CN217405088U - Display circuit and display device - Google Patents
Display circuit and display device Download PDFInfo
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- CN217405088U CN217405088U CN202220349880.3U CN202220349880U CN217405088U CN 217405088 U CN217405088 U CN 217405088U CN 202220349880 U CN202220349880 U CN 202220349880U CN 217405088 U CN217405088 U CN 217405088U
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Abstract
The utility model provides a display circuit, include: a control circuit for outputting a control signal; the USB interface is electrically connected with the control circuit and is used for receiving a first external signal, and the first external signal is a DP signal or a USB2.0 signal; the signal conversion circuit is electrically connected with the first USB interface and is used for converting the USB2.0 signal into a display signal; and the display component is respectively electrically connected with the control circuit, the first USB interface and the signal conversion circuit, is triggered to work by the control signal, and receives the DP signal or the display signal for displaying. The utility model discloses can make when equipment does not support USB PD agreement or does not support DP signal transmission, the display also can show, improves and shows compatibility.
Description
Technical Field
The utility model belongs to the technical field of the display circuit, especially, relate to a display circuit and display device.
Background
Currently, in order to better view the screen content of a smart phone or a computer, many displays are available for connecting to the smart phone or the computer. In the existing mainstream USB Type-C Display, a USB PD (Power Delivery) protocol unit multiplexes a USB-C interface into a DP (Display Port) Alternate Mode through communication of a USB PD protocol, so that a DP signal is transmitted to a Display processing unit for driving and displaying.
Traditional USB Type-C smart phones or computers support USB2.0 signals, but not all USB Type-C smart phones or computers support USB PD protocol or DP signal transmission. Therefore, for a USB Type-C smart phone or a computer which does not support a USB PD protocol or DP signal transmission, the existing USB Type-C display cannot be projected to display.
Therefore, the problem that the existing USB Type-C display cannot be used for screen projection display of a USB Type-C smart phone or a computer which does not support a USB PD protocol or DP signal transmission exists in the traditional technical scheme.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a display circuit and display device aims at solving the unable problem that lets that does not support USB PD agreement or does not support DP signal transmission's USB Type-C smart mobile phone or computer to throw the screen display that exists of traditional USB Type-C display.
The utility model discloses a first aspect of the embodiment provides a display circuit, display circuit includes:
a control circuit for outputting a control signal;
the USB interface is electrically connected with the control circuit and is used for receiving a first external signal, and the first external signal is a DP signal or a USB2.0 signal;
the signal conversion circuit is electrically connected with the first USB interface and is used for converting the USB2.0 signal into a display signal;
and the display component is electrically connected with the control circuit, the first USB interface and the signal conversion circuit respectively, is triggered to work by the control signal, and receives the DP signal or the display signal for displaying.
In one embodiment, the first USB interface is a USB Type-C interface.
In one embodiment, the display assembly comprises:
the display processing circuit is electrically connected with the control circuit, the first USB interface and the signal conversion circuit respectively, and is used for receiving the DP signal or the display signal and outputting a display driving signal;
and the display panel is electrically connected with the display processing circuit and is used for receiving the display driving signal and displaying.
In one embodiment, the display circuitry further comprises:
the first switch is electrically connected with the first USB interface and the control circuit respectively and is triggered to be switched on or switched off by the control signal;
and the second switch is electrically connected with the first switch, the signal conversion circuit and the control circuit respectively, and is triggered to be switched on or switched off by the control signal.
In one embodiment, the display circuit further includes a second USB interface, and the second USB interface is electrically connected to the first switch and the second switch respectively, and is configured to receive a second external signal, where the second external signal is a USB2.0 signal.
In one embodiment, the second USB interface is a USB Type-a interface or a USB Type-B interface.
In one embodiment, the display circuitry further comprises:
the concentrator is electrically connected with the second switch;
the third switch is connected between the hub and the first USB interface, is electrically connected with the control circuit and is triggered to be switched on or switched off by the control signal;
and the second USB interface is electrically connected with the concentrator and is used for receiving a second external signal, and the second external signal is a USB2.0 signal.
In one embodiment, the second USB interface is a USB Type-a interface or a USB Type-B interface.
In one embodiment, the display circuit further includes a power interface electrically connected to the control circuit.
A second aspect of the embodiments of the present invention provides a display device, which includes the display circuit as described above.
Compared with the prior art, the embodiment of the utility model beneficial effect who exists is: according to the display circuit, the signal conversion circuit is additionally arranged and is electrically connected with the first USB interface and the display component respectively, so that when equipment does not support a USB PD protocol or DP signal transmission, a display can display, and display compatibility is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a first structure of a display circuit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second structure of a display circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a third structure of a display circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a fourth structure of a display circuit according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a fifth structure of a display circuit according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a sixth structure of a display circuit according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a seventh structure of a display circuit according to an embodiment of the present invention;
fig. 8 is an eighth schematic structural diagram of a display circuit according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a ninth structure of a display circuit according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example one
The present embodiment provides a display circuit, as shown in fig. 1, the display circuit 10 includes:
a control circuit 11, the control circuit 11 being configured to output a control signal;
at least one first USB interface 12, where the USB interface 12 is electrically connected to the control circuit 11, and is configured to receive a first external signal, such as a signal of a smart phone or a computer, where the first external signal is a DP (Display Port) signal or a USB2.0 signal;
the signal conversion circuit 13, the signal conversion circuit 13 is electrically connected to the first USB interface 12, and is configured to convert the USB2.0 signal into a display signal;
and the display component 14 is electrically connected with the control circuit 11, the first USB interface 12 and the signal conversion circuit 13 respectively, is triggered by the control signal to work, and receives the DP signal or the display signal to display.
In this embodiment, it should be noted that the control circuit 11 may be a single chip, a chip, or the like, optionally, the control circuit 11 is a chip, such as a USB PD (Power Delivery) protocol unit, which can output a control signal to control the display circuit, the number of the first USB interfaces 12 includes one or more, and the first USB interfaces are electrically connected to the control circuit 11 and transmit the first external signal to the control circuit 11, optionally, the number of the first USB interfaces 12 is one, the first USB Interface 12 may be any USB Interface capable of receiving a DP signal or a USB2.0 signal, optionally, the first USB Interface 12 is a USB Type-C Interface, the signal conversion circuit 13 may convert a USB2.0 signal into a display signal, such as an HDMI (High Definition Multimedia Interface, Multimedia Interface) signal, the display component 14 may be a display screen and a driving circuit, and is electrically connected to the control circuit 11 and triggered by the control signal to operate.
When the control circuit 11 determines that the first USB interface 12 receives a DP signal, the first USB interface 12 directly transmits the DP signal to the display module 14 for displaying, and when the control circuit 11 determines that the first USB interface 12 receives a USB2.0 signal, the first USB interface 12 transmits the USB2.0 signal to the signal conversion circuit 13, and the signal conversion circuit 13 converts the USB2.0 signal into the display signal and then transmits the display signal to the display module 14 for displaying.
By adding the signal conversion circuit 13, the signal conversion circuit 13 is electrically connected with the first USB interface 12 and the display component 14, respectively, so that when the device does not support the USB PD protocol or does not support DP signal transmission, the display can display, and display compatibility is improved.
Optionally, as shown in fig. 2, the display assembly 14 includes:
the display processing circuit 141, the display processing circuit 141 is electrically connected to the control circuit 11, the first USB interface 12, and the signal conversion circuit 13, respectively, and is configured to receive the DP signal or the display signal and output a display driving signal;
and the display panel 142 is electrically connected to the display processing circuit 141, and the display panel 142 is configured to receive the display driving signal and perform display.
In this embodiment, it should be noted that when the first USB interface 12 receives a DP signal, the display processing circuit 141 receives the DP signal, and when the first USB interface 12 receives a USB2.0 signal, the display processing circuit 141 receives the display signal, and the display panel may be any display screen.
By arranging the display processing circuit 141 and the display panel 142, the display processing circuit 141 receives the DP signal or the display signal and outputs a display driving signal to the display panel 142 for displaying, thereby implementing a display function.
Optionally, as shown in fig. 3, the display circuit 10 further includes:
the first switch 15, the first switch 15 is electrically connected to the first USB interface 12 and the control circuit 11, and is triggered to turn on or off by the control signal;
and a second switch 16 electrically connected to the first switch 15, the signal conversion circuit 13, and the control circuit 11, respectively, wherein the second switch 16 is triggered by the control signal to be turned on or off.
In this embodiment, it should be noted that the first switch 15 and the second switch 16 are respectively electrically connected to the control circuit 11, and the first switch 15 and the second switch 16 are triggered to be turned on or off by the control signal.
When the first USB interface receives a DP signal, the first switch 15 and the second switch 16 are turned off, the first USB interface 12 directly transmits the DP signal to the display module 14 for displaying, when the first USB interface 12 receives a USB2.0 signal, the first switch 15 and the second switch 16 are turned on, the first USB interface 12 transmits the USB2.0 signal to the first switch 15 and the second switch 16, and then to the signal conversion circuit 13, and the signal conversion circuit 13 converts the USB2.0 signal into a display signal and then transmits the display signal to the display module 14 for displaying.
By arranging the first switch 15 and the second switch 16, the display circuit 10 can select different paths to transmit to the display component 14 when the first USB interface 12 receives different signals, thereby ensuring the display function.
Optionally, as shown in fig. 4, the display circuit 10 further includes a second USB interface 17, where the second USB interface 17 is electrically connected to the first switch 15 and the second switch 16, respectively, and is configured to receive a second external signal, such as a signal of a mouse or a keyboard, where the second external signal is a USB2.0 signal.
In this embodiment, it should be noted that the second USB interface 17 may be a USB interface for receiving any USB2.0 Type signal, and optionally, the second USB interface 17 is a USB Type-a interface or a USB Type-B interface.
When the first USB interface 12 receives a DP signal, the second USB interface 17 can be used as an extension of the USB2.0 signal of the first USB interface 12 to connect to peripheral devices such as a mouse and a keyboard, and at this time, the first switch 15 and the second switch 16 are turned on, the second USB interface 17 receives a USB2.0 signal and then transmits the USB2.0 signal to the second switch 16 and then to the signal conversion circuit 13, and when the first USB interface 12 receives a USB2.0 signal, the first USB interface 12 transmits a USB2.0 signal to the first switch 15 and the second switch 16 and then to the signal conversion circuit 13, and at this time, the second USB interface 17 is disabled.
By providing the second USB interface 17, the second USB interface 17 can be used as an extension of the USB2.0 signal when the first USB interface 12 receives the DP signal, thereby increasing the functions of the display circuit 10.
Optionally, as shown in fig. 5, the display circuit 10 further includes a power interface 18, and the power interface 18 is electrically connected to the control circuit 11.
In this embodiment, it should be noted that the power interface 18 may be any USB interface, which can be used for an external charging power supply to supply power to the display circuit.
Through setting up power source 18, can be for the display circuit supplies power, ensure that the display circuit realizes the display function.
In the display circuit 10 provided in this embodiment, by adding the signal conversion circuit 13, and electrically connecting the signal conversion circuit 13 with the first USB interface 12 and the display component 14, respectively, it is possible to enable a display to display when a device does not support a USB PD protocol or does not support DP signal transmission, thereby improving display compatibility.
Example two
The present embodiment provides a display circuit, as shown in fig. 6, the display circuit 10 includes:
a control circuit 11, wherein the control circuit 11 is used for outputting a control signal;
at least one first USB interface 12, where the USB interface 12 is electrically connected to the control circuit 11, and is configured to receive a first external signal, such as a smart phone or a computer signal, where the first external signal is a DP (Display Port) signal or a USB2.0 signal;
the signal conversion circuit 13 is electrically connected to the first USB interface 12, and is configured to convert the USB2.0 signal into a display signal;
and the display component 14 is electrically connected with the control circuit 11, the first USB interface 12 and the signal conversion circuit 13 respectively, is triggered by the control signal to work, and receives the DP signal or the display signal to display.
In this embodiment, it should be noted that the control circuit 11 may be a single chip, a chip, or the like, optionally, the control circuit 11 is a chip, such as a USB PD (Power Delivery) protocol unit, which can output a control signal to control the display circuit, the number of the first USB interfaces 12 includes one or more, and the first USB interfaces are electrically connected to the control circuit 11 and transmit the first external signal to the control circuit 11, optionally, the number of the first USB interfaces 12 is two, the first USB Interface 12 may be any USB Interface capable of receiving a DP signal or a USB2.0 signal, optionally, the first USB Interface 12 is a USB Type-C Interface, the signal conversion circuit 13 may convert a USB2.0 signal into a display signal, such as an HDMI (High Definition Multimedia Interface, Multimedia Interface) signal, the display component 14 may be a display screen and a driving circuit, and is electrically connected to the control circuit 11 and triggered by the control signal to operate.
When the first USB interface 12 receives a DP signal, the first USB interface 12 directly transmits the DP signal to the display module 14 for displaying, and when the first USB interface 12 receives a USB2.0 signal, the first USB interface 12 transmits the USB2.0 signal to the signal conversion circuit 13, and the signal conversion circuit 13 converts the USB2.0 signal into the display signal and transmits the display signal to the display module 14 for displaying.
By adding the signal conversion circuit 13, the signal conversion circuit 13 is electrically connected with the first USB interface 12 and the display component 14, respectively, so that when the device does not support the USB PD protocol or does not support DP signal transmission, the display can display, and display compatibility is improved.
Alternatively, as shown in fig. 7, the display assembly 14 includes:
the display processing circuit 141, the display processing circuit 141 is electrically connected to the control circuit 11, the first USB interface 12, and the signal conversion circuit 13, respectively, and is configured to receive the DP signal or the display signal and output a display driving signal;
and the display panel 142 is electrically connected to the display processing circuit 141, and the display panel 142 is configured to receive the display driving signal and perform display.
In this embodiment, it should be noted that when the first USB interface 12 receives a DP signal, the display processing circuit 141 receives the DP signal, and when the first USB interface 12 receives a USB2.0 signal, the display processing circuit 141 receives the display signal, and the display panel may be any display screen.
By arranging the display processing circuit 141 and the display panel 142, the display processing circuit 141 receives the DP signal or the display signal and outputs a display driving signal to the display panel 142 for displaying, thereby implementing a display function.
Optionally, as shown in fig. 8, the display circuit 10 further includes:
the first switch 15, the first switch 15 is electrically connected to the first USB interface 12 and the control circuit 11, and is triggered to turn on or off by the control signal;
and a second switch 16 electrically connected to the first switch 15, the signal conversion circuit 13, and the control circuit 11, respectively, wherein the second switch 16 is triggered by the control signal to be turned on or off.
In this embodiment, it should be noted that the first switch 15 and the second switch 16 are respectively electrically connected to the control circuit 11, and the first switch 15 and the second switch 16 are triggered to be turned on or off by the control signal.
When the first USB interface receives a DP signal, the first switch 15 and the second switch 16 are turned off, the first USB interface 12 directly transmits the DP signal to the display module 14 for displaying, when the first USB interface 12 receives a USB2.0 signal, the first switch 15 and the second switch 16 are turned on, the first USB interface 12 transmits the USB2.0 signal to the first switch 15 and the second switch 16, and then to the signal conversion circuit 13, and the signal conversion circuit 13 converts the USB2.0 signal into a display signal and then transmits the display signal to the display module 14 for displaying.
By arranging the first switch 15 and the second switch 16, the display circuit 10 can select different paths to transmit to the display component 14 when the first USB interface 12 receives different signals, thereby ensuring the display function.
Optionally, as shown in fig. 9, the display circuit 10 further includes:
a hub 19, wherein the hub 19 is electrically connected to the second switch 16;
a third switch 110 connected between the hub 19 and the first USB interface 12, wherein the third switch 110 is further electrically connected to the control circuit 11 and is triggered to be turned on or off by the control signal;
and a second USB interface 17 electrically connected to the hub 19, wherein the second USB interface 17 is configured to receive a second external signal, and the second external signal is a USB2.0 signal.
In this embodiment, it should be noted that the second USB interface 17 may be a USB interface for receiving any USB2.0 Type signal, optionally, the second USB interface 17 is a USB Type-a interface or a USB Type-B interface, and the HUB 19 may be a HUB chip such as a USB2.0 HUB chip.
When the first USB interface 12 receives a DP signal, the second USB interface 17 can be used as an extension of a USB2.0 signal of the first USB interface 12 to connect to peripheral devices such as a mouse and a keyboard, and at this time, the first switch 15 and the second switch 16 are turned on, the second USB interface 17 receives a USB2.0 signal and then transmits the USB2.0 signal to the hub 19 and then to the second switch 16 and the signal conversion circuit 13, and when the first USB interface 12 receives a USB2.0 signal, the third switch 110 is turned on, the first USB interface 12 transmits a USB2.0 signal to the third switch 110 and the hub 19 and then to the second switch 16 and the signal conversion circuit 13, and at this time, the second USB interface 17 is disabled.
By providing the second USB interface 17, the second USB interface 17 can be used as an extension of the USB2.0 signal when the first USB interface 12 receives the DP signal, thereby increasing the functions of the display circuit 10.
In the display circuit 10 provided in this embodiment, by adding the signal conversion circuit 13, and electrically connecting the signal conversion circuit 13 with the first USB interface 12 and the display component 14, when the device does not support USB PD protocol or DP signal transmission, the display can also display, and display compatibility is improved.
EXAMPLE III
As shown in fig. 10, the display device 1 includes a display circuit 10, and the specific structure of the display circuit 10 refers to the foregoing embodiments, and since the display device 1 adopts the technical solution of one or more of the foregoing embodiments, the display device at least has the beneficial effects brought by the technical solutions of the foregoing embodiments, and details are not repeated herein.
In this embodiment, the display device 1 may be a display, a projector, or the like, and the specific structure is not limited, and the display device 1 is connected to a smart phone, a computer, or the like, and when the device does not support the USB PD protocol or does not support DP signal transmission, the display device 1 may also display, thereby improving display compatibility.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A display circuit, wherein the display circuit comprises:
a control circuit for outputting a control signal;
the USB interface is electrically connected with the control circuit and is used for receiving a first external signal, and the first external signal is a DP signal or a USB2.0 signal;
the signal conversion circuit is electrically connected with the first USB interface and is used for converting the USB2.0 signal into a display signal;
and the display component is respectively electrically connected with the control circuit, the first USB interface and the signal conversion circuit, is triggered to work by the control signal, and receives the DP signal or the display signal for displaying.
2. The display circuit of claim 1, wherein the first USB interface is a USB Type-C interface.
3. A display circuit as claimed in claim 1, wherein the display assembly comprises:
the display processing circuit is electrically connected with the control circuit, the first USB interface and the signal conversion circuit respectively, and is used for receiving the DP signal or the display signal and outputting a display driving signal;
and the display panel is electrically connected with the display processing circuit and is used for receiving the display driving signal and displaying.
4. A display circuit as claimed in claim 1, wherein the display circuit further comprises:
the first switch is electrically connected with the first USB interface and the control circuit respectively and is triggered to be switched on or switched off by the control signal;
and the second switch is electrically connected with the first switch, the signal conversion circuit and the control circuit respectively, and is triggered to be switched on or switched off by the control signal.
5. The display circuit according to claim 4, wherein the display circuit further comprises a second USB interface, the second USB interface is electrically connected to the first switch and the second switch respectively, and is configured to receive a second external signal, and the second external signal is a USB2.0 signal.
6. The display circuit of claim 5, wherein the second USB interface is a USB Type-A interface or a USB Type-B interface.
7. The display circuit of claim 4, wherein the display circuit further comprises:
the concentrator is electrically connected with the second switch;
the third switch is connected between the concentrator and the first USB interface, is electrically connected with the control circuit and is triggered to be switched on or switched off by the control signal;
and the second USB interface is electrically connected with the concentrator and is used for receiving a second external signal, and the second external signal is a USB2.0 signal.
8. The display circuit of claim 7, wherein the second USB interface is a USB Type-A interface or a USB Type-B interface.
9. The display circuit of claim 1, further comprising a power interface, wherein the power interface is electrically connected to the control circuit.
10. A display device comprising the display circuit according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220349880.3U CN217405088U (en) | 2022-02-21 | 2022-02-21 | Display circuit and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220349880.3U CN217405088U (en) | 2022-02-21 | 2022-02-21 | Display circuit and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117156190A (en) * | 2023-04-21 | 2023-12-01 | 荣耀终端有限公司 | Screen projection management method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117156190A (en) * | 2023-04-21 | 2023-12-01 | 荣耀终端有限公司 | Screen projection management method and device |
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