Liquid crystal driving board, liquid crystal display device and liquid crystal display system

Abstract

The utility model provides a liquid crystal driving board, liquid crystal display equipment and a liquid crystal display system. The liquid crystal driving board comprises a decompression chip, a first processing chip, a first network interface and a connector, the first network interface, the decompression chip, the first processing chip and the connector are connected in sequence; the liquid crystal driving board is used for receiving a video signal and a control signal through the first network interface, or is used for receiving the video signal through the first network interface and transmitting the processed video signal to the liquid crystal display panel through the connector; the liquid crystal driving board is connected with the liquid crystal display panel through the connector, and the liquid crystal display panel is used for displaying the processed video signals transmitted by the liquid crystal driving board. The liquid crystal driving board provided by the utility model can realize long-distance video signal transmission.

Description

[0001] This application is a divisional application of the Chinese patent application submitted to the China Patent Office on September 28, 2023, with application number 202322674498.7 and application name "Liquid Crystal Display Device, Video Processing Device and Liquid Crystal Display System". Technical Field

[0002] The present application belongs to the technical field of liquid crystal display screens, and in particular, relates to a liquid crystal driving panel, a liquid crystal display device, and a liquid crystal display system. Background Art

[0003] Liquid Crystal Display (LCD) is favored by engineers for its low power consumption. In current exhibitions, conference rooms, command centers and other usage scenarios, LCD screens usually need to transmit high-resolution video signals. Related technologies usually use HDMI (High Definition Multimedia Interface) or DVI (Digital Visual Interface) cables for signal transmission. This method has a limited transmission distance and is difficult to apply in some long-distance usage scenarios. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a liquid crystal driving panel, a liquid crystal display device and a liquid crystal display system, which can solve the problem in the prior art that liquid crystal display devices are difficult to apply to long-distance usage scenarios.

[0005] To achieve the above-mentioned purpose, in the first aspect, the liquid crystal driver board includes a decompression chip, a first processing chip and a first network interface, and a connector; the first network interface, the decompression chip, the first processing chip and the connector are connected in sequence; the liquid crystal driver board is used to receive video signals and control signals through the first network interface, or to receive video signals through the first network interface and transmit the processed video signals to the liquid crystal display panel through the connector; the liquid crystal driver board is connected to the liquid crystal display panel through the connector, and the liquid crystal display panel is used to display the processed video signals transmitted by the liquid crystal driver board.

[0006] Optionally, the liquid crystal driving board further includes a cascade transmission interface, which is connected to the cascade transmission interface and is used to transmit the video signal to the other liquid crystal driving boards to achieve cascade transmission of the video signal.

[0007] Optionally, the LCD driver board also includes a network transformer, which is respectively connected to the first network interface and the decompression chip, and is used to receive the video signal and transmit the video signal to the decompression chip; or is used to receive the video signal and the control signal, and transmit the video signal and the control signal to the decompression chip.

[0008] Optionally, the liquid crystal driving board further includes a second network interface connected to the first processing chip and configured to receive the control signal input by the control device, thereby achieving separation of the control signal and the video signal.

[0009] Optionally, the LCD driver board also includes a first control chip, which is connected to the first network interface and the first processing chip, and / or connected to the second network interface and the first processing chip, and is used to send a control instruction corresponding to the control signal to the first processing chip.

[0010] Optionally, the liquid crystal driving board further includes a video transmission interface, and the video transmission interface is connected to the first processing chip, thereby providing different forms of video input modes to the user.

[0011] Optionally, the video transmission interface includes one or more of an HDMI interface, a DVI signal interface, a VGA signal interface, a DP interface, a USB interface, an SDI interface and a CVBS interface.

[0012] Optionally, the first network transmission interface is an RJ45 interface or an optical fiber transmission interface for realizing long-distance transmission.

[0013] In a second aspect, the present application provides a liquid crystal display device, comprising at least one liquid crystal display panel and a liquid crystal driver board arranged on the liquid crystal display panel; the liquid crystal driver board is configured with a decompression chip, a first processing chip and a first network interface connected to a video processing device, and a connector; the first network interface, the decompression chip, the first processing chip and the connector are connected in sequence; the liquid crystal driver board is used to receive video signals and control signals through the first network interface, or to receive video signals through the first network interface, and transmit the processed video signals to the liquid crystal display panel through the connector; the liquid crystal display panel comprises a substrate, an opposing substrate arranged opposite to the substrate, and a liquid crystal layer arranged between the substrate and the opposing substrate; the liquid crystal display panel is connected to the liquid crystal driver board through the connector, and is used to display the processed video signal transmitted by the liquid crystal driver board.

[0014] In a third aspect, the present application also provides a liquid crystal display system, comprising a liquid crystal display device as described in the second aspect, and a video processing device connected to the liquid crystal display device; the first network interface of the liquid crystal display device is connected to the third network interface of the video processing device.

[0015] The beneficial effect of the liquid crystal driver board provided in the present application is that in the liquid crystal display device provided in the present application, the liquid crystal driver board can receive the video signal input by the video processing device through the first network interface, and transmit the processed video signal to the liquid crystal display panel through the connector, so that the liquid crystal display panel can display the processed video signal transmitted by the liquid crystal driver board, so that the signal connected to the liquid crystal display device can be transmitted through the network interface, thereby meeting the long-distance transmission demand for video signals when using the liquid crystal display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A first structural schematic diagram of a liquid crystal display device provided in an embodiment of the present application;

[0018] Figure 2 A second structural schematic diagram of a liquid crystal display device provided in an embodiment of the present application;

[0019] Figure 3 A third structural schematic diagram of a liquid crystal display device provided in an embodiment of the present application;

[0020] Figure 4 A fourth structural schematic diagram of a liquid crystal display device provided in an embodiment of the present application;

[0021] Figure 5 A fifth structural schematic diagram of a liquid crystal display device provided in an embodiment of the present application;

[0022] Figure 6 A sixth structural schematic diagram of a liquid crystal display device provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the structure of a video processing device provided in an embodiment of the present application;

[0024] Figure 8 A schematic diagram of the specific structure of a video processing device provided in an embodiment of the present application;

[0025] Fig. 9It is a schematic diagram of the structure of the liquid crystal display system provided in the embodiment of the present application.

[0026] Among them, the figure marks are: 1-LCD display system; 10-LCD display device; 110-LCD driver board; 120-LCD display panel; 111-first network interface; 112-decompression chip; 113-first processing chip; 114-connector; 115-second network interface; 116-network transformer; 117-cascade transmission interface; 118-first control chip; 119-video transmission interface; 1110-audio output interface; 20-video processing device; 201-video input interface; 202-second processing chip; 2020-second control chip; 2021-third processing chip; 2022-compression chip; 203-third network interface; 30-control device. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In the description of the present application, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0031] See also Figure 1 , the liquid crystal display device 10 provided in the embodiment of the present application is now described.

[0032] In an embodiment of the present application, the liquid crystal display device 10 may include at least one liquid crystal display panel 120 (N is a positive integer greater than or equal to 1) and a liquid crystal driving board 110 disposed on the liquid crystal display panel 120 .

[0033] Specifically, the liquid crystal driving board 110 is configured with a first network interface 111, a decompression chip 112, a first processing chip 113 and a connector 114 which are connected in sequence. The first network interface 111 can be connected to the video processing device 20.

[0034] Among them, the decompression chip 112 and the first processing chip 113 are processing chips integrated with a processor, which can be used to process the video signal. Among them, the first processing chip 113 can be a field programmable gate array (FieldProgrammable Gate Array, FPGA) chip, which can be used to process the standard minimized transmission differential signal (TransitionMinimized Differential Signaling, TMDS). The decompression chip 112 can be an integrated circuit (Application Specific Integrated Circuit, ASIC) chip or other types of chips. The video processing device 20 can be a signal source device that provides a video signal to the liquid crystal drive board 110, or it can be a splicing processing device, or a seamless switching device. The first network interface 111 is a different network port on the liquid crystal display device 10, which can be an Ethernet interface (such as an RJ45 interface), a fiber optic network interface, etc. The connector 114 is a device for connecting to the liquid crystal display panel 120. In some embodiments, the connector 114 can be connected to the timing control circuit board (timing controller, TCON) and connected to the liquid crystal display panel 120 through the TCON board.

[0035] In the embodiment of the present application, the liquid crystal driving board 110 can be used to receive the video signal and the control signal through the first network interface 111; or, can be used to receive the video signal through the first network interface 111. Then, the processed video signal is transmitted to the liquid crystal display panel 120 through the connector 114.

[0036] The video signal may be input through the video processing device 20, and the control signal may be input through the video processing device 20, the control device 30 or other devices, which is not limited in this application.

[0037] The liquid crystal display panel 120 may be used to display the processed video signal transmitted by the liquid crystal driving panel 110 .

[0038] Specifically, the video processing device 20 can transmit a compressed video signal to the liquid crystal driving board 110 through the first network interface 111. The video signal can be a compressed TMDS signal. After the decompression chip 112 obtains the compressed video signal, it can perform a decompression operation and transmit the decompressed video signal (that is, a standard TMDS signal) to the first processing chip 113.

[0039] Accordingly, the first processing chip 113 may be used to receive the decompressed video signal and the control signal, and generate and send the processed video signal to the liquid crystal display panel 120 according to the control signal.

[0040] It should be noted that when the first processing chip 113 can process the compressed TMDS signal, the related functions of the decompression chip 112 can be implemented by the first processing chip 113 .

[0041] It should be noted that if Figure 2 As shown, when the video processing device 20 only inputs the video signal, the liquid crystal driving board may further include a second network interface 115, connected to the first processing chip 113 and the control device 30, for receiving the control signal input by the control device 30. The control device 30 may be a central control device for controlling the environmental components in the physical scene. The control device 30 may generate a control signal and transmit it to the liquid crystal driving board 110 through the second network interface 115.

[0042] The control signal is a signal used to control the display effect. After receiving the decompressed video signal, the first processing chip 113 can perform video processing on the decompressed video signal according to the control command parsed from the control signal to obtain a processed video signal, and send the processed video signal to the liquid crystal display panel 120, so that the liquid crystal display panel 120 achieves a corresponding display effect when displaying the processed video signal.

[0043] In the liquid crystal display device 10 provided in the present application, the liquid crystal driver board 110 can receive the video signal input by the video processing device 20 through the first network interface 111, and transmit the processed video signal to the liquid crystal display panel 120 through the connector 114, so that the liquid crystal display panel 120 can display the processed video signal transmitted by the liquid crystal driver board 110, so that the signal connected to the liquid crystal display device 10 can be transmitted through the network interface, thereby meeting the long-distance transmission demand for the video signal when using the liquid crystal display device 10.

[0044] Please refer to Figure 3In some embodiments of the present application, the liquid crystal drive panel 110 may further include a network transformer 116. The network transformer 116 is respectively connected to the first network interface 111 and the decompression chip 112, and is used to receive a video signal and transmit the video signal to the decompression chip 112, or to receive a video signal and a control signal, and transmit the video signal and the control signal to the decompression chip 112. It is understandable that the network transformer 116 can also be used for signal enhancement and anti-interference of the video signal, which is convenient for long-distance transmission. Among them, the control signal can enter the network transformer 116 through the first network interface 111, and transmit the control signal to the decompression chip 112 from the center tap of the network transformer 116.

[0045] The network transformer 116 and the first network interface 111 may be connected via multiple groups of differential signal pins. Specifically, the network transformer 116 and the first network interface 111 may transmit differential signals via four pairs of differential signal pins.

[0046] Please refer to Figure 4 In some embodiments of the present application, the above-mentioned liquid crystal driving board 110 may further include a cascade transmission interface 117. The cascade transmission interface 117 may be a network interface, or may be a video transmission interface such as an HDMI interface, a DVI signal interface, a VGA (Video Graphics Array) signal interface, a DP (DisplayPort) interface, a USB (Universal Serial Bus) interface, an SDI (Serial Digital Interface) interface, a CVBS (Composite Video Broadcast Signal) interface, etc. It can be understood that the cascade transmission interface 117 is consistent with the interface type of the interface that receives the above-mentioned video signal. For example, when the liquid crystal display device 10 receives a video signal from the first network interface 111, the cascade transmission interface 117 may be a network interface.

[0047] The cascade transmission interface 117 is connected to the decompression chip 112, and can be used to transmit the video signal to other liquid crystal drive boards 110. Specifically, the decompression chip 112 can realize one-input and two-output of the video signal, one of which is transmitted to the first processing chip 113 after decompression, and the other is directly transmitted to the cascade transmission interface 117 without decompression, and output to other liquid crystal drive boards 110 through the cascade transmission interface 117. In this way, the video signal input by the video processing device 20 can be transmitted between each liquid crystal drive board 110, so that the liquid crystal display panel 120 connected to different liquid crystal drive boards 110 can display the same video signal.

[0048] Furthermore, the liquid crystal display panels 120 connected to different liquid crystal driving boards 110 can display different parts of the video picture in the same video signal, so that these liquid crystal display panels 120 can be spliced ​​to display the complete video picture.

[0049] In order to enable the liquid crystal driving board 110 to drive different types of liquid crystal display panels 120 , in some embodiments of the present application, the connector 114 can transmit video streams with different resolutions.

[0050] At this time, the first processing chip 113 can be used to convert the processed video signal into a transmission signal transmitted by the connector 114, and output the signal to the liquid crystal display panel 120 through the connector 114 for display.

[0051] Exemplarily, the transmission signal transmitted by the connector 114 may include an LVDS (Low-Voltage Differential Signaling) signal, a V-By-One (VBO) signal interface, or other types of signals, which are not limited in the present application.

[0052] To process the control signal, see Figure 5 In some embodiments of the present application, the liquid crystal driving board 110 may further include a first control chip 118. The first control chip 118 is connected to the first network interface 111 and the first processing chip 113, and / or is connected to the second network interface 115 and the first processing chip 113, and is used to send a control instruction corresponding to the received control signal to the first processing chip 113. Furthermore, the first processing chip 113 may process the video signal according to the control instruction.

[0053] Also, see Figure 6 In order to support different forms of video input, the liquid crystal driving board may further include a video transmission interface 119. The video transmission interface 119 is connected to the first processing chip 113, and the video transmission interface includes at least one of an HDMI interface, a DVI interface, a DP interface, an SDI interface, a VGA interface, and a CVBS interface for receiving video signals. In some embodiments of the present application, the liquid crystal driving board 110 may further include an audio output interface 1110. The first processing chip 113 may be used to separate an audio signal from a video signal and output the audio signal through the audio output interface 1110.

[0054] After the liquid crystal driving board 110 transmits the processed video signal to the liquid crystal display panel 120 , the liquid crystal display panel 120 may display a picture.

[0055] Specifically, the liquid crystal display panel 120 may include a substrate, an opposite substrate disposed opposite to the substrate, and a liquid crystal layer disposed between the substrate and the opposite substrate.

[0056] According to the processed video signal, the liquid crystal driving board 110 can be used to form an electric field between the driving voltage on the pixel electrode and the common electrode voltage on the common electrode, so that the liquid crystal molecules in the liquid crystal layer are deflected under the action of the electric field, thereby driving the liquid crystal display panel 120 to display.

[0057] Correspondingly, such as Figure 7 As shown, the present application also provides a video processing device 20 , including a video input interface 201 , a second processing chip 202 and a third network interface 203 .

[0058] The second processing chip 202 is connected to the video input interface 201 and the third network interface 203 respectively, and can be used to receive the video signal transmitted by the video input interface and output the processed video signal through the third network interface.

[0059] Specifically, Figure 8 As shown, the second processing chip 202 can integrate the functions of the second control chip 2020, the third processing chip 2021, and the compression chip 2022, and can be used to process the video signal, and can specifically be an FPGA chip or an ASIC chip. Alternatively, the video processing device may include the second control chip 2020, and the second processing chip 202 integrates the functions corresponding to the third processing chip 2021 and the compression chip 2022. At this time, the second control chip 2020 is connected to the second processing chip 202.

[0060] The third network interface 203 may be an Ethernet interface, a fiber optic network interface, etc., and may be connected to the first network interface 111 via a network cable or a fiber optic cable.

[0061] In the implementation manner of the present application, the third processing chip 2021 is connected to the video input interface 201, the compression chip 2022 and the second control chip 2020, respectively, and is used to receive the control instructions transmitted by the second control chip 2020 and the video signal transmitted by the video input interface 201, and transmit the processed video signal to the compression chip 2022. The video signal to be transmitted, that is, the original video signal, can be generated by the video processing device 20 or input by an external video source. The third processing chip 2021 can perform image processing such as cropping, flipping, and translation on the video signal to be transmitted according to the control instructions transmitted by the second control chip 2020 to obtain a processed video signal, and transmit the processed video signal to the compression chip 2022.

[0062] The compression chip 2022 is connected to the third network interface 203, and can be used to output the processed video signal through the third network interface 203. Specifically, the compression chip 2022 can receive the processed video signal and transmit the processed signal to the third network interface 203. Through compression, the effective transmission bandwidth of the processed signal can be less than or equal to the transmission bandwidth of the connecting line between the third network interface 203 and the first network interface 111, thereby realizing network cable or optical fiber transmission. The compression algorithm of the compression chip 2022 can be implemented according to the highly compressed digital video codec standard algorithm H.264, the video compression standard algorithm H.265, the shallow compression algorithm (such as VC2, JPEG2000, JPEG XS), etc. In some examples, when the above-mentioned connecting line is a network cable, the transmission bandwidth can be 1Gbps, and when the above-mentioned connecting line is an optical fiber, the transmission bandwidth can reach 10Gbps.

[0063] The third network interface 203 is connected to the first network interface 111 of the liquid crystal display device 10, and can be used to transmit the processed signal to the liquid crystal display device 10. The processed signal will be used as a video signal received by the liquid crystal display device 10, processed by the liquid crystal display device 10, and displayed through the liquid crystal display panel 120.

[0064] In some embodiments of the present application, the video processing device 20 may further include a video input interface for receiving an external video source to obtain a video signal to be transmitted, wherein the video input interface includes one or more of an HDMI interface, a DVI signal interface, a VGA signal interface, a DP interface, a USB interface, an SDI interface, and a CVBS interface.

[0065] like Fig. 9 As shown, the present application also provides a liquid crystal display system 1, comprising the liquid crystal display device 10 as described above, and a video processing device 20 connected to the liquid crystal display device 10. The first network interface 111 of the liquid crystal display device 10 is connected to the third network interface 203 of the video processing device 20.

[0066] It should be understood that the specific structures and functions of the above-mentioned video processing device 20 and liquid crystal display device 10 can be referred to the above description, and this application will not elaborate on them.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A liquid crystal driving panel, characterized in that: The liquid crystal driving board includes a decompression chip, a first processing chip, a first network interface, and a connector; the first network interface, the decompression chip, the first processing chip and the connector are connected in sequence; The liquid crystal driving board is used to receive the video signal and the control signal through the first network interface, or is used to receive the video signal through the first network interface and transmit the processed video signal to the liquid crystal display panel through the connector; The liquid crystal driving board is connected to the liquid crystal display panel through the connector, and the liquid crystal display panel is used to display the processed video signal transmitted by the liquid crystal driving board.

2. The liquid crystal driving panel according to claim 1, characterized in that: The liquid crystal driving board also includes a cascade transmission interface, which is connected to the decompression chip and is used to transmit the video signal to other liquid crystal driving boards.

3. The liquid crystal driving panel according to claim 1, characterized in that: The liquid crystal driving board also includes a network transformer, which is respectively connected to the first network interface and the decompression chip, and is used to receive the video signal and transmit the video signal to the decompression chip; or to receive the video signal and the control signal, and transmit the video signal and the control signal to the decompression chip.

4. The liquid crystal driving panel according to claim 1, characterized in that: The liquid crystal driving board also includes a second network interface connected to the first processing chip and used for receiving the control signal input by the control device.

5. The liquid crystal driving panel according to claim 4, characterized in that: The liquid crystal driving board also includes a first control chip, which is connected to the first network interface and the first processing chip, and / or connected to the second network interface and the first processing chip, and is used to send a control instruction corresponding to the control signal to the first processing chip.

6. The liquid crystal driving panel according to any one of claims 1 to 5, characterized in that: The liquid crystal driving board also includes a video transmission interface, and the video transmission interface is connected to the first processing chip.

7. The liquid crystal driving panel according to claim 6, characterized in that: The video transmission interface includes one or more of an HDMI interface, a DVI signal interface, a VGA signal interface, a DP interface, a USB interface, an SDI interface and a CVBS interface.

8. The liquid crystal driving panel according to any one of claims 1 to 5, characterized in that: The first network interface is an RJ45 interface or an optical fiber transmission interface.

9. A liquid crystal display device, characterized in that: include: At least one liquid crystal display panel and a liquid crystal driving board arranged on the liquid crystal display panel; the liquid crystal driving board is configured with a decompression chip, a first processing chip and a first network interface, and a connector; the first network interface, the decompression chip, the first processing chip and the connector are connected in sequence; The liquid crystal driving board is used to receive the video signal and the control signal through the first network interface, or to receive the video signal through the first network interface and transmit the processed video signal to the liquid crystal display panel through the connector; The liquid crystal display panel includes a substrate, an opposing substrate arranged opposite to the substrate, and a liquid crystal layer arranged between the substrate and the opposing substrate; the liquid crystal display panel is connected to the liquid crystal driving board through the connector for displaying the processed video signal transmitted by the liquid crystal driving board.

10. A liquid crystal display system, characterized in that: It comprises the liquid crystal display device as claimed in claim 9, and a video processing device connected to the liquid crystal display device; the first network interface of the liquid crystal display device is connected to the third network interface of the video processing device.

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