CN218471574U - Double-display-screen driving circuit - Google Patents
Double-display-screen driving circuit Download PDFInfo
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- CN218471574U CN218471574U CN202222660864.9U CN202222660864U CN218471574U CN 218471574 U CN218471574 U CN 218471574U CN 202222660864 U CN202222660864 U CN 202222660864U CN 218471574 U CN218471574 U CN 218471574U
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Abstract
The utility model provides a double-display-screen driving circuit, including the main control chip module that is used for producing the display driving signal and sending image data, large-screen display module, small-screen display module, be used for receiving image data and input to the data processing module and the switch-on module of large-screen display module and small-screen display module, the signal input end of switch-on module is electrically connected at the signal output end of main control chip module, the signal input end of data processing module is electrically connected at the signal output end of switch-on module, the signal input end of large-screen display module and small-screen display module is all electrically connected with data processing module; the utility model discloses utilize single main control chip module to realize the screen display control to big screen display module and little screen display module, utilize simultaneously to switch on the module and realize switching on the selection to the alternative of big screen display module and little screen display module, solved in practical application, two main control chip of two display screens have increased whole display screen circuit complexity, have improved equipment cost's problem.
Description
Technical Field
The utility model relates to a display screen drive technical field especially relates to a double display screen drive circuit.
Background
In the asynchronous dual-display device, each display screen is provided with one main control chip, the screen display function is realized through the respective main control chip, a large display screen and a small display screen are usually arranged, the large display screen and the small display screen are switched according to the application environment, namely the large display screen and the small display screen are selected for display; however, in practical application, because two main control chips are arranged, the circuit complexity of the whole display screen is increased, and the equipment cost is also increased.
Therefore, it is necessary to provide a dual display panel driving circuit to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a two display screen drive circuit is used for solving in practical application, and two main control chip of two display screens have increased whole display screen circuit complexity, have improved equipment cost's problem.
The utility model provides a double-display-screen driving circuit, which comprises a main control chip module for generating display driving signals and sending image data, a large-screen display module for displaying normal pictures, a small-screen display module for displaying reduced pictures, a data processing module for receiving the image data and inputting the image data to the large-screen display module and the small-screen display module, and a conduction module for receiving the display driving signals and selecting one of the large-screen display module and the small-screen display module to drive, wherein,
the signal input end of the conduction module is electrically connected to the signal output end of the main control chip module, the signal input end of the data processing module is electrically connected to the signal output end of the conduction module, and the signal input ends of the large screen display module and the small screen display module are electrically connected to the data output end of the data processing module.
Preferably, the large screen display module and the small screen display module each include a signal interface, a control circuit, and a display panel, wherein,
the signal interface is used for receiving the image data output by the data processing module;
the control circuit is used for converting the image data accessed by the signal interface and sending the image data to the display panel;
and the display panel is used for receiving and displaying the converted image data.
Preferably, the data processing module is configured to process RGB color information, text information, and picture information included in the image data.
Preferably, the conducting module comprises a first controllable switch and a second controllable switch which are respectively and electrically connected with the large-screen display module and the small-screen display module, wherein,
when the main control chip inputs high level to the first controllable switch and the second controllable switch, the first controllable switch is conducted, the image data and the display driving signal are input to the large-screen display module, and the second controllable switch is cut off;
when the main control chip inputs low level to the first controllable switch and the second controllable switch, the second controllable switch is conducted, the image data and the display driving signal are input to the small-screen display module, and the first controllable switch is cut off.
Preferably, the first controllable switch is an NMOS transistor, and the control signal is input to the G pole of the NMOS transistor by the main control chip module.
Preferably, the second controllable switch is a PMOS transistor, and the same control signal is input to the G pole of the PMOS transistor by the main control chip module.
Preferably, the main control chip module at least includes a processing chip with a model CY8CTST 241.
Compared with the prior art, the utility model provides a pair of double-display-screen driving circuit has following beneficial effect:
the utility model discloses a single main control chip module realizes the screen display control to big screen display module and little screen display module, the high level that utilizes the controllable switch of NMOS that switches on the module simultaneously switches on, the low level ends and two high levels of the controllable switch of PMOS end, the characteristic that the low level switched on, the realization switches on the selection to the alternative of big screen display module and little screen display module, solved in practical application, two main control chip of two display screens have increased whole display screen circuit complexity, the problem of equipment cost has been improved.
Drawings
Fig. 1 is a schematic diagram of a schematic wire frame structure of a dual display screen driving circuit according to the present invention;
fig. 2 is a schematic diagram of a circuit of a conduction module of a dual-display driving circuit of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.
The present invention will be further described with reference to the accompanying drawings and embodiments.
The present invention provides a dual display screen driving circuit, in this embodiment, as shown in fig. 1, comprising a main control chip module for generating display driving signals and sending image data, a large screen display module for displaying normal pictures, a small screen display module for displaying reduced pictures, a data processing module for receiving image data and inputting the image data to the large screen display module and the small screen display module, and a conducting module for receiving display driving signals and selectively driving one of the large screen display module and the small screen display module,
the signal input end of the conduction module is electrically connected to the signal output end of the main control chip module, the signal input end of the data processing module is electrically connected to the signal output end of the conduction module, and the signal input ends of the large screen display module and the small screen display module are electrically connected to the data output end of the data processing module.
In this embodiment, each of the large screen display module and the small screen display module includes a signal interface, a control circuit, and a display panel, where the signal interface is used to receive image data output by the data processing module and is electrically coupled between the information processing module and the control circuit; the control circuit is used for converting the image data accessed by the signal interface and sending the image data to the display panel; the display panel is used for receiving and displaying the converted image data, and in a specific application, the display panel can be an LCD or an OLED.
In this embodiment, the data processing module is configured to process RGB color information, text information, and picture information included in the image data, and display the image information on the display screen through a combination of the RGB color information, the text information, and the picture information.
In this embodiment, as shown in fig. 2, the conducting module includes a first controllable switch and a second controllable switch electrically connected to the large-screen display module and the small-screen display module, respectively, where the first controllable switch is an NMOS transistor (having a characteristic of turning on at a high level and turning off at a low level), the second controllable switch is a PMOS transistor (having a characteristic of turning on at a low level and turning off at a high level), and the first controllable switch and the second controllable switch are input with a same control signal by the main control chip module, so that when the main control chip module inputs a high level or a low level, the first controllable switch and the second controllable switch can only be on, either the first controllable switch is on or the second controllable switch is on;
specifically, the controllable switch comprises a current-limiting resistor R1, an NMOS tube, a pull-down resistor R2, a freewheeling diode D1 and a diode Q1 connected in parallel to the NMOS tube;
the controllable switch person comprises a current-limiting resistor R3, a PMOS (P-channel metal oxide semiconductor) tube, a pull-down resistor R4, a freewheeling diode D2 and a diode Q2 connected in parallel with the PMOS tube;
the current limiting resistor R1 and the current limiting resistor R3 can reduce the instantaneous current value, the pull-down resistor R2 and the pull-down resistor R4 provide a bias, the situation that the G pole is subjected to an interference signal to enable the MOS tube to be accidentally conducted when the driving port is in a high-resistance state is avoided, and the freewheeling diode D1 and the freewheeling diode D2 play a role in smoothing current.
Specifically, when the main control chip inputs high level to the first controllable switch and the second controllable switch, the first controllable switch is turned on, image data and display driving signals are input to the large-screen display module, and the second controllable switch is turned off;
when the main control chip inputs low level to the first controllable switch and the second controllable switch, the second controllable switch is switched on, image data and display driving signals are input to the small-screen display module, and the first controllable switch is switched off at the moment.
The utility model discloses in, utilize a main control chip module to realize the control to large-size screen display module and small-size screen display module to the utilization switches on the module and switches the demonstration between large-size screen display module and small-size screen display module, with the demonstration demand that satisfies different scenes.
The main control chip module at least comprises a processing chip with the model of CY8CTST 241.
The utility model provides a pair of two display screen drive circuit's theory of operation as follows: the utility model discloses a single main control chip module realizes the screen display control to big screen display module and little screen display module, the high level that utilizes the controllable switch of NMOS that switches on the module simultaneously switches on, the low level ends and two high levels of PMOS controllable switch end, the characteristic that the low level switched on, the realization switches on the selection to the alternative of big screen display module and little screen display module, solved in practical application, two main control chip of two display screens have increased whole display screen circuit complexity, the problem of equipment cost has been improved.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (7)
1. A dual-display driving circuit is characterized by comprising a main control chip module for generating display driving signals and sending image data, a large-screen display module for displaying normal pictures, a small-screen display module for displaying reduced pictures, a data processing module for receiving the image data and inputting the image data to the large-screen display module and the small-screen display module, and a conducting module for receiving the display driving signals and selecting one of the large-screen display module and the small-screen display module to drive, wherein,
the signal input end of the conduction module is electrically connected to the signal output end of the main control chip module, the signal input end of the data processing module is electrically connected to the signal output end of the conduction module, and the signal input ends of the large screen display module and the small screen display module are electrically connected to the data output end of the data processing module.
2. The dual-display-screen driving circuit of claim 1, wherein the large-screen display module and the small-screen display module each comprise a signal interface, a control circuit and a display panel,
the signal interface is used for receiving the image data output by the data processing module;
the control circuit is used for converting the image data accessed by the signal interface and sending the image data to the display panel;
the display panel is used for receiving and displaying the converted image data.
3. The dual display panel driving circuit of claim 1, wherein the data processing module is configured to process RGB color information, text information, and picture information included in the image data.
4. The dual display panel driving circuit of claim 1, wherein the conducting module comprises a first controllable switch and a second controllable switch electrically connected to the large display module and the small display module, respectively,
when the main control chip inputs high level to the first controllable switch and the second controllable switch, the first controllable switch is switched on, the image data and the display driving signal are input to the large-screen display module, and the second controllable switch is switched off;
when the main control chip inputs low level to the first controllable switch and the second controllable switch, the second controllable switch is conducted, the image data and the display driving signal are input to the small-screen display module, and the first controllable switch is cut off.
5. The dual-display driving circuit as claimed in claim 4, wherein the first controllable switch is an NMOS transistor, and the control signal is inputted from the main control chip module to the G electrode of the NMOS transistor.
6. The dual-display-screen driving circuit of claim 5, wherein the second controllable switch is a PMOS transistor, and the same control signal is input to the G pole of the PMOS transistor by the main control chip module.
7. The dual-display driving circuit as claimed in any one of claims 1 to 6, wherein the main control chip module comprises at least a processing chip with model number CY8CTST 241.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222660864.9U CN218471574U (en) | 2022-10-10 | 2022-10-10 | Double-display-screen driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222660864.9U CN218471574U (en) | 2022-10-10 | 2022-10-10 | Double-display-screen driving circuit |
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| Publication Number | Publication Date |
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| CN218471574U true CN218471574U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222660864.9U Active CN218471574U (en) | 2022-10-10 | 2022-10-10 | Double-display-screen driving circuit |
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| CN (1) | CN218471574U (en) |
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- 2022-10-10 CN CN202222660864.9U patent/CN218471574U/en active Active
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