CN110970409A - Reduce COB light source device of blue light harm - Google Patents
Reduce COB light source device of blue light harm Download PDFInfo
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- CN110970409A CN110970409A CN201911320036.7A CN201911320036A CN110970409A CN 110970409 A CN110970409 A CN 110970409A CN 201911320036 A CN201911320036 A CN 201911320036A CN 110970409 A CN110970409 A CN 110970409A
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- H—ELECTRICITY
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- 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
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- 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
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Abstract
The invention discloses a COB light source device capable of reducing blue light harm, which comprises a base, a first chip set and a second chip set, wherein the first chip set and the second chip set are arranged on the base in series, the first chip set comprises a plurality of blue light chips with the light emitting range of 465 nm-470 nm, the second chip set comprises a plurality of blue light chips with the light emitting range of 440 nm-470 nm, the second chip set obtains green light and red light by arranging and exciting yellow-green fluorescent powder and red fluorescent powder, and the green light and the red light are mixed with blue light emitted by the blue light chips of the first chip set to form white light, wherein the number of the blue light chips of the first chip set is larger than that of the blue light chips of the second chip set. Through setting up first chipset, second chipset at the base, the quantity of the blue light chip that the luminous range is 465 nm-470 nm in the first chipset is greater than the blue light chip that the luminous range is 440 nm-470 nm in the second chipset for in the white light that forms with first chipset as the owner, the blue light that is less than 460nm is weakened or eliminated, reduces blue light harm, and this light source parameter performance and price/performance ratio have higher advantage compared with purple light.
Description
Technical Field
The invention relates to the technical field of blue light prevention, in particular to a COB light source device capable of reducing blue light harm.
Background
With the continuous popularization of electronic technology, electronic products such as televisions, mobile phones, tablet computers and the like are continuously appeared, and visible light emitted by corresponding television screens, mobile phone screens, tablet screens, fluorescent lamps and various digital products contains harmful blue light. The blue light is almost ubiquitous and can not be avoided, the harmful blue light represents the blue light with the wavelength between 415nm and 455nm, the harmful blue light can directly penetrate through the crystal to directly reach the fundus retina and cause photochemical irreversible damage to the retina, so that the chromatic aberration distance of light focused in eyes is increased, blurred vision and fatigue can be caused, and the VDT syndrome can be even caused seriously.
At present, a lighting light source basically takes a blue LED high-brightness lamp bead as a light source, blue light projected by the lamp bead is irradiated on yellow fluorescent powder to project white light, but the white light contains a large amount of harmful blue light. The blue peak of many ordinary TV sets is about 450nm, and this peak value 450nm has belonged to harmful blue light scope, prevents blue light effect through pasting among the prior art and prevent blue light membrane realization, but the pad pasting prevents that blue light just also can reduce 30% harmful blue light to still can seriously deviate colors, the effect is not obvious.
At present, blue light is prevented mainly by introducing a purple light chip, the wavelength is usually about 405nm or 415nm, RGB fluorescent powder is excited to widen the spectrum width, the intensity of blue light in an LED spectrum is reduced, the common industry becomes a sunlight LED, the technology has the advantage that the intensity of blue light in the LED spectrum can be really reduced, but the technology has the defects that the purple light is harmful to a human body due to the introduction of the purple light, and meanwhile, the cost of the purple light chip is high, the efficiency of exciting the fluorescent powder is limited, so that the product has no cost performance and parameter advantages, and the technology is not popularized in LED illumination at present.
Therefore, how to eliminate or weaken the blue light below 460nm is an irrevocable technical problem.
Disclosure of Invention
The invention aims to provide a COB light source device capable of reducing blue light harm, reducing or eliminating the blue light harm and reducing the blue light prevention cost.
In order to solve the technical problem, an embodiment of the present invention provides a COB light source device capable of reducing blue light hazard, including a substrate, and a first chip set and a second chip set that are serially connected to the substrate, where the first chip set includes a plurality of blue light chips with a light emission range of 465nm to 470nm, the second chip set includes a plurality of blue light chips with a light emission range of 440nm to 470nm, the second chip set obtains green light and red light by setting and exciting yellow-green phosphor and red phosphor, and mixes the green light and red light with blue light emitted by the blue light chips of the first chip set to form white light, and the number of the blue light chips of the first chip set is greater than the number of the blue light chips of the second chip set.
The light emitting range of the blue light chip of the second chip group is 465 nm-470 nm.
The blue light chip of the first chip set is the same as the blue light chip of the second chip set.
The light emitting range of the blue light chip of the second chip group is 440 nm-465 nm.
The ratio of the number of the blue light chips of the first chip set to the number of the blue light chips of the second chip set is 3: 1-4: 1.
The display index identification is arranged on the base and corresponds to the first chipset and the second chipset.
The system also comprises blue light hazard level marks which are arranged on the first chip set and the second chip set and correspond to the first chip set and the second chip set.
Compared with the prior art, the COB light source device for reducing blue light harm provided by the embodiment of the invention has the following advantages:
according to the COB light source device for reducing blue light harm provided by the embodiment of the invention, the first chip set and the second chip set are arranged on the base, the number of blue light chips with the light emitting range of 465 nm-470 nm in the first chip set is larger than that of blue light chips with the light emitting range of 440 nm-470 nm in the second chip set, so that the formed white light is mainly the first chip set, the blue light with the light emitting range lower than 460nm is weakened or eliminated, the blue light harm is reduced, and the parameter performance and the cost performance of the light source have higher advantages compared with purple light.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a specific embodiment of a COB light source device for reducing blue light hazard according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a COB light source device for reducing blue light hazard according to an embodiment of the present invention.
In a specific embodiment, the COB light source device for reducing blue light hazard includes a base 10, and a first chip set 20 and a second chip set 30 connected in series on the base 10, where the first chip set 20 includes a plurality of blue light chips with light-emitting ranges of 465nm to 470nm, the second chip set 30 includes a plurality of blue light chips with light-emitting ranges of 440nm to 470nm, the second chip set 30 obtains green light and red light by setting and exciting yellow-green phosphor and red phosphor, and mixes with the blue light emitted by the blue light chip of the first chip set 20 to form white light, where the number of the blue light chips of the first chip set 20 is greater than the number of the blue light chips of the second chip set 30.
By arranging the first chip set 20 and the second chip set 30 on the base, the number of blue light chips with the light emitting range of 465 nm-470 nm in the first chip set 20 is larger than that of blue light chips with the light emitting range of 440 nm-470 nm in the second chip set 30, so that the formed white light is mainly the first chip set 20, the blue light with the light emitting range lower than 460nm is weakened or eliminated, the blue light harm is reduced, and the purple light parameter performance and the cost performance have higher advantages compared with purple light.
In the prior art, the ratio of blue light to green light to red light which form white light is basically kept at 1:1:1, and the proportion of the blue light is generally lower than the sum of the green light and the red light, while the invention basically keeps the total white light by the quantity of the green light and the red light which are excited by the blue light and the quantity of the blue light which is lower than the quantity of the blue light per se, the quantity of the blue light which is needed for exciting the green light and the red light is greatly reduced, and the blue light which is harmful to glasses in the white light and is below 460nm is reduced or eliminated, thereby realizing the purpose.
Since the color rendering index of an LED light source in the field of lighting is a very important index, it is necessary to eliminate the blue light hazard and simultaneously not reduce the color rendering index.
And different display indexes correspond to different numbers of the first chip set 20 and the second chip set 30.
And for the color rendering index of Ra or CRI above 80, exciting yellow-green fluorescent powder and red fluorescent powder by using a blue chip with the wavelength of about 470 nm. 470nm blue light can be used for exciting the fluorescent powder, so that the peak value of the spectrum blue light deviates below 460nm, and the harm of the blue light is eliminated.
That is, the light emitting range of the blue chip of the second chip set 30 is 465nm to 470nm, and preferably, the blue chip of the first chip set 20 is the same as the blue chip of the second chip set 30.
In one embodiment, the first chipset 20 and the second chipset 30 both use 470nm blue light chips, and the 470nm blue light is used to excite the phosphor, so that the peak value of the spectrum blue light deviates below 460nm, thereby eliminating the blue light hazard.
And for the color rendering index of Ra or CRI above 90, the light emitting range of the blue chip of the second chipset 30 is generally 440nm to 465 nm.
The number of the blue light chips in the first chip set 20 and the number of the second blue light chips are not limited in the present invention, and generally, the ratio of the number of the blue light chips in the first chip set 20 to the number of the blue light chips in the second chip set 30 is 3: 1-4: 1.
The Ra or CRI is above 90, a blue chip of about 470nm can be used as a main part, a blue chip of about 447-465nm in a certain proportion to 470nm is added as an auxiliary part, yellow-green and red fluorescent powder are simultaneously excited, and the requirement of high color rendering index is further realized, and the spectrum intensity is not high because the blue chip of about 447-465nm is low in proportion.
The 470nm excited fluorescent powder (yellow green powder and red powder) can realize the color rendering index of more than 80, but the 90 nm excited fluorescent powder has the color rendering index of more than 90, and the 90 nm excited fluorescent powder lacks the blue light part below 460nm, so that the 90 color rendering index is difficult to realize. If 90 display index is required, 470nm blue light excitation is mainly adopted in the invention, and the auxiliary blue light with the wavelength of less than 460nm is adopted, and the main light and the auxiliary light are mixed according to a certain proportion, such as main light: auxiliary 3:1 or 4:1, can be specifically adjusted according to different color temperatures, and the main principle is to control the peak intensity of blue light below 460nm to be lower than the blue light hazard level RG 0.
It should be noted that, in the present invention, blue light chips in the same chip set may be the same or different, but for convenience of calculating parameters such as display index and the like, and convenience of process manufacturing and process installation of corresponding chips, the single chips in the same chip set are generally the same, and in the installation process, centralized installation may be performed in the chip set manner, and the single chips do not need to be installed one by one, which greatly improves the installation efficiency and reduces the installation and use costs of the chips.
Of course, if some products need to display a higher index or a predetermined color temperature, some chips may be added or subtracted as needed, which is not limited in the present invention.
Because the quantity of the blue light chips that set up in different product pairs and the luminous wavelength of corresponding chip are different for its corresponding display index is different, and the colour temperature is different, and in order to distinguish light source device, in an embodiment, reduce COB light source device of blue light harm still including set up base 10 with first chipset 20 the display index sign that second chipset 30 corresponds.
Similarly, in order to identify the blue light hazard level of the product, in an embodiment, the blue light hazard reducing COB light source device further includes blue light hazard level identifiers corresponding to the first chip set 20 and the second chip set 30.
It should be noted that, in the present invention, the index mark and the blue light hazard level mark may be displayed by using numbers, professional identifiers, and the like, which is not limited in the present invention.
In summary, in the COB light source device for reducing blue light hazard provided by the embodiment of the present invention, the first chip set and the second chip set are disposed on the base, and the number of blue light chips with a light emitting range of 465nm to 470nm in the first chip set is greater than that of blue light chips with a light emitting range of 440nm to 470nm in the second chip set, so that the first chip set is mainly used in the formed white light, blue light with a light emitting range lower than 460nm is weakened or eliminated, and blue light hazard is reduced.
The COB light source device for reducing blue light harm provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a reduce COB light source device of blue light harm, its characterized in that includes the base and establishes ties and sets up the first chipset, the second chipset of base, first chipset includes that a plurality of luminous scope are 465nm ~ 470 nm's blue light chip, the second chipset includes that a plurality of luminous scope are 440nm ~ 470 nm's blue light chip, the second chipset is through setting up and arousing yellow green phosphor powder and red phosphor powder and obtain green glow and ruddiness, and with the blue light mixture formation white light of the blue light chip emission of first chipset, wherein, the quantity of the blue light chip of first chipset is greater than the quantity of the blue light chip of second chipset.
2. The COB light source device for reducing blue light hazard of claim 1, wherein the blue light chip of the second chipset has a light emitting range of 465nm to 470 nm.
3. The COB light source device for reducing blue light hazards of claim 2, wherein the blue light chips of the first chip set are the same as the blue light chips of the second chip set.
4. The COB light source device for reducing blue light hazard of claim 1, wherein the blue light chip of the second chipset has a light emission range of 440nm to 465 nm.
5. The COB light source device for reducing blue light harm of any one of claims 1-4, wherein the ratio of the number of the blue light chips of the first chip set to the number of the blue light chips of the second chip set is 3: 1-4: 1.
6. The COB light source device for reducing blue light hazards according to claim 5, further comprising display index markers disposed on the base and corresponding to the first chip set and the second chip set.
7. The COB light source device for reducing blue light hazards of claim 6, further comprising blue light hazard level indicators disposed on the first chipset and the second chipset.
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| CN201911320036.7A CN110970409A (en) | 2019-12-19 | 2019-12-19 | Reduce COB light source device of blue light harm |
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| CN201911320036.7A CN110970409A (en) | 2019-12-19 | 2019-12-19 | Reduce COB light source device of blue light harm |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112786575A (en) * | 2020-12-30 | 2021-05-11 | 广州硅能照明有限公司 | Full-spectrum LED light source |
| WO2021135752A1 (en) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Backlight module, electronic device, and light bar |
| CN113552745A (en) * | 2020-04-23 | 2021-10-26 | 华为技术有限公司 | Display device and driving method thereof |
| CN113921683A (en) * | 2021-09-06 | 2022-01-11 | 广州硅能照明有限公司 | Colorful COB light source |
| US11265983B2 (en) | 2018-01-11 | 2022-03-01 | Ecosense Lighting Inc. | Switchable systems for white light with high color rendering and biological effects |
| US11287090B2 (en) | 2013-08-29 | 2022-03-29 | Ecosense Lighting Inc. | Circadian-friendly LED light source |
| US11308849B2 (en) | 2018-01-11 | 2022-04-19 | Ecosense Lighting Inc. | Display lighting systems with circadian effects |
| CN115164329A (en) * | 2022-07-08 | 2022-10-11 | 芳华国际控股(广东)有限公司 | Full-intelligent photocatalyst disinfection and sterilization machine and intelligent control method thereof |
| WO2023005322A1 (en) * | 2021-07-27 | 2023-02-02 | 荣耀终端有限公司 | Backlight source and manufacturing method therefor, display apparatus, and electronic device |
| CN115763672A (en) * | 2023-01-09 | 2023-03-07 | 四川世纪和光科技发展有限公司 | Near-natural light LED packaging component, packaging method and lighting device |
| US11783748B2 (en) | 2018-11-08 | 2023-10-10 | Korrus, Inc. | Display lighting systems with bioactive lighting |
| US11938339B2 (en) | 2018-11-08 | 2024-03-26 | Korrus, Inc. | Switchable bioactive lighting |
| US12007650B2 (en) | 2017-08-04 | 2024-06-11 | Korrus, Inc. | Low blue light displays |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11287090B2 (en) | 2013-08-29 | 2022-03-29 | Ecosense Lighting Inc. | Circadian-friendly LED light source |
| US11725783B2 (en) | 2013-08-29 | 2023-08-15 | Korrus, Inc. | Circadian-friendly LED light source |
| US12007650B2 (en) | 2017-08-04 | 2024-06-11 | Korrus, Inc. | Low blue light displays |
| US11308849B2 (en) | 2018-01-11 | 2022-04-19 | Ecosense Lighting Inc. | Display lighting systems with circadian effects |
| US11265983B2 (en) | 2018-01-11 | 2022-03-01 | Ecosense Lighting Inc. | Switchable systems for white light with high color rendering and biological effects |
| US11783748B2 (en) | 2018-11-08 | 2023-10-10 | Korrus, Inc. | Display lighting systems with bioactive lighting |
| US11938339B2 (en) | 2018-11-08 | 2024-03-26 | Korrus, Inc. | Switchable bioactive lighting |
| WO2021135752A1 (en) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Backlight module, electronic device, and light bar |
| CN113552745A (en) * | 2020-04-23 | 2021-10-26 | 华为技术有限公司 | Display device and driving method thereof |
| CN112786575A (en) * | 2020-12-30 | 2021-05-11 | 广州硅能照明有限公司 | Full-spectrum LED light source |
| WO2023005322A1 (en) * | 2021-07-27 | 2023-02-02 | 荣耀终端有限公司 | Backlight source and manufacturing method therefor, display apparatus, and electronic device |
| CN113921683A (en) * | 2021-09-06 | 2022-01-11 | 广州硅能照明有限公司 | Colorful COB light source |
| CN113921683B (en) * | 2021-09-06 | 2024-04-02 | 硅能光电半导体(广州)有限公司 | Colorful COB light source |
| CN115164329A (en) * | 2022-07-08 | 2022-10-11 | 芳华国际控股(广东)有限公司 | Full-intelligent photocatalyst disinfection and sterilization machine and intelligent control method thereof |
| CN115763672A (en) * | 2023-01-09 | 2023-03-07 | 四川世纪和光科技发展有限公司 | Near-natural light LED packaging component, packaging method and lighting device |
| CN115763672B (en) * | 2023-01-09 | 2023-06-13 | 四川世纪和光科技发展有限公司 | Near natural light LED packaging member, packaging method and lighting device |
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