Switch assembly, docking station and display equipment

Abstract

The utility model discloses a switch assembly, a docking station and a display device, and relates to the field of docking station control. The docking station comprises a Type-C plug, an HDMI interface and a circuit board, the circuit board comprises a display signal conversion circuit, a first end of the display signal conversion circuit is electrically connected with the Type-C plug, a second end of the display signal conversion circuit is electrically connected with the HDMI interface, the switch assembly comprises a touch control assembly, and the touch control assembly is connected in series on a path between the display signal conversion circuit and the HDMI interface; and the touch control assembly is used for connecting or disconnecting a path between the display signal conversion circuit and the HDMI interface when the touch control assembly is triggered. The utility model aims to improve the operability of the docking station.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of docking station control, especially relates to a switch assembly, docking station and display equipment. BACKGROUND

[0002] The docking station product on the market can expand the multifunctional USB-C interface of the notebook computer or the smart phone into the traditional data transmission interface and video display interface through the wire connection, the data transmission interface includes USB-A, USB-C, SATA, RJ45, SD / TF etc., and the display interface includes HDMI, DisplayPort, VGA, DVI etc., wherein the expansion of the display interface can project and expand the content of the notebook computer or the smart phone to the large display or the projector, so as to help you use multiple screens more efficiently, improve the work efficiency and the convenience.

[0003] However, when using the docking station to project the content in the notebook computer or the smart phone to the large display or the projector, if the content is classified, it is inconvenient to show, then the projection needs to be interrupted, the existing interruption method is to pull out the docking station or the HDMI wire, but this kind of mode is not only inconvenient to operate, but also interrupts the use of other interfaces of the docking station, such as the USB reading and writing in transmission, RJ45 network connection etc. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a switch assembly, docking station and display equipment, which aims at improving the operability of the docking station.

[0005] In order to achieve the above-mentioned purpose, the switch assembly provided by the utility model is applied to the docking station, the docking station includes a Type-C plug, an HDMI interface and a circuit board, the circuit board includes a display signal conversion circuit, the first end of the display signal conversion circuit is electrically connected with the Type-C plug, the second end of the display signal conversion circuit is electrically connected with the HDMI interface, and the switch assembly comprises:

[0006] A touch control assembly is connected in series on the path between the display signal conversion circuit and the HDMI interface, and the touch control assembly is used for turning on or turning off the path between the display signal conversion circuit and the HDMI interface when being triggered.

[0007] In an embodiment, the switch assembly further comprises:

[0008] A switch circuit, the first end of the switch circuit is electrically connected with a power supply end, and the controlled end of the switch circuit is electrically connected with the display signal conversion circuit.

[0009] A prompt circuit, a first end of the prompt circuit is electrically connected with the second end of the switch circuit, and a second end of the prompt circuit is electrically connected with a ground end; the prompt circuit is used for outputting a prompt signal;

[0010] Wherein, when the touch component turns on the path between the display signal conversion circuit and the HDMI interface, the switch circuit turns on the path between the power supply end and the prompt circuit; when the touch component turns off the path between the display signal conversion circuit and the HDMI interface, the switch circuit turns off the path between the power supply end and the prompt circuit.

[0011] In an embodiment, the switch circuit comprises a first resistor and a switch tube; the prompt circuit comprises a light emitting diode;

[0012] Wherein, a first end of the first resistor is electrically connected with the power supply end, a second end of the first resistor is electrically connected with a first end of the switch tube, a controlled end of the switch tube is electrically connected with the display signal conversion circuit, a second end of the switch tube is electrically connected with an anode of the light emitting diode; a cathode of the light emitting diode is electrically connected with the ground end.

[0013] In an embodiment, the switch assembly further comprises a pull-down circuit, a first end of the pull-down circuit is electrically connected with the controlled end of the switch circuit, and a second end of the pull-down circuit is electrically connected with a ground end.

[0014] The utility model further proposes a docking station, the docking station includes Type-C plug, HDMI interface circuit board and the switch assembly of any one of the above;

[0015] Wherein, the circuit board comprises a display signal conversion circuit, a first end of the display signal conversion circuit is electrically connected with the Type-C plug, and a second end of the display signal conversion circuit is electrically connected with the HDMI interface.

[0016] In an embodiment, the display signal conversion circuit comprises a DP to HMDI chip.

[0017] In an embodiment, the circuit board further comprises a master control circuit, a first end of the master control circuit is electrically connected with an input end of the display signal conversion circuit, and a second end of the master control circuit is electrically connected with the Type-C plug.

[0018] Wherein, the master control circuit is used for receiving an opening signal output by the display signal conversion circuit and outputting a request signal to the Type-C plug.

[0019] The utility model further proposes a display device, the display device comprises a host computer, a display and the docking station of any one of the above.

[0020] In one embodiment, the host includes a Type-C interface, and when the Type-C plug is inserted into the Type-C interface, the host is electrically connected to the docking station.

[0021] In one embodiment, the display includes an HDMI plug, and when the HDMI plug is connected to the HDMI interface, the display is electrically connected to the docking station.

[0022] This invention employs a switch assembly connected in series in the path between the display signal conversion circuit and the HDMI interface within the expansion dock. Multiple paths exist between the display signal conversion circuit and the HDMI interface; the switch assembly is connected only in series in the path where the display signal conversion circuit receives confirmation of display connection from the HDMI interface and the display outputs a signal indicating a confirmed connection. By opening or closing this signal transmission path, the expansion dock can request or stop requesting the host to output a display signal during the handshake communication process with the host. In this way, the user can trigger a touch component, thereby controlling the display signal output from the host and effectively improving the operability of the expansion dock. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the switch assembly of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of an embodiment of the switch assembly of this utility model;

[0026] Figure 3 This is a circuit diagram of an embodiment of the switching assembly of this utility model;

[0027] Figure 4 This is a schematic diagram of another embodiment of the switching assembly of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the expansion dock of this utility model.

[0029] Explanation of icon numbers:

[0030] 10. Switch assembly; 11. Touch assembly; 12. Switch circuit; 13. Prompt circuit; 14. Pull-down circuit; 20. Display signal conversion circuit; 30. HDMI interface; 40. Main control circuit.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Currently available docking stations can expand the multi-functional USB-C port of a laptop or smartphone into a traditional data transfer interface and video display interface via cable connection. Data transfer interfaces include USB-A, USB-C, SATA, RJ45, SD / TF, etc., while display interfaces include HDMI, DisplayPort, VGA, DVI, etc. The expanded display interface allows you to project the content from your laptop or smartphone onto a large monitor or projector, helping you utilize multiple screens more efficiently and improving work efficiency and convenience.

[0036] However, when using a docking station to project content from a laptop or smartphone onto a large monitor or projector, if the content is confidential and inconvenient to display, the projection needs to be interrupted. The current method for interruption is to unplug the docking station or the HDMI cable, but this is not only inconvenient but also interrupts the use of other docking station interfaces, such as USB read / write operations and RJ45 network connections.

[0037] Therefore, refer to Figure 1 and Figure 5 This utility model proposes a switch assembly 10 for use in a docking station. The docking station includes a Type-C plug, an HDMI interface 30, and a circuit board. The circuit board includes a display signal conversion circuit 20. The first terminal of the display signal conversion circuit 20 is electrically connected to the Type-C plug, and the second terminal of the display signal conversion circuit 20 is electrically connected to the HDMI interface 30. The switch circuit 10 is assembled as follows:

[0038] A touch component 11 is connected in series between the display signal conversion circuit 20 and the HDMI interface 30; the touch component 11 is used to connect or disconnect the path between the display signal conversion circuit 20 and the HDMI interface 30 when triggered.

[0039] It's important to understand that most existing host computers output display signals as DisplayPort (DP) signals, while monitors typically receive display signals as HDMI signals. Therefore, when using a docking station to indirectly output the host computer's display signal to a monitor, the display signal conversion circuit 20 in the docking station needs to convert the DP signal to an HDMI signal. In this case, the display signal conversion circuit 20 includes a DP-to-HDMI chip. It's also understood that the host computer's output display signal can be other types, such as HDMI, VGA, or DVI signals; similarly, the monitor can receive other types of display signals, such as DP, VGA, or DVI signals. However, when the type of display signal output by the host computer matches the type of display signal the monitor needs to receive, the host computer's output signal does not need to be output to the HDMI interface 30 via the display signal conversion circuit 20. Therefore, this application is only applicable to hosts and monitors that require display signal conversion.

[0040] Optionally, the display signal conversion circuit 20 can employ a DP-to-HDMI circuit, an HDMI-to-DP circuit, a DP-to-VGA circuit, etc. It is understood that docking stations typically include multiple output interfaces. Therefore, docking stations usually contain multiple voltage display signal conversion circuits 20. For example, a docking station may have three output interfaces: HDMI, DP, and VGA, with the host outputting a DP signal. When the HDMI interface 30 is connected to a monitor, the DP-to-HDMI conversion circuit inside the docking station will convert the DP signal to an HDMI signal. When the VGA interface is connected to a monitor, the DP-to-VGA conversion circuit inside the docking station will convert the DP signal to a VGA signal. When the DP interface is connected to a monitor, the docking station will directly output the DP signal from the host to the corresponding DP interface. Furthermore, docking stations typically input display signals to multiple display signal conversion chips and, before actual output, confirm whether the corresponding interface is connected to a monitor. When the docking station's Type-C port is connected to a host (such as a laptop) and connected to a monitor via HDMI, DP, VGA, etc. ports, the PD protocol chip inside the docking station will communicate with the host via the CC channel to identify the connection status. If a monitor is connected, the PD protocol chip will detect changes in the HPD signal to confirm whether the monitor is connected. When the monitor is connected, it outputs an HPD signal to the corresponding display signal conversion circuit 20, which then outputs a signal to the PD protocol chip. After the docking station's PD protocol chip detects this signal, it can confirm that the monitor is connected to the interface and then negotiate the display output mode with the host via the CC channel.

[0041] In this embodiment, the touch component 11 is a physical switch, such as a button, knob, or toggle switch. The triggering device can extend out of the docking station via an electrical connection cable, or an opening can be provided on the docking station's housing for housing the triggering device. The user can trigger the triggering device, such as by toggling the toggle switch, to connect or disconnect the display signal conversion circuit 20 from the HDMI interface 30, thereby causing the display signal conversion circuit 20 to receive or not receive the HPD signal output by the display. Furthermore, when the display signal conversion circuit 20 receives the HPD signal output by the display, the host computer can confirm the output of the display signal through handshake communication with it via the docking station; when the display signal conversion circuit 20 does not receive the HPD signal output by the display, the host computer can confirm the cessation of display signal output through handshake communication with it via the docking station.

[0042] In this embodiment, a switch component 10 is employed and connected in series in the path between the display signal conversion circuit 20 and the HDMI interface 30 in the expansion dock. Multiple paths exist between the display signal conversion circuit 20 and the HDMI interface 30. The switch component 10 is connected only in series in the path where the display signal conversion circuit 20 receives confirmation of display connection from the HDMI interface 30 and the display outputs a signal indicating a confirmed connection. By turning this signal transmission path on or off, the expansion dock can request or stop requesting the host to output a display signal during the handshake communication between the expansion dock and the host. In this way, the user can trigger the touch component 11, thereby controlling the display signal output by the expansion dock and effectively improving the operability of the expansion dock.

[0043] refer to Figure 2 In one embodiment of the present invention, the switch assembly 10 further includes:

[0044] A switching circuit 12, wherein the first end of the switching circuit 12 is electrically connected to the power supply end, and the controlled end of the switching circuit 12 is electrically connected to the display signal conversion circuit 20;

[0045] The prompting circuit 13 has a first terminal electrically connected to the second terminal of the switching circuit 12, and the second terminal of the prompting circuit 13 is electrically connected to the ground terminal; the prompting circuit 13 is used to output a prompting signal.

[0046] Specifically, when the touch component 11 connects the display signal conversion circuit 20 and the HDMI interface 30, the switch circuit 12 connects the power supply terminal and the prompt circuit 13; when the touch component 11 disconnects the display signal conversion circuit 20 and the HDMI interface 30, the switch circuit 12 disconnects the power supply terminal and the prompt circuit 13.

[0047] It's important to understand that after the docking station's Type-C connector is plugged into the corresponding port on the host machine, the host machine will supply power to the docking station. Therefore, the docking station's initial power source is the Type-C connector. The power processing unit inside the docking station processes the power input from the Type-C connector and outputs it to various power-consuming units, such as converting the input voltage to 5V, 3.3V, etc., to power the prompt circuit 13, main control circuit 40, etc. Furthermore, after the docking station's Type-C connector is plugged into the corresponding port on the host machine, the docking station's HDMI interface 30 is electrically connected to the monitor via a data cable, and the docking station will output 5V voltage to the monitor. When the monitor receives this 5V voltage, it will change the level signal of a certain pin in the HDMI interface 30 to a high-level signal. This change in level signal will be communicated to the host machine via the Type-C connector through a handshake communication method, causing the host machine to output a display signal to the docking station.

[0048] In this embodiment, the switching circuit 12 can be implemented using at least one switching transistor, such as a MOSFET, IGBT, thyristor, transistor, or power transistor. The first terminal of the switching circuit 12 is electrically connected to the voltage conversion unit in the expansion dock, and the second terminal is electrically connected to the display signal conversion circuit 20. The power supply terminal of the display signal conversion circuit 20 is also electrically connected to the voltage conversion unit, thus receiving power from the host computer through the voltage conversion unit. It is understood that after the Type-C plug of the expansion dock is plugged into the corresponding port of the host computer, the host computer will supply power to the expansion dock, and the display signal conversion circuit 20 will be in operation. Therefore, the display signal conversion circuit 20 will receive a high-level signal input from the HDMI interface 30. The touch component 11 will either turn the high-level signal on or off. Depending on whether the high-level signal is received, the display signal conversion circuit 20 will output a control signal to the controlled terminal of the switching circuit 12, causing the switching circuit 12 to turn on or off the path between the power supply terminal and the prompt circuit 13.

[0049] In this embodiment, the prompting circuit 13 can be implemented using an LED prompting circuit 13 or a vibration prompting circuit 13. The first terminal of the prompting circuit 13 is electrically connected to the switching circuit 12, and the second terminal of the prompting circuit 13 is electrically connected to the ground terminal, thereby enabling the prompting circuit 13 to output a prompting signal when the switching circuit 12 is on, and to stop outputting the prompting signal when the switching circuit 12 is off. Specifically, when the touch component 11 connects a data path between the display signal conversion circuit 20 and the HDMI interface 30, the display signal conversion circuit 20 outputs a control signal to the switching circuit 12, thereby enabling the switching circuit 12 to connect the power supply terminal and the prompting circuit 13; when the touch component 11 disconnects a data path between the display signal conversion circuit 20 and the HDMI interface 30, the display signal conversion circuit 20 outputs a control signal to the switching circuit 12, thereby enabling the switching circuit 12 to disconnect the power supply terminal and the prompting circuit 13. Taking an NMOS transistor as an example, when the touch component 11 conducts a certain data path between the display signal conversion circuit 20 and the HDMI interface 30, the display signal conversion circuit 20 will output a high-level signal to the NMOS transistor, thereby causing the NMOS transistor to conduct the path between the power supply terminal and the prompt circuit 13; when the touch component 11 disconnects a certain data path between the display signal conversion circuit 20 and the HDMI interface 30, the display signal conversion circuit 20 will output a low-level signal to the NMOS transistor, thereby causing the NMOS transistor to disconnect the path between the power supply terminal and the prompt circuit 13.

[0050] Optionally, refer to Figure 3 The switching circuit 12 includes a first resistor R1 and a switching transistor Q; the prompting circuit 13 includes a light-emitting diode D.

[0051] Wherein, the first end of the first resistor R1 is electrically connected to the power supply terminal, the second end of the first resistor R1 is electrically connected to the first end of the switching transistor Q, the controlled end of the switching transistor Q is electrically connected to the display signal conversion circuit 20, the second end of the switching transistor Q is electrically connected to the anode of the light-emitting diode D, and the cathode of the light-emitting diode D is electrically connected to the ground terminal.

[0052] refer to Figure 4 In one embodiment of the present invention, the switch assembly 10 further includes a pull-down circuit 14, the first end of the pull-down circuit 14 being electrically connected to the controlled end of the switch circuit 12, and the second end of the pull-down circuit 14 being electrically connected to the ground end.

[0053] In this embodiment, the pull-down circuit 14 can be implemented using a second resistor R2. The first end of the second resistor R2 is electrically connected to the controlled terminal of the switching circuit 12, and the second end of the second resistor R2 is electrically connected to ground. The pull-down circuit 14 pulls down the signal received by the controlled terminal of the switching circuit 12, so that the pin connected to the display signal conversion circuit 20 of the switching circuit 12 has an internal pull-down function, and ensures that the pin is in a low-level state when the switching transistor is not turned on, thus ensuring the stability of the display signal conversion circuit 20.

[0054] refer to Figure 5 This utility model also proposes an expansion dock, which includes a Type-C plug, an HDMI interface 30 circuit board, and a switch assembly 10 as described in any of the above claims; wherein, the circuit board includes a display signal conversion circuit 20, a first terminal of which is electrically connected to the Type-C plug, and a second terminal of which is electrically connected to the HDMI interface 30. It is worth noting that since this utility model's expansion dock is based on the aforementioned switch assembly 10, the embodiments of this utility model's expansion dock include all the technical solutions of all embodiments of the aforementioned switch assembly 10, and the achieved technical effects are completely the same, and will not be repeated here.

[0055] In one embodiment of this utility model, the display signal conversion circuit 20 includes a DP to HDMI chip.

[0056] In this embodiment, the display signal input to the Type-C plug is a DP signal, and the display signal output to the HDMI interface 30 is an HDMI signal. The DP to HDMI chip can decode the received DP signal, extract the video and audio data, and re-encode the decoded data into a signal format conforming to the HDMI standard for output to the HDMI interface 30.

[0057] refer to Figure 5 In one embodiment of the present invention, the circuit board further includes a main control circuit 40, the first terminal of the main control circuit 40 being electrically connected to the input terminal of the display signal conversion circuit 20, and the second terminal of the main control circuit 40 being electrically connected to the Type-C plug.

[0058] The main control circuit 40 is used to receive the turn-on signal output by the display signal conversion circuit 20 and output a request signal to the Type-C plug.

[0059] In this embodiment, the main control circuit 40 can be implemented using a PD protocol chip. The PD protocol chip can detect whether the docking station is connected to a host that supports the PD protocol and communicates via the CC channel to determine the roles of power supplier and power user. The PD protocol chip also negotiates power capabilities with the host via the CC channel to ensure the docking station receives sufficient power. It dynamically adjusts the power output according to the needs of the connected devices. For example, when a USB device is plugged in, the PD protocol chip can request more power to meet the needs of these devices. The Type-C plug can support multiple Alt Modes, or alternative modes, through the PD protocol chip. These modes allow the Type-C plug to transmit other types of high-speed data besides USB data, such as DisplayPort, HDMI, Thunderbolt, etc. For example, if the host supports outputting DisplayPort signals through the Type-C interface, the PD protocol chip will negotiate with the host via the CC channel to enable DisplayPort Alt Mode and request the host to start outputting video signals.

[0060] This utility model also proposes a display device, which includes a host, a display, and a docking station as described in any of the above claims. It is worth noting that since the display device of this utility model is based on the aforementioned docking station, the embodiments of the display device of this utility model include all the technical solutions of all the embodiments of the aforementioned docking station, and the achieved technical effects are exactly the same, and will not be repeated here.

[0061] In one embodiment of this utility model, the host includes a Type-C interface, and when the Type-C plug is connected to the Type-C interface, the host is electrically connected to the docking station.

[0062] Optionally, the display includes an HDMI plug, and when the HDMI plug is connected to the HDMI interface, the display is electrically connected to the docking station.

[0063] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A switching assembly applied to a docking station, the docking station including a Type-C plug, an HDMI interface, and a circuit board, the circuit board including a display signal conversion circuit, a first terminal of the display signal conversion circuit being electrically connected to the Type-C plug, and a second terminal of the display signal conversion circuit being electrically connected to the HDMI interface, characterized in that... The switching assembly: A touch component is connected in series in the path between the display signal conversion circuit and the HDMI interface; the touch component is used to turn on or off the path between the display signal conversion circuit and the HDMI interface when triggered.

2. The switching assembly as claimed in claim 1, characterized in that, The switching assembly further includes: A switching circuit, wherein the first terminal of the switching circuit is electrically connected to the power supply terminal, and the controlled terminal of the switching circuit is electrically connected to the display signal conversion circuit; The prompting circuit has a first terminal electrically connected to the second terminal of the switching circuit, and the second terminal of the prompting circuit is electrically connected to the ground terminal; the prompting circuit is used to output a prompting signal. Specifically, when the touch component connects the display signal conversion circuit and the HDMI interface, the switch circuit connects the power supply terminal and the prompt circuit; when the touch component disconnects the display signal conversion circuit and the HDMI interface, the switch circuit disconnects the power supply terminal and the prompt circuit.

3. The switching assembly as described in claim 2, characterized in that, The switching circuit includes a first resistor and a switching transistor; the indication circuit includes a light-emitting diode. Wherein, the first end of the first resistor is electrically connected to the power supply terminal, the second end of the first resistor is electrically connected to the first end of the switching transistor, the controlled end of the switching transistor is electrically connected to the display signal conversion circuit, the second end of the switching transistor is electrically connected to the anode of the light-emitting diode, and the cathode of the light-emitting diode is electrically connected to the ground terminal.

4. The switching assembly as claimed in claim 2, characterized in that, The switch assembly further includes a pull-down circuit, the first end of which is electrically connected to the controlled end of the switch circuit, and the second end of which is electrically connected to the ground terminal.

5. An expansion dock, characterized in that, The expansion dock includes a Type-C plug, an HDMI interface circuit board, and a switch assembly as claimed in any one of claims 1 to 4; The circuit board includes a display signal conversion circuit, the first end of which is electrically connected to the Type-C plug, and the second end of which is electrically connected to the HDMI interface.

6. The expansion dock as described in claim 5, characterized in that, The display signal conversion circuit includes a DP to HDMI chip.

7. The expansion dock as described in claim 5, characterized in that, The circuit board also includes a main control circuit, the first terminal of which is electrically connected to the input terminal of the display signal conversion circuit, and the second terminal of which is electrically connected to the Type-C plug. The main control circuit is used to receive the turn-on signal output by the display signal conversion circuit and output a request signal to the Type-C plug.

8. A display device, characterized in that, The display device includes a host, a monitor, and a docking station as described in any one of claims 5 to 7.

9. The display device as claimed in claim 8, characterized in that, The host includes a Type-C interface, and when the Type-C plug is connected to the Type-C interface, the host is electrically connected to the docking station.

10. The display device as claimed in claim 8, characterized in that, The display includes an HDMI plug, and when the HDMI plug is connected to the HDMI interface, the display is electrically connected to the docking station.

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