CN111599798A - Blue-green light adjustable LED artificial lighting device - Google Patents
Blue-green light adjustable LED artificial lighting device Download PDFInfo
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- CN111599798A CN111599798A CN202010377895.6A CN202010377895A CN111599798A CN 111599798 A CN111599798 A CN 111599798A CN 202010377895 A CN202010377895 A CN 202010377895A CN 111599798 A CN111599798 A CN 111599798A
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- 239000000758 substrate Substances 0.000 claims abstract description 108
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 238000009792 diffusion process Methods 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000741 silica gel Substances 0.000 claims description 12
- 229910002027 silica gel Inorganic materials 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Inorganic materials [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 8
- 230000002060 circadian Effects 0.000 abstract description 4
- 238000001228 spectrum Methods 0.000 description 11
- YJPIGAIKUZMOQA-UHFFFAOYSA-N Melatonin Natural products COC1=CC=C2N(C(C)=O)C=C(CCN)C2=C1 YJPIGAIKUZMOQA-UHFFFAOYSA-N 0.000 description 8
- 229960003987 melatonin Drugs 0.000 description 8
- DRLFMBDRBRZALE-UHFFFAOYSA-N melatonin Chemical compound COC1=CC=C2NC=C(CCNC(C)=O)C2=C1 DRLFMBDRBRZALE-UHFFFAOYSA-N 0.000 description 8
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
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- Engineering & Computer Science (AREA)
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- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Led Device Packages (AREA)
Abstract
The invention provides a blue-green light adjustable LED artificial lighting device which comprises a substrate, an LED light-emitting element group, a bonding wire, a substrate pad, a first enclosing wall, a phosphor containing layer and an electrode, wherein the LED light-emitting element group comprises at least two LED light-emitting elements with different emission light wave crests, the substrate is provided with a plurality of control circuits for controlling the input power of the corresponding LED light-emitting elements, the control circuits are connected with the LED light-emitting elements, the LED light-emitting element group, the substrate pad and the electrode are arranged on the substrate, the LED light-emitting elements are electrically connected with the substrate pad through the bonding wire, the electrode is connected with the substrate pad, the phosphor containing layer is coated on the LED light-emitting elements, and the first enclosing wall is arranged at the periphery of the LED light-emitting element group. The invention adjusts the blue-green light intensity by controlling the input power of different light-emitting elements so as to adapt to different circadian illumination requirements and help people to achieve energetic or leisure and relaxed states according to the daily life mode.
Description
Technical Field
The invention relates to the technical field of light emitting diode packaging, in particular to a blue-green light adjustable LED artificial lighting device.
Background
With the progress of semiconductor lighting technology, LED lighting products have begun to be applied to various traditional lighting fields, and the requirements of people on LED lighting gradually turn from pure environmental protection and energy conservation to the pursuit of health and comfort, i.e. the requirements of consumers for psychological and physiological health are met, and the people mainly play a 'health lighting' brand. In this process, "artificial lighting" is gradually mined out, the corresponding spectrum is also carefully designed, and the corresponding "artificial lighting" LED devices are also starting to be introduced into the market.
The concept of lighting has been known for a long time, and merely in view of the technical bottleneck, cost-effective devices have not been found to be popular. As shown in figure 1, the melatonin is a sleep hormone and has strong sensitivity to light with blue-green wavelength of about 480 nm. More blue-green light can inhibit the body from generating melatonin, so that the human body is more excited and full of energy in work. Similarly, the lower blue-green light intensity can reduce the interference on the melatonin of the human body to the maximum extent, thereby improving the sleep quality.
The leading semiconductor device solution provider, samsung electronics, recently introduced the first "people's rhythm lighting" LED device-LM 302N, and through the well-designed spectrum, LM302N series products can adjust the ideal level of melatonin fading indoors, helping people to achieve energetic or relaxed state according to the daily life model. The LM302N of Samsung utilizes the accurately designed spectrum, the blue-green light intensity of the optimal dosage to adapt to the illumination requirements of different circadian rhythms, as shown in figure 2, the LM 302N-DAY excitation type can inhibit the level of in-vivo melatonin in daytime, and the inhibition capability of the LM302N is improved by more than 18% compared with that of the ordinary LED illumination. The exciting type series products can provide different color temperature ranges of 3000K to 6500K, and are suitable for various indoor applications such as schools, offices, libraries, industrial places and the like, so that the alertness and energy level of a human body are enhanced. The LM 302N-NITE relaxed form provides adequate brightness without hindering melatonin release, helping people maintain desirable hormone levels. Compared with the common LED device, the LM 302N-NITE relaxation type enables melatonin released by a human body under light to be 5% more than usual (according to clinical test data), so that the relaxation degree of the human body is increased, and the sleep regulation is facilitated. In addition, the color temperature range of the LM 302N-NITE relaxed type ranges from 1800K to 4000K, which can provide a high degree of design flexibility and is suitable for various night lighting applications. LM302N DAY-excited and NITE-relaxed types, both of which may also be combined in a light fixture to help a person regulate the body's natural circadian rhythm for 24 hours. This dual channel lighting application would be the best choice for people who are now most indoors, against a chaotic biological clock.
The products of 'human factor illumination' in the current market are devices with single spectrum developed aiming at a certain working or living scene, or two independent devices with different spectrums are combined in a lamp to realize the illumination environment of different scenes. The single encapsulation device that has not yet found on the market that can send two different spectra simultaneously, the LED people that blue-green light adjustable more does not appear is because of lighting device, and COB is as multi-chip module encapsulation, through circuit structure's optimal design, can realize the demand of the different blue-green light spectrum of modulation.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a blue-green light adjustable LED artificial lighting device, two LED light-emitting elements with different emission wave crests are assembled on a substrate, two independent circuits are designed to control the light-emitting elements with different emission wavelengths, and the input power of different light-emitting elements is controlled to adjust the blue-green light intensity so as to adapt to the lighting requirements of different rhythms at day and night, thereby helping people to achieve energetic or relaxed states according to the daily life mode.
The invention provides a blue-green light adjustable LED artificial lighting device which comprises a substrate, an LED light-emitting element group, a bonding wire, a substrate pad, a first enclosing wall, a phosphor containing layer and an electrode, wherein the LED light-emitting element group comprises at least two LED light-emitting elements with different emission light wave crests, the substrate is provided with a plurality of control circuits for controlling the input power of the corresponding LED light-emitting elements, the control circuits are connected with the LED light-emitting elements, the LED light-emitting element group, the substrate pad and the electrode are arranged on the substrate, the LED light-emitting elements are electrically connected with the substrate pad through the bonding wire, the electrode is connected with the substrate pad, the phosphor containing layer is coated on the LED light-emitting elements, the first enclosing wall is arranged at the periphery of the LED light-emitting element group and the phosphor containing layer and wraps the LED light-emitting element group, The phosphor-containing layer.
Further, the LED light emitting element group includes a first LED light emitting element and a second LED light emitting element; the first LED light-emitting element emits blue light with a light-emitting peak wavelength of 440-460 nm or 475-485 nm; the second LED light-emitting element emits blue light having a light emission peak wavelength of about 440nm to 460nm, or emits blue light having a light emission peak wavelength of about 475nm to 485 nm.
Furthermore, the first LED light emitting element and the second LED light emitting element are formed by electrically connecting a plurality of LED chips through the bonding wires.
Further, the electrodes include a first electrode and a second electrode, the substrate pads include a first substrate pad and a second substrate pad, the first electrode is connected to the first substrate pad, and the second electrode is connected to the second substrate pad.
Furthermore, the second substrate bonding pad encloses a circular area, the second LED light emitting element is disposed in the circular area, the first substrate bonding pad and the second substrate bonding pad enclose an annular area, and the first LED light emitting element is disposed in the annular area.
Further, the first LED light emitting element and the second LED light emitting element are disposed at intervals in an area of the first enclosing wall.
Further, the phosphor-containing layer is specifically a phosphor-containing silica gel layer, the phosphor-containing silica gel layer includes a red phosphor and a yellow-green phosphor, the red phosphor emits red light with a wavelength of 620-660nm, and the yellow-green phosphor emits yellow-green light with a wavelength of 500-550 nm.
Further, the red phosphor is CaAlSiN3: eu red phosphor with particle size of 17-24 μm, and Lu as yellow-green phosphor3Al5O12: a Ce yellow-green phosphor having a particle size of 17 to 24 μm.
The fluorescent material coating device further comprises a diffusing agent containing layer and a second enclosing wall, wherein the second enclosing wall is arranged on the first enclosing wall, and the diffusing agent containing layer covers the fluorescent material containing layer and is contained in the second enclosing wall.
Further, the particle diameter of the diffusion agent containing layer is 5um-20um spherical particles, and the diffusion agent containing layer is a BN diffusion agent containing layer and TiO2A diffusion agent-containing layer and BaCO3Diffusing agent-containing layer and BaSO4Diffusion agent-containing layer and SiO2Diffusing agent-containing layer and Al2O3A diffusion agent containing layer, wherein the weight ratio of the diffusion agent in the diffusion agent containing layer is 5-20%; the substrate is a planar substrate, the thickness of the planar substrate is 0.7-1.5mm, and the planar substrate is Al2O3A planar substrate, an AlN planar substrate, a Cu planar substrate, an Al planar substrate or a composite material planar substrate; the thickness of the second enclosing wall is 0.2-0.3 mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a blue-green light adjustable LED artificial lighting device which comprises a substrate, an LED light-emitting element group, a bonding wire, a substrate pad, a first enclosing wall, a phosphor containing layer and an electrode, wherein the LED light-emitting element group comprises at least two LED light-emitting elements with different emission light wave crests, the substrate is provided with a plurality of control circuits for controlling the input power of the corresponding LED light-emitting elements, the control circuits are connected with the LED light-emitting elements, the LED light-emitting element group, the substrate pad and the electrode are arranged on the substrate, the LED light-emitting elements are electrically connected with the substrate pad through the bonding wire, the electrode is connected with the substrate pad, the phosphor containing layer is coated on the LED light-emitting elements, and the first enclosing wall is arranged at the periphery of the LED light-emitting element group. The LED light-emitting device is characterized in that two LED light-emitting elements with different emission wave crests are assembled on one substrate, two independent circuits are designed to control the light-emitting elements with different emission wavelengths, and the input power of the different light-emitting elements is controlled to adjust the blue-green light intensity so as to adapt to different circadian illumination requirements and help people to achieve energetic or leisure and relaxed states according to daily life modes.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a melatonin sensitivity spectrum in the background of the invention;
FIG. 2 illustrates a prior art LED light emitting device and its corresponding light emission spectrum in the background of the invention;
FIG. 3 is a first cross-sectional view of a blue-green light adjustable LED artificial lighting device according to an embodiment of the invention;
FIG. 4 is an equivalent circuit diagram of the internal connection of the LED chip according to the embodiment of the present invention;
FIG. 5 is a first front view of a blue-green light adjustable LED artificial lighting device according to an embodiment of the present invention;
fig. 6 is a comparison spectrum of I1 ═ 0 and I1 ═ I2 in the examples of the present invention;
FIG. 7 is a second cross-sectional view of a blue-green light adjustable LED artificial lighting device according to an embodiment of the invention;
fig. 8 is a second front view of the blue-green light adjustable LED artificial lighting device according to the embodiment of the invention.
In the figure: 1. a substrate; 2. a first LED light emitting element; 3. a second LED light emitting element; 4. a bonding wire; 5. a first substrate pad; 6. a second substrate pad; 7. a first enclosing wall; 8. a phosphor-containing layer; 9. a first electrode; 10. a second electrode; 11. a common electrode; 12. a diffusing agent-containing layer; 13. a second enclosing wall; 14. a third electrode; 15. and a fourth electrode.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A blue-green light adjustable LED artificial lighting device is shown in figure 3 and comprises a substrate 1, an LED light-emitting element group, a bonding wire 4, a substrate pad, a first enclosing wall 7, a phosphor-containing layer 8 and electrodes, wherein the LED light-emitting element group comprises at least two LED light-emitting elements with different emission light wave crests, a plurality of control circuits for controlling the input power of the corresponding LED light-emitting elements are arranged on the substrate 1, the control circuits are connected with the LED light-emitting elements, the LED light-emitting element group, the substrate pad and the electrodes are arranged on the substrate 1, the LED light-emitting elements are electrically connected with the substrate pad through the bonding wire 4, the electrodes are connected with the substrate pad, the phosphor-containing layer 8 contains phosphors for absorbing and converting the light from the LED light-emitting elements, the phosphor-containing layer 8 is coated on the LED light-emitting elements, the first enclosing wall 7 is arranged at the periphery of the, A phosphor-containing layer 8.
As shown in fig. 3, the LED light emitting element group includes a first LED light emitting element 2 and a second LED light emitting element 3, and a substrate 1 is provided with a dual independent circuit; the first LED light emitting element 2 emits blue light having an emission peak wavelength of about 440nm to 460nm, or emits blue light having an emission peak wavelength of about 475nm to 485 nm; the second LED light emitting element 3 emits blue light having an emission peak wavelength of about 440nm to 460nm or blue light having an emission peak wavelength of about 475nm to 485 nm. In this embodiment, the first LED light emitting element 2 emits light with a peak wavelength of 440nm to 460nm, and the second LED light emitting element 3 emits light with a peak wavelength of 475nm to 485 nm. The substrate 1 is a planar substrate with two independent control circuits thereon, the thickness of the planar substrate is 0.7-1.5mm, and the planar substrate is Al2O3Planar substrate, AlN planarA substrate, a Cu planar substrate, an Al planar substrate or a composite planar substrate. Preferably, the phosphor-containing layer 8 is specifically a phosphor-containing silica gel layer, the phosphor-containing silica gel layer includes a red phosphor and a yellow-green phosphor, the red phosphor emits red light with a wavelength of 620-550 nm, and the yellow-green phosphor emits yellow-green light with a wavelength of 500-550 nm.
The LED light-emitting elements with two different emission wave crests are assembled on one substrate, two independent circuits are designed to control the LED light-emitting elements with different emission wavelengths, and the blue-green light intensity is adjusted by controlling the input power of the different LED light-emitting elements so as to adapt to different circadian illumination requirements and help people to achieve energetic or relaxing states according to daily life modes.
As shown in fig. 4, preferably, the first LED light emitting element 2 (LED chip 1 in fig. 4) and the second LED light emitting element 3 (LED chip 2 in fig. 4) are each formed by electrically connecting a plurality of LED chips by bonding wires 4. Preferably, the electrodes comprise a first electrode 9 and a second electrode 10, the first electrode 9 and the second electrode 10 are arranged on the substrate 1, the substrate pads comprise a first substrate pad 5 and a second substrate pad 6, the first electrode 9 is connected with the first substrate pad 5, and the second electrode 10 is connected with the second substrate pad 6. As shown in FIG. 5, the substrate 1 is Al2O3The ceramic plane substrate is 1.0mm thick, two independent control circuits are arranged on the ceramic plane substrate, the first substrate bonding pad 5 and the first electrode 9 are connected into one independent circuit, the second substrate bonding pad 6 and the second electrode 10 are connected into the other independent circuit, and the cathodes of the two circuits are connected with the common electrode 11. The first LED light-emitting element 2 emits blue light with the wavelength of the light-emitting peak near 480nm, the blue light is arranged in an annular area formed by the first substrate bonding pad 5 and the second substrate bonding pad 6, and the LED chips and the first substrate bonding pad 5 are electrically connected through bonding wires 4; the second LED light-emitting element 3 emits blue light with the light-emitting peak wavelength near 440nm, is arranged in a circular area surrounded by the second substrate bonding pads 6, and is electrically connected among the LED chips and between the LED chips and the second substrate bonding pads 6 through bonding wires 4; the phosphor-containing silica gel layer is coated on the LED chip, and the phosphor-containing silica gel layer contains red phosphor and green fluorescenceIn this embodiment, CaAlSiN 3: eu, emitting red light with the wavelength of 627 nm. The yellow-green phosphor used was Lu3Al5O 12: ce, green light with emission wavelength of 535 nm. Covering the first LED light-emitting element 2 and the second LED light-emitting element 3 with a phosphor-containing silica gel layer, wherein the height of the phosphor-containing silica gel layer is not more than that of the first enclosing wall 7, the height of the first enclosing wall 7 is within the range of 0.5 +/-0.1 mm, placing for 2-4h at normal temperature to enable the red phosphor and the yellow-green phosphor to be deposited on the first LED light-emitting element 2 and the second LED light-emitting element 3, and then turning to an oven with the temperature of 150 +/-10 ℃ for baking for 2 h.
In this example, the particle size of the red phosphor is in the range of 17 to 24 μm and the particle size of the yellow-green phosphor is in the range of 17 to 24 μm in order to make the red phosphor and the yellow-green phosphor settle down more favorably.
The first LED lighting element 2 and the second LED lighting element 3 input currents I1 and I2, and the light intensity of blue-green light at 480nm can be adjusted. As a special example, I2 is fixed, and different currents are input to I1: when I1 is 0.5 × I2, both first LED light-emitting element 2 and second LED light-emitting element 3 light up and simultaneously excite red phosphor R627 and yellow-green phosphor G535; when I1 is 0, the first LED lighting element 2 is not lit, i.e., only a light source of 440nm excites the red phosphor R627 and the yellow-green phosphor G535. The spectrum is shown in fig. 6, it can be seen that the spectrum of the LED artificial lighting device has obvious intensity difference at 480nm, the proportion of I1 and I2 is adjusted, and the blue-green light intensity at 480nm can be freely adjusted, so that the purpose of the blue-green light adjustable LED artificial lighting device of the present embodiment is achieved.
As shown in fig. 7, the fluorescent lamp further comprises a diffusing agent-containing layer 12 and a second wall 13, wherein the second wall 13 is provided on the first wall 7, and the diffusing agent-containing layer 12 is covered on the fluorescent material-containing layer 8 and contained in the second wall 13; the thickness of the second wall 13 is 0.2-0.3mm, the diffusing agent containing layer 12 is coated on the phosphor containing silica gel layer, and then the phosphor containing silica gel layer is baked in an oven at 150 +/-10 ℃ for 2 h. Preferably, the diffusing agent-containing layer 12 contains a diffusing agent, the diffusing agent is spherical particles having a particle diameter of 5um to 20um, and the diffusing agent-containing layer 12 contains a BN diffusing agent having a small light absorption, TiO2Diffusing agent-containing layer 12, BaCO3Diffusing agent-containing layer 12, BaSO4Diffusion agent-containing layer 12, SiO2Diffusing agent-containing layer 12 and Al2O3A diffusion agent-containing layer 12, wherein the diffusion agent-containing layer 12 contains 5 to 20% by weight of a diffusion agent, and in this embodiment, SiO having a particle size of 10 μm and a weight ratio of 15% is used2Spherical particles. The lighting device of this embodiment, except that can realize that blue-green light is adjustable, the red green light that two kinds of different emission peak wavelength's LED light emitting component sent and the red green light that sends after the fluorophor absorbs contains layer 12 through the diffusant, under the diffusant effect, through numerous refraction and reflection, intensive mixing, the light that makes send is more even.
In one embodiment, the first LED lighting element 2 and the second LED lighting element 3 are disposed at intervals in the area of the first enclosing wall 7. As shown in fig. 8, the LED lighting device includes a ceramic substrate 1, a first electrode 9, a second electrode 10, a third electrode 14, a fourth electrode 15, a first LED lighting element 2, a second LED lighting element 3, a first enclosing wall 7, and a phosphor-containing layer 8 covering the LED lighting elements. In this embodiment, the first LED light emitting element 2 emits blue light having an emission peak wavelength of about 480nm, includes three LED chip sets arranged at intervals in the area of the first enclosing wall 7, and the first LED light emitting element 2 inputs and outputs current from the first electrode 9 and the fourth electrode 15; the second LED light emitting element 3 emits blue light having an emission peak wavelength of about 440nm, includes four LED chip groups arranged at intervals in the region of the first enclosing wall 7, and the second LED light emitting element 3 inputs and outputs current from the second electrode 10 and the third electrode 14.
The invention provides a blue-green light adjustable LED artificial lighting device which comprises a substrate, an LED light-emitting element group, a bonding wire, a substrate pad, a first enclosing wall, a phosphor containing layer and an electrode, wherein the LED light-emitting element group comprises at least two LED light-emitting elements with different emission light wave crests, the substrate is provided with a plurality of control circuits for controlling the input power of the corresponding LED light-emitting elements, the control circuits are connected with the LED light-emitting elements, the LED light-emitting element group, the substrate pad and the electrode are arranged on the substrate, the LED light-emitting elements are electrically connected with the substrate pad through the bonding wire, the electrode is connected with the substrate pad, the phosphor containing layer is coated on the LED light-emitting elements, and the first enclosing wall is arranged at the periphery of the LED light-emitting element group. The LED light-emitting device is characterized in that two LED light-emitting elements with different emission wave crests are assembled on one substrate, two independent circuits are designed to control the light-emitting elements with different emission wavelengths, and the input power of the different light-emitting elements is controlled to adjust the blue-green light intensity so as to adapt to different circadian illumination requirements and help people to achieve energetic or leisure and relaxed states according to daily life modes.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. LED artificial lighting device that blue-green light is adjustable, its characterized in that: the LED light-emitting component group comprises at least two LED light-emitting components with different emission light wave crests, a plurality of control circuits for controlling input power of the corresponding LED light-emitting components are arranged on the substrate, the control circuits are connected with the LED light-emitting components, the LED light-emitting component group, the substrate bonding pads and the electrodes are arranged on the substrate, the LED light-emitting components and the substrate bonding pads are electrically connected through the bonding wires, the electrodes are connected with the substrate bonding pads, the phosphor-containing layer is coated on the LED light-emitting components, and the first enclosing wall is arranged on the periphery of the LED light-emitting component group and the phosphor-containing layer and wraps the LED light-emitting component group and the phosphor-containing layer.
2. The blue-green adjustable LED artificial lighting device of claim 1, wherein: the LED light-emitting element group comprises a first LED light-emitting element and a second LED light-emitting element; the first LED light-emitting element emits blue light with a light-emitting peak wavelength of 440-460 nm or 475-485 nm; the second LED light-emitting element emits blue light having a light emission peak wavelength of about 440nm to 460nm, or emits blue light having a light emission peak wavelength of about 475nm to 485 nm.
3. The blue-green adjustable LED artificial lighting device of claim 2, wherein: the first LED light-emitting element and the second LED light-emitting element are formed by electrically connecting a plurality of LED chips through the bonding wires.
4. The blue-green adjustable LED ergonomic lighting device of claim 3 wherein: the electrodes comprise a first electrode and a second electrode, the substrate bonding pad comprises a first substrate bonding pad and a second substrate bonding pad, the first electrode is connected with the first substrate bonding pad, and the second electrode is connected with the second substrate bonding pad.
5. The blue-green adjustable LED ergonomic lighting device of claim 4 wherein: the second substrate bonding pad is encircled to form a circular area, the second LED light-emitting element is arranged in the circular area, the first substrate bonding pad and the second substrate bonding pad are encircled to form an annular area, and the first LED light-emitting element is arranged in the annular area.
6. The blue-green adjustable LED ergonomic lighting device of claim 3 wherein: the first LED light-emitting element and the second LED light-emitting element are arranged in the area of the first enclosing wall at intervals.
7. The blue-green adjustable LED artificial lighting device of claim 2, wherein: the phosphor-containing layer is specifically a phosphor-containing silica gel layer, the phosphor-containing silica gel layer comprises a red phosphor and a yellow-green phosphor, the red phosphor emits red light with the wavelength of 620-550 nm, and the yellow-green phosphor emits yellow-green light with the wavelength of 500-550 nm.
8. The blue-green adjustable LED ergonomic lighting device of claim 7 wherein: the red phosphor is CaAlSiN3: eu red phosphor with particle size of 17-24 μm, and Lu as yellow-green phosphor3Al5O12: a Ce yellow-green phosphor having a particle size of 17 to 24 μm.
9. The blue-green adjustable LED ergonomic lighting device of claim 7 wherein: the fluorescent material film further comprises a diffusing agent containing layer and a second enclosing wall, wherein the second enclosing wall is arranged on the first enclosing wall, and the diffusing agent containing layer covers the fluorescent material containing layer and is contained in the second enclosing wall.
10. The blue-green adjustable LED ergonomic lighting device of claim 9 wherein: the particle diameter of the diffusant containing layer is 5um-20um, and the diffusant containing layer is a BN diffusant containing layer and TiO2A diffusion agent-containing layer and BaCO3Diffusing agent-containing layer and BaSO4Diffusion agent-containing layer and SiO2Diffusing agent-containing layer and Al2O3A diffusion agent containing layer, wherein the weight ratio of the diffusion agent in the diffusion agent containing layer is 5-20%; the substrate is a planar substrate, the thickness of the planar substrate is 0.7-1.5mm, and the planar substrate is Al2O3A planar substrate, an AlN planar substrate, a Cu planar substrate, an Al planar substrate or a composite material planar substrate; the thickness of the second enclosing wall is 0.2-0.3 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377895.6A CN111599798A (en) | 2020-05-07 | 2020-05-07 | Blue-green light adjustable LED artificial lighting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377895.6A CN111599798A (en) | 2020-05-07 | 2020-05-07 | Blue-green light adjustable LED artificial lighting device |
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| CN111599798A true CN111599798A (en) | 2020-08-28 |
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|---|---|---|---|
| CN202010377895.6A Pending CN111599798A (en) | 2020-05-07 | 2020-05-07 | Blue-green light adjustable LED artificial lighting device |
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| Country | Link |
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| CN (1) | CN111599798A (en) |
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