CN220087513U

CN220087513U - RGB multicolor patch light-emitting diode

Info

Publication number: CN220087513U
Application number: CN202320664294.2U
Authority: CN
Inventors: 刘杰; 谢雪梅
Original assignee: Dongguan Zhongyuan Electronic Technology Co ltd
Current assignee: Dongguan Zhongyuan Electronic Technology Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-11-24
Anticipated expiration: 2033-03-30

Abstract

The utility model relates to an RGB multicolor patch light-emitting diode which is used for infrared reflow soldering, and comprises a shell, a chip, a lamp bead and a welding pin, wherein the welding pin is arranged on the chip and connected with the lamp bead through the welding pin, and the chip, the lamp bead and the welding pin are all arranged in the shell; the chip is connected with a DIN port and a DOUT port, wherein the DIN port is one input port in the RGB multicolor patch light-emitting diode and is used for receiving data sent by an external controller; the DOUT port is used for forwarding data after 48bit data is received through the DIN port after the chip is powered on and reset, and providing input data for the next chip. The RGB multicolor patch light-emitting diode adopts an automatic shaping and forwarding technology, avoids a flickering phenomenon, improves user experience, simplifies data transmission by adopting a unipolar return-to-zero code, and improves transmission rate and reliability.

Description

RGB multicolor patch light-emitting diode

Technical Field

The utility model relates to the technical field of LED soft lamp strips, in particular to an RGB multicolor patch light-emitting diode.

Background

Along with the expansion of the application range of the LED lamplight product, the diode is used as a novel LED lamplight product, has the advantages of bright color, high brightness, long service life, low power consumption and the like, and is widely applied to various indoor and outdoor decorative lamplight fields.

In the prior art, the commonly used LED light products comprise single chip microcomputer control, conventional DMX control, SPI control, I2C control and the like, and have some limitations, such as insufficient flexibility of single chip microcomputer control, limited communication distance of DMX control, slower SPI control speed and the like. When aiming at the diode, the brightness and the color of the LED lamp light are controlled by using PWM signals, but the scheme needs a great deal of hardware resources and programming development, has poor flexibility and cannot meet the high requirements of users on the lamp light control. In addition, the singlechip control technology also has the problems of limited communication distance, low light control speed and the like.

Therefore, a novel RGB multicolor patch light-emitting diode is needed, which can overcome the limitation of the prior art, realize more flexible and efficient light control, and improve the use experience of users.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide the RGB multicolor patch light-emitting diode which can overcome the limitation of the traditional control mode, realize more flexible and efficient light control and improve the use experience of users. The utility model adopts a single-wire communication mode and adopts a return-to-zero code mode to send signals, thereby realizing an automatic shaping and forwarding technology, ensuring that the cascade number of the chips is not limited by signal transmission and only limited by the requirement of screen-brushing speed. Meanwhile, the utility model also supports various communication protocols including SPI, I2C and the like, and can realize more flexible light control.

In order to achieve the above object, the present utility model provides the following solutions:

the utility model provides an RGB multicolor patch light-emitting diode, which comprises a shell, a chip, a lamp bead and welding pins, wherein the welding pins are arranged on the chip and are connected with the lamp bead through the welding pins, and the chip, the lamp bead and the welding pins are all arranged in the shell; the chip is connected with a DIN port and a DOUT port, wherein the DIN port is one input port in the RGB multicolor patch light-emitting diode and is used for receiving data sent by an external controller; the DOUT port is used for forwarding data after 48bit data is received through the DIN port after the chip is powered on and reset, and providing input data for the next chip.

As a further scheme of the utility model, three PWM output ports are arranged on the welding pins of the chip, wherein the three PWM output ports are OUTR, OUTG, OUTB pins in the chip, and an OUTR port, an OUTB port and an OUTG port are respectively formed.

As a further scheme of the utility model, the chip is respectively connected with the red LED, the blue LED and the green LED through three PWM output ports, the OUTR port is used for controlling the brightness of the red LED, the OUTB port is used for controlling the brightness of the blue LED, and the OUTG port is used for controlling the brightness of the green LED.

As a further scheme of the utility model, after receiving 48bit data, the chip is also used for sending out signals for controlling the duty ratio of the three PWM output ports, and the signal frequency is 4kHz.

As a further scheme of the utility model, the DIN port is connected with an external controller and is used for receiving data sent by the external controller and controlling the color and the brightness of the RGB multicolor patch light-emitting diode to be 4kHz.

As a further scheme of the utility model, the chip is communicated with an external controller in a single-wire communication mode, the external controller is connected with the chip through a DIN port, and data is sent to the chip through the DIN port to control the color and the brightness of the RGB multicolor patch light-emitting diode.

As a further scheme of the utility model, the chip sends signals in a return-to-zero code mode, automatically shapes and forwards data to the next chip, and performs cascade control.

The utility model also provides a controller of the RGB multicolor patch light-emitting diode, which comprises a control chip, a gray level regulating circuit and an interface component; the interface component is connected with the control chip, and the control chip is used for controlling the color and the brightness of the LED; the gray level adjusting circuit is used for realizing 65536 gray level adjustment of the LEDs in the RGB multicolor patch light emitting diode.

As a further aspect of the present utility model, the interface assembly includes a DIN interface, a DOUT interface, a RESET interface, a VDD interface, a GND interface, an outl/OUTG/OUTB interface, and a CLK interface;

the DIN interface is used for receiving data sent by an external controller;

the DOUT interface: the method is used for forwarding the received data to the next chip to realize cascade control;

the RESET interface: for resetting the control chip to re-receive new data;

the VDD interface: the power supply is used for receiving a system power supply and providing an operating voltage;

the GND interface: the circuit is used for receiving a system ground wire and providing a circuit reference potential;

the OUTR/OUTG/OUTB interface: the LED driving circuit is used for controlling the brightness and the color of three LEDs of red, green and blue in the RGB multicolor patch LED, and can realize the mixing and the change of various different colors by controlling the duty ratios of three PWM output ports;

the CLK interface: for providing a clock signal to control the rate and synchronization of data transmissions.

As a further scheme of the utility model, the control chip supports various communication protocols including SPI, I2C and the like.

Compared with the prior art, the RGB multicolor patch light-emitting diode provided by the utility model has the following beneficial effects:

1. the RGB multicolor patch light-emitting diode provided by the utility model supports 65536-level gray scale adjustability, can realize finer color change, can output a constant current value through the configuration of a controller, and is convenient for controlling brightness and power consumption; is suitable for infrared reflow soldering, and can improve the production efficiency and the product quality.

2. The RGB multicolor patch light-emitting diode provided by the utility model adopts a single-wire communication mode, simplifies circuit design and layout, improves system reliability, supports cascading, has no signal transmission limit, and can realize large-scale application.

3. The RGB multicolor patch light-emitting diode provided by the utility model adopts an automatic shaping and forwarding technology, avoids a flickering phenomenon, improves user experience, simplifies data transmission by adopting a unipolar return-to-zero code, and improves transmission rate and reliability.

In conclusion, the RGB multicolor patch light-emitting diode has higher practicability and economic benefit, and is suitable for the fields of LED illumination, advertisement display, stage lighting and the like.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a diagram showing the whole structure of an RGB multicolor patch led product according to the present utility model.

Fig. 2 is a diagram showing the internal structure of the RGB magic color patch led of the present utility model.

Fig. 3 is a diagram showing a chip portion of the RGB multicolor patch led of the present utility model.

Fig. 4 is a front view of an RGB fantasy patch led of the present utility model.

Fig. 5 is a left side view of an RGB fantasy patch led of the present utility model.

Fig. 6 is a top view of an RGB fantasy patch led of the present utility model.

Fig. 7 is a circuit diagram of the connection of the chip IC and the lamp beads in the RGB multicolor patch led of the present utility model.

Fig. 8 to 12 are typical electro-optic characteristics of the RGB magic color patch led of the present utility model.

Fig. 13 is a schematic diagram of a packaging mode of the RGB fantasy patch led of the present utility model.

Fig. 14 is a schematic diagram of the connection of the cascade control of the RGB fantasy patch leds of the present utility model.

Fig. 15 is a schematic diagram of a data transmission method in an RGB multicolor patch led of the present utility model.

Fig. 16 is a schematic diagram of a data structure in an RGB multicolor patch led of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model aims to provide an RGB multicolor patch light-emitting diode aiming at the defects and shortcomings of the prior art.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1-3, the utility model provides an RGB multicolor patch light-emitting diode, which comprises a shell 1, a chip 3, a lamp bead 4 and welding pins, wherein the chip 1 is arranged on a copper plate 2, the chip 1 is provided with the welding pins and is connected with the lamp bead 4 through the welding pins, and the chip 3, the lamp bead 4 and the welding pins are all arranged in the shell 1.

In this embodiment, the chip 1 is connected with a DIN port and a DOUT port, where the DIN port is an input port in the RGB fantasy patch light emitting diode and is configured to receive data sent by an external controller; the DOUT port is used for forwarding data after 48bit data is received through the DIN port after the chip is powered on and reset, and provides an input number for the next chip.

After the chip is powered on and reset, the RGB multicolor patch light-emitting diode receives data from the DIN port, and after receiving 48bit data, the DOUT port starts to forward the data, so as to provide input data for the next chip, and realize cascade control.

In this embodiment, three PWM output ports are provided on the solder pins of the chip, and the three PWM output ports are OUTR, OUTG, OUTB pins in the chip, which respectively form an output port, an OUTB port, and an OUTG port.

In this embodiment, the chip is connected to the red LED, the blue LED and the green LED through three PWM output ports, the output port is used for controlling the brightness of the red LED, the OUTB port is used for controlling the brightness of the blue LED, and the OUTG port is used for controlling the brightness of the green LED. After the chip receives 48bit data, signals with different corresponding duty ratios are sent out according to the received data, and the frequency of the signals is 4kHz. By controlling the duty cycles of the three PWM output ports, a variety of different color mixtures and variations can be achieved.

The DOUT port is pulled low until the data is forwarded. At this time, the chip will not receive new data, and the three PWM output ports of the chip outl_outg_send corresponding signals with different duty ratios according to the received 48bit data, where the signal frequency is 4kHz. Namely: the chip is also used for sending out signals for controlling the duty ratio of the three PWM output ports after receiving 48bit data, and the signal frequency is 4kHz.

If the DIN port input signal is a RESET signal, the chip sends the received data to display, the chip receives new data again after the signal is finished, after receiving the first 48bit data, the chip forwards the data through the DOUT port, before the chip does not receive the RESET code, the original output of the OUTR\OUTG\OUTB pin is kept unchanged, and after receiving the RESET code with the low level of more than 80us, the chip outputs the 48bit PWM data which is just received to the OUTR\OUTG\OUTB pin in a pulse width mode.

In some embodiments, the DIN port is further connected to an external controller, and is configured to receive data sent by the external controller, and control the color and brightness of the RGB fantasy patch light emitting diode to be 4kHz. The chip is communicated with an external controller in a single-wire communication mode, the external controller is connected with the chip through a DIN port, data are sent to the chip through the DIN port, and the color and the brightness of the RGB multicolor patch light-emitting diode are controlled. After the chip receives the data, the data is forwarded to the next chip through the DOUT port, so that cascade control is realized. The single-wire communication mode is adopted, so that the circuit design and layout can be simplified, and the system reliability can be improved.

In this embodiment, the chip sends a signal in a return-to-zero code manner, automatically shapes and forwards data to the next chip, and performs cascade control, so that the number of cascade chips is not limited by signal transmission, and only the screen-brushing speed is limited.

In this embodiment, the chip adopts an automatic shaping and forwarding technology, so that the number of cascaded chips is not limited by signal transmission, and only limited screen-brushing speed is required. For example, a 1024 cascade is designed, the screen brushing time is 10240.42 = 0.8192ms (the data delay time of the chip is 0.4 us), and no flicker phenomenon exists. 1010 magic colors use a unipolar return-to-zero code, each symbol must have a low level.

Each symbol of the protocol starts at a high level, the high level time width determining either a "0" code or a "1" code.

It should be noted that, the appearance size of the RGB magic color patch light-emitting diode of the present utility model may be set to 1.0×1.0×0.65mm, the default output constant current value is 3.5mA, the default output constant current value is configured by the controller, the maximum output constant current value is 12mA, the default power-on does not light, the gray level adjusting circuit is 65536 gray level adjustable, and is mainly used for infrared reflow soldering, the structure of the RGB magic color patch light-emitting diode is shown in fig. 4 to 6, and the circuit diagram of the chip IC respectively connected with the red LED, the blue LED and the green LED through three PWM output ports is shown in fig. 7.

The limiting parameters of the RGB multicolor patch led at 25 ℃ are shown in table 1 below:

TABLE 1 limit parameters for RGB multicolor patch LED

Typical optoelectronic parameters of an RGB multicolor patch led at 25 ℃ are shown in table 2 below:

table 2 RGB magic color patch led typical photoelectric parameter table

Typical electro-optic characteristics of an RGB multicolor patch led at 25 ℃ are shown in fig. 8-12. The package mode of the RGB multicolor patch LED is shown in figure 13, an inner label, a dampproof antistatic bag, a desiccant and an outer label are arranged on a chip, and the chip is packaged after dust suction and heat sealing.

The maximum ratings of the parameters in the RGB magic color patch led at 25 ℃ are shown in table 3:

table 3 maximum rating for parameters in RGB multicolor patch led

The electrical parameters of the RGB multicolor patch led at 25 ℃ are shown in table 4:

when the RGB multicolor patch led of the embodiment performs cascade control, the connection mode is shown in fig. 14, and the data transmission method is shown in fig. 15, wherein the data frame D (1) is data sent by the MCU end, and D (2) and D (N) are data automatically shaped and forwarded by the cascade circuit. The data structure is shown in fig. 16.

In some embodiments, the utility model further provides a controller of the RGB multicolor patch light-emitting diode, which comprises a control chip, a gray scale adjusting circuit and an interface component; the interface component is connected with the control chip, and the control chip is used for controlling the color and the brightness of the LED; the gray level adjusting circuit is used for realizing 65536 gray level adjustment of the LEDs in the RGB multicolor patch light-emitting diode, so that the color change is finer and more natural. The control chip also adopts an automatic shaping and forwarding technology, so that the flickering phenomenon is avoided, and the user experience is improved. Therefore, the control chip plays a vital role in the RGB multicolor patch LED system.

In the controller of the RGB multicolor patch LED, the control chip can output a constant value by configuration, the maximum value is 12mA, the LED is powered on by default and is not lighted, the gray scale regulating circuit (65536 gray scale is adjustable), a return-to-zero code mode is adopted to send signals, and an automatic shaping and forwarding technology is adopted, so that the cascade number of the controller is not limited by signal transmission, and only the requirement of screen brushing speed is limited.

The output of the OUTR/OUTG/OUTB pin is kept unchanged before the RESET code is not received by the chip, and the chip outputs the 48bit PWM data pulse which is just received to the OUTR/OUTG/OUTB pin after the RESET code with the low level of more than 80us is received by the chip.

The control chip can also control the color and the brightness of the RGB multicolor patch light-emitting diode, and support various light effects including flickering, gradual change and the like.

Furthermore, the control chip can realize addition and optimization of new functions through software upgrading. The control chip can also control and regulate the light through an external input trigger.

The interface component comprises a DIN interface, a DOUT interface, a RESET interface, a VDD interface, a GND interface, an OUTR/OUTG/OUTB interface and a CLK interface.

The DIN interface is used for receiving data sent by an external controller;

the RESET interface: for resetting the control chip to re-receive new data;

In this embodiment, the control chip supports multiple communication protocols, including SPI, I2C, and the like.

The RGB multicolor patch light-emitting diode is suitable for infrared reflow soldering, can improve production efficiency and product quality, can output a constant current value through the configuration of a controller, is convenient to control brightness and power consumption, supports 65536-level gray scale adjustability, can realize finer color change, adopts a single-wire communication mode, simplifies line design and layout, improves system reliability, supports cascading, has no signal transmission limitation, can realize large-scale application, adopts an automatic shaping and forwarding technology, avoids flickering phenomenon, improves user experience, simplifies data transmission, improves transmission rate and reliability, has DIN, DOUT, RESET, VDD, GND, OUTR/OUTG/OUTB, CLK and other interfaces, realizes accurate control of the RGB multicolor patch light-emitting diode, can realize various dynamic effects and static display, and is widely applied to the fields of LED illumination, advertisement display, stage light and the like.

Therefore, the RGB multicolor patch light-emitting diode has higher practicability and economic benefit, is beneficial to improving the quality and the efficiency of LED illumination and display, and meets the requirements of different application scenes.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. The RGB multicolor patch light-emitting diode comprises a shell, a chip, a lamp bead and welding pins, wherein the welding pins are arranged on the chip and connected with the lamp bead through the welding pins, and the chip, the lamp bead and the welding pins are all arranged in the shell; the method is characterized in that:

the chip is connected with a DIN port and a DOUT port, wherein the DIN port is one input port in the RGB multicolor patch light-emitting diode and is used for receiving data sent by an external controller; the DOUT port is used for forwarding data after 48bit data is received through the DIN port after the chip is powered on and reset, and providing input data for the next chip.

2. The RGB multicolor patch led of claim 1 wherein the solder pins of the die are provided with three PWM output ports, the three PWM output ports being OUTR, OUTG, OUTB pins in the die, forming an output port, an OUTB port, and an OUTG port, respectively.

3. The RGB multicolor patch LED of claim 2 wherein the chips are connected to red, blue and green LEDs through three PWM output ports, respectively, the our port is used to control the brightness of the red LED, the OUTB port is used to control the brightness of the blue LED, and the OUTG port is used to control the brightness of the green LED.

4. The RGB multicolor patch led of claim 3 wherein the DIN port is connected to an external controller for receiving data from the external controller and controlling the color and brightness of the RGB multicolor patch led to 4kHz.

5. The RGB multicolor patch led of claim 4 wherein the chip communicates with an external controller via a single wire communication, the external controller being connected to the chip via a DIN port for transmitting data to the chip via the DIN port for controlling the color and brightness of the RGB multicolor patch led.