CN107883199A - Light source body and application of OFED structure containing organic green light photoluminescent material and inorganic red light and yellow light phosphor composition - Google Patents

Abstract

The invention relates to a light source body with an OFED structure, which contains an organic green light photoluminescence material, an inorganic red light and yellow light fluorescent powder composition, wherein the light source body comprises a PCB (printed circuit board) and a plurality of L ED light emitting devices arranged on the PCB, each L ED light emitting device comprises a L ED chip and a photoluminescence layer arranged above the L ED chip, the photoluminescence layer comprises at least one organic photoluminescence material, and the at least one organic photoluminescence material can emit light with longer wavelength under the excitation of the L ED chip.

Description

Composition containing organic green light photoluminescent material and inorganic red light and yellow light phosphor powder Light source body and application of OFED structure

technical field

The invention relates to the technical field of lighting sources, in particular to a light source body with an OFED structure containing an organic green photoluminescence material and inorganic red and yellow phosphors and an application thereof.

Background technique

Since the invention of the incandescent lamp, the development of electric light source technology has a history of more than 100 years. Among them, Light emitting diode (LED) technology has the advantages of low power consumption, long life, and easy recycling. It is recognized as the best light source in the future and has won the favor of the market and consumers in the field of lighting. In the past few decades, with the continuous progress of LED materials and packaging technology, the brightness of LED products has been continuously improved, and the application has become more and more extensive.

The structure of traditional white LED light sources can be roughly divided into the following three types:

(1) The blue LED chip excites the yellow inorganic phosphor structure;

(2) The ultraviolet LED chip simultaneously excites the red, green and blue three-color inorganic phosphor structure;

(3) Red, green and blue three-color LED integrated structure.

However, no matter what kind of structure the white light LED light source adopts, there are the following defects: First, it has the technical characteristics of narrow spectrum and high brightness. It is highly irritating and easy to cause eye damage; second, the narrow-spectrum light has poor color rendering, cannot restore the true color, and is easy to cause illusions; third, the spectrum of LED is discontinuous, the wavelength is single, and the short-wavelength The spectral energy is very high. Long-term exposure to strong light in one wavelength band will inevitably reduce the ability to distinguish other colors, and may cause problems such as color weakness.

With the continuous improvement of the quality of life, health has become a topic of increasing concern. On this basis, the ability to protect the eyes is an important criterion for selecting household lamps. All countries in the world have paid enough attention to this issue. For example, the American Medical Association has just passed an official statement on LED street lamps this year, suggesting that the color temperature and brightness of a new street lamp should be reduced, and that the color temperature of street lamps should not exceed 3000K, otherwise it means more short-wave blue light, which may be harmful to health. cause harm. The latest national standard for lamps and lanterns in my country, GB700.1-2015, also clearly stipulates the hazard level of blue light.

At present, from a technical point of view, considering various factors such as the spectral continuity of the light source, color temperature, strobe, brightness distribution, blue light and red light component distribution, there is no real eye-protecting and healthy lamp in the existing market. . The most mainstream LED chips in the international market are 440nm and 450nm chips, which are very compatible with traditional inorganic phosphors. The packaged LEDs have a fixed spectrum and contain a large amount of short-wavelength blue light, which is very harmful to human vision.

In summary, considering the shortcomings of white LEDs in lighting, the improvement of multi-spectrum light-emitting diode technology will be the top priority in the field of LED research in the future.

Contents of the invention

In view of the above problems, the first object of the present invention is to provide an LED-based light source body.

This module is a multi-spectrum light-emitting diode technology of a new type of fluorescent material, referred to as organic light emitting diode technology (Organic Light emitting diode, OLED). This technology combines traditional LED technology with organic photoluminescent materials, and excites a variety of organic photoluminescent materials (including fluorescent light and phosphorescent light) through traditional LED light sources, so that the radiation spectrum of the light source is greatly broadened, creating a soft and healthy environment. White Light Illumination Spectrum.

Compared with the traditional white light source, on the one hand, the product of the present invention improves the color rendering index and color purity of the spectrum through the matching of different organic photoluminescent materials; For the harm to the human eye, a healthy light source in the true sense has been realized. OFED technology will bring major innovations and changes in the fields of daily lighting, bright light sources and healthy eye protection lamps.

The second object of the present invention is to provide a lighting device comprising an LED light source body constructed by applying the above-mentioned OFED technology. The lighting equipment considers various factors such as the spectral continuity of the light source, color temperature, strobe, brightness distribution, blue light and red light component distribution, etc., and can achieve real eye protection effect at the technical level.

In order to solve the above-mentioned first technical problem, the present invention adopts the following technical solutions:

A light source body based on LEDs, including a PCB board and a plurality of LED light emitting devices arranged on the PCB board,

Each of the LED light-emitting devices includes an LED chip and a photoluminescent layer disposed thereon, wherein,

The photoluminescent layer comprises at least one organic green photoluminescent material, at least one inorganic yellow phosphor and at least one inorganic red phosphor.

Preferably, the luminescence of the photoluminescent layer is fluorescence luminescence and/or phosphorescence luminescence.

Preferably, the LED chip is a blue LED chip.

Preferably, the emission wavelength of the blue LED chip is 460-470nm.

Further preferably,

The emission wavelength of the organic green light photoluminescent material is 500-560nm;

The emission wavelength of the inorganic yellow fluorescent powder is 567-595nm;

The emission wavelength of the inorganic red fluorescent powder is 611-650nm.

Further preferably,

The absorption peak wavelength of the inorganic red phosphor is 530-590nm;

The absorption peak wavelength of the organic green photoluminescent material is 450-470nm;

The absorption peak wavelength of the inorganic yellow fluorescent powder is 450-470nm;

Preferably, the organic green photoluminescent material is selected from small organic light-emitting molecules, light-emitting polymers and organic light-emitting complexes, such as (E)-4-((cyanobenzylidene)amino)benzoic acid, 2 ,7-bis(4-pyridyl)-9-fluorenone, 4,7-bis(3,5-di-tert-butylphenyl)-2,1,3-benzothiadiazole, N,N' -Dimethyl-quinacridone and/or 2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-10-(2-benzothiazolyl )-quinazino[9,9A,1GH]coumarin, etc.;

Preferably, the inorganic yellow phosphor or the inorganic red phosphor can be selected from silicate, fluorosilicate, chlorosilicate, aluminate, nitrogen oxide, nitride, tungstate, molybdic acid Salt, sulfur oxide and other series of phosphors, preferably silicate series phosphors, etc. Specific phosphors such as: fluorosilicate red phosphor Y _3.5 Eu _0.83 (SiO ₄ ) ₃ F, fluorosilicate red Optical phosphor Y _3.13 Eu _1.2 (SiO ₄ ) ₃ F, silicate red phosphor Li ₂ Mg _0.07 Eu _0.03 SiO ₄ , silicate red phosphor Li ₂ Mg _0.999 Eu _0.001 SiO ₄ , silicate red Optical phosphor Li ₂ Mg _0.99 Eu _0.01 SiO ₄ , silicate red phosphor Li ₂ Mg _0.995 Eu _0.005 SiO ₄ , silicate red phosphor Ba ₂ Y _2.5 Eu _0.5 [SiO ₄ ] ₃ F, silicic acid Salt red phosphor Li ₂ Mg _0.95 Eu _0.05 SiO ₄ , silicate yellow phosphor (Sr _0.83 Ba _0.14 ) _2.79 SiO ₄ : Eu _0.03 , La _3.98 Ca(SiO ₄ ) ₃ O: 0.02Ce ³⁺ , La _3.9 Ca(SiO ₄ ) ₃ O: 0.1Ce ³⁺ etc.

Preferably, the photoluminescence layer is an encapsulation colloid coated on the LED chip, and the encapsulation colloid is uniformly doped with the organic green photoluminescence material, the inorganic yellow light phosphor and the Inorganic red fluorescent powder.

Preferably, the encapsulating colloid is a solid substance formed by curing a liquid thermosetting glue after being heated, and the thermosetting glue can be selected from epoxy resin, silica gel and the like.

The preparation method of the photoluminescent layer of the present invention can be that the liquid thermosetting adhesive, the organic green light photoluminescent material, the inorganic yellow light phosphor and the inorganic red light phosphor are uniformly mixed according to the proportion. , obtained by heating and curing.

Wherein, the mass ratio of the encapsulating colloid, the organic green photoluminescent material, the inorganic yellow phosphor and the inorganic red phosphor is preferably 1: (0.00001-0.002): (0.15-0.40) : (0.15～0.40).

A preferred composition of the photoluminescent layer includes: encapsulating colloid, organic green light photoluminescent material (E)-4-((cyanobenzylidene)amino)benzoic acid, inorganic yellow fluorescent powder La _3.98 Ca (SiO ₄ ) ₃ O: 0.02Ce ³⁺ , inorganic red phosphor Li ₂ Mg _0.07 Eu _0.03 SiO ₄ ; among them, encapsulating colloid, organic green photoluminescent material, inorganic yellow phosphor, inorganic red phosphor The mass ratio is 1:(0.0001～0.0005):(0.15～0.40):(0.15～0.40).

The preparation method of the LED light-emitting device of the present invention is as follows: after uniformly mixing the liquid thermosetting adhesive, the organic green light photoluminescent material, the inorganic yellow light phosphor and the inorganic red light phosphor according to the proportion, Use a glue dispenser to dispense glue onto the LED chip, that is, package it in a light-emitting cup, and heat and cure the heat-curing glue to obtain it.

Preferably, the white light spectrum emitted by the LED light source body of the present invention is close to the natural light spectrum.

At present, the most common white light LED light source technology is to excite yellow phosphor powder by blue LED chip. The principle of light emission is: the light emitted by the LED chip is absorbed multiple times by the inorganic phosphor powder packaged inside the LED, and is reflected multiple times, and finally emitted to the outside of the lamp. However, the spectrum emitted by this structure is very monotonous, and the color reproduction is poor. Moreover, the excitation spectrum and emission spectrum of the inorganic phosphor have a large shift, and the high color conversion efficiency is low, resulting in poor color rendering index.

The LED light source body designed based on the OFED technology of the present invention solves the above problems well by introducing a suitable organic photoluminescent material. The principle of light emission is: select the appropriate organic photoluminescent material, use the organic photoluminescent material to replace all or part of the inorganic phosphor powder doped in the encapsulation colloid, and rely on the blue LED chip light and the light emitted by the inorganic phosphor powder that may exist. The organic photoluminescent material is further excited to make it emit organic fluorescence or phosphorescence that meets requirements.

Due to the diversity of organic photoluminescent materials, the type, addition amount, proportion and combination of organic light-emitting materials added to the packaging structure can be adjusted arbitrarily according to needs, and even organic photoluminescent materials of different colors can be arbitrarily mixed according to needs and inorganic phosphor, and adjust the concentration and color, so that the final luminescent material composition absorbs the emission spectrum of the blue LED chip as much as possible, reduces energy loss, and adjusts the wavelength range of the emission spectrum to make it as close as possible to the natural light spectrum, Create a white light lighting source that restores true colors and is soft.

On the other hand, the most mainstream LED chips in the international market are 440nm and 450nm chips, because 450nm blue light chips have the highest efficiency in exciting yellow YAG phosphors. However, the LED spectrum packaged in this way is fixed and contains a large amount of short-wavelength blue light. The short-wavelength blue light can penetrate the cornea and lens and reach the macular area of the fundus, causing irreparable damage to the eyeball and causing great damage to human vision. In addition, the inorganic phosphors used generally use rare earth elements as the luminescence center, the mixing ratio is about 30%, the addition amount is large, and the mixing effect of micron-sized phosphor particles and encapsulating colloid is poor, resulting in uneven optical performance of the product , need to increase the sorting process. These all drive up the production cost of the whole device.

In view of the above problems, the LED backlight module designed based on the OFED technology of the present invention can also be well solved. By introducing organic photoluminescent materials, the special luminescent composition of the present invention not only has good absorption for general-purpose 440nm and 450nm chips, but also can adapt to 460, 470nm, etc. The content, type and combination ratio realize the adjustment and customization of LED spectrum. And compared with the dosage of inorganic fluorescent powder as high as 30%, doped with organic fluorescent materials, due to its high light conversion efficiency, its dosage can be reduced by more than a thousand times, and it can be miscible with the packaging colloid, and the product has good uniformity. The sorting process is eliminated. The above beneficial effects make the overall price of LED finished products drop by more than 30%.

To solve the second problem above, the present invention provides the application of the LED-based light source body in lighting.

The present invention adopts following technical scheme:

A lighting device includes the LED-based light source body and a driving IC.

In addition to light efficiency, the ability to protect the eyes is an important criterion for selecting lighting equipment, especially household lamps. However, currently commonly used lamps have many deficiencies in this regard, as shown in Table 1 below:

Table 1 The standard of ideal eye protection lamp and the shortage of current commonly used light sources

Therefore, from a technical point of view, considering various factors such as the spectral continuity of the light source, color temperature, strobe, brightness distribution, blue light and red light component distribution, there is currently no real eye-protecting and healthy lamp.

However, the light-emitting composition in the lighting equipment designed by the present invention can be adapted to chips such as 440nm, 450nm, 460nm, and 470nm, and through the deployment of various organic photoluminescent materials or combinations of organic and inorganic light-emitting materials, LED The adjustable and customized spectrum can perfectly meet the requirements of spectral continuity, low color temperature, less blue light components, and less infrared components. At the same time, through the design of the packaging structure, the scattering of the light source is more uniform, so as to obtain an ideal healthy light source and provide maximum protection for the eyes. Sorted from the angle of meeting the requirements of eye protection lamps: OFED light source of the present invention>candle>incandescent lamp>yellow energy-saving lamp>white energy-saving lamp>yellow LED lamp>white LED lamp.

Therefore, the lighting equipment of the present invention contains all color characteristics in the emitted spectrum, and has a high color rendering index, and Ra can be adjusted to 100 according to needs; using ≥ 460nm blue light chips greatly reduces the harm of blue light, and has no infrared light Harm, can obtain softer light-emitting lamps; reduce the difficulty of multi-spectrum LED chip processing, process preparation is simple, cost controllable, and through circuit design, can avoid stroboscopic hazards. As an extended application of the OFED technology, the lighting device of the present invention can prepare healthy light sources in a true sense, and realize innovation and transformation of light sources.

Beneficial effects of the present invention:

1. Organic photoluminescent materials have strong spectral diversity.

The color and absorption spectrum of the photoluminescent layer material composition of the present invention can be adjusted arbitrarily, and luminescent materials of different colors can be mixed arbitrarily, and the concentration and color can be adjusted, so as to obtain the required LED spectrum.

2. Excellent chip adaptability.

The mainstream chips in the international market are 440nm and 450nm chips, which are very compatible with traditional inorganic phosphors. The special luminescent composition of the present invention can be adapted to 440, 450, 460, 470nm and other chips, and can adjust and customize the LED spectrum by adjusting the content of the luminescent composition and different processes.

3. Healthy light source.

Compared with traditional white LEDs, OFED improves color purity and spectral width, has a higher color rendering index and lower blue light pollution, and truly realizes a healthy light source.

4. High light efficiency and low energy consumption.

Compared with traditional LEDs, OFED can obtain higher brightness and higher luminous efficiency under the same power due to its wider spectrum and more balanced distribution. According to the test, under the same brightness condition, the energy consumption of OFED light source can save 15%-50% compared with traditional LED.

5. Low cost.

Compared with conventional LEDs, the amount of photoluminescent materials used in the technical solution of the present invention can be reduced by more than one thousand times, which is the first level in the world. Through this core technology, the overall price of LED can be reduced by more than 30%. At the same time, the preparation process of OFED lighting equipment is relatively simple, and the production cost is relatively controllable.

6. Relatively stable performance

The organic photoluminescent materials used in OFED lighting equipment only participate in the light-excited fluorescence or phosphorescence radiation, and their stability is higher than that of OLED products.

Description of drawings

Fig. 1 shows a traditional packaging structure of a white LED light source body in the prior art. Among them, 1-light-emitting cup, 2-encapsulating colloid, 3-inorganic phosphor, 4-PCB board, 5-LED chip.

Fig. 2 shows the packaging structure of the white LED light source body in the present invention. Among them, 1-light-emitting cup, 2-encapsulating colloid, 3-inorganic phosphor, 4-PCB board, 5-LED chip, 6-organic green photoluminescent material.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the anti-counterfeiting method and system provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. In these drawings, the same reference numerals are assigned to the same or corresponding components. The following are only the best implementation modes of the anti-counterfeiting method and system of the present invention, and the present invention is not limited to the following content.

Example 1

As shown in Figure 2, an LED-based light source body includes a PCB board 4 and an LED light-emitting device arranged on the PCB board 4, and the LED light-emitting device includes a blue LED chip 5 and a photoluminescent layer arranged above it ;

The photoluminescent layer is an encapsulant 2 coated above the LED chip. The encapsulant 2 is loaded in the luminescent cup 1 with a coating thickness of 0.3 mm. The encapsulant 2 is evenly doped with organic green light. Photoluminescence material 6, inorganic fluorescent powder 3 (inorganic red fluorescent powder+inorganic yellow fluorescent powder).

The emission wavelength of the blue LED chip is 465nm.

The organic green photoluminescent material is (E)-4-((cyanobenzylidene)amino)benzoic acid (for its preparation method, refer to Chinese patent application 201610307169.0); its emission wavelength is 540nm.

The inorganic red phosphor is silicate red phosphor Li ₂ Mg _0.07 Eu _0.03 SiO ₄ (for its preparation method, refer to Chinese patent application 201710291161.4); its emission wavelength is 613nm.

The inorganic yellow fluorescent powder is La _3.9 Ca(SiO ₄ ) ₃ O:0.1Ce ³⁺ (for its preparation method, refer to Chinese patent application 201110060588.6); its emission wavelength is 560nm.

The preparation method of the LED light-emitting device described in this embodiment is: liquid KMT-2091 epoxy resin, organic green photoluminescent material, inorganic red phosphor, and inorganic yellow phosphor in a mass ratio of 1:0.0005:0.2 : 0.15 After mixing evenly, it is obtained by heating and curing. The heating temperature is 130°C and the heating time is 4h.

The LED-based light source body described in Embodiment 1 can be used for lighting, and together with the driving IC to form lighting equipment, its wavelength continuity is greatly improved compared with traditional white LEDs, and the color temperature is 2842K, which has better eye protection effect.

Example 2

As shown in Figure 2, an LED-based light source body includes a PCB board 4 and an LED light-emitting device arranged on the PCB board 4, and the LED light-emitting device includes a blue LED chip 5 and a photoluminescent layer arranged above it ;

The photoluminescent layer is an encapsulant 2 coated above the LED chip. The encapsulant 2 is loaded in the luminescent cup 1 with a coating thickness of 0.3 mm. The encapsulant 2 is evenly doped with organic green light. Photoluminescence material 6, inorganic fluorescent powder 3 (inorganic red fluorescent powder+inorganic yellow fluorescent powder).

The emission wavelength of the blue LED chip is 470nm.

The organic green photoluminescent material is (E)-4-((cyanobenzylidene)amino)benzoic acid (for its preparation method, refer to Chinese patent application 201610307169.0); its emission wavelength is 540nm.

The inorganic red phosphor is silicate red phosphor Li ₂ Mg _0.07 Eu _0.03 SiO ₄ (for its preparation method, refer to Chinese patent application 201710291161.4); its emission wavelength is 613nm.

The inorganic yellow fluorescent powder is La _3.98 Ca(SiO ₄ ) ₃ O:0.02Ce ³⁺ (for its preparation method, refer to Chinese patent application 201110060588.6); its emission wavelength is 555nm.

The preparation method of the LED light-emitting device described in this embodiment is: liquid KMT-2091 epoxy resin, organic green photoluminescent material, inorganic red phosphor, and inorganic yellow phosphor in a mass ratio of 1:0.0002:0.15 : 0.4 After mixing evenly, it is obtained by heating and curing. The heating temperature is 130°C and the heating time is 4h.

The LED-based light source body described in Embodiment 2 can be used for lighting, and together with the driving IC to form a lighting device, its wavelength continuity is greatly improved compared with traditional white LEDs, and the color temperature is 2790K, and the eye protection effect is better.

Example 3

It is basically the same as Example 2, the only difference is that the preparation method of the LED light-emitting device described in this example is: liquid KMT-2091 epoxy resin, organic green light photoluminescent material, inorganic red phosphor, inorganic yellow The optical phosphor powder is obtained by mixing uniformly according to the mass ratio of 1:0.0005:0.15:0.15, and heating and curing. The heating temperature is 130° C., and the heating time is 4 hours.

The LED-based light source body described in Embodiment 3 can be used for lighting, and together with the driving IC to form lighting equipment, its wavelength continuity is greatly improved compared with traditional white LEDs, and the color temperature is 2712K, which has better eye protection effect.

comparative example

As shown in Figure 1, a kind of light source body based on LED, comprises PCB board 4 and the LED light-emitting device that is arranged on PCB board 4, and described LED light-emitting device comprises blue light LED chip 5 and is arranged on the photoluminescent layer above it ;

The photoluminescent layer is an encapsulating colloid 2 coated on the LED chip, the encapsulating colloid 2 is loaded in the luminescent cup 1, the coating thickness is 0.3 mm, and the encapsulating colloid 2 is uniformly doped with inorganic phosphor powder 3 (inorganic green phosphor + inorganic red phosphor + inorganic yellow phosphor).

The emission wavelength of the blue LED chip is 460nm.

The inorganic red phosphor is silicate red phosphor Li ₂ Mg _0.07 Eu _0.03 SiO ₄ (for its preparation method, refer to Chinese patent application 201710291161.4); its emission wavelength is 613nm.

The inorganic yellow fluorescent powder is La _3.9 Ca(SiO ₄ ) ₃ O:0.1Ce ³⁺ (for its preparation method, refer to Chinese patent application 201110060588.6); its emission wavelength is 560nm.

The inorganic green fluorescent powder is Li ₂ Ca _1.995 Si ₂ O ₇ :Eu _0.005 , @Ag _0.00025 (@ means coating, its preparation method can be found in Chinese patent application 201310090136.1); its emission wavelength is 540nm.

The preparation method of the LED light-emitting device described in this comparative example is: liquid KMT-2091 epoxy resin, inorganic green phosphor, inorganic red phosphor, and inorganic yellow phosphor in a mass ratio of 1:0.15:0.15: 0.15 After mixing evenly, heat and solidify to obtain. The heating temperature is 160°C and the heating time is 1h.

The LED-based light source body described in the comparative example can be used for lighting, and together with the driving IC to form a lighting device, compared with Examples 1-3, its wavelength continuity is poorer, and its color temperature is 3065K.

The above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention. These variations and improvements are also regarded as the protection scope of the present invention.

Claims (9)

1. a kind of LED-based light source body, including pcb board and multiple LEDs for being arranged on pcb board, its feature exist In：

Each described LED includes LED chip and the photoluminescent layers being disposed there above, wherein,

The photoluminescent layers include at least one organic green light embedded photoluminescent material, at least one inorganic yellow fluorescent powder and extremely A kind of few inorganic red light fluorescent powder.

2. LED-based light source body according to claim 1, it is characterised in that：The LED chip is blue-ray LED core Piece.

3. LED-based light source body according to claim 2, it is characterised in that：The transmitted wave of the blue-light LED chip A length of 460-470nm.

4. LED-based light source body according to claim 1, it is characterised in that：

The launch wavelength of the organic green light embedded photoluminescent material is 500-540nm；

The launch wavelength of the inorganic yellow fluorescent powder is 545-595nm；

The launch wavelength of the inorganic red light fluorescent powder is 611-650nm.

5. light source body according to claim 1, it is characterised in that：The principle of luminosity of the photoluminescent layers is fluorescence radiation And/or phosphorescence lights.

6. according to any described LED-based light source body in claim 1-5, it is characterised in that：The organic green light is photic Luminescent material is selected from organic light emission small molecule, light emitting polymer or organic light emission complex.

7. LED-based light source body according to claim 1, it is characterised in that：The photoluminescent layers are to be coated in institute State the packing colloid above LED chip, it is the Uniform Doped organic green light embedded photoluminescent material in the packing colloid, described Inorganic yellow fluorescent powder and the inorganic red light fluorescent powder.

8. LED-based light source body according to claim 1, it is characterised in that：The composition of the photoluminescent layers includes： Packing colloid, organic green light embedded photoluminescent material (E) -4- ((cyano group benzylidene) amino) benzoic acid, inorganic yellow fluorescent powder La_3.98Ca(SiO₄)₃O：0.02Ce³⁺, inorganic red light fluorescent powder Li₂Mg_0.07Eu_0.03SiO₄；Wherein, packing colloid, organic green light Embedded photoluminescent material, inorganic yellow fluorescent powder, the mass ratio of inorganic red light fluorescent powder are 1：(0.0001~0.0005)：(0.15 ~0.40)：(0.15~0.40).

9. a kind of lighting apparatus, including LED-based light source body and driving IC any one of claim 1-8.