Bionic solar spectrum LED and manufacturing method therefor

Abstract

The present invention relates to the technical field of LEDs, and in particular to a bionic solar spectrum LED and a manufacturing method therefor. In the bionic solar spectrum LED, LED chips comprise a first LED chip having a wavelength of 440-445 nm, a second LED chip having a wavelength of 450-455 nm, a third LED chip having a wavelength of 465-470 nm, a fourth LED chip having a wavelength of 410-415 nm, and a fifth LED chip having a wavelength of 380-385 nm; the LED chips are coated with a fluorescent glue, and the fluorescent glue is a mixture formed by compounding blue phosphor having an emission wavelength of 490-505 nm, green phosphor having an emission wavelength of 530-540 nm, red phosphor having an emission wavelength of 625-635 nm, red phosphor having an emission wavelength of 650-660 nm, infrared phosphor having an emission wavelength of 705-715 nm, infrared phosphor having an emission wavelength of 745-755 nm, infrared phosphor having an emission wavelength of 765-775 nm, infrared phosphor having an emission wavelength of 810-830 nm, infrared phosphor having an emission wavelength of 910-930 nm, and infrared phosphor having an emission wavelength of 1010-1030 nm with silica gel. The present invention achieves a spectrum satisfying a high color rendering index and a high spectral similarity index (SSI) and having parameters of the S / P ratio and the M / P ratio identical to those of sunlight, and can be well applied in bionic solar spectroscopy, medical testing instruments, and the fields of blood and urine testing.

Description

Bionic solar spectrum LED and preparation method thereof Technical Field

[0001] The present invention relates to the technical field of LEDs, and in particular to a bionic solar spectrum LED and a preparation method thereof. Background Art

[0002] Before the advent of artificial light, sunlight was the only source of light. Our ancestors worked from sunrise to sunset, relying on the sun for their livelihoods. Sunlight not only provides illumination and energy for the Earth but also regulates human circadian rhythms, influencing biology, psychology, and the human body. The life processes and evolution of life on Earth have long been dependent on sunlight. However, modern urbanites, especially office workers, spend much of their time indoors, rarely exposed to sunlight and unable to reap its benefits.

[0003] With the development of LED lighting technology and market, LED light source technology that simulates sunlight has been studied by various institutions and enterprises. There are usually three related technical solutions. The first is that LED chips (such as purple and blue light) excite multi-color phosphors. This has the advantages of relatively stable output spectrum, high color rendering index, no need for separate driver power design, and controllable scale production costs. The market prospects for high quality in general lighting are optimistic. The second is the combination of multiple LED devices with different wavelengths. The peak wavelength of the LED device can achieve full coverage from ultraviolet to infrared. By regulating the light output of LED devices in different bands, a spectrum with various forms can be obtained. Due to the relatively narrow peak half-width of LED devices, a large number of devices are required to simulate continuous sunlight. At the same time, it faces the high cost of driver power supply regulation, the calibration of white light output for lighting, and the inconsistent light decay of different LED devices. This technical solution is not yet mature for general lighting. The third is a hybrid solution of the above two methods.

[0004] Therefore, there is an urgent need for a solar-like LED lighting that overcomes the above shortcomings. Summary of the Invention

[0005] The object of the present invention is to provide a bionic solar spectrum LED.

[0006] Another object of the present invention is to provide a method for preparing a bionic solar spectrum LED.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] A bionic solar spectrum LED comprises an LED chip, a bracket and pins; the LED chip comprises a first LED chip with a wavelength of 440-445nm, a second LED chip with a wavelength of 450-455nm, a third LED chip with a wavelength of 465-470nm, a fourth LED chip with a wavelength of 410-415nm and a fifth LED chip with a wavelength of 380-385nm; the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip are all arranged in the bracket, and the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip are all arranged in the bracket. The chip is connected in series with the positive and negative electrodes of the bracket through pins; the LED chip is coated with fluorescent glue, which is a mixture of blue powder with an emission wavelength of 490-505nm, green powder with an emission wavelength of 530-540nm, red powder with an emission wavelength of 625-635nm, red powder with an emission wavelength of 650-660nm, infrared powder with an emission wavelength of 705-715nm, infrared powder with an emission wavelength of 745-755nm, infrared powder with an emission wavelength of 765-775nm, infrared powder with an emission wavelength of 810-830nm, infrared powder with an emission wavelength of 910-930nm, infrared powder with an emission wavelength of 1010-1030nm and silica gel.

[0009] Specifically, the blue powder with an emission wavelength of 490-505 nm is Lu3Al5O 12 :Ce 3+ Ingredients; the green powder having an emission wavelength of 530-540nm is Lu3Al5O 12 :Ce 3+ Ingredients: The red powder with an emission wavelength of 625-635nm and the red powder with an emission wavelength of 650-660nm are CaAlSiN3:Eu components; the infrared powder with an emission wavelength of 705-715nm, the infrared powder with an emission wavelength of 745-755nm, the infrared powder with an emission wavelength of 765-775nm, the infrared powder with an emission wavelength of 810-830nm, the infrared powder with an emission wavelength of 910-930nm, and the infrared powder with an emission wavelength of 1010-1030nm are Ga4GeO8:Cr 3+ .

[0010] Specifically, the silica gel: blue powder: green powder: 625-635nm red powder: 650-660nm red powder: 705-715nm infrared powder: 745-755nm infrared powder: 765-775nm infrared powder: 810-830nm infrared powder: 910-930nm infrared powder: 1010-1030nm infrared powder = 3: (0.4-0.6): (1.5-1.7): (0.05-0.06): (0.25-0.35): (0.5-0.7): (0.5-0.7): (0.5-0.7): (0.7-0.9): (0.7-0.9): (0.8-1.0).

[0011] Specifically, the bracket is further provided with a heat sink structure, and the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip are all arranged on the heat sink structure.

[0012] Specifically, the pins are arranged diagonally.

[0013] Specifically, the peak spectral energy ratio of the bare crystals synthesized by the chips used for the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip is: Фe (440-445nm): Фe (450-455nm): Фe (465-470nm): Фe (410-415nm): Фe (380-385nm) = (0.8-1.0): (0.8-1.0): (0.5-0.7): (0.15-0.25): (0.15-0.25).

[0014] Specifically, the spectral energy proportion of the finished product of bionic solar spectrum LED package is: Фe (350-399nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-1000nm) = (0.5%-1.0%): (3.8%-4.2%): (10%-12%): (20%-22%): (61%-63%).

[0015] Specifically, the relative spectral heights of the bionic solar spectrum LED packaged finished products are as follows: 350-460nm: ≤0.2, 700-850nm≥0.6, 850-1000nm≥0.25, and the peak wavelength is 770-790nm.

[0016] Specifically, the chromaticity width capacity of the bionic solar spectrum LED packaged into a white light LED is controlled within the third-order MacAdam ellipse, the spectral similarity SSI (350-830nm) coefficient of the 2700K solar spectrum is >95%, and the spectral similarity SSI (430-690nm) coefficient of the 2700K solar spectrum is >97%.

[0017] Specifically, after the bionic solar spectrum LED is packaged into a mixed color white light LED, the color quality requirements are controlled: Ra>95, R1-R15>90, TM-30-18, Rg>100, Rf>95, S / P ratio>1.34, M / P ratio>0.5, which is greater than sunlight with the same color temperature.

[0018] The preparation method of the bionic solar spectrum LED comprises the following preparation steps:

[0019] S100: Place the LED chip in the bowl of the bracket. Use a die bonder to bond the LED chip to the bracket using insulating glue or silver glue. After bonding, bake in an oven at 150-160°C for 2h±10min to completely fix the LED chip on the bracket.

[0020] S200: After the die bonding process, the positive and negative electrodes of the bracket are connected using wire bonding technology using a gold wire bonding machine. The LED chips in the bracket's bowl are connected in series.

[0021] S300: Prepare 2700K fluorescent glue solution. The fluorescent glue solution is silica gel: blue powder: green powder: 625-635nm red powder: 650-660nm red powder: 705-715nm infrared powder: 745-755nm infrared powder: 765-755nm infrared powder: 810-830nm infrared powder: 910-930nm infrared powder: 1010-1030nm infrared powder. Prepare the mixture in proportion so that the light color meets the requirements of color parameter 273;

[0022] S400: Pour the 2700K fluorescent glue solution prepared in S300 into the glue barrel of the glue dispensing machine. After the glue and bubbles are removed, dispense the 2700K fluorescent glue solution into the bowl of the bracket according to the color parameter requirements. After dispensing, bake it at 80℃ for 0.5h±5min, and then bake it at 160℃ for 4h±10min.

[0023] S500: After the bionic solar spectrum LED product has been glued and baked, it is threshed and then spectroscopically tested according to the given color parameters using a spectrophotometer.

[0024] Compared with the prior art, the bionic solar spectrum LED of the present invention has the following beneficial effects:

[0025] 1. The bionic solar spectrum LED of the present invention has the same spectrum as sunlight of the same color temperature in terms of S / P ratio and M / P ratio parameters of its packaged product, providing a comfortable, clear, and soft visual experience.

[0026] 2. The bionic solar spectrum LED of the present invention has an SSI (350-830nm) of >95% and an SSI (430-690nm) of >97% for its packaged finished product. It has excellent spectral similarity parameters, restores the color of natural light, and allows people to experience nature and enjoy the sun.

[0027] 3. The bionic solar spectrum LED of the present invention has a spectral component above 600nm accounting for more than 60% of the packaged finished product, with excellent phototherapy effect and healing wavelength.

[0028] 4. The bionic solar spectrum LED of the present invention meets the requirements of high color rendering, high SSI spectrum similarity, and the S / P ratio and M / P ratio parameters are the same as those of sunlight. It is well applied in the fields of bionic solar spectroscopy, simulation identification and healthy lighting.

[0029] 5. The bionic solar spectrum LED of the present invention can also be applied to medical testing instruments, blood and urine testing, and has novel and wide applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of the front structure of the bionic solar spectrum LED of the present invention.

[0031] FIG2 is a schematic diagram of the back structure of the bionic solar spectrum LED of the present invention.

[0032] FIG3 is a cross-sectional view of the bionic solar spectrum LED of the present invention.

[0033] FIG4 is a graph showing the bare crystal luminescence spectrum of the bionic solar spectrum LED of the present invention.

[0034] FIG5 is a graph showing the luminous spectrum of the finished product of the bionic solar spectrum LED package of the present invention.

[0035] 6 and 7 are graphs showing the similarity calculation between the bionic solar spectrum LED and the 2700K SSI spectrum of the present invention.

[0036] FIG8 is a test report of the bionic solar spectrum LED of the present invention.

[0037] FIG9 is a bin diagram showing the chromaticity landing point requirements of the finished bionic solar spectrum LED package of the present invention.

[0038] Reference numerals: 10 - pin 11 - first LED chip 12 - second LED chip 13 - third LED chip 14 - fourth LED chip 15 - fifth LED chip 16 - bowl 17 - bracket 18 - fluorescent glue 19 - heat sink structure. DETAILED DESCRIPTION

[0039] The technical solutions of the present invention are further described in detail below with reference to Figures 1-9. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Although this specification describes the embodiments, not each embodiment contains only one independent technical solution. This description is provided for clarity only. Those skilled in the art should consider this specification as a whole. The embodiments can also be appropriately combined to form other embodiments that are understandable to those skilled in the art.

[0040] A bionic solar spectrum LED includes an LED chip, a bracket 17, and a pin 10; the LED chip includes a first LED chip 11 with a wavelength of 440-445nm, a second LED chip 12 with a wavelength of 450-455nm, a third LED chip 13 with a wavelength of 465-470nm, a fourth LED chip 14 with a wavelength of 410-415nm, and a fifth LED chip 15 with a wavelength of 380-385nm; the first LED chip 11, the second LED chip 12, the third LED chip 13, the fourth LED chip 14, and the fifth LED chip 15 are all arranged in the bracket 17, and the first LED chip 11, the second LED chip 12, the third LED chip 13, the fourth LED chip 14, and the fifth LED chip 15 are connected in series with the positive and negative poles of the bracket 17 via the pin 10. The LED chip is coated with fluorescent glue 18, which is a mixture of blue powder with an emission wavelength of 490-505nm, green powder with an emission wavelength of 530-540nm, red powder with an emission wavelength of 625-635nm, red powder with an emission wavelength of 650-660nm, infrared powder with an emission wavelength of 705-715nm, infrared powder with an emission wavelength of 745-755nm, infrared powder with an emission wavelength of 765-775nm, infrared powder with an emission wavelength of 810-830nm, infrared powder with an emission wavelength of 910-930nm, infrared powder with an emission wavelength of 1010-1030nm and silica gel.

[0041] The blue powder with an emission wavelength of 490-505 nm in this embodiment is Lu3Al5O 12 :Ce 3+Ingredients; the green powder having an emission wavelength of 530-540nm is Lu3Al5O 12 :Ce 3+ Ingredients: The red powder with an emission wavelength of 625-635nm and the red powder with an emission wavelength of 650-660nm are CaAlSiN3:Eu components; the infrared powder with an emission wavelength of 705-715nm, the infrared powder with an emission wavelength of 745-755nm, the infrared powder with an emission wavelength of 765-775nm, the infrared powder with an emission wavelength of 810-830nm, the infrared powder with an emission wavelength of 910-930nm, and the infrared powder with an emission wavelength of 1010-1030nm are Ga4GeO8:Cr 3+ .

[0042] The silica gel of the present embodiment: blue powder: green powder: red powder of 625-635nm: red powder of 650-660nm: infrared powder of 705-715nm: infrared powder of 745-755nm: infrared powder of 765-775nm: infrared powder of 810-830nm: infrared powder of 910-930nm: infrared powder of 1010-1030nm = 3: (0.4-0.6): (1.5-1.7): (0.05-0.06): (0.25-0.35): (0.5-0.7): (0.5-0.7): (0.5-0.7): (0.7-0.9): (0.7-0.9): (0.8-1.0). Specifically, silica gel: blue powder: green powder: 625-635nm red powder: 650-660nm red powder: 705-715nm infrared powder: 745-755nm infrared powder: 765-775nm infrared powder: 810-830nm infrared powder: 910-930nm infrared powder: 1010-1030nm infrared powder is 3:0.6:1.6:0.06:0.30:0.6:0.7:0.6:0.7:0.9:0.9, 3:0.4:1.5:0.05:0.25:0.5:0.5 :0.5:0.7:0.7:0.8,3:0.5:1.7:0.05:0.35:0.6:0.6:0.6:0.7:0.7:1.0,3:0.4:1.6:0.06:0.25:0.5:0.7:0.6:0.8:0.8:0.8,3:0.5:1.6:0.06:0.30:0.6:0.6:0.6:0.8:0.8:0.9,3:0.6:1.5:0.06:0.25:0.7:0.5:0.7:0.9:0.7:1.0 and so on. For example, silica gel: 500nm blue powder: 530nm green powder: 630 red powder: 650 red powder: 710nm infrared powder: 750nm infrared powder: 770nm infrared powder: 820nm infrared powder: 920nm infrared powder: 1024nm infrared powder is 3: 0.4: 1.5: 0.05: 0.25: 0.5: 0.5: 0.5: 0.7: 0.7: 0.8.

[0043] The bracket 17 of this embodiment is also provided with a heat sink structure 19, on which the first LED chip 11, the second LED chip 12, the third LED chip 13, the fourth LED chip 14, and the fifth LED chip 15 are all disposed. The bracket 17 employs a thermal and electrical separation design, which facilitates heat dissipation of the entire packaging structure, increases the power consumption of the LED package, and thus achieves cost savings.

[0044] The pins 10 of this embodiment are arranged diagonally, which greatly improves the placement of LED chips in the functional area, improves the intensive design of the product, and thus improves the brightness of the product.

[0045] In this embodiment, the copper thickness of the bracket 17 is 0.2-0.3 mm, the cup depth is 0.3-0.5 mm, and the total height is 0.5-0.8 mm. Preferably, the copper thickness of the bracket 17 is 0.25 mm, the cup depth is 0.4 mm, and the total height is 0.65 mm.

[0046] The peak spectral energy ratio of the bare crystals synthesized by the chips used for the first LED chip 11, the second LED chip 12, the third LED chip 13, the fourth LED chip 14 and the fifth LED chip 15 of this embodiment is: Фe (440-445nm): Фe (450-455nm): Фe (465-470nm): Фe (410-415nm): Фe (380-385nm) = (0.8-1.0): (0.8-1.0): (0.5-0.7): (0.15-0.25): (0.15-0.25).

[0047] The bionic solar spectrum LED of this embodiment has a spectral energy ratio of the packaged finished product: Фe (350-399nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-1000nm) = (0.5%-1.0%): (3.8%-4.2%): (10%-12%): (20%-22%): (61%-63%).

[0048] The luminous spectrum distribution of the bionic solar spectrum LED package product of the present invention is shown in Table 1.

[0049] Table 1. The luminescence spectrum of the finished product of the bionic solar spectrum LED package and the spectrum distribution of sunlight.

[0050] The bionic solar spectrum LED of this embodiment has the following relative spectrum heights in its packaged finished product: 350-460nm: ≤0.2, 700-850nm≥0.6, 850-1000nm≥0.25, and the peak wavelength is 770-790nm.

[0051] The bionic solar spectrum LED of this embodiment is packaged into a white light LED and its chromaticity width capacity is controlled within the third-order MacAdam ellipse. The spectral similarity SSI (350-830nm) coefficient of the 2700K sunlight spectrum is greater than 95%, and the spectral similarity SSI (430-690nm) coefficient of the 2700K sunlight spectrum is greater than 97%.

[0052] Table 2 Comparison of the S / P ratio and M / P ratio of the bionic solar spectrum LED of the present invention and sunlight 4000K.

[0053] The bionic solar spectrum LED of the present invention has an SSI (350-830nm) of >95% and an SSI (430-690nm) of >97% for its packaged finished product, and has excellent spectral similarity parameters with 2700K sunlight, restoring the color of natural light, allowing people to experience nature and enjoy sunshine.

[0054] The bionic solar spectrum LED of this embodiment, when packaged into a mixed-color white LED, meets the following color quality requirements: Ra > 95, R1-R15 > 90, TM-30-18, Rg > 100, Rf > 95, S / P ratio > 1.34, and M / Pratio > 0.5, which is greater than sunlight of the same color temperature. The S / Pratio and M / P ratio parameters of the packaged bionic solar spectrum LED of this invention both have the same spectrum as sunlight of the same color temperature, providing a comfortable, clear, and soft visual experience.

[0055] The preparation method of the bionic solar spectrum LED comprises the following preparation steps:

[0056] S100: Place the LED chip in the bowl 16 of the bracket 17. Use a die bonder to bond the LED chip to the bracket 17 using insulating glue or silver glue. After bonding, bake in an oven at 150-160°C for 2h±10min to completely fix the LED chip to the bracket 17.

[0057] S200: After the die bonding is completed, the positive and negative electrodes of the bracket 17 are connected by wire bonding technology using a gold wire bonding machine, and the LED chips in the bowl 16 of the bracket 17 are connected in series.

[0058] S300: Prepare 2700K fluorescent glue 18 solution. The fluorescent glue 18 solution is silica gel: blue powder: green powder: 625-635nm red powder: 650-660nm red powder: 705-715nm infrared powder: 745-755nm infrared powder: 765-755nm infrared powder: 810-830nm infrared powder: 910-930nm infrared powder: 1010-1030nm infrared powder. Prepare the mixture in proportion so that the light color meets the requirements of color parameter 273;

[0059] S400: Pour the 2700K fluorescent glue 18 solution prepared in S300 into the glue barrel of the glue dispensing machine. After the glue and bubbles are removed, dispense the 2700K fluorescent glue 18 solution into the bowl 16 of the bracket 17 according to the color parameter requirements. After dispensing, bake at 80℃ for 0.5h±5min, and then bake at 160℃ for 4h±10min.

[0060] S500: After the bionic solar spectrum LED product has been glued and baked, it is threshed and then spectroscopically tested according to the given color parameters using a spectrophotometer.

[0061] The spectral parameters of the bionic solar spectrum LED of the present invention are shown in Table 3.

[0062] Table 3 Spectral parameters of the finished product of the bionic solar spectrum LED package of the present invention.

[0063] The bionic solar spectrum LED of the present invention meets the requirements of high color rendering, high SSI spectrum similarity, and the S / P ratio and M / P ratio parameters are the same as those of sunlight. It is well applied in the fields of bionic solar spectroscopy, simulation identification and healthy lighting.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The bionic solar spectrum LED includes an LED chip, a bracket and pins; it is characterized in that: The LED chips include a first LED chip with a wavelength of 440 - 445 nm, a second LED chip with a wavelength of 450 - 455 nm, a third LED chip with a wavelength of 465 - 470 nm, a fourth LED chip with a wavelength of 410 - 415 nm, and a fifth LED chip with a wavelength of 380 - 385 nm; the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, and the fifth LED chip are all disposed within a bracket, and the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, and the fifth LED chip are connected in series with the positive and negative electrodes of the bracket through pins; a fluorescent glue is coated on the LED chips, and the fluorescent glue is a mixture of blue powder with an emission wavelength of 490 - 505 nm, green powder with an emission wavelength of 530 - 540 nm, red powder with an emission wavelength of 625 - 635 nm, red powder with an emission wavelength of 650 - 660 nm, infrared powder with an emission wavelength of 705 - 715 nm, infrared powder with an emission wavelength of 745 - 755 nm, infrared powder with an emission wavelength of 765 - 775 nm, infrared powder with an emission wavelength of 810 - 830 nm, infrared powder with an emission wavelength of 910 - 930 nm, infrared powder with an emission wavelength of 1010 - 1030 nm, and silica gel; The blue phosphor with an emission wavelength of 490 - 505 nm is Lu3Al5O 12 :Ce 3+ component; the green phosphor with an emission wavelength of 530 - 540 nm is Lu3Al5O 12 :Ce 3+ component; the red phosphor with an emission wavelength of 625 - 635 nm, the red phosphor with an emission wavelength of 650 - 660 nm is CaAlSiN3:Eu component; the infrared phosphors with emission wavelengths of 705 - 715 nm, 745 - 755 nm, 765 - 775 nm, 810 - 830 nm, 910 - 930 nm, 1010 - 1030 nm are Ga4GeO8:Cr 3+ ; The mass ratio of the silica gel: blue powder: green powder: red powder with a wavelength of 625 - 635 nm: red powder with a wavelength of 650 - 660 nm: infrared powder with a wavelength of 705 - 715 nm: infrared powder with a wavelength of 745 - 755 nm: infrared powder with a wavelength of 765 - 755 nm infrared powder: infrared powder with a wavelength of 810 - 830 nm: infrared powder with a wavelength of 910 - 930 nm: infrared powder with a wavelength of 1010 - 1030 nm = 3:(0.4 - 0.6):(1.5 - 1.7):(0.05 - 0.06):(0.25 - 0.35):(0.5 - 0.7):(0.5 - 0.7):(0.5 - 0.7):(0.7 - 0.9):(0.7 - 0.9):(0.8 - 1.0).

2. The bionic solar spectrum LED according to claim 1, wherein: The bracket is further provided with a heat sink structure, and the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, and the fifth LED chip are all disposed on the heat sink structure.

3. The bionic solar spectrum LED according to claim 1, wherein: The pins are arranged in a diagonal manner.

4. The bionic solar spectrum LED according to claim 1, characterized in that: The peak spectral energy ratio of the bare chips synthesized by the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, and the fifth LED chip is: Фe(440 - 445 nm): Фe(450 - 455 nm): Фe(465 - 470 nm): Фe(410 - 415 nm): Фe(380 - 385 nm) = (0.8 - 1.0):(0.8 - 1.0):(0.5 - 0.7):(0.15 - 0.25):(0.15 - 0.25).

5. The bionic solar spectrum LED according to claim 1, wherein: The spectral energy ratio of its packaged finished product is: Фe(350 - 399nm): Фe(400 - 499nm): Фe(500 - 599nm): Фe(600 - 699nm): Фe(700 - 1000nm) = (0.5% - 1.0%):(3.8% - 4.2%): (10％-12％):(20％-22％):(61％-63％)。 6. The bionic solar spectrum LED according to claim 1, wherein: The relative spectral height of its packaged finished product is as follows: 350 - 460nm: ≤0.2, 700 - 850nm ≥0.6, 850 - 1000nm ≥0.25, and the peak wavelength is at 770 - 790nm; the chromaticity tolerance of its packaged white LED is controlled within the third-order MacAdam ellipse, and the spectral similarity SSI(350 - 830nm) coefficient of the 2700K sunlight spectrum > 95%, and the spectral similarity SSI(430 - 690nm) coefficient of the 2700K sunlight spectrum > 97%.

7. The bionic solar spectrum LED according to claim 1, wherein: The color quality requirements for its packaged mixed-color white LED are controlled to meet Ra > 95, R1 - R15 > 90, TM-30-18, Rg > 100, Rf > 95, S / P ratio > 1.34, M / P ratio > 0.5, and both the S / P ratio and the M / P ratio are greater than those of sunlight at the same color temperature.

8. A method for preparing the bionic solar spectrum LED according to any one of claims 1-7, characterized in that: It includes the following preparation steps: S100: Place the LED chip in the cup of the bracket. The LED chip is fixed on the bracket by die bonding with insulating glue or silver glue using a die bonder. After die bonding, bake it in an oven at 150 - 160°C for 2h ± 10min to completely fix the LED chip on the bracket; S200: After die bonding and baking, use a gold wire bonder to connect the positive and negative electrodes of the bracket by wire bonding technology, and the LED chips in the cup of the bracket are connected in series; S300: Prepare a 2700K fluorescent glue solution. The fluorescent glue solution is a mixture prepared by mixing silica gel: blue powder: green powder: red powder at 625 - 635nm: red powder at 650 - 660nm: infrared powder at 705 - 715nm: infrared powder at 745 - 755nm: infrared powder at 765 - 775nm: infrared powder at 810 - 830nm: infrared powder at 910 - 930nm: infrared powder at 1010 - 1030nm in proportion to make the light color meet the color parameter 273 requirements; S400: Pour the 2700K fluorescent glue solution prepared in S300 into the glue bucket of the dispenser. After discharging and degassing, dispense the 2700K fluorescent glue solution into the cup of the bracket according to the color parameter requirements. After dispensing, bake it at 80°C for 0.5h ± 5min first, and then bake it at 160°C for 4h ± 10min; S500: After deboning the bionic solar spectrum LED product after dispensing and baking, perform spectral separation according to the given color parameter requirements using a spectral tester.

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