Integrated light source with fantasy color IC

Abstract

The integrated light source comprises a substrate, an input terminal, a box dam and light-emitting units, the box dam and the input terminal located outside the box dam are arranged on the substrate, a plurality of light-emitting units are arranged in the box dam, each light-emitting unit comprises a multicolor driving IC and a set of LED chips, the multicolor driving IC is electrically connected with the positive electrode of each LED chip, the input terminal is electrically connected with the input terminal, and the light-emitting units are electrically connected with the input terminal. The plurality of light-emitting units are connected in series through the sequential connection of the adjacent fantasy color driving ICs; a positive electrode wire, a negative electrode wire and a data wire are arranged on the substrate, and the positive electrode wire is electrically connected with the positive electrode of each multicolor driving IC; the negative electrode wire is electrically connected with the negative electrode of each multicolor driving IC and the negative electrode of each LED chip. One end of the data line is electrically connected with the data input end of the first multicolor driving IC; the other end of the positive electrode wire, the other end of the negative electrode wire and the other end of the data wire extend out of the box dam and are electrically connected with the power source positive electrode pin, the power source negative electrode pin and the data pin of the input terminal respectively, each light-emitting unit comprises one dimming module, independent dimming can be achieved only through one data wire, 256-level gray scale adjustment can be achieved through a single LED, and the light-emitting efficiency is improved. And light colors with different brightness and different color coordinates can be modulated to form a bright and colorful light effect.

Description

Technical Field

[0001] The present invention relates to the technical field of LED light sources, and particularly to an integrated light source with a magic color IC. Background Art

[0002] The built-in IC magic color LED is an intelligent externally controlled LED light source integrating a control circuit and a light-emitting circuit, and each element is a pixel point. Each element uses a four-channel LED driving IC (control chip), which internally integrates a power supply module, a signal decoding module, an oscillation module, a data regeneration module, an output current driving module, etc. It can realize the individual gray scale control of the chip through the control of the peripheral MCU, and realize the color dot matrix light-emitting control of the outdoor large screen through cascade control. The built-in IC magic color LED adopts a high-precision and high-stability oscillator and uses a single-wire communication method and a return-to-zero code method to send signals. The output dimming adopts PWM dimming technology, effectively ensuring the color consistency of each pixel point. In addition, the IC adopts an automatic shaping and forwarding technology, so that the number of cascaded LEDs is not limited by signal transmission.

[0003] In the existing dimmable integrated light source, there is only a light-emitting unit in the light source, without a driving unit, and corresponding driving is required to achieve dimming, and only shunt dimming can be performed, that is, all LEDs on the same branch are dimmed synchronously, and precise dimming of a single LED cannot be achieved, and the dimming effect is not good. Summary of the Invention

[0004] In view of the above problems, the present invention discloses an integrated light source with a magic color IC, which solves the problem that precise dimming of a single LED cannot be achieved in the prior art and the dimming effect is not good.

[0005] The specific technical solutions are as follows:

[0006] An integrated light source with a magic color IC includes a substrate, input terminals, dams, and light-emitting units. Dams and input terminals located outside the dams are arranged on the substrate. A plurality of light-emitting units are evenly arranged and distributed within the dams. Each light-emitting unit includes a magic color driving IC and a group of LED chips. The magic color driving ICs are respectively electrically connected to the positive electrodes of each LED chip. A series connection is formed by sequentially connecting the adjacent magic color driving ICs among the plurality of light-emitting units; a positive electrode wire, a negative electrode wire, and a data wire are provided on the substrate. The positive electrode wire is respectively electrically connected to the positive electrode of each magic color driving IC; the negative electrode wire is respectively electrically connected to the negative electrode of each magic color driving IC and the negative electrode of each LED chip; one end of the data wire is electrically connected to the data input terminal of the first magic color driving IC; the other ends of the positive electrode wire, the negative electrode wire, and the data wire extend outside the dams and are respectively electrically connected to the power supply positive pin, the power supply negative pin, and the data pin of the input terminal.

[0007] Furthermore, the substrate is a quadrilateral aluminum substrate, and copper foil circuits are etched on the substrate. The copper foil circuits include the positive electrode line, the negative electrode line, and the data line.

[0008] Furthermore, the number of each group of LED chips in each lighting unit is three, which are respectively a green LED chip, a red LED chip, and a blue LED chip.

[0009] Furthermore, there are 7 electrodes on the surface of the RGB driving IC. The 7 electrodes are respectively the positive power terminal, the negative power terminal, the data input terminal, the data output terminal, the red LED driving output terminal, the green LED driving output terminal, and the blue LED driving output terminal.

[0010] Furthermore, the red LED driving output terminal, the green LED driving output terminal, and the blue LED driving output terminal of the RGB driving IC are respectively bonded to the red LED chip, the green LED chip, and the blue LED chip through metal wires; the positive power terminal and the negative power terminal of the RGB driving IC are respectively bonded to the positive electrode line and the negative electrode line through metal wires; the data output terminals and data input terminals between adjacent RGB driving ICs are sequentially bonded to each other through metal wires to form a series connection.

[0011] Furthermore, several lighting units are distributed at intervals in a row matrix, and the positive electrode line and the negative electrode line located within the dam are both arc-shaped and are respectively located on both sides of several lighting units.

[0012] Furthermore, the dam is filled with encapsulant, and the encapsulant is transparent or matte.

[0013] Compared with the prior art, the present application adopts the above technical solutions and has the following technical effects:

[0014] 1. The present application adopts single-wire communication. Each lighting unit contains a dimming module. Only one data line is needed to easily achieve precise dimming control without the need for a separate dimming driver, simplifying the system architecture and making system deployment more efficient and convenient.

[0015] 2. The present application can achieve individual dimming for each lighting unit. Each single LED can achieve 256-level gray scale adjustment, and lights of different brightness and color coordinates can be modulated to form a colorful lighting effect, meeting the personalized needs of different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present application.

[0017] Figure 2 is an enlarged view of the lighting unit in the present invention.

[0018] Description of reference numerals in the drawings: 1 - substrate, 2 - input terminal, 3 - positive electrode line, 4 - negative electrode line, 5 - data line, 6 - dam, 7 - magic color driving IC, 8 - LED chip, 9 - encapsulant, 801 - green LED chip, 802 - red LED chip, 803 - blue LED chip. Detailed implementation manners

[0019] To make the technical solution of the present invention clearer and more definite, the present invention will be further described below with reference to the drawings. Any solution obtained by equivalent replacement of the technical features of the technical solution of the present invention and through conventional reasoning falls within the protection scope of the present invention. The fixed connection and fixed setting mentioned in the present invention are all common connection methods in the mechanical field, and welding, bolt - nut connection, and screw connection are all applicable.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0021] Please refer to the attached Figure 1-2 , this embodiment provides an integrated light source with a magic color IC, including a substrate 1, an input terminal 2, a dam 6, and a light - emitting unit. The substrate 1 is a quadrilateral aluminum substrate 1, and copper - foil circuits are etched on the substrate 1. The copper - foil circuits include the positive electrode line 3, the negative electrode line 4, the data line 5, and pads for connecting the input terminal 2. The input terminal 2 is arranged at one corner of the substrate 1, and the dam 6 is arranged in the middle of the substrate 1. A plurality of light - emitting units are evenly arranged and distributed within the dam 6. Each light - emitting unit includes a magic color driving IC 7 and a group of LED chips 8. The magic color driving IC 7 is electrically connected to the positive electrode of each LED chip 8 through a metal wire respectively. The plurality of light - emitting units are connected in series by wire bonding between adjacent magic color driving ICs 7 in sequence through metal wires.

[0022] The positive electrode line 3 is electrically connected to the positive electrode of each magic color driving IC 7 respectively; the negative electrode line 4 is electrically connected to the negative electrode of each magic color driving IC 7 and the negative electrode of each LED chip 8 respectively; one end of the data line 5 is electrically connected to the data input terminal of the first magic color driving IC 7; the other ends of the positive electrode line 3, the negative electrode line 4, and the data line 5 extend outside the dam 6 and are electrically connected to the power positive - electrode pin, the power negative - electrode pin, and the data pin of the input terminal 2 respectively.

[0023] In this embodiment, several light-emitting units are distributed at intervals in a row, and both the positive electrode line 3 and the negative electrode line 4 located within the dam 6 are arc-shaped and are respectively located on both sides of several light-emitting units.

[0024] In this embodiment, the number of each group of LED chips in each light-emitting unit is three, namely a green LED chip 801, a red LED chip 802, and a blue LED chip 803. The surface of the color-changing driving IC 7 is provided with 7 electrodes, which are respectively a positive power supply terminal, a negative power supply terminal, a data input terminal, a data output terminal, a red LED driving output terminal, a green LED driving output terminal, and a blue LED driving output terminal.

[0025] The red LED driving output terminal, the green LED driving output terminal, and the blue LED driving output terminal of the color-changing driving IC 7 are respectively bonded and connected to the positive electrode ends of the red LED chip 802, the green LED chip 801, and the blue LED chip 803 through metal wires. The positive power supply terminal and the negative power supply terminal of the color-changing driving IC are respectively bonded and connected to the positive electrode line 3 and the negative electrode line 4 through metal wires. The connection method between the color-changing driving ICs 7 is as follows: the data input terminal of the first color-changing driving IC 7 is connected to one end of the data line 5, the data output terminal of the first color-changing driving IC is connected to the data input terminal of the second color-changing driving IC, and so on. The data output terminals and data input terminals between the remaining adjacent color-changing driving ICs are respectively bonded and connected in sequence through metal wires to form a series connection. And the negative electrodes of the red LED chip 802, the green LED chip 801, and the blue LED chip 803 are respectively bonded and connected to the negative electrode line 4 through metal wires.

[0026] In this embodiment, the dam 6 is filled with a packaging adhesive 9 which covers the color-changing driving IC 7, the LED chips 8, and the metal wires. The packaging adhesive is transparent or matte.

[0027] The following is a manufacturing process of an integrated light source with a color-changing IC in this embodiment:

[0028] Step 1: On the aluminum substrate, etch a copper foil circuit including input terminal pads, a positive electrode line, a negative electrode line, and a data line.

[0029] Step 2: Apply solder paste at the input terminal pads, place the input terminals, and install them on the substrate through a reflow soldering process.

[0030] Step 3: Use a die bonder to sequentially place the color-changing driving IC, the red LED chip, the green LED chip, and the blue LED chip at the specified positions on the substrate.

[0031] Step 4: Bake in an oven to cure the die bonding glue.

[0032] Step 5: Use a wire bonding machine to connect the positive power terminal, negative power terminal, data input terminal, data output terminal, red LED drive output terminal, green LED drive output terminal, and blue LED drive output terminal of the RGB driver IC to the positive electrode wire, negative electrode wire, data input wire, data output wire, positive electrode of the red LED chip, positive electrode of the green LED chip, and positive electrode of the blue LED chip respectively through metal wires; connect the negative electrodes of the red LED chip, green LED chip, and blue LED chip to the negative electrode wire through metal wires.

[0033] Step 6: Use a dispensing machine to apply dam glue on the substrate in a circular shape with the center point of the substrate as the center and a radius of R.

[0034] Step 7: Bake in an oven to cure the dam glue.

[0035] Step 8: Use a dispensing machine to apply encapsulation glue inside the dam glue so that the encapsulation glue completely covers the RGB driver IC, LED chips, and metal wires.

[0036] Step 9: Bake in an oven to cure the encapsulation glue.

[0037] Step 10: Use an optoelectronic parameter tester to test the finished product and retain the qualified finished product light sources.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An integrated light source with a colorful IC, characterized in that: The invention comprises a substrate (1), an input terminal (2), a dam (6), and a light-emitting unit. The substrate (1) is provided with a dam (6) and an input terminal (2) located outside the dam (6). A plurality of light-emitting units are evenly arranged and distributed inside the dam (6). Each light-emitting unit comprises a magic color driving IC (7) and a group of LED chips (8). The magic color driving IC (7) is electrically connected to the positive electrode of each LED chip (8). The plurality of light-emitting units are connected in series via adjacent magic color driving ICs (7). The substrate (1) is provided with a positive electrode line (3), A negative electrode line (4) and a data line (5); the positive electrode line (3) is electrically connected to the positive electrode of each magic color driving IC (7); the negative electrode line (4) is electrically connected to the negative electrode of each magic color driving IC (7) and the negative electrode of each LED chip (8); one end of the data line (5) is electrically connected to the data input end of the first magic color driving IC (7); the other ends of the positive electrode line (3), the negative electrode line (4) and the data line (5) extend outside the dam (6) and are electrically connected to the positive power pin, the negative power pin and the data pin of the input terminal (2).

2. An integrated light source with a colorful IC as claimed in claim 1, characterized in that: The substrate (1) is a quadrilateral aluminum substrate (1), and a copper foil circuit is etched on the substrate (1), and the copper foil circuit includes the positive electrode line (3), the negative electrode line (4), and the data line (5).

3. The integrated light source with a colorful IC as claimed in claim 1, characterized in that: Each group of LED chips (8) in each light-emitting unit has three LED chips, which are a green LED chip (801), a red LED chip (802) and a blue LED chip (803).

4. The integrated light source with a colorful IC as claimed in claim 3, characterized in that: The surface of the magic color driving IC (7) is provided with 7 electrodes, which are respectively a positive power supply terminal, a negative power supply terminal, a data input terminal, a data output terminal, a red LED driving output terminal, a green LED driving output terminal, and a blue LED driving output terminal.

5. The integrated light source with a colorful IC as claimed in claim 4, characterized in that: The red LED driving output end, the green LED driving output end and the blue LED driving output end of the magic color driving IC (7) are respectively bonded to the red LED chip (802), the green LED chip (801) and the blue LED chip (803) through metal wires; the positive power supply end and the negative power supply end of the magic color driving IC (7) are respectively bonded to the positive electrode wire (3) and the negative electrode wire (4) through metal wires; and the data output ends and data input ends of adjacent magic color driving ICs (7) are respectively bonded to each other in sequence through metal wires to form a series connection.

6. The integrated light source with a colorful IC as claimed in claim 1, characterized in that: The plurality of light-emitting units are arranged at intervals in a determinant pattern, and the positive electrode wires (3) and the negative electrode wires (4) located in the dam (6) are both arranged in an arc shape and are respectively located on both sides of the plurality of light-emitting units.

7. The integrated light source with a colorful IC as claimed in claim 1, characterized in that: The dam (6) is filled with packaging glue (9), and the packaging glue is transparent or matte.

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