CN108134003A - A kind of anti-blue light encapsulation LED light emitting device and its backlight module - Google Patents
A kind of anti-blue light encapsulation LED light emitting device and its backlight module Download PDFInfo
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- CN108134003A CN108134003A CN201711483855.4A CN201711483855A CN108134003A CN 108134003 A CN108134003 A CN 108134003A CN 201711483855 A CN201711483855 A CN 201711483855A CN 108134003 A CN108134003 A CN 108134003A
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- 238000005538 encapsulation Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 230000007704 transition Effects 0.000 claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 claims abstract description 25
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000084 colloidal system Substances 0.000 claims abstract description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 241001062009 Indigofera Species 0.000 description 5
- 230000005142 aphototropism Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 210000001508 eye Anatomy 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 208000020564 Eye injury Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000000695 excitation spectrum Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
Classifications
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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
- 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
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Abstract
The invention discloses a kind of anti-blue light encapsulation LED light emitting device and its backlight modules, including at least one LED blue chips, fluorescence conversion layer is covered on the LED blue chips, the fluorescence conversion layer includes white light conversion phosphor and thermosetting property colloid, and the fluorescence conversion layer further includes the fluorescence transition material that blue light of the energy absorption peak wavelength in 435 475nm wavelength bands makes the peak wavelength red shift of blue light；The anti-blue light is equipped in the backlight module and encapsulates LED light emitting device.The present invention is intended to provide a kind of anti-blue light encapsulation LED light emitting device and its backlight module, make LED light emitting device and the backlight module with the LED light emitting device that can not only reduce the harm of blue light, but also original encapsulation color dot and brightness can be kept.
Description
Technical field
The present invention relates to LED technology field, specifically a kind of anti-blue light encapsulation LED light emitting device and its backlight module.
Background technology
Anti-blue light has become the new hot spot of LED field, and demand of the market to anti-blue light product is also increasing.Conventional blu-ray
Largely it is present in the light that computer monitor, fluorescent lamp, mobile phone, digital product, display screen, LED etc. are sent out, in the wavelength
Blue light can increase the macular area toxin amount in eyes, serious threat human eye health.Harmful indigo plant between 400nm-450nm
Light, energy is maximum, human eye is endangered maximum.
At present, LED anti-blue lights technology is broadly divided into two kinds：A kind of method is modular structure, is increased in modular structure specific
The material of wavelength filtration, makes it filter specific blue-wavelength portion, can effectively reduce harmful blue light energy, but reduce blue light energy
It can change module RGB ratios, module color dot is caused to change；Another method is the indigo plant grown during LED encapsulation using wavelength
Optical chip, be staggered the 435nm part maximum to human eye injury, effectively reduces shortwave blue light components, but can make using long wave chip
LED package brightness reduces.
Therefore, it on the basis of existing LED encapsulation technologies, develops a kind of LED that can both reduce blue light harm and shines
Device, and it can be allowd to keep original encapsulation color dot and brightness and realize volume production, it is clear that it is that there is an urgent need for solutions for the art
Certainly the technical issues of.
Invention content
To solve the deficiency in the prior art, the purpose of the present invention is to provide a kind of anti-blue lights to encapsulate LED light emitting device
And its backlight module, make LED light emitting device and the backlight module with the LED light emitting device that can both reduce the harm of blue light,
Original encapsulation color dot and brightness can be kept again.
To solve the above problems, the present invention provides a kind of anti-blue light encapsulation LED light emitting device, including at least one LED indigo plants
Optical chip, fluorescence conversion layer is covered on the LED blue chips, and the fluorescence conversion layer includes white light conversion phosphor and thermosetting
Property colloid, which is characterized in that the fluorescence conversion layer further includes can indigo plant of the absorption peak wavelength in 435-475nm wavelength bands
Light makes the fluorescence transition material of the peak wavelength red shift of blue light.
Preferably, weight percent of the fluorescence transition material in the fluorescence conversion layer is 2%-30%.
Preferably, the fluorescence transition material has transmitting in 465-500nm wavelength bands.
Preferably, the fluorescence transition material is one or more in LuAG, LuGaAG, GaYAG, γ-ALON.
Preferably, the absorption peak of the fluorescence transition material is in 410-445nm wavelength bands, the half of absorption peak
Wave is wide to be less than 60nm.
Preferably, the fluorescence transition material will be less than the fluorescence in 455nm wavelength, to the absorbability of blue light
Transition material absorbs 20% during the peak-peak of blue light.
Preferably, the fluorescence transition material is more than in the wavelength band of 455nm in wavelength to the absorbability of blue light
It is less than the wavelength band that wavelength is less than 455nm.
Preferably, the thermosetting property colloid is one or more in silica gel, silicones or epoxy resin.
A kind of anti-blue light encapsulates LED backlight module, and including LED light emitting device, the LED light emitting device is based on more than institute
The anti-blue light encapsulation LED light emitting device stated.
Using above-mentioned preferred embodiment, compared with prior art, the present invention has the following advantages：
1st, LED light emitting device using the present invention, addition energy absorption peak wavelength is in 435- in fluorescence conversion layer
Blue light in 475nm wavelength bands makes the fluorescence transition material of the peak wavelength red shift of blue light, due to harmful shortwave blue light peak
It is worth red shift of wavelength, avoids the shortwave blue light of the 435nm wavelength larger to human eye injury effect, so as to plays protection eye well
The effect of eyeball.
2nd, the fluorescence transition material has strong absorption in 410-445nm wavelength bands, the wave band model on 455nm wavelength
It is seldom to enclose the interior absorption to blue light components so that harmful shortwave blue light of LED light emitting device greatly reduces, and this is glimmering after encapsulation
Light conversion material has transmitting enhancing in 465-500nm wavelength bands, can supplement the indigo plant needed for excimer LED light portions
Light, makes tri- colour balances of RGB in LED light emitting device, LED is maintained to be not added with the color dot before special fluorescent powder constant.
3rd, LED light emitting device using the present invention can be reached using wavelength compared with the blue chip in the range of short-wave band
With using wavelength compared with the anti-blue light effect as the blue chip in the range of long-wave band, while avoid and using wavelength compared with long wave
It is the problem of LED light emitting device light emission luminance reduces, easy to utilize during blue chip in segment limit.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of LED light emitting device of the present invention；
Fig. 2 is exemplary spectrum contrast schematic diagram of the present invention；
Fig. 3 is peak value red shift contrast schematic diagram of the present invention；
Fig. 4 is the excitation spectrum schematic diagram of fluorescence transition material of the present invention；
Fig. 5 is the direct-light type LED backlight modular structure schematic diagram of the embodiment of the present invention 5；
Fig. 6 is the side entering-type LED backlight modular structure schematic diagram of the embodiment of the present invention 6.
Wherein：
100-LED luminescent devices, 101- stents, 102-LED blue chips, 103- fluorescence conversion layers, 104- cupulate bowls；
200- down straight aphototropism mode sets, 201- optical lenses, the first pcb boards of 202-, 203- backboards, 204- diffuser plates,
205- prismatic lens, 206- diffusion sheets；
300- side entrance back modules, the second pcb boards of 301-, 302- reflecting pieces, 303- light guide plates, 304- brightness enhancement films,
305- diffusion barriers.
Specific embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention will be described in detail.It should be noted that in the absence of conflict, presently filed embodiment and reality
Applying the feature in mode can be combined with each other.Many details are elaborated in the following description in order to fully understand this hair
Bright, described embodiment is only the embodiment of a part of embodiment of the present invention rather than whole.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Mode shall fall within the protection scope of the present invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
A kind of anti-blue light encapsulation LED light emitting device provided by the invention, including at least one LED blue chips, the LED
Fluorescence conversion layer is covered on blue chip, the fluorescence conversion layer includes white light conversion phosphor and thermosetting property colloid.The present invention
LED light emitting device compared with the LED light emitting device of the prior art, mainly improve and be, the fluorescence conversion layer further includes
Blue light of the energy absorption peak wavelength in 435-475nm wavelength bands makes the fluorescence transition material of the peak wavelength red shift of blue light.
As a preferred solution, weight percent of the fluorescence transition material in the fluorescence conversion layer is
2%-30%.The fluorescence transition material may be selected from one or more in LuAG, LuGaAG, GaYAG, γ-ALON.And institute
State fluorescence transition material has transmitting in 465-500nm wavelength bands, as shown in Figure 4.
Further, the absorption peak of the fluorescence transition material is in 410-445nm wavelength bands, absorption peak
Half-wave is wide to be less than 60nm.The fluorescence transition material will be less than the fluorescence in 455nm wavelength, to the absorbability of blue light and turn
Conversion materials absorb 20% during the peak-peak of blue light.The fluorescence transition material is in wavelength band of the wavelength more than 455nm
It is less than the wavelength band that wavelength is less than 455nm to the absorbability of blue light.
As a preferred solution, the thermosetting property colloid may be selected from one kind in silica gel, silicones or epoxy resin
It is or a variety of.
Technical scheme of the present invention is further described in detail with reference to specific embodiments and the drawings：
Embodiment 1
The present embodiment provides a kind of anti-blue lights to encapsulate LED light emitting device, by the LED blue light cores that a peak wavelength is 445nm
Piece and fluorescence conversion layer composition.The fluorescence conversion layer is made of white light conversion phosphor, fluorescence transition material and silica gel.
In the present embodiment, white light conversion phosphor is absorbed in the 500-600nm wavelength bands emitted by LED blue chips
Yellow light, the blue light and the yellow light of white light conversion phosphor transmitting of the transmitting of LED blue chips are mixed into white light.In order to reduce 400-
The harm of high energy shortwave blue light in 450nm wavelength bands avoids the simple content due to blue light from reducing, and leads to chromaticity coordinates
The range of backlight demand is offset out, so as to add in fluorescence transition material of the present invention, the fluorescence conversion in the present embodiment
Material is LuAG, and absorption peak wavelength is located at 430nm, to 455nm wavelength blue lights when being absorbed as maximum absorption peak
20%, and the wave band model of 455nm wavelength is less than to the absorbability for being more than the blue light in the wavelength band of 455nm wavelength
When enclosing.The half-wave width of the absorption peak of fluorescence transition material in the present embodiment be 60nm, emission peak 510nm, and
There is transmitting in 465-500nm wavelength bands.The weight percent of fluorescence transition material in the present embodiment is 10%.Pass through addition
Fluorescence transition material, the peak wavelength red shifts of LED blue chips 3nm.(0.27 ± 0.08,0.27 can be achieved in the present embodiment
± 0.08) backlight demand chromaticity coordinates.
Embodiment 2
The something in common in LED light emitting device, with embodiment 1 is encapsulated the present embodiment provides a kind of anti-blue light not repeat.
The peak wavelength of LED blue chips in the present embodiment is 455nm, and white light conversion phosphor is absorbed by LED blue lights
The green light and feux rouges of chip emission, the blue light of LED blue chips transmitting are mixed with the green light that white light conversion phosphor emits and feux rouges
Synthesize white light.Fluorescence transition material in the present embodiment is LuGaAG, and absorption peak wavelength is located at 410nm, to 455nm wavelength
15% when being absorbed as maximum absorption peak of blue light.The half-wave width of the absorption peak of fluorescence transition material in the present embodiment is
50nm, emission peak 500nm, and have transmitting in 465-500nm wavelength bands.Fluorescence transition material in the present embodiment
Weight percent be 20%.By adding in fluorescence transition material, the peak wavelength red shift of LED blue chips 5nm.
Embodiment 3
The something in common in LED light emitting device, with embodiment 1 is encapsulated the present embodiment provides a kind of anti-blue light not repeat.
The peak wavelength of LED blue chips in the present embodiment is 435nm, and white light conversion phosphor is absorbed by LED blue lights
The green light and feux rouges of chip emission, the blue light of LED blue chips transmitting are mixed with the green light that white light conversion phosphor emits and feux rouges
Synthesize white light.Fluorescence transition material in the present embodiment is GaYAG, and absorption peak wavelength is located at 430nm, to 455nm wavelength
5% when being absorbed as maximum absorption peak of blue light.The half-wave width of the absorption peak of fluorescence transition material in the present embodiment is
60nm, emission peak 520nm, and have transmitting in 465-500nm wavelength bands.Fluorescence transition material in the present embodiment
Weight percent is 2%.By adding in fluorescence transition material, the peak wavelength red shift of LED blue chips 1nm.
Embodiment 4
The something in common present embodiments provided in a kind of anti-blue light encapsulation LED light emitting device, with embodiment 1 is not gone to live in the household of one's in-laws on getting married
It states.
The peak wavelength of LED blue chips in the present embodiment is 475nm, and white light conversion phosphor is absorbed by LED blue lights
The green light and feux rouges of chip emission, the blue light of LED blue chips transmitting are mixed with the green light that white light conversion phosphor emits and feux rouges
Synthesize white light.Fluorescence transition material in the present embodiment is γ-ALON, and absorption peak wavelength is located at 430nm, to 455nm waves
15% when being absorbed as maximum absorption peak of long blue light.The half-wave of the absorption peak of fluorescence transition material in the present embodiment is wide
For 60nm, emission peak 521nm, and there is transmitting in 465-500nm wavelength bands.Fluorescence conversion material in the present embodiment
The weight percent of material is 30%.By adding in fluorescence transition material, the peak wavelength red shift of LED blue chips 5nm.
Blue light peak wavelength red shift is illustrated referring to Fig. 3, it is clear that according to embodiment 1-4, specific blue light peak wavelength
The wave band length of red shift is related with the fluorescence transition material of the present invention.Obtained LED light emitter in 1-4 of the embodiment of the present invention
Part, structure diagram can be found in Fig. 1, and LED light emitting device 100 shown in FIG. 1, there are one LED support 101, the branch for tool
Top of the trellis is recessed inwardly to form a cupulate bowl 104, and LED blue chips 102 are located at 104 bottom of cupulate bowl, and fluorescence conversion layer 103 is filled
In the cupulate bowl 104 and it is covered in the surface of 102 light-emitting surface of LED blue chips.Certainly, in practical applications, also exist and do not contain
The LED light emitting device of LED support, at this time those skilled in the art can according to actual needs and prepare have the characteristics that it is of the invention
The LED light emitting device of LED support is not contained, as long as being coated on the surface in its LED chip light extraction face has the characteristics that the present invention's
Fluorescence conversion layer.
Anti-blue light provided by the invention encapsulation LED light emitting device can be applied in LED backlight module, for example, straight-down negative or
The backlight module of side entering type.It is described further below by embodiment 5,6：
Embodiment 5
The present embodiment provides a kind of anti-blue light encapsulation LED down straight aphototropism mode sets 200, its structure of the backlight module 200 is adopted
It is this with the main difference of existing LED down straight aphototropism mode sets structure, and existing LED down straight aphototropism mode sets
Its LED light emitting device of backlight module encapsulates LED light emitting device using the anti-blue light that any one in embodiment 1-4 is provided
100.It is a kind of LED down straight aphototropism mode sets of anti-blue light encapsulation LED light emitting device 100 for employing embodiment 1 shown in Fig. 5
200.Backlight module 200 shown in fig. 5 its have the first pcb board 202, optical lens 201, diffuser plate 204, prismatic lens 205, expand
Discrete piece 206, backboard 203.LED light emitting device 100 is set on the first pcb board 202, and optical lens 201 is set on LED light emitting device
100 tops, the first pcb board 202 equipped with LED light emitting device 100 are fixedly arranged on 203 bottom of backboard, and diffuser plate 204 is set on backboard
203 tops, prismatic lens 205 are set on 204 upper surface of diffuser plate, and diffusion sheet 206 is set on 205 upper surface of prismatic lens.
Embodiment 6
The present embodiment provides a kind of anti-blue light encapsulation LED side entrance back modules 300, its structure of the backlight module 300 is adopted
It is this with the main difference of existing LED side entrance back modules structure, and existing LED side entrance back modules
Its LED light emitting device of backlight module encapsulates LED light emitting device using the anti-blue light that any one in embodiment 1-4 is provided
100.It is a kind of LED side entrance back modules of anti-blue light encapsulation LED light emitting device 100 for employing embodiment 1 shown in Fig. 6
300.Backlight module 300 shown in fig. 6 its with light guide plate 303, reflecting piece 302, brightness enhancement film 304, diffusion barrier 305.LED shines
100 and second pcb board 301 of device connects and set on 303 side of light guide plate, reflecting piece 302 and brightness enhancement film 304 are respectively arranged on leaded light
The lower surface and upper surface of plate 303, diffusion barrier 305 are set on 304 upper surface of brightness enhancement film.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, therefore
Every any modification that without departing from technical solution of the present invention content, technical spirit according to the present invention makees above example,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (9)
1. a kind of anti-blue light encapsulates LED light emitting device, including at least one LED blue chips, it is covered on the LED blue chips
Fluorescence conversion layer, the fluorescence conversion layer include white light conversion phosphor and thermosetting property colloid, which is characterized in that the fluorescence turns
It changes layer and further includes the fluorescence that blue light of the energy absorption peak wavelength in 435-475nm wavelength bands makes the peak wavelength red shift of blue light
Transition material.
2. a kind of anti-blue light encapsulation LED light emitting device according to claim 1, which is characterized in that the fluorescence converts material
It is 2%-30% to expect the weight percent in the fluorescence conversion layer.
3. a kind of anti-blue light encapsulation LED light emitting device according to claim 1, which is characterized in that the fluorescence converts material
Material has transmitting in 465-500nm wavelength bands.
4. LED light emitting device is encapsulated according to a kind of anti-blue light of claim 1-3 any one of them, which is characterized in that described glimmering
Light conversion material is one or more in LuAG, LuGaAG, GaYAG, γ-ALON.
5. LED light emitting device is encapsulated according to a kind of anti-blue light of claim 1-3 any one of them, which is characterized in that described glimmering
For the absorption peak of light conversion material in 410-445nm wavelength bands, the half-wave of absorption peak is wide to be less than 60nm.
6. a kind of anti-blue light encapsulation LED light emitting device according to claim 5, which is characterized in that the fluorescence converts material
Material in 455nm wavelength, to the absorbability of blue light will be less than the fluorescence transition material absorb blue light peak-peak when
20%.
7. a kind of anti-blue light encapsulation LED light emitting device according to claim 5, which is characterized in that the fluorescence converts material
Expect to be less than the absorbability of blue light in wavelength band of the wavelength more than 455nm wavelength less than the wavelength band in 455nm.
A kind of 8. anti-blue light encapsulation LED light emitting device according to claim 1, which is characterized in that the thermosetting property colloid
It is one or more in silica gel, silicones or epoxy resin.
9. a kind of anti-blue light encapsulates LED backlight module, including LED light emitting device, which is characterized in that the LED light emitting device is
Claim 1~8 any one of them anti-blue light encapsulates LED light emitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483855.4A CN108134003B (en) | 2017-12-29 | 2017-12-29 | Blue light-proof packaging LED light-emitting device and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483855.4A CN108134003B (en) | 2017-12-29 | 2017-12-29 | Blue light-proof packaging LED light-emitting device and backlight module thereof |
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| CN108134003A true CN108134003A (en) | 2018-06-08 |
| CN108134003B CN108134003B (en) | 2024-03-19 |
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| CN201711483855.4A Active CN108134003B (en) | 2017-12-29 | 2017-12-29 | Blue light-proof packaging LED light-emitting device and backlight module thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687716A (en) * | 2018-07-04 | 2020-01-14 | 深圳Tcl新技术有限公司 | Backlight module |
| CN112029335A (en) * | 2020-09-16 | 2020-12-04 | 贵溪市清亮照明科技有限公司 | Blue-light-removing coating for LED |
| CN112029380A (en) * | 2020-09-08 | 2020-12-04 | 贵溪市清亮照明科技有限公司 | Blue light removing coating |
| CN112038465A (en) * | 2020-09-08 | 2020-12-04 | 贵溪市清亮照明科技有限公司 | Remove blue light LED chip |
| CN112126209A (en) * | 2020-09-24 | 2020-12-25 | 贵溪市清亮照明科技有限公司 | Blue light removing photodiffusion material, photocureable coating and LED light source |
| CN114141140A (en) * | 2021-11-01 | 2022-03-04 | 深圳市高展光电有限公司 | Blue light prevention display screen assembly |
| US11513394B2 (en) | 2019-01-30 | 2022-11-29 | Chongqing Boe Optoelectronics Technology Co., Ltd. | Dual-die device, display device and driving method of display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110687716A (en) * | 2018-07-04 | 2020-01-14 | 深圳Tcl新技术有限公司 | Backlight module |
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| CN112029380A (en) * | 2020-09-08 | 2020-12-04 | 贵溪市清亮照明科技有限公司 | Blue light removing coating |
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| CN114141140A (en) * | 2021-11-01 | 2022-03-04 | 深圳市高展光电有限公司 | Blue light prevention display screen assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108134003B (en) | 2024-03-19 |
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