the data in the DDC; The adjustment circuit is used for adjusting signal quality parameters of the data signal transmitted by the host to the display screen according to the format of the data signal transmitted by the host to the display screen.

10. The display device of claim 1, wherein, The host includes a first connection line interface, and the display screen includes a second connection line interface, and the first connection line interface and the second connection line interface are connected through the cable; wherein the first connection line interface and the second connection line interface both support a hot plug function.

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