Panoramic light COB structure LED light source

Abstract

The utility model belongs to LED technical field especially relates to a panoramic light COB structure LED light source, including LED wafer, support, TiO2 white glue dam layer and fluorescent encapsulation gum, the white light color temperature that the utility model adjusts obtains from 1800K 20000K, R9>80, R13>93, Ra>85, the white light color temperature that the utility model adjusts obtains from 1800K 3100K, R9>90, Ra>93, spectral similarity SSI>90, the white light color temperature that the utility model adjusts obtains from 2500K 5800K, R9>80, Ra>95, spectral similarity SSI>80, the white light color temperature that the utility model adjusts obtains from 2500K 10000K, R9>80, Ra>95, in this color gamut S / P ratio (dark bright ratio) is close to the sunlight of same color temperature, in this color gamut M / P ratio is close to the sunlight of same color temperature, close to nature, rhythm is healthy.

Description

Technical Field

[0001] This utility model belongs to the field of LED technology, and in particular relates to a panoramic light COB structure LED light source. Background Technology

[0002] In the field of high-end panoramic lighting, as users continue to raise their requirements for light environment quality, scene adaptability and visual experience, existing LED light sources are gradually revealing technical bottlenecks, making it difficult to meet the core requirements of high-end scenarios for "high color rendering, wide color gamut, wide color temperature adjustment and conformity to blackbody trajectory".

[0003] Currently, most mainstream panoramic LED light sources adopt a combination of monochromatic R, G, and B chips or a combination of monochromatic chips and single-color-temperature white light chips. On the one hand, traditional monochromatic R, G, and B chips have a narrow emission spectrum and limited color gamut coverage, and the emitted color is rather harsh, easily resulting in abrupt color transitions. This leads to a lack of softness and sophistication in the lighting environment, making it unsuitable for scenarios with high requirements for lighting atmosphere and quality, such as home and high-end commercial spaces. On the other hand, the color temperature adjustment range of existing light sources is relatively narrow, mostly covering only the conventional range of 2700K-6500K, which is insufficient to meet the needs of special scenarios for extremely low (such as 1800K warm yellow light) or extremely high (such as 20000K cool white light) color temperatures.

[0004] Meanwhile, even though some light sources claim to achieve wide color temperature adjustment, they still struggle to accurately match the blackbody radiation trajectory within the critical commonly used color temperature range of 2500K-10000K. This results in light colors at different color temperatures deviating from the characteristics of natural light, leading to decreased visual comfort. Furthermore, the color rendering performance of existing light sources is generally insufficient. Most products have a color rendering index (Ra) of only 90-95, and the special color index (R9) is often below 70, failing to accurately reproduce the true colors of objects. This is particularly problematic in scenarios with stringent requirements for color accuracy, such as art exhibitions, high-end cosmetics, and boutique displays.

[0005] Therefore, developing a panoramic LED light source that can achieve full RGB color gamut coverage, smooth color transitions, wide color temperature precise adjustment, and high color rendering performance has become a key direction for solving the pain points of current high-end panoramic lighting technology. Utility Model Content

[0006] The purpose of this invention is to provide a panoramic light COB structure LED light source, which aims to solve the problem that existing LED light sources cannot meet the requirements of achieving full RGB color gamut coverage, smooth color transition, wide color temperature precise adjustment, and high color rendering performance.

[0007] To achieve the above objectives, this utility model provides a panoramic COB structure LED light source, including an LED chip, a bracket, a TiO2 white glue damming layer, and a fluorescent encapsulating adhesive. The bracket is divided into a functional area and a non-functional area. Positive and negative electrodes are disposed in the non-functional area. The functional area is circularly divided into four equal parts, designated as a first functional area, a second functional area, a third functional area, and a fourth functional area, or it is an outer ring surrounding a central portion divided into three equal parts, designated as a first functional area, a second functional area, a third functional area, and a fourth functional area. The first functional area... LED chips are disposed in the first, second, third, and fourth functional areas, and each LED chip is connected to the positive and negative electrodes by gold wire bonding; the TiO2 white glue dam layer is formed by dispensing and separates the first, second, third, and fourth functional areas; the fluorescent encapsulating adhesive includes white 5000K fluorescent adhesive dispensed in the first functional area, pink fluorescent adhesive dispensed in the second functional area, pink-green fluorescent adhesive dispensed in the third functional area, and pink-blue fluorescent adhesive dispensed in the fourth functional area.

[0008] The panoramic light COB structure LED light source provided in this embodiment of the utility model has at least one of the following technical effects:

[0009] 1. The white light color temperature obtained by the panoramic light COB structure LED light source of this utility model is from 1800K to 20000K, R9>80, R13>93, Ra>85;

[0010] 2. The white light obtained by the panoramic COB structure LED light source of this utility model has a color temperature of 1800K-3100K, R9>90, Ra>93, and spectral similarity SSI>90. Within this color gamut, the S / P ratio (brightness-darkness ratio) is close to that of sunlight of the same color temperature, and the M / P ratio (non-brightness-darkness ratio) is also close to that of sunlight of the same color temperature, which is close to nature and rhythmic and healthy.

[0011] 3. The white light obtained by the panoramic COB structure LED light source of this utility model has a color temperature of 2500K-5800K, R9>80, Ra>95, and spectral similarity SSI>80. Within this color gamut, the S / P ratio (brightness-darkness ratio) is close to that of sunlight of the same color temperature, and the M / P ratio (non-brightness-darkness ratio) is also close to that of sunlight of the same color temperature, which is close to nature and rhythmic and healthy.

[0012] 4. The white light color temperature obtained by the panoramic COB structure LED light source of this utility model ranges from 2500K to 10000K, with R9>80 and Ra>95. Within this color gamut, the S / P ratio (brightness-darkness ratio) is close to that of sunlight of the same color temperature, and the M / Pratio (non-brightness ratio) is also close to that of sunlight of the same color temperature, making it close to nature, rhythmic, and healthy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A side view of the bracket for the panoramic light COB structure LED light source provided in an embodiment of this utility model.

[0015] Figure 2 This is a top view of the bracket for a panoramic light COB structure LED light source provided in one embodiment of the present invention.

[0016] Figure 3 A top view of the bracket for a panoramic light COB structure LED light source provided in another embodiment of this utility model.

[0017] Figure 4 The first functional area chromaticity BIN diagram of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0018] Figure 5 The second functional area chromaticity BIN diagram of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0019] Figure 6 The third functional area chromaticity BIN diagram of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0020] Figure 7 The fourth functional area chromaticity BIN diagram of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0021] Figure 8 The color gamut diagram of the panoramic light COB structure LED light source provided in the embodiment of this utility model.

[0022] Figure 9 A diagram showing the adjustable color gamut area ratio of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0023] Figure 10 A diagram of the white light region of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0024] Figure 11 The 5000K spectrum of the first functional area of ​​the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0025] Figure 12 The second functional zone pink spectrum of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0026] Figure 13 The third functional zone pink-green spectrum of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0027] Figure 14 The fourth functional zone of the panoramic light COB structure LED light source provided in this embodiment of the utility model is a pink-blue spectral diagram.

[0028] Figure 15 White light spectrum of the panoramic light COB structure LED light source provided in this embodiment of the utility model.

[0029] The following are the labeling elements in the figure:

[0030] 1-Substrate thermal conductive layer 2-Solder resist layer 3-Circuit layer

[0031] 4-Functional area layer; 5-Insulating layer; 6-Positive electrode

[0032] 7-White light negative electrode; 8-Pink-tipped blue light negative electrode; 9-Pink-tipped green light negative electrode

[0033] 10-Adjusting pink light negative electrode 11-First functional area 12-Second functional area

[0034] 13-Third Functional Area 14-Fourth Functional Area 15-Positive and Negative Poles of Functional Areas

[0035] 16 - Non-functional area of ​​the stent; 17 - Functional area of ​​the stent. Detailed Implementation

[0036] The following is a reference appendix. Figures 1-15 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0037] In one embodiment of this utility model, a panoramic light COB structure LED light source is provided, including an LED chip, a bracket, a TiO2 white glue damming layer, and a fluorescent encapsulating glue.

[0038] like Figure 2-3As shown, the support is divided into a functional area 17 and a non-functional area 16, with positive and negative electrodes provided in the non-functional area 16. (See...) Figure 2 In one embodiment of the bracket, the functional areas 17 of the bracket are evenly divided into four circular sections, namely, a first functional area 11, a second functional area 12, a third functional area 13, and a fourth functional area 14. See [link to documentation]. Figure 3 In another embodiment of the bracket, the functional area 17 of the bracket is divided into three equal parts in a circular outer ring, namely the first functional area 11, the second functional area 12, the third functional area 13, and the fourth functional area 14. In this embodiment, the LED chips in each zone are precisely arranged, and there is a good reference point for the white glue dam, ensuring the standardization of product size specifications.

[0039] LED chips are disposed in the first functional area 11, the second functional area 12, the third functional area 13, and the fourth functional area 14, and each LED chip is connected to the positive and negative electrodes by gold wire bonding. The positive and negative electrodes include, for example,... Figure 2-3 As shown, the positive electrode 6, white light negative electrode 7, pink blue light negative electrode 8, pink green light negative electrode 9, and pink red light negative electrode 10 are located in the non-functional area 16 of the support.

[0040] See Figure 2-3 The TiO2 white glue dam layer is formed by dispensing and separates the first functional area 11, the second functional area 12, the third functional area 13 and the fourth functional area 14.

[0041] Furthermore, the fluorescent encapsulating adhesive includes a white 5000K fluorescent adhesive dispensing in the first functional area 11, a pink fluorescent adhesive dispensing in the second functional area 12, a pink-green fluorescent adhesive dispensing in the third functional area 13, and a pink-blue fluorescent adhesive dispensing in the fourth functional area 14.

[0042] In one embodiment of this utility model, such as Figure 2-3 As shown, the area ratio of the first functional area 11: the area of ​​the second functional area 12: the area of ​​the third functional area 13: the area of ​​the fourth functional area 14 is (1-2):1:1:1. That is, the area ratio of the first functional area 11: the area of ​​the second functional area 12: the area of ​​the third functional area 13: the area of ​​the fourth functional area 14 is 1:1:1:1 or 2:1:1:1.

[0043] In one embodiment of this utility model, such as Figure 2-3As shown, the ratio of the area of ​​the functional area 17 of the support to the area of ​​the support is in the range of (0.3-0.7):1. That is, the ratio of the area of ​​the functional area 17 of the support to the area of ​​the support is 0.3:1, 0.4:1, 0.5:1, 0.7:1 or 0.7:1.

[0044] In one embodiment of the present invention, the LED chip in the first functional area 11 includes a violet LED chip with a peak wavelength of 400-415nm, a blue LED chip with a peak wavelength of 435-445nm, a blue LED chip with a main wavelength of 450-460nm, and a blue LED chip with a main wavelength of 460-470nm. The ratio of the number of violet LED chips with a peak wavelength of 400-415nm, blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm is (1-2):(1-2):(1-2):(1-2).

[0045] Furthermore, the LED chip in the second functional area 12 includes a blue LED chip with a main wavelength of 440-470nm.

[0046] Furthermore, the LED chip in the third functional area 13 includes a blue LED chip with a main wavelength of 440-470nm.

[0047] Furthermore, the LED chips in the fourth functional area 14 include blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm. The ratio of the number of blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm is (1-2):(1-2):(1-2), specifically 1:1:1, 2:2:2, 2:2:1, or 2:1:2, etc.

[0048] In one embodiment of this utility model, the blue-green phosphor with an emission wavelength of 490-500nm is...

[0049] Lu3Al5O 12 Ce 3+ The composition has a half-width of 80-90 nm; specifically, the half-width can be 80 nm, 85 nm, or 90 nm.

[0050] Furthermore, the green powder with an emission wavelength of 535-545nm is Lu3Al5O. 12 Ce 3+The composition has a half-width of 95-105nm; specifically, the half-width can be 95nm, 100nm, or 105nm.

[0051] Furthermore, the red powder with an emission wavelength of 650-660nm is of CaAlSiN3:Eu composition and has a half-width of 95-105nm; specifically, the half-width can be 95nm, 100nm, or 105nm.

[0052] Furthermore, the yellow powder with an emission wavelength of 540-560nm is Y3Al5O 12 :Ce 3+ The composition has a half-width of 70-90nm; specifically, the half-width can be 70nm, 80nm, or 90nm.

[0053] In the panoramic light COB structure LED light source provided in this embodiment of the utility model, see Figure 4 As can be seen, the BIN table for colorimetric division of the first functional area 11 is as follows:

[0054]

[0055] See Figure 5 As can be seen, the BIN table for the second functional area (12 chromaticity divisions) is as follows:

[0056]

[0057] See Figure 6 As can be seen, the BIN table for the third functional area 13 chromaticity division is as follows:

[0058]

[0059] See Figure 7 As can be seen, the BIN table for the fourth functional area, 14 chromaticity divisions, is as follows:

[0060]

[0061] See further Figure 8-9 It can be seen that the panoramic light COB structure LED light source of this utility model embodiment has an sRGB color gamut area ratio of 44.6% and a wide adjustable color gamut.

[0062] Combination Figure 15 Tables 1 and 2 below show the photoelectric parameters of white light in the 1800K-20000K range using four-color (R, G, B, W) settings:

[0063]

[0064]

[0065]

[0066] Table 1

[0067]

[0068]

[0069] Table 2

[0070] Combining the white light areas in Table 1-2 above and Figure 10 It can be seen that the panoramic light COB structure LED light source provided in this embodiment of the present invention has at least the following technical effects:

[0071] 1. The white light color temperature obtained by the panoramic light COB structure LED light source of this utility model is from 1800K to 20000K, R9>80, R13>93, Ra>85;

[0072] 2. The white light obtained by the panoramic COB structure LED light source of this utility model has a color temperature of 1800K-3100K, R9>90, Ra>93, and spectral similarity SSI>90. Within this color gamut, the S / P ratio (brightness-darkness ratio) is close to that of sunlight of the same color temperature, and the M / P ratio (non-brightness-darkness ratio) is also close to that of sunlight of the same color temperature, which is close to nature and rhythmic and healthy.

[0073] 3. The white light obtained by the panoramic COB structure LED light source of this utility model has a color temperature of 2500K-5800K, R9>80, Ra>95, and spectral similarity SSI>80. Within this color gamut, the S / P ratio (brightness-darkness ratio) is close to that of sunlight of the same color temperature, and the M / P ratio (non-brightness-darkness ratio) is also close to that of sunlight of the same color temperature, which is close to nature and rhythmic and healthy.

[0074] 4. The white light color temperature obtained by the panoramic COB structure LED light source of this utility model ranges from 2500K to 10000K, with R9>80 and Ra>95. Within this color gamut, the S / P ratio (brightness-darkness ratio) is close to that of sunlight of the same color temperature, and the M / Pratio (non-brightness ratio) is also close to that of sunlight of the same color temperature, making it close to nature, rhythmic, and healthy.

[0075] Furthermore, in the bracket functional area 17 of the panoramic light COB structure LED light source of this embodiment, the light color test parameters of the first functional area 115000K are as follows:

[0076]

[0077]

[0078] The above test report shows that the light color of Functional Zone 11 meets the following requirements: Ra>97, R1-R15>90, Television Illumination Index (TLCI-2012)>99, Color Quality Index (CQS)>98, TM-30Rg>97, Rf>95, Rf,skin>95, and the gamut area index (GAI-BB) relative to sunlight of the same color temperature>95, and the gamut area index (GAI-BB) relative to equal-energy white light point>85, which meets the requirements of the CLASSA standard light source. The spectral similarity (SSI) (350-830nm)>90, half-width (WWHM)>250nm, is broad-spectrum, close to sunlight, natural, and promotes a healthy rhythm. The S / P ratio (brightness-to-darkness ratio) is close to sunlight of the same color temperature, and the M / P ratio (non-brightness-to-darkness ratio) within this color gamut is also close to sunlight of the same color temperature, promoting a natural, healthy rhythm.

[0079] Combined Figure 11 As can be seen from the spectrum, in the panoramic light COB structure LED light source of this embodiment:

[0080] The peak height of 1.390-420nm needs to be within the range of (0.4-0.8) to ensure that the spectral similarity SSI (350-830nm) > 90;

[0081] 2. The peak is between 445-470nm, and the spectral height of the 500-520nm G spectrum is >0.9;

[0082] 3. The utility model's 5000K spectrum meets the following requirements in the 480-550nm range (ensuring Ra and colorimetric parameter requirements):

[0083]

[0084] Where 0.9≤Km≤1.1, y(λ) is the relative spectral height corresponding to wavelength λ.

[0085] The light color test parameters for adjusting pink in the second functional area 12 are shown in the table below:

[0086]

[0087]

[0088] The test report above shows that the second functional area 12 light color meets the following requirements: Ra>85, S / P ratio (brightness ratio)<0.4, M / P ratio (non-brightness ratio)<0.1, which is suitable for rest. The peak wavelength is 640-650nm and the half-width is 90-100nm, which is conducive to improving the light color parameters such as the color rendering index.

[0089] Combined Figure 12As can be seen from the spectrum, in the panoramic light COB structure LED light source of this embodiment:

[0090] The proportion of spectral content with wavelengths below 1.500nm is <1%;

[0091] 2. The peak wavelength is between 640-650 nm;

[0092] 3. The pink spectrum adjusted by this invention meets the following requirements in the range of 480-650nm (ensuring the combined light Ra and chromaticity parameter requirements):

[0093]

[0094] Where 0.9≤Km≤1.1, y (λ) This represents the relative spectral height corresponding to wavelength λ.

[0095] The light color test parameters for the pinkish-yellow-green tint in the third functional area 13 are shown in the table below:

[0096]

[0097]

[0098] The test report above shows that the light color of the third functional area 13 meets the following requirements: Ra>55, peak wavelength is 540-550nm, half-width is 115-130nm, which is conducive to improving light color parameters such as the color rendering index.

[0099] Combined Figure 13 As can be seen from the spectrum, in the panoramic light COB structure LED light source of this embodiment:

[0100] Spectral peaks below 1.500 nm are <0.28;

[0101] 2. The peak wavelength is between 540-550 nm;

[0102] 3. The yellow-green light spectrum of this invention meets the following requirements in the range of 480-550nm (ensuring the combined light Ra and chromaticity parameter requirements);

[0103]

[0104] Where 0.9≤Km≤1.1, y (λ) This represents the relative spectral height corresponding to wavelength λ.

[0105] The light color test parameters for adjusting the pinkish blue in the fourth functional area 14 are shown in the table below:

[0106]

[0107]

[0108] The test report above shows that the fourth functional area 14 light color meets the following requirements: peak wavelength is 440-470nm, half-width is 45-55nm, which is conducive to improving light color parameters such as the color rendering index; S / P ratio (brightness ratio) > 5, M / Pratio (non-brightness ratio) > 2.6, which is conducive to regulating mood and improving the light spectrum and color parameters.

[0109] Combined Figure 14 As can be seen from the spectrum, in the panoramic light COB structure LED light source of this embodiment:

[0110] 1. The 400-600nm spectrum is continuous, which is beneficial for combining light to supplement the 450-500nm blue-green light spectrum and adjust spectral parameters;

[0111] 2. The peak is between 440-470nm.

[0112] In one embodiment of this utility model, such as Figure 1 As shown, the bracket is a five-layer structure comprising a substrate thermally conductive layer 1, a solder resist layer 2, a circuit layer 3, a functional area layer 4, and an insulating layer 5. The solder resist layer 2 covers the basic thermally conductive layer. The functional area layer 4 is disposed in the middle of the solder resist layer 2. The circuit layer 3 is disposed on the solder resist layer 2 and surrounds the functional area layer 4. The insulating layer 5 covers the circuit layer 3. The area projected orthographically from the functional area layer 4 is the functional area 17 of the bracket, and the areas projected orthographically from the circuit layer 3 and the insulating layer 5 are the non-functional areas 16 of the bracket.

[0113] Specifically, functional layer 4 is composed of fluorescent encapsulating adhesive made of white 5000K fluorescent adhesive, pink fluorescent adhesive, pink-green fluorescent adhesive, and pink-blue fluorescent adhesive. The corresponding location is the support functional area 17. Support functional area 17 is further divided into a first functional area 11, a second functional area 12, a third functional area 13, and a fourth functional area 14 by TiO2 white adhesive damming layers. The corresponding locations of the circuit layer 3 and the insulating layer 5 are the support non-functional areas 16.

[0114] In a preferred embodiment of this invention, the thermally conductive layer 1 of the substrate is made of aluminum, copper, or ceramic. The solder resist layer 2 is made of epoxy resin thermosetting ink mixed with titanium dioxide. The circuit layer 3 is made of a metal plating material. The functional area layer 4 is made of a metal plating material. The insulating layer 5 is made of epoxy resin thermosetting ink mixed with titanium dioxide.

[0115] The packaging method of the panoramic light COB structure LED light source according to this utility model embodiment includes the following steps:

[0116] S100: The LED chip is placed in the functional area 17 of the bracket and fixed on the bracket by die bonding machine with insulating glue or silver glue. After die bonding, the LED chip is baked in an oven at 150-160℃ for 2 hours ± 10 minutes to completely fix the LED chip.

[0117] S200: The LED chip is connected to the positive and negative electrodes by gold wire bonding using a gold wire bonding machine;

[0118] S300: Prepare TiO2 white glue solution, wherein the TiO2 white glue solution is prepared by mixing TiO2 powder and silica gel at a mass ratio of (1-10)g:100g;

[0119] S400: Pour the prepared TiO2 white glue solution into the glue tank of the dispensing machine. After the glue and bubbles are removed, dispense the TiO2 white glue solution as required and form the first functional area 11, the second functional area 12, the third functional area 13 and the fourth functional area 14. After dispensing, bake at 80℃ for 0.5h and then at 160℃ for 10-30min.

[0120] S500: Prepare four fluorescent adhesive solutions respectively. After preparation, apply 5000K fluorescent adhesive solution to the first functional area 11, apply pink fluorescent adhesive to the second functional area 12, apply pinkish-yellow-green fluorescent adhesive to the third functional area 13, and apply pinkish-blue fluorescent adhesive to the fourth functional area 14. After application, precipitate in an oven at 35-60℃ for 4 hours. After low-temperature baking, bake in an oven at 160℃ for 4 hours.

[0121] After the above S500 steps, the electrical properties of the material are first tested with a small current on a heating platform at 150°C (to eliminate the risk of leakage or failure to light up).

[0122] For materials with acceptable electrical properties tested using low current, spectral analysis is performed according to the specified chromaticity parameters; spectral analysis requirements are as follows: Figure 4-7 As shown:

[0123] The color coordinates of the first functional area 11 are within the 503 color gamut, where Ra>97, R9>90, and R12>90;

[0124] The color coordinates of the second functional area 12 are within the 60R color gamut, where Ra>85 and the peak wavelength is 640-650nm;

[0125] The color coordinates of the third functional area 13 are within the 50G color gamut, where Ra>55 and the peak wavelength is 540-550nm.

[0126] The color coordinates of the fourth functional area 14 are within the 55B color gamut, where Ra>50 and the peak wavelength is 445-455nm.

[0127] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A panoramic light COB structure LED light source, characterized in that, This includes LED chips, brackets, TiO2 white glue damming layer, and fluorescent encapsulating adhesive; The support is divided into a functional area and a non-functional area. Positive and negative poles are provided in the non-functional area. The functional area is divided into four equal parts in a circle, namely the first functional area, the second functional area, the third functional area and the fourth functional area, or it is surrounded by an outer ring and the middle part is divided into three equal parts, namely the first functional area, the second functional area, the third functional area and the fourth functional area. LED chips are provided in the first, second, third and fourth functional areas, and each LED chip is connected to the positive and negative electrodes by gold wire bonding. The TiO2 white glue dam layer is formed by dispensing and separates the first functional area, the second functional area, the third functional area and the fourth functional area; The fluorescent encapsulating adhesive includes a white 5000K fluorescent adhesive dispensing in the first functional area, a pink fluorescent adhesive dispensing in the second functional area, a pink-green fluorescent adhesive dispensing in the third functional area, and a pink-blue fluorescent adhesive dispensing in the fourth functional area. 2.The panoramic light COB structure LED light source according to claim 1, characterized in that, The area ratio of the first functional area to the area of ​​the second functional area to the area of ​​the third functional area to the area of ​​the fourth functional area is (1-2):1:1:

1. 3.The panoramic light COB structure LED light source according to claim 1, characterized in that, The ratio of the area of ​​the functional area of ​​the support to the area of ​​the support is in the range of (0.3-0.7):

1. 4.The panoramic light COB structure LED light source according to claim 1, characterized in that, The LED chips in the first functional area include violet LED chips with a peak wavelength of 400-415nm, blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm. The ratio of the number of violet LED chips with a peak wavelength of 400-415nm, blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm is (1-2):(1-2):(1-2):(1-2). The LED chips in the second functional area include blue LED chips with a main wavelength of 440-470nm; The LED chips in the third functional area include blue LED chips with a main wavelength of 440-470nm. The LED chips in the fourth functional area include blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm. The ratio of the number of blue LED chips with a peak wavelength of 435-445nm, blue LED chips with a main wavelength of 450-460nm, and blue LED chips with a main wavelength of 460-470nm is (1-2):(1-2):(1-2).

5. The panoramic light COB structure LED light source according to claim 1, characterized in that, The bracket is a five-layer structure comprising a substrate thermal conductive layer, a solder resist layer, a circuit layer, a functional area layer, and an insulating layer. The solder resist layer covers the substrate thermal conductive layer. The functional area layer is disposed in the center of the solder resist layer. The circuit layer is disposed on the solder resist layer and surrounds the functional area layer. The insulating layer covers the circuit layer. The area projected onto the functional area layer is the functional area of ​​the bracket. The areas projected onto the circuit layer and the insulating layer are the non-functional areas of the bracket. 6.The panoramic light COB structure LED light source according to claim 1, characterized in that, The color coordinates of the first functional area are within the 503 color gamut, where Ra>97, R9>90, and R12>90; The color coordinates of the second functional area are within the 60R color gamut, where Ra>85 and the peak wavelength is 640-650nm; The color coordinates of the third functional area are within the 50G color gamut, where Ra>55 and the peak wavelength is 540-550nm; The color coordinates of the fourth functional area are within the 55B color gamut, where Ra>50 and the peak wavelength is 445-455nm.

Images