CN113568222A - Optical function board and device - Google Patents
Optical function board and device Download PDFInfo
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- CN113568222A CN113568222A CN202111012540.8A CN202111012540A CN113568222A CN 113568222 A CN113568222 A CN 113568222A CN 202111012540 A CN202111012540 A CN 202111012540A CN 113568222 A CN113568222 A CN 113568222A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The scheme discloses an optical function board which is composed of five layers of structures connected in sequence and comprises a structure layer, a first light homogenizing layer, a light emitting layer, a second light homogenizing layer and a light entering layer. Co-extruding and composite forming in an extruder die. The structural layer is a prism structure; the light homogenizing layer is made of polystyrene and foamed particles as main materials, the light emitting layer is prepared by blending red and green quantum dot materials and polystyrene in proportion, and the light incident layer is prepared by mixing a diffusant and polystyrene. The functional board has the multiple functional characteristics of high brightness, high color gamut, light homogenization, high shielding effect, light weight, high processing efficiency and the like, and can be widely applied to backlight and illumination products.
Description
Technical Field
The present invention relates to the field of backlight and lighting technologies, and in particular, to an optical function board and a device including the same.
Background
The traditional direct type backlight of the LED is the mainstream backlight scheme of the liquid crystal display at present, mainly comprises a lighting module and a display backlight module, has lower cost, but has thicker integral size and higher energy consumption, is generally applied to large-size display scenes which generally have common requirements on picture quality, and most brands are products which are gradually transited from outdoor LED display and large-space LEDs to small-space products. Compared with the current mainstream display technology LCD, the mini LED has a better display effect, is mainly used for positioning a high-end small-spacing LED market, has higher resolution ratio, improves the response speed by orders of magnitude, is lighter and thinner on a screen, greatly reduces the power consumption, and can be used as a backlight source to be applied to products such as large-size display screens, smart phones, automobile panels, electronic competition notebooks and the like.
The color filter collocated in the mainstream LCD display equipment has poor color mixing effect, and the color gamut finally presented has poor saturation, so that the color gamut presenting capability is still insufficient, and the color gamut range is only 65 percent of the NTSC standard
-75%. The high-color-gamut display equipment can present richer and more gorgeous colors, the color gamut coverage rate can reach 100% -120%, the real color feeling of a user is greatly improved, and the professional requirements of the user are better met.
Disclosure of Invention
An object of the present invention is to provide an optical function board, which can be applied to backlight and lighting products.
Another object of the present invention is to provide a device comprising the above optical function plate.
In order to achieve the purpose, the scheme is as follows:
an optical function plate is composed of five layers of structures which are connected in sequence and comprises a structure layer, a first light homogenizing layer, a light emitting layer, a second light homogenizing layer and a light entering layer.
Preferably, the total thickness of the optical function plate is 0.3-3.0 mm, and the transmittance of the optical function plate is 25% -60%.
Preferably, the structural layer includes a plurality of protruding structures arranged in an array.
Preferably, the protruding structure is a prism structure, a circular structure or a polyhedral structure, and the prism vertex angle of the prism structure is greater than or equal to 90 degrees.
Preferably, the first light-homogenizing layer and the second light-homogenizing layer are made of polystyrene and foamed particles as main materials, and the foamed particles are foamed at high temperature to form a first light-homogenizing structure and a second light-homogenizing structure; the first light-equalizing structure is formed in the first light-equalizing layer, and the second light-equalizing structure is formed in the second light-equalizing layer.
Preferably, the average density of the first light-homogenizing structure distributed in the first light-homogenizing layer is greater than or equal to 400/mm3The major axis size of the first light-homogenizing structure is distributed at 20～100μm。
Preferably, the average density of the second light-homogenizing structure distributed in the second light-homogenizing layer is more than or equal to 200/mm3And the long axis size of the second light equalizing structure is distributed in a range of 50-150 mu m.
Preferably, the light-emitting layer is prepared by blending a quantum dot material and polystyrene according to the mass ratio of 1-1000: 150000, the quantum dot material is a red quantum dot material and a green quantum dot material, the quantum dot material comprises cadmium selenide core-shell type and has the chemical formula of APbX3The perovskite-based or indium phosphide-based light-emitting material of (1);
APbX3wherein, A ═ Cs or MA, and X ═ Cl, Br or I.
Preferably, the light incident layer is prepared by mixing a diffusant and polystyrene, the diffusant comprises an organic silicon type diffusant, and the lower surface of the light incident layer is provided with a frosted, round, V-shaped or polyhedral microstructure.
In a second aspect, there is provided an apparatus comprising the optical function board of any one of the above, the apparatus comprising a display and a tv backlight.
The scheme has the following beneficial effects:
the optical function board prepared by the method has the characteristics of energy conservation, lightness, thinness, wide color gamut, high brightness, high uniformity and the like, overcomes the defects of the traditional backlight mode, and is an optical function board which is in short supply for the current market and users.
Drawings
In order to illustrate the implementation of the solution more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the solution, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic diagram of an embodiment of an optical functional board structure.
Detailed Description
Embodiments of the present solution will be described in further detail below with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the present solution, and not an exhaustive list of all embodiments. It should be noted that, in the present embodiment, features of the embodiment and the embodiment may be combined with each other without conflict.
The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Mini LED adopts straight following formula mode of being shaded, reduces traditional LED crystalline grain size to between 100 ~ 200 mu m, has greatly promoted backlight quantity, and goes the encapsulation with the backlight, cooperates l ℃ al dimming control, realizes regional brightness control, but because lack light source subassembly such as lens and backlight unit thickness is thinner, when watching closely, the image is very easily seen the shadow, is difficult to guarantee very high homogenization effect and comfortable visual experience. Therefore, a display scheme with features of energy saving, wide color gamut, high brightness, high uniformity, etc. can overcome the disadvantages of the conventional backlight mode, which is now in the shortage of the market and users.
Through research, the application provides an optical function board, and the function board comprises five layers of structures, a structural layer 1, a first light-equalizing layer 2, a light-emitting layer 3, a second light-equalizing layer 4 and a light-entering layer 5 which are connected in sequence.
In one embodiment, the total thickness of the optical function plate is 0.3-3.0 mm, and the thickness of each substrate layer forming the optical function plate and the transmittance of the optical function plate can be flexibly adjusted within the range of 25% -60%; the formula of the board for preparing the optical function board comprises Polystyrene (PS), foaming particles, a quantum material, a dispersing agent, and a proper amount of an anti-aging agent, a toughening agent, an antistatic agent, a whitening agent and other auxiliaries.
In one embodiment, the structural layer 1 includes a plurality of protruding structures arranged in an array; the protrusion structure can be one or more of a prism structure, a circular structure and a polyhedral structure, and if the protrusion is the prism structure, the prism vertex angle of the prism structure is more than or equal to 90 degrees; the protruding structure can be obtained by roller extrusion or transfer printing of transfer printing equipment, and the structure layer 1 can adjust the light-emitting angle of the optical function plate, and has the function of improving the brightness of the plate.
In one embodiment, the first light uniformizing layer 2 and the second light uniformizing layer 4 are both made of polystyrene and foamed particles as main materials, and the foamed particles are foamed at high temperature to form a first light uniformizing structure 6 and a second light uniformizing structure 7; the first light-homogenizing structure 6 is formed in the first light-homogenizing layer 2, and the second light-homogenizing structure 7 is formed in the second light-homogenizing layer 4; the average density of the first light-homogenizing structure 6 distributed in the first light-homogenizing layer 2 is more than or equal to 400/mm3The long axis size of the first light-equalizing structure 6 is distributed in the range of 20-100 μm; the average density of the second light-homogenizing structures 7 distributed in the second light-homogenizing layer 4 is more than or equal to 200/mm3The long axis size of the second light-equalizing structure 7 is distributed in the range of 50-150 μm; the foaming mode of the foaming particles for preparing the homogeneous layer comprises a physical foaming method such as inert gas, low-boiling solvent and hollow microsphere blending and a chemical foaming method of a reagent decomposition mode; the first light equalizing layer and the second light equalizing layer play a role in improving the light equalizing effect of the optical function board.
The light equalizing layer contains the light equalizing structure formed by the foaming particles, and the density of the light equalizing structure in the first light equalizing layer and the second light equalizing layer is different, so that the refractive indexes of light rays of the light source are different, the different changing angles of the light rays are ensured, and the light equalizing effect is achieved.
In one embodiment, the light emitting layer 3 is formed by mixing a quantum dot material and Polystyrene (PS) according to a mass ratio of 1-1000: 150000 the quantum dot material can perform photoluminescence function, wherein the quantum dot material is red or green, and can be selected for selenylationCadmium (CdSe) nuclear shell with chemical formula of APbX3(APbX3Among them, a ═ Cs or MA, X ═ Cl, Br, or I) perovskite-type or indium phosphide (InP) -type light-emitting materials.
In one embodiment, the light incident layer 5 is made of a mixture of a diffusing agent and polystyrene, and plays a role of guiding and diffusing light of the light source, wherein the diffusing agent comprises an organic silicon type diffusing agent, and the lower surface of the light incident layer is formed with a micro-structure such as a frosted structure, a circular structure, a V-shaped structure, or a polyhedral structure.
The present application will be described in detail with reference to fig. 1.
An optical function board, as shown in fig. 1, comprises a five-layer structure, a structural layer 1, a first light-homogenizing layer 2, a light-emitting layer 3, a second light-homogenizing layer 4 and a light-entering layer 5; the composite material is formed by co-extruding five layers in a mould. The thickness of the structural layer 1 is 0.1mm, the thickness of the first light equalizing layer 2 is 0.3mm, the thickness of the light emitting layer 3 is 1.1mm, the thickness of the second light equalizing layer is 0.3mm, the thickness of the light incident layer 5 is 0.2mm, the total thickness of the optical function board is 2.0mm, and the light transmittance of the optical function board is 45%.
The optical function board comprises the following raw materials:
the raw materials of the structural layer 1 comprise the following components in percentage by mass: 96.7% of PS, 0.2% of ultraviolet absorber, 0.2% of light stabilizer, 0.4% of antioxidant, 0.5% of antistatic agent and 2% of toughening agent;
the raw materials of the first light homogenizing layer 2 comprise the following components in percentage by mass: 97.7 percent of Expandable Polystyrene (EPS), 0.2 percent of ultraviolet absorbent, 0.2 percent of light stabilizer, 0.4 percent of antioxidant, 0.5 percent of antistatic agent and 1.0 percent of toughening agent;
the raw materials of the luminescent layer 3 comprise the following components in percentage by mass: 95.55% of PS, 0.1% of cadmium selenide green quantum dot powder, 0.05% of cadmium selenide red quantum dot powder, 2% of quantum dot water-oxygen stabilizing auxiliary agent, 0.2% of ultraviolet absorbent, 0.2% of light stabilizer, 0.4% of antioxidant, 0.5% of antistatic agent and 1.0% of toughening agent;
the raw materials of the second light homogenizing layer 4 comprise the following components in percentage by mass: 47.7% of PS, 50% of Expandable Polystyrene (EPS), 0.2% of ultraviolet absorber, 0.2% of light stabilizer, 0.4% of antioxidant, 0.5% of antistatic agent and 1.0% of toughening agent;
the light incident layer 5 comprises the following components in percentage by mass: 84.7 percent of PS, 12.0 percent of siloxane light diffusant, 0.2 percent of ultraviolet absorbent, 0.2 percent of light stabilizer, 0.4 percent of antioxidant, 0.5 percent of antistatic agent and 2 percent of toughening agent.
The materials of the layers are weighed according to the proportion respectively and then are uniformly mixed in a mixer, the materials are put into material ports of corresponding extruders, and the five extruders work simultaneously, so that the materials in a molten state in the extruders are compounded in a die and then are extruded into a whole through a die orifice, and the multilayer-structure optical function plate is prepared.
The preparation method of the optical function plate comprises the following steps:
1. preparing materials: drying the required plastic particles of each substrate layer at the temperature of 80 ℃ for 4 hours, mixing the plastic particles and the additives according to a certain ratio, and uniformly stirring in a mixer for later use;
2. die matching and equipment inspection: selecting a corresponding die according to a five-layer extrusion process, installing an extruder head, and checking the integrity of extrusion equipment and each rotating part;
3. and (3) heating: adjusting the temperature control meter to the working temperature, heating the cylinder die, and keeping the temperature for 30 minutes after the temperature reaches a set value;
4. extruding: the five extruder hoppers correspond to the first layer to the fifth layer respectively, and the uniformly stirred mixed materials of all layers are fed to corresponding feed ports respectively; replacing filter meshes (300 meshes or 400 meshes) of each machine, sequentially turning on a metering pump, rotating a screw motor, setting parameters such as pressure, feeding speed, rotating speed of a main machine and the like of the metering pump, allowing the plastic material to pass through a machine barrel and be plasticized, extruding the plastic material by an extruder, and cleaning a die lip; adjusting parameters such as a metering pump, a main line speed and pressure, and starting extrusion;
5. compounding and pressing plates: after materials in the five extruders are melted, extruding the materials into a die for compounding, and extruding a composite board through a discharge port of the die; transferring the prism surface of the mold to the upper surface of the composite board by using a transfer mold to form a prism structure surface, and simultaneously hot-pressing the lower surface of the composite board by using a roller with a microstructure carved on the surface to form a microstructure;
6. dedusting, cooling and drawing: according to production requirements, the width and the thickness of the plate are adjusted by a lower cutter, and the stacking between rollers is adjusted; removing dust after trimming the multilayer substrate, gradually conveying the plate to the rear section of a production line through a conveying device, and gradually cooling and shaping during traction;
7. cutting and packaging: the plates are gradually conveyed to a rear section cutting unit of a production line through a conveying device of the traction unit, cut into required sizes, grabbed by a mechanical arm, stacked and stacked, a layer of protective film needs to be padded between each plate to prevent a prism surface from being scratched, and then cleaned, packaged and warehoused immediately.
Because each layer uses the plastic material of different materials, there is the difference to a certain extent in the temperature setting that five extruders correspond to relevant material, and each layer material extrudes to same mould internal composite forming after each section mixing of extruder. Each extruder is divided into eight heating zones, specifically, the temperature of a blanking zone in a first zone, the temperature of a preheating zone in a second zone, the temperature of a heating zone in a third zone, the temperature of a glue melting zone in a fourth zone and a fifth zone, the temperature of a plasticizing zone in a sixth zone and a plasticizing zone in a seventh zone and the temperature of a glue mixing plasticizing zone in an eighth zone of the extruder 1 in the embodiment are 170 ℃, 185 ℃, 195 ℃, 215 ℃ and 220 ℃;
the temperature of a first zone blanking zone, a second zone preheating zone, a third zone heating zone, a fourth zone glue melting zone and a fifth zone glue melting zone of the first light homogenizing layer 2 extruder is 120 ℃, the temperature of a second zone preheating zone is 130 ℃, the temperature of a third zone heating zone is 140 ℃, the temperature of a fourth zone glue melting zone and a fifth zone glue melting zone is 150 ℃, the temperature of a sixth zone plasticizing zone and a seventh zone plasticizing zone is 160 ℃, and the temperature of an eighth zone glue mixing plasticizing zone is 170 ℃;
the temperature of a first zone blanking zone of the light-emitting layer 3 extruder is 180 ℃, the temperature of a second zone preheating zone is 190 ℃, the temperature of a third zone heating zone is 200 ℃, the temperature of a fourth zone melting zone and a fifth zone melting zone is 205 ℃, the temperature of a sixth zone plasticizing zone and a seventh zone plasticizing zone is 210 ℃, and the temperature of an eighth zone mixing plasticizing zone is 215 ℃.
The temperature of a first-zone blanking zone, a second-zone preheating zone, a third-zone heating zone, a fourth-zone glue melting zone and a fifth-zone glue melting zone of the second light homogenizing layer 4 extruder is 130 ℃, the temperature of a second-zone preheating zone is 140 ℃, the temperature of a third-zone heating zone is 150 ℃, the temperature of a fourth-zone glue melting zone and a fifth-zone glue melting zone is 160 ℃, the temperature of a sixth-zone plasticizing zone and a seventh-zone plasticizing zone is 170 ℃, and the temperature of an eighth-zone glue mixing plasticizing zone is 180 ℃;
the temperature of a first-zone blanking zone, a second-zone preheating zone, a third-zone heating zone, a fourth-zone glue melting zone and a fifth-zone glue melting zone of the light entering layer 5 extruder is 170 ℃, the temperature of a sixth-zone glue mixing plasticizing zone and a seventh-zone glue melting zone is 205 ℃, the temperature of a sixth-zone glue mixing plasticizing zone and a seventh-zone glue mixing plasticizing zone is 215 ℃, and the temperature of an eighth-zone glue mixing plasticizing zone is 220 ℃;
the extruders corresponding to the structural layer 1, the luminescent layer 3 and the light incident layer 5 are provided with vacuumizing exhaust devices, the vacuum degree is controlled to be-0.08 to-0.1 Mpa, and the extruders corresponding to the first light homogenizing layer 2 and the second light homogenizing layer 4 cannot be provided with the vacuumizing exhaust devices; the temperature of the die is 200 ℃; the temperature of the roller is proper, the temperature of the upper frosted structure roller is 115 ℃, the temperature of the transfer printing structure roller is 65 ℃, and the temperature of the mirror structure roller is 70 ℃; the pressure before the pump is 3.5 Mpa plus or minus 0.5 Mpa; on the premise of unchanging length and width, the thickness is changed by 0.1mm when the speed is normally regulated to 2.0 m/min. In the preparation process of the five-layer composite substrate, materials of all layers are fused and then compounded into a multi-layer structural plate through a discharge port of a mold, immediately in the processes of roller covering and traction, the prism surface of the mold is transferred to the upper surface of the plate by using a transfer mold to form a corner structure surface with an apex angle of about 100 degrees, and meanwhile, a roller with a microstructure carved on the surface is used for hot-pressing the lower surface of the plate into a sand grinding type microstructure.
Compared with the traditional scheme, the optical function board of the scheme can save about 15 percent of materials (save energy); and the weight can be reduced by about 15 percent (lightening and thinning) under the condition of the same volume; the color gamut of the diffusion plate manufactured by using the optical function plate of the scheme can reach 95% or more (wide color gamut); while the NTSC color gamut of the common diffusion plate is generally below 75 percent; the optical function board of the scheme has high transmittance under the same visual effect condition, thereby being beneficial to improving the brightness (high brightness); the structure layer and each light homogenizing layer of the optical function board can change and increase the refraction angle of the light source, so that the path of light entering human eyes can be changed (high uniformity).
The optical function board of the scheme can be used for commercial displays, television backlights and computer displays.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. The optical function board is characterized by comprising five layers of structures which are connected in sequence, and comprises a structure layer (1), a first light homogenizing layer (2), a light emitting layer (3), a second light homogenizing layer (4) and a light incident layer (5).
2. The optical functional plate as claimed in claim 1, wherein the total thickness of the optical functional plate is 0.3-3.0 mm, and the transmittance of the optical functional plate is 25% -60%.
3. An optical function board according to claim 1, characterized in that the structural layer (1) comprises a plurality of raised structures arranged in an array.
4. An optical functional sheet according to claim 3, wherein the convex structure is a prism structure, a circular structure or a polyhedral structure, and the prism apex angle of the prism structure is 90 degrees or more.
5. An optical function board according to claim 1, wherein the first light-homogenizing layer (2) and the second light-homogenizing layer (4) are made of polystyrene and foamed particles as main materials, and the foamed particles are foamed at high temperature to form a first light-homogenizing structure (6) and a second light-homogenizing structure (7); the first light homogenizing structure (6) is formed in the first light homogenizing layer (2), and the second light homogenizing structure (7) is formed in the second light homogenizing layer (4).
6. An optical functional plate according to claim 5, wherein the first light-equalizing structure (6) is distributed in the first light-equalizing layer (2) in an average density of 400 or more/mm3SaidThe long axis size of the first light-equalizing structure (6) is distributed in the range of 20-100 μm.
7. An optical functional plate according to claim 5, wherein the second light-equalizing structure (7) is distributed in the second light-equalizing layer (4) in an average density of 200/mm or more3The long axis size of the second light equalizing structure (7) is distributed in a range of 50-150 mu m.
8. The optical function board according to claim 1, wherein the light emitting layer (3) is prepared by blending a quantum dot material and polystyrene at a mass ratio of 1-1000: 150000, the quantum dot material is a red quantum dot material and a green quantum dot material, and the quantum dot material comprises cadmium selenide core-shell type with a chemical formula of APbX3The perovskite-based or indium phosphide-based light-emitting material of (1);
APbX3wherein, A ═ Cs or MA, and X ═ Cl, Br or I.
9. The optical function board as claimed in claim 1, wherein the light incident layer (5) is made by mixing a diffusing agent and polystyrene, the diffusing agent comprises a silicone diffusing agent, and the lower surface of the light incident layer is formed with a micro structure such as a frosted structure, a circular structure, a V-shaped structure, or a polyhedral structure.
10. A device comprising the optical function board of any one of claims 1 to 9, the device comprising a display and a television backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012540.8A CN113568222A (en) | 2021-08-31 | 2021-08-31 | Optical function board and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415422A (en) * | 2022-01-28 | 2022-04-29 | 广东粤港澳大湾区国家纳米科技创新研究院 | High-temperature-resistant quantum dot optical plate, preparation method thereof and ultrathin backlight module |
| CN114675356A (en) * | 2022-02-23 | 2022-06-28 | 广东瑞捷光电股份有限公司 | Foaming diffusion plate and preparation method thereof |
| US20230255085A1 (en) * | 2022-10-27 | 2023-08-10 | Avantama Ag | Color conversion film with separation layer |
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2021
- 2021-08-31 CN CN202111012540.8A patent/CN113568222A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415422A (en) * | 2022-01-28 | 2022-04-29 | 广东粤港澳大湾区国家纳米科技创新研究院 | High-temperature-resistant quantum dot optical plate, preparation method thereof and ultrathin backlight module |
| CN114675356A (en) * | 2022-02-23 | 2022-06-28 | 广东瑞捷光电股份有限公司 | Foaming diffusion plate and preparation method thereof |
| US20230255085A1 (en) * | 2022-10-27 | 2023-08-10 | Avantama Ag | Color conversion film with separation layer |
| US11737337B1 (en) * | 2022-10-27 | 2023-08-22 | Avantama Ag | Color conversion film with separation layer |
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