CN216387660U - Quantum dot dodging composite material - Google Patents
Quantum dot dodging composite material Download PDFInfo
- Publication number
- CN216387660U CN216387660U CN202122475464.6U CN202122475464U CN216387660U CN 216387660 U CN216387660 U CN 216387660U CN 202122475464 U CN202122475464 U CN 202122475464U CN 216387660 U CN216387660 U CN 216387660U
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- composite material
- dodging
- concave mirror
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a quantum dot dodging composite material which comprises a quantum dot substrate and a plurality of microstructures arranged on the quantum dot substrate, wherein each microstructure comprises a micro-lens structure and/or a concave mirror structure, each micro-lens structure comprises a concave structure and/or a convex structure, adjacent micro-lens structures are partially overlapped, and each concave mirror structure comprises a plurality of concave mirror bodies with set shapes. This application realizes the even effect of membrane through set up the microstructure on the quantum dot membrane, can reduce to use at least one deck even membrane in backlight unit to reduce whole backlight unit's thickness.
Description
Technical Field
The utility model relates to the technical field of backlight display, in particular to a quantum dot light homogenizing composite material.
Background
Most of the existing liquid crystal display devices in the market are backlight displays, which include a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. Since the liquid crystal panel does not emit light, the light source provided by the backlight module is needed to normally display the image. Therefore, the backlight module is one of the key components of the liquid crystal display. The backlight module comprises a light emitting diode array, at least two optical films positioned above the light emitting diode array and a pair of brightness enhancement films positioned above the at least two optical films. Since the original LED lamp emits substantially blue light, a quantum dot film is generally disposed in the backlight module. The quantum dot film can convert blue light into white light, has a spectrum conversion function, and can generate a red, green and blue light source with a sharp peak shape by combining with the blue light LED in a backlight module of the liquid crystal display screen, so that the color gamut of the liquid crystal display screen can be effectively improved.
Because the divergence angle of the light that single LED pointolite sent is limited for go out the plain noodles and appear regional energy around central zone energy is big, and the distance between the lamp pearl chip is more than 1cm, therefore array light that a plurality of LED chips are constituteed can make appear periodic light and shade region on the screen, and visual effect is relatively poor, influences user's experience and feels. The even membrane is covered above the exit surface of LED usually to the conventional art, realizes the diffusion and the mixed light of setting a light to it is even to realize the exit surface light-emitting, nevertheless because even membrane receives the restriction of its structure and thickness, often needs two at least even membranes just can satisfy even light requirement, and this is unfavorable for whole backlight unit's ultra-thin design.
Therefore, in combination with the above-mentioned technical problems, a new technical solution is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a quantum dot dodging composite material, which realizes the function and effect of dodging by arranging a microstructure on a quantum dot film (plate) and realizes an integrated material of the quantum dot film (plate) and the dodging film (plate).
In order to achieve the object of the present invention, the present invention provides a quantum dot dodging composite material, which includes a quantum dot substrate and a plurality of microstructures disposed on the quantum dot substrate, wherein the microstructures include micro lens structures and/or concave mirror structures, the micro lens structures include concave structures and/or convex structures, adjacent micro lens structures are partially overlapped, and the concave mirror structures include a plurality of concave mirror bodies having a predetermined shape.
Furthermore, the quantum dot substrate comprises a substrate layer and a quantum dot layer arranged on one side of the substrate layer, the microstructure is arranged on one side, far away from the substrate layer, of the quantum dot layer, and/or the microstructure is arranged on one side, far away from the quantum dot layer, of the substrate layer.
Furthermore, the quantum dot substrate comprises a substrate layer and a quantum dot material mixed in the substrate layer, and the microstructures are arranged on one side or two sides of the substrate layer.
Furthermore, the concave surface of the concave structure is a curved surface, and the convex surface of the convex structure is a curved surface.
Furthermore, the concave mirror body is in one or more of a prism shape, a pyramid shape or a cone shape, or is in a composite shape formed by one or more of the shapes according to a set rule.
Further, the thickness of the quantum dot substrate is not less than 0.1 mm.
Furthermore, the depth of the concave mirror body is 10-50 μm, and when the concave mirror body is conical, the included angle of the tip of the concave mirror body is 60-120 degrees.
Further, the size of the micro lens structure is 30-100 μm, and the depth or height of the micro lens structure is 15-50 μm; the overlapping range of two adjacent microlens structures is 5% -25%.
The quantum dot dodging composite material has at least one or more of the following beneficial effects:
(1) the quantum dot light-homogenizing composite material is internally provided with the quantum dot material, can convert blue light into white light, has a spectrum conversion function, can generate a red, green and blue light source with a sharp peak shape by combining with a blue light LED in a backlight module of a liquid crystal display screen, effectively improves the color gamut of the liquid crystal display screen, and is provided with a plurality of microstructures on two sides, so that a membrane has higher haze, and the diffusion effect of the quantum dot light-homogenizing composite material on light rays emitted by LED lamp beads can be effectively ensured;
(2) the quantum dot light-homogenizing composite material can reduce the use of at least one layer of light-homogenizing film in the backlight module, so that the thickness of the whole backlight module is reduced;
(3) the quantum dot dodging composite material is provided with the microstructures, so that the addition amount of diffusion particles can be reduced particularly when a thicker quantum dot dodging composite material is prepared, high haze can be ensured, high light transmittance can be realized, the requirement on LED power can be reduced, power consumption and heat dissipation are reduced, the service life of the quantum dot dodging composite material is prolonged, and the quantum dot dodging composite material is more environment-friendly;
(4) when the microstructure of the quantum dot light homogenizing composite material is a micro-lens structure, the micro-lens structures are partially overlapped, so that the duty ratio of the microstructure on the quantum dot light homogenizing composite material can reach 100%, and meanwhile, the positioning error of a laser head of a photoetching machine can be overcome;
(5) the utility model provides a quantum dot dodging combined material, when its micro-structure was the microlens structure, creative microlens structural design can guarantee when installing in backlight unit need not aim at, only need cut to suitable size according to certain put the angle installation can, improved backlight unit's packaging efficiency and equipment degree of difficulty greatly.
(6) The quantum dot dodging composite material can be placed at any angle between dodging sheets in the backlight module when the microstructure of the quantum dot dodging composite material is a conical concave mirror body, and orthogonal limitation does not exist.
Drawings
Fig. 1 is a schematic structural diagram of a quantum dot substrate according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another quantum dot substrate provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a quantum dot dodging composite material provided in an embodiment of the present application;
fig. 4a to fig. 4c are schematic partial arrangement diagrams of microlens structures of quantum dot dodging composite materials provided in an embodiment of the present application;
fig. 5 is a schematic partial cross-sectional structure view of a quantum dot dodging composite material provided in an embodiment of the present application;
fig. 6a and 6b are diagrams illustrating an effect of arrangement of a microlens structure of a quantum dot dodging composite material provided in an embodiment of the present application;
FIG. 7 is a schematic partial cross-sectional view of a quantum dot dodging composite material with errors according to an embodiment of the present application;
FIGS. 8a and 8b are graphs showing the arrangement effect of the microlens structure of the quantum dot dodging composite material in the presence of errors according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an apparatus for preparing a quantum dot dodging composite material according to an embodiment of the present application;
FIG. 10 is a schematic structural diagram of a quantum dot dodging composite material prepared by the apparatus shown in FIG. 9 according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of another apparatus for preparing a quantum dot dodging composite material according to an embodiment of the present application;
FIG. 12 is a schematic structural diagram of a quantum dot dodging composite material prepared by the apparatus shown in FIG. 11 according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a quantum dot dodging composite material provided in example two of the present application;
fig. 14 is a schematic structural diagram of a quantum dot dodging composite material provided in the third embodiment of the present application;
fig. 15 is a schematic structural diagram of a quantum dot dodging composite material provided in the fourth embodiment of the present application when a concave mirror is a triangular pyramid;
fig. 16 is a schematic structural diagram of a quantum dot dodging composite material provided in example four of the present application when a concave mirror body is a quadrangular pyramid;
FIG. 17 is a top view of the quantum dot dodging composite shown in FIG. 16;
fig. 18 is a schematic perspective view of a quantum dot dodging composite material provided in the fourth embodiment of the present application when a concave mirror body is conical;
FIG. 19 is a schematic view of a partial cross-sectional structure of the quantum dot dodging composite shown in FIG. 18;
fig. 20 is a schematic partial cross-sectional structure view of a quantum dot dodging composite material provided in example five of the present application.
The manufacturing method comprises the following steps of 1-quantum dot substrate, 11-substrate layer, 12-quantum dot layer, 121-quantum dot material, 13-microlens structure, 131-raised structure, 132-recessed structure, 14-concave mirror body, 2-boss-shaped structure, 3-recessed structure, 4-melt material, 5-mold roller, 6-rubber head, 7-extrusion roller, 8-guide roller and 9-ultraviolet lamp.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the utility model, the following detailed description is given to the specific embodiments, structures, features and effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.
Example one
The embodiment provides a quantum dot dodging composite material, which comprises a quantum dot substrate 1 and a plurality of microstructures arranged on one side or two sides of the quantum dot substrate 1.
The quantum dot substrate 1 may be a composite structure composed of a substrate layer 11 and a quantum dot layer 12, as shown in fig. 1, in which a quantum dot substrate 1 is schematically shown, and the quantum dot layer 12 is disposed on one side of the substrate layer 11. A microstructure is arranged on one side of the quantum dot layer 12 far away from the substrate layer 11. It should be noted that, when the thickness of the quantum dot light uniformizing composite material mentioned in this patent is relatively thin, for example, the thickness is less than 0.5mm, the composite material can be called a quantum dot light uniformizing film, and when the thickness is more than 0.5mm, the composite material can be called a quantum dot light uniformizing plate or a quantum dot light uniformizing sheet. The structure is more suitable for a thinner quantum dot light homogenizing composite material, namely a quantum dot light homogenizing film. As shown in fig. 2, another quantum dot substrate 1 is schematically shown, which is formed by mixing a material for preparing a substrate layer 11 and a quantum dot material 121. The quantum dot material 121 can be added into diffusion particles added in the substrate layer 11, and the structure is more suitable for a thicker quantum dot light homogenizing composite material, namely a quantum dot light homogenizing sheet or a quantum dot light homogenizing sheet.
In this embodiment, the microstructure is a microlens structure 13, and a plurality of microlens structures 13 are disposed on both sides of the quantum dot substrate 1. As shown in fig. 3, the microlens structure 13 is schematically shown as a circular recessed structure 132. The concave surface of the microlens structure 13 is preferably a curved surface. The plurality of microlens structures 13 are arranged in a plurality of rows, and the plurality of microlens structures 13 in two adjacent rows are arranged in a staggered manner, as shown in fig. 4a, or in a random manner, as shown in fig. 4b, or in an orthogonal manner, as shown in fig. 4 c. Two adjacent microlens structures 13 are partially overlapped with each other, as shown in fig. 4a to 4c and fig. 5. The overlap between adjacent microlens structures 13 is in the range of 5% -25%, preferably 10%. Partial overlapping design is adopted between the adjacent micro-lens structures 13, so that on one hand, the coverage range of the micro-lens structures 13 on the quantum dot dodging composite material can be effectively improved, and the duty ratio can reach 100 percent, as shown in fig. 6a and 6 b; on the other hand, the positioning error of the laser head of the photoetching machine can be overcome. As for a lithography machine in the current market, the achievable positioning accuracy is about 4um-5um, and when a lithography piece is subjected to lithography, a positioning error may cause a gap between pattern structures formed by lithography, so that a boss-shaped structure 2 or a recess-shaped structure 3 is formed, as shown in fig. 7, when a microlens structure 13 on a quantum dot dodging composite material is formed by imprinting or extrusion, a region without the microlens structure 13 on the quantum dot dodging composite material will be caused, as shown in fig. 8a and 8b, so that the diffusion effect of the quantum dot dodging composite material will be affected.
The diffusion effect of the quantum dot dodging composite material is related to the curvature radius and the size of the micro lens structure 13, and preferably, the size of the micro lens structure 13 is 30-100 μm, and the depth is 15-50 μm. It should be noted that the above range of the parameters related to the microlens structure 13 is only a preferable range of the present application, and in the implementation, the parameters related to the microlens structure 13 can be designed as required. The microlens structures 13 on the two sides of the quantum dot dodging composite material can be the same in size or different in size, and the microlens structures 13 on the two sides can be arranged in an aligned mode or in a staggered mode.
The thickness of the quantum dot substrate 1 is not less than 0.1mm, wherein the thicker the quantum dot substrate 1 is, the better the atomization effect of the quantum dot light homogenizing composite material is, and the thinner the quantum dot substrate 1 is, the higher the light transmittance of the quantum dot light homogenizing composite material is. The quantum dot dodging composite material is provided with the micro-lens structures 13 on two sides of the quantum dot substrate 1, so that the haze of the quantum dot dodging composite material can be guaranteed, and the light transmittance of the quantum dot dodging composite material can be improved. For example, when a thicker quantum dot dodging composite material (with a thickness greater than 0.5mm) is prepared, the diffusion particles are added into the material for preparing the quantum dot dodging composite material, meanwhile, the quantum dot material 121 is added into the diffusion particles, the haze of the quantum dot dodging composite material can be ensured by adding the diffusion particles, but the diffusion particles absorb light, and the light transmittance of the quantum dot dodging composite material is affected. The microlens structure 13 of the quantum dot light uniformizing composite material can reduce the addition amount of diffusion particles during production of a diaphragm, reduce the absorption degree of the diffusion particles to light, and greatly improve the light transmittance of the quantum dot light uniformizing composite material while ensuring the haze of the quantum dot light uniformizing composite material. The improvement of luminousness can reduce the demand to LED power to reduce the consumption and dispel the heat, prolong the life of LED lamp simultaneously, and environmental protection more to a certain extent.
It should be noted that the quantum dot dodging composite material described in the above embodiment is provided with the microlens structures 13 on both sides, but in practical implementation, the quantum dot dodging composite material of the present application may be provided with the microlens structures 13 on only one side.
The embodiment also provides a preparation process of the quantum dot dodging composite material, which specifically comprises the following steps:
step S1: and photoetching a plurality of pattern structures corresponding to the shapes of the micro lens structures 13 on one side of the photoetching piece, wherein the adjacent pattern structures are partially overlapped. The photoresist may be a glass substrate coated on one side with photoresist. And exposing the photoresist layer according to a required pattern, and forming a plurality of sunken pattern structures on the photoresist layer after developing. The photoetching piece can also be made of mirror surface metal materials, the metal materials can be stainless steel, nickel, copper and the like, and the required pattern structure is formed by directly carrying out photoetching on the surface of a metal base material through focusing a high-power pulse laser on a shaping light path.
Step S2: and transferring the obtained pattern structure on the photoetching object to a template by using a UV transfer printing technology or a metal growth technology to obtain the template with the pattern structure. In this embodiment, the pattern structure recessed on the photoresist is transferred to the surface of the template by UV transfer, so as to obtain a template having a pattern structure protruding on the surface. Or by electroforming to obtain a template with a pattern structure with protrusions on the surface by means of metal growth. Of course, the template with the protruding graphic structure on the surface can also be obtained by other methods, which is not illustrated here.
Step S3: and wrapping the template on a mold roller 5, and impressing or extruding a material for forming the quantum dot dodging composite material to obtain the quantum dot dodging composite material with the micro-lens structure 13 on the surface.
Among them, in step S3, if the quantum dot dodging composite material is thicker, it is preferable to integrally form the quantum dot dodging composite material by extrusion, which needs to be completed by extrusion equipment. The extrusion equipment comprises two die rollers 5 for extrusion, wherein the two die rollers 5 are arranged in parallel at intervals, and an extrusion flow channel is formed between the two die rollers. A template is wrapped around the exterior of each of the two mold rolls 5 with the pattern structure on the template facing outward, as shown in fig. 9. The material for forming the quantum dot dodging composite material comprises diffusion particles and a transparent organic high polymer material, and quantum dot materials 121 are added in the diffusion particles. The organic polymer material is any one of PET, PC, and PMMA, but is not limited thereto and is not listed here. The diffusion particles may be PET diffusion particles, PC diffusion particles, PMMA diffusion particles, or the like, and the diffusion particles are white diffusion particles or yellow diffusion particles, and preferably white diffusion particles, but the diffusion particles are not limited thereto and may be diffusion particles of other colors. The preparation method comprises the following specific steps:
step S311: providing diffusion particles and a transparent high polymer material, adding a quantum dot material 121 into the diffusion particles, mixing the diffusion particles added with the quantum dot material 121 with the transparent organic high polymer material, and melting to a melt state;
step S312: adding the melted melt material 4 into an extrusion runner of the extrusion equipment for extrusion molding, and adjusting the distance between two mold rollers 5 to obtain a quantum dot dodging composite material semi-finished product with corresponding thickness and uniformity;
step S313: and cooling and solidifying to obtain a finished product of the quantum dot dodging composite material with the microlens structure 13 on the surface, as shown in fig. 10. In this step, the cooling method may be a natural cooling method or may be cooling by a cooling roller, but is not limited thereto and may be another cooling method.
It should be noted that, if when preparing the quantum dot dodging composite material with the microlens structure on only one side, one of the two mold rollers 5 is not coated with the template or coated with the template without the pattern structure, so that the quantum dot dodging composite material prepared by the above process is the quantum dot dodging composite material with the microlens structure on one side.
The embodiment also provides another preparation method, and the method is more suitable for preparing thinner quantum dot dodging composite materials. The material used for forming the quantum dot dodging composite material adopted by the method comprises a substrate layer 11 and a quantum dot glue layer. As shown in fig. 11, the specific preparation steps are as follows:
step S321: providing a substrate layer 11; the substrate layer 11 may be any one of PET, PC, and PMMA, but is not limited thereto and is not listed here; the base material layer 11 may be a diffusion material in which diffusion particles are added.
Step S322: quantum dots are uniformly coated on the surface of the substrate layer 11. The quantum dots comprise quantum dots, diluents, film-forming agents and other auxiliary agents. The specific coating manner may be that quantum dots are coated on the surface of the substrate layer 11 through a glue head 6 as shown in fig. 11, and then the quantum dots are subjected to precuring by using an optional ultraviolet precuring device, so as to form a semisolid quantum dot glue layer on the surface of the substrate layer 11. The ultraviolet pre-curing device is, for example, a low-power ultraviolet lamp 9, which can make the originally liquid quantum dots become semisolid for convenient stamping.
Step S323: and (5) stamping the quantum dot glue layer by using a mold roller 5 with a pattern structure on the surface, wherein the manufacturing mode of the mold roller 5 is the same as that of the steps S1 to S3. During imprinting, the side, provided with the pattern structure, of the mold roller 5 is in close contact with the quantum dot dispensing layer through the extrusion roller 7, then the quantum dot dispensing pattern structure is formed before being stripped from the mold through irradiation of the ultraviolet lamp 9, and the pattern structure on the surface of the mold roller 5 is transferred to the surface of the substrate layer 11. Namely, a quantum dot layer with a microlens structure is formed on one surface of the substrate layer 11.
Step S324: through using guide roll 8 upset substrate layer 11 to evenly coating sensitization glue on the surface of the 11 another sides of substrate layer, with mould roller 5 with the substrate layer 11 laminating that has sensitization glue together, solidify the sensitization glue on the 11 surfaces of substrate layer, form on the surface of the 11 another sides of substrate layer and be solid-like optical cement layer, obtain the quantum dot base 1 that two-sided surface has microlens structure 13.
Step S325: the quantum dot glue layer printed with the micro-lens structures 13 is hardened and shaped by using a strong curing device and a cooling device, so that the quantum dot dodging composite material with the micro-lens structures 13 on the surface is obtained, as shown in fig. 12. The forced solidification device comprises at least one set of high-power ultraviolet lamp, and the cooling device can be an air cooling device or a water cooling device.
In the preparation method, the two sides of the prepared quantum dot dodging composite material are provided with the micro-lens structures 13, so that the quantum dot dodging composite material can be prepared by single-sided imprinting in sequence or simultaneous double-sided imprinting, and the imprinting principles of the two are basically consistent, which is not described herein.
It should be noted that, in the above two preparation methods, the mold roller 5 may be prepared by applying a template having a desired pattern structure on the surface thereof, or the desired pattern structure may be directly prepared on the surface of the mold roller 5, and the material of the template or the mold roller 5 may be nickel, steel, copper, or the like.
It should be noted that, when the above-mentioned thin quantum dot dodging composite material is prepared by the imprinting technique, the microlens structure may be imprinted on only one side of the quantum dot dodging composite material, that is, the step S325 may be directly performed after the step S323. Or directly coating photosensitive glue on one side of the finished quantum dot film (plate), and performing the imprinting and curing step in step S324.
When the microlens structures are imprinted on both sides of the quantum dot light uniformizing composite material, the order of applying the optical glue and the quantum glue in steps S323 and S324 may be changed as needed. In addition, when the microlens structures are imprinted on both sides of the quantum dot dodging composite material, the microlens structures may be directly imprinted on the substrate layer through a mold roller without coating optical glue in step S324.
The quantum dot dodging composite material has at least one or more of the following beneficial effects:
(1) the quantum dot light-homogenizing composite material is internally provided with the quantum dot material, can convert blue light into white light, has a spectrum conversion function, can generate a red, green and blue light source with a sharp peak shape by combining with a blue light LED in a backlight module of a liquid crystal display screen, effectively improves the color gamut of the liquid crystal display screen, and is provided with a plurality of microstructures on two sides, so that a membrane has higher haze, and the diffusion effect of the quantum dot light-homogenizing composite material on light rays emitted by LED lamp beads can be effectively ensured;
(2) the quantum dot light-homogenizing composite material can reduce the use of at least one layer of light-homogenizing film in the backlight module, so that the thickness of the whole backlight module is reduced;
(3) according to the quantum dot dodging composite material, the two sides are respectively provided with the microstructures, especially when the thicker quantum dot dodging composite material is prepared, the addition amount of diffusion particles can be reduced, high haze can be guaranteed, meanwhile, high light transmittance can be achieved, the requirement for LED power can be further reduced, and therefore power consumption and heat dissipation are reduced, the service life of the quantum dot dodging composite material is prolonged, and the quantum dot dodging composite material is more environment-friendly;
(4) when the microstructure of the quantum dot light homogenizing composite material is a micro-lens structure, the micro-lens structures are partially overlapped, so that the duty ratio of the microstructure on the quantum dot light homogenizing composite material can reach 100%, and meanwhile, the positioning error of a laser head of a photoetching machine can be overcome;
(5) the utility model provides a quantum dot dodging combined material, when its micro-structure was the microlens structure, creative microlens structural design can guarantee when installing in backlight unit need not aim at, only need cut to suitable size according to certain put the angle installation can, improved backlight unit's packaging efficiency and equipment degree of difficulty greatly.
Example two
The difference between the present embodiment and the first embodiment is that the microlens structure 13 on the quantum dot dodging composite material in the present embodiment is a circular convex structure 131. Fig. 13 shows a quantum dot dodging composite material with convex structures 131 on two sides and microlens structures 13. The convex surface of the microlens structure 13 is preferably a curved surface, and is convex and hemispherical on one side of the quantum dot substrate 1. Of course, the microlens structure 13 of the quantum dot dodging composite material having the microlens structure 13 on one side may also be the convex structure 131. The preparation method of the quantum dot dodging composite material in this embodiment is the same as that in the first embodiment, and details are not described here.
EXAMPLE III
The difference between this embodiment and the first and second embodiments is that the microlens structure 13 on one side of the quantum dot dodging composite material in this embodiment is a circular convex structure 131, and the microlens structure 13 on the other side is a circular concave structure 132, as shown in fig. 14. The preparation method of the quantum dot dodging composite material in this embodiment is the same as that in the first embodiment, and details are not described here.
Example four
The difference between this embodiment and the first, second, and third embodiments is that one side of the quantum dot dodging composite material in this embodiment is the microlens structure 13, and the other side is the concave mirror structure. It should be noted that the microlens structure 13 in the present embodiment may be a convex structure 131 having a hemispherical shape, or may be a concave structure 132 having a hemispherical shape.
The concave mirror structure can be a concave mirror body 14 with any shape of prism, pyramid and cone, and can also be a composite shape formed by combining one or more concave mirror bodies 14 with the shapes in a certain way. When the concave mirror bodies 14 are in a prism shape (such as a triangular prism) or a semi-cylinder shape, the concave mirror bodies 14 are arranged in parallel and continuously on one side of the quantum dot substrate 1, the axial direction is parallel to the setting surface, and the bottom edges of two adjacent concave mirror bodies 14 intersect. When the concave mirror bodies 14 are pyramids, for example, inverted triangular pyramids as shown in fig. 15, or inverted rectangular pyramids as shown in fig. 16, the concave mirror bodies 14 are arranged in series, the bottom sides of two adjacent concave mirror bodies 14 intersect, and the two intersecting bottom sides coincide with the intersecting line, as shown in fig. 17. Of course, the concave mirror body 14 may also have other pyramid shapes, which are basically the same and will not be described herein again. When the concave mirror bodies 14 are cones, as shown in fig. 18 to 19, the bottom parts of the concave mirror bodies 14 are overlapped, and the coverage range of the concave mirror bodies 14 on the quantum dot light uniformizing composite material can be increased like the micro lens structure 13, and the duty ratio can reach 100%. The concave mirror body 14 has a size of the order of micrometers, and preferably the height of the concave mirror body 14 is 30 μm. When the concave mirror body 14 is conical, the included angle of the tip is preferably 60-120 degrees. The microlens structure 13 and the concave mirror structure are respectively arranged on the two sides of the quantum substrate of the quantum dot light uniformizing composite material, so that the haze of the quantum dot light uniformizing composite material can be guaranteed, and the light transmittance of the quantum dot light uniformizing composite material can be improved.
The preparation method of the quantum dot dodging composite material in this embodiment is the same as that in the first embodiment, and details are not described here. It should be noted, however, that when preparing the press roll for pressing the concave mirror body 14, the lithography member may also adopt engraving techniques other than lithography techniques, for example, when the concave mirror body 14 is a rectangular pyramid or a prism, the lithography member may be obtained by turning a corresponding shape on a substrate made of a metal material. When the microstructure of the quantum dot light-homogenizing composite material is the conical concave mirror body 14, the quantum dot light-homogenizing composite material can be placed at any angle with a light-homogenizing sheet in a backlight module, and orthogonal limitation does not exist.
EXAMPLE five
The difference between this embodiment and the fourth embodiment is that both sides of the quantum dot dodging composite material in this embodiment are concave mirror structures, as shown in fig. 20. The shape and the preparation process of the concave mirror body 14 and the preparation process of the quantum dot dodging composite material are substantially the same as those in the fourth embodiment, and are not described herein again.
EXAMPLE six
The difference between the present embodiment and the fourth embodiment is that only one side of the quantum dot dodging composite material in the present embodiment has a microstructure, and the microstructure is a concave mirror structure. The shape and the preparation process of the concave mirror body 14 and the preparation process of the quantum dot light uniformizing composite material are basically the same as those of the quantum dot light uniformizing composite material with the microstructure arranged on the single side in the fourth embodiment, and are not described again here.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The quantum dot dodging composite material is characterized by comprising a quantum dot substrate and a plurality of microstructures arranged on the quantum dot substrate, wherein each microstructure comprises a micro lens structure and/or a concave mirror structure, each micro lens structure comprises a concave structure and/or a convex structure, the adjacent micro lens structures are partially overlapped, and each concave mirror structure comprises a plurality of concave mirror bodies with set shapes.
2. The quantum dot dodging composite material as claimed in claim 1, wherein the quantum dot substrate comprises a substrate layer and a quantum dot layer disposed on one side of the substrate layer, the microstructure is disposed on one side of the quantum dot layer away from the substrate layer, and/or the microstructure is disposed on one side of the substrate layer away from the quantum dot layer.
3. The quantum dot dodging composite material of claim 1, wherein the quantum dot substrate comprises a substrate layer and a quantum dot material mixed in the substrate layer, and the microstructures are disposed on one or both sides of the substrate layer.
4. The quantum dot dodging composite material according to claim 1, wherein the concave surface of the concave structure is a curved surface, and the convex surface of the convex structure is a curved surface.
5. The quantum dot dodging composite material according to claim 1, wherein the concave mirror body is one or more of a prism shape, a pyramid shape or a cone shape, or is a composite shape formed by one or more of the shapes according to a set rule.
6. The quantum dot dodging composite material of claim 1, wherein the thickness of the quantum dot substrate is not less than 0.1 mm.
7. The quantum dot dodging composite material according to claim 5, wherein the depth of the concave mirror body is 10-50 μm, and when the concave mirror body is conical, the included angle of the tip end of the concave mirror body is 60-120 degrees.
8. The quantum dot dodging composite material of claim 1, wherein said microlens structure has a size of 30 μm to 100 μm, and a depth or height of said microlens structure is 15 μm to 50 μm;
the overlapping range of two adjacent microlens structures is 5% -25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122475464.6U CN216387660U (en) | 2021-10-14 | 2021-10-14 | Quantum dot dodging composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122475464.6U CN216387660U (en) | 2021-10-14 | 2021-10-14 | Quantum dot dodging composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216387660U true CN216387660U (en) | 2022-04-26 |
Family
ID=81245213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122475464.6U Active CN216387660U (en) | 2021-10-14 | 2021-10-14 | Quantum dot dodging composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216387660U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114637144A (en) * | 2022-04-27 | 2022-06-17 | 重庆翰博显示科技研发中心有限公司 | High-brightness light homogenizing film and ultrathin backlight module |
| WO2023060799A1 (en) * | 2021-10-14 | 2023-04-20 | 苏州大学 | Quantum dot light-homogenizing composite material and preparation process therefor |
-
2021
- 2021-10-14 CN CN202122475464.6U patent/CN216387660U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023060799A1 (en) * | 2021-10-14 | 2023-04-20 | 苏州大学 | Quantum dot light-homogenizing composite material and preparation process therefor |
| CN114637144A (en) * | 2022-04-27 | 2022-06-17 | 重庆翰博显示科技研发中心有限公司 | High-brightness light homogenizing film and ultrathin backlight module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113156550A (en) | Mini LED light homogenizing sheet, preparation process thereof and backlight module | |
| CN216387660U (en) | Quantum dot dodging composite material | |
| WO2022193824A1 (en) | Mini led diffuser, preparation process therefor, and backlighting module | |
| CN113009605A (en) | Mini LED micro-lens light-homogenizing sheet, preparation process thereof and backlight module | |
| CN113985650A (en) | Quantum dot dodging composite material and preparation process thereof | |
| CN215729185U (en) | Mini LED light homogenizing sheet and backlight module | |
| KR100658162B1 (en) | Manufacturing method of hybrid microlens and it's application to Light Guide Plate | |
| CN101216573A (en) | Combined light guide board and preparation method | |
| JP2008052940A (en) | Light guide plate and its manufacturing method, and back light unit using its light guide plate | |
| CN104175580B (en) | Transfer printing equipment and manufacturing method of light guide film | |
| KR100976808B1 (en) | A Method of Manufacturing a Light Guide Plate using roll to roll process | |
| CN101169496A (en) | Method for manufacturing composite film | |
| CN108445577A (en) | A kind of uniform light extraction light guide plate and preparation method thereof | |
| CN215678833U (en) | Mini LED micro-lens light homogenizing sheet and backlight module | |
| CN215728917U (en) | Mini LED diffusion sheet and backlight module | |
| JP2006019243A (en) | Light guide plate and manufacturing method of the same | |
| KR101447479B1 (en) | Manufacturing Method of Light Guide Sheet with Luminance Controlling pattern for Display | |
| JP5648075B2 (en) | Method for manufacturing shape transfer resin sheet and resin sheet | |
| CN216162989U (en) | Texture panel and household electrical appliance | |
| CN113075853B (en) | Projection film and projection apparatus | |
| CN214027233U (en) | Word shell printer platform and 3D word shell printer | |
| JP5310268B2 (en) | Optical sheet, backlight unit and display device | |
| TW201341897A (en) | Manufacturing method of mold core components for light guide plate and application thereof | |
| CN209514106U (en) | A kind of lenticule brightness enhancement film | |
| US20090186152A1 (en) | Light Guide Plate and Manufacturing Method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |