LED device with built-in clock and application electric appliance

Abstract

The utility model relates to an LED device with a built-in clock and an application electric appliance, comprising an RGB LED chip set and a driving chip which are packaged on the front surface of a substrate and are electrically connected, and the back surface of the substrate is diagonally provided with a VDD connecting end connected with a VDD pin of the driving chip and a GND connecting end connected with a GND pin of the driving chip; a clock generation circuit for generating a clock signal is integrated in the driving chip, and a clock connection end for transmitting the clock signal and a data connection end for transmitting information data which are correspondingly connected with the driving chip are also arranged on the back surface of the substrate; meanwhile, the utility model discloses an application electric appliance adopting the LED device. The utility model has the advantages of simplified structure, high integration level, strong anti-interference capability and easiness in use.

Description

Technical Field

[0001] This utility model relates to the field of LED devices, and in particular to an LED device with a built-in clock and its application. Background Technology

[0002] With the development of technology, LEDs are widely used in lighting equipment and displays. Traditional LED display systems typically require an additional controller to provide clock and data signals, which increases the system's complexity and cost. Furthermore, the connection between the external controller and the LED devices is susceptible to interference, affecting the display effect. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an LED device with a built-in clock and its application.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an LED device with a built-in clock, including an RGB LED chip group and a driver chip electrically connected and packaged on the front side of a substrate, and a VDD connection terminal connected to the VDD pin of the driver chip and a GND connection terminal connected to the GND pin of the driver chip are arranged diagonally on the back side of the substrate; the driver chip integrates a clock generation circuit for generating clock signals, and the back side of the substrate is also provided with a clock connection terminal for transmitting clock signals and a data connection terminal for transmitting information data, which are corresponding to the driver chip.

[0005] Preferably, the clock connection terminal includes a clock input terminal and a clock output terminal; the data connection terminal includes a data input terminal and a data output terminal.

[0006] Preferably, the RGB LED chipset includes a red LED chip, a green LED chip, and a blue LED chip, which are connected in parallel on the driver chip.

[0007] Preferably, the clock generation circuit includes a crystal oscillator and a frequency divider.

[0008] Preferably, the clock generation circuit is further provided with a Schmitt trigger.

[0009] Preferably, the driver chip includes an input interface circuit, a logic control circuit, and a driver output circuit.

[0010] Preferably, the front side of the substrate is also encapsulated with a Zener diode electrically connected to the driver chip.

[0011] Preferably, a reflective layer is provided on the front side of the substrate surrounding the RGB LED chip group.

[0012] An application appliance includes an LED device as described in any of the preceding claims.

[0013] The beneficial effects of this utility model are as follows: This utility model integrates the clock generation circuit into the driver chip, reducing external components, simplifying the system structure, and reducing costs; the built-in clock is less susceptible to external interference, reducing interference during signal transmission, making the operation more stable, and improving the display effect. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0015] Component names and serial numbers in the diagram: 1-Substrate; 10-VDD connection terminal; 11-GND connection terminal; 12-Clock input terminal; 13-Clock output terminal; 14-Data input terminal; 15-Data output terminal; 2-RGB LED chipset; 3-Driver chip; 4-Zener diode. Detailed Implementation

[0016] The present invention will be further described below with reference to embodiments, providing a clear and complete description. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments may be further adjusted according to the specific conditions of the manufacturer. Implementation conditions not specified are generally those used in conventional experiments. Furthermore, directional terms mentioned in the present invention, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying illustrations. The use of directional terms is for better and clearer explanation and understanding of the present invention, and is not intended to indicate or imply any necessary orientation of the present invention. Therefore, they should not be construed as limitations on the present invention.

[0017] Examples of embodiments of this utility model Figure 1As shown, an LED device with a built-in clock includes an RGB LED chip group 2 and a driver chip 3 electrically connected and packaged on the front side of a substrate 1. The substrate 1 is made of glass or silicon insulating wafer. The RGB LED chip group 2 is configured with one or more groups according to usage requirements. The RGB LED chip group 2 means that it is an LED chip group capable of generating red, green, and blue light. Each group contains a red LED chip, a green LED chip, and a blue LED chip. The red, green, and blue LED chips are connected in parallel to the driver chip 3, which is connected to the RGB LED chip 3 via wires. After the LED chipset 2 is electrically connected, it is surface-mount soldered onto the substrate 1. Finally, encapsulating adhesive is used to encapsulate them onto the substrate 1 to form a whole. On the back of the substrate 1, there are diagonally arranged VDD connection terminals 10 connected to the VDD pin of the driver chip 3 and GND connection terminals 11 connected to the GND pin of the driver chip 3. That is, the VDD connection terminals 10 and GND connection terminals 11 are diagonally arranged on the back of the substrate 1, which facilitates the connection between the LED device and the power supply line. The driver chip 3 integrates a clock generation circuit for generating clock signals. This built-in clock generation circuit allows the LED device to operate without relying on an external clock signal, adapting to independent application scenarios, reducing dependence on external components, lowering system complexity and cost, reducing external interference during signal transmission, and making operation more stable. The clock generation circuit includes a crystal oscillator and a frequency divider. The crystal oscillator generates a stable clock frequency, and the frequency divider divides the clock frequency generated by the crystal oscillator to obtain the required clock signal. The driver chip 3... The device is internally equipped with an input interface circuit, a logic control circuit, and a drive output circuit. The input interface circuit receives signals from the outside and converts them into digital signals that can be processed by the driver chip 3. The logic control circuit generates corresponding control signals based on the input signals and preset control logic. The drive output circuit converts the electrical energy provided by the power supply into current and voltage signals that can drive the external load, thereby controlling the operation of the load. At this time, the input interface circuit, logic control circuit, and drive output circuit are all implemented using existing known circuits. The back of the substrate 1 is also provided with a clock connection terminal for transmitting clock signals and a data connection terminal for transmitting information data, which are connected to the driver chip 3. The clock connection terminal includes a clock input terminal 12 and a clock output terminal 13. The data connection terminal includes a data input terminal 14 and a data output terminal 15. The clock input terminal 12 and the data input terminal 14 are located on the same side of the back of the substrate 1, and the clock output terminal 13 and the data output terminal 15 are located on the opposite side of the back of the substrate 1, which facilitates the connection between multiple LED devices during use.

[0018] Further improvements include a Schmitt trigger in the clock generation circuit. This trigger is used to shape the input signal, eliminating noise and jitter. In this case, the Schmitt trigger is connected to the output of the frequency divider to shape the low-frequency signal and eliminate noise. Alternatively, the Schmitt trigger can be connected to the output of the crystal oscillator to shape the high-frequency clock signal generated by the crystal oscillator and eliminate noise. The shaped high-frequency signal is then passed to the frequency divider, which divides the shaped high-frequency signal into a low-frequency signal. The Schmitt trigger ensures signal quality.

[0019] Further improvements, such as Figure 1 As shown, the front side of the substrate 1 is also encapsulated with a Zener diode 4 that is electrically connected to the driver chip 3. The Zener diode 4 is used to keep the voltage through the driver chip 3 in a stable state, thereby increasing the anti-static capability of the device.

[0020] Further improvements include a reflective layer surrounding the RGB LED chip group 2 on the front side of the substrate 1. The reflective layer is formed by coating reflective adhesive on the front side of the substrate 1, allowing the front side of the substrate 1 to reflect the light emitted by the RGB LED chip group 2, reducing the absorption of light by the substrate 1, increasing the amount of light emitted, and improving the light emission effect. When setting the Zener diode 4 on the substrate 1, a groove is set on the front side of the substrate 1, and then the Zener diode 4 is installed in the groove and connected to the driver chip 3 through wires. Then, the Zener diode 4 is covered by the reflective layer. The plane on which the Zener diode 4 is located is not higher than the plane on which the RGB LED chip group 2 is located, thus avoiding the blocking and absorption of light by the Zener diode 4, thereby improving the luminous brightness and reducing energy consumption.

[0021] An application electrical appliance includes LED devices as described in any of the preceding claims, such as LED displays or smart LED lights. When used in a display screen, the aforementioned multiple devices are arranged and assembled in a matrix structure to form an LED display screen of a certain size, and the number of devices is selected according to the size of the display screen.

[0022] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An LED device with a built-in clock, characterized by, The RGB LED chip group and the driving chip are electrically connected on the front surface of the substrate, VDD connecting ends connected with VDD pins of the driving chip and GND connecting ends connected with GND pins of the driving chip are arranged on the back surface of the substrate in diagonal lines; a clock generating circuit for generating a clock signal is integrated in the driving chip, and clock connecting ends for transmitting the clock signal and data connecting ends for transmitting information data corresponding to the driving chip are arranged on the back surface of the substrate.

2. The LED device of claim 1, wherein, The clock connecting ends comprise clock input ends and clock output ends; and the data connecting ends comprise data input ends and data output ends.

3. The LED device of claim 1, wherein the clock is a temperature compensated crystal oscillator (TCXO). The RGB LED chip group comprises red LED chips, green LED chips and blue LED chips, which are connected in parallel on the driving chip.

4. The LED device of claim 1, wherein the clock is a temperature compensated crystal oscillator (TCXO). The clock generating circuit comprises a crystal oscillator and a frequency divider.

5. The LED device of claim 4, wherein the clock is a temperature compensated crystal oscillator (TCXO). The clock generating circuit is further provided with a Schmitt trigger.

6. The LED device of claim 1, wherein, The driving chip is provided with an input interface circuit, a logic control circuit and a driving output circuit.

7. The LED device of claim 1, wherein the clock is a temperature compensated crystal oscillator (TCXO). The front surface of the substrate is further encapsulated with a Zener diode electrically connected with the driving chip.

8. The LED device of claim 7, wherein the clock is a temperature compensated crystal oscillator (TCXO). The front surface of the substrate is concave with a groove for mounting the Zener diode.

9. The LED device of any of claims 1 to 8, wherein the LED device is a flip chip LED device. A reflecting layer is arranged around the RGB LED chip group on the front surface of the substrate.

10. An electric appliance characterized by comprising: The LED device comprises the LED device as claimed in any one of claims 1 to 9.

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