Display device and electronic device

Abstract

The embodiment of the invention discloses display equipment and electronic equipment. The display equipment comprises a first USB-C interface, a second USB-C interface and a control module, the first USB-C interface and the second USB-C interface are both used for accessing external equipment; the control module is configured to set charging power distribution based on the number and sequence of the external devices accessed to the two USB-C interfaces, and charge the accessed external devices according to a power distribution result; the control module is further configured to determine a target USB-C interface based on the number and the sequence of the accessed external devices and perform screen projection based on a video data signal transmitted by the target USB-C interface, and the target USB-C interface is any one of the USB-C interface and the second USB-C interface. The technical problem that a desktop display device in the prior art is only provided with one USB-C interface and cannot meet the requirement that a user can connect two external devices at the same time is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of display device control, and in particular, to a display device and an electronic device. Background Art

[0002] As the USB-C interface has become the standard interface for mobile phones and computers, for the sake of convenient connection, more and more peripherals (such as monitors) have also added USB-C interfaces. Existing desktop monitors with USB-C interfaces generally have only one USB-C interface for connecting a mobile phone or a computer. Through this USB-C interface, an extended screen can be carried out, and at the same time, charging for the mobile phone / computer is supported.

[0003] However, existing desktop monitors with USB-C interfaces can only connect one external device with a USB-C interface. When a user wants to connect another mobile phone (computer) for charging and mutual transmission of USB data after connecting a computer (mobile phone) for charging and extended screen mirroring, due to the limitation of the number of USB-C interfaces, existing desktop monitors cannot meet the corresponding requirements. Summary of the Invention

[0004] The embodiments of the present invention provide a display device and an electronic device, which solve the technical problem that existing desktop display devices with only one USB-C interface cannot meet the user's need to connect two external devices simultaneously.

[0005] The embodiments of the present invention provide a display device, which includes a first USB-C interface, a second USB-C interface, and a control module;

[0006] Both the first USB-C interface and the second USB-C interface are electrically connected to the control module; both the first USB-C interface and the second USB-C interface are used for accessing external devices;

[0007] The control module is configured to set the charging power distribution based on the number and sequence of external devices accessed through the two USB-C interfaces, and charge the accessed external devices according to the power distribution result;

[0008] The control module is further configured to determine a target USB-C interface based on the number and sequence of accessed external devices, and perform screen mirroring based on the video data signal transmitted from the target USB-C interface, where the target USB-C interface is any one of the USB-C interface and the second USB-C interface.

[0009] Further, the control module is configured to:

[0010] When the number of externally connected devices is 1, determine the USB-C interface of the first USB-C interface and the second USB-C interface that is connected to the externally connected device as the target USB-C interface;

[0011] When the number of externally connected devices is 2, determine the USB-C interface of the first USB-C interface and the second USB-C interface that is first connected to the externally connected device as the target USB-C interface.

[0012] Further, the control module is configured to:

[0013] When the number of externally connected devices is 1, allocate a first charging power to the USB-C interface of the first USB-C interface and the second USB-C interface that is connected to the externally connected device;

[0014] When the number of externally connected devices is 2, allocate a second charging power to the USB-C interface of the first USB-C interface and the second USB-C interface that is first connected to the externally connected device, and allocate a third charging power to the USB-C interface of the second USB-C interface that is later connected to the externally connected device.

[0015] Further, the control module includes a USB PD protocol unit and a video processing unit;

[0016] The USB PD protocol unit is electrically connected to the first USB-C interface, the second USB-C interface, and the video processing unit respectively. The USB PD protocol unit is configured to transmit the plug-and-play signal of the USB-C interface of the externally connected device to the video processing unit;

[0017] The video processing unit is electrically connected to the first USB-C interface and the second USB-C interface respectively. The video processing unit is configured to obtain the video data signal of the target USB-C interface based on the plug-and-play signal and perform screen mirroring.

[0018] Further, the display device further includes a power supply module;

[0019] The power supply module is electrically connected to the first USB-C interface, the second USB-C interface, the USB PD protocol unit, and the video processing unit respectively;

[0020] The power supply module is used to supply power to the USB PD protocol unit and the video processing unit, and charge the externally connected devices connected to the first USB-C interface and the second USB-C interface based on the power distribution result;

[0021] The USB PD protocol unit is further configured to set the charging power allocation based on the number and sequence of external devices connected to the two USB-C interfaces, so as to obtain the power allocation result.

[0022] Further, the display device further includes a first switch module and a second switch module;

[0023] The first USB-C interface is electrically connected to the power supply module through the first switch module, and the first switch module is configured to be closed under the control of the USB PD protocol unit, so that the power supply module charges the external device connected to the first USB-C interface based on the power allocation result;

[0024] The second USB-C interface is electrically connected to the power supply module through the second switch module, and the second switch module is configured to be closed under the control of the USB PD protocol unit, so that the power supply module charges the external device connected to the second USB-C interface;

[0025] The USB PD protocol unit is electrically connected to the first switch module and the second switch module respectively, and the USB PD protocol unit is further configured to control the switch module connected to the corresponding USB-C interface to be closed based on the received plug-and-play signal.

[0026] Further, the display device further includes a display module;

[0027] The display module is electrically connected to the video processing unit, and is configured to project and display the video data signal of the target USB-C interface under the control of the video processing unit.

[0028] Further, the display device further includes a power interface, and the power supply module is electrically connected to an external power supply through the power interface.

[0029] Further, the first USB-C interface and the second USB-C interface are communicatively connected.

[0030] An embodiment of the present invention further provides an electronic device, and the electronic device includes the display device according to any of the above embodiments.

[0031] Embodiments of the present invention disclose a display device and an electronic device, including a first USB-C interface, a second USB-C interface, and a control module; both the first USB-C interface and the second USB-C interface are used to connect to external devices; the control module is configured to set charging power distribution based on the number and sequence of external devices connected to the two USB-C interfaces, and charge the connected external devices according to the power distribution result; the control module is further configured to determine a target USB-C interface based on the number and sequence of connected external devices, and perform screen mirroring based on the video data signal transmitted from the target USB-C interface, where the target USB-C interface is any one of the USB-C interface and the second USB-C interface. By providing two USB-C interfaces on the display device in this application, and configuring the control module to control that the external devices connected to the two USB-C interfaces can be charged and the video data signal transmitted from the target USB-C interface can be screen mirrored, the technical problem that the existing desktop display device only has one USB-C interface and cannot meet the user's need to connect two external devices simultaneously is solved, and the technical effect that the display device can connect two external devices with USB-C interfaces simultaneously is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a structural diagram of a display device provided by an embodiment of the present invention;

[0033] Figure 2 is a structural diagram of another display device provided by an embodiment of the present invention;

[0034] Figure 3 is a logic flowchart of the control module for setting power distribution provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0036] It should be noted that the terms "first", "second", etc. in the specification, claims, and drawings of the present invention are used to distinguish different objects, rather than to limit a specific order. Each of the following embodiments of the present invention can be executed independently, and the embodiments can also be combined with each other. The embodiments of the present invention do not make specific limitations in this regard.

[0037] Figure 1 is a structural diagram of a display device provided by an embodiment of the present invention.

[0038] AsFigure 1 As shown in the figure, the display device includes a first USB-C interface 10, a second USB-C interface 20, and a control module 30. The first USB-C interface 10 and the second USB-C interface 20 are both electrically connected to the control module 30. The first USB-C interface 10 and the second USB-C interface 20 are both used to connect to an external device 40.

[0039] The control module 30 is configured to set the charging power distribution based on the number and sequence of external devices 40 connected to the two USB-C interfaces, and charge the connected external devices 40 according to the power distribution result.

[0040] The control module 30 is further configured to determine the target USB-C interface based on the number and sequence of external devices 40 connected, and perform screen mirroring based on the video data signal transmitted from the target USB-C interface, where the target USB-C interface is any one of the first USB-C interface 10 and the second USB-C interface 20.

[0041] Specifically, two USB-C interfaces are provided on the display device, namely the first USB-C interface 10 and the second USB-C interface 20. When the control module 30 recognizes that only one of the first USB-C interface 10 and the second USB-C interface 20 is connected to an external device 40, the control module 30 performs set charging power distribution on the USB-C interface connected to the external device 40, so that the display device can charge the connected external device 40 according to the power distribution result, and then uses this USB-C interface as the target USB-C interface to perform screen mirroring display using the video data signal (DisplayPort, DP) in the external device 40 transmitted from the target USB-C interface.

[0042] When the control module 30 recognizes that both the first USB-C interface 10 and the second USB-C interface 20 are connected to external devices 40, the control module 30 performs set charging power distribution on both USB-C interfaces, so that the display device can charge the two connected external devices 40 simultaneously according to the power distribution result. Then, the control module 30 will default the USB-C interface that first connected to the external device 40 as the target USB-C interface, and perform screen mirroring display using the video data signal (DisplayPort, DP signal) in the external device 40 transmitted from the target USB-C interface. However, the USB-C interface that later connected to the external device 40 can still perform data transmission between the external device 40 and the display device.

[0043] So far, the display device provided by the embodiment of the present invention realizes the functions of charging and screen mirroring an external device connected to one USB-C interface, and at the same time, can charge another external device connected to the other USB-C interface and mutually transfer USB data.

[0044] It should be noted that the external device 40 can be any host device such as a mobile phone, a computer, etc. that can expand and screen mirror video data signals, and no specific limitation is made here.

[0045] By setting two USB-C interfaces on the display device in this application, and configuring the control module to control that the external devices connected to the two USB-C interfaces can be charged and control that the video data signals transmitted from the target USB-C interface can be screen mirrored, the technical problem that the existing desktop display device only sets one USB-C interface and cannot meet the user's need to connect two external devices at the same time is solved, and the technical effect that the display device can connect two external devices with USB-C interfaces at the same time is achieved.

[0046] Optionally, the control module 30 is configured as:

[0047] When the number of connected external devices 40 is 1, the USB-C interface of the first USB-C interface 10 and the second USB-C interface 20 that connects the external device is determined as the target USB-C interface;

[0048] When the number of connected external devices 40 is 2, the USB-C interface of the first USB-C interface 10 and the second USB-C interface 20 that first connects the external device 40 is determined as the target USB-C interface.

[0049] Specifically, when the control module 30 identifies that the number of connected external devices 40 is 1, it directly determines the USB-C interface of the first USB-C interface 10 and the second USB-C interface 20 that connects the external device 40 as the target USB-C interface; when the control module 30 identifies that the number of connected external devices 40 is 2, it means that both the first USB-C interface 10 and the second USB-C interface 20 are connected to the external device 40. At this time, the control module 30 will default to determine the USB-C interface that first connects the external device 40 as the target USB-C interface, that is, the external device 40 that is first connected to the two USB-C interfaces can be screen mirrored on the display device, and the later connected external device can only be charged and perform USB data transmission.

[0050] Optionally, the control module 30 is further configured to turn off the screen mirroring display of the previously connected external device 40 when receiving a screen mirroring switching instruction, and obtain the video data signal of the subsequently connected external device 40 for screen mirroring. The screen mirroring switching instruction is an instruction input by the user through the human-computer interaction module of the display device. The human-computer interaction module can be a touch display screen of the display device, or other input devices such as buttons and mice, and no specific limitation is made here.

[0051] Optionally, the control module 30 is configured to:

[0052] When the number of connected external devices 40 is 1, allocate a first charging power to the USB-C interface of the first USB-C interface 10 and the second USB-C interface 20 that connects the external device 40;

[0053] When the number of connected external devices 40 is 2, allocate a second charging power to the USB-C interface of the first USB-C interface 10 and the second USB-C interface 20 that first connects the external device 40, and allocate a third charging power to the USB-C interface of the second USB-C interface 20 that subsequently connects the external device 40.

[0054] Specifically, when the control module 30 identifies that the number of connected external devices 40 is 1, it directly performs set power allocation for the USB-C interface of the first USB-C interface 10 and the second USB-C interface 20 that connects the external device 40. The allocated power value is the first charging power X, and the connected external device 40 is charged according to the power allocation result. Obviously, the first charging power X needs to be less than or equal to the rated charging power of the display device.

[0055] When the control module 30 identifies that the number of connected external devices 40 is 2, it indicates that both the first USB-C interface 10 and the second USB-C interface 20 are connected to the external device 40. At this time, the control module 30 will perform set power allocation for both USB-C interfaces, and the allocated power values are to allocate a second charging power Y to the USB-C interface of the first connected external device 40, and allocate a third charging power Z to the USB-C interface of the second connected external device 40. Among them, the second charging power Y and the third charging power Z can be equal or not equal. The sum of the second charging power Y and the third charging power Z can be less than the first charging power X, greater than the first charging power X, or equal to the first charging power X according to needs, and no specific limitation is made here. Subsequently, the control module 30 charges the two external devices 40 respectively according to the power allocation result.

[0056] Optionally, if two external devices 40 are currently connected and then one of the external devices 40 is disconnected, the control module 30 will re-perform set power allocation for the connected external devices 40 when it identifies that the number of connected external devices 40 has decreased.

[0057] Figure 2 It is a structural diagram of another display device provided by an embodiment of the present invention.

[0058] Optionally, as Figure 2 shown, the control module 30 includes a USB PD protocol unit 31 and a video processing unit 32;

[0059] The USB PD protocol unit 31 is electrically connected to the first USB-C interface 10, the second USB-C interface 20, and the video processing unit 32 respectively. The USB PD protocol unit is configured to transmit the plug-and-play signal of the USB-C interface accessing the external device to the video processing unit 32; the video processing unit 32 is electrically connected to the first USB-C interface 10, the second USB-C interface 20, and the video processing unit 32 respectively. The video processing unit 32 is configured to obtain the video data signal of the target USB-C interface based on the plug-and-play signal for screen mirroring.

[0060] Specifically, USB PD (USB Power Delivery) is a power transmission concept proposed after USB3.2 Gen2. The USB PD protocol unit 31 controls the first USB-C interface 10 and the second USB-C interface 20 based on the USB PD protocol to achieve the transmission of corresponding data signals.

[0061] The USB PD protocol unit 31 is respectively connected to the CC (Configuration Channel) end of the first USB-C interface 10 and the CC end of the second USB-C interface 20. When an external device 40 is connected to the first USB-C interface 10 or the second USB-C interface 20, the USB PD protocol unit 31 can communicate with the first external device 41 connected to the first USB-C interface 10 and the second external device 42 connected to the second USB-C interface 20, and send the obtained plug-and-play signals of the first USB-C interface 10 and the second USB-C interface 20 to the video processing module 32.

[0062] Among them, for the USB-C interface, in terms of the appearance structure, there is no difference between plugging in forward and backward. However, for the connection of each signal terminal inside the interface, there is still a need to identify plugging in forward and backward. Therefore, the USB PD protocol unit 31 can identify the plug-and-play signal of the external device 40 connected through the first USB-C interface 10 or the second USB-C interface 20, and transmit the signal to the video processing module 32, so that the video processing module 32 can obtain the video data signal of the external device 40 through the USB-C interface based on the plug-and-play signal and perform extended screen mirroring.

[0063] Optionally, asFigure 2 As shown, the display device further includes a power supply module 60; the power supply module 60 is electrically connected to the first USB-C interface 10, the second USB-C interface 20, the USB PD protocol unit 31, and the video processing unit 32 respectively.

[0064] The power supply module 60 is used to supply power to the USB PD protocol unit 31 and the video processing unit 32, and charge the external device 40 connected to the first USB-C interface 10 and the second USB-C interface 20 based on the power distribution result.

[0065] The USB PD protocol unit 31 is further configured to set the charging power distribution based on the number and sequence of the external devices 40 connected to the two USB-C interfaces, and obtain the power distribution result.

[0066] Specifically, after determining that one or two external devices 40 are connected to the display device, the USB PD protocol unit 31 sets the charging power distribution based on the determined number and connection sequence of the external devices 40, and sends the obtained power distribution result to the feedback terminal of the power supply module 60 in the form of a feedback signal, so that the power supply module 60 can charge the external device 40 based on the received power distribution result.

[0067] Optionally, as Figure 2 shown, the display device further includes a first switch module 51 and a second switch module 52.

[0068] The first USB-C interface 10 is electrically connected to the power supply module 60 through the first switch module 51, and the first switch module 51 is used to close under the control of the USB PD protocol unit 31, so that the power supply module 60 charges the external device 40 connected to the first USB-C interface 10 based on the power distribution result.

[0069] The second USB-C interface 20 is electrically connected to the power supply module 60 through the second switch module 52, and the second switch module 52 is used to close under the control of the USB PD protocol unit 31, so that the power supply module 60 charges the external device 40 connected to the second USB-C interface 20.

[0070] The USB PD protocol unit 31 is electrically connected to the first switch module 51 and the second switch module 52 respectively, and the USB PD protocol unit 31 is further configured to control the switch module connected to the corresponding USB-C interface to close based on the received plug and unplug signal.

[0071] Specifically, refer to Figure 2, for the purpose of distinction, the external device 40 connected to the first USB-C interface 10 is named the first external device 41, and the external device 40 connected to the second USB-C interface 20 is named the second external device 42. The USB PD protocol unit 31 sends control signals to the first switch module 51 and / or the second switch module 52 based on the received plug-and-play signal, so that the corresponding switch module closes, and the power supply module 60 charges the corresponding external device 40.

[0072] Optionally, as Figure 2 shown, the display device further includes a display module 70; the display module 70 is electrically connected to the video processing unit 32 and is used to project and display the video data signal of the target USB-C interface under the control of the video processing unit 32.

[0073] Optionally, as Figure 2 shown, the display device further includes a power interface 61, and the power supply module 60 is electrically connected to an external power supply through the power interface 61.

[0074] Optionally, the first USB-C interface 10 and the second USB-C interface 20 are communicatively connected.

[0075] Specifically, the first USB-C interface 10 and the second USB-C interface 20 can realize the transmission of USB2.0 data under the control of the USB PD protocol unit 31, that is, realize the data transmission between the first external device 41 and the second external device 42, further simplifying the user's data transmission operation and meeting the different needs of the user.

[0076] Optionally, as Figure 2 shown, the display device further includes other interface modules 80;

[0077] The other interface modules 80 are respectively electrically connected to the control module 30 and the power supply module 60; the other interface modules 80 include at least one of the following: High Definition Multimedia Interface (HDMI), DisplayPort (DP), USB-A interface, and hub interface (HUB).

[0078] Next, a specific embodiment is used to illustrate the situation where the control module sets power distribution when different numbers of external devices are connected to the two USB-C interfaces.

[0079] Figure 3 is the logic flowchart of the control module for setting power distribution provided by the embodiment of the present invention.

[0080] S301, the power-on initialization of the display device is completed;

[0081] S302, determine whether a first external device 41 is connected to the first USB-C interface 10. If so, execute S303; if not, execute S308;

[0082] S303, the USB PD protocol unit 31 turns on the first switch module 51, controls the power supply module 60 to charge the first external device 41 at a first charging power X, and the video processing unit 32 performs screen mirroring based on the video data signal of the first external device 41;

[0083] S304, determine whether a second external device 42 is connected to the second USB-C interface 20. If so, execute S305; if not, execute S313;

[0084] S305, the USB PD protocol unit 31 turns on the second switch module 52, configures the power supply module 60 to charge the first external device 41 at a second charging power Y and charge the second external device 42 at a third charging power Z, and the video processing unit 32 performs screen mirroring based on the video data signal of the first external device 41 that was connected first;

[0085] S306, determine whether the first external device 41 connected to the first USB-C interface 10 is disconnected. If so, execute S307; if not, execute S314;

[0086] S307, the USB PD protocol unit 31 configures the power supply module 60 to charge the second external device 42 at a first charging power X, and the video processing unit 32 performs screen mirroring based on the video data signal of the currently connected second external device 42, and then execute S310 (i.e., Figure 3 the actions performed by item 3 in

[0087] S308, determine whether a second external device 42 is connected to the second USB-C interface 20. If so, execute S309; if not, execute S302;

[0088] S309, the USB PD protocol unit 31 turns on the second switch module 52, controls the power supply module 60 to charge the second external device 42 at a first charging power X, and the video processing unit 32 performs screen mirroring based on the video data signal of the second external device 42;

[0089] S310, determine whether a first external device 41 is connected to the first USB-C interface 10. If so, execute S311; if not, execute S312;

[0090] S311, the USB PD protocol unit 31 turns on the first switch module 51, configures the power supply module 60 to charge the second external device 42 with the second charging power Y and charge the first external device 41 with the third charging power Z. The video processing unit 32 performs screen mirroring based on the video data signal of the second external device 42 that is connected first, and then executes S306 (i.e., Figure 3 the actions performed by serial number 2 in

[0091] S312, determine whether the second external device 42 connected to the second USB-C interface 20 is disconnected. If so, re-execute S302. If not, re-execute S310;

[0092] S313, determine whether the first external device 41 connected to the first USB-C interface 10 is disconnected. If so, re-execute S302. If not, re-execute S304;

[0093] S314, determine whether the second external device 42 connected to the second USB-C interface 20 is disconnected. If so, execute S315. If not, re-execute S306;

[0094] S315, the USB PD protocol unit 31 configures the power supply module 60 to charge the first external device 42 with the first charging power X. The video processing unit 32 performs screen mirroring based on the video data signal of the currently connected first external device 41, and then repeats the execution of S304 (i.e., Figure 3 the actions performed by serial number 1 in

[0095] The embodiment of the present invention also provides an electronic device, and this electronic device includes the display device in any of the above embodiments.

[0096] The electronic device provided by the embodiment of the present invention includes the display device in the above embodiment. Therefore, the electronic device provided by the embodiment of the present invention also has the beneficial effects described in the above embodiment, which will not be elaborated here.

[0097] In the description of the embodiment of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0098] Finally, it should be noted that the above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display device, characterized in that: The display device includes a first USB-C interface, a second USB-C interface and a control module; The first USB-C interface and the second USB-C interface are both electrically connected to the control module; the first USB-C interface and the second USB-C interface are both used to access external devices; The control module is configured to set charging power distribution based on the number and order of external devices connected to the two USB-C interfaces, and charge the connected external devices according to the power distribution result; The control module is also configured to determine the target USB-C interface based on the number and order of connected external devices, and to perform screen projection based on the video data signal transmitted from the target USB-C interface, wherein the target USB-C interface is any one of the USB-C interface and the second USB-C interface.

2. The display device according to claim 1, characterized in that The control module is configured to: When the number of connected external devices is 1, determining the USB-C interface connected to the external device between the first USB-C interface and the second USB-C interface as the target USB-C interface; When the number of connected external devices is 2, the USB-C interface that is first connected to the external device between the first USB-C interface and the second USB-C interface is determined as the target USB-C interface.

3. The display device according to claim 1, characterized in that The control module is configured to: When the number of connected external devices is 1, allocating a first charging power to the USB-C interface connected to the external device among the first USB-C interface and the second USB-C interface; When the number of connected external devices is 2, the second charging power is allocated to the USB-C interface that is first connected to the external device between the first USB-C interface and the second USB-C interface, and the third charging power is allocated to the USB-C interface that is later connected to the external device.

4. The display device according to claim 1, characterized in that The control module includes a USB PD protocol unit and a video processing unit; The USB PD protocol unit is electrically connected to the first USB-C interface, the second USB-C interface, and the video processing unit respectively, and the USB PD protocol unit is configured to transmit a forward and reverse insertion signal of the USB-C interface connected to an external device to the video processing unit; The video processing unit is electrically connected to the first USB-C interface and the second USB-C interface respectively, and the video processing unit is configured to obtain the video data signal of the target USB-C interface based on the forward and reverse plug signals for screen projection.

5. The display device according to claim 4, characterized in that The display device also includes a power module; The power module is electrically connected to the first USB-C interface, the second USB-C interface, the USB PD protocol unit, and the video processing unit respectively; The power module is used to supply power to the USB PD protocol unit and the video processing unit, and to charge external devices connected to the first USB-C interface and the second USB-C interface based on the power allocation result; The USB PD protocol unit is also configured to set charging power distribution based on the number and order of external devices connected to the two USB-C interfaces to obtain the power distribution result.

6. The display device according to claim 5, characterized in that The display device further includes a first switch module and a second switch module; The first USB-C interface is electrically connected to the power module through the first switch module, and the first switch module is used to be closed under the control of the USB PD protocol unit, so that the power module charges the external device connected to the first USB-C interface based on the power allocation result; The second USB-C interface is electrically connected to the power module through the second switch module, and the second switch module is used to be closed under the control of the USB PD protocol unit so that the power module charges the external device connected to the second USB-C interface; The USB PD protocol unit is electrically connected to the first switch module and the second switch module respectively, and the USB PD protocol unit is also configured to control the switch module connected to the corresponding USB-C interface to close based on the received forward and reverse plug signals.

7. The display device according to claim 4, characterized in that The display device also includes a display module; The display module is electrically connected to the video processing unit and is used for projecting and displaying the video data signal of the target USB-C interface under the control of the video processing unit.

8. The display device according to claim 5, characterized in that The display device also includes a power supply interface, and the power supply module is electrically connected to an external power supply via the power supply interface.

9. The display device according to claim 1, characterized in that: The first USB-C interface is communicatively connected to the second USB-C interface.

10. An electronic device, characterized in that: The electronic device comprises the display device according to any one of claims 1 to 9.

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