CN215815127U - Indoor LED display screen control circuit - Google Patents
Indoor LED display screen control circuit Download PDFInfo
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- CN215815127U CN215815127U CN202122032024.3U CN202122032024U CN215815127U CN 215815127 U CN215815127 U CN 215815127U CN 202122032024 U CN202122032024 U CN 202122032024U CN 215815127 U CN215815127 U CN 215815127U
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Abstract
The utility model relates to an indoor LED display screen control circuit, belonging to the technical field of indoor LED display screen control circuits; the technical problem to be solved is as follows: the improvement of the hardware structure of the control circuit of the indoor LED display screen is provided; the technical scheme for solving the technical problem is as follows: the display screen control circuit comprises a control circuit board arranged on the inner side of a shell, wherein a display screen controller, a voltage driving module and a power module are integrated on the control circuit board, the output end of the power module is connected with the input end of the voltage driving module, the output end of the voltage driving module is connected with a display screen arranged on the outer side of the shell, and the signal input end of the display screen is also connected with the display screen controller through a wire; three groups of grid driver control circuits are specifically arranged in the voltage driving module, and each grid driver control circuit is provided with a grid driver; the utility model is applied to indoor LED display screens.
Description
Technical Field
The utility model discloses an indoor LED display screen control circuit, and belongs to the technical field of indoor LED display screen control circuits.
Background
With the continuous updating and development of electronic technology, display screens are more and more widely applied, such as outdoor large screens for displaying information for the public, screens for indoor common computer televisions, or more small electronic products such as mobile phone flat panels, and the like, wherein the LED screens always occupy one place in the consumer market by virtue of the advantages of small distance, flexible splicing, energy conservation, environmental protection and the like.
For the purpose of realizing energy saving and environmental protection, the LED display screen used at present is seen from a power supply, if the nominal value voltage 5V is reduced, the proportion of the corresponding Schottky forward voltage drop on the output voltage is increased, the power output efficiency is reduced, the energy saving effect of the LED display screen is not obvious, and if the low-voltage power supply is simply used, the quality of the whole LED display screen is difficult to guarantee.
At present, according to research, a MOSFET driver with CMOS high-speed power can be used to adjust the power output, so that the power supply voltage of an LED display screen can be reduced to the required actual voltage, and the power efficiency can also reach the power efficiency of a general switching power supply voltage.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to solve the technical problems that: the improvement of the hardware structure of the control circuit of the indoor LED display screen is provided.
In order to solve the technical problems, the utility model adopts the technical scheme that: an indoor LED display screen control circuit comprises a control circuit board arranged on the inner side of a shell, wherein a display screen controller, a voltage driving module and a power module are integrated on the control circuit board, the output end of the power module is connected with the input end of the voltage driving module, the output end of the voltage driving module is connected with a display screen arranged on the outer side of the shell, and the signal input end of the display screen is also connected with the display screen controller through a wire;
the voltage driving module is internally provided with three groups of grid driver control circuits:
a gate driver Q1 is provided in the first gate driver control circuit;
a gate driver Q2 is provided in the second gate driver control circuit;
a gate driver Q3 is provided in the third gate driver control circuit;
the first gate driver control circuit has the structure that:
a pin 3 of the gate driver Q1 is connected with a resistor Rn83 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q1 is connected with one end of a resistor Rn89 in parallel and then connected with one end of a resistor Rn86, the other end of the resistor Rn86 is connected to a LAT control port of a display screen through a lead, and the other end of the resistor Rn89 is connected with a VCC input power supply;
a pin 2 of the gate driver Q1 is connected with one end of a resistor Rn98 and one end of a resistor Rn99 in parallel and then connected with one end of a resistor Rn95, and the other end of the resistor Rn98 and the other end of the resistor Rn99 are grounded; the other end of the resistor Rn95 is connected with one end of a resistor Rn92 in parallel and then is connected to a LATR control port of the display screen through a lead, and the other end of the resistor Rn92 is connected to a LAT control port of the display screen through a lead;
the second gate driver control circuit has the structure that:
a pin 3 of the gate driver Q2 is connected with a resistor Rn84 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q2 is connected with one end of a resistor Rn90 in parallel and then connected with one end of a resistor Rn87, the other end of the resistor Rn87 is connected to a CLK control port of a display screen through a lead, and the other end of the resistor Rn90 is connected with a VCC input power supply;
a pin 2 of the gate driver Q2 is connected with one end of a resistor Rn100 and one end of a resistor Rn101 in parallel and then connected with one end of a resistor Rn96, and the other end of the resistor Rn100 and the other end of the resistor Rn101 are both grounded; the other end of the resistor Rn96 is connected with one end of a resistor Rn93 in parallel and then is connected to a CLKR control port of the display screen through a lead, and the other end of the resistor Rn93 is connected to a CLK control port of the display screen through a lead;
the third gate driver control circuit has the structure that:
a pin 3 of the gate driver Q3 is connected with a resistor Rn85 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q3 is connected with one end of a resistor Rn91 in parallel and then connected with one end of a resistor Rn88, the other end of the resistor Rn88 is connected to an OE control port of a display screen through a lead, and the other end of the resistor Rn91 is connected with a VCC input power supply;
a pin 2 of the gate driver Q1 is connected with one end of a resistor Rn102 and one end of a resistor Rn103 in parallel and then connected with one end of a resistor Rn97, and the other end of the resistor Rn102 and the other end of the resistor Rn103 are both grounded; the other end of the resistor Rn97 is connected with one end of a resistor Rn94 in parallel and then is connected to an OER control port of the display screen through a lead, and the other end of the resistor Rn94 is connected to an OER control port of the display screen through a lead.
And the output end of the power supply module is also connected with the power supply input end of the display screen controller.
The gate driver is specifically an N-channel MOSFET driver, and the model is MAX 1614.
The model of the power chip used in the power module is OB5269 CP.
Compared with the prior art, the utility model has the beneficial effects that: the utility model adjusts the power output based on the MOSFET driver, improves the structure of the existing display screen control circuit, and improves the indoor LED display screen control circuit.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the circuit structure of the present invention;
fig. 2 is a circuit diagram of a gate driver control circuit according to the present invention.
Detailed Description
As shown in fig. 1 and 2, the control circuit for an indoor LED display screen according to the present invention includes a control circuit board installed inside a housing, the control circuit board is integrated with a display screen controller, a voltage driving module and a power module, an output terminal of the power module is connected to an input terminal of the voltage driving module, an output terminal of the voltage driving module is connected to a display screen installed outside the housing, and a signal input terminal of the display screen is further connected to the display screen controller through a wire;
the voltage driving module is internally provided with three groups of grid driver control circuits:
a gate driver Q1 is provided in the first gate driver control circuit;
a gate driver Q2 is provided in the second gate driver control circuit;
a gate driver Q3 is provided in the third gate driver control circuit;
the first gate driver control circuit has the structure that:
a pin 3 of the gate driver Q1 is connected with a resistor Rn83 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q1 is connected with one end of a resistor Rn89 in parallel and then connected with one end of a resistor Rn86, the other end of the resistor Rn86 is connected to a LAT control port of a display screen through a lead, and the other end of the resistor Rn89 is connected with a VCC input power supply;
a pin 2 of the gate driver Q1 is connected with one end of a resistor Rn98 and one end of a resistor Rn99 in parallel and then connected with one end of a resistor Rn95, and the other end of the resistor Rn98 and the other end of the resistor Rn99 are grounded; the other end of the resistor Rn95 is connected with one end of a resistor Rn92 in parallel and then is connected to a LATR control port of the display screen through a lead, and the other end of the resistor Rn92 is connected to a LAT control port of the display screen through a lead;
the second gate driver control circuit has the structure that:
a pin 3 of the gate driver Q2 is connected with a resistor Rn84 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q2 is connected with one end of a resistor Rn90 in parallel and then connected with one end of a resistor Rn87, the other end of the resistor Rn87 is connected to a CLK control port of a display screen through a lead, and the other end of the resistor Rn90 is connected with a VCC input power supply;
a pin 2 of the gate driver Q2 is connected with one end of a resistor Rn100 and one end of a resistor Rn101 in parallel and then connected with one end of a resistor Rn96, and the other end of the resistor Rn100 and the other end of the resistor Rn101 are both grounded; the other end of the resistor Rn96 is connected with one end of a resistor Rn93 in parallel and then is connected to a CLKR control port of the display screen through a lead, and the other end of the resistor Rn93 is connected to a CLK control port of the display screen through a lead;
the third gate driver control circuit has the structure that:
a pin 3 of the gate driver Q3 is connected with a resistor Rn85 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q3 is connected with one end of a resistor Rn91 in parallel and then connected with one end of a resistor Rn88, the other end of the resistor Rn88 is connected to an OE control port of a display screen through a lead, and the other end of the resistor Rn91 is connected with a VCC input power supply;
a pin 2 of the gate driver Q1 is connected with one end of a resistor Rn102 and one end of a resistor Rn103 in parallel and then connected with one end of a resistor Rn97, and the other end of the resistor Rn102 and the other end of the resistor Rn103 are both grounded; the other end of the resistor Rn97 is connected with one end of a resistor Rn94 in parallel and then is connected to an OER control port of the display screen through a lead, and the other end of the resistor Rn94 is connected to an OER control port of the display screen through a lead.
And the output end of the power supply module is also connected with the power supply input end of the display screen controller.
The gate driver is specifically an N-channel MOSFET driver, and the model is MAX 1614.
The model of the power chip used in the power module is OB5269 CP.
The utility model provides an improved control circuit applied to an indoor LED display screen, which is specifically designed into three N-channel MOSFET drivers to match with power supply voltage, so that the voltage of the power supply output voltage in the circuit is more stable.
Aiming at the problem of high energy consumption of the existing LED display screen, the utility model solves the problem of unstable signals of the LED display screen caused by the reduction of the output voltage of a power supply by improving the control circuit of the LED display screen; the utility model adopts three N-channel MOSFET drivers which respectively control CLK, OE and LAT data signals of the LED display screen, solves the problem of voltage drop of a display screen control circuit caused by low power supply output voltage by using the three N-channel MOSFET drivers, and can reduce the power supply output voltage of the LED display screen to a required voltage value by using the three N-channel MOSFET drivers.
It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules adopted by the present invention is determined and can be realized, except the specific description in the embodiment, the specific connection relationship can bring the corresponding technical effect, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of the corresponding software program, the models and the mutual connection modes of the components, modules and specific components appearing in the present invention, and the conventional use method and the expectable technical effect brought by the above technical features, such as the voltage stabilizing and reducing principle of the MOSFET driver, the control steps and the effect of the signals received by each pin of the display screen, except the specific description, all belong to the contents disclosed in the patents, journal articles, technical manuals, technical dictionaries and textbooks that can be obtained by the technicians in the field before the application date, or belongs to the prior art such as the conventional technology and the common general knowledge in the field, and the like, and no detailed description is needed, so that the technical scheme provided by the scheme is clear, complete and realizable, and the corresponding entity product can be reproduced or obtained according to the technical means.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides an indoor LED display screen control circuit, is including installing the inboard control circuit board of casing, its characterized in that: the control circuit board is integrated with a display screen controller, a voltage driving module and a power supply module, the output end of the power supply module is connected with the input end of the voltage driving module, the output end of the voltage driving module is connected with a display screen arranged on the outer side of the shell, and the signal input end of the display screen is also connected with the display screen controller through a wire;
the voltage driving module is internally provided with three groups of grid driver control circuits:
a gate driver Q1 is provided in the first gate driver control circuit;
a gate driver Q2 is provided in the second gate driver control circuit;
a gate driver Q3 is provided in the third gate driver control circuit;
the first gate driver control circuit has the structure that:
a pin 3 of the gate driver Q1 is connected with a resistor Rn83 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q1 is connected with one end of a resistor Rn89 in parallel and then connected with one end of a resistor Rn86, the other end of the resistor Rn86 is connected to a LAT control port of a display screen through a lead, and the other end of the resistor Rn89 is connected with a VCC input power supply;
a pin 2 of the gate driver Q1 is connected with one end of a resistor Rn98 and one end of a resistor Rn99 in parallel and then connected with one end of a resistor Rn95, and the other end of the resistor Rn98 and the other end of the resistor Rn99 are grounded; the other end of the resistor Rn95 is connected with one end of a resistor Rn92 in parallel and then is connected to a LATR control port of the display screen through a lead, and the other end of the resistor Rn92 is connected to a LAT control port of the display screen through a lead;
the second gate driver control circuit has the structure that:
a pin 3 of the gate driver Q2 is connected with a resistor Rn84 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q2 is connected with one end of a resistor Rn90 in parallel and then connected with one end of a resistor Rn87, the other end of the resistor Rn87 is connected to a CLK control port of a display screen through a lead, and the other end of the resistor Rn90 is connected with a VCC input power supply;
a pin 2 of the gate driver Q2 is connected with one end of a resistor Rn100 and one end of a resistor Rn101 in parallel and then connected with one end of a resistor Rn96, and the other end of the resistor Rn100 and the other end of the resistor Rn101 are both grounded; the other end of the resistor Rn96 is connected with one end of a resistor Rn93 in parallel and then is connected to a CLKR control port of the display screen through a lead, and the other end of the resistor Rn93 is connected to a CLK control port of the display screen through a lead;
the third gate driver control circuit has the structure that:
a pin 3 of the gate driver Q3 is connected with a resistor Rn85 in series and then is connected with a VCC input power supply;
a pin 1 of the gate driver Q3 is connected with one end of a resistor Rn91 in parallel and then connected with one end of a resistor Rn88, the other end of the resistor Rn88 is connected to an OE control port of a display screen through a lead, and the other end of the resistor Rn91 is connected with a VCC input power supply;
a pin 2 of the gate driver Q1 is connected with one end of a resistor Rn102 and one end of a resistor Rn103 in parallel and then connected with one end of a resistor Rn97, and the other end of the resistor Rn102 and the other end of the resistor Rn103 are both grounded; the other end of the resistor Rn97 is connected with one end of a resistor Rn94 in parallel and then is connected to an OER control port of the display screen through a lead, and the other end of the resistor Rn94 is connected to an OER control port of the display screen through a lead.
2. The control circuit of the indoor LED display screen of claim 1, wherein: and the output end of the power supply module is also connected with the power supply input end of the display screen controller.
3. The control circuit of the indoor LED display screen of claim 1, wherein: the gate driver is specifically an N-channel MOSFET driver, and the model is MAX 1614.
4. The control circuit of the indoor LED display screen of claim 1, wherein: the model of the power chip used in the power module is OB5269 CP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122032024.3U CN215815127U (en) | 2021-08-26 | 2021-08-26 | Indoor LED display screen control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122032024.3U CN215815127U (en) | 2021-08-26 | 2021-08-26 | Indoor LED display screen control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215815127U true CN215815127U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122032024.3U Active CN215815127U (en) | 2021-08-26 | 2021-08-26 | Indoor LED display screen control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN215815127U (en) |
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2021
- 2021-08-26 CN CN202122032024.3U patent/CN215815127U/en active Active
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