CN211264020U - Prevent blue light eyeshield optical function board - Google Patents
Prevent blue light eyeshield optical function board Download PDFInfo
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- CN211264020U CN211264020U CN201921255947.1U CN201921255947U CN211264020U CN 211264020 U CN211264020 U CN 211264020U CN 201921255947 U CN201921255947 U CN 201921255947U CN 211264020 U CN211264020 U CN 211264020U
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Abstract
The utility model provides a prevent blue light eyeshield optical function board, including functional layer, barrier layer and diffusion barrier layer are located the both sides of functional layer respectively, the functional layer include main part layer and quantum dot, quantum dot extrude through the twin-screw and mix and even distribution in with the plastic particle in the main part in situ, the barrier layer surface be provided with first microstructure, diffusion barrier layer surface be provided with the second microstructure, functional layer, barrier layer, diffusion barrier layer, first microstructure and second microstructure make through crowded altogether and roller pressfitting in the equipment mould respectively. The blue-light-proof eye-protecting optical function plate realizes the conversion of harmful short-wave blue light into long-wave blue light, so as to avoid the harm of the harmful blue light to human eyes and realize the function of eye protection; the yellow light of the fluorescent powder is not influenced by the quantum dots, so that the integral display color is not obviously influenced.
Description
Technical Field
The utility model relates to a liquid crystal display technology field, concretely relates to prevent blue light eyeshield optical function board.
Background
In the white paper published in 5.6.2016, the myopia rate of primary school is up to 46%, and in these years, the high-speed increase of myopia patients obviously has a direct relationship with the increasing dependence of people on the screen, especially the influence of blue light in the screen on eyes causes great harm to teenagers and children during development. Experiments show that: the shorter the wavelength of blue light, the higher the energy and the stronger the penetrating power, and the glaring is usually the blue light with the wavelength of 400-500nm and the higher frequency band. The wavelength of harmful blue light is concentrated at 450nm, and thus blue light prevention becomes necessary in the increasingly heavy screen dependence.
Various blue light filtering software on the market utilizes a method for debugging color temperature, and although blue light is greatly inhibited by the blue light filtering method, the displayed color is obviously yellow, so that the appearance experience is greatly influenced. How to filter harmful blue light without influencing the color and the image quality of a screen is a difficult problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The main objective of the utility model is to provide a prevent blue light eyeshield optical function board to solve the problem that proposes in the above-mentioned background art.
In order to realize the above-mentioned purpose, the utility model provides a prevent blue light eyeshield optical function board, including functional layer, barrier layer and diffusion barrier layer are located the both sides of functional layer respectively, the functional layer include main part layer and quantum dot, quantum dot extrude through the twin-screw and mix and even distribution in with the plastic particle in the main part in situ, the barrier layer surface be provided with first microstructure, diffusion barrier layer surface be provided with the second microstructure, functional layer, barrier layer, diffusion barrier layer, first microstructure and second microstructure make through crowded and roller pressfitting altogether in the equipment mould respectively.
Furthermore, a quantum dot protective layer is arranged on the surface of the quantum dot, so that the quantum dot is subjected to monodispersion protection and is tightly coated, and the quantum dot subjected to coating protection is uniformly dispersed in the main body layer.
Further, the cross sections of the first microstructure and the second microstructure are both frosted structures, or prism, triangular pyramid and tetrahedral polyhedral structures.
Furthermore, the quantum dot protective layer is made of an inorganic material or a hydrophobic and oxygen-insulating high polymer material.
Furthermore, the quantum dots are short-wave blue-green fluorescent quantum dots, and the emission peak is located near 460-480 nm.
Furthermore, the quantum dots are mixed fluorescent materials of the short-wave blue-green quantum dots and the red quantum dots according to a certain proportion, the emission peak of the short-wave blue-green fluorescent quantum dots is located near 460-480 nm, and the emission peak of the red quantum dots is located near 620-640 nm.
The utility model provides a prevent blue light optical function board, one, through shortwave blue-green quantum dot through the twin-screw extrusion with plastic particle high temperature under the mixture, again through extrusion moulding preparation obtain an eyeshield function panel to reduce the injury of display device blue light to the human body, realize the function of eyeshield; secondly, through diffusion barrier layer and barrier layer, can prevent the erosion to functional material such as steam and oxygen to guarantee the stability of functional layer, and the microstructure that diffusion barrier layer and barrier layer surface set up can increase the homogeneity of panel to the shielding nature of lamp shadow and picture, reduces and shows the colour difference, promotes the visual effect.
Drawings
Fig. 1 is a schematic structural view of an optical functional plate for blue light prevention and eye protection according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an optical functional plate for blue light prevention and eye protection according to another embodiment of the present invention.
Description of reference numerals:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is also changed accordingly, and the connection may be a direct connection or an indirect connection.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, this prevent blue light eyeshield optical function board, including functional layer 1, barrier layer 2 and diffusion barrier layer 3 are located functional layer 1's both sides respectively, functional layer 1 include main part layer 6 and quantum dot 7, quantum dot 7 extrude and mix and evenly distribute in with plastic particle through the twin-screw in main part layer 6.
Furthermore, the quantum dot protective layer 8 is arranged on the surface of the quantum dot 7, so that the quantum dot is subjected to monodispersion protection, the quantum dot 7 is tightly coated, and the quantum dot 7 subjected to coating protection is uniformly dispersed in the main body layer 6, so that the quantum dot 7 is fixed and protected, the coated quantum dot 7 also has excellent stability in high-temperature high-humidity and illumination environments, and the service life of the blue-light-preventing eye-protecting optical function plate is ensured.
In this embodiment, the quantum dot protection layer 8 is an inorganic material or a hydrophobic and oxygen-insulating polymer material. Dissolving inorganic material or hydrophobic polymer material in organic solvent, stirring, dispersing and mixing, meanwhile, the quantum dots 7 are dispersed in an organic solvent, the organic solvent mixed with the quantum dots 7 is dripped into a system in which an inorganic material or a hydrophobic high polymer material is positioned at a constant speed, so that the inorganic material or the hydrophobic high polymer material can uniformly and completely form a quantum dot protective layer 8 on the surface of each quantum dot 7, the quantum dots 7 coated in the quantum dot protective layer 8 are obtained by evaporating the organic solvent or performing high-speed centrifugal separation, the uncoated quantum dots on the surface of the quantum dot protective layer 8 are removed by washing with partial solvent, so as to prevent the quantum dots 7 from being damaged by water, oxygen and the like and avoid the defects of agglomeration, film blockage, uneven distribution and the like of the quantum dots 7 in the main body layer 6 when the quantum dots 7 are mixed with the melt material of the main body layer 6. The inorganic material may be zinc sulfide, zinc oxide, silicon dioxide, aluminum oxide or silicon carbide, and the hydrophobic polymer material may be polystyrene microsphere or polymethyl methacrylate microsphere.
Furthermore, the quantum dots 7 can be short-wave blue-green fluorescent quantum dots, and the emission peak of the short-wave blue-green fluorescent quantum dots is positioned near 460-480 nm; quantum dot 7 also can be the mixed fluorescent material of shortwave blue-green quantum dot and red quantum dot according to certain ratio, and shortwave blue-green fluorescence quantum dot emission peak is located near 460 ~ 480nm, and red quantum dot emission peak is located near 620 ~ 640nm to adjust the colour coordinate and the colour temperature deviation problem that pure shortwave blue-green eyeshield panel exists. The emitted light emitted by the quantum dots 7 uniformly distributed in the functional layer 1 is uniformly distributed in the functional layer 1, so that the quantum dots 7 emit colored emitted light, and the colored emitted light is uniformly refracted from the main body layer to avoid the existence of color difference of each part of the display screen and improve the saturation of each part of the display screen.
The present embodiment both avoids harmful blue light and hardly affects the display of blue light by improving from the "blue light spectrum shift" approach.
The quantum dot material has the outstanding characteristics of narrow half-peak width, adjustable color, high quantum yield and the like, and after the quantum dot is subjected to light or electric stimulation, the frequency or color of emitted light is determined by the type, size and shape of the quantum dot, so that the parameters such as particle size and the like can be adjusted by controlling synthesis conditions, and the quantum dot fluorescence spectrum can be accurately tuned in the whole visible light region. Be different from the blue light mode of being shaded of quantum dot display technology, in order effectively to avoid harmful blue light, adopt the quantum dot preparation that the emission peak is located near 460 ~ 480nm to obtain and prevent blue light eyeshield diaphragm or eyeshield panel, need not to change backlight unit's white light mode in a poor light when using this eyeshield function material, white light LED transfers white light through blue light LED chip and phosphor powder, behind the eyeshield material, the blue light that the LED chip sent can arouse low wavelength quantum dot material to emit 460 ~ 480 nm's light, realize the conversion of harmful shortwave blue light to long wave blue light, in order to avoid harmful blue light to the injury of people's eye, and the yellow light of phosphor powder can not receive the influence of this kind of quantum dot, thereby holistic display color can not receive obvious influence.
Alternatively, the plastic particles used in the main layer 6 are typically polymers or copolymers such as polymethyl methacrylate (PMMA), Polystyrene (PS), Polycarbonate (PC), methyl methacrylate-styrene copolymer (MS), polyethylene terephthalate (PET), polypropylene (PP), and the like.
Furthermore, the surface of the barrier layer 2 is provided with a first microstructure 4, and the surface of the diffusion barrier layer 3 is provided with a second microstructure 5. The cross sections of the first microstructures 4 and the second microstructures 5 are frosted structures, or prismatic, triangular pyramid, tetrahedron or other polyhedral structures, so that the shielding property and the light emitting uniformity of the light incident surface are improved, and the brightness of the emitted light of the quantum dots 7 after being refracted by the main body layer 6 is improved.
In another embodiment, referring to fig. 2, the functional layer 1 is connected to the diffusion barrier layer 3 through the barrier layer 2, so that substances such as water and oxygen, which may damage the functional layer 1, are prevented from directly contacting the functional layer 1, thereby ensuring the stability of the functional layer 1, and reducing the thickness of the functional layer 1 to a certain extent, thereby saving the production cost. Functional layer 1, barrier layer 2, diffusion barrier layer 3, first microstructure 4 and second microstructure 5 are through crowded altogether and roller pressfitting in many extruder equipment moulds respectively to make the multilayer structure function board that has the function of putting blue light eye-care, quantum dot 7 homodisperse is in functional layer 1, thereby has overcome the defect in the aspect of traditional panel functional layer light-emitting property is inhomogeneous.
According to the blue light prevention eye protection function plate, short-wave blue-green quantum dots are extruded by the double screws and mixed with plastic particles at high temperature, and then the mixture is extruded and molded to obtain an eye protection function plate, so that the damage of blue light of display equipment to a human body is reduced, and an eye protection function is realized; the first microstructure and the second microstructure arranged on the diffusion barrier layer and the surface of the barrier layer can increase the shielding property of the plate to lamp shadows and the uniformity of pictures, improve the brightness of the quantum dot after light refraction, reduce display chromatic aberration, improve saturation, enhance the blue light prevention and eye protection functions and improve visual effect; through barrier layer and diffusion barrier layer, can prevent erosion to eyeshield functional material such as steam and oxygen to guarantee the stability of functional layer, and through increasing the quantum dot protective layer, further prevent that materials such as water and oxygen are direct to be contacted with the quantum dot, guarantee display effect's stability.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (6)
1. The utility model provides a prevent blue light eyeshield optical function board, its characterized in that includes functional layer, barrier layer and diffusion barrier layer are located the both sides of functional layer respectively, the functional layer include main part layer and quantum dot, the barrier layer surface be provided with first microstructure, diffusion barrier layer surface be provided with the second microstructure, functional layer, barrier layer, diffusion barrier layer, first microstructure and second microstructure make through equipment mould co-extrusion and roller pressfitting in the mould respectively.
2. The optical functional plate for preventing blue light and protecting eye according to claim 1, wherein the quantum dots are provided with a quantum dot protection layer on the surface thereof, so as to perform monodispersion protection on the quantum dots, and perform close coating on the quantum dots, so that the quantum dots subjected to coating protection are uniformly dispersed in the host layer.
3. The optical functional plate for preventing blue light and eye protection of claim 1, wherein the cross section of the first microstructure and the cross section of the second microstructure are both frosted structures, or prism, triangular pyramid and tetrahedron polyhedral structures.
4. The optical functional plate for preventing blue light and protecting eyes of claim 2, wherein the quantum dot protective layer is made of inorganic material or hydrophobic and oxygen-insulating polymer material.
5. The optical functional plate for preventing blue light and protecting eyes of claim 1, wherein the quantum dots are short-wave blue-green fluorescent quantum dots, and the emission peak is near 460-480 nm.
6. The optical function plate for preventing blue light and protecting eyes of claim 1 or 5, wherein the quantum dots are short-wave blue-green quantum dots and red quantum dots, the emission peak of the short-wave blue-green fluorescence quantum dots is near 460-480 nm, and the emission peak of the red quantum dots is near 620-640 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921255947.1U CN211264020U (en) | 2019-08-05 | 2019-08-05 | Prevent blue light eyeshield optical function board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921255947.1U CN211264020U (en) | 2019-08-05 | 2019-08-05 | Prevent blue light eyeshield optical function board |
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| Publication Number | Publication Date |
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| CN211264020U true CN211264020U (en) | 2020-08-14 |
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| CN201921255947.1U Active CN211264020U (en) | 2019-08-05 | 2019-08-05 | Prevent blue light eyeshield optical function board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114005922A (en) * | 2021-10-09 | 2022-02-01 | 惠州视维新技术有限公司 | Quantum dot light-emitting system and display device |
| CN114755861A (en) * | 2022-06-15 | 2022-07-15 | 广东欧迪明光电科技股份有限公司 | High-efficiency quantum dot optical substrate and preparation method thereof |
-
2019
- 2019-08-05 CN CN201921255947.1U patent/CN211264020U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114005922A (en) * | 2021-10-09 | 2022-02-01 | 惠州视维新技术有限公司 | Quantum dot light-emitting system and display device |
| CN114755861A (en) * | 2022-06-15 | 2022-07-15 | 广东欧迪明光电科技股份有限公司 | High-efficiency quantum dot optical substrate and preparation method thereof |
| CN114755861B (en) * | 2022-06-15 | 2023-01-06 | 广东欧迪明光电科技股份有限公司 | High-efficiency quantum dot optical substrate and preparation method thereof |
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Effective date of registration: 20240110 Address after: No. 158, Huanghe Road, Rudong Economic Development Zone, Nantong City, Jiangsu Province, 226400 Patentee after: NANTONG CHUANGYIDA NEW MATERIAL CO.,LTD. Address before: 516006 1-2 / F, building B, No. 113 factory building, Xikeng Industrial Zone, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee before: HUIZHOU CHUANGYIDA NEW MATERIAL CO.,LTD. |