CN220731147U - Display module driving circuit, display device and display equipment - Google Patents
Display module driving circuit, display device and display equipment Download PDFInfo
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Abstract
The application relates to the technical field of display equipment and discloses a display module driving circuit, a display device and display equipment, the display module driving circuit includes: the electronic device comprises a first microprocessor, a signal conversion module, a first display module and a second display module, wherein a first output port of the first microprocessor is connected with a signal input port of the first display module, a second output port of the first microprocessor is connected with an input port of the signal conversion module, an output port of the signal conversion module is connected with a signal input port of the second display module, and signal types corresponding to the first output port and the second output port are different, so that the first display module and the second display module can be driven through the first microprocessor and the signal conversion module, the number of driving circuits is reduced, the cost of the electronic device is reduced, and the practicability is improved.
Description
Technical Field
The application relates to the technical field of display equipment, in particular to a display module driving circuit, a display device and display equipment.
Background
Existing electronic devices typically support only one display, e.g., electronic devices such as cell phones. With the increase of user demands, the demands for large screens of electronic devices are increasing. One display screen is often unable to meet the user's needs, and therefore, in the case of a large screen display, a plurality of display screens are often used for display. In the prior art, in order to support two display screens, a main board of an electronic device generally needs to set a driving circuit corresponding to each display screen, and the cost of a display module of the electronic device is high due to the increase of the driving circuit.
Disclosure of Invention
An object of the embodiment of the application is to provide a display module driving circuit, a display device and a display device, to reduce the cost of a display screen and to improve the practicability of the display screen.
In a first aspect, an embodiment of the present application provides a display module driving circuit, applied to an electronic device, including: the first microprocessor, the signal conversion module, the first display module and the second display module, wherein,
the first output port of the first microprocessor is connected with the signal input port of the first display module, the second output port of the first microprocessor is connected with the input port of the signal conversion module, the output port of the signal conversion module is connected with the signal input port of the second display module, and the signal types corresponding to the first output port and the second output port are different;
the first microprocessor is configured to transmit a first video signal carrying a first sub-information in the information to be displayed to the first display module through the first output port, and transmit a second video signal carrying a second sub-information in the information to be displayed to the signal conversion module through the second output port;
the signal conversion module is configured to convert the second video signal into a third video signal, and transmit the third video signal to the second display module, where a signal type of the third video signal is the same as a signal type of the first video signal;
the first display module is used for receiving the first video signal and displaying first sub-information carried in the first video signal;
the second display module is configured to receive the third video signal and display second sub-information carried in the third video signal.
In one possible implementation manner, the signal type corresponding to the first output port is edp signal type, and the signal type corresponding to the second output port is mbi signal type.
In one possible implementation, the signal conversion module includes a second microprocessor and a first peripheral circuit including a first resistor, a second resistor, a first capacitor, and a second capacitor, wherein,
the first end of the first resistor is connected with the first end of the second resistor, the first port of the second microprocessor and the first end of the first capacitor, the second end of the first resistor is connected with the first end of the second resistor, the first end of the second capacitor, the second port of the second microprocessor and the first end of the second capacitor, and the second end of the first capacitor is grounded after being connected with the second end of the second capacitor;
the M IPI signal port of the second microprocessor is connected with the second output port of the first microprocessor, and the edp signal port of the second microprocessor is connected with the second display module.
In one possible implementation, the second display module includes a display screen and a first filter circuit including a third capacitor, a fourth capacitor, a third resistor, and a fourth resistor, wherein,
the first audio input port of the display screen is connected with the first end of the third capacitor and the first end of the third resistor, the second end of the third resistor is grounded, and the second end of the third capacitor is connected with the first audio output port of the second microprocessor;
the second audio input port of the display screen is connected with the first end of the fourth capacitor and the first end of the fourth resistor, the second end of the fourth resistor is connected with the first input power supply port, and the second end of the fourth capacitor is connected with the second audio output port of the second microprocessor.
In one possible implementation manner, the second display module further includes a fifth capacitor and a sixth capacitor, where a first end of the fifth capacitor is connected to the first end of the sixth capacitor, the second input power port, and the first power port of the display screen, and a second end of the fifth capacitor is connected to the second end of the sixth capacitor and then grounded.
In one possible implementation, the first microprocessor includes an RK3568 chip and the second microprocessor includes an LT8911 EXB chip.
In one possible implementation manner, the information to be displayed includes a first image, the first sub-information includes a first sub-image, the second sub-information includes a second sub-image, and the first sub-image and the second sub-image are spliced to form the first image.
In one possible implementation manner, the information to be displayed includes a first image, the first sub-information includes a first sub-image, the second sub-information includes a second sub-image, and the first sub-image and the second sub-image cannot be spliced to form the first image.
In a second aspect, embodiments of the present application provide a display device including a circuit board and a display module driving circuit as set forth in any one of the first aspects, the display module driving circuit being disposed on the circuit board.
In a third aspect, embodiments of the present application provide a display apparatus comprising a housing and a display device as described in the second aspect, the display device being disposed inside the housing.
The display module driving circuit provided in this embodiment of the present application includes a first microprocessor, a signal conversion module, a first display module and a second display module, where a first output port of the first microprocessor is connected to a signal input port of the first display module, a second output port of the first microprocessor is connected to an input port of the signal conversion module, an output port of the signal conversion module is connected to a signal input port of the second display module, types of signals corresponding to the first output port and the second output port are different, the first microprocessor is configured to transmit a first video signal carrying a first sub-information in information to be displayed to the first display module through the first output port, and transmit a second video signal carrying a second sub-information in the information to be displayed to the signal conversion module through the second output port, the signal conversion module is configured to convert the second video signal into a third video signal, and transmit the third video signal to the second display module, the types of signals are different from the first output port and the second output port are configured to the second microprocessor, and the first video signal carrying a second sub-information in information to be displayed is reduced, the first video signal and the second video signal carrying the second sub-information in the information to be displayed is transmitted to the first display module through the second output port, and the second video signal carrying the second sub-information in the information to be displayed is reduced, and the first video signal and the second video signal carrying the second sub-information in the information to be displayed, the practicability is improved.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a schematic structural diagram of a driving circuit of a conventional display module according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a driving circuit of a display module according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a signal conversion module according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a second display module according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of another second display module according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that, if not conflicting, the various features in the embodiments of the present application may be combined with each other, which is within the protection scope of the present application. In addition, while functional block division is performed in a device diagram and logical order is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. Moreover, the words "first," "second," "third," and the like as used herein do not limit the data and order of execution, but merely distinguish between identical or similar items that have substantially the same function and effect.
In order to better understand the display module driving circuit provided in the embodiment of the present application, first, a brief description is given of the display module driving circuit in the existing scheme. Fig. 1 shows a schematic diagram of a conventional display module driving circuit, as shown in fig. 1, which includes a microprocessor 1000, a microprocessor 2000, a display module 3000 and a display module 4000, wherein the microprocessor 1000 and the microprocessor 2000 are connected, the microprocessor 1000 is connected with the display module 3000, the microprocessor 2000 is connected with the display module 4000, the microprocessor 1000 and related peripheral circuits are used for driving the display module 3000 together, and the microprocessor 2000 and related peripheral circuits are used for driving the display module 4000 together, so that two driving circuits are used for driving the display module 3000 and the display module 4000 respectively for displaying information, and the cost of an electronic device with the display module driving circuit is high. In order to solve the above problems, the embodiment of the application provides a display module driving circuit, which drives a first display module and a second display module through a first microprocessor and a signal conversion module, so that the number of the driving circuits is reduced, the cost of electronic equipment is reduced, and the practicability is improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a driving circuit of a display module according to an embodiment of the present application. As shown in fig. 2, the display module driving circuit includes: a first microprocessor 1, a signal conversion module 2, a first display module 3 and a second display module 4, wherein,
the first output port of the first microprocessor 1 is connected with the signal input port of the first display module 3, the second output port of the first microprocessor 1 is connected with the input port of the signal conversion module 2, the output port of the signal conversion module 2 is connected with the signal input port of the second display module 4, and the signal types corresponding to the first output port and the second output port are different;
the first microprocessor 1 is configured to transmit a first video signal carrying a first sub-information in the information to be displayed to the first display module 3 through the first output port, and transmit a second video signal carrying a second sub-information in the information to be displayed to the signal conversion module 2 through the second output port;
the signal conversion module 2 is configured to convert the second video signal into a third video signal, and transmit the third video signal to the second display module 4, where a signal type of the third video signal is the same as a signal type of the first video signal;
the first display module 3 is configured to receive the first video signal and display first sub-information carried in the first video signal;
the second display module 4 is configured to receive the third video signal and display second sub-information carried in the third video signal.
The first microprocessor 1 may be an RK3568 chip. The first display module 3 may include a display screen, which may be a edp (Embedded Display Port) display screen, and the display screen may be connected to the first output port of the first microprocessor 1, so as to receive the first sub-information in the information to be displayed sent by the first microprocessor 1.
The electronic device may support a dual-screen display function, i.e. different image contents are displayed on the first display module 3 and the second display module 4. Specifically, for example, when the information to be displayed is a first image, the first sub-information may be a first sub-image, the second sub-information may also be a second sub-image, the first sub-image may be an appearance image of a certain electronic device, the second sub-image may be an appearance image of another electronic device, and the first sub-image and the second sub-image cannot be spliced to form the first image. Of course, the electronic device may also support the function of dual-screen simultaneous display, and at this time, the first sub-image and the second sub-image may be spliced to form the first image, and specifically, the first sub-image and the second sub-image may be a first partial image and a second partial image in the first image, for example, the first sub-image and the second sub-image are images obtained by dividing the first image according to the areas of the display areas of the first display module 3 and the second display module 4.
The first microprocessor 1 may send the first sub-information carried in the first video signal to the first display module 3, the first display module 3 displays the first sub-information, and send the second sub-information carried in the second video signal to the second display module 4, and the second display module 4 displays the second sub-information, respectively.
The signal type corresponding to the first output port of the first microprocessor 1 is edp signal type, and the signal type corresponding to the second output port of the first microprocessor 1 is M IP I signal type. Because the display screen in the second display module 4 is a edp display screen, the M IPI video signal corresponding to the M IPI signal type needs to be converted into the edp video signal, and the signal type can be converted through the signal conversion module 2, so as to perform subsequent information display.
In one possible implementation, as shown in fig. 3, the signal conversion module 2 includes a second microprocessor 21 and a first peripheral circuit 22, the first peripheral circuit 22 including a first resistor R1, a second resistor R2, a first capacitor C1 and a second capacitor C2, wherein,
the first end of the first resistor R1 is connected to the first end of the second resistor R2, the first port of the second microprocessor 21, and the first end of the first capacitor C1, the second end of the first resistor R1 is connected to the first end of the second resistor R2, the first end of the second capacitor C2, the second port of the second microprocessor 21, and the first end of the second capacitor C2, and the second end of the first capacitor C1 is connected to the second end of the second capacitor C2 and then grounded;
the M IPI signal port of the second microprocessor 21 is connected to the second output port of the first microprocessor 1, and the edp signal port of the second microprocessor 21 is connected to the second display module 4.
The second microprocessor 21 may be an LT8911 EXB chip. The M IPI signal port of the second microprocessor 21 is connected to the second output port of the first microprocessor 1, and the edp signal port of the second microprocessor 21 is connected to the second display module 4, so that the second microprocessor 21 may receive the second video signal from the first microprocessor 1 through the M IPI signal port and convert the second video signal into a third video signal, where the signal type of the third video signal is the same as the signal type of the first video signal, specifically, the signal type of the third video signal is edp, and the signal type of the first video signal is edp.
In this example, the second video signal is converted into the third video signal, so that the third video signal can be sent to the second display module 4, and the second display module 4 can display information, so that the second display module 4 can be driven without providing a plurality of driving circuits, and the cost is reduced.
In one possible implementation, as shown in fig. 4, the second display module 4 includes a display screen 41 and a first filter circuit 42, where the first filter circuit 42 includes a third capacitor C3, a fourth capacitor C4, a third resistor R3 and a fourth resistor R4,
the first audio input port of the display screen 41 is connected to the first end of the third capacitor C3 and the first end of the third resistor R3, the second end of the third resistor R3 is grounded, and the second end of the third capacitor C3 is connected to the first audio output port V1 of the second microprocessor 21;
the second audio input port of the display 41 is connected to the first end of the fourth capacitor C4 and the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the first input power port, and the second end of the fourth capacitor C4 is connected to the second audio output port V2 of the second microprocessor 21.
The first audio input port may be an anode port for inputting an audio signal, and the second audio input port may be a cathode port for inputting an audio signal. Through setting up filter circuit, then can carry out filter processing to audio signal, promote subsequent bandwagon effect.
In one possible implementation manner, as shown in fig. 5, the second display module 4 further includes a fifth capacitor C5 and a sixth capacitor C6, where a first end of the fifth capacitor C5 is connected to the first end of the sixth capacitor C6, the second input power port, and the first power port of the display screen 41, and a second end of the fifth capacitor C5 is connected to the second end of the sixth capacitor C6 and then grounded.
The fifth capacitor C5 and the sixth capacitor C6 may also perform filtering processing, so as to provide a stable input power for the display screen 41, thereby improving the display stability.
The display device may display video data by a method in which a user may receive a first image to be displayed through the first display module 3 and the second display module 4 of the display device, and the user may operate on the display screen of the first display module 3 to display the first image. Specifically, part of the first image is displayed on the display screen of the first display module 3 and part of the first image is displayed on the display screen of the second display module 4 respectively, and finally, the display of the first image is realized. Of course, the user may also operate on the display screen of the first display module 3 to display different images on the first display module 3 and the second display module 4 for split-screen display, etc.
The embodiment of the application also provides a display device, which comprises a circuit board and the display module driving circuit according to any one of the previous embodiments, wherein the display module driving circuit is arranged on the circuit board.
The embodiment of the application also provides a display device, which comprises a shell and the display device in the previous embodiment, wherein the display device is arranged inside the shell.
The apparatus or device embodiments described above are merely illustrative, in which the unit modules illustrated as separate components may or may not be physically separate, and the components shown as unit modules may or may not be physical units, may be located in one place, or may be distributed over multiple network module units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
From the above description of embodiments, it will be apparent to those skilled in the art that the method portions of the embodiments may be implemented by means of software plus a general purpose hardware platform, or may be implemented by hardware. Based on such understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the related art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; the technical features of the above embodiments or in the different embodiments may also be combined under the idea of the present application, the steps may be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which are not provided in details for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A display module driving circuit, characterized by being applied to an electronic device, comprising: the first microprocessor, the signal conversion module, the first display module and the second display module, wherein,
the first output port of the first microprocessor is connected with the signal input port of the first display module, the second output port of the first microprocessor is connected with the input port of the signal conversion module, the output port of the signal conversion module is connected with the signal input port of the second display module, and the signal types corresponding to the first output port and the second output port are different;
the first microprocessor is configured to transmit a first video signal carrying a first sub-information in the information to be displayed to the first display module through the first output port, and transmit a second video signal carrying a second sub-information in the information to be displayed to the signal conversion module through the second output port;
the signal conversion module is configured to convert the second video signal into a third video signal, and transmit the third video signal to the second display module, where a signal type of the third video signal is the same as a signal type of the first video signal;
the first display module is used for receiving the first video signal and displaying first sub-information carried in the first video signal;
the second display module is configured to receive the third video signal and display second sub-information carried in the third video signal.
2. The display module driving circuit of claim 1, wherein the first output port corresponds to a signal type of edp and the second output port corresponds to a signal type of MIPI.
3. The display module driving circuit according to claim 2, wherein the signal conversion module comprises a second microprocessor and a first peripheral circuit comprising a first resistor, a second resistor, a first capacitor and a second capacitor, wherein,
the first end of the first resistor is connected with the first end of the second resistor, the first port of the second microprocessor and the first end of the first capacitor, the second end of the first resistor is connected with the first end of the second resistor, the first end of the second capacitor, the second port of the second microprocessor and the first end of the second capacitor, and the second end of the first capacitor is grounded after being connected with the second end of the second capacitor;
the MIPI signal port of the second microprocessor is connected with the second output port of the first microprocessor, and the edp signal port of the second microprocessor is connected with the second display module.
4. The display module driving circuit of claim 3, wherein the second display module comprises a display screen and a first filter circuit comprising a third capacitor, a fourth capacitor, a third resistor and a fourth resistor, wherein,
the first audio input port of the display screen is connected with the first end of the third capacitor and the first end of the third resistor, the second end of the third resistor is grounded, and the second end of the third capacitor is connected with the first audio output port of the second microprocessor;
the second audio input port of the display screen is connected with the first end of the fourth capacitor and the first end of the fourth resistor, the second end of the fourth resistor is connected with the first input power supply port, and the second end of the fourth capacitor is connected with the second audio output port of the second microprocessor.
5. The display module driving circuit according to claim 4, wherein the second display module further comprises a fifth capacitor and a sixth capacitor, a first end of the fifth capacitor is connected to the first end of the sixth capacitor, the second input power port, and the first power port of the display screen, and a second end of the fifth capacitor is connected to the second end of the sixth capacitor and then grounded.
6. The display module driving circuit of claim 5, wherein the first microprocessor comprises an RK3568 chip and the second microprocessor comprises an LT8911 EXB chip.
7. The display module driving circuit according to claim 5, wherein the information to be displayed includes a first image, the first sub-information includes a first sub-image, the second sub-information includes a second sub-image, and the first sub-image and the second sub-image are spliced to form the first image.
8. The display module driving circuit according to claim 5, wherein the information to be displayed comprises a first image, the first sub-information comprises a first sub-image, the second sub-information comprises a second sub-image, and the first sub-image and the second sub-image cannot be stitched to form the first image.
9. A display device comprising a circuit board and the display module driving circuit according to any one of claims 1 to 8, the display module driving circuit being provided on the circuit board.
10. A display apparatus comprising a housing and the display device according to claim 9, the display device being provided inside the housing.
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| CN202322483055.XU CN220731147U (en) | 2023-09-12 | 2023-09-12 | Display module driving circuit, display device and display equipment |
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| CN202322483055.XU CN220731147U (en) | 2023-09-12 | 2023-09-12 | Display module driving circuit, display device and display equipment |
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