Energy-saving circuit based on LED display screen and LED display screen

Abstract

The utility model discloses an energy-saving circuit based on an LED display screen and the LED display screen, and belongs to the technical field of LED display screens, the energy-saving circuit comprises a power supply, a row tube circuit, an LED assembly, a common anode driving circuit and a signal transceiver circuit which are connected in sequence; the LED assembly comprises a red display assembly, a blue display assembly and a green display assembly, the power supply comprises a first negative pressure interface and a second negative pressure interface, the blue display assembly and the green display assembly are powered by the first negative pressure interface, and the red display assembly is powered by the second negative pressure interface; by separately supplying power to the red display assembly and other display assemblies, the power consumption of the display module is reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] This article belongs to the field of LED display technology, and in particular relates to an energy-saving circuit based on an LED display and an LED display. Background Technology

[0002] As LED display technology matures, brightness requirements are increasing while power consumption requirements are decreasing. To meet customer needs, industry designers have introduced common cathode and common anode energy-saving solutions. However, both solutions have certain drawbacks in the LED industry. Common cathode energy-saving solutions have fewer upstream and downstream suppliers and are more expensive; while common anode solutions have poor energy-saving effects and excessive power consumption in LED display modules. Utility Model Content

[0003] This article provides an energy-saving circuit and LED display screen based on an LED display screen. By separately powering the red display component and other display components, the power consumption of the LED display module is reduced, thereby achieving energy saving.

[0004] The technical solution adopted in this paper to solve the above-mentioned technical problems is as follows:

[0005] According to one aspect of this document, an energy-saving circuit based on an LED display screen is provided, comprising, in sequence: a power supply, a horizontal output transistor circuit, an LED component, a common anode driver circuit, and a signal transceiver circuit; the LED component includes a red display component, a blue display component, and a green display component; the power supply includes a first negative voltage interface and a second negative voltage interface; the blue and green display components are powered by the first negative voltage interface, and the red display component is powered by the second negative voltage interface.

[0006] Optionally, the common anode driving circuit includes: a first driving chip, a second driving chip, and a third driving chip, wherein the first driving chip is connected to the red display component, the second driving chip is connected to the green display component, and the third driving chip is connected to the blue display component.

[0007] Optionally, the row output circuit includes a row output chip, the voltage pin of the row output chip is grounded, the ground pin of the row output chip is connected to the first negative voltage interface of the power supply, and the output pin of the row output chip is connected to the positive terminal of the red display component, the blue display component and the green display component.

[0008] Optionally, the signal transceiver circuit includes a signal transceiver chip, the voltage pin of the signal transceiver chip is grounded, the ground pin of the signal transceiver chip is connected to the first negative voltage interface of the power supply, the first signal pin of the signal transceiver chip is connected to the third driver chip, the second signal pin of the signal transceiver chip is connected to the second driver chip, and the third signal pin of the signal transceiver chip is connected to the first driver chip.

[0009] Optionally, the output pin of the first driver chip is connected to the negative terminal of the red display component, the data input pin of the first driver chip is connected to the first data output pin of the signal transceiver chip, the ground pin of the first driver chip is connected to the second negative voltage interface, and the voltage pin of the first driver chip is grounded.

[0010] Optionally, the output pin of the second driver chip is connected to the negative terminal of the green display component, the data input pin of the second driver chip is connected to the second data output pin of the signal transceiver chip, the ground pin of the second driver chip is connected to the first negative voltage interface, and the voltage pin of the second driver chip is grounded.

[0011] Optionally, the output pin of the third driver chip is connected to the negative terminal of the blue display component, the data input pin of the third driver chip is connected to the third data output pin of the signal transceiver chip, the ground pin of the third driver chip is connected to the first negative voltage interface, and the voltage pin of the third driver chip is grounded.

[0012] Optionally, it also includes an isolation circuit, one end of which is connected to the data input pin of the first driver chip, and the other end of which is connected to the first data output pin of the signal transceiver chip.

[0013] Optionally, the isolation circuit includes a first diode and a second diode, the anode of the first diode and the cathode of the second diode are connected to the data input pin of the first driver chip, and the cathode of the first diode and the anode of the second diode are connected to the first data output pin of the signal transceiver chip.

[0014] As another aspect of the present invention, an LED display screen is provided, including the energy-saving circuit based on the LED display screen described above, and further including a controller, a mounting bracket and an LED display module. The energy-saving circuit is disposed on the controller, and the controller and the LED display module are disposed on the mounting bracket.

[0015] This utility model discloses an energy-saving circuit and an LED display screen based on an LED display screen. The energy-saving circuit includes, in sequence, a power supply, a horizontal output transistor circuit, an LED component, a common anode driver circuit, and a signal transceiver circuit. The LED component includes a red display component, a blue display component, and a green display component. The power supply includes a first negative voltage interface and a second negative voltage interface. The blue and green display components are powered by the first negative voltage interface, and the red display component is powered by the second negative voltage interface. By separately powering the red display component and the other display components, the power consumption of the display module is reduced, achieving an energy-saving effect. Attached Figure Description

[0016] Figure 1 A functional structure diagram of an energy-saving circuit based on an LED display screen is provided for Embodiment 1 of this utility model;

[0017] Figure 2 A circuit diagram of an energy-saving circuit based on an LED display screen provided for Embodiment 1 of this utility model;

[0018] Figure 3 A circuit diagram of the row output transistor circuit provided in Embodiment 1 of this utility model;

[0019] Figure 4 A circuit diagram of the signal transceiver circuit provided in Embodiment 1 of this utility model;

[0020] Figure 5 A circuit diagram of the isolation circuit provided in Embodiment 1 of this utility model;

[0021] Figure 6 A circuit diagram of the common anode drive circuit provided in Embodiment 1 of this utility model;

[0022] Figure 7 This is a schematic diagram of an LED display screen provided in Embodiment 2 of this utility model.

[0023] Figure label:

[0024] 1-Mounting bracket, 2-LED display module.

[0025] The objectives, features, and advantages of this document will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the technical problems, solutions, and beneficial effects described herein clearer and more understandable, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this document.

[0027] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0028] Example 1

[0029] like Figure 1 As shown, in this embodiment, an energy-saving circuit based on an LED display screen includes, in sequence: a power supply, a horizontal output transistor circuit, an LED component, a common anode driver circuit, and a signal transceiver circuit; the LED component includes a red display component, a blue display component, and a green display component; the power supply includes a first negative voltage interface and a second negative voltage interface; the blue display component and the green display component are powered by the first negative voltage interface V1, and the red display component is powered by the second negative voltage interface V2.

[0030] In this embodiment, by changing the power supply method of the circuit, the red display component and its associated first driver chip and other display components are powered separately. Under the condition that the brightness of the display components is the same, the power consumption of the display module is reduced, thereby achieving the energy-saving effect of the LED display screen.

[0031] In this embodiment, the first negative pressure interface and the second negative pressure interface are powered by the same power source.

[0032] like Figure 2 As shown, in this embodiment, the common anode driving circuit includes: a first driving chip, a second driving chip, and a third driving chip. The first driving chip is connected to the red display component, the second driving chip is connected to the green display component, and the third driving chip is connected to the blue display component.

[0033] like Figure 3 As shown, in this embodiment, the horizontal output transistor circuit includes a horizontal output transistor chip and a capacitor CH3. The voltage pins 1 and 12 of the horizontal output transistor chip are grounded together with one end of the capacitor CH3. The ground pin 9 of the horizontal output transistor chip and the other end of the capacitor CH3 are connected to the first negative voltage interface V1. The output pin 16 of the horizontal output transistor chip is connected to the positive terminal of the red display component, the blue display component and the green display component.

[0034] like Figure 4As shown, in this embodiment, the signal transceiver circuit includes a signal transceiver chip. The voltage pin 1 and voltage pin 20 of the signal transceiver chip are grounded. The ground pin 10 and ground pin 19 of the signal transceiver chip are connected to the first negative voltage interface V1. The first signal pin 18 of the signal transceiver chip is connected to the third driver chip. The second signal pin 16 of the signal transceiver chip is connected to the second driver chip. The third signal pin 14 of the signal transceiver chip is connected to the first driver chip.

[0035] In this embodiment, the signal transceiver chip is model 74HC245C-TSSOP20.

[0036] like Figure 5 As shown, the output pin 5 of the first driver chip is connected to the negative terminal of the red display component, the data input pin 2 of the first driver chip is connected to the first data output pin 14 of the signal transceiver chip, the ground pin 1 of the first driver chip is connected to the second negative voltage interface, and the voltage pin 24 of the first driver chip is grounded.

[0037] like Figure 6 As shown, in this embodiment, the output pin 5 of the second driver chip is connected to the negative terminal of the green display component, the data input pin 2 of the second driver chip is connected to the second data output pin 16 of the signal transceiver chip, the ground pin 1 of the second driver chip is connected to the first negative voltage interface, and the voltage pin 24 of the second driver chip is grounded.

[0038] like Figure 6 As shown, in this embodiment, the output pin 5 of the third driver chip is connected to the negative terminal of the blue display component, the data input pin 2 of the third driver chip is connected to the third data output pin 18 of the signal transceiver chip, the ground pin 1 of the third driver chip is connected to the first negative voltage interface, and the voltage pin 24 of the third driver chip is grounded.

[0039] like Figure 5 As shown, in this embodiment, an isolation circuit is also included. One end of the isolation circuit is connected to the data input pin 2 of the first driver chip, and the other end of the isolation circuit is connected to the first data output pin 14 of the signal transceiver chip. The isolation circuit includes a first diode D1 and a second diode D2. The anode of the first diode D1 and the cathode of the second diode D2 are connected to the data input pin 2 of the first driver chip, and the cathode of the first diode D1 and the anode of the second diode D2 are connected to the first data output pin 14 of the signal transceiver chip.

[0040] In this embodiment, the voltage mode of the display components is changed from positive voltage to dual negative voltage. The power supply is divided into two output voltages, V1 and V2. One output voltage supplies power to the red display component and its controlling constant current IC, while the other output voltage supplies power to the signal transceiver, green and blue display components, horizontal output transistor, and constant current IC. By reducing the voltage supplied to the red display and constant current IC, power consumption is reduced, thereby achieving energy saving. For example, when -V1 is -3.8V and -V2 is -3V, there is a voltage difference of 0.8V between the red LED driver IC and the signal transceiver. This potential difference may interfere with signal transmission or even damage the circuit. The isolation circuit is used to solve the voltage difference problem between the driver component and the signal transceiver component.

[0041] Example 2

[0042] like Figure 7 As shown, in this embodiment, an LED display screen includes the energy-saving circuit based on the LED display screen described in Embodiment 1, and also includes a controller (not shown in the figure), a mounting bracket 1 and an LED display module 2. The energy-saving circuit is disposed on the controller, and the controller and the LED display module 2 are disposed on the mounting bracket 1.

[0043] In this embodiment, by changing the power supply method of the circuit, the red display component and its associated first driver chip and other display components in the LED display module 2 are powered separately. Under the condition that the brightness of the display components is the same, the power consumption of the display module is reduced, thereby achieving the energy-saving effect of the LED display screen.

[0044] The preferred embodiments of this utility model have been described above with reference to the accompanying drawings, but this does not limit the scope of the utility model. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of this utility model should be within the scope of the utility model.

Claims

1. An energy-saving circuit based on an LED display screen, characterized in that, It includes, in sequence: a power supply, a horizontal output transistor circuit, an LED assembly, a common anode driver circuit, and a signal transceiver circuit; the LED assembly includes a red display assembly, a blue display assembly, and a green display assembly; the power supply includes a first negative voltage interface and a second negative voltage interface; the blue and green display assemblies are powered by the first negative voltage interface, and the red display assembly is powered by the second negative voltage interface.

2. The energy-saving circuit based on an LED display screen according to claim 1, characterized in that, The common anode driving circuit includes a first driving chip, a second driving chip, and a third driving chip. The first driving chip is connected to the red display component, the second driving chip is connected to the green display component, and the third driving chip is connected to the blue display component.

3. The energy-saving circuit based on an LED display screen according to claim 2, characterized in that, The horizontal output circuit includes a horizontal output chip, the voltage pin of which is grounded, the ground pin of which is connected to the first negative voltage interface of the power supply, and the output pin of which is connected to the positive terminal of the red display component, the blue display component, and the green display component.

4. The energy-saving circuit based on an LED display screen according to claim 3, characterized in that, The signal transceiver circuit includes a signal transceiver chip. The voltage pin of the signal transceiver chip is grounded. The ground pin of the signal transceiver chip is connected to the first negative voltage interface of the power supply. The first signal pin of the signal transceiver chip is connected to the third driver chip. The second signal pin of the signal transceiver chip is connected to the second driver chip. The third signal pin of the signal transceiver chip is connected to the first driver chip.

5. The energy-saving circuit based on an LED display screen according to claim 4, characterized in that, The output pin of the first driver chip is connected to the negative terminal of the red display component, the data input pin of the first driver chip is connected to the first data output pin of the signal transceiver chip, the ground pin of the first driver chip is connected to the second negative voltage interface, and the voltage pin of the first driver chip is grounded.

6. The energy-saving circuit based on an LED display screen according to claim 4, characterized in that, The output pin of the second driver chip is connected to the negative terminal of the green display component, the data input pin of the second driver chip is connected to the second data output pin of the signal transceiver chip, the ground pin of the second driver chip is connected to the first negative voltage interface, and the voltage pin of the second driver chip is grounded.

7. The energy-saving circuit based on an LED display screen according to claim 4, characterized in that, The output pin of the third driver chip is connected to the negative terminal of the blue display component, the data input pin of the third driver chip is connected to the third data output pin of the signal transceiver chip, the ground pin of the third driver chip is connected to the first negative voltage interface, and the voltage pin of the third driver chip is grounded.

8. The energy-saving circuit based on an LED display screen according to any one of claims 5-7, characterized in that, It also includes an isolation circuit, one end of which is connected to the data input pin of the first driver chip, and the other end of which is connected to the first data output pin of the signal transceiver chip.

9. The energy-saving circuit based on an LED display screen according to claim 8, characterized in that, The isolation circuit includes a first diode and a second diode. The anode of the first diode and the cathode of the second diode are connected to the data input pin of the first driver chip, and the cathode of the first diode and the anode of the second diode are connected to the first data output pin of the signal transceiver chip.

10. An LED display screen, characterized in that, The energy-saving circuit based on an LED display screen as described in any one of claims 1-9 further includes a controller, a mounting bracket, and an LED display module, wherein the energy-saving circuit is disposed on the controller, and the controller and the LED display module are disposed on the mounting bracket.

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