CN102478217B - Light guide panel and backlight module - Google Patents
Light guide panel and backlight module Download PDFInfo
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- CN102478217B CN102478217B CN 201010564049 CN201010564049A CN102478217B CN 102478217 B CN102478217 B CN 102478217B CN 201010564049 CN201010564049 CN 201010564049 CN 201010564049 A CN201010564049 A CN 201010564049A CN 102478217 B CN102478217 B CN 102478217B
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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 light guide plate (light guide plate) and module backlight (backlight module).
[background technology]
Module backlight generally includes light guide plate, and the effect of light guide plate 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 homogeneity of panel luminance, so that the pointolite in the module backlight or line source are converted to area source and offer display panels.Specifically, after light beam enters light guide plate, because light conducting plate body is that printing opacity is limpid, can not cause deviation and the scattering of light beam, so light beam can be followed the mode of total reflection to be passed to outside the light guide plate or by the microstructure on light guide plate surface and be destroyed total reflection with the generation deviation, and then is passed to outside the light guide plate.
Generally speaking, by the controlled size of making light quantity of density of adjustment microstructure, and then bright dipping briliancy and the uniformity coefficient of controlled light guide plate processed.The making of microstructure for example can adopt ink-jet, printing or etched mode to make, wherein because the nozzle of general ink gun is the array arrangement, so Chang Wufa compares with other processing procedure on maximal density.Utilizing ink-jetting style to make in the process of microstructure, if ink-jet point is too close each other before uncured, easily causes being connected with each other of adjacent ink-jet point, and cause the flaw of microstructure.In addition, because ink-jet point is the protruding spherical of regularity, the consistance height, and lack scattering power and enough bright dipping abilities, thus, just can make the flaw of light guide plate to reach the atomizing result by local scattering.
Fig. 1 is the synoptic diagram of existing module backlight.Please refer to Fig. 1, existing module 100 backlight comprises a light-emitting component 110, a light guide plate 120 and a reflector element 130.Light-emitting component 110 is used for sending a light beam L1.It is other that light guide plate 120 is disposed at light-emitting component 110, and be used for guiding light beam L1.Light guide plate 120 comprises a transparent substrates 122 and a plurality of optical microstructures 124.
As shown in Figure 1, when light beam L1 ran into optical microstructures 124 on the surperficial S2 of light guide plate 120, optical microstructures 124 can destroy the total reflection of light guide plate 120, thereby made light beam L1 penetrate the surperficial S1 of light guide plate 120 and be passed to outside the module 100 backlight.Yet another light beam L2 that light-emitting component 110 sends directly is passed to the surperficial S4 of light guide plate 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 by 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 microstructure in light guide plate.On the other hand, TaiWan, China patent No. M314346 and M299866, U.S. Patent Publication No. 20030210222, Chinese patent publication number 101078836 and China Patent No. 1260583 also disclose several structures about light guide plate.
[summary of the invention]
The invention provides a kind of light guide plate, it has good light service efficiency.
The invention provides a kind of module backlight, it can provide uniformity coefficient higher area source.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or partly or entirely purpose or other purposes, one of the present invention embodiment proposes a kind of light guide plate.Light guide plate is used for guiding one light-emitting component and sends a light beam.Light guide plate 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 is relative with first surface.Incidence surface connects first surface and second surface, and wherein light beam enters in the transparent substrates by 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 light guide plate is to smaller or equal to 80% more than or equal to 0.4%.
Described light guide plate, wherein those optical microstructures are to utilize the mode of ink-jet to be made on this second surface.
Described light guide plate, wherein those optical microstructures near the number density at this light-emitting component place less than those optical microstructures in the number density away from this light-emitting component place.
Described light guide plate, wherein the haze value of this transparent substrates is being more than or equal to 0.4% to smaller or equal to 30% near the scope at 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 light guide plate, wherein this light beam is suitable for being passed to outside this transparent substrates via this first surface.
Described light guide plate, wherein this transparent substrates is a flat substrate.
Another embodiment of the present invention also proposes a kind of module backlight, and it comprises one first light-emitting component and a light guide plate.First light-emitting component is used for sending a light beam.Light guide plate is disposed at by first light-emitting component, and in order to guide light beam.Light guide plate 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 enters in the transparent substrates by 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 the number density away from this first light-emitting component place.
Described module backlight, wherein the haze value of this light guide plate is being more than or equal to 0.4% to smaller or equal to 30% near the scope at this first light-emitting component place, and the haze value of this light guide plate 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 passed to outside this transparent substrates by this first surface.
Described module backlight wherein also 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 also comprises one second light-emitting component, and this transparent substrates also has 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 also comprises at least one blooming piece.
In sum, embodiments of the invention can reach the one at least of following advantage or effect.The light guide plate of embodiments of the invention has adopted diffusion particle to make light beam scattering effectively, to promote the light service efficiency of light guide plate.Therefore, adopt the module backlight of this light guide plate can provide uniformity coefficient higher area source.
[description of drawings]
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Fig. 1 is the synoptic diagram of existing module backlight.
Fig. 2 is the synoptic diagram of the module backlight of first embodiment of the invention.
Fig. 3 A is the rising angle distribution plan of the light guide plate of Fig. 2.
Fig. 3 B is the bright dipping distribution plan of the light guide plate of Fig. 2.
Fig. 4 is the synoptic diagram of the module backlight of second embodiment of the invention.
Fig. 5 is the synoptic diagram of the module backlight of third embodiment of the invention.
Fig. 6 is the synoptic diagram 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 ': light guide plate
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
[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 present.The direction term of mentioning 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 illustrate not to be to limit the present invention.
First embodiment
Fig. 2 is the synoptic diagram of the module backlight of first embodiment of the invention.Please refer to Fig. 2, the module backlight 200 of present embodiment comprises a light-emitting component 210 and a light guide plate 220.Light-emitting component 210 is used for sending a light beam L3.It is other that light guide plate 220 is disposed at light-emitting component 210, and be used for guiding light beam L3.In the present embodiment, light-emitting component 210 for example be a light emitting diode (light emitting diode, LED).Light guide plate 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 enters in the transparent substrates 222 by 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 light guide plate 220 (Haze value) is to smaller or equal to 80% more than or equal to 0.4%.Wherein the haze value of light guide plate 220 is to adopt the haze meter (model NDH5000) of NIPPON DENSHOKU company to measure and get.Generally speaking, the scattering power of the more high representative light guide plate 220 of haze value is more good, and then more good screening flaw effect can be arranged.The interpolation of diffusion particle 226 can promote the scattering power of light guide plate 220, and reduces the transparency of light guide plate 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 is conducive to the slimming of module 200 backlight.Furthermore, using ink-jetting style to make in the process of optical microstructures 224, by mobile ink gun or transparent substrates 222, just can be in regular turn produce the optical microstructures 224 that different size or spacing do not wait at transparent substrates 222.As shown in Figure 2, the design of layouting of unequal interval is taked in the configuration of optical microstructures 224.Specifically, the optical microstructures 224 of present embodiment near the number density at light-emitting component 210 places less than optical microstructures 224 in the 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 nozzle ink jet or the not ink-jet of control ink gun.For instance, in the time of near ink gun moves to the upward close light-emitting component 210 of surperficial S2, the several spaced points of the every movement of nozzle that can control ink gun just stop ink-jet and form 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, then control the nozzle of ink gun and carry out the action of ink-jet in each spaced points to form the higher optical microstructures 224 of number density at surperficial S2.On the other hand, optical microstructures 224 for example is 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 light guide plate 220 is being more than or equal to 0.4% to smaller or equal to 30% near the scope at light-emitting component 210 places, and the haze value of light guide plate 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 light guide plate 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 area source can be provided.
In addition, the module backlight 200 of present embodiment also 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 exiting surface to the light beam L4 that light-emitting component 210 sends in transparent substrates 222.When light beam L4 ran into 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 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 the fabrication techniques of utilizing ink-jet to layout, light guide plate 220 does not have the problem of the whole luminous exitance deficiency that causes because of optical microstructures 224 cloth dot density deficiencies.In addition, also can be subjected to the scattering process of diffusion particle 226 because of each tropism's light beam (for example light beam L3), also become better so light guide plate 220 hides the flaw.In the present embodiment, diffusion particle 226 for example is silicon dioxide (SiO
2), titania (TiO
2) or have the resene 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 uniformity coefficient and the briliancy of bright dipping.
In addition, the module backlight 200 of present embodiment also 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 light guide plate 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 preferable briliancy and uniformity coefficient.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 light guide plate 220 and light guide plate 220.Furthermore, the light beam L3 of the transparent substrates 222 by 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 integral brightness and the uniformity coefficient of module 200 backlight by arrange in pairs or groups other blooming piece of the transparent substrates 222 that contains diffusion particle 226.
Fig. 3 A is the rising angle distribution plan of the light guide plate 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 light guide plate 220.Specifically, 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 gauge point of rising angle is light guide plate 220 near the surperficial S1 centre of the surperficial S1 place of light-emitting components 210, light guide plate 220 and the light guide plate 220 surperficial S1 place away from light-emitting component 210.
In Fig. 3 A, the bright dipping that curve C 1 represents when not adding diffusion particle 226 in the transparent substrates 222 distributes, the bright dipping distribution when curve C 2～C4 represent transparent substrates 222 and contains diffusion particle 226.Specifically, curve C 2 corresponding light guide plate 220 near the haze value at light-emitting component 210 places less than 0.4% and light guide plate 220 away from the haze value at light-emitting component 210 places less than 12% bright dipping distribution range.Curve C 3 corresponding light guide plate 220 near the haze value at light-emitting component 210 places greater than 30% and light guide plate 220 distributing greater than 80% bright dipping away from the haze value at light-emitting component 210 places.In addition, curve C 4 corresponding light guide plate 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 light guide plate 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.
As shown in Figure 3A, 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 corresponding 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, make by adding diffusion particle 226 light guide plate 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 light guide plate 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 angles of 55 degree～75 degree from light guide plate 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 integral brightness and the uniformity coefficient of module 200 backlight.In addition, the curve C 4 of regional 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 light guide plate 220 near the haze value at light-emitting component 210 places greater than 30% and light guide plate 220 away from the haze value at light-emitting component 210 places greater than 80%, can make too much light beam with the angle outgoing of-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 light guide plate 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 plan of the light guide plate 220 of Fig. 2, wherein the corresponding light guide plate 220 of transverse axis from the position of close light-emitting component 210 to the position away from light-emitting component 210, be the corresponding light guide plate 220 of transverse axis from the position of close incidence surface S3 to the 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 that light guide plate 220 comprises optical microstructures 224 but bright dipping when not adding diffusion particle 226 distributes.Curve D 2～D3 represents that light guide plate 220 comprises diffusion particle 226 but bright dipping when optical microstructures 224 is not set distributes.Bright dipping when curve D 4 represents light guide plate 220 and comprises diffusion particle 226 and optical microstructures 224 distributes.Can be found 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 light guide plate 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 light guide plate 220 distributes less than 0.4% bright dipping, and the haze value of curve D 3 corresponding light guide plate 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 light guide plate 220 also rises as curve D 2.Yet, it should be noted, shown in curve D 3, when the haze value of light guide plate 220 greater than 30% the time, the briliancy ratio of the regional E the corresponding light guide plate 220 incidence surface S3 near is also high than the briliancy ratio of other positions of light guide plate 220.Therefore, when light guide plate 220 comprises diffusion particle 226 but optical microstructures 224 is not set, when the haze value of light guide plate 220 greater than 30% the time, can make light guide plate 220 near the bright dizzy phenomenon of incidence surface S3 places generations.
By Fig. 3 A and Fig. 3 B as can be known, the module backlight 200 of the embodiment of Fig. 2 can provide evenly and the high area source of briliancy because adding diffusion particle 226.In the present embodiment, when haze value less than 0.4% the time, the problem of briliancy deficiency can light guide plate 220 be arranged, and when haze value greater than 80% the time, then light guide plate 220 close incidence surface S3 places have bright dizzy phenomenon again.Therefore, when light guide plate 220 comprises diffusion particle 226 and optical microstructures 224, and the haze value that makes light guide plate 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 synoptic diagram 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 both are main difference: 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 implementation in the narration by the embodiment of Fig. 2～Fig. 3 B, therefore repeats no more.
The 3rd embodiment
Fig. 5 is the synoptic diagram 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 also comprises a light-emitting component 280, and transparent substrates 222 ' also has 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 used for sending light beam L5, and because transparent substrates 222 ' inner interpolation diffusion particle 226, so light beam L5 can be because 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 implementation in the narration by the embodiment of Fig. 2～Fig. 3 B, therefore repeats no more.
The 4th embodiment
Fig. 6 is the synoptic diagram 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 both are main difference: the optical microstructures 224 of module 500 backlight is to be disposed on the surperficial S1.Because the module backlight 500 of present embodiment can be obtained enough teachings, suggestion and implementation in the narration by the embodiment of Fig. 2～Fig. 3 B and Fig. 5, so repeats no more.
In sum, embodiments of the invention can reach the one at least of following advantage or effect.The light guide plate employing diffusion particle of embodiments of the invention changes the bang path from the light beam of the incidence surface of light guide plate, and make light beam scattering effectively, promoting the light service efficiency of light guide plate, so adopt the module backlight of this light guide plate can provide uniformity coefficient and briliancy higher area source.In addition, because the scope of the haze value of light guide plate is to smaller or equal to 80%, so light guide plate has good screening flaw effect more than or equal to 0.4%.
The above, only be the preferred embodiments of the present invention, can not limit scope of the invention process with this, i.e. all simple equivalent variations of doing according to claims of the present invention and description change with modification, all still belong in the scope of patent covering of the present invention.In addition, arbitrary embodiment of the present invention or claim must not reached the disclosed whole purposes of the present invention or advantage or the characteristics of realizing.In addition, summary and denomination of invention only are the usefulness of the sharp Wen spare Inspection of auxiliary Zhuan rope, are not to limit interest field of the present invention.
Claims (13)
1. a light guide plate is used for guiding one light-emitting component and sends a light beam, and described light guide plate comprises:
One transparent substrates, described transparent substrates has:
One first surface;
One second surface is relative with described first surface; And
One incidence surface connects described first surface and described second surface, and wherein said light beam is logical
Crossing described incidence surface enters in the described transparent substrates;
A plurality of optical microstructures are disposed on the described second surface; And
A plurality of diffusion particles, be distributed in the described transparent substrates, and the scope of the haze value of described light guide plate is to smaller or equal to 80% more than or equal to 0.4%, the haze value of described transparent substrates is being more than or equal to 0.4% to smaller or equal to 30% near the scope at described light-emitting component place, and the haze value of described transparent substrates is to smaller or equal to 80% more than or equal to 12% in the scope away from described light-emitting component place.
2. light guide plate as claimed in claim 1 is characterized in that described optical microstructures is to utilize the mode of ink-jet to be produced on the described second surface.
3. light guide plate as claimed in claim 1, it is characterized in that described optical microstructures near the number density at described light-emitting component place less than described optical microstructures in the number density away from described light-emitting component place.
4. light guide plate as claimed in claim 1 is characterized in that described light beam is passed to outside the described transparent substrates by described first surface.
5. light guide plate as claimed in claim 1 is characterized in that described transparent substrates is a flat substrate.
6. a module backlight comprises
One first light-emitting component is used for sending a light beam; And
One light guide plate is disposed at by described first light-emitting component, and is used for this light beam of guiding, and described light guide plate comprises:
One transparent substrates, the second surface with the described relatively first surface of a first surface, is connected first incidence surface of described first surface and described second surface with one, and wherein said light beam enters in the described transparent substrates by described first incidence surface;
A plurality of optical microstructures are disposed on the described second surface; And
A plurality of diffusion particles, be distributed in the described transparent substrates, and the scope of the haze value of described light guide plate is to smaller or equal to 80% more than or equal to 0.4%, the haze value of described light guide plate is being more than or equal to 0.4% to smaller or equal to 30% near the scope at the described first light-emitting component place, and the haze value of described light guide plate is to smaller or equal to 80% more than or equal to 12% in the scope away from the described first light-emitting component place.
7. module backlight as claimed in claim 6 is characterized in that described optical microstructures is to utilize the mode of ink-jet to be made on the described second surface.
8. module backlight as claimed in claim 6, it is characterized in that described optical microstructures near the number density at the described first light-emitting component place less than described optical microstructures in the number density away from the described first light-emitting component place.
9. module backlight as claimed in claim 6 is characterized in that described light beam is passed to outside the described transparent substrates by described first surface.
10. module backlight as claimed in claim 9 is characterized in that described module backlight also comprises a reflector element, be disposed at a side of the described second surface of described transparent substrates, and described optical microstructures is between described second surface and described reflector element.
11. module backlight as claimed in claim 6 is characterized in that described transparent substrates is a flat substrate.
12. module backlight as claimed in claim 6, it is characterized in that described module backlight also comprises one second light-emitting component, and described transparent substrates also has second incidence surface with respect to described first incidence surface, and wherein said second light-emitting component is disposed at by described second incidence surface.
13. module backlight as claimed in claim 6 is characterized in that described module backlight also 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 CN102478217A (en) | 2012-05-30 |
| CN102478217B true CN102478217B (en) | 2013-08-28 |
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| CN 201010564049 Expired - Fee Related CN102478217B (en) | 2010-11-26 | 2010-11-26 | Light guide panel and backlight module |
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| CN103716614B (en) * | 2013-12-20 | 2016-01-13 | 合肥京东方光电科技有限公司 | A kind of display unit |
| TW201643485A (en) * | 2015-06-01 | 2016-12-16 | 中強光電股份有限公司 | 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 |
| CN108241827A (en) * | 2016-12-23 | 2018-07-03 | 创智能科技股份有限公司 | Biological identification device |
| 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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