CN102478217A - Light guide panel and backlight module - Google Patents
Light guide panel and backlight module Download PDFInfo
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- CN102478217A CN102478217A CN2010105640491A CN201010564049A CN102478217A CN 102478217 A CN102478217 A CN 102478217A CN 2010105640491 A CN2010105640491 A CN 2010105640491A CN 201010564049 A CN201010564049 A CN 201010564049A CN 102478217 A CN102478217 A CN 102478217A
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Abstract
The invention provides a light guide panel and a backlight module. The light guide panel is suitable for guiding a light emitting element to emit a light beam. The light guide panel comprises a non-lighttight base plate, a plurality of optical microstructures and a plurality of diffusion particles, wherein the non-lighttight base plate is provided with a first surface, a second surface and a light incident plane; the second surface is opposite the first surface; the light incident plane is connected with the first surface and the second surface; the light beam is suitable for entering the non-lighttight base plate via the light incident plane; the optical microstructures are arranged on the second surface; the diffusion particles are distributed in the non-lighttight base plate; and the haze degree of the light guide panel is greater than or equal to 0.4% and less than or equal to 80%. The invention also provides a backlight module using the light guide panel.
Description
[technical field]
The invention relates to a kind of optical element and light source module, and particularly relevant for a kind of LGP (light guide plate) and module backlight (backlight module).
[background technology]
Module backlight generally includes LGP; And the effect of LGP is to guide the scattering direction of the light beam that light source produces; Be used for improving the briliancy of panel, and guarantee the uniformity of panel luminance, so that spot light in the module backlight or line source are converted to area source and offer display panels.In detail; After light beam gets into LGP; Because light conducting plate body is that printing opacity is limpid; Can not cause the deviation and the scattering of light beam, destroy total reflection with the generation deviation so light beam can follow the mode of total reflection to be passed to outside the LGP or by the micro-structural on LGP surface, and then be passed to outside the LGP.
Generally speaking, by the controlled size of making light quantity of density of adjustment micro-structural, and then the bright dipping briliancy and the uniformity of controlled system LGP.The making of micro-structural for example can adopt ink-jet, printing or etched mode to make, wherein because the nozzle of general ink gun is an array arranges, so Chang Wufa and other processing procedure are compared on maximal density.Utilizing ink-jetting style to make in the process of micro-structural, if ink-jet point before uncured each other too near, be prone to cause being connected with each other of adjacent ink-jet point, and cause the flaw of micro-structural.In addition, because ink-jet point is the protruding spherical of regularity, uniformity is high, and lacks scattering power and enough bright dipping abilities, thus, just can make the flaw of LGP can't reach the atomizing result by local scatter.
Fig. 1 is the sketch map of existing module backlight.Please with reference to Fig. 1, existing module 100 backlight comprises a light-emitting component 110, a LGP 120 and a reflector element 130.Light-emitting component 110 is suitable for sending a light beam L1.It is other that LGP 120 is disposed at light-emitting component 110, and be suitable for guiding light beam L1.LGP 120 comprises a transparent substrates 122 and a plurality of optical microstructures 124.
As shown in Figure 1, when light beam L1 ran into the optical microstructures 124 on the surperficial S2 of LGP 120, optical microstructures 124 can destroy the total reflection of LGPs 120, thereby made light beam L1 penetrate the surperficial S1 of LGP 120 and be passed to outside the module 100 backlight.Yet another light beam L2 system that light-emitting component 110 sends directly is passed to the surperficial S4 of LGP 120, can bump in transparent substrates 122 inside hardly.Therefore, in existing module 100 backlight, the light beams that are passed to outside the transparent substrates 122 via surperficial S1 just can reduce, and cause the whole bright dipping scarce capacity of module 100 backlight.
TaiWan, China patent No. I287135 and TaiWan, China patent publication No. 200732785 disclose respectively utilizes ink-jetting style to make the technology of micro-structural in LGP.On the other hand, TaiWan, China patent No. M314346 and M299866, U.S. Patent Publication 20030210222, Chinese patent publication number 101078836 and Chinese patent numbers 1260583 also discloses several kinds of structures about LGP.
[summary of the invention]
The present invention provides a kind of LGP, and it has good light service efficiency.
The present invention provides a kind of module backlight, and it can provide the uniformity higher area source.
Other purposes of the present invention and advantage can further be understood from the technical characterictic that the present invention disclosed.
For reaching one of above-mentioned or partly or all purposes or other purposes, one of the present invention embodiment proposes a kind of LGP.LGP is suitable for guiding a light-emitting component and one of sends light beam.LGP comprises a transparent substrates, a plurality of optical microstructures and a plurality of diffusion particle.Transparent substrates has a first surface, a second surface and an incidence surface.Second surface and first surface are relative.Incidence surface connects first surface and second surface, and wherein light beam gets in the transparent substrates via incidence surface.Optical microstructures is disposed on the second surface.Diffusion particle is distributed in the transparent substrates, and the scope of the haze value of LGP is to smaller or equal to 80% more than or equal to 0.4%.
Described LGP, wherein those optical microstructures are to utilize the mode of ink-jet to be made on this second surface.
Described LGP, wherein those optical microstructures near the number density at this light-emitting component place less than those optical microstructures in number density away from this light-emitting component place.
Described LGP; Wherein the haze value of this transparent substrates is more than or equal to 0.4% to smaller or equal to 30% in the scope near this light-emitting component place, and the haze value of this transparent substrates is to smaller or equal to 80% more than or equal to 12% in the scope away from this light-emitting component place.
Described LGP, wherein this light beam is suitable for being passed to outside this transparent substrates via this first surface.
Described LGP, wherein this transparent substrates is a flat substrate.
Another embodiment of the present invention more proposes a kind of module backlight, and it comprises one first light-emitting component and a LGP.First light-emitting component is suitable for sending a light beam.LGP is disposed at by first light-emitting component, and is suitable for guiding light beam.LGP comprises a transparent substrates, above-mentioned optical microstructures and above-mentioned diffusion particle.Transparent substrates has above-mentioned first surface, above-mentioned second surface is connected first incidence surface of first surface and second surface with one.Light beam is suitable for getting in the transparent substrates via first incidence surface.
Described module backlight, wherein those optical microstructures are to utilize the mode of ink-jet to be made on this second surface.
Described module backlight, wherein those optical microstructures near the number density at this first light-emitting component place less than those optical microstructures in number density away from this first light-emitting component place.
Described module backlight; Wherein the haze value of this LGP is more than or equal to 0.4% to smaller or equal to 30% in the scope near this first light-emitting component place, and the haze value of this LGP is to smaller or equal to 80% more than or equal to 12% in the scope away from this first light-emitting component place.
Described module backlight, wherein this this light beam is suitable for being passed to outside this transparent substrates via this first surface.
Described module backlight wherein more comprises a reflector element, is disposed at a side of this second surface of this transparent substrates, and those optical microstructures are between this second surface and this reflector element.
Described module backlight, wherein this transparent substrates is a flat substrate.
Described module backlight wherein more comprises one second light-emitting component, and this transparent substrates has more second incidence surface with respect to this first incidence surface, and wherein this second light-emitting component is disposed at by this second incidence surface.
Described module backlight wherein more comprises at least one blooming piece.
Based on above-mentioned, embodiments of the invention can reach the one of which at least of advantage or effect.The LGP of embodiments of the invention has adopted diffusion particle to make light beam scattering effectively, to promote the light service efficiency of LGP.Therefore, adopt the module backlight of this LGP can provide the uniformity higher area source.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
[description of drawings]
Fig. 1 is the sketch map of existing module backlight.
Fig. 2 is the sketch map of the module backlight of first embodiment of the invention.
Fig. 3 A is the rising angle distribution map of the LGP of Fig. 2.
Fig. 3 B is the bright dipping distribution map of the LGP of Fig. 2.
Fig. 4 is the sketch map of the module backlight of second embodiment of the invention.
Fig. 5 is the sketch map of the module backlight of third embodiment of the invention.
Fig. 6 is the sketch map of the module backlight of fourth embodiment of the invention.
100,200,300,400,500: module backlight
110,210,280: light-emitting component
120,220,220 ': LGP
122,222,222 ': transparent substrates
124,224: optical microstructures
126,226: diffusion particle
130,230: reflector element
L1 ~ L5: light beam
S1, S2, S4: surface
S3, S4 ': incidence surface
C1 ~ C4, D1 ~ D4: curve
A, B, E: zone
N1, N2: normal direction
[specific embodiment]
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to one of graphic preferred embodiment, can clearly appear.The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to annexed drawings.Therefore, the direction term of use is to be used for explaining not to be to be used for limiting the present invention.
First embodiment
Fig. 2 is the sketch map of the module backlight of first embodiment of the invention.Please with reference to Fig. 2, the module backlight 200 of present embodiment comprises a light-emitting component 210 and a LGP 220.Light-emitting component 210 is suitable for sending a light beam L3.It is other that LGP 220 is disposed at light-emitting component 210, and be suitable for guiding light beam L3.In the present embodiment, light-emitting component 210 for example be a light emitting diode (light emitting diode, LED).LGP 220 comprises a transparent substrates 222, a plurality of optical microstructures 224 and a plurality of diffusion particle 226.
The surperficial S2, one that transparent substrates 222 has a surperficial S1, an apparent surface S1 connects surperficial S1 and the incidence surface S3 of surperficial S2 and the surperficial S4 of a relative incidence surface S3, and wherein light beam L3 gets in the transparent substrates 222 via incidence surface S3.Transparent substrates 222 for example is a flat substrate.Optical microstructures 224 is disposed on the surperficial S2.Diffusion particle 226 is distributed in the transparent substrates 222, and wherein the size of diffusion particle 226 for example is extremely smaller or equal to 30 microns more than or equal to 100 nanometers.The scope of the haze value of LGP 220 (Haze value) is to smaller or equal to 80% more than or equal to 0.4%.Wherein the haze value of LGP 220 is to adopt the haze meter (model NDH 5000) of NIPPON DENSHOKU company to measure and get.Generally speaking, the scattering power of the high more representative LGP 220 of haze value is good more, and then good more screening flaw effect can be arranged.The interpolation of diffusion particle 226 can promote the scattering power of LGP 220, and reduces the transparency of LGP 220, to reach the effect of desalination flaw.Above-mentioned flaw for example is the scratch that causes transparent substrates 222 because of processing procedure or other factors, causes can finding out from the surperficial S1 of transparent substrates 222 lines of scratch or optical microstructures 224.In addition, the measurement of haze value for example is to be measured toward the direction of surperficial S2 by the surperficial S1 of transparent substrates 222, or is measured toward the direction of surperficial S1 by the surperficial S2 of transparent substrates 222.
In the present embodiment, optical microstructures 224 is to utilize the mode of ink-jet (ink jet) to be made on the surperficial S2, producing small optical microstructures 224, and then helps the slimming of module 200 backlight.Furthermore, using ink-jetting style to make in the process of optical microstructures 224,, just can on transparent substrates 222, produce the optical microstructures 224 that different size or spacing do not wait in regular turn by mobile ink gun or transparent substrates 222.As shown in Figure 2, the design of layouting of unequal interval is taked in the configuration of optical microstructures 224.In detail, the optical microstructures 224 of present embodiment near the number density at light-emitting component 210 places less than optical microstructures 224 in number density away from light-emitting component 210 places.Generally speaking, the nozzle of ink gun system arranges with array way, and the distance between nozzle and the nozzle is fixed to one another, so if will form the optical microstructures 224 of density unevenness, be to reach by the nozzle ink jet or the not ink-jet of control ink gun.For instance, when ink gun move to surperficial S2 go up near light-emitting component 210 near the time, the nozzle that can control ink gun whenever moves several spaced points just to be stopped ink-jet and forms the lower optical microstructures 224 of number density to go up in surperficial S2.Otherwise, when ink gun move to surperficial S2 go up away from light-emitting component 210 near the time, the nozzle of then controlling ink gun is all carried out ink-jet in each spaced points action forms the higher optical microstructures 224 of number density to go up in surperficial S2.On the other hand, optical microstructures 224 for example is a salient point, and the size of salient point for example is that the number that drips that sees through printing ink is controlled.
In addition, the haze value of LGP 220 is more than or equal to 0.4% to smaller or equal to 30% in the scope near light-emitting component 210 places, and the haze value of LGP 220 is to smaller or equal to 80% more than or equal to 12% in the scope away from light-emitting component 210 places.Because the haze value of the LGP 220 of present embodiment is different with scope away from the haze value at light-emitting component 210 places near the scope at light-emitting component 210 places, so uniform surface light source can be provided.
In addition, the module backlight 200 of present embodiment more comprises a reflector element 230.Reflector element 230 is disposed at the side of the surperficial S2 of transparent substrates 222, and optical microstructures 224 is between surperficial S2 and reflector element 230.Reflector element 230 for example is a reflector plate or a reflectance coating, and reflector plate for example is white reflection sheet or silver-colored reflector plate.Reflector element 230 can improve the briliancy of module 200 backlight.
As shown in Figure 2, through meeting is outside surperficial S1 is passed to transparent substrates 222 after the total reflection several times, wherein surperficial S1 for example is an exiting surface to the light beam L4 that light-emitting component 210 is sent in transparent substrates 222.When light beam L4 ran into the optical microstructures 224 on the surperficial S2, optical microstructures 224 can destroy total reflections, thereby made light beam L4 penetrate surperficial S1 and be passed to outside the module 200 backlight.
It should be noted that because transparent substrates 222 is inner and add diffusion particles 226, so light beam L3 can be because of colliding diffusion particle 226, and the change travel track, and then directly be passed to outside the transparent substrates 222 via surperficial S1.Thus, by the interpolation of diffusion particle 226, light beam L3 can be ahead of time by the surperficial S1 outgoing of transparent substrates 222, and then promote the briliancy of module 200 backlight.In other words, though the optical microstructures 224 of present embodiment is a fabrication techniques of utilizing ink-jet to layout, LGP 220 does not have the not enough problem of whole luminous exitance that is caused because of optical microstructures 224 cloth dot densities are not enough.In addition, also can receive the scattering process of diffusion particle 226, also improve so LGP 220 hides flaw property because of each tropism's light beam (for example light beam L3).In the present embodiment, diffusion particle 226 for example is silica (SiO
2), titanium dioxide (TiO
2) or have the resinae of different refractivity.In brief, diffusion particle 226 be added with the scattering that is beneficial to light beam (for example light beam L3), and then increase the uniformity and the briliancy of bright dipping.
In addition, the module backlight 200 of present embodiment more comprises at least one blooming piece 240, and wherein blooming piece 240 for example is diffusion sheet.In addition; Module 200 backlight also can comprise blooming piece 250,260 and 270; And blooming piece 250,260 and 270 for example be respectively prismatic lens and a reflecting type polarizing brightness enhancement film on the prismatic lens, (dual brightness enhancement film, DBEF).As shown in Figure 2; Light beam L3 by diffusion particle 226 scatterings after and for example be 55 degree～75 degree from the rising angle θ 1 of the surperficial S1 outgoing of LGP 220; The scope of this rising angle θ 1 is with other blooming piece collocation the time; Can make light beam L3 reach the effect of a bright dipping, and then produce the preferable briliancy and the uniformity.In the present embodiment, angle θ 1 for by after diffusion particle 226 scatterings from the angle between the normal direction N1 of the light beam L3 of the surperficial S1 outgoing of LGP 220 and LGP 220.Furthermore, the light beam L3 of the transparent substrates 222 through containing diffusion particle 226, through behind the blooming piece 240, can be with less angle θ 2 outgoing, and then promote the integral brightness of module 200 backlight.In the present embodiment, angle θ 2 is for through the angle between the normal direction N2 of the light beam L3 of blooming piece 240 back outgoing and blooming piece 240.Wherein angle θ 2 for example is 15 degree～45 degree, but the present invention is not subject to this.In brief, present embodiment can effectively promote the integral brightness and the uniformity of module 200 backlight by arrange in pairs or groups other blooming piece of the transparent substrates that contains diffusion particle 226 222.
Fig. 3 A is the rising angle distribution map of the LGP 220 of Fig. 2, and wherein the longitudinal axis of Fig. 3 A and transverse axis are respectively briliancy ratio and rising angle, and-90 degree are to the visual angle of 90 degree for the surperficial S1 of LGP 220.In detail, present embodiment is defined as 0 degree with the normal direction N1 of surperficial S1, and parallel surfaces S1 and the direction of pointing to light-emitting component 210 are defined as-90 degree, and parallel surfaces S1 and refer to be defined as 90 degree from the direction of light-emitting component 210.In addition, the measuring point of rising angle is a LGP 220 near the surperficial S1 centre of the surperficial S1 place of light-emitting component 210, LGP 220 and the LGP 220 surperficial S1 place away from light-emitting component 210.
In Fig. 3 A, on behalf of the bright dipping when not adding diffusion particle 226 in the transparent substrates 222, curve C 1 distribute, and the bright dipping when on behalf of transparent substrates 222, curve C 2～C4 contain diffusion particle 226 distributes.In detail, curve C 2 corresponding LGPs 220 near the haze value at light-emitting component 210 places less than 0.4% and LGP 220 away from the haze value at light-emitting component 210 places less than 12% bright dipping distribution.Curve C 3 corresponding LGPs 220 near the haze value at light-emitting component 210 places greater than 30% and LGP 220 distributing greater than 80% bright dipping away from the haze value at light-emitting component 210 places.In addition, curve C 4 corresponding LGPs 220 near the haze value at light-emitting component 210 places more than or equal to 0.4% to smaller or equal to 30%, and LGP 220 is distributing to the bright dipping smaller or equal to 80% more than or equal to 12% away from the haze value at light-emitting component 210 places.
Shown in Fig. 3 A, in regional A, the briliancy ratio of curve C 2, C4, C3 all is higher than the briliancy ratio of curve C 1, and wherein the curve C 4 pairing rising angles of regional A for example are the rising angle θ 1 of Fig. 2, and its scope for example is 55 degree～75 degree.Furthermore; Borrowing add diffusion particle 226 and make LGP 220 near the haze value at light-emitting component 210 places more than or equal to 0.4% to smaller or equal to 30%; And LGP 220 away from the haze value at light-emitting component 210 places more than or equal to 12% to smaller or equal to 80%, can make more light beam L3 with the angle of 55 degree～75 degree from LGP 220 outgoing.As previously mentioned, this angular range can cooperate other blooming piece, and produces the effect of a bright dipping, and then effectively promotes the integral brightness and the uniformity of module 200 backlight.In addition, the curve C 4 of area B is also come smoothly than curve C 1 with C2.
Yet; It should be noted; Shown in curve C 3; When transparent substrates 222 add too much diffusion particles 226 and make LGP 220 near the haze value at light-emitting component 210 places greater than 30% and LGP 220 away from the haze value at light-emitting component 210 places greater than 80%, can make of the angle outgoing of too much light beam with-90 degree～0 degree.Because above-mentioned angular range (90 degree～0 degree) is helpless to cooperate a bright dipping of other blooming pieces, so can't effectively promote the light service efficiency.Therefore, from the above, the scope of the haze value of LGP 220 be with more than or equal to 0.4% to smaller or equal to 80% for preferable (corresponding curve C 4).
Fig. 3 B is the bright dipping distribution map of the LGP 220 of Fig. 2; Wherein the corresponding LGP 220 of transverse axis Zi near the position of light-emitting component 210 to position away from light-emitting component 210; That is the corresponding LGP 220 of transverse axis Zi near the position of incidence surface S3 to position away from incidence surface S3, and the longitudinal axis is the briliancy ratio of these positions.In Fig. 3 B, curve D 1 represents LGP 220 to comprise optical microstructures 224 but bright dipping when not adding diffusion particle 226 distributes.Curve D 2～D3 represents LGP 220 to comprise diffusion particle 226 but bright dipping when optical microstructures 224 is not set distributes.Bright dipping when on behalf of LGP 220, curve D 4 comprise diffusion particle 226 and optical microstructures 224 distributes.Can find out obviously that by Fig. 3 B the briliancy ratio of curve D 4 is greater than the briliancy ratio of curve D 1, D2 and D3.In other words, the LGP 220 that comprises diffusion particle 226 and optical microstructures 224 helps the lifting of bright dipping briliancy really.
In addition, the haze value of curve D 2 corresponding LGPs 220 distributes less than 0.4% bright dipping, and the haze value of curve D 3 corresponding LGPs 220 is greater than 30% bright dipping distribution.With shown in the D3, along with the increase of the concentration of diffusion particle 226, the integral brightness ratio of LGP 220 also rises like curve D 2.Yet, it should be noted, shown in curve D 3, when the haze value of LGP 220 greater than 30% the time, near the briliancy ratio of the area E the corresponding LGP 220 incidence surface S3 is also high than the briliancy ratio of other positions of LGP 220.Therefore, when LGP 220 comprises diffusion particle 226 but optical microstructures 224 is not set, when the haze value of LGP 220 greater than 30% the time, can make LGP 220 produce bright dizzy phenomenon near incidence surface S3 place.
Can know that by Fig. 3 A and Fig. 3 B the module backlight 200 of the embodiment of Fig. 2 can provide evenly and the high area source of briliancy because of adding diffusion particle 226.In the present embodiment, when haze value less than 0.4% the time, can the not enough problem of briliancy be arranged LGP 220, and when haze value greater than 80% the time, then LGP 220 has bright dizzy phenomenon again near incidence surface S3 place.Therefore, when LGP 220 comprises diffusion particle 226 and optical microstructures 224, and the haze value that makes LGP 220 is more than or equal to 0.4% to smaller or equal to 80% scope the time, and module 200 backlight can provide evenly and the high area source of briliancy.
Second embodiment
Fig. 4 is the sketch map of the module backlight of second embodiment of the invention.As shown in Figure 4, module 300 backlight is similar with the module backlight 200 of Fig. 2, and only the two main difference part is: the optical microstructures 224 of module 300 backlight is to be disposed on the surperficial S1.Because the module backlight 300 of present embodiment can be obtained enough teachings, suggestion and implement explanation in the narration by the embodiment of Fig. 2～Fig. 3 B, so repeats no more.
The 3rd embodiment
Fig. 5 is the sketch map of the module backlight of third embodiment of the invention.As shown in Figure 5; Module 400 backlight is similar with the module backlight 200 of Fig. 2; Only the two main difference part is: module 400 backlight more comprises a light-emitting component 280; And transparent substrates 222 ' has more an incidence surface S4 ' with respect to incidence surface S3, and it is other that wherein light-emitting component 280 is disposed at incidence surface S4 '.
As shown in Figure 5; Light-emitting component 280 is suitable for sending light beam L5, and because transparent substrates 222 ' inner interpolation diffusion particle 226, so light beam L5 can be because of colliding diffusion particle 226; And the change travel track, and then directly be passed to outside the transparent substrates 222 ' via surperficial S1.Thus, by the interpolation of diffusion particle 226, light beam L5 can be ahead of time by the surperficial S1 outgoing of transparent substrates 222 ', and then promote the briliancy of module 400 backlight.Because the module backlight 400 of present embodiment can be obtained enough teachings, suggestion and implement explanation in the narration by the embodiment of Fig. 2～Fig. 3 B, so repeats no more.
The 4th embodiment
Fig. 6 is the sketch map of the module backlight of fourth embodiment of the invention.As shown in Figure 6, module 500 backlight is similar with the module backlight 400 of Fig. 5, and only the two main difference part is: the optical microstructures 224 of module 500 backlight is to be disposed on the surperficial S1.Because the module backlight 500 of present embodiment is obtained enough teachings, suggestion in can the narration by the embodiment of Fig. 2～Fig. 3 B and Fig. 5 and is implemented to explain, so repeats no more.
In sum, embodiments of the invention can reach the one of which at least of advantage or effect.The LGP employing diffusion particle of embodiments of the invention changes the bang path from the light beam of the incidence surface of LGP; And make light beam scattering effectively; To promote the light service efficiency of LGP, so adopt the module backlight of this LGP that the uniformity and the higher area source of briliancy can be provided.In addition, because the scope of the haze value of LGP is to smaller or equal to 80%, so LGP has good screening flaw effect more than or equal to 0.4%.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the technical field under any; In spirit that does not break away from the present invention and scope, when doing a little change and retouching, so the present invention's protection domain is as the criterion when looking the claim person of defining.Arbitrary embodiment of the present invention in addition or claim must not reached whole purposes or advantage or the characteristics that the present invention discloses.
Claims (15)
1. LGP is suitable for guiding a light-emitting component and one of sends light beam, and this LGP comprises:
One transparent substrates, this transparent substrates has:
One first surface;
One second surface is relative with this first surface; And
One incidence surface connects this first surface and this second surface, and wherein this light beam is suitable for getting in this transparent substrates via this incidence surface;
A plurality of optical microstructures are disposed on this second surface; And
A plurality of diffusion particles are distributed in this transparent substrates, and the scope of the haze value of this LGP is to smaller or equal to 80% more than or equal to 0.4%.
2. LGP as claimed in claim 1, wherein those optical microstructures are to utilize the mode of ink-jet to be made on this second surface.
3. LGP as claimed in claim 1, wherein those optical microstructures near the number density at this light-emitting component place less than those optical microstructures in number density away from this light-emitting component place.
4. LGP as claimed in claim 3; Wherein the haze value of this transparent substrates is more than or equal to 0.4% to smaller or equal to 30% in the scope near this light-emitting component place, and the haze value of this transparent substrates is to smaller or equal to 80% more than or equal to 12% in the scope away from this light-emitting component place.
5. LGP as claimed in claim 1, wherein this light beam is suitable for being passed to outside this transparent substrates via this first surface.
6. LGP as claimed in claim 1, wherein this transparent substrates is a flat substrate.
7. a module backlight comprises
One first light-emitting component is suitable for sending a light beam; And
One LGP is disposed at by this first light-emitting component, and is suitable for guiding this light beam, and this LGP comprises:
One transparent substrates, the second surface with a first surface, relative this first surface is connected first incidence surface of this first surface and this second surface with one, and wherein this light beam is suitable for getting in this transparent substrates via this first incidence surface;
A plurality of optical microstructures are disposed on this second surface; And
A plurality of diffusion particles are distributed in this transparent substrates, and the haze value of this LGP
Scope is to smaller or equal to 80% more than or equal to 0.4%.
8. module backlight as claimed in claim 7, wherein those optical microstructures are to utilize the mode of ink-jet to be made on this second surface.
9. module backlight as claimed in claim 7, wherein those optical microstructures near the number density at this first light-emitting component place less than those optical microstructures in number density away from this first light-emitting component place.
10. module backlight as claimed in claim 9; Wherein the haze value of this LGP is more than or equal to 0.4% to smaller or equal to 30% in the scope near this first light-emitting component place, and the haze value of this LGP is to smaller or equal to 80% more than or equal to 12% in the scope away from this first light-emitting component place.
11. module backlight as claimed in claim 7, wherein this light beam is suitable for being passed to outside this transparent substrates via this first surface.
12. module backlight as claimed in claim 11 wherein more comprises a reflector element, is disposed at a side of this second surface of this transparent substrates, and those optical microstructures are between this second surface and this reflector element.
13. module backlight as claimed in claim 7, wherein this transparent substrates is a flat substrate.
14. module backlight as claimed in claim 7 wherein more comprises one second light-emitting component, and this transparent substrates has more second incidence surface with respect to this first incidence surface, wherein this second light-emitting component is disposed at by this second incidence surface.
15. module backlight as claimed in claim 7 wherein more comprises at least one blooming piece.
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|---|---|---|---|
| CN 201010564049 CN102478217B (en) | 2010-11-26 | 2010-11-26 | Light guide panel and backlight module |
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|---|---|---|---|
| CN 201010564049 CN102478217B (en) | 2010-11-26 | 2010-11-26 | Light guide panel and backlight module |
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| CN102478217A true CN102478217A (en) | 2012-05-30 |
| CN102478217B CN102478217B (en) | 2013-08-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015090009A1 (en) * | 2013-12-20 | 2015-06-25 | 京东方科技集团股份有限公司 | Display device |
| CN106195693A (en) * | 2015-06-01 | 2016-12-07 | 中强光电股份有限公司 | Light source module and manufacturing method thereof |
| CN107870387A (en) * | 2016-09-28 | 2018-04-03 | 福建正德光电科技有限公司 | A kind of mixing material with guide-lighting performance |
| WO2018113122A1 (en) * | 2016-12-23 | 2018-06-28 | 创智能科技股份有限公司 | Biometric identification device |
| CN109471302A (en) * | 2018-12-25 | 2019-03-15 | 中航华东光电有限公司 | A kind of bottom back lighting device with visual angle deflection |
| CN110750014A (en) * | 2019-12-03 | 2020-02-04 | 上海观池文化传播有限公司 | Novel multilayer transparent screen and control system thereof |
| CN111580308A (en) * | 2020-07-03 | 2020-08-25 | 上海天马微电子有限公司 | Backlight module and display device |
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| CN108469647A (en) * | 2018-03-03 | 2018-08-31 | 苏州茂立光电科技有限公司 | Light guide plate, backlight module with optical performance protective film and its assemble method |
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| US9900589B2 (en) | 2013-12-20 | 2018-02-20 | Boe Technology Group Co., Ltd. | Display device |
| CN106195693A (en) * | 2015-06-01 | 2016-12-07 | 中强光电股份有限公司 | Light source module and manufacturing method thereof |
| CN107870387A (en) * | 2016-09-28 | 2018-04-03 | 福建正德光电科技有限公司 | A kind of mixing material with guide-lighting performance |
| WO2018113122A1 (en) * | 2016-12-23 | 2018-06-28 | 创智能科技股份有限公司 | Biometric identification device |
| CN109471302A (en) * | 2018-12-25 | 2019-03-15 | 中航华东光电有限公司 | A kind of bottom back lighting device with visual angle deflection |
| CN110750014A (en) * | 2019-12-03 | 2020-02-04 | 上海观池文化传播有限公司 | Novel multilayer transparent screen and control system thereof |
| CN111580308A (en) * | 2020-07-03 | 2020-08-25 | 上海天马微电子有限公司 | Backlight module and display device |
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