CN111208599A - Light guide plate with V type groove - Google Patents
Light guide plate with V type groove Download PDFInfo
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- CN111208599A CN111208599A CN202010165811.2A CN202010165811A CN111208599A CN 111208599 A CN111208599 A CN 111208599A CN 202010165811 A CN202010165811 A CN 202010165811A CN 111208599 A CN111208599 A CN 111208599A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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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
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- Optics & Photonics (AREA)
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- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a light guide plate with a V-shaped groove, which comprises: the light guide plate body, it includes: the first light-transmitting plate is a rectangular light-transmitting plate, and the bottom surface of the first light-transmitting plate is provided with lower corrugated bulges; the second light-transmitting plate is a rectangular light-transmitting plate, the top surface of the second light-transmitting plate is provided with upper corrugated bulges, the upper corrugated bulges can be attached to the lower corrugated bulges, and the bottom surface of the second light-transmitting plate is provided with a plurality of lower microstructures; the third light-transmitting plate is a rectangular light-transmitting plate with a V-shaped groove at the bottom, the top surface of the third light-transmitting plate is provided with a plurality of upper microstructures, the upper microstructures and the lower microstructures can be attached, the bottom surface of the third light-transmitting plate is provided with a reflective coating, the light-transmitting plate is cleaned through an ultrasonic cleaner, the cleanliness of the light-transmitting plate is improved, the transmittance is improved, and light-shielding parts are formed on two sides of the light-transmitting plate in a hot melting mode to prevent.
Description
Technical Field
The invention relates to the field of optical display, in particular to a light guide plate with a V-shaped groove and a preparation method thereof.
Background
With the development of technology, liquid crystal display technology is more mature, and televisions are also from using traditional picture tubes to the current liquid crystal display screens. The liquid crystal display screen is a passive luminous display screen and does not emit light, so the liquid crystal display screen needs a backlight module to provide a light source. The backlight module has good color reducibility, is easy to perform partition control, and has become the mainstream backlight source of the liquid crystal display screen. The backlight module can be divided into a side backlight module and a direct type backlight module according to the position difference of the liquid crystal display screen, the side backlight module can be ultrathin due to the use of a light guide plate, and the side backlight module becomes more and more market mainstream at the present of liquid crystal television thinning, so that the side backlight module of the liquid crystal display screen is also applied in a large area.
However, the uniformity of the light source of the backlight assembly directly affects the color saturation of the display screen, and thus a backlight module with higher optical brightness and good uniformity is urgently needed.
Disclosure of Invention
The invention designs and develops a light guide plate with a V-shaped groove, the light guide plate adopts a three-layer light-transmitting plate structure, a convex structure is arranged between the light-transmitting plates, the light reflection times are increased, the uniformity is better, the brightness is higher, the light-transmitting plates are cleaned by an ultrasonic cleaning machine, the cleanliness and the transmissivity of the light-transmitting plates are improved, light-shielding pieces are formed on two sides of the light-transmitting plates in a hot melting mode, light leakage of the light guide plate is prevented.
The technical scheme provided by the invention is as follows:
a light guide plate having a V-groove, comprising:
the light guide plate body, it includes:
the first light-transmitting plate is a rectangular light-transmitting plate, and the bottom surface of the first light-transmitting plate is provided with lower corrugated bulges;
the second light-transmitting plate is a rectangular light-transmitting plate, the top surface of the second light-transmitting plate is provided with upper corrugated bulges, the upper corrugated bulges can be attached to the lower corrugated bulges, and the bottom surface of the second light-transmitting plate is provided with a plurality of lower microstructures;
the third light-transmitting plate is a rectangular light-transmitting plate with a V-shaped groove at the bottom, the top surface of the third light-transmitting plate is provided with a plurality of upper microstructures, the upper microstructures and the lower microstructures can be attached to each other, and the bottom surface of the third light-transmitting plate is provided with a reflecting coating;
the lower microstructure, comprising:
the first protrusion protrudes from the bottom surface of the second light-transmitting plate, the joint of the first protrusion and the bottom surface of the second light-transmitting plate has a first width, and the first width is parallel to the direction of the top surface of the second light-transmitting plate;
the second protrusion protrudes from the bottom surface of the second light-transmitting plate, the joint of the second protrusion and the bottom surface of the second light-transmitting plate has a second width, and the second width is parallel to the direction of the top surface of the second light-transmitting plate;
wherein the first protrusion and the second protrusion have a space therebetween;
and the two LED light sources are strip light sources and are arranged on two sides of the light guide plate body.
Preferably, the angle of the V-shaped groove of the third light-transmitting plate is 150-165 deg.
Preferably, the difference between the first width and the second width is 0.01 to 0.025 mm.
Preferably, the third light-transmitting plate has a bottom surface provided with a plurality of reflective columns, including:
the first reflecting column is a cylindrical light-transmitting column;
one end of the second reflecting column is integrally connected with the first reflecting column, and the other end of the second reflecting column is provided with a circular bulge;
wherein the diameter of the second reflective column is smaller than that of the first reflective column; and
the reflective cylinder surface has a reflective coating.
Preferably, the surfaces of the first light-transmitting plate, the second light-transmitting plate, the top surface and the side surface of the third light-transmitting plate are provided with antireflection films.
Preferably, the first light-transmitting plate and the second light-transmitting plate are made of the following raw materials in parts by weight:
95-100 parts of methyl methacrylate, 4-5 parts of colloidal graphite powder, 1-2 parts of magnesium fluoride, 11-18 parts of ethylene propylene diene monomer, 14-16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 9-11 parts of acrylonitrile-butadiene-styrene copolymer.
Preferably, the third light-transmitting plate is a glass light-guiding plate, and the third light-transmitting plate is made of the following raw materials in parts by weight: 82-91 parts of silicon dioxide, 3-5 parts of barium trioxide, 4-5 parts of lead sulfide and 1-2 parts of magnesium fluoride;
wherein, the thickness of the third light-transmitting plate is 1-2 mm.
A method for preparing a light guide plate with V-shaped grooves comprises the following steps:
step one, injecting a finished material into a mold to be molded to obtain a light-transmitting plate;
step two, coating a film on the surface of the light-transmitting plate;
cleaning the light-transmitting plate by using an ultrasonic cleaning machine, wherein a cleaning agent is placed in the ultrasonic cleaning machine, and the cleaning agent consists of water, a biosurfactant and ethanol;
the cleaning agent comprises the following components in parts by weight: diethyl ether: ethanol: acetone 16:1:4: 7;
bonding the first light-transmitting plate, the second light-transmitting plate and the third light-transmitting plate through shadowless glue;
and fifthly, placing the bonded light-transmitting plate into a second die, and forming light-shading parts on two sides of the light-transmitting plate without the LED light source.
Preferably, the second mold includes:
the fixed die comprises a light-transmitting plate accommodating cavity and light-shading part accommodating cavities positioned on two sides of the light-transmitting plate accommodating cavity, the light-shading part accommodating cavities are communicated with the light-transmitting plate accommodating cavity, the depth of each light-shading part accommodating cavity is greater than that of each light-transmitting plate accommodating cavity, and the depth difference is 0.2-0.5 mm;
the movable die is hinged with the fixed die and can be buckled on the fixed die;
the fixed die and the movable die are provided with resistance wires, and the temperature of the resistance wires is controlled by adjusting the voltage at the two ends of the resistance wires.
Preferably, the shading piece is made of plastic materials and comprises the following raw materials in parts by weight: 95-98 parts of polyethylene, 3-6 parts of synthetic resin, 10-20 parts of filler, 5-10 parts of plasticizer and 3-8 parts of reinforcing agent;
injecting the plastic material in a molten state into a second die, and adjusting the temperature of the resistance wire to gradually cool and mold the shading piece; the temperature regulation formula is as follows:
wherein, Kr、KβFor the delay factor, TgIs the critical temperature, T, of the molten state of the plastic materialhM is the adjustment coefficient.
The invention has the advantages of
The invention designs and develops a light guide plate with a V-shaped groove, which adopts a three-layer light transmission plate structure, and a convex structure is arranged between the light transmission plates, so that the light reflection times are increased, the uniformity is better, and the brightness is higher; through the cleaning light-passing board of ultrasonic cleaner, improve the light-passing board cleanliness, improve transmissivity, still at light-passing board both sides hot melt shaping light-shielding member, prevent light guide plate light leak and connectivity are good, select for use anti-oxidant material to make the light guide plate, long service life, stability is good.
Drawings
Fig. 1 is a schematic structural view of a light guide plate according to the present invention.
Fig. 2 is a schematic structural view of the first transparent plate according to the present invention.
Fig. 3 is a schematic structural view of a second light-transmitting plate according to the present invention.
Fig. 4 is a schematic structural view of a third light-transmitting plate according to the present invention.
Fig. 5 is a schematic structural diagram of a lower microstructure according to the present invention.
Fig. 6 is a schematic structural diagram of an upper microstructure according to the present invention.
Fig. 7 is a schematic structural view of a light-transmitting pillar according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1, the light guide plate structure provided by the present invention includes a light guide plate body 100 and an LED light source 200.
As shown in fig. 2 to 4, the light guide plate body 100 includes: the first transparent plate 110 is a rectangular transparent plate, and the bottom surface of the first transparent plate 110 is provided with lower corrugated protrusions 111; the second transparent plate 120 is a rectangular transparent plate, the top surface of the second transparent plate has upper corrugated protrusions 121, the upper corrugated protrusions 121 can be attached to the lower corrugated protrusions 111, and the bottom surface of the second transparent plate has a plurality of lower microstructures 122; the third light-transmitting plate 130 is a rectangular light-transmitting plate with a V-shaped groove at the bottom, the top surface of the third light-transmitting plate has a plurality of upper microstructures 123, the upper microstructures 123 and the lower microstructures 122 can be attached, and the bottom surface of the third light-transmitting plate 130 has a reflective coating; preferably, the angle of the V-shaped groove of the third light-transmitting plate is 150-165 °
As shown in fig. 5, the lower microstructure 122 includes: a first protrusion 122a and a second protrusion 122b, the first protrusion 122a protrudes from the bottom surface of the second transparent plate 120, and the connection position of the first protrusion 122a and the bottom surface of the second transparent plate 120 has a first width L in the direction parallel to the top surface of the second transparent plate 1201(ii) a The second protrusion 122b protrudes from the bottom surface of the second transparent plate 120, and the connection position between the second protrusion 122b and the bottom surface of the second transparent plate 120 has a second width L in the direction parallel to the top surface of the second transparent plate2(ii) a Wherein the first protrusion 122a and the second protrusion 122b have a space therebetween; first width L1And the second width L2The difference of (A) is 0.01-0.025 mm.
As shown in fig. 6, the upper microstructures 123 and the lower microstructures 122 have opposite structures, and include first recesses 123a and second recesses 123b, the first recesses 123a are recesses on the surface of the third transparent plate 130, and the first recesses 123a have a third width L in the direction parallel to the surface of the third transparent plate 1303(ii) a The second recess 123b is a recess of the surface of the third transparent plate 130, and the second recess 123b has a fourth width L in the parallel direction of the surface of the third transparent plate 1304Wherein the first recess 123a and the second recess 123b have a space therebetween; the first recess 123a can be attached to the first protrusion 122a, and the second recess 123b can be attached to the second protrusion 123 a. The third plate 130 has a V-groove in its bottom.
As shown in FIG. 7, in another embodiment, the bottom surface of the third transparent plate 130 has a plurality of irregular reflective pillars, including: the first reflective column 131 is a cylindrical light-transmitting column; one end of the second reflective column 132 is integrally connected to the first reflective column 131, and the other end has a circular protrusion; wherein, the diameter of the second reflective column 132 is smaller than that of the first reflective column 131; the reflective cylinder surface has a reflective coating.
In another embodiment, the surfaces of the first transparent plate 110, the second transparent plate 120, the top and the side of the third transparent plate 130 have anti-reflection films, and the bottom of the third transparent plate 130 is coated with a reflective film.
The two LED light sources 200 are strip light sources and are disposed on two sides of the light guide plate body 100. Preferably, the incident angle of the LED light source is 18 to 25 °, the incident angle of the light source is properly increased, the uniformity of the light guide plate can be increased, the strip-shaped LED light source enters the light guide plate from two sides of the light guide plate body 100, the light is diffusely reflected into the light guide plate body 100, the first, second, and third light guide plates 110, 120, and 130 are all entered by the light, the bottom of the first light guide plate 110 has a corrugated protrusion, the transmission area is increased, the transmission time of the light in the light guide plate is prolonged, the light in the first light guide plate 110 enters the second light guide plate 120, the bottom of the second light guide plate 120 has a plurality of lower microstructures 122, each lower microstructure 122 includes two protrusions, the first protrusion 122a and the second protrusion 122b can effectively change the incident angle of the light, the light is incident on the third light guide plate 130, the bottom of the third light guide plate 130 reflects the light back to the second light guide plate 120, in order to enhance the light uniformity of the light guide plate, the bottom surface of the third light-transmitting plate 130 is provided with a V-shaped groove, the planar reflective surface is changed into two reflective surfaces with angles, and the reflective columns are arranged on the surface of the third light-transmitting plate, so that the light condensing effect is enhanced, and the emergent light is more uniform.
In another embodiment, to prevent the light-transmitting plate from being oxidized and affecting the reflectivity, the first light-transmitting plate and the second light-transmitting plate are made of: 95-100 parts of methyl methacrylate, 4-5 parts of colloidal graphite powder, 1-2 parts of magnesium fluoride, 11-18 parts of ethylene propylene diene monomer, 14-16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 9-11 parts of acrylonitrile-butadiene-styrene copolymer.
In another embodiment, the third light-transmitting plate is a glass light-guiding plate, which includes: 82-91 parts of silicon dioxide, 3-5 parts of barium trioxide, 4-5 parts of lead sulfide and 1-2 parts of magnesium fluoride;
preferably, the third light-transmitting plate has a thickness of 1 to 2 mm.
The light guide plate provided by the invention is prepared by the following method, comprising the following steps:
step one, injecting a forming material of the light-transmitting plate into a mold for forming to obtain the light-transmitting plate;
step two, the surfaces of the first transparent plate 110, the second transparent plate 120, the top and the side of the third transparent plate 130 are coated with antireflection films, and the bottom of the third transparent plate 130 is coated with a reflective film.
Step three, cleaning the first light-transmitting plate 110, the second light-transmitting plate 120 and the third light-transmitting plate 130 by using an ultrasonic cleaning machine, wherein a cleaning agent is placed in the ultrasonic cleaning machine, the cleaning agent is composed of water, a biosurfactant and ethanol, and the mass parts of the cleaning agent are as follows: diethyl ether: ethanol: preferably, the ultrasonic cleaning time is 10-15min, wherein acetone is 16:1:4: 7;
bonding the first light-transmitting plate, the second light-transmitting plate and the third light-transmitting plate through UV glue;
and step five, placing the bonded first transparent plate 110, second transparent plate 120 and third transparent plate 130 into a second die to form light shading parts on the other two sides of the first transparent plate, second transparent plate and third transparent plate.
The second mold includes:
the fixed die comprises a light-transmitting plate accommodating cavity and light-shading part accommodating cavities positioned on two sides of the light-transmitting plate accommodating cavity, the light-shading part accommodating cavities are communicated with the light-transmitting plate accommodating cavity, the depth of each light-shading part accommodating cavity is greater than that of each light-transmitting plate accommodating cavity, and the depth difference is 0.2-0.5 mm;
the movable die is hinged with the fixed die and can be buckled on the fixed die; the fixed die and the movable die are provided with resistance wires, and the temperature of the resistance wires is controlled by adjusting the voltage at the two ends of the resistance wires;
the shading piece is made of plastic materials and comprises: 95-98 parts of polyethylene, 3-6 parts of synthetic resin, 10-20 parts of filler, 5-10 parts of plasticizer and 3-8 parts of reinforcing agent; injecting a plastic material in a molten state into a second die, and adjusting the temperature of the resistance wire to gradually cool and mold the shading part, wherein the temperature adjustment formula of the resistance wire is as follows
Wherein, Kr、KβAs a delay factor, KrIs 0.245, KβIs 0.273, TgIs the critical temperature, T, of the molten state of the plastic materialhThe value of the temperature coefficient is 313K, and the value of M is 0.43-0.57.
Experimental example 1: selecting 5 experimental samples of the light guide plate with the three-layer structure manufactured by the method,
the first and second light-transmitting plates of the sample piece 1 comprise the following raw materials in parts by weight:
95 parts of methyl methacrylate, 4 parts of colloidal graphite powder, 1 part of magnesium fluoride, 11 parts of ethylene propylene diene monomer, 14 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 9 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 82 parts of silicon dioxide, 3 parts of barium trioxide, 4 parts of lead sulfide and 1 part of magnesium fluoride.
The first and second light-transmitting plates of the sample piece 2 comprise the following raw materials in parts by weight:
100 parts of methyl methacrylate, 5 parts of colloidal graphite powder, 2 parts of magnesium fluoride, 18 parts of ethylene propylene diene monomer, 16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 11 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 91 parts of silicon dioxide, 5 parts of barium trioxide, 5 parts of lead sulfide and 2 parts of magnesium fluoride.
The first and second light-transmitting plates of the sample piece 3 comprise the following raw materials in parts by weight:
98 parts of methyl methacrylate, 4 parts of colloidal graphite powder, 1 part of magnesium fluoride, 15 parts of ethylene propylene diene monomer, 15 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 10 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 86 parts of silicon dioxide, 4 parts of barium trioxide, 4 parts of lead sulfide and 1 part of magnesium fluoride.
The first and second light-transmitting plates of the sample piece 4 comprise the following raw materials in parts by weight:
98 parts of methyl methacrylate, 4 parts of colloidal graphite powder, 1 part of magnesium fluoride, 15 parts of ethylene propylene diene monomer, 15 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 10 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 82 parts of silicon dioxide, 3 parts of barium trioxide, 4 parts of lead sulfide and 1 part of magnesium fluoride.
The first and second light-transmitting plates of the sample piece 5 comprise the following raw materials in parts by weight:
100 parts of methyl methacrylate, 5 parts of colloidal graphite powder, 2 parts of magnesium fluoride, 18 parts of ethylene propylene diene monomer, 16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 11 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 91 parts of silicon dioxide, 5 parts of barium trioxide, 5 parts of lead sulfide and 2 parts of magnesium fluoride.
Selecting 5 comparison sample pieces which are the same as the light guide plate in size and made of PAMA (polyamide), respectively measuring the transmittance of the central areas of the sample pieces and the comparison pieces, and obtaining comparison results as shown in Table 1.
TABLE 1 comparison of the transmittance of the experimental and comparative samples
| Sample piece | Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 |
| Transmittance of light | 95.9％ | 96.6％ | 96.7％ | 96.4％ | 97.6％ |
| Comparison piece | Comparative member 1 | Comparative member 2 | Comparison item 3 | Comparison item 4 | Comparison item 5 |
| Transmittance of light | 90.2％ | 93.4％ | 91.8％ | 91.5％ | 92.7％ |
Experimental example 2: the sample pieces with the tested transmittance in experimental example 1 were respectively placed in an aging experimental box, the testing time was set to be equivalent to 10 years for normal application of the product, and after the test cycle was completed, the transmittance of the central regions of the sample pieces and the comparison piece was respectively measured, and the comparison results are shown in table 2.
TABLE 2 comparison of the transmittance of the experimental and comparative samples after aging experiments
| Sample piece | Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 |
| Transmittance of light | 83.2％ | 85.4％ | 88.8％ | 81.5％ | 82.7％ |
| Comparison piece | Comparative member 1 | Comparative member 2 | Comparison item 3 | Comparison item 4 | Comparison item 5 |
| Through the use ofRate of change | 63.2％ | 65.4％ | 68.8％ | 51.5％ | 62.7％ |
Experimental example 3. 5 experimental samples of the light guide plate with the three-layer structure manufactured by the method of the invention are selected, the transmittances of the corners and the central area are respectively measured, and the difference value of the transmittances is not more than 2 percent.
Experimental example 4: selecting 3 experimental samples of the light guide plate and the shading part with the three-layer structure manufactured by the method
The first and second light-transmitting plates of the sample piece 6 comprise the following raw materials in parts by weight:
100 parts of methyl methacrylate, 5 parts of colloidal graphite powder, 2 parts of magnesium fluoride, 18 parts of ethylene propylene diene monomer, 16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 11 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 91 parts of silicon dioxide, 5 parts of barium trioxide, 5 parts of lead sulfide and 2 parts of magnesium fluoride
The shading part comprises the following raw materials in parts by weight: 98 parts of polyethylene, 6 parts of synthetic resin, 20 parts of filling material, 10 parts of plasticizer and 8 parts of reinforcing agent;
the first and second light-transmitting plates of the sample piece 7 comprise the following raw materials in parts by weight:
100 parts of methyl methacrylate, 5 parts of colloidal graphite powder, 2 parts of magnesium fluoride, 18 parts of ethylene propylene diene monomer, 16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 11 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 91 parts of silicon dioxide, 5 parts of barium trioxide, 5 parts of lead sulfide and 2 parts of magnesium fluoride
The shading part comprises the following raw materials in parts by weight: 95 parts of polyethylene, 3 parts of synthetic resin, 10 parts of filler, 5 parts of plasticizer and 3 parts of reinforcing agent;
the first and second light-transmitting plates of the sample piece 8 comprise the following raw materials in parts by weight:
100 parts of methyl methacrylate, 5 parts of colloidal graphite powder, 2 parts of magnesium fluoride, 18 parts of ethylene propylene diene monomer, 16 parts of nano calcium carbonate, 1 part of stearic acid, 4 parts of lead sulfide and 11 parts of acrylonitrile-butadiene-styrene copolymer.
The third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 91 parts of silicon dioxide, 5 parts of barium trioxide, 5 parts of lead sulfide and 2 parts of magnesium fluoride.
The shading part comprises the following raw materials in parts by weight: 97 parts of polyethylene, 4 parts of synthetic resin, 18 parts of filling material, 8 parts of plasticizer and 6 parts of reinforcing agent.
3 pieces of comparison sample pieces which are the same as the light guide plate in size and made of PAMA are selected, and the transmittances of the edges of the sample pieces and the comparison pieces are respectively measured.
TABLE 4 comparison of the transmittance of the experimental and comparative samples after aging experiments
| Sample piece | Sample 6 | Sample 7 | Sample 8 |
| Transmittance of light | 0.67％ | 0.52％ | 0.38％ |
| Comparison piece | Comparison item 6 | Comparison item 7 | Comparison piece 8 |
| Transmittance of light | 3.05％ | 2.62％ | 1.45％ |
The invention designs and develops a light guide plate with a V-shaped groove, which adopts a three-layer light transmission plate structure, and a convex structure is arranged between the light transmission plates, so that the light reflection times are increased, the uniformity is better, and the brightness is higher; through the cleaning light-passing board of ultrasonic cleaner, improve the light-passing board cleanliness, improve transmissivity, still at light-passing board both sides hot melt shaping light-shielding member, prevent light guide plate light leak and connectivity are good, select for use anti-oxidant material to make the light guide plate, long service life, stability is good.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (5)
1. A light guide plate with V type groove, characterized by, includes:
the light guide plate body, it includes:
the first light-transmitting plate is a rectangular light-transmitting plate, and the bottom surface of the first light-transmitting plate is provided with lower corrugated bulges;
the second light-transmitting plate is a rectangular light-transmitting plate, the top surface of the second light-transmitting plate is provided with upper corrugated bulges, the upper corrugated bulges can be attached to the lower corrugated bulges, and the bottom surface of the second light-transmitting plate is provided with a plurality of lower microstructures;
the third light-transmitting plate is a rectangular light-transmitting plate with a V-shaped groove at the bottom, the top surface of the third light-transmitting plate is provided with a plurality of upper microstructures, the upper microstructures and the lower microstructures can be attached to each other, and the bottom surface of the third light-transmitting plate is provided with a reflecting coating;
the lower microstructure, comprising:
the first protrusion protrudes from the bottom surface of the second light-transmitting plate, the joint of the first protrusion and the bottom surface of the second light-transmitting plate has a first width, and the first width is parallel to the direction of the top surface of the second light-transmitting plate;
the second protrusion protrudes from the bottom surface of the second light-transmitting plate, the joint of the second protrusion and the bottom surface of the second light-transmitting plate has a second width, and the second width is parallel to the direction of the top surface of the second light-transmitting plate;
wherein the first protrusion and the second protrusion have a space therebetween;
the two LED light sources are strip-shaped light sources and are arranged on two sides of the light guide plate body;
the third light-transmitting plate is a glass light-guiding plate and is made of the following raw materials in parts by weight: 82-91 parts of silicon dioxide, 3-5 parts of barium trioxide, 4-5 parts of lead sulfide and 1-2 parts of magnesium fluoride;
wherein, the thickness of the third light-transmitting plate is 1-2 mm.
2. The light guide plate with the V-groove of claim 1, wherein the angle of the V-groove of the third light-transmitting plate is 150 ° to 165 °.
3. The light guide plate having V-grooves according to claim 2, wherein the difference between the first width and the second width is 0.01 to 0.025 mm.
4. The light guide plate with the V-shaped groove as claimed in claim 3, wherein the third light-transmitting plate has a plurality of reflective pillars on a bottom surface thereof, comprising:
the first reflecting column is a cylindrical light-transmitting column;
one end of the second reflecting column is integrally connected with the first reflecting column, and the other end of the second reflecting column is provided with a circular bulge;
wherein the diameter of the second reflective column is smaller than that of the first reflective column; and
the reflective cylinder surface has a reflective coating.
5. The light guide plate with V-grooves of claim 1, wherein the first transparent plate, the second transparent plate, the third transparent plate and the top and side surfaces of the first transparent plate have antireflection films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165811.2A CN111208599A (en) | 2018-11-12 | 2018-11-12 | Light guide plate with V type groove |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340271.6A CN109581575B (en) | 2018-11-12 | 2018-11-12 | Light guide plate |
| CN202010165811.2A CN111208599A (en) | 2018-11-12 | 2018-11-12 | Light guide plate with V type groove |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811340271.6A Division CN109581575B (en) | 2018-11-12 | 2018-11-12 | Light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111208599A true CN111208599A (en) | 2020-05-29 |
Family
ID=65922253
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010165811.2A Withdrawn CN111208599A (en) | 2018-11-12 | 2018-11-12 | Light guide plate with V type groove |
| CN202010165830.5A Withdrawn CN111175882A (en) | 2018-11-12 | 2018-11-12 | Light guide plate |
| CN201811340271.6A Active CN109581575B (en) | 2018-11-12 | 2018-11-12 | Light guide plate |
| CN202010165823.5A Withdrawn CN111208600A (en) | 2018-11-12 | 2018-11-12 | Light guide plate preparation method |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010165830.5A Withdrawn CN111175882A (en) | 2018-11-12 | 2018-11-12 | Light guide plate |
| CN201811340271.6A Active CN109581575B (en) | 2018-11-12 | 2018-11-12 | Light guide plate |
| CN202010165823.5A Withdrawn CN111208600A (en) | 2018-11-12 | 2018-11-12 | Light guide plate preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN111208599A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109581575A (en) | 2019-04-05 |
| CN111175882A (en) | 2020-05-19 |
| CN109581575B (en) | 2020-11-27 |
| CN111208600A (en) | 2020-05-29 |
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Application publication date: 20200529 |