CN105068314A - Direct light type backlight module - Google Patents
Direct light type backlight module Download PDFInfo
- Publication number
- CN105068314A CN105068314A CN201510486464.2A CN201510486464A CN105068314A CN 105068314 A CN105068314 A CN 105068314A CN 201510486464 A CN201510486464 A CN 201510486464A CN 105068314 A CN105068314 A CN 105068314A
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- blue led
- porous
- layer
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a direct light type backlight module which comprises a reflector plate, a plurality of blue LED backlight sources, a vacuum clearance layer and a quantum dot layer. The reflector plate is arranged on the bottom layer of the backlight module. The blue LED backlight sources are placed on the bottom edge of the backlight module. The vacuum clearance layer is arranged above the blue LED backlight sources. The quantum dot layer is used for converting blue light emitted by the blue LED backlight sources to be blue, green and red to enable the blue light to be close to white dots. Multiple irregular holes or porous vacuum clearances are arranged on or in the quantum dot layer, light is made to pass through the quantum dot layer repeatedly through light mixing space formed by the vacuum clearance layer, the irregular holes and the reflector plate, and then the color conversion efficiency is improved. Compared with the prior art, the heat insulation vacuum clearance layer and the irregular holes are utilized for clamping the quantum dot layer, the light emitted by the blue LED backlight sources can repeatedly pass through the quantum dot layer, then high recovery of the light is achieved, the color conversion efficiency is improved, and therefore the blue, green and red obtained after conversion are mixed to be close to white.
Description
Technical field
The present invention relates to lcd technology, particularly relate to a kind of down straight aphototropism mode set.
Background technology
In recent years, solid-state illumination light emitting diode (LED) receives much attention.The efficiency of existing LED is far better than traditional incandescent lamp.In general, solid-state illumination comprises two kinds of typical architectures: one is in conjunction with red LED, green LED and blue led; Another kind is ultraviolet leds chip or blue-light LED chip color combining conversion phosphor.For the latter, the light conversion layer containing color conversion fluorescent powder often needs higher photoluminescence quantum efficiencies, suitable refractive index, good photostability and required glow color.Due to quantum dot (QuantumDot, QD) be a kind of emitting semiconductor crystal, it has the intrinsic thermal stability of narrow and adjustable photoluminescence spectra, high photoluminescence quantum efficiencies, inorganic material, in addition, blue LED light also can be converted into the blueness of high saturation, green and red by quantum dot effectively, thus on screen, show the color of most wide gamut.Therefore, the QD-LED based on color conversion principle has huge potential using value.
In the prior art, a kind of down straight aphototropism mode set mainly comprises a blue led backlight, be positioned at diffuser plate (DiffuserPlate, DP) above blue led backlight, be positioned at quantum dot film layer (QDfilm) above diffuser plate and multilayer optical film.But the material cost of this backlight module is higher, the number of plies of optical thin film is too much, the lower space causing many defects such as efficiency of color conversion is poor, the thickness of diffuser plate is larger also to there is improvement of QD concentration.Another kind of down straight aphototropism mode set comprises a blue led backlight, be positioned at quantum dot film layer above blue led backlight, be positioned at diffuser plate on quantum dot film layer and multilayer optical film.But this backlight module makes radiating effect poor because quantum dot film layer fits in blue led backlight, and color stability is not high, in addition, QD concentration is lower, efficiency of color conversion is low problem that it exists equally.
In view of this, how designing a kind of backlight module or improve existing backlight module, increasing QD concentration and/or improve efficiency of color conversion, thus overcoming above-mentioned deficiency of the prior art, is the problem that person skilled is urgently to be resolved hurrily in the industry.
Summary of the invention
For the above-mentioned defect existing for backlight module of the prior art, the down straight aphototropism mode set of that the invention provides a kind of novelty, that quantum dot thin layer can be improved efficiency of color conversion.
According to one aspect of the present invention, provide a kind of down straight aphototropism mode set, comprising:
One reflector plate, is arranged at the bottom of described down straight aphototropism mode set;
Multiple blue led backlight, is positioned over the base of described down straight aphototropism mode set;
One vacuum space gap layer, is arranged at the top of described blue led backlight; And
One quantum dot (QuantumDot, QD) layer, is arranged at a support portion, this support portion in order to maintain described vacuum space gap layer, this quantum dot layer in order to the blue light of described blue led backlight outgoing to be converted to blueness, green and red,
Wherein, on described quantum dot layer or its inside comprises irregular porous or porous vacuum gap, form a mixed light space by described vacuum space gap layer, described irregular porous or porous vacuum gap and described reflector plate, make the light of described blue led backlight outgoing iterate through described quantum dot layer by this mixed light space and then increase the saturation degree of color conversion.
An embodiment wherein, described vacuum space gap layer is parallel to light-emitting area and is of a size of A1, and the hole average-size of described irregular porous is A4, and A1>A4.
An embodiment wherein, described down straight aphototropism mode set also comprises a reflecting plate, described reflecting plate has the multiple perforates along with described blue led backlight period profile, and the average-size of described perforate is A3, and A1>A3>A4.
An embodiment wherein, light transmittance corresponding to described irregular porous or porous vacuum gap is between 5% to 50%.
An embodiment wherein, the size in described irregular porous or porous vacuum gap is between 0.1 micron to 2000 microns.
An embodiment wherein, the size in described irregular porous or porous vacuum gap is less than 10 microns.
An embodiment wherein, described irregular porous or porous vacuum gap are polymethylmethacrylate (PMMA), copolymer of methyl methacrylatestyrene (MS), polypropylene (PP), tygon (PE), polyethylene terephthalate (PET), cyclic olefin polymer (COP), inorganic particle or glass material.
An embodiment wherein, described quantum dot layer comprises a main body and multiple diffusion particle, quantum dot fluorescence powder is scattered in described diffusion particle, and described diffusion particle is uniformly distributed in described main body, and the size of described quantum dot fluorescence powder is between 1nm and 10nm.
An embodiment wherein, the material of described main body is polycarbonate (PC), polymethylmethacrylate (PMMA), copolymer of methyl methacrylatestyrene (MS), polyethylene terephthalate (PET), transparent polystyrene (PS), cyclic olefine copolymer (COC), silica gel, epoxy resin (EPOXY) or silicon dioxide (SiO2), the material of described diffusion particle is polymethylmethacrylate (PMMA), copolymer of methyl methacrylatestyrene (MS), acrylonitrile-butadiene-styrene copolymer resin (ABS), transparent polystyrene (PS), polyurethane (PU), silicon dioxide (SiO2), magnesium hydroxide, calcium carbonate (CaCO3), barium sulphate (BaSO4), alundum (Al2O3) (Al2O3) or titania (TiO2) powder, and described diffusion particle is different from the material of described main body.
According to another aspect of the present invention, provide a kind of side entrance back module, this side entrance back module comprises a light guide plate.Wherein, this backlight module also comprises:
One reflector plate, is arranged at the bottom of described side entrance back module;
Multiple blue led backlight, is positioned over the incident side of described light guide plate;
One vacuum space gap layer, is arranged between this blue led backlight and this light guide plate; And
One quantum dot (QuantumDot, QD) layer, is arranged at a support portion, this support portion in order to maintain described vacuum space gap layer, this quantum dot layer in order to the blue light of described blue led backlight outgoing to be converted to blueness, green and red,
Wherein, on described quantum dot layer or its inside comprises irregular porous or porous vacuum gap, form a mixed light space by described vacuum space gap layer, described irregular porous or porous vacuum gap and described reflector plate, make the light of described blue led backlight outgoing iterate through described quantum dot layer by this mixed light space and then increase the saturation degree of color conversion.
Adopt down straight aphototropism mode set of the present invention or side entrance back module, its reflector plate is arranged at the bottom of backlight module, multiple blue led backlights are positioned over the base of backlight module, vacuum space gap layer is arranged at top (corresponding to straight-down negative) or side (corresponding to the side entering type) of blue led backlight, and quantum dot layer is in order to be converted to blueness, green and red by the blue light of blue led backlight outgoing.On quantum dot layer or its inside comprises irregular porous or porous vacuum gap, form a mixed light space by vacuum space gap layer, irregular porous or porous vacuum gap and reflector plate, make the light of blue led backlight outgoing iterate through quantum dot layer through this mixed light space and then increase the saturation degree of color conversion.Compared to prior art, the vacuum space gap layer that the present invention utilizes thermal resistance exhausted and irregular porous converge quantum dot layer, the light of blue led backlight outgoing is enable to iterate through this quantum dot layer, and then the height realizing light reclaims, increase the efficiency of color conversion, thus blueness, green and the close white of red mixing after making conversion.
Accompanying drawing explanation
Reader, after having read the specific embodiment of the present invention with reference to accompanying drawing, will become apparent various aspects of the present invention.Wherein,
Figure 1A illustrates the structural representation of a kind of down straight aphototropism mode set of the prior art;
Figure 1B illustrates the structural representation of the another kind of down straight aphototropism mode set of prior art;
Fig. 2 illustrates the structural representation of the down straight aphototropism mode set according to one embodiment of the present invention;
Fig. 3 illustrates the partial enlarged view of the down straight aphototropism mode set of Fig. 2;
Fig. 4 A illustrates the structural representation of the down straight aphototropism mode set according to another embodiment of the present invention;
Fig. 4 B illustrates the inner structure schematic diagram of the quantum dot layer in the down straight aphototropism mode set of Fig. 4 A;
Fig. 4 C illustrates the structural representation of an alternative embodiment of the down straight aphototropism mode set of Fig. 4 A; And
Fig. 5 illustrates the structural representation of the side entrance back module according to an embodiment more of the present invention.
Embodiment
The technology contents disclosed to make the application is more detailed and complete, and can refer to accompanying drawing and following various specific embodiment of the present invention, mark identical in accompanying drawing represents same or analogous assembly.But those of ordinary skill in the art should be appreciated that hereinafter provided embodiment is not used for limiting the scope that contains of the present invention.In addition, accompanying drawing, only for being schematically illustrated, is not drawn according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is described in further detail.
Figure 1A illustrates the structural representation of a kind of down straight aphototropism mode set of the prior art.With reference to Figure 1A, existing down straight aphototropism mode set mainly comprises a blue led backlight 100, be positioned at diffuser plate 102 above blue led backlight 100, be positioned at quantum dot film layer 104, multilayer optical film 106 above diffuser plate 102.Liquid crystal panel 20 is positioned at the top of optical thin film 106, in order to receive the light of optical thin film 106 outgoing.These optical thin films 106 can be dual brightness enhancement films (DualBrightnessEnhancementFilm, DBEF), and it can reflect the light from backlight, and this part light can be re-used.But as shown in preceding sections, the material cost of this backlight module is higher, the number of plies of optical thin film too much, QD concentration is lower causes that efficiency of color conversion is poor, the thickness of diffuser plate is larger.In addition, the display screen of this liquid crystal panel also there will be picture local or comprehensive non-uniform phenomenon, causes the generation of moire (colormura).
Figure 1B illustrates the structural representation of the another kind of down straight aphototropism mode set of prior art.With reference to Figure 1B, with Figure 1A unlike, the diffuser plate 102 in the down straight aphototropism mode set of Figure 1B there occurs change with the design attitude of quantum dot layer 104.Specifically, quantum dot layer 104 is positioned at the top of blue led backlight 100, and diffuser plate 102 changes into and being arranged on quantum dot layer 104.But this backlight module makes radiating effect poor because quantum dot layer 104 fits in blue led backlight 100, and color stability is not high, in addition, QD concentration is lower, efficiency of color conversion is low problem that it exists equally.
In order to overcome above-mentioned defect of the prior art or deficiency, present applicant proposes a kind of new backlight module framework.Fig. 2 illustrates the structural representation of the down straight aphototropism mode set according to one embodiment of the present invention.Fig. 3 illustrates the partial enlarged view of the down straight aphototropism mode set of Fig. 2.
With reference to Fig. 2 and Fig. 3, in this embodiment, down straight aphototropism mode set of the present invention comprises a reflector plate 308, multiple blue led backlight 100, vacuum space gap layer 300, quantum dot layer 304 and irregular porous or porous vacuum interstitial structure 302.In addition, diffuser plate 102 is positioned at the below of optical thin film 106, this diffuser plate 102 in order to by after color conversion, carry out Homogenization Treatments close to the light of white light, and optical thin film 106 diffuser plate 102 is processed after light carry out reflection and blast and be incident to liquid crystal panel 20.Preferably, blue led backlight 100 projects to the factor of porosity of vacuum space gap layer 300 (such as, 100%) factor of porosity (such as, 20% ~ 80%) that blue led backlight 100 projects to irregular porous or porous vacuum interstitial structure 302 is greater than.
Specifically, reflector plate 308 is arranged at the bottom of down straight aphototropism mode set.Multiple blue led backlights 100 are positioned over the base of down straight aphototropism mode set.Vacuum space gap layer 300 is arranged at the top of blue led backlight 100.Quantum dot layer (that is, QD layer) 304 is arranged at a support portion, and this support portion is in order to maintain vacuum space gap layer 300.This quantum dot layer 300 is in order to be converted to blueness, green and red by the blue light of blue led backlight 100 outgoing.Irregular porous or porous vacuum interstitial structure 302 are arranged on quantum dot layer 304, a mixed light space is formed by vacuum space gap layer 300, irregular porous or porous vacuum interstitial structure 302 and reflector plate 308, the light of blue led backlight 100 outgoing is made to iterate through quantum dot layer 304 by this mixed light space, and then raising light utilization, and increase the saturation degree of color conversion.From the above, the heat utilizing vacuum space gap layer 300 can produce blue led backlight 100 carries out thermal resistance absolutely (as shown in the large arrow in Fig. 3), thus avoids the color conversion of heat to the quantum dot layer 304 of top to cause bad interference.
At a specific embodiment, the light-emitting area that vacuum space gap layer 300 is parallel to blue led backlight 100 is of a size of A1, and the hole average-size of irregular porous is A4 (not shown), and A1>A4.In addition, this down straight aphototropism mode set also comprises a reflecting plate 306.Reflecting plate 306 has the multiple perforate h along with blue led backlight 100 period profile, and the average-size of perforate h is A3, and A1>A3>A4.Moreover if blue led backlight is of a size of A2, then vacuum space gap layer 300 width dimensions A1 is in the horizontal direction greater than LED wafer size A2.Here, the width dimensions A1 of vacuum space gap layer 300 is used for isolated heat transfer, and make light easily enter quantum dot layer 304, the hole of irregular porous makes light can re-use (recycle) thus increases efficiency of color conversion, reflecting plate 306 also can reflection ray thus make it again be utilized, but also the distribution scenario of adjustable uniformity coefficient.
At a specific embodiment, the light transmittance of irregular porous or porous vacuum interstitial structure 302 correspondence is between 5% to 50%.In addition, the size of irregular porous or porous vacuum interstitial structure 302 is between 0.1 micron to 2000 microns.Preferably, the size of irregular porous or porous vacuum interstitial structure is less than 10 microns.In addition; from making material, irregular porous or porous vacuum interstitial structure 302 can be polymethylmethacrylate (PMMA), copolymer of methyl methacrylatestyrene (MS), polypropylene (PP), tygon (PE), polyethylene terephthalate (PET), cyclic olefin polymer (COP), inorganic particle or glass material.
From description above, compared to prior art, the vacuum space gap layer that the present invention utilizes thermal resistance exhausted and irregular porous converge quantum dot layer, the light of blue led backlight outgoing is enable to iterate through this quantum dot layer, and then the height realizing light reclaims, increase the efficiency of color conversion, thus blueness, green and the close white of red mixing after making conversion.
Fig. 4 A illustrates the structural representation of the down straight aphototropism mode set according to another embodiment of the present invention.Fig. 4 B illustrates the inner structure schematic diagram of the quantum dot layer in the down straight aphototropism mode set of Fig. 4 A.
Compared by Fig. 4 A and Fig. 3, its key distinction is, it is inner that the irregular porous in Fig. 4 A or porous vacuum interstitial structure are arranged at quantum dot layer 310.Such as, quantum dot layer 310 comprises a main body 312 and multiple diffusion particle 314.Quantum dot fluorescence powder 316 is scattered in inside and the surface of diffusion particle 314.Diffusion particle 314 is uniformly distributed in main body 312, and the size of this quantum dot fluorescence powder 316 is between 1nm and 10nm.
At a specific embodiment, the material of main body 312 is polycarbonate (PC), polymethylmethacrylate (PMMA), copolymer of methyl methacrylatestyrene (MS), polyethylene terephthalate (PET), transparent polystyrene (PS), cyclic olefine copolymer (COC), silica gel, epoxy resin (EPOXY) or silicon dioxide (SiO2).The material of diffusion particle 314 is polymethylmethacrylate (PMMA), copolymer of methyl methacrylatestyrene (MS), acrylonitrile-butadiene-styrene copolymer resin (ABS), transparent polystyrene (PS), polyurethane (PU), silicon dioxide (SiO2), magnesium hydroxide, calcium carbonate (CaCO3), barium sulphate (BaSO4), alundum (Al2O3) (Al2O3) or titania (TiO2) powder, and diffusion particle 314 is different from the material of main body 312.
Fig. 4 C illustrates the structural representation of an alternative embodiment of the down straight aphototropism mode set of Fig. 4 A.
With reference to Fig. 4 C, in this alternative embodiment, compared to Fig. 4 A, also irregular porous or porous vacuum interstitial structure or bubble layer can be placed, as shown in figure notation 318 near the side of quantum dot layer 310 and near the side cohesive position separately of blue led backlight 100 at the stilt of vacuum space gap layer 300.
Fig. 5 illustrates the structural representation of the side entrance back module according to an embodiment more of the present invention.With reference to Fig. 5, in this embodiment, quantum dot layer as previously described also can be applicable to side entrance back module.
Specifically, this side entrance back module comprises a reflector plate, multiple blue led backlight 400, vacuum space gap layer, quantum dot layer 410, light guide plate 402.Wherein, blue led backlight 100 is positioned over the incident side of light guide plate 402.It will be understood by those of skill in the art that the quantum dot layer of Fig. 3, Fig. 4 A or Fig. 4 C is equally also applicable to the quantum dot layer in Fig. 5, for convenience of description, do not repeat them here.
Adopt down straight aphototropism mode set of the present invention or side entrance back module, its reflector plate is arranged at the bottom of backlight module, multiple blue led backlights are positioned over the base of backlight module, vacuum space gap layer is arranged at top (corresponding to straight-down negative) or side (corresponding to the side entering type) of blue led backlight, and quantum dot layer is in order to be converted to blueness, green and red by the blue light of blue led backlight outgoing.On quantum dot layer or its inside comprises irregular porous or porous vacuum gap, form a mixed light space by vacuum space gap layer, irregular porous or porous vacuum gap and reflector plate, make the light of blue led backlight outgoing iterate through quantum dot layer through this mixed light space and then increase the saturation degree of color conversion.Compared to prior art, the vacuum space gap layer that the present invention utilizes thermal resistance exhausted and irregular porous converge quantum dot layer, the light of blue led backlight outgoing is enable to iterate through this quantum dot layer, and then the height realizing light reclaims, increase the efficiency of color conversion, thus blueness, green and the close white of red mixing after making conversion.
Above, the specific embodiment of the present invention is described with reference to the accompanying drawings.But those skilled in the art can understand, when without departing from the spirit and scope of the present invention, various change and replacement can also be done to the specific embodiment of the present invention.These change and replace and all drop in claims of the present invention limited range.
Claims (10)
1. a down straight aphototropism mode set, is characterized in that, described down straight aphototropism mode set comprises:
One reflector plate, is arranged at the bottom of described down straight aphototropism mode set;
Multiple blue led backlight, is positioned over the base of described down straight aphototropism mode set;
One vacuum space gap layer, is arranged at the top of described blue led backlight; And
One quantum dot layer, is arranged at a support portion, this support portion in order to maintain described vacuum space gap layer, this quantum dot layer in order to the blue light of described blue led backlight outgoing to be converted to blueness, green and red,
Wherein, on described quantum dot layer or its inside comprises irregular porous or porous vacuum gap, form a mixed light space by described vacuum space gap layer, described irregular porous or porous vacuum gap and described reflector plate, make the light of described blue led backlight outgoing iterate through described quantum dot layer by this mixed light space and then increase the saturation degree of color conversion.
2. down straight aphototropism mode set according to claim 1, is characterized in that, described vacuum space gap layer is parallel to light-emitting area and is of a size of A1, and the hole average-size of described irregular porous is A4, and A1>A4.
3. down straight aphototropism mode set according to claim 2, it is characterized in that, described down straight aphototropism mode set also comprises a reflecting plate, described reflecting plate has the multiple perforates along with described blue led backlight period profile, the average-size of described perforate is A3, and A1>A3>A4.
4. down straight aphototropism mode set according to claim 1, is characterized in that, light transmittance corresponding to described irregular porous or porous vacuum gap is between 5% to 50%.
5. down straight aphototropism mode set according to claim 1, is characterized in that, the size in described irregular porous or porous vacuum gap is between 0.1 micron to 2000 microns.
6. down straight aphototropism mode set according to claim 5, is characterized in that, the size in described irregular porous or porous vacuum gap is less than 10 microns.
7. down straight aphototropism mode set according to claim 1; it is characterized in that, described irregular porous or porous vacuum gap are polymethylmethacrylate, copolymer of methyl methacrylatestyrene, polypropylene, tygon, polyethylene terephthalate, cyclic olefin polymer, inorganic particle or glass material.
8. down straight aphototropism mode set according to claim 1, it is characterized in that, described quantum dot layer comprises a main body and multiple diffusion particle, quantum dot fluorescence powder is scattered in described diffusion particle, and described diffusion particle is uniformly distributed in described main body, the size of described quantum dot fluorescence powder is between 1nm and 10nm.
9. down straight aphototropism mode set according to claim 8, it is characterized in that, the material of described main body is polycarbonate, polymethylmethacrylate, copolymer of methyl methacrylatestyrene, polyethylene terephthalate, transparent polystyrene, cyclic olefine copolymer, silica gel, epoxy resin or silicon dioxide, the material of described diffusion particle is polymethylmethacrylate, copolymer of methyl methacrylatestyrene, acrylonitrile-butadiene-styrene copolymer resin, transparent polystyrene, polyurethane, silicon dioxide, magnesium hydroxide, calcium carbonate, barium sulphate, alundum (Al2O3) or titania powder, and described diffusion particle is different from the material of described main body.
10. a side entrance back module, comprises a light guide plate, it is characterized in that, described side entrance back module comprises:
One reflector plate, is arranged at the bottom of described side entrance back module;
Multiple blue led backlight, is positioned over the incident side of described light guide plate;
One vacuum space gap layer, is arranged between this blue led backlight and this light guide plate; And
One quantum dot layer, is arranged at a support portion, this support portion in order to maintain described vacuum space gap layer, this quantum dot layer in order to the blue light of described blue led backlight outgoing to be converted to blueness, green and red,
Wherein, on described quantum dot layer or its inside comprises irregular porous or porous vacuum gap, form a mixed light space by described vacuum space gap layer, described irregular porous or porous vacuum gap and described reflector plate, make the light of described blue led backlight outgoing iterate through described quantum dot layer by this mixed light space and then increase the saturation degree of color conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510486464.2A CN105068314A (en) | 2015-08-10 | 2015-08-10 | Direct light type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510486464.2A CN105068314A (en) | 2015-08-10 | 2015-08-10 | Direct light type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105068314A true CN105068314A (en) | 2015-11-18 |
Family
ID=54497716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510486464.2A Pending CN105068314A (en) | 2015-08-10 | 2015-08-10 | Direct light type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105068314A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700062A (en) * | 2016-04-12 | 2016-06-22 | 东莞轩朗实业有限公司 | Quantum dot glass light guide plate |
| CN105759500A (en) * | 2016-03-16 | 2016-07-13 | 深圳Tcl新技术有限公司 | Quantum dot backlight module and liquid crystal television |
| CN105842924A (en) * | 2016-03-29 | 2016-08-10 | 友达光电股份有限公司 | Backlight module |
| CN105953139A (en) * | 2015-12-16 | 2016-09-21 | 友达光电股份有限公司 | A backlight module |
| CN107688255A (en) * | 2017-09-11 | 2018-02-13 | 深圳市华星光电技术有限公司 | A kind of backlight module, quantum dot diaphragm and preparation method thereof |
| CN107861291A (en) * | 2017-10-24 | 2018-03-30 | 华为技术有限公司 | Backlight module, display screen and terminal |
| CN108549175A (en) * | 2018-04-13 | 2018-09-18 | 青岛海信电器股份有限公司 | A kind of quantum dot light emitting device, quantum dot backlight module, liquid crystal display device |
| CN109686240A (en) * | 2019-01-04 | 2019-04-26 | 京东方科技集团股份有限公司 | A kind of down straight aphototropism mode set and display device |
| TWI686459B (en) * | 2017-12-12 | 2020-03-01 | 奇美實業股份有限公司 | Luminescent material and electronic device having the display function using the same |
| CN111665662A (en) * | 2019-03-06 | 2020-09-15 | 夏普株式会社 | Illumination device and display device |
-
2015
- 2015-08-10 CN CN201510486464.2A patent/CN105068314A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953139A (en) * | 2015-12-16 | 2016-09-21 | 友达光电股份有限公司 | A backlight module |
| CN105759500A (en) * | 2016-03-16 | 2016-07-13 | 深圳Tcl新技术有限公司 | Quantum dot backlight module and liquid crystal television |
| WO2017156902A1 (en) * | 2016-03-16 | 2017-09-21 | 深圳Tcl新技术有限公司 | Quantum dot backlight module and liquid crystal television |
| US10209564B2 (en) | 2016-03-29 | 2019-02-19 | Au Optronics Corporation | Backlight module with porous optical film and a wavelength conversion layer disposed above a light source where the optical film has a plurality of light emission structures |
| TWI657293B (en) * | 2016-03-29 | 2019-04-21 | 友達光電股份有限公司 | Backlight module |
| CN105842924A (en) * | 2016-03-29 | 2016-08-10 | 友达光电股份有限公司 | Backlight module |
| CN105842924B (en) * | 2016-03-29 | 2019-08-23 | 友达光电股份有限公司 | Backlight module |
| CN105700062A (en) * | 2016-04-12 | 2016-06-22 | 东莞轩朗实业有限公司 | Quantum dot glass light guide plate |
| CN107688255A (en) * | 2017-09-11 | 2018-02-13 | 深圳市华星光电技术有限公司 | A kind of backlight module, quantum dot diaphragm and preparation method thereof |
| US10901263B2 (en) | 2017-10-24 | 2021-01-26 | Huawei Technologies Co., Ltd. | Backlight module, display screen, and terminal |
| CN107861291A (en) * | 2017-10-24 | 2018-03-30 | 华为技术有限公司 | Backlight module, display screen and terminal |
| TWI686459B (en) * | 2017-12-12 | 2020-03-01 | 奇美實業股份有限公司 | Luminescent material and electronic device having the display function using the same |
| US11512246B2 (en) | 2017-12-12 | 2022-11-29 | Chimei Corporation | Luminescent material and electronic device having a display function using the same |
| CN108549175A (en) * | 2018-04-13 | 2018-09-18 | 青岛海信电器股份有限公司 | A kind of quantum dot light emitting device, quantum dot backlight module, liquid crystal display device |
| CN109686240A (en) * | 2019-01-04 | 2019-04-26 | 京东方科技集团股份有限公司 | A kind of down straight aphototropism mode set and display device |
| CN109686240B (en) * | 2019-01-04 | 2021-03-12 | 京东方科技集团股份有限公司 | Direct type backlight module and display device |
| CN111665662A (en) * | 2019-03-06 | 2020-09-15 | 夏普株式会社 | Illumination device and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105068314A (en) | Direct light type backlight module | |
| KR101775260B1 (en) | Fluorescent films having adjustable color location and color gamut | |
| TWI570360B (en) | Lighting device | |
| KR102242876B1 (en) | Optical conversion film for backlight module, backlight module and display device | |
| TW201413348A (en) | Direct-type backlight module and diffuser structure | |
| CN103547963A (en) | Light conversion member and display device having the same | |
| CN104503137A (en) | Backlight module and liquid crystal display with same | |
| CN104067164A (en) | Display device | |
| WO2015081692A1 (en) | Light guide plate, backlight source and liquid crystal display apparatus | |
| CN105065995A (en) | Direct type backlight module | |
| KR20080063986A (en) | Diffusion sheet for wavelength changing and backlight unit using the same | |
| CN104360539B (en) | A kind of backlight module and liquid crystal display device | |
| CN104155803A (en) | Backlight module and liquid crystal display device | |
| TWI557483B (en) | Display device | |
| CN108594528A (en) | A kind of down straight aphototropism mode set, display device and preparation method thereof | |
| CN105242457A (en) | Light guide device with high color saturation | |
| KR102213094B1 (en) | Light guide plate unit using micro LED local dimming and Backlight unit having that Light guide plate unit | |
| US11320574B2 (en) | Light guide plate, backlight module and display device | |
| CN202813043U (en) | LED backlight source | |
| CN110389470A (en) | Backing structure and display device | |
| US20080170176A1 (en) | Backlight Module Having Phosphor Layer and Liquid Crystal Display Device Using the Same | |
| CN109870752B (en) | Laminated light diffusion plate capable of shortening light mixing distance and eliminating light source bright spots | |
| US20110051248A1 (en) | Hybrid Optical Film | |
| US20110305041A1 (en) | Light guide plate structure and backlight module using same | |
| JP3128067U (en) | Luminescent diffuser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151118 |
|
| WD01 | Invention patent application deemed withdrawn after publication |