CN105090823A - Backlight module and preparation method of backlight module - Google Patents
Backlight module and preparation method of backlight module Download PDFInfo
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- CN105090823A CN105090823A CN201510472562.0A CN201510472562A CN105090823A CN 105090823 A CN105090823 A CN 105090823A CN 201510472562 A CN201510472562 A CN 201510472562A CN 105090823 A CN105090823 A CN 105090823A
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- guide plate
- quantum dot
- light guide
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- backlight module
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module and a preparation method of the backlight module. A light guide plate comprises a light inlet surface and a light outlet surface; quantum dots are filled in quantum dot modules; and the quantum dot modules are embedded in the light guide plate, and are arranged between the light inlet surface and the light outlet surface of the light guide plate.
Description
Technical field
The present invention relates to plane display field, particularly relate to the preparation method of a kind of backlight module backlight module and backlight module.
Background technology
Liquid crystal indicator (LiquidCrystalDisplay, LCD), as a kind of common electronic installation, because it has the features such as low in energy consumption, volume is little, quality is light, and enjoys the favor of user.Liquid crystal indicator comprises display panels and backlight module, and the contiguous described display panels of described backlight module is arranged, for providing area source for described display panels.Light source and light guide plate is generally included in described backlight module, the light sent from light source enters and enters into light guide plate from the incidence surface of described light guide plate, thinks that described display panels provides area source after the diffusion via light guide plate by the exiting surface outgoing of light guide plate.Quantum dot is concentrated owing to can launch power spectrum, very pure monochromatic light, can realize better imaged color, be therefore expected to can beyond tradition fluorescent material fluorescent lamp and be applied in backlight module.At present, quantum dot is applied in backlight module quantum dot film, usually, is applied in backlight module after being cut by quantum dot film.But, due to the unstability of quantum dot, the cropped back edge certain limit of quantum dot film (such as, about 1mm) oxygen easily and in air and water reacts, thus the edge fail after causing quantum dot film cropped, and then affect quantum dot film cropped after the quality of light of injection at edge, have influence on the performance of liquid crystal indicator display frame further.
Summary of the invention
The invention provides a kind of backlight module, described backlight module comprises light guide plate and quantum dot module, described light guide plate comprises incidence surface, exiting surface, quantum dot is filled with in described quantum dot module, be embedded in described light guide plate in described quantum dot module, and described quantum dot module installation is between the incidence surface and the exiting surface of described light guide plate of described light guide plate.
Wherein, described light guide plate also comprises the bottom surface be oppositely arranged with described exiting surface, and described incidence surface is crossing with described exiting surface and described exiting surface respectively; Described quantum dot module comprises first surface, second surface, the 3rd surface and the 4th surface, described first surface and described second surface are oppositely arranged, described 3rd surface is oppositely arranged with described 4th surface, and described 3rd surface is crossing with described first surface and described second surface respectively, described 4th surface is crossing with described first surface and described second surface respectively, described first surface is arranged compared to the contiguous described incidence surface of described second surface, the described 3rd contiguous described exiting surface in surface is arranged, and described 4th contiguous described bottom surface, surface is arranged.
Wherein, described 3rd surface protrudes from the described exiting surface of described light guide plate;
And/or described 4th surface protrudes from the described bottom surface of described light guide plate.
Wherein, described first surface is parallel with the described incidence surface of described light guide plate.
Wherein, the material of the material of the base material of described light guide plate and the base material of described quantum dot module is PMMA.
Present invention also offers a kind of preparation method of backlight module, the preparation method of described backlight module comprises:
Light guide plate forms storage tank, between the incidence surface that described storage tank is arranged on described light guide plate and the exiting surface of light guide plate, described light guide plate is formed a breach, described breach is communicated with described storage tank with extraneous;
In described storage tank, quantum dot colloid is inserted by described breach;
Solidify described quantum dot colloid, form quantum point module;
Seal described breach.
Wherein, described step " solidify described quantum dot colloid, formed quantum point module " comprising:
Described quantum dot colloid is solidified to the direction of described breach, to form described quantum dot module from the one end away from described breach.
Wherein, described step " is solidified described quantum dot colloid, formed quantum point module " is carry out under the environment of exclusion of water oxygen.
Wherein, between described step " forms storage tank; between the incidence surface that described storage tank is arranged on described light guide plate and the exiting surface of light guide plate; described light guide plate is formed a breach; described breach is communicated with described storage tank and the external world " on light guide plate and described step " inserts quantum dot colloid by described breach " in described storage tank, the preparation method of described backlight module also comprises:
Quantum dot powder is mixed in acrylic resin, makes quantum dot suspension colloid;
Carry out concussion to described quantum dot suspension colloid to stir, be evenly mixed in described acrylic resin to make quantum dot powder;
Evacuation and centrifugal degassing process is carried out to mixed uniformly described quantum dot suspension colloid.
Wherein, described step " seals described breach " and comprising:
Use point gum machine sealing colloid to be filled into described breach to seal described breach, the material of described sealing colloid is identical with the material of described light guide plate.
Compared to prior art, backlight module of the present invention is embedded in described light guide plate by described quantum dot module, and described quantum dot module installation is between the incidence surface and exiting surface of described light guide plate, described quantum dot module would not expose in atmosphere, thus can not be reacted by the oxygen in air and steam, thus make the quality via the light of described backlight module outgoing better, further, what use the liquid crystal indicator of described backlight module has good display frame.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the backlight module of the present invention one better embodiment.
Fig. 2 is the cross-sectional view along I-I in Fig. 1.
Fig. 3 is the structural representation of the backlight module of another better embodiment of the present invention.
Fig. 4 is the cross-sectional view along III-III in Fig. 3.
Fig. 5 is the flow chart of the preparation method of the backlight module of the present invention one better embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See also Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the backlight module of the present invention one better embodiment; Fig. 2 is the cross-sectional view along I-I in Fig. 1.Described backlight module 10 comprises light guide plate 100 and quantum dot module 200.Described light guide plate 100 comprises incidence surface 110 and exiting surface 120, quantum dot is filled with in described quantum dot module 200, be embedded in described light guide plate 100 in described quantum dot module 200, and between described quantum dot module 200 incidence surface 110 that is arranged on described light guide plate 100 and the exiting surface 120 of described light guide plate 100.
In the present embodiment, the backlight module being applied to side incident type for light guide plate 100 is described.The backlight module of so-called side incident type, namely the light source in backlight module is positioned at the side of light guide plate 100, the side of the contiguous described light source of described light guide plate 100 is incidence surface, and in the backlight module of side incident type, the described incidence surface of described light guide plate 100 is crossing with described exiting surface.Described incidence surface 110 is positioned at the side of described light guide plate 100, and described light guide plate 100 also comprises bottom surface 130, and described incidence surface 110 is crossing with described exiting surface 120 and described bottom surface 130 respectively, and described exiting surface 120 is oppositely arranged with described bottom surface 130.Be embedded in described light guide plate 100 in described quantum dot module 200, and described quantum dot module 200 is arranged between the described incidence surface 110 of described light guide plate 100 and the exiting surface 120 of described light guide plate 100.Be embedded in described light guide plate 100 in quantum dot module 200 described here, refer to, described quantum dot film 200 is covered by described light guide plate 100 completely.
Understandably, although the backlight module being applied to side incident type for described light guide plate 100 in above-mentioned embodiment is described, in other embodiments, described light guide plate 100 also can be applicable in the backlight module of straight-down negative.The backlight module of so-called straight-down negative, namely the bottom surface that the light source in backlight module is positioned at light guide plate is arranged, and now, the bottom surface of the described light source of vicinity of described light guide plate 100 is also incidence surface, in the backlight module of straight-down negative, described incidence surface and the described exiting surface of described light guide plate are oppositely arranged.When described light guide plate is applied in the backlight module of side incident type, between the incidence surface that described quantum dot module 200 is arranged on described light guide plate 100 too and the exiting surface of described light guide plate 100.
Described light guide plate 100 adopts jetting formation process to be formed, and the material forming described light guide plate 100 is polymethyl methacrylate (polymethylmethacrylate, PMMA).Can preparation described light guide plate 100 mould in make respective design, to prepare the light guide plate 100 with accommodating cavity, described in the described accommodating cavity of described light guide plate 100 in bury described quantum dot module 200.Described PMMA material has stronger hygroscopicity, there is good air-tightness, therefore, elect the material of described light guide plate 100 as PMMA, steam can be prevented the impact of described quantum dot module 200, reacting to prevent described quantum dot module 200 with water and oxygen and losing efficacy.In addition, because quantum dot is easily heated cancellation in the event of high temperatures, thus cause quantum dot module 200 by thermal failure.And the heat conductivility of described PMMA material is more weak, elect the material of described light guide plate 100 as PMMA, therefore, when the incidence surface 110 of the contiguous described light guide plate 100 of light source is arranged, described light guide plate 100 can completely cut off the heat that described light source comes out well, to avoid the quantum dot cancellation when being heated in described quantum dot module 200.Meanwhile, described PMMA material has good UV penetrance, and therefore, described light guide plate 100 should not produce when follow-up formation quantum point module 200 and turns yellow and produce aetiolation.
Preferably, in described quantum dot module 200, the material of base material is identical with the material of described light guide plate 100, and namely the material of described quantum dot module 200 is also PMMA in the present embodiment, and the stable refractive index of described PMMA base material is 1.49.When the material of described quantum dot module 200 is identical with the material of described light guide plate 100, refringence is not had between described quantum dot module 200 and described light guide plate 100, therefore, light is when the material from described light guide plate 100 enters into described quantum dot module 200 or shines in described light guide plate 100 from described quantum dot module 200, the transmission path of light is not by the impact at the interface between described quantum dot module 200 and described light guide plate 200, therefore, light does not have loss when the material from described light guide plate 100 enters into described quantum dot module 200 or shines in described light guide plate 100 from described quantum dot module 200.
Described quantum dot module 200 comprises quantum dot powder.Simply a kind of processing procedure of quantum dot module 200 is described below below, quantum dot powder is blended in base material (such as, acrylic resin, preferably, PMMA) in formed quantum dot suspension colloid, quantum dot suspension colloid after curing process to form quantum point module 200.For example, described curing process can for penetrating by UV illumination and solidifying.
Irradiating described quantum dot module 200 by light can excite the quantum dot of described quantum dot module 200 inside to send the pure color light of high chroma, the pure color light mixed light of the light that light source sends and the high chroma that described quantum dot module 200 inside is excited, thus produce the white light of high chroma.And quantum dot, be can be used to change the light light launched by light emitting diode to generate the light in visible or region of ultra-red.Quantum dot is the nanocrystal with the diameter less than (bulk) in bulk Exciton Bohr Radius.Owing to quantum confinement effect, the energy difference between the electronic state of quantum dot is the component of quantum dot and the function both physical size.Therefore, tuning optics and photoelectronics attribute with adjusting quantum dot can be come by the physical size changing quantum dot.The all wavelengths that quantum dot absorptance absorption peak wavelength is shorter, and launch the light at longer wavelength place.2nmCdSe quantum dot is launched in the blue region of visible spectrum, and 10nmCdSe quantum dot is launched in the red area of visible spectrum.Quantum dot is applied in Display Technique, can send that power spectrum is concentrated, red/green monochromatic light of very pure high-quality by quantum dot, and the light-emitting phosphor characteristic of complete beyond tradition LED backlight, realizes better imaged color.Therefore, quantum dot Display Technique is regarded as the following efficient preferred plan improving display color gamut value, the technology wind vane that display industry in the whole world is new especially.
Described quantum dot module 200 comprises first surface 210, second surface 220, the 3rd surface 230 and the 4th surface 240.Described first surface 210 is oppositely arranged with described second surface 220, described 3rd surface 230 is oppositely arranged with described 4th surface 240, and described 3rd surface 230 is crossing with described first surface 210 and described second surface 220 respectively, described 4th surface 240 is crossing with described first surface 210 and described second surface 220 respectively, described first surface 210 is arranged compared to the contiguous described incidence surface 110 of described second surface 220, the described 3rd contiguous described exiting surface 120 in surface 230 is arranged, and contiguous described bottom surface 130, described 4th bottom surface 240 is arranged.Described 3rd surface 230 protrudes from the described exiting surface 120 of described light guide plate 100, and/or described 4th surface 240 protrudes from the described bottom surface 130 of described light guide plate 100.In one embodiment, described 3rd surface 230 protrudes from the described exiting surface 120 of described light guide plate 100, described 4th surface 240 is concordant with the bottom surface 130 of described light guide plate, and thus, described light guide plate 100 and described quantum dot module 200 form " T " word stood upside down.By described light guide plate 100 and described quantum dot module 200 being designed to " T " word stood upside down, the area of the contiguous described exiting surface 120 of described quantum dot module 200 increases, therefore, can have an effect with the quantum dot of described quantum dot module 200 better when the light that the light source of described backlight module 10 sends enters into described light guide plate 100, to improve the performance of the light of outgoing after described quantum dot module 200.
In another embodiment, described 3rd surface 230 is concordant with the described exiting surface 120 of described light guide plate 100, and described 4th surface 240 protrudes from the described bottom surface 130 of described light guide plate 100.Thus, described light guide plate 110 and described quantum dot module 200 form " T " word.By described light guide plate 100 and described quantum dot module 200 are designed to " T " word, the area of the contiguous described exiting surface 120 of described quantum dot module 200 increases, therefore, can have an effect with the quantum dot of described quantum dot module 200 better when the light that the light source of described backlight module 10 sends enters into described light guide plate 100, to improve the performance of the light of outgoing after described quantum dot module 200.
In another embodiment, described 3rd surface 230 protrudes from the described exiting surface 120 of described light guide plate 100, and described 4th surface 240 protrudes from the described bottom surface 130 of described light guide plate 100.Thus, described light guide plate 110 and described quantum dot module 200 form " ten " word.By described light guide plate 100 and described quantum dot module 200 are designed to " ten " word, the area of the contiguous described exiting surface 120 of described quantum dot module 200 increases, therefore, can have an effect with the quantum dot of described quantum dot module 200 better when the light that the light source of described backlight module 10 sends enters into described light guide plate 100, to improve the performance of the light of outgoing after described quantum dot module 200.
Preferably, described first surface 210 is parallel with the described incidence surface 110 of described light guide plate 100.When described first surface 210 is parallel with the described incidence surface 110 of described light guide plate 100, angle is not had between the described incidence surface 110 of described light guide plate 100 and the first surface 210 of described quantum dot module 200, thus the existence avoided due to angle when the light entered from the described incidence surface 110 of described light guide plate 100 enters the first surface 210 of described quantum dot module 200 again, and make the difference of the light luminance of the part entering into quantum dot module 200 light guide plate 100 below.
Preferably, described light guide plate 100 is one-body molded with described quantum dot module 200.
Below the backlight module of another better embodiment of the present invention is introduced.Refer to Fig. 3, Fig. 3 is the structural representation of the backlight module of another better embodiment of the present invention; Fig. 4 is the cross-sectional view along III-III in Fig. 3.
Described backlight module 10 comprises light guide plate 100 and quantum dot module 200.Described light guide plate 100 comprises incidence surface 110 and exiting surface 120, quantum dot is filled with in described quantum dot module 200, be embedded in described light guide plate 100 in described quantum dot module 200, and between described quantum dot module 200 incidence surface 110 that is arranged on described light guide plate 100 and the exiting surface 120 of described light guide plate 100.
The backlight module being applied to side incident type for light guide plate 100 is described.The backlight module of so-called side incident type, namely the light source in backlight module is positioned at the side of light guide plate 100, the side of the contiguous described light source of described light guide plate 100 is incidence surface, and in the backlight module of side incident type, the described incidence surface of described light guide plate 100 is crossing with described exiting surface.Described incidence surface 110 is positioned at the side of described light guide plate 100, and described light guide plate 100 also comprises bottom surface 130, and described incidence surface 110 is crossing with described exiting surface 120 and described bottom surface 130 respectively, and described exiting surface 120 is oppositely arranged with described bottom surface 130.Be embedded in described light guide plate 100 in described quantum dot module 200, and described quantum dot module 200 is arranged between the described incidence surface 110 of described light guide plate 100 and the exiting surface 120 of described light guide plate 100.Be embedded in described light guide plate 100 in quantum dot module 200 described here, refer to, described quantum dot film 200 is covered by described light guide plate 100 completely.
Understandably, although the backlight module being applied to side incident type for described light guide plate 100 in above-mentioned embodiment is described, in other embodiments, described light guide plate 100 also can be applicable in the backlight module of straight-down negative.The backlight module of so-called straight-down negative, namely the bottom surface that the light source in backlight module is positioned at light guide plate is arranged, and now, the bottom surface of the described light source of vicinity of described light guide plate 100 is also incidence surface, in the backlight module of straight-down negative, described incidence surface and the described exiting surface of described light guide plate are oppositely arranged.When described light guide plate is applied in the backlight module of side incident type, between the incidence surface that described quantum dot module 200 is arranged on described light guide plate 100 too and the exiting surface of described light guide plate 100.
Described light guide plate 100 adopts jetting formation process to be formed, and the material forming described light guide plate 100 is polymethyl methacrylate.Can preparation described light guide plate 100 mould in make respective design, to prepare the light guide plate 100 with accommodating cavity, described in the described accommodating cavity of described light guide plate 100 in bury described quantum dot module 200.Described PMMA material has stronger hygroscopicity, there is good air-tightness, therefore, elect the material of described light guide plate 100 as PMMA, steam can be prevented the impact of described quantum dot module 200, reacting to prevent described quantum dot module 200 with water and oxygen and losing efficacy.In addition, because quantum dot is easily heated cancellation in the event of high temperatures, thus cause quantum dot module 200 by thermal failure.And the heat conductivility of described PMMA material is more weak, elect the material of described light guide plate 100 as PMMA, therefore, when the incidence surface 110 of the contiguous described light guide plate 100 of light source is arranged, described light guide plate 100 can completely cut off the heat that described light source comes out well, to avoid the quantum dot cancellation when being heated in described quantum dot module 200.Meanwhile, described PMMA material has good UV penetrance, and therefore, described light guide plate 100 should not produce when follow-up formation quantum point module 200 and turns yellow and produce aetiolation.
Described quantum dot module 200 comprises quantum dot powder.Simply a kind of processing procedure of quantum dot module 200 is described below below, quantum dot powder is blended in base material (such as, acrylic resin, preferably, PMMA) in formed quantum dot suspension colloid, quantum dot suspension colloid after curing process to form quantum point module 200.For example, described curing process can for penetrating by UV illumination and solidifying.
Described quantum dot module 200 comprises first surface 210, second surface 220, the 3rd surface 230 and the 4th surface 240.Described first surface 210 is oppositely arranged with described second surface 220, described 3rd surface 230 is oppositely arranged with described 4th surface 240, and described 3rd surface 230 is crossing with described first surface 210 and described second surface 220 respectively, described 4th surface 240 is crossing with described first surface 210 and described second surface 220 respectively, described first surface 210 is arranged compared to the contiguous described incidence surface 110 of described second surface 220, the described 3rd contiguous described exiting surface 120 in surface 230 is arranged, and contiguous described bottom surface 130, described 4th bottom surface 240 is arranged.Described 3rd surface 230 protrudes from the described exiting surface 120 of described light guide plate 100, and/or described 4th surface 240 protrudes from the described bottom surface 130 of described light guide plate 100.Described 3rd surface 230 protrudes from the described exiting surface 120 of described light guide plate 100, and described 4th surface 240 is concordant with the bottom surface 130 of described light guide plate, and thus, described light guide plate 100 and described quantum dot module 200 form " T " word stood upside down.By described light guide plate 100 and described quantum dot module 200 being designed to " T " word stood upside down, the area of the contiguous described exiting surface 120 of described quantum dot module 200 increases, therefore, can have an effect with the quantum dot of described quantum dot module 200 better when the light that the light source of described backlight module 10 sends enters into described light guide plate 100, to improve the performance of the light of outgoing after described quantum dot module 200.
In another embodiment, described 3rd surface 230 is concordant with the described exiting surface 120 of described light guide plate 100, and described 4th surface 240 protrudes from the described bottom surface 130 of described light guide plate 100.Thus, described light guide plate 110 and described quantum dot module 200 form " T " word.By described light guide plate 100 and described quantum dot module 200 are designed to " T " word, the area of the contiguous described exiting surface 120 of described quantum dot module 200 increases, therefore, can have an effect with the quantum dot of described quantum dot module 200 better when the light that the light source of described backlight module 10 sends enters into described light guide plate 100, to improve the performance of the light of outgoing after described quantum dot module 200.
In another embodiment, in another embodiment, described 3rd surface 230 protrudes from the described exiting surface 120 of described light guide plate 100, and described 4th surface 240 protrudes from the described bottom surface 130 of described light guide plate 100.Thus, described light guide plate 110 and described quantum dot module 200 form " ten " word.By described light guide plate 100 and described quantum dot module 200 are designed to " ten " word, the area of the contiguous described exiting surface 120 of described quantum dot module 200 increases, therefore, can have an effect with the quantum dot of described quantum dot module 200 better when the light that the light source of described backlight module 10 sends enters into described light guide plate 100, to improve the performance of the light of outgoing after described quantum dot module 200.
Preferably, described first surface 210 is parallel with the described incidence surface 110 of described light guide plate 100.When described first surface 210 is parallel with the described incidence surface 110 of described light guide plate 100, angle is not had between the described incidence surface 110 of described light guide plate 100 and the first surface 210 of described quantum dot module 200, thus the existence avoided due to angle when the light entered from the described incidence surface 110 of described light guide plate 100 enters the first surface 210 of described quantum dot module 200 again, and make the difference of the light luminance of the part entering into quantum dot module 200 light guide plate 100 below.
Preferably, described light guide plate 100 is one-body molded with described quantum dot module 200.
In the present embodiment, described backlight module 100 also comprises light source 300, reflector plate 400 and blooming piece 500.The described incidence surface 110 of the contiguous described light guide plate 100 of described light source 300 is arranged, and described light source 300 is for sending the first light.The light sent from described light source 300 enters into one end of described light guide plate 100 through the described incidence surface 110 of described light guide plate 100.Described first light forms the second light via after described quantum dot module 200, and enters into all the other positions of light guide plate 100, and via described exiting surface 120 outgoing of described light guide plate 100.In the present embodiment, described light source 300 is blue light-emitting diode, therefore, described first light that described light source 300 sends is blue light, described first light is used for exciting described quantum dot module 200 to produce red-green glow, and the blue light that described light source 300 sends and described quantum dot module 200 are excited the described red-green glow mixed light that produces to produce the second light of the white of high chroma.
The described bottom surface 130 of the contiguous described light guide plate 100 of described reflector plate 400 is arranged.The first light sent from described light source 300 and via the second light produced after described quantum dot module 200 when entering into described light guide plate 100, have part first light and part second light can go out be shot out through the described bottom surface 130 of described light guide plate 100, if the words that part first light or part second light go out to be shot out through the described bottom surface 130 of described light guide plate 100, light then through the outgoing of described exiting surface 120 will reduce, and then the light making described backlight module 10 shine the display floater in liquid crystal indicator reduces, and then have influence on the brightness of described display floater.By arranging described reflector plate 400 in the described bottom surface 130 of described light guide plate 100, make into the light of described bottom surface 130 outgoing of described light guide plate 100 again enter in described light guide plate 100 through the reflection of described reflector plate 400, and then increase through the light of described exiting surface 120 outgoing, thus add the light that backlight module 10 shines display floater in liquid crystal indicator, and then improve the brightness of described display floater.
The quantity of described blooming piece 500 is at least one, and the contiguous described exiting surface 120 of described blooming piece 500 is arranged.In the present embodiment, described blooming piece 500 is brightness enhancement film, and described brightness enhancement film is for improving the light extraction efficiency of described second beam projecting to the display floater in display unit.Described brightness enhancement film can be general prismatic lens (normalprismsheet), multi-functional prismatic lens, micro-lensfilm and reflective polaroid (reflectivepolarizer) etc.
Compared to prior art, backlight module 10 of the present invention will be embedded in described light guide plate 100 in described quantum dot module 200, and between described quantum dot module 200 incidence surface 110 that is arranged on described light guide plate 100 and exiting surface 120, described quantum dot module 200 would not expose in atmosphere, thus can not be reacted by the oxygen in air and steam, thus make the quality of the light via the outgoing of described backlight module 10 better, further, what use the liquid crystal indicator of described backlight module 10 has good display frame.
Below in conjunction with above to the description of backlight module 10, the preparation method of described backlight module 10 is described below.Refer to Fig. 5, Fig. 5 is the flow chart of the preparation method of the backlight module of the present invention one better embodiment.The preparation method of described backlight module includes but are not limited to following steps.
Step S101, light guide plate forms storage tank on 100, between the incidence surface 110 that described storage tank is arranged on described light guide plate 100 and the exiting surface 120 of light guide plate 100, described light guide plate 100 forms a breach, and described breach is communicated with described storage tank with extraneous.
Step S102, inserts quantum dot colloid by described breach in described storage tank.Preferably, described quantum dot colloid is for being mixed into the colloid formed in base material (such as, acrylic resin, preferably, PMMA) by quantum dot.
Step S103, solidifies described quantum dot colloid, forms quantum point module 200.
Because quantum dot colloid volume when solidifying shrinks, in order to avoid quantum dot colloid in the curing process volume shrink and produce space, preferably, solidify described quantum dot colloid, when forming quantum point module 200, described quantum dot colloid can be solidified to the direction of described breach, to form described quantum dot module 200 from the one end away from described breach.When being positioned at the quantum dot colloid generation solidification away from described breach one end, away from the space that the quantum dot colloid of breach one end is produced due to volume contraction by the quantum dot colloid that sedimentation can occur fill away from one end of breach, thus avoid quantum dot colloid in the curing process volume shrink and the space produced.
Preferably, solidify described quantum dot colloid, the step forming quantum point module 200 is carried out under the environment of exclusion of water oxygen, so that the oxygen in air and steam are on the impact of quantum dot.
Step S104, seals described breach.In the present embodiment, sealing colloid can be used to seal described breach by point gum machine, then the sealing colloid sealing described breach is cured.The material of described sealing colloid and described light guide plate material identical, the material of described sealing colloid can be UV glue.
Preferably, when the base material that described quantum dot incorporates is acrylic resin, also comprise the steps between described step S101 and described step S102.
Step I, is mixed into quantum dot powder in described acrylic resin, makes quantum dot suspension colloid.
Step II, carries out concussion to described quantum dot suspension colloid and stirs, be evenly mixed in described acrylic resin to make quantum dot powder.
Step II I, carries out evacuation and centrifugal degassing process to mixed uniformly described quantum dot suspension colloid.By the process of Step II I, the gas in quantum dot suspension colloid can be made to discharge.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (10)
1. a backlight module, described backlight module comprises light guide plate and quantum dot module, described light guide plate comprises incidence surface, exiting surface, quantum dot is filled with in described quantum dot module, be embedded in described light guide plate in described quantum dot module, and described quantum dot module installation is between the incidence surface and the exiting surface of described light guide plate of described light guide plate.
2. backlight module as claimed in claim 1, it is characterized in that, described light guide plate also comprises the bottom surface be oppositely arranged with described exiting surface, and described incidence surface is crossing with described exiting surface and described exiting surface respectively;
Described quantum dot module comprises first surface, second surface, the 3rd surface and the 4th surface, described first surface and described second surface are oppositely arranged, described 3rd surface is oppositely arranged with described 4th surface, and described 3rd surface is crossing with described first surface and described second surface respectively, described 4th surface is crossing with described first surface and described second surface respectively, described first surface is arranged compared to the contiguous described incidence surface of described second surface, the described 3rd contiguous described exiting surface in surface is arranged, and described 4th contiguous described bottom surface, surface is arranged.
3. backlight module as claimed in claim 2, it is characterized in that, described 3rd surface protrudes from the described exiting surface of described light guide plate;
And/or
Described 4th surface protrudes from the described bottom surface of described light guide plate.
4. backlight module as claimed in claim 2, it is characterized in that, described first surface is parallel with the described incidence surface of described light guide plate.
5. backlight module as claimed in claim 1, it is characterized in that, the material of the material of the base material of described light guide plate and the base material of described quantum dot module is PMMA.
6. a preparation method for backlight module, is characterized in that, the preparation method of described backlight module comprises:
Light guide plate forms storage tank, between the incidence surface that described storage tank is arranged on described light guide plate and the exiting surface of light guide plate, described light guide plate is formed a breach, described breach is communicated with described storage tank with extraneous;
In described storage tank, quantum dot colloid is inserted by described breach;
Solidify described quantum dot colloid, form quantum point module;
Seal described breach.
7. the preparation method of backlight module as claimed in claim 6, is characterized in that, described step " is solidified described quantum dot colloid, formation quantum point module " and being comprised:
Described quantum dot colloid is solidified to the direction of described breach, to form described quantum dot module from the one end away from described breach.
8. the preparation method of backlight module as claimed in claim 6, is characterized in that, described step " is solidified described quantum dot colloid, formed quantum point module " is carry out under the environment of exclusion of water oxygen.
9. the preparation method of backlight module as claimed in claim 6, it is characterized in that, between described step " forms storage tank; between the incidence surface that described storage tank is arranged on described light guide plate and the exiting surface of light guide plate; described light guide plate is formed a breach; described breach is communicated with described storage tank and the external world " on light guide plate and described step " inserts quantum dot colloid by described breach " in described storage tank, the preparation method of described backlight module comprises:
Quantum dot powder is mixed in acrylic resin, makes quantum dot suspension colloid;
Carry out concussion to described quantum dot suspension colloid to stir, be evenly mixed in described acrylic resin to make quantum dot powder;
Evacuation and centrifugal degassing process is carried out to mixed uniformly described quantum dot suspension colloid.
10. the preparation method of backlight module as claimed in claim 6, it is characterized in that, described step " seals described breach " and comprising:
Use point gum machine sealing colloid to be filled into described breach to seal described breach, the material of described sealing colloid is identical with the material of described light guide plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472562.0A CN105090823B (en) | 2015-08-04 | 2015-08-04 | The preparation method of backlight module and backlight module |
| PCT/CN2015/088426 WO2017020381A1 (en) | 2015-08-04 | 2015-08-28 | Backlight module and preparation method for backlight module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510472562.0A CN105090823B (en) | 2015-08-04 | 2015-08-04 | The preparation method of backlight module and backlight module |
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| CN105090823B CN105090823B (en) | 2018-10-23 |
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| CN105700242A (en) * | 2016-04-29 | 2016-06-22 | 深圳市华星光电技术有限公司 | Backlight module and double-side liquid crystal display device |
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- 2015-08-28 WO PCT/CN2015/088426 patent/WO2017020381A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105090823B (en) | 2018-10-23 |
| WO2017020381A1 (en) | 2017-02-09 |
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