CN220691648U - Display device with double-screen free signal switching function - Google Patents
Display device with double-screen free signal switching function Download PDFInfo
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- CN220691648U CN220691648U CN202322007419.7U CN202322007419U CN220691648U CN 220691648 U CN220691648 U CN 220691648U CN 202322007419 U CN202322007419 U CN 202322007419U CN 220691648 U CN220691648 U CN 220691648U
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Abstract
The application discloses display device with two screen free signal switch function relates to LED application technical field, especially relates to a display device with two screen free signal switch function, and it includes: a display and a video switch board; the display comprises a main screen and a secondary screen; the video switching board comprises a backlight display module, a video processing module, a video interface module and a control module; the video processing module is connected with the control module, the control module is connected with a plurality of control keys, and the control keys comprise video signal switching keys; the video processing module comprises a first video processing unit and a second video processing unit; the backlight display module comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively and independently connected with the main screen and the auxiliary screen; the switching of any signal source of the double screens can be realized by switching the signal sources received by the first video processing unit and the second video processing unit through the video signal switching key.
Description
Technical Field
The application relates to the technical field of LED application, in particular to a display device with a double-screen free signal switching function.
Background
In our daily life and work, paperless office refers to a working mode performed in a paperless office environment without paper, and paperless office requires hardware, software and a communication network to cooperate to achieve office experience. Paperless office is a trend of future office, steps of paperless office in enterprises still walk faster, but video conversion boards of the traditional paperless double-screen lifter are controlled by two video conversion boards, each board can only control single-screen display, and switching display of any double-screen signals cannot be achieved.
Disclosure of Invention
The utility model aims to avoid the defects in the prior art and provides a technology capable of realizing switching of any signal source of a double screen.
The aim of the utility model is achieved by the following technical scheme:
a display device provided with a dual-screen free signal switching function, comprising: a display and a video switch board; the display comprises a main screen and a secondary screen; the video switching board comprises a backlight display module, a video processing module, a video interface module and a control module; the video interface module is connected with the video processing module and is provided with a plurality of video interfaces; the video processing module is connected with the control module, the control module is connected with a plurality of control keys, and the control keys comprise video signal switching keys; the video processing module comprises a first video processing unit, a second video processing unit, a first output end and a second output end; the first video processing unit and the second video processing unit are respectively and independently connected with the first output end and the second output end; the backlight display module comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively and independently connected with the main screen and the auxiliary screen.
Specifically, the video interface includes: HDMI interface and VGA interface; the video interface module includes: the HDMI interface circuit and the VGA interface circuit are respectively used for being connected with the HDMI interface and the VGA interface.
More specifically, the video switching board further comprises a power supply module, wherein the power supply module is respectively connected with the backlight display module, the video processing module, the video interface module and the control module and respectively supplies power to the backlight display module, the video processing module, the video interface module and the control module.
More specifically, the main screen adopts an EDP liquid crystal screen, and the auxiliary screen adopts an LVDS liquid crystal screen.
More specifically, the first display unit includes a first level shift circuit and a drive enhancing circuit; the second display unit includes a second level shift circuit.
More specifically, the power module is connected to the first level conversion circuit and the driving enhancement circuit, and provides 5V voltage and 3.3V voltage for the first level conversion circuit and the driving enhancement circuit.
In another embodiment, the power module is connected to the second level shifter to provide 12V for the first level shifter.
Above, control module includes a plurality of adjusting resistor, connects corresponding control button respectively, and each adjusting resistor's resistance is different.
Further, the control keys further comprise a switch key and a play key.
Further, the device also comprises a lifting mechanism; the lifting mechanism is respectively connected with the control module and the power supply module; the control keys also include a up key and a down key.
The utility model has the beneficial effects that: a display device provided with a dual-screen free signal switching function, comprising: a display and a video switch board; the display comprises a main screen and a secondary screen; the video switching board comprises a backlight display module, a video processing module, a video interface module and a control module; the video interface module is connected with the video processing module and is provided with a plurality of video interfaces; the video processing module is connected with the control module, the control module is connected with a plurality of control keys, and the control keys comprise video signal switching keys; the video processing module comprises a first video processing unit, a second video processing unit, a first output end and a second output end; the first video processing unit and the second video processing unit are respectively and independently connected with the first output end and the second output end; the backlight display module comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively and independently connected with the main screen and the auxiliary screen; the switching of any signal source of the double screens can be realized by switching the signal sources received by the first video processing unit and the second video processing unit through the video signal switching key.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of an electrical principle of a display device with a dual-screen free signal switching function according to an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a first level shifter of a display device with a dual-screen free signal switching function according to an embodiment of the present application;
fig. 3 is a schematic circuit diagram of a first level shifter of a display device with a dual-screen free signal switching function according to an embodiment of the present application;
FIG. 4 is a schematic circuit diagram of a driving enhancement circuit of a display device with dual-screen free signal switching function according to an embodiment of the present application;
fig. 5 is a circuit schematic diagram of a second level shifter of a display device with a dual-screen free signal switching function according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described by implementation with reference to the accompanying drawings in the examples of the present application, and it is apparent that the described examples are some, but not all, examples of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Example 1
One implementation method of the display device with the dual-screen free signal switching function of the present application, as shown in fig. 1 to 5, includes: a display and a video switcher.
The display comprises a main screen and an auxiliary screen, wherein the main screen adopts an EDP liquid crystal screen, and the auxiliary screen adopts an LVDS liquid crystal screen.
In this embodiment, the primary screen is a 15.6 inch high definition EDP lcd screen and the secondary screen is an 11.6 inch high definition LVDS lcd screen.
The video switching board comprises a backlight display module, a video processing module, a video interface module, a control module and a power supply module; the power supply module is respectively connected with the backlight display module, the video processing module, the video interface module and the control module and respectively supplies power to the backlight display module, the video processing module, the video interface module and the control module.
In this embodiment, the power module uses a power regulator chip SY8113 bat to convert the 12V input into 5V,3.3V,1.1V,2.5V for use by other modules.
The video processing module comprises a first video processing unit, a second video processing unit, a first output end and a second output end; the first video processing unit and the second video processing unit are respectively and independently connected with the first output end and the second output end; the backlight display module comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively and independently connected with the main screen and the auxiliary screen.
In this embodiment, the MCU of the video processing module adopts an RTD2556QR video processing chip, and the chip needs to be mounted with a video processing module Flash to burn the program of the video processing chip.
The video interface module is connected with the video processing module and is provided with a plurality of video interfaces. The video processing module is connected with the control module, the control module is connected with a plurality of control keys, and the control keys comprise video signal switching keys.
In the application, the first video processing unit and the second video processing unit respectively process corresponding video signals and respectively send the video signals to the first display unit and the second display unit, and finally, corresponding video contents are respectively displayed through the main screen and the auxiliary screen. In the practical process, the first video processing unit and/or the second video processing unit can be switched through the video signal switching key to acquire the corresponding video interface of the video signal.
Specifically, the video interface includes: HDMI interface and VGA interface; the video interface module includes: the HDMI interface circuit and the VGA interface circuit are respectively used for being connected with the HDMI interface and the VGA interface to acquire video signals input by the corresponding interfaces.
In this embodiment, when in use, when the main screen output display is HDMI, the video signal switching key is pressed once, and at this time, the front screen output display switching can be switched to VGA signal; the switching of the signal can be realized on the auxiliary screen in the same way, and the difference is that when the auxiliary screen is switched, the video signal switching key is required to be pressed twice, so that the switching of the main screen and the auxiliary screen is realized together.
Further, the first display unit includes a first level shift circuit and a drive enhancing circuit; the second display unit includes a second level shift circuit.
The first level conversion circuit generates a pulse modulation signal BL1PWM2 through level conversion, and the first display unit adjusts the backlight brightness of the EDP output screen by controlling the duty ratio of BL1PWM 2.
In the drive enhancement circuit, when the 3.3V voltage of the network onBACKLINE2 enters, two paths of 3.3V outputs are output after passing through the triode Q5, one path of reserved 5V output is output, and the level of the output after passing through the triode Q5 is relatively stable. And then outputting the connection onBACK2 to the main control chip of the first display unit. The circuit is used for reserving and adjusting backlight driving capability. Since the driving capability of the EDP screen itself is unstable, it is necessary to increase the driving capability.
The second level conversion circuit generates a pulse modulation signal BL2PWM through level conversion, and the second display unit adjusts the backlight brightness of the LVDS output screen by controlling the duty ratio of the BL2 PWM.
More specifically, the power module is connected to the first level conversion circuit and the driving enhancement circuit, and provides 5V voltage and 3.3V voltage for the first level conversion circuit and the driving enhancement circuit. The power module is connected with the second level conversion circuit and provides 12V voltage for the first level conversion circuit.
Further, the control module comprises a plurality of adjusting resistors which are respectively connected with the corresponding control keys, and the resistance values of the adjusting resistors are different.
Further, the control keys further comprise a switch key and a play key.
Further, the device also comprises a lifting mechanism; the lifting mechanism is respectively connected with the control module and the power supply module; the control keys also include a up key and a down key.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, while the present application has been described in connection with the above embodiments, the present application is not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the present application, the scope of which is defined by the scope of the appended claims.
Claims (10)
1. A display device with dual-screen free signal switching function, comprising: a display and a video switch board;
the display comprises a main screen and a secondary screen; the video switching board comprises a backlight display module, a video processing module, a video interface module and a control module;
the video interface module is connected with the video processing module and is provided with a plurality of video interfaces;
the video processing module is connected with the control module, the control module is connected with a plurality of control keys, and the control keys comprise video signal switching keys;
the video processing module comprises a first video processing unit, a second video processing unit, a first output end and a second output end; the first video processing unit and the second video processing unit are respectively and independently connected with the first output end and the second output end;
the backlight display module comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively and independently connected with the main screen and the auxiliary screen.
2. A display device with a dual screen free signal switching function as claimed in claim 1 wherein:
the video interface includes: HDMI interface and VGA interface;
the video interface module includes: and the HDMI interface circuit and the VGA interface circuit are respectively used for being connected with the HDMI interface and the VGA interface.
3. A display device provided with a dual screen free signal switching function as claimed in claim 2, characterized in that:
the video switching board further comprises a power supply module, wherein the power supply module is respectively connected with the backlight display module, the video processing module, the video interface module and the control module and respectively supplies power for the backlight display module, the video processing module, the video interface module and the control module.
4. A display device provided with a double-screen free signal switching function as claimed in claim 3, characterized in that:
the main screen adopts an EDP liquid crystal screen, and the auxiliary screen adopts an LVDS liquid crystal screen.
5. A display device with a dual screen free signal switching function as claimed in claim 4 wherein:
the first display unit comprises a first level conversion circuit and a drive enhancement circuit; the second display unit includes a second level shift circuit.
6. A display device with a dual screen free signal switching function as claimed in claim 5 wherein:
the power supply module is respectively connected with the first level conversion circuit and the drive enhancement circuit and provides 5V voltage and 3.3V voltage for the first level conversion circuit and the drive enhancement circuit.
7. A display device with a dual screen free signal switching function as claimed in claim 5 wherein:
the power supply module is connected with the second level conversion circuit and provides 12V voltage for the first level conversion circuit.
8. A display device provided with a dual screen free signal switching function according to any one of claims 3 to 7, characterized in that:
the control module comprises a plurality of adjusting resistors which are respectively connected with corresponding control keys, and the resistance values of the adjusting resistors are different.
9. A display device with dual screen free signal switching function as claimed in claim 8 wherein:
the control keys also comprise a switch key and a play key.
10. A display device with dual screen free signal switching function as claimed in claim 9 wherein: the device also comprises a lifting mechanism;
the lifting mechanism is respectively connected with the control module and the power supply module;
the control keys also include a up key and a down key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322007419.7U CN220691648U (en) | 2023-07-28 | 2023-07-28 | Display device with double-screen free signal switching function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322007419.7U CN220691648U (en) | 2023-07-28 | 2023-07-28 | Display device with double-screen free signal switching function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220691648U true CN220691648U (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322007419.7U Active CN220691648U (en) | 2023-07-28 | 2023-07-28 | Display device with double-screen free signal switching function |
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| Country | Link |
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| CN (1) | CN220691648U (en) |
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2023
- 2023-07-28 CN CN202322007419.7U patent/CN220691648U/en active Active
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