CN105353445A - PMMA light guide plate with single-side microstructure and light output micro prism structure - Google Patents
PMMA light guide plate with single-side microstructure and light output micro prism structure Download PDFInfo
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- CN105353445A CN105353445A CN201510777125.XA CN201510777125A CN105353445A CN 105353445 A CN105353445 A CN 105353445A CN 201510777125 A CN201510777125 A CN 201510777125A CN 105353445 A CN105353445 A CN 105353445A
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 title claims abstract description 46
- 239000004926 polymethyl methacrylate Substances 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000007598 dipping method Methods 0.000 claims description 23
- 238000013461 design Methods 0.000 description 16
- 239000000976 ink Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 238000007639 printing Methods 0.000 description 12
- 238000004020 luminiscence type Methods 0.000 description 10
- 238000000605 extraction Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000005142 aphototropism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- 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
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a PMMA light guide plate with a single-side microstructure and a light output micro-prism structure. The light guide plate comprises a light passing plate, and the light passing plate comprises a light output surface and a bottom surface, and is made of a PMMA material; the light output surface is provided with the prism structure, the prism structure includes projections which are arranged in parallel, the cross section of the projections is arc-shaped, V-shaped grooves are formed between the adjacent projections respectively, and the depth and the span of each V-shaped are set as 4-75 micron and 50-370 micron respectively according to different thicknesses of the light passing plate; the bottom surface is provided with a spherical projection array, the array comprises M rows and N columns, spherical projections are the same in size and are uniformly distributed at the bottom surface, and the spherical projections in the two adjacent rows are arranged in a staggered manner in the column direction; and the central distances between two adjacent spherical projections ranges from 0.960-1.0mm, the diameter of the bottom side of each spherical projection ranges from 0.675 to 0.7mm, and the height of the projection ranges from 0.315 to 0.35mm.The light guide plate is made of the PMMA material, the light output surface and the bottom surface are provided with different micro structures respectively, and the performance of the light guide plate is improved substantially.
Description
Technical field
The present invention relates to a kind of blooming piece, particularly relate to a kind of PMMA light guide plate with one side microstructure and bright dipping micro-prism structure.
Background technology
At present, liquid crystal indicator is applied owing to having the thin outstanding advantage of fuselage in a lot of electronic product, as in LCD TV, desk-top display screen or notebook computer.
Usually, liquid crystal indicator includes display panels and backlight module.The principle of work of display panels places liquid crystal molecule in the middle of the glass substrate that two panels is parallel, there is the tiny electric wire of many vertical and levels in the middle of two panels glass substrate, change direction by whether being energized to control liquid crystal molecule, the light refraction of backlight module is out produced picture.Because display panels itself is non-luminous, the light source provided by backlight module is therefore needed normally to provide show image.Backlight module can be divided into down straight aphototropism mode set and side entrance back module according to the difference of light source light source incoming position.Therefore namedly to conceive: the illuminating source of down straight aphototropism mode set is located immediately at display panels rear, and direct forming surface light source is supplied to liquid crystal panel; Side entrance back module is then back plate edges place lamp bar being arranged on display panels proceeds posterolateral, makes light enter forming surface light source from the sidepiece of backlight module and is supplied to display panels.Backlight module generally includes light source, reflecting plate, light guide plate and other optics modules etc., for the backlight module of side entering type, light source enters from light guide plate sidepiece, then through light guide plate to the guiding in light transmission direction and then forming surface light source, so in order to ensure that it can provide evenly luminous and that brightness is enough area source for display panels, light guide plate wherein then becomes vital parts.
Light guide plate, for guiding light transmission direction, the pointolite that the incident side by light guide plate enters or line source are penetrated by the exiting surface of light guide plate and then are become area source after the scattering and reflection of light guide plate.Furthermore, whether this area source has enough brightness and the whether luminous structural design evenly then depending on light guide plate completely.
In traditional light guide plate design, especially in plate shaped light guide plate: 1. have one side that the design of U-shaped groove one side printing light guide ink site is set, the face at U-lag place is allowed to be exiting surface, allow the face at place, light guide ink site be bottom surface, make it to destroy the total reflection of light thus light can be penetrated from exiting surface in a large number; 2. there is one side that the design of V-shaped groove one side printing light guide ink site is set, allow the face at V-shaped groove place be exiting surface, allow the face at place, light guide ink site be bottom surface, make it to destroy the total reflection of light thus light can be penetrated from exiting surface in a large number.By the cooperation of U-lag and ink site, or the transmission direction of the cooperation of V-shaped groove and ink site to light guides, and then sends the enough and light be evenly distributed of brightness at the exiting surface of light guide plate.
In above-mentioned design, because V-shaped groove itself has a tip, the bad management and control although processing is got up, more easily guides the transmission of light compared to U-lag V-shaped groove, so application is also more extensive.But be no matter U-lag design or V-shaped groove design: first, they all to need in printing light guide ink site, bottom surface the enough and uniform feature of luminescence to the brightness meeting light guide plate.And the ink printing of light guide plate itself is not easily management and control in process of production, add and also will to match the incompatible guiding completed light with the U-lag of design or V-shaped groove, therefore its production process requires harsh, and complicated.Simultaneously from another aspect, due to the more complicated of typography own, so need the equipment a lot (such as printing press, infrared drying stove etc.) dropped into, input cost is higher, and a large amount of ink material that uses also easily produces waste gas in printing process, pollute.
Meanwhile, tradition also has a kind of light guide plate to be design like this: 3. simultaneously arrange U-lag and have smoothness on one surface, and be added with a large amount of guide-lighting particle, allow the face at U-lag place be exiting surface; 4. simultaneously arrange V-shaped groove to have smoothness on one surface, and be added with a small amount of guide-lighting particle, allow the face at V-shaped groove place be exiting surface.Guided by U-lag and the cooperation of guide-lighting particle or the transmission direction of cooperation to light of V-shaped groove and guide-lighting particle, and then make light extraction efficiency and the homogeneity of guarantee light guide plate.This two kinds of light guide plate design above-mentioned does not just need printing-ink site, solves the problem that typography not easily management and control, equipment investment are too high, easily pollute.But the guide-lighting particle components preparation process complicated difficult control added in these two kinds of light guide plate designs, R&D costs are high, and use cost is also high.Although market there is the guide-lighting particle that some compositions are simply common, its effect that light guide plate can be reached is unsatisfactory.
Summary of the invention
The object of the invention is to provide a kind of PMMA light guide plate with one side microstructure and bright dipping micro-prism structure based on the defect existing for above light guide plate, this light guide plate both need not adopt typography to carry out the printing of light guide ink site, also extra guide-lighting particle need not be added, just obtain even more excellent light guide effect identical with the above two, brightness is high, luminescence is more even.
The object of the invention is to realize by the following technical solutions:
Have a PMMA light guide plate for one side microstructure and bright dipping micro-prism structure, it comprises a light-passing board, and described light-passing board comprises the exiting surface bottom surface relative with exiting surface with, and described light-passing board is made up of PMMA material, wherein
Described exiting surface is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved projections, be formed with V-groove between two adjacent projections, the degree of depth of described V-groove and span are arranged on 4 ~ 75 μm and 50 ~ 370 μm according to the different-thickness of light-passing board respectively;
Described bottom surface is provided with hemisphere jut array, described hemisphere jut array is the capable N row of M, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut of adjacent rows is crisscross arranged in the row direction, center distance wherein between two adjacent hemisphere juts is at 0.960 ~ 1.0mm, the basal diameter of each hemisphere jut is at 0.675 ~ 0.7mm simultaneously, and height of projection is at 0.315 ~ 0.35mm.
Preferably, the R angle value of described projection is 203 ~ 227 °.
Preferably, described projection cross section semicircular in shape.
Preferably, the shape of described hemisphere jut is semisphere or Part-spherical.
Preferably, the material of described hemisphere jut is PMMA, and one-body molded with light-passing board.
Preferably, the thickness of described light-passing board is at 0.5 ~ 3.0mm.
Preferably, when described light-passing board thickness is 0.5mm, the degree of depth of described V-groove is at 4 ~ 6 μm, and span is at 50 ~ 65 μm.
Preferably, when described light-passing board thickness is 1.0mm, the degree of depth of described V-groove is at 7 ~ 8 μm, and span is at 50 ~ 65 μm.
Preferably, when described light-passing board thickness is 2.0mm, the degree of depth of described V-groove is at 35 ~ 40 μm, and span is at 150 ~ 165 μm.
Preferably, when described light-passing board thickness is 3.0mm, the degree of depth of described V-groove is at 70 ~ 75 μm, and span is at 300 ~ 370 μm.
Owing to have employed technique scheme, the present invention has the following advantages:
The PMMA light guide plate with one side microstructure and bright dipping micro-prism structure of the present invention is by arranging unique V-groove at the exiting surface of light-passing board, the hemisphere jut array of layout arrangement uniqueness is set in the bottom surface of light-passing board, and by supplemental characteristic that both strict controls combine with PMMA material (polymethylmethacrylate), light guide plate is made not need to republish, do not need to add guide-lighting particle yet, just more excellent technique effect is reached, this technique effect is embodied in higher light extraction efficiency (the i.e. high brightness that light guide plate obtains, reach 5.6Kcd/m
2) and luminous evenly the characteristic of (i.e. high evenness, reaches 89%).Meanwhile, adopt the PMMA material with high transparent to make light guide plate, make the light colourity impact of light guide plate on light source especially white light source little, the bright dipping in whole plate face there will not be color distortion.
Accompanying drawing explanation
Fig. 1 is the schematic bottom view of PMMA light guide plate of the present invention;
Fig. 2 is the I place enlarged diagram in Fig. 1;
Fig. 3 is hemisphere jut array upper right corner partial structurtes schematic diagram in Fig. 1;
Fig. 4 is the schematic cross-section of PMMA light guide plate of the present invention;
Fig. 5 be PMMA light guide plate of the present invention with light source coordinate schematic diagram.
Embodiment
The technological means realized to make the present invention, creation characteristic, reach object and effect clearly and be easy to understand, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated:
As Figure 1-4, the invention provides a kind of PMMA light guide plate with one side microstructure and bright dipping micro-prism structure, it comprises a light-passing board 100, and described light-passing board comprises an exiting surface 110 bottom surface relative with exiting surface with one 120, described light-passing board is made up of PMMA material, wherein
Described exiting surface 110 is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved projections 111, be formed with V-groove 112 between two adjacent projections, the degree of depth a of described V-groove and span b is arranged on 4 ~ 75 μm and 50 ~ 370 μm according to the different-thickness of light-passing board respectively; Described bottom surface 120 is provided with hemisphere jut array, described hemisphere jut array is the capable N row of M, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut of adjacent rows is crisscross arranged in the row direction, center distance L wherein between two adjacent hemisphere juts is at 0.960 ~ 1.0mm, the basal diameter d of each hemisphere jut is at 0.675 ~ 0.7mm simultaneously, and height of projection h is at 0.315 ~ 0.35mm.
In such scheme, composition graphs 5, described light-passing board also comprises at least one incidence surface 130 (having two incidence surfaces in Fig. 4), in order to receive the light that light source 200 sends.Here light source 200 can be LED lamp bar, also can be other fluorescent tubes.Light source 200 is disposed adjacent with two incidence surfaces 130 of light guide plate respectively.After the light sent when light source 200 enters light guide plate 100 from incidence surface 130, when running into above-mentioned V-groove 112 in light guide plate, just can there is reflection and scattering in light, and transmit to each different directions, finally penetrated by the exiting surface 110 of light guide plate.And in order to make light evenly penetrate from exiting surface 110 as far as possible, thus improve the light extraction efficiency (i.e. brightness) of light guide plate, the present invention arranges hemisphere jut array in the bottom surface 120 of light guide plate, hemisphere jut has arc-shaped curved surface, so can be undertaken reflecting or reflection blocking by these hemisphere juts when light is for penetrating from the bottom surface of light guide plate, make it to penetrate from the exiting surface 110 relative with bottom surface 120.
Add because light guide plate is not only to ensure enough brightness and light extraction efficiency, the light sent also will be made to want evenly, there will not be the situation that local is bright, local is dark, thus have impact on user's use, the present invention also conducts in-depth research the degree of depth a of V-groove 112 and the arrangement [comprising center distance L, height of projection h and protruding basal diameter d tri-key factors] of span b and hemisphere jut 121 array, the light guide plate of producing is made not only to have enough brightness, exceed several grades of more than required standard, but also made luminescence more even.These factors decide light extraction efficiency height and the uniformity of luminance of whole light guide plate.
Meanwhile, a good and bad key factor in addition of described light guide plate light guide effect is then material.Present invention employs and preferentially have employed PMMA (methyl methacrylate) material, PMMA is macromolecule transparent material the most excellent at present, and visible light transmissivity reaches 92%, higher than the penetrability of glass.Therefore the high light transmittance of PMMA then becomes the prioritizing selection of light guide plate to material.Furthermore, because PMMA light transmission is high, then colourity is low, and make the light colourity impact of light guide plate on light source especially white light source little, the bright dipping in whole plate face there will not be color distortion.In other words, user can not see the phenomenon that display device has local partially yellow.Thus, the present invention is in conjunction with PMMA properties of materials, have developed different parameters design [arrangement (comprising center distance L, height of projection h and protruding basal diameter d tri-key factors) of the degree of depth a of V-groove 112 and span b and hemisphere jut 121 array] of said structure, make light guide plate have outstanding luminosity and Luminescence Uniformity.In order to further illustrate some characteristics that light guide plate of the present invention adopts PMMA material to have, in table 1, list the physical property table of PMMA material:
Table 1
Can obviously be seen by upper table 1, PMMA material has the characteristic of high light transmittance, low water absorption, so be fit closely compared to PS (polystyrene) material for light guide plate.
As the present invention further technical scheme be that the R angle value β of described projection 111 is 203 ~ 227 °.This R angle value size determines the spacing size of two adjacent V-grooves, and V-groove is primary structure light being carried out to transmission direction guiding, and therefore this R angle value β is also one of them key factor of light guide plate light guide effect.It is further preferred that described projection 111 cross section semicircular in shape.
In wherein a kind of preferred embodiment of the present invention, the shape of described hemisphere jut is semisphere or Part-spherical (namely cross section radian is equal to or less than 180 °).Preferably, the material of described hemisphere jut is PMMA, and one-body molded with light-passing board.Above-mentionedly mention, the arc-shaped curved surface of hemisphere jut can reflect the light from incidence surface 130 or reflect, and light is penetrated from exiting surface.
Mention in such scheme, the degree of depth of described V-groove and span are arranged on 4 ~ 75 μm and 50 ~ 370 μm according to the different-thickness of light-passing board respectively.Next, the present invention does and further divides, and provides some embodiments:
Wherein, the thickness of described light-passing board is at 0.5 ~ 3.0mm.And different light-passing board thickness, the V-groove degree of depth on it and span are discrepant, below provide the V-groove depth range wherein needed for several sheet metal thickness and span scope:
when described light-passing board thickness is 0.5mm, the degree of depth of described V-groove is at 4 ~ 6 μm, and span is at 50 ~ 65 μm.
when described light-passing board thickness is 1.0mm, the degree of depth of described V-groove is at 7 ~ 8 μm, and span is at 50 ~ 65 μm.
when described light-passing board thickness is 2.0mm, the degree of depth of described V-groove is at 35 ~ 40 μm, and span is at 150 ~ 165 μm.
when described light-passing board thickness is 3.0mm, the degree of depth of described V-groove is at 70 ~ 75 μm, and span is at 300 ~ 370 μm.
Embodiment 1
With reference to the schematic diagram of Fig. 1-4, the invention provides the light guide plate A with one side microstructure and bright dipping micro-prism structure that a kind of thickness is 0.5mm, material is PMMA material, it comprises one piece of light-passing board 100, the exiting surface 110 of this light-passing board is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved R angle value β the projection 111 of 205 °, being formed with degree of depth a between two adjacent protrusions is 5 μm, and span b is the V-groove 112 of 53 μm; The bottom surface of this light-passing board is provided with hemisphere jut array, described hemisphere jut array is the some row of several rows, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut 121 of adjacent rows is crisscross arranged in the row direction, center distance L wherein between two adjacent hemisphere juts is 0.967mm, the basal diameter d of each hemisphere jut is at 0.68mm, and height of projection h is at 0.32mm.See table 2 in detail:
Table 2
The light guide plate A of above-mentioned design, when placing light source from the side, Luminescence Uniformity reaches 89%, and without color distortion, light extraction efficiency and brightness can reach 5.0Kcd/m
2, far beyond the industry standard of light guide plate.And do not need printing conductive inks site, do not need to add guide-lighting particle yet, just achieve even more excellent effect identical with the two, also greatly saved production cost simultaneously.
Embodiment 2
With reference to the schematic diagram of Fig. 1-4, the invention provides the light guide plate B with one side microstructure and bright dipping micro-prism structure that a kind of thickness is 1.0mm, material is PMMA material, it comprises one piece of light-passing board 100, the exiting surface 110 of this light-passing board is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved R angle value β the projection 111 of 213 °, being formed with degree of depth a between two adjacent protrusions is 7.5 μm, and span b is the V-groove 112 of 59 μm; The bottom surface of this light-passing board is provided with hemisphere jut array, described hemisphere jut array is the some row of several rows, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut 121 of adjacent rows is crisscross arranged in the row direction, center distance L wherein between two adjacent hemisphere juts is 0.974mm, the basal diameter d of each hemisphere jut is at 0.684mm, and height of projection h is at 0.33mm.See table 3 in detail:
Table 3
The light guide plate B of above-mentioned design, when placing light source from the side, Luminescence Uniformity reaches 88%, and without color distortion, light extraction efficiency and brightness can reach 5.3Kcd/m
2, far beyond the industry standard of light guide plate.And do not need printing conductive inks site, do not need to add guide-lighting particle yet, just achieve even more excellent effect identical with the two, also greatly saved production cost simultaneously.
Embodiment 3
With reference to the schematic diagram of Fig. 1-4, the invention provides the light guide plate C with one side microstructure and bright dipping micro-prism structure that a kind of thickness is 2.0mm, material is PMMA material, it comprises one piece of light-passing board 100, the exiting surface 110 of this light-passing board is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved R angle value β the projection 111 of 220 °, being formed with degree of depth a between two adjacent protrusions is 37 μm, and span b is the V-groove 112 of 158 μm; The bottom surface of this light-passing board is provided with hemisphere jut array, described hemisphere jut array is the some row of several rows, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut 121 of adjacent rows is crisscross arranged in the row direction, center distance L wherein between two adjacent hemisphere juts is 0.983mm, the basal diameter d of each hemisphere jut is at 0.69mm, and height of projection h is at 0.34mm.See table 4 in detail:
Table 4
The light guide plate C of above-mentioned design, when namely incidence surface places light source from the side, Luminescence Uniformity reaches 89%, and without color distortion, light extraction efficiency and brightness can reach 5.6Kcd/m
2, far beyond the industry standard of light guide plate.And do not need printing conductive inks site, do not need to add guide-lighting particle yet, just achieve even more excellent effect identical with the two, also greatly saved production cost simultaneously.
Embodiment 4
With reference to the schematic diagram of Fig. 1-4, the invention provides the light guide plate D with one side microstructure and bright dipping micro-prism structure that a kind of thickness is 3.0mm, material is PMMA material, it comprises one piece of light-passing board 100, the exiting surface 110 of this light-passing board is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved R angle value β the projection 111 of 223 °, being formed with degree of depth a between two adjacent protrusions is 73 μm, and span b is the V-groove 112 of 340 μm; The bottom surface of this light-passing board is provided with hemisphere jut array, described hemisphere jut array is the some row of several rows, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut 121 of adjacent rows is crisscross arranged in the row direction, center distance L wherein between two adjacent hemisphere juts is 1.0mm, the basal diameter d of each hemisphere jut is at 0.7mm, and height of projection h is at 0.35mm.See table 5 in detail:
Table 5
The light guide plate D of above-mentioned design, when namely incidence surface places light source from the side, Luminescence Uniformity reaches 87%, and without color distortion, light extraction efficiency and brightness can reach 5.4Kcd/m
2, far beyond the industry standard of light guide plate.And do not need printing conductive inks site, do not need to add guide-lighting particle yet, just achieve even more excellent effect identical with the two, also greatly saved production cost simultaneously.
In general, the PMMA light guide plate with one side microstructure and bright dipping micro-prism structure of the present invention is by arranging unique V-groove at the exiting surface of light-passing board, the hemisphere jut array of layout arrangement uniqueness is set in the bottom surface of light-passing board, and pass through the supplemental characteristic of both strict controls, light guide plate is made not need to republish, do not need to add guide-lighting particle, just can reach more excellent technique effect, show uniformity of luminance and luminosity yet.Tradition is all the light guide plate employing mode of printing of PMMA material or the addition manner of guide-lighting particle, and the luminosity that can reach is generally at 4.3-4.7Kcd/m
2, Luminescence Uniformity is generally at 81-85%, and inventor is by arduous innovation and strict test, and having made luminosity can up to 5.6Kcd/m
2, Luminescence Uniformity can, up to the light guide plate of 89%, make the development of light guide plate step forward a step again.
Although embodiment of the present invention are open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. have a PMMA light guide plate for one side microstructure and bright dipping micro-prism structure, it comprises a light-passing board, and described light-passing board comprises the exiting surface bottom surface relative with exiting surface with, and it is characterized in that, described light-passing board is made up of PMMA material, wherein
Described exiting surface is provided with prism structure, described prism structure has some that be arranged in parallel, that cross section is curved projections, be formed with V-groove between two adjacent projections, the degree of depth of described V-groove and span are arranged on 4 ~ 75 μm and 50 ~ 370 μm according to the different-thickness of light-passing board respectively;
Described bottom surface is provided with hemisphere jut array, described hemisphere jut array is the capable N row of M, all hemisphere juts are in the same size and be uniformly distributed on bottom surface, and each hemisphere jut of adjacent rows is crisscross arranged in the row direction, center distance wherein between two adjacent hemisphere juts is at 0.960 ~ 1.0mm, the basal diameter of each hemisphere jut is at 0.675 ~ 0.7mm simultaneously, and height of projection is at 0.315 ~ 0.35mm.
2. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 1, it is characterized in that, the R angle value of described projection is 203 ~ 227 °.
3. there is the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 2, it is characterized in that, described projection cross section semicircular in shape.
4. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 3, it is characterized in that, the shape of described hemisphere jut is semisphere or Part-spherical.
5. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 4, it is characterized in that, the material of described hemisphere jut is PMMA, and one-body molded with light-passing board.
6. the PMMA light guide plate with one side microstructure and bright dipping micro-prism structure as described in any one of claim 1-5, it is characterized in that, the thickness of described light-passing board is at 0.5 ~ 3.0mm.
7. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 6, it is characterized in that, when described light-passing board thickness is 0.5mm, the degree of depth of described V-groove is at 4 ~ 6 μm, and span is at 50 ~ 65 μm.
8. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 6, it is characterized in that, when described light-passing board thickness is 1.0mm, the degree of depth of described V-groove is at 7 ~ 8 μm, and span is at 50 ~ 65 μm.
9. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 6, it is characterized in that, when described light-passing board thickness is 2.0mm, the degree of depth of described V-groove is at 35 ~ 40 μm, and span is at 150 ~ 165 μm.
10. have the PMMA light guide plate of one side microstructure and bright dipping micro-prism structure as claimed in claim 6, it is characterized in that, when described light-passing board thickness is 3.0mm, the degree of depth of described V-groove is at 70 ~ 75 μm, and span is at 300 ~ 370 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510777125.XA CN105353445A (en) | 2015-11-13 | 2015-11-13 | PMMA light guide plate with single-side microstructure and light output micro prism structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510777125.XA CN105353445A (en) | 2015-11-13 | 2015-11-13 | PMMA light guide plate with single-side microstructure and light output micro prism structure |
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| CN105353445A true CN105353445A (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510777125.XA Pending CN105353445A (en) | 2015-11-13 | 2015-11-13 | PMMA light guide plate with single-side microstructure and light output micro prism structure |
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