CN105042363B - A kind of four primary LED light source - Google Patents

Abstract

The invention provides a four-primary-color LED light source, which is characterized in that: it includes a substrate, a white light unit, and at least two three-primary-color light-emitting units; the white-light unit is arranged in the central area of the substrate; each three-primary-color light-emitting unit is respectively arranged around the central area; Each three-primary-color light-emitting unit includes a support cup 1 respectively; each support cup 1 is respectively provided with an accommodating chamber 1, and the accommodating chamber 1 is provided with a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip 1. The light source of the invention saves electric energy, has soft overall luminous effect and uniform light color.

Description

A four-color LED light source

technical field

The invention relates to the technical field of LED lighting, and more specifically, to a four-primary-color LED light source.

Background technique

LED (Light Emitting Diode) has the advantages of low power consumption, long service life and low cost, and has been widely used in lighting, display and other fields. LED light sources can be used as home lighting, scene control in dance halls, bars and other places. At the same time, LED lighting technology is also widely used in indoor environmental protection, such as using LED light sources as light sources for indoor air purification and sterilization devices.

The four-primary-color LED light source includes four light colors of red, green, blue, and white. The commonly used four-primary-color LED light source combines the four light colors of red, green, blue, and white in the same light-emitting unit. White light can make the light source glow more softly, but the red light-emitting chip, green light-emitting chip, blue light-emitting chip and light-emitting chip for generating white light are arranged in a matrix, and the light-emitting chip for generating white light is located at a corner of the light-emitting unit, which can only Mixing light and color with other light-emitting chips in the light-emitting unit, the utilization rate is low, resulting in waste of light resources, which does not conform to the trend of energy conservation and environmental protection in today's society.

The three light colors of red, green and blue can be generated by the red light-emitting chip, the green light-emitting chip and the blue light-emitting chip. However, white light cannot be directly generated by the light-emitting chip. The principle of white light generation is to coat the blue light-emitting chip with yellow phosphor powder, and then excite the yellow phosphor powder through the blue light-emitting chip to generate white light. The existing production method is as follows: a red light-emitting chip, a green light-emitting chip and two blue light-emitting chips are assembled in the same unit, and then a yellow phosphor is applied to the surface of one of the blue light-emitting chips, so that the light source produces red, Green, blue, white four light colors. The manufacturing process of this type of light source is complex and the production efficiency is low. At the same time, because the yellow phosphor has an important influence on the color of white light; however, in actual production, the amount of yellow phosphor applied on the surface of a single blue light-emitting chip is small, and the application area is small, so the application process of the yellow phosphor is difficult, resulting in The color consistency of white light is poor, which seriously affects the luminous effect of the light source.

Contents of the invention

The object of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide a four-primary-color LED light source with high energy saving, soft overall luminous effect, and uniform light color.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a four-primary-color LED light source, characterized in that it includes a substrate, a white light unit, and at least two three-primary-color light-emitting units; the white light unit is arranged in the central area of the substrate; Each three-primary-color light-emitting unit is respectively arranged around the central area; each three-primary-color light-emitting unit includes a support cup 1; each support cup 1 is respectively provided with an accommodation chamber 1, and the accommodation chamber 1 is provided with a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip. chip one.

The light source of the present invention separates the white light emitting part from the light emitting parts of the other three luminous colors to form a white light unit and a three primary color light emitting unit, and then arranges the white light unit and the three primary color light emitting units on the substrate, so that the light source can produce four basic light color effect. In the traditional four-color LED light source, the light-emitting chip that produces white light can only be mixed with other light-emitting chips in the light-emitting unit, making the light emitted by the light-emitting unit softer, and the utilization rate is low, resulting in waste of light resources. In the light source of the present invention, the white light unit located in the central area of the substrate can coincide with the light colors of all the three primary color light-emitting units arranged around it, making the overall light-emitting effect softer, reducing the number of light-emitting chips used to generate white light, and helping to save electric energy , improve the energy efficiency of the light source. The red light-emitting chip, the green light-emitting chip and the blue light-emitting chip are arranged in the support cup one, and the wall of the accommodating cavity has a reflection effect on the red light, green light and blue light, so that the red light, green light and blue light are mixed to reduce light Chromatic aberration, improve the uniformity of light color.

The white light unit is set in the central area of the substrate refers to one of the following two situations: 1. The number of white light units is one, and the white light unit is arranged in the center of the substrate; 2. The number of white light units is multiple, and the white light unit includes A central white light unit arranged in the center of the substrate, and a peripheral white light unit arranged around the central white light unit, both of which are located in the central area of the substrate. The central white light unit can overlap the light color of the surrounding three-primary-color light-emitting units to make the light source more soft; while the peripheral white light unit can increase the proportion of white light in the light color of the light source, making the light color more flexible and changeable.

The red light-emitting chip, green light-emitting chip and blue light-emitting chip are arranged in the shape of "pin". The red light-emitting chip, green light-emitting chip and blue light-emitting chip are arranged in the shape of "pin", which is compact and saves space; at the same time, the light color superposition area of red light, green light and blue light is enlarged, and the light color superposition is more uniform , the overall luminous effect of the light source is good.

The red light-emitting chip, the green light-emitting chip and the blue light-emitting chip are arranged in the shape of "pin", which means that the red light-emitting chip and the blue light-emitting chip are respectively located at the lower part of the "pin", and the green light-emitting chip is located at the bottom of the "pin". The upper part of the "pin" font; each three-color light-emitting unit is respectively arranged on the side where the red light-emitting chip is located close to the central area of the substrate. Since the brightness of the green light-emitting chip is higher than that of the red light-emitting chip and the blue light-emitting chip, the blue light-emitting chip is arranged on the outermost layer, the green light-emitting chip is arranged on the middle layer, and the red light-emitting chip is arranged on the inner layer. The mixing effect of green light, red light and blue light is better, the light source emits light evenly, and the chromatic aberration at the edge of the light spot formed by projection is avoided.

It also includes a controller; each red light-emitting chip is connected in series to form a red light-emitting circuit; each green light-emitting chip is connected in series to form a green light-emitting circuit; each blue light-emitting chip is connected in series to form a blue light-emitting circuit one; the red light-emitting circuit, green light-emitting circuit The ends of the circuit and the blue light-emitting circuit one are electrically connected to the negative pole of the power supply respectively; the heads of the red light-emitting circuit, the green light-emitting circuit and the blue light-emitting circuit one are respectively connected with the controller signal. The controller is used to separately control the current magnitude of the red light-emitting chip, the green light-emitting chip and the blue light-emitting chip one, so that the light source can form multiple light-emitting colors.

For the convenience of processing, the accommodating cavity 1 is also provided with a conductor 1; the two sides of the support cup 1 are respectively provided with pins 1; the red light emitting chip, the green light emitting chip and the blue light emitting chip are respectively passed The conductor one is electrically connected to the pin one. The advantage of this design is that the red light-emitting chip, the green light-emitting chip and the blue light-emitting chip can be firmly and hermetically arranged in the accommodating cavity one, which is beneficial to prolonging the service life and filling the encapsulation glue into the accommodating cavity.

The white light unit includes two bracket cups; the two bracket cups are respectively provided with two accommodating chambers; the second accommodating chamber is provided with a blue light-emitting chip two, and the light-emitting direction of the blue light-emitting chip two is covered with fluorescent packaging glue. The fluorescent encapsulating glue refers to the fluorescent encapsulating glue made by mixing the encapsulating glue and yellow phosphor powder. Compared with the traditional four-primary-color LED light source, the white light-emitting part of the light source of the present invention is separately manufactured into a white light unit, and the method of producing white light can be changed from coating yellow phosphor powder on the blue light-emitting chip 2 to the method of coating the blue light-emitting chip 2 into the cavity 2 The production method of filling the fluorescent encapsulation glue in the middle is beneficial to reduce processing difficulty, improve production efficiency, and improve the consistency of white light color; the fluorescent encapsulation glue can be bonded to the surface of the blue light-emitting chip 2, which is beneficial to improve the sealing of the white light unit degree, prolong the service life.

The mixing weight ratio of the yellow fluorescent powder and the packaging glue is 1:0.6-1. The yellow phosphor and encapsulation glue are mixed in a ratio of 1:0.6~1, which can not only make the phosphor encapsulation glue completely seal the blue light-emitting chip 2, but also improve the sealing degree of the white light unit; and there can be sufficient yellow phosphor, Make the white light unit generate white light with higher brightness.

The blue light-emitting chip 2 is covered with fluorescent encapsulation glue in the light-emitting direction, which means that after the blue light-emitting chip 2 is placed in the accommodation cavity 2, the blue light-emitting chip 2 is electrically connected to the conductor 2, and then placed in the accommodation cavity The second is filled with fluorescent encapsulation glue until the remaining space ratio of the second accommodation chamber is 0-10%, so that the light-emitting direction of the blue light-emitting chip two is covered with the fluorescent encapsulation glue. Filling the cavity 2 with fluorescent encapsulant until the remaining space ratio of the cavity 2 is 0-10%, is beneficial to improve the sealing degree of the white light unit, and at the same time, it is beneficial for the white light unit to generate white light with uniform light color.

The second accommodating chamber is further provided with a conductor 2; pins 2 are respectively provided on both sides of the holder cup 2; the blue light-emitting chip 2 is electrically connected to the pin 2 through the conductor 2. The advantage of such a design is that the blue light-emitting chip 2 can be firmly and hermetically arranged in the accommodating cavity 2, which is beneficial to prolong the service life.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. In the light source of the present invention, the white light unit located in the central area of the substrate can coincide with the light colors of all the three primary color light-emitting units arranged around it, making the overall light-emitting effect softer, reducing the number of blue light-emitting chips two, which is conducive to saving Electric energy improves the energy efficiency of the light source; the red light-emitting chip, the green light-emitting chip and the blue light-emitting chip are arranged in the support cup one, and the wall of the accommodating cavity has a reflection effect on the red light, green light and blue light, so that the red light, green light Mix with blue light to reduce light chromatic aberration and improve the uniformity of light color;

2. The red light, green light and blue light of the light source of the present invention have a large light color superimposition area, the light color superposition is uniform, and the overall luminous effect of the light source is good; there will be no color difference at the edge of the light spot formed by projection;

3. The light source of the present invention uses a controller to respectively control the current of the red light-emitting chip, the green light-emitting chip, the blue light-emitting chip 1 and the blue light-emitting chip 2, so that the light source can form a variety of light-emitting colors;

4. The light source of the present invention makes the white light-emitting part into a white light unit separately, and the method of producing white light can be changed from the production method of coating yellow phosphor powder on the blue light-emitting chip 2 to the production method of filling the cavity 2 with fluorescent encapsulation glue , which is beneficial to reduce processing difficulty, improve production efficiency, and improve the consistency of white light color; the fluorescent packaging glue can be bonded to the surface of the blue light-emitting chip 2, which is conducive to improving the sealing degree of the white light unit and prolonging the service life;

5. The light source of the present invention fully encapsulates the blue light-emitting chip 2 with fluorescent packaging glue, and the sealing performance of the white light unit is better; it can make the fluorescent packaging glue completely seal the blue light-emitting chip 2, and improve the sealing degree of the white light unit; There can be enough yellow phosphor powder to make the white light unit produce higher brightness and uniform white light.

Description of drawings

Fig. 1 is the structural representation of light source of the present invention;

Fig. 2 is a structural schematic diagram of a three-primary-color light-emitting unit of the light source of the present invention;

Fig. 3 is a schematic structural view of the white light unit of the light source of the present invention;

Fig. 4 is the circuit principle diagram of light source of the present invention;

Fig. 5 is a schematic structural view of the light source of Embodiment 2;

Among them, 10 is a substrate, 20 is a three-color light-emitting unit, 21 is a red light-emitting chip, 22 is a green light-emitting chip, 23 is a blue light-emitting chip 1, 24 is a bracket cup 1, 25 is a conductor 1, 26 is a pin 1 , 30 is a white light unit, 31 is a blue light-emitting chip 2, and 32 is a bracket cup 2.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment one

The light source of this embodiment can be applied to LED lamps such as LED bulb lamps, and can also be applied to technical fields such as indoor air purification and sterilization devices. The structure of the light source is shown in FIG. 1 ; In this embodiment, three three primary color light emitting units 20 and one white light unit 30 are taken as examples for illustration. In practical applications, there are only two or more three-primary-color light-emitting units 20 , but not limited to three; the number of white light units 30 is more than two.

The white light unit 30 is disposed at the center of the substrate 10 ; the three primary color light emitting units 20 are respectively arranged around the white light unit 30 . Each three-primary-color light-emitting unit 20 includes a support cup 1 24 respectively, as shown in FIG. Chip one 23. The white light unit 30 includes a bracket cup 2 32, as shown in FIG. 3 . The holder cup 2 32 is provided with an accommodating cavity 2; a blue light-emitting chip 2 31 is arranged in the accommodating cavity 2, and the light-emitting direction of the blue light-emitting chip 31 is covered with fluorescent encapsulation glue.

The light source of the present invention integrates the three primary color light emitting parts into one light emitting unit to form the three primary color light emitting unit 20 ; independently sets the white light emitting part as a light emitting unit to form the white light unit 30 . Two kinds of light emitting units are arranged on the substrate 10 to form a light source, so that the light source can produce four basic light colors.

The currently commonly used four-primary-color LED light source integrates the three-primary-color light-emitting part and the white light-emitting part in the same light-emitting unit. At present, the principle of white light generation is to excite yellow phosphor powder through a blue light-emitting chip to produce white light; therefore, it is necessary to coat yellow phosphor powder on the blue light-emitting chip to make a white light-emitting chip; the processing technology requires high technology, and the production efficiency is low. Color consistency is poor. In the present invention, the white light-emitting part is separately manufactured into the white light unit 30, and the method of producing white light can be changed from the method of coating the yellow phosphor powder on the blue light-emitting chip 2 31 to the method of filling the fluorescent encapsulation glue in the accommodation cavity 2, It is beneficial to reduce processing difficulty, improve production efficiency, and improve the consistency of white light and light color. The fluorescent encapsulating glue can be bonded on the surface of the blue light-emitting chip 2 31, which is beneficial to improving the sealing degree of the white light unit 30 and prolonging the service life. In the traditional four-color LED light source, the light-emitting chip that produces white light can only be mixed with other light-emitting chips in the light-emitting unit, making the light emitted by the light-emitting unit softer, and the utilization rate is low, resulting in waste of light resources. In the light source of the present invention, the white light unit located in the center of the substrate can coincide with the light colors of all the three primary color light emitting units arranged around it, making the overall light emitting effect softer, reducing the number of blue light emitting chips 2, which is conducive to saving electric energy and improving The energy efficiency of the light source. The red light-emitting chip 21, the green light-emitting chip 22 and the blue light-emitting chip-23 are arranged in the support cup-24, and the wall of the accommodating chamber-cavity has a reflection effect on the red light, green light and blue light, so that the red light, green light and blue light Mixing, reducing light chromatic aberration, improving the uniformity of light color.

For the convenience of processing, a conductor-25 is also provided in the accommodating cavity; pins-26 are respectively provided on both sides of the bracket cup-24; Body one 25 is electrically connected to pin one 26 . The first accommodation cavity is also filled with encapsulation glue. There is also a conductor 2 in the accommodation chamber 2; pins 2 are respectively provided on both sides of the bracket cup 2 32; the blue light-emitting chip 2 31 is electrically connected to the pin 2 through the conductor 2. The design can set the red light-emitting chip, the green light-emitting chip, the first blue light-emitting chip and the second blue light-emitting chip in a stable and sealed manner, which is beneficial to prolong the service life and facilitates the filling of encapsulating glue and fluorescent encapsulating glue.

Fluorescent encapsulating glue refers to the fluorescent encapsulating glue made by mixing encapsulating glue and yellow phosphor powder. The encapsulation glue can be formed by mixing the existing A glue and B glue. In the traditional process, the blue light-emitting chip 231 is usually coated with yellow phosphor powder, and then filled with common encapsulant for encapsulation. Compared with the traditional technology, the light source of the present invention mixes the encapsulating glue and the yellow phosphor powder to form the fluorescent encapsulating glue and then fills it. The fluorescent encapsulating glue can be tightly bonded to the surface of the blue light-emitting chip 2 31 , and the blue light-emitting chip 2 31 Complete encapsulation can make the white light unit 30 have better sealing performance. The preparation process of the white light unit is simple, the production efficiency is high, and the consistency is good.

The weight ratio of yellow fluorescent powder and packaging glue is 1:0.6-1. The yellow phosphor and encapsulation glue are mixed in a ratio of 1:0.6~1, which can not only make the phosphor encapsulation glue completely seal the blue light-emitting chip 2, but also improve the sealing degree of the white light unit; and there can be sufficient yellow phosphor, Make the white light unit generate white light with higher brightness.

The emission direction of the blue light-emitting chip 2 31 is covered with fluorescent encapsulant means that after the blue light-emitting chip 2 31 is placed in the accommodation cavity 2, the blue light-emitting chip 2 31 is electrically connected to the conductor 2, and then placed in the accommodation cavity The second is filled with fluorescent encapsulant until the remaining space ratio of the accommodation chamber 2 is 0-10%, so that the light-emitting direction of the blue light-emitting chip 2 31 is covered with fluorescent encapsulant. Filling the cavity 2 with fluorescent encapsulant until the remaining space ratio of the cavity 2 is 0-10%, is beneficial to improve the sealing degree of the white light unit 30 and is beneficial to the white light unit 30 to generate white light with uniform light color.

The red light-emitting chip 21, the green light-emitting chip 22 and the blue light-emitting chip one 23 are arranged in the shape of "pin". The red light-emitting chip 21 , the green light-emitting chip 22 and the blue light-emitting chip one 23 are adjacent to each other in pairs, and are arranged compactly to save accommodating space. At the same time, the light color superimposition area of red light, green light and blue light is enlarged, the light color superposition is more uniform, and the overall luminous effect of the light source is good. Specifically, the red light-emitting chip 21 and the blue light-emitting chip one 23 are respectively located at the lower part of the "pin" font, and the green light-emitting chip 22 is located at the upper part of the "pin" font; The side where it is located is set close to the central area of the substrate 10 . Although the red light, green light, and blue light have been mixed in the first chamber, uneven light color may still occur due to insufficient mixing; therefore, further solutions are needed to ensure that the light source achieves a uniform light color effect. Since the brightness of the green light-emitting chip 22 is higher than that of the red light-emitting chip 21 and the blue light-emitting chip, the blue light-emitting chip 23 is arranged on the outermost layer, the green light-emitting chip 22 is arranged on the middle layer, and the red light-emitting chip 21 is arranged on the outermost layer. In the inner layer, the mixing effect of green light, red light and blue light can be better, the light source can emit light evenly, and the chromatic aberration at the edge of the light spot formed by projection can be avoided.

The light source also includes a controller; as shown in Figure 4, each red light-emitting chip 21 is connected in series to form a red light-emitting circuit; each green light-emitting chip 22 is connected in series to form a green light-emitting circuit; each blue light-emitting chip-23 is connected in series to form a blue light-emitting circuit 1. The blue light-emitting chip 2 31 forms a blue light-emitting circuit 2; the ends of the red light-emitting circuit, the green light-emitting circuit, the blue light-emitting circuit 1 and the blue light-emitting circuit 2 are respectively electrically connected to the negative pole of the power supply; the red light-emitting circuit and the green light-emitting circuit 1, blue light-emitting circuit 1 and head-ends of blue light-emitting circuit 2 are connected to the controller signal respectively. The controller is used to separately control the currents of the red light emitting chip 21, the green light emitting chip 22, the blue light emitting chip one 23 and the blue light emitting chip two 31, so that the light source can form various light emitting colors.

Embodiment two

The structure of the light source of this embodiment is shown in Figure 5, and the difference from Embodiment 1 is that there are multiple white light units 30, and the white light unit 30 includes a central white light unit arranged in the center of the substrate, and a periphery arranged around the central white light unit The white light unit, the central white light unit and the peripheral white light unit are all located in the central area of the substrate. The central white light unit can overlap the light color of the surrounding three-primary-color light-emitting units to make the light source more soft; while the peripheral white light unit can increase the proportion of white light in the light color of the light source, making the light color more flexible and changeable. The rest of the structure of this embodiment is the same as that of Embodiment 1.

Embodiment three

The light source in this embodiment includes a substrate, at least two three primary color light emitting units and at least one white light unit; the white light unit is arranged in the central area of the substrate; each three primary color light emitting units are respectively arranged around the central area; each three primary color light emitting units respectively include bracket cups 1. Each support cup 1 is respectively provided with an accommodating chamber 1, and the accommodating chamber 1 is provided with a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip 1. The light source of this embodiment achieves the effect of producing four basic light colors; the white light unit located in the central area of the substrate can coincide with the light colors of all the three primary color light-emitting units arranged around it, making the overall light-emitting effect softer and reducing the number of blue light-emitting chips. The quantity of two is conducive to saving electric energy and improving the energy efficiency of the light source.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (3)

1. A kind of 1. four primary LED light source, it is characterised in that：Including substrate and white light unit, and at least two three-color light-emittings Unit；White light unit is arranged on the middle section of substrate；Each three-color light-emitting unit is laid around middle section respectively, and respectively Individual three-color light-emitting unit is respectively on substrate；Each three-color light-emitting unit includes carrier cup one respectively；Each carrier cup One offers accommodating chamber one respectively, and emitting red light chip, green emitting chip and blue luminescence chip are provided with accommodating chamber one One；

   The emitting red light chip, green emitting chip and blue luminescence chip one are arranged in " product " font；

   Described emitting red light chip, green emitting chip and blue luminescence chip one refers to that red is sent out in the arrangement of " product " font Optical chip and blue luminescence chip one are located at the bottom of " product " font respectively, and green emitting chip is located at the top of " product " font； Each three-color light-emitting unit is set with middle section of the side where emitting red light chip close to substrate respectively, to realize indigo plant Color luminescence chip one is arranged on outermost layer, and green emitting chip is arranged on intermediate layer, and emitting red light chip is arranged on compared with internal layer；

   The white light unit includes carrier cup two；Carrier cup two offers accommodating chamber two respectively；Blueness is provided with accommodating chamber two Luminescence chip two, and covered with fluorescence packaging plastic on the light emission direction of blue luminescence chip two；The fluorescence packaging plastic refer to by The fluorescence packaging plastic that packaging plastic is mixed with yellow fluorescent powder；

   Electric conductor one is additionally provided with the accommodating chamber one；The both sides of the carrier cup one are respectively equipped with pin one；The red hair Optical chip, green emitting chip and blue luminescence chip one are electrically connected by the electric conductor one with pin one respectively；

   The part by weight of yellow fluorescent powder and the packaging plastic mixing is 1：0.6~1；

   Electric conductor two is additionally provided with the accommodating chamber two；The both sides of the carrier cup two are respectively equipped with pin two；The blueness hair Optical chip two is electrically connected by the electric conductor two with pin two；

   Refer on the light emission direction of described blue luminescence chip two covered with fluorescence packaging plastic, blue luminescence chip two is set After accommodating chamber two, blue luminescence chip two is electrically connected with electric conductor two, fills fluorescence packaging plastic in accommodating chamber two afterwards Until the remaining space rate of accommodating chamber two is 0~10%, make to encapsulate covered with fluorescence on the light emission direction of blue luminescence chip two Glue.
2. 2. four primary LED light source according to claim 1, it is characterised in that：Described white light unit is arranged on substrate Middle section refers to using one of the following two kinds situation：First, the quantity of white light unit is one, and white light unit is set in a substrate The heart；2nd, the quantity of white light unit is multiple that white light unit includes the center white light unit for being arranged on substrate center, and surrounds The peripheral white light unit that center white light unit is set, center white light unit and peripheral white light unit are respectively positioned on the central area of substrate Domain.
3. 3. four primary LED light source according to claim 1, it is characterised in that：Also include controller；Each emitting red light core Piece is sequentially connected in series to form emitting red light circuit；Each green emitting chip is sequentially connected in series to form green emitting circuit；Each blueness Luminescence chip one is sequentially connected in series to form blue-light-emitting circuit one；The emitting red light circuit, green emitting circuit and blue-light-emitting The end of circuit one electrically connects with power cathode respectively；The emitting red light circuit, green emitting circuit and blue-light-emitting circuit One head end is connected with controller signals respectively.