阅读说明：本技术 一种高均匀的量子点多功能光学复合板 (High-uniformity quantum dot multifunctional optical composite board ) 是由 庄兴潮 于 2019-11-21 设计创作，主要内容包括：本发明提供一种高均匀的量子点多功能光学复合板,包括扩散基层、设置在扩散基层下表面的第一量子点层,以及设置在扩散基层上表面的第二量子点层,所述第一量子点层包括红量子点层及绿量子点层,所述第二量子点层采用多次涂布依次沉积在所述扩散基层的上表面。本发明从结构、原材料、及配方等方面进行改进,不但具有很高的光扩散性以及出射光均匀性,而且制品出射光效显得更白、更亮、更鲜艳。(The invention provides a high-uniformity quantum dot multifunctional optical composite plate which comprises a diffusion base layer, a first quantum dot layer and a second quantum dot layer, wherein the first quantum dot layer is arranged on the lower surface of the diffusion base layer, the second quantum dot layer is arranged on the upper surface of the diffusion base layer, the first quantum dot layer comprises a red quantum dot layer and a green quantum dot layer, and the second quantum dot layer is sequentially deposited on the upper surface of the diffusion base layer through multiple coating. The invention improves the structure, raw materials, formula and the like, not only has high light diffusivity and emergent light uniformity, but also has the effect of making the emergent light of the product appear whiter, brighter and more vivid.)

1. The utility model provides a multi-functional optics composite sheet of high even quantum dot which characterized in that: including diffusion basic unit, set up the first quantum dot layer at diffusion basic unit lower surface to and set up the second quantum dot layer at diffusion basic unit upper surface, wherein:

the diffusion base layer comprises a GPPS main material matrix and functional auxiliary agent particles which are uniformly distributed in the GPPS main material matrix;

the first quantum dot layer comprises a red quantum dot layer and a green quantum dot layer, the red quantum dot layer comprises an A viscose base body and quantum dot red powder particles which are uniformly distributed and dissolved in the A viscose base body, the green quantum dot layer comprises a B viscose base body and quantum dot green powder particles which are uniformly distributed and dissolved in the B viscose base body, the red quantum dot layer is coated on the lower surface of the diffusion base layer by adopting a coating process, and the green quantum dot layer is coated on the lower surface of the red quantum dot layer by adopting a coating process;

the second quantum dot layer comprises a C viscose base body and a plurality of different quantum dot particles which are uniformly distributed and dissolved in the C viscose base body, the quantum dot particles are formed by mixing quantum dot red powder particles and quantum dot green powder particles, and the second quantum dot layer is sequentially deposited on the upper surface of the diffusion base layer by multiple coating.

2. The multifunctional optical composite plate with high uniformity of quantum dots according to claim 1, wherein: the GPPS main material matrix is composed of GPPS main materials, the functional auxiliary agent particles are formed by mixing two or three or more of light diffusant, abrasive agent, dispersing agent, antioxidant, lubricant, filler, heat-resistant auxiliary agent or rigid auxiliary agent, the mass ratio of the GPPS main materials in the diffusion base layer is 75-85%, and the mass ratio of the functional auxiliary agent particles is 25-15%.

3. The multifunctional optical composite plate with high uniformity of quantum dots according to claim 2, wherein: and the diffusion base layer is prepared by the GPPS main material matrix and the functional assistant particles according to the material component ratio, and the uniformly mixed materials are extruded and molded through uniform mixing.

4. The high-uniformity quantum dot multifunctional optical composite plate according to claim 1 or 2, wherein: the quantum dot red powder particles are nano fluorescent particles made of semiconductor materials, the particle size of the quantum dot red powder particles is 2-6 nm, and the quantum dot red powder particles are one or a combination of any two or three of CdSe, CuInS2 and CuInSe 2.

5. The high-uniformity quantum dot multifunctional optical composite plate according to claim 1 or 2, wherein: the quantum dot green powder particles are nano fluorescent particles made of semiconductor materials, the particle size of the quantum dot green powder particles is 2-6 nm, and the quantum dot green powder particles are one or a combination of any two or three of CdSe, CuInS2 and CuInSe 2.

6. The multifunctional optical composite plate with high uniformity of quantum dots according to claim 1, wherein: the shape of the quantum dot red powder particles and the quantum dot green powder particles is one of regular shapes such as spheres, discs and the like.

7. The multifunctional optical composite plate with high uniformity of quantum dots according to any one of claims 1 to 6, wherein: the A viscose matrix is prepared from a glue A component 1: and the glue B comprises the following components: polishing oil: n-butyl acetate = 44.5: 2.94: 50: 15.2, and the like, wherein the A viscose matrix is solidified and shaped in a thermosetting or UV (ultraviolet) photocuring mode; the adhesive base body B is prepared from an adhesive A component 2: and the glue B comprises the following components: polishing oil: n-butyl acetate = 46.2: 5.35: 50: 15.2, and the like, wherein the adhesive base B is solidified and shaped in a thermosetting or UV (ultraviolet) photocuring mode; the adhesive base body C is prepared from an adhesive A component 1: glue A component 2: and the glue B comprises the following components: polishing oil: n-butyl acetate = 44.5: 46.2: 8.29: 100: 30.4, and the like, and the C viscose base body is solidified and shaped in a thermosetting or UV photocuring mode.

8. The multifunctional optical composite plate with high uniformity of quantum dots according to claim 1, wherein: the thickness range of the diffusion base layer is 0.5-1.5 mm; the thickness range of the first quantum dot layer is 0.3-0.5 mm; the thickness range of the second quantum dot layer is 0.1-0.3 mm.

Technical Field

The invention belongs to the field of photoelectric materials, and particularly relates to a high-uniformity quantum dot multifunctional optical composite plate for a backlight display device.

Background

The diffusion plate is characterized in that the diffusion plate utilizes the physical phenomena of refraction, reflection and scattering when light meets two media with different refractive indexes in the traveling path by a chemical or physical means, inorganic or organic light diffusant is added into the base materials such as PMMA, PC, PS, PP and the like, or the light is artificially adjusted through the array arrangement of micro-feature structures on the surface of the base materials, so that the light is refracted, reflected and scattered in different directions, the traveling path of the light is changed, the effect of optical diffusion is generated by filling and dispersing colors of incident light, and the diffusion plate is widely applied to liquid crystal display, LED illumination and imaging display systems. Its main function is to make the incident light fully scatter, and realize softer, more even irradiation effect.

Quantum dots are nanoscale crystals composed of semiconductor materials. Compared with fluorescent particles, the quantum dot nano material has many advantages, such as that quantum dots can generate denser light in a narrower wavelength band, have high stability, have excellent fluorescence emission property in a visible light region, have continuous distribution of an excitation spectrum, and have the position of a fluorescence peak which can be regulated and controlled along with the physical size of the fluorescence peak. However, the backlight source scheme of the current blue light source and quantum dot technology has certain defects, and needs a common diffusion plate matched with a quantum dot film to realize the backlight source scheme; the quantum dot film has complex process, high requirement, low capacity, difficult post-processing and high overall cost in the production process. According to the backlight source scheme, red and green quantum dots are excited by blue light and are mixed with the blue light to form white light, but the reflectivity of a reflector plate in the backlight module to the blue light with short wavelength is low, so that the backlight source brightness of a liquid crystal display device using the backlight source is reduced by 40% -50% compared with that of a common white light LED with the same backlight power consumption and an optical film framework, the display brightness of the liquid crystal display device can be reduced by more than 20%, and the power consumption of the backlight source scheme of the existing quantum dot technology can be relatively higher if the same display brightness is achieved.

Disclosure of Invention

The invention aims to provide a high-uniformity quantum dot multifunctional optical composite plate, which is improved from the aspects of structure, raw materials, formula and the like, not only has very high light diffusivity and emergent light uniformity of a common diffusion plate, but also is a product with whiter, brighter and more bright emergent light effect and without using a quantum dot membrane; not only reducing the processing procedures and improving the production capacity, but also greatly reducing the manufacturing cost.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the utility model provides a high even multi-functional optics composite sheet of quantum dot, includes diffusion basic unit, sets up the first quantum dot layer at diffusion basic unit lower surface to and set up the second quantum dot layer at diffusion basic unit upper surface, wherein:

the diffusion base layer comprises a GPPS main material matrix and functional auxiliary agent particles which are uniformly distributed in the GPPS main material matrix;

the first quantum dot layer comprises a red quantum dot layer and a green quantum dot layer, the red quantum dot layer comprises an A viscose base body and quantum dot red powder particles which are uniformly distributed and dissolved in the A viscose base body, the green quantum dot layer comprises a B viscose base body and quantum dot green powder particles which are uniformly distributed and dissolved in the B viscose base body, the red quantum dot layer is coated on the lower surface of the diffusion base layer by adopting a coating process, and the green quantum dot layer is coated on the lower surface of the red quantum dot layer by adopting a coating process;

the second quantum dot layer comprises a C viscose base body and a plurality of different quantum dot particles which are uniformly distributed and dissolved in the C viscose base body, the quantum dot particles are formed by mixing quantum dot red powder particles and quantum dot green powder particles, and the second quantum dot layer is sequentially deposited on the upper surface of the diffusion base layer by multiple coating.

Furthermore, the GPPS main material matrix is composed of a GPPS main material, the functional auxiliary agent particles are formed by mixing two or three or more of light diffusant, abrasive agent, dispersing agent, antioxidant, lubricant, filler, heat-resistant auxiliary agent or rigid auxiliary agent, the mass of the GPPS main material in the diffusion base layer accounts for 75-85%, and the mass of the functional auxiliary agent particles accounts for 25-15%.

And further, the diffusion base layer is prepared by the GPPS main material matrix and the functional assistant particles according to the material component ratio, and the uniformly mixed materials are extruded and molded through uniform mixing.

Furthermore, the quantum dot red powder particles are nano fluorescent particles made of semiconductor materials, the particle size of the quantum dot red powder particles is 2-6 nm, and the quantum dot red powder particles are one or a combination of any two or three of CdSe, CuInS2 and CuInSe 2.

Furthermore, the quantum dot green powder particles are nano fluorescent particles made of semiconductor materials, the particle size of the quantum dot green powder particles is 2-6 nm, and the quantum dot green powder particles are one or a combination of any two or three of CdSe, CuInS2 and CuInSe 2.

Further, the shape of the quantum dot red powder particles and the quantum dot green powder particles is one of regular shapes such as spheres and discs.

Further, the A adhesive matrix is prepared from a glue A component 1: and the glue B comprises the following components: polishing oil: n-butyl acetate = 44.5: 2.94: 50: 15.2, and the like, wherein the A viscose matrix is solidified and shaped in a thermosetting or UV (ultraviolet) photocuring mode; the adhesive base body B is prepared from an adhesive A component 2: and the glue B comprises the following components: polishing oil: n-butyl acetate = 46.2: 5.35: 50: 15.2, and the like, wherein the adhesive base B is solidified and shaped in a thermosetting or UV (ultraviolet) photocuring mode; the adhesive base body C is prepared from an adhesive A component 1: glue A component 2: and the glue B comprises the following components: polishing oil: n-butyl acetate = 44.5: 46.2: 8.29: 100: 30.4, and the like, and the C viscose base body is solidified and shaped in a thermosetting or UV photocuring mode.

Further, the thickness range of the diffusion base layer is 0.5-1.5 mm; the thickness range of the first quantum dot layer is 0.3-0.5 mm; the thickness range of the second quantum dot layer is 0.1-0.3 mm.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the invention coats the first quantum dot layer fused with quantum dot red powder/green powder particles on the lower surface of the diffusion base layer, coats the second quantum dot layer fused with quantum dot red powder/green powder particle mixture on the upper surface of the diffusion base layer, and can absorb and convert incident blue light due to the quantum dot particles in the quantum dot layer, so that more visible light with the wavelength of 360-475 nm than the original incident light can be reflected, and the light diffusion plate product is whiter, brighter and more brilliant; meanwhile, white light rays are emitted from the light emitting surface, the chromatic aberration is small, the chromatic aberration problem of a visible area is effectively solved, and the color gamut uniformity of the backlight module is high;

2. the invention takes GPPS as a main material matrix, and functional auxiliary agent particles such as a light diffusant, a dispersing agent, an antioxidant and the like are uniformly dissolved to prepare the quantum dot multifunctional optical composite board with high brightness and high uniformity, and the quantum dot multifunctional optical composite board is improved in the aspects of structure, raw materials, formula and the like, so that the quantum dot multifunctional optical composite board not only has high light diffusivity and emergent light uniformity, but also has the effect of enabling the emergent light of the product to be whiter, brighter and more vivid;

3. the components in the multifunctional composite board prepared by the invention can be uniformly distributed in the board, so that when an incident blue light source passes through the multifunctional composite board, the effects of refraction, reflection, scattering and conversion are generated when the incident blue light source meets various particles, and further, light can uniformly penetrate through the multifunctional composite board without exposing the light source, thereby achieving the change from a point light source to a surface light source.

Drawings

Fig. 1 is a schematic structural diagram of a highly uniform quantum dot multifunctional optical composite plate according to the present invention.

Fig. 2 is a graph of the r.g.b peak spectrum of a conventional diffuser plate in combination with a quantum dot film.

Fig. 3 is a graph of the r.g.b peak spectrum of the multifunctional optical composite plate of example 5 in the present invention.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, a highly uniform multifunctional optical composite plate with quantum dots comprises a diffusion base layer 1, a first quantum dot layer 2 disposed on the lower surface of the diffusion base layer 1, and a second quantum dot layer 3 disposed on the upper surface of the diffusion base layer 1, wherein:

the diffusion base layer 1 comprises a GPPS main material matrix 11 and functional auxiliary agent particles 12 which are uniformly distributed and dissolved in the GPPS main material matrix 11;

the first quantum dot layer 2 comprises a red quantum dot layer 21 and a green quantum dot layer 22, the red quantum dot layer comprises an A viscose base body 211 and quantum dot red powder particles 4 which are uniformly distributed and dissolved in the A viscose base body 211, the green quantum dot layer 22 comprises a B viscose base body 221 and quantum dot green powder particles 5 which are uniformly distributed and dissolved in the B viscose base body 221, the red quantum dot layer 21 is coated on the lower surface of the diffusion base layer 1 by adopting a coating process, and the green quantum dot layer 22 is coated on the lower surface of the red quantum dot layer 21 by adopting a coating process;

the second quantum dot layer 3 comprises a C viscose matrix 31 and a plurality of different quantum dot particles which are uniformly distributed and dissolved in the C viscose matrix 31, the quantum dot particles are formed by mixing quantum dot red powder particles 4 and quantum dot green powder particles 5, and the second quantum dot layer 3 is sequentially deposited on the upper surface of the diffusion base layer 1 by multiple coating.

The GPPS main material matrix 11 is composed of a GPPS main material, the functional auxiliary agent particles 12 are formed by mixing two or three or more of a light diffusant, a frosting agent, a dispersing agent, an antioxidant, a lubricant, a filling agent, a heat-resistant auxiliary agent or a rigid auxiliary agent, the mass of the GPPS main material in the diffusion base layer 1 accounts for 75-85%, and the mass of the functional auxiliary agent particles 12 accounts for 25-15%.

The GPPS main material matrix 11 and the functional assistant particles 12 are prepared by the diffusion base layer 1 according to the material component ratio, and the uniformly mixed materials are extruded and molded through uniform mixing.

The quantum dot red powder particles 4 are nano fluorescent particles made of semiconductor materials, the particle size of the quantum dot red powder particles 4 is 2-6 nm, and the quantum dot red powder particles 4 are one or a combination of any two or three of CdSe, CuInS2 and CuInSe 2.

The quantum dot green powder particles 5 are nano fluorescent particles made of semiconductor materials, the particle size of the quantum dot green powder particles 5 is 2-6 nm, and the quantum dot green powder particles 5 are one or a combination of any two or three of CdSe, CuInS2 and CuInSe 2.

The shapes of the quantum dot red powder particles 4 and the quantum dot green powder particles 5 are one of regular shapes such as spheres, discs and the like.

The A adhesive matrix 211 is prepared from a glue A component 1: and the glue B comprises the following components: polishing oil: n-butyl acetate = 44.5: 2.94: 50: 15.2, and the like, wherein the A adhesive matrix 211 is solidified and shaped in a thermosetting or UV (ultraviolet) light curing mode; the adhesive B substrate 221 is prepared from an adhesive A component 2: and the glue B comprises the following components: polishing oil: n-butyl acetate = 46.2: 5.35: 50: 15.2, and the like, wherein the B adhesive 221 matrix is solidified and shaped in a thermosetting or UV photocuring mode; the C adhesive base 31 is prepared from a glue A component 1: glue A component 2: and the glue B comprises the following components: polishing oil: n-butyl acetate = 44.5: 46.2: 8.29: 100: 30.4, etc., and the C adhesive matrix 31 is solidified and shaped in a thermosetting or UV light curing mode.

The thickness range of the diffusion base layer 1 is 0.5-1.5 mm; the thickness range of the first quantum dot layer 2 is 0.3-0.5 mm; the thickness range of the second quantum dot layer 3 is 0.1-0.3 mm.

For better understanding of the technical solution of the present invention, the components of the functional assistant particles 12 mentioned in the above-mentioned scheme can be selected from: the light diffusant can be selected from PMMA, KMP-590, X-52-7056A and other organic light diffusants, and is mainly used for realizing light diffusion and refraction; the frosting agent is a high-luminous-flux frosting agent and mainly acts on the diffusion and refraction of light and the brightness increase; the dispersing agent is 5040 which is mainly used for realizing uniform diffusion of light; the antioxidant comprises a heat-resistant oxidant and an ultraviolet-resistant oxidant, wherein the heat-resistant oxidant is silicone, and the ultraviolet-resistant oxidant is 1010 (pentaerythritol phenylpropionate); the lubricant is EBS wax (vinyl bis stearamide) which is mainly used for dispersing and lubricating materials; the filler is zinc white (zinc oxide) which is mainly used for increasing the haze of the product; the heat-resistant auxiliary agent is one or a mixture of RHA-ZR (zirconium phosphate) and auxiliary agent 290 (Plastolyn 290), and mainly acts on increasing the heat resistance of the product; the rigidity auxiliary agent is Mitsubishi yang MF001, and is mainly used for increasing the stiffness and rigidity of the product.