CN113782660A - Multifunctional optical material structure - Google Patents
Multifunctional optical material structure Download PDFInfo
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- CN113782660A CN113782660A CN202111062847.9A CN202111062847A CN113782660A CN 113782660 A CN113782660 A CN 113782660A CN 202111062847 A CN202111062847 A CN 202111062847A CN 113782660 A CN113782660 A CN 113782660A
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- 239000000463 material Substances 0.000 title claims abstract description 30
- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 39
- 238000005282 brightening Methods 0.000 claims abstract description 14
- 239000002096 quantum dot Substances 0.000 claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 239000001307 helium Substances 0.000 claims abstract description 4
- 229910052734 helium Inorganic materials 0.000 claims abstract description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000002952 polymeric resin Substances 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 239000004088 foaming agent Substances 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims description 6
- 230000002087 whitening effect Effects 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910052681 coesite Inorganic materials 0.000 abstract description 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 229910052682 stishovite Inorganic materials 0.000 abstract description 2
- 229910052905 tridymite Inorganic materials 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 93
- 239000010408 film Substances 0.000 description 13
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- 239000012528 membrane Substances 0.000 description 3
- 229920006254 polymer film Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
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- 230000007480 spreading Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
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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
-
- 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
- H01L33/44—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 coatings, e.g. passivation layer or anti-reflective coating
-
- 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
- H01L33/44—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 coatings, e.g. passivation layer or anti-reflective coating
- H01L33/46—Reflective coating, e.g. dielectric Bragg reflector
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of optics, and discloses a multifunctional optical material structure, which solves the problem of low light-emitting efficiency of a high-color backlight module adopting quantum dot materials in the current market, and simultaneously utilizes a foaming material to replace originally added dispersing agents such as SiO2, TiO2 and ZnO, so as to solve the problems of poor light divergence and product deformation caused by material weight extension, wherein the multifunctional optical material structure is a laminated structure and comprises an LED wavelength brightening layer 100, a unidirectional stretching film 200, a wavelength transfer layer 300 and a light diffusion layer 400, the LED wavelength brightening layer is arranged at the bottom layer of the structure, the unidirectional stretching film is arranged at the upper layer of the LED wavelength brightening layer, the wavelength transfer layer is arranged at the upper layer of the unidirectional stretching film, the light diffusion layer is arranged at the top layer of the structure, the light diffusion layer comprises air foaming particles, the air foaming particles comprise carbon dioxide, nitrogen, helium and the like, and each frame of the structure has density release characteristics, the invention has the advantages of increasing the light transmission efficiency of the quantum diffusion plate, reducing the weight and increasing the light divergence.
Description
Technical Field
The invention belongs to the technical field of optics, and particularly relates to a multifunctional optical material structure.
Background
Adopt quantum dot LED backlight unit in the existing market, can increase because of the concentration of quantum dot, make light-emitting efficiency reduce, thereby lead to the luminous flux efficiency of display to step down, in order to reach certain light, then need use more powerful LED lamp, the consumption of increase electric energy that will be great like this, and can increase LED's calorific capacity, thereby the result of use of reduction LED lamp that will be great, for can be under the condition that does not increase LED power, promote display luminous flux efficiency, we have proposed a multi-functional optical material structure.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention provides a multifunctional optical material structure, which effectively solves the problem of low light extraction efficiency caused by adopting quantum dot materials as high-color backlight modules in the current market, and simultaneously utilizes a foaming material to replace originally added dispersing agents such as SiO2, TiO2 and ZnO, so as to solve the problems of poor light divergence and product deformation caused by material weight extension.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a multifunctional optical material structure, includes LED wavelength brightening layer, unidirectional stretching membrane, wavelength transfer layer and light diffusion layer, LED wavelength brightening layer is in this structure bottom, the unidirectional stretching membrane is located LED wavelength brightening layer upper strata, the wavelength transfer layer is in unidirectional stretching membrane upper strata, the light diffusion layer is located this structure top layer, the light diffusion layer is density release layer, including the air foaming particle in the density release layer, the air foaming particle includes carbon dioxide, nitrogen gas, helium.
Preferably, the LED wavelength-enhancing layer comprises a high-transmittance blue polymer resin layer and a surface light-gathering structure, the structure of the high-transmittance blue polymer resin layer is generally a geometric optical structure, and a micron-sized foaming agent is added in the high-transmittance blue polymer resin layer.
Preferably, the uniaxially stretched film may be vacuum-coated on the surface to form a filter allowing a single wavelength to pass therethrough.
Preferably, the wavelength-transfer layer has a gaussian tosx wavelength-shift characteristic.
Preferably, the light diffusion layer is a light flux and hue control layer, and a micron-sized whitening agent and a foaming agent are added into the light diffusion layer.
Preferably, the upper and lower structures of the light diffusion layer may be perpendicular to or inclined at an offset angle of five degrees or more.
Compared with the prior art, the invention has the beneficial effects that:
in operation, blue light in the wavelength range of 400-475 nm is generated by passing a white light LED through an LED wavelength brightening layer (high-transmittance blue polymer resin layer), the surface of the high-transmittance blue polymer resin layer is provided with a light condensing structure which can increase luminous flux efficiency and can compensate loss absorbed by quantum dot materials, when light waves reach a wavelength transfer layer, the quantum dot materials have high Stokes wavelength shift characteristics, namely photoluminescence characteristics, light with three wavelengths of RGB is generated and can be continuously transmitted, when the light is transmitted to a light diffusion layer, a brightening agent increases the utilization rate of quantum dots, so that the light color can be transferred from blue to intermediate color of yellow or red and green, a foaming agent is filled and substituted for the light diffusion agent, the density and the weight of the whole material are reduced, and the upper structure and the lower structure of the light diffusion layer can be vertically or obliquely arranged at a shift angle of more than five degrees, and under the total reflection principle of the refraction law of the re-light, the light is led from the dense medium to the sparse medium, and when the angle of the reflected light is larger than the critical angle, the light can be reflected back to the dense medium, namely, the light is reflected back to the first wavelength transfer layer and the light diffusion layer, so that the light source is recycled, and the effect of improving the light extraction efficiency of the light diffusion layer is achieved.
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 specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 2 is a schematic view of a light diffusion layer according to the present invention when the structure thereof is changed;
FIG. 3 is a schematic view of a first structure of the uniaxially stretched polymer film of the present invention;
FIG. 4 is a schematic view of a second structure of the uniaxially stretched polymer film of the present invention;
FIG. 5 is a schematic diagram of a transverse, longitudinal, and + -45 degree angle structure of the light-emitting surface structure of the present invention;
fig. 6 is a schematic diagram of the lateral structure of the present invention.
FIG. 7 is a schematic view of a first structure of the light spreading layer perpendicular to the LED wavelength increment layer according to the present invention.
FIG. 8 is a schematic view of the angle structure of the light diffusion layer parallel to the LED wavelength increment layer according to the present invention.
FIG. 9 is a schematic view of a third structure of the uniaxially stretched polymer film of the present invention.
FIG. 10 is a schematic view of a second structure of the light spreading layer perpendicular to the LED wavelength increment layer angle according to the present invention;
FIG. 11 is a schematic structural view showing a 45 degree angle between the light diffusion layer and the LED wavelength increment layer according to the present invention.
FIG. 12 is a schematic structural diagram of the structure angle difference between the light diffusion layer and the LED wavelength increment interlayer of the present invention is θ >5 °.
In the figure: 100. an LED wavelength brightening layer; 200. stretching the film in a single direction; 300. a wavelength transfer layer; 400. a light diffusion layer; 500. a quantum dot layer or a fluorescent layer; 110. a surface light-gathering structure; 111. a high-transmittance blue polymer resin layer; 112. micron-sized foaming agent.
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.
Example one, given by FIGS. 1-12, the present invention includes an LED wavelength brightness enhancing layer 100, a uniaxially stretched film 200, a wavelength-transfer layer 300, and a light diffusing layer 400. The LED wavelength brightness enhancement layer 100 is positioned at the bottom layer, the unidirectional stretching film 200 is positioned at the upper layer of the LED wavelength brightness enhancement layer 100, the wavelength transfer layer 300 is positioned at the upper layer of the unidirectional stretching film 200, the light diffusion layer 400 is positioned at the top layer, the light diffusion layer 400 is a density release layer, the density release layer comprises air foaming particles, and the air foaming particles comprise carbon dioxide, nitrogen, helium and the like.
The LED wavelength brightening layer uses acrylic resin, passes through a specific structure pressing wheel to form a certain surface structure, when light passes through a structural layer, the light can be refracted to enter a first layer, therefore, large-angle emitted light of an LED passes through the structural layer and can be refracted to enter the first layer, incident light energy can be obtained more easily than the incident light energy which is not manufactured with the structural layer originally, the LED wavelength brightening layer is called an LED light wavelength brightening layer, a unidirectional stretching film is adopted, a unidirectional stretching process PET or PMMA material is adopted, the PET is a base material generally used for optical films at present, (in a PMMA film material test), but the PET is generally bidirectional stretching, and a long molecular state is not adopted.
In the second embodiment, based on the first embodiment, the LED wavelength-enhancing layer 100 includes a blue-high polymer resin layer, which is generally a geometric optical structure, and white LEDs passing through the LED wavelength-enhancing layer 100 will generate blue light in the wavelength range from four white to four hundred and seventy five nanometers.
In the third embodiment, on the basis of the first embodiment, the uniaxially stretched film 200 uses a surface light-gathering structure, and the light-gathering structure used by the uniaxially stretched film 200 meets the light increasing benefit to compensate for the loss of absorption of the PET material.
In the fourth embodiment, based on the first embodiment, the wavelength-shift layer 300 has a gaussian tosse wavelength-shift characteristic, and when the light reaches the wavelength-shift layer 300, the light with three wavelengths of RGB is generated due to the gaussian tosse wavelength-shift characteristic, i.e., the so-called light-emitting characteristic.
In the fifth embodiment, on the basis of the first embodiment, the light diffusion layer 400 is a light flux and hue control layer, a micron-sized whitening agent and a foaming agent are added into the light diffusion layer 400, when light reaches the light diffusion layer 400, the whitening agent causes the concentration of quantum dots to be increased, so that the light color is transferred from blue to an intermediate color of yellow or red and green, and the foaming agent is filled and substituted for the light diffusion agent, so that the density and weight of the whole material are reduced, and the product cannot be deformed due to heating in a high-temperature environment.
Sixth embodiment, on the basis of the first embodiment, the upper and lower structures of the light diffusion layer 400 can be vertically or obliquely inclined by an offset angle of more than five degrees, because of the total reflection principle of the law of refraction of light, light passes from the dense medium to the sparse medium, and when the angle of reflected light is greater than the critical angle, light is reflected back to the dense medium, that is, to the first wavelength conversion layer 300 and the light diffusion layer 400, so as to form a light source for reuse, thereby improving the light extraction efficiency of the light diffusion layer 400.
Also included is a polymeric uniaxially stretched film 500 positioned in two places, one with a quantum dot layer or phosphor layer 500 between the LED wavelength brightness enhancing layer 1 and the uniaxially stretched film 200, and the other with a quantum dot layer or phosphor layer 500 between the wavelength shifting layer 300 and the uniaxially stretched film 200.
The working principle is as follows: when the LED works, the white light LED passes through the LED wavelength brightening layer 1, blue light in the wavelength range of four white to four hundred seventy five nanometers is generated, the light condensing structure used by the one-way stretching film 200 can compensate the loss of quantum dot material absorption when meeting the light increasing benefit, when light waves reach the wavelength transfer layer 300, light with three wavelengths of RGB can be generated due to the Gauss-Thox wavelength shift characteristic, namely the so-called light emitting characteristic, the light can be continuously transmitted, when the light is transmitted to the light diffusion layer 400, the concentration of quantum dots is improved due to the whitening agent, the light color can be transferred from blue to intermediate color of yellow or red and green, the foaming agent is filled and used for replacing the light diffusion agent, the density and the weight of the whole material are reduced, because the upper and lower structures of the light diffusion layer 400 can be vertically or obliquely arranged at a shift angle of more than five degrees, and under the total reflection principle of the refraction law of the light, when the angle of the reflected light is larger than the critical angle, the light will be reflected back to the dense medium, i.e. the first wavelength conversion layer 300 and the light diffusion layer 400, to form a light source for reuse, so as to improve the light extraction efficiency of the light diffusion layer 400.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A multifunctional optical material structure comprising an LED wavelength brightness enhancing layer (100), a uniaxially stretched film (200), a wavelength-transfer layer (300), and a light diffusing layer (400), characterized in that: the LED wavelength brightness enhancement layer (100) is positioned at the bottom of the structure, the unidirectional stretching film (200) is positioned on the upper layer of the LED wavelength brightness enhancement layer (100), the wavelength transfer layer (300) is positioned on the upper layer of the unidirectional stretching film (200), the light diffusion layer (400) is positioned on the top layer of the structure, the light diffusion layer (400) is a density release layer, the density release layer comprises air foaming particles, and the air foaming particles comprise carbon dioxide, nitrogen and helium.
2. The multifunctional optical material structure of claim 1, wherein: the LED wavelength brightening layer (100) comprises a high-transmittance blue polymer resin layer, and the structure of the high-transmittance blue polymer resin layer is a geometric optical structure.
3. The multifunctional optical material structure of claim 1, wherein: the uniaxially stretched film (200) uses a surface light-concentrating structure.
4. The multifunctional optical material structure of claim 1, wherein: the wavelength transfer layer (300) has a high Stokes wavelength shift characteristic and is made of fluorescent powder or quantum dots.
5. The multifunctional optical material structure of claim 1, wherein: the light diffusion layer (400) is a luminous flux and hue control layer, and a micron-sized whitening agent and a foaming agent are added into the light diffusion layer (400).
6. The multifunctional optical material structure of claim 1, wherein: the upper and lower structures of the light diffusion layer (400) can be vertical or inclined by an offset angle of more than five degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062847.9A CN113782660A (en) | 2021-09-10 | 2021-09-10 | Multifunctional optical material structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062847.9A CN113782660A (en) | 2021-09-10 | 2021-09-10 | Multifunctional optical material structure |
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| CN113782660A true CN113782660A (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114371523A (en) * | 2022-01-13 | 2022-04-19 | 广州捷智科技有限公司 | Foamed quantum dot composite diffusion plate and preparation process thereof |
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2021
- 2021-09-10 CN CN202111062847.9A patent/CN113782660A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114371523A (en) * | 2022-01-13 | 2022-04-19 | 广州捷智科技有限公司 | Foamed quantum dot composite diffusion plate and preparation process thereof |
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