CN105445994A - Light source module, backlight module and display device - Google Patents
Light source module, backlight module and display device Download PDFInfo
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- CN105445994A CN105445994A CN201510939577.3A CN201510939577A CN105445994A CN 105445994 A CN105445994 A CN 105445994A CN 201510939577 A CN201510939577 A CN 201510939577A CN 105445994 A CN105445994 A CN 105445994A
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- 239000012780 transparent material Substances 0.000 claims description 6
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Classifications
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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
- G02F1/133602—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
- G02F1/133602—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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- 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 discloses a light source module, a backlight module and a display device, and relates to the technical field of display. The problems that in the prior art, heating of a quantum dot tube is concentrated, and the service life of quantum dots is short are solved. The light source module comprises a substrate, a light-emitting diode, a light guide plate, a quantum dot layer and a light ray steering piece; the light-emitting diode is arranged on the substrate and emits light upwards; the light guide plate is located on the upper portion of the substrate, and a through hole is formed in the light guide plate and is opposite to the light-emitting diode; the light ray steering piece is arranged in the light outputting direction of the light-emitting diode and used for reflecting light rays emitted by the light-emitting diode and diffuses the light rays to a circle of the inner wall of a hollow tubular column. The light source module can be used for a liquid crystal display.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of light source module, backlight module and display device.
Background technology
LED (LightEmittingDiode, light emitting diode) be applied to LCD (LiquidCrystalDisplay at present, liquid crystal display) light source module on one of principal light source, different according to the position of LED in light source module, light source module can be divided into side entering type light source module and directly-down light source module.
Example, be illustrated in figure 1 the cross section structure schematic diagram of side entering type light source module, comprise: substrate 01, LED02, quantum dot pipe 03, quantum dot pipe holder 04 and light guide plate 05.Wherein, LED02 is arranged on substrate 01, quantum dot pipe 03 is supported on the light direction of LED02 by quantum dot pipe holder 04, quanta point material is packaged with in quantum dot pipe 03, the light that LED02 sends can enter excitation quantum point material in quantum dot pipe 03 and produce white light, the white light produced can enter in light guide plate 05 through the sidewall of light guide plate 05, the uniform light entering its inside can be diffused to regional by light guide plate 05, to realize quick mixed light, and evenly penetrated by the upper surface of light guide plate 05, provide area source to display device thus.Due to compared to traditional fluorescent powder, quanta point material has unique photoelectric characteristic, pure high-quality light can be sent, enable display device present outstanding imaged color, therefore adopt the display device of this light source module can realize the display of high colour gamut.
But, because LED02 is relative with a sidewall of quantum dot pipe 03, quantum dot pipe 03 is nearer apart from LED02, the light that LED02 sends concentrates the quanta point material in excitation quantum point pipe 03, the optical energy density of quantum dot pipe 03 is caused to concentrate, quanta point material in quantum dot pipe 03 excites the heat of generation many, quanta point material temperature in excitation process is caused to raise, a large amount of quanta point material is caused to lose efficacy, have a strong impact on the launching efficiency of quantum dot pipe, increase the failure probability of quanta point material, thus shorten the serviceable life of quanta point material.
Summary of the invention
Embodiments of the invention provide a kind of light source module, backlight module and display device, the energy that light emitting diode emits beam can be disperseed, quantum dot pipe is avoided to concentrate heating, ensure that light is to the launching efficiency of quantum dot, reduce the failure probability of quanta point material, thus extend the serviceable life of quanta point material.
For achieving the above object, The embodiment provides a kind of light source module, for backlight module, comprising: substrate; Light emitting diode, described light emitting diode is arranged on described substrate, and described light emitting diode is upwards luminous; Light guide plate, described light guide plate is positioned at the top of described substrate, and described light guide plate offers through hole, and described through hole is relative with described light emitting diode; Quantum dot layer, described quantum dot layer is arranged along the inwall of described through hole for one week, and described quantum dot layer includes quanta point material, and described quanta point material is packaged in hollow pipe column, described hollow pipe column is made by transparent material, and the outer wall of described hollow pipe column one week is relative with the inwall of described through hole; Turn light rays part, described turn light rays part is arranged on the light direction of described light emitting diode, diffuses to the inwall one week of described hollow pipe column for the light reflection that sent by described light emitting diode.
Preferably, described turn light rays part comprises back up pad and is arranged at the projection of described back up pad lower surface, described back up pad is arranged on the described through hole of described light guide plate upper surface, described projection stretches in the hollow area that described hollow pipe column surrounds, and the surface of described projection is used for the light reflection that sent by described light emitting diode and diffuses to the inwall one week of described hollow pipe column.
Preferably, the shape of described projection is conical or semisphere.
Preferably, described turn light rays part is made by transparent material, and the lower surface of described turn light rays part, the region relative with described light emitting diode are provided with reflective particle or reflect site, upper surface, the part relative with described light emitting diode of described turn light rays part are equipped with fluorescent powder or quanta point material.
Preferably, the lower surface of described back up pad is provided with annular slot in one week around described projection, and the upper end of described hollow pipe column can be connected in described annular slot.
Preferably, pad between described hollow pipe column and described substrate and be provided with soft material.
Preferably, the upper/lower terminal of described quantum dot layer all stretches out the setting of described through hole.
On the other hand, embodiments of the invention additionally provide a kind of backlight module, and described backlight module comprises the light source module described at least one technique scheme.
The third aspect, embodiments of the invention additionally provide a kind of display device, and described display device comprises the backlight module described in display panels and technique scheme, and described backlight module is just arranged described display panels.
A kind of light source module, backlight module and display device that the embodiment of the present invention provides, turn light rays part is arranged on the light direction of light emitting diode, this turn light rays part is used for the light reflection that sent by light emitting diode and diffuses to the inwall one week of hollow pipe column, the light portion entering open column participates in the quanta point material exciting encapsulation in hollow pipe column, excite the light of generation to be mixed to form white light with the light directly transmitted through hollow pipe column, the white light be mixed to form finally enters light guide plate inside through the incidence surface of light guide plate.The light adopting turn light rays part to be sent by light emitting diode thus reflects and is dispersed to the inwall one week of hollow pipe column, and enter in quantum dot layer through the inwall of hollow pipe column, thus power dissipation light emitting diode being sent light is in the annular region residing for quantum dot layer, the light sent compared to light emitting diode in prior art concentrates the quanta point material in excitation quantum pipe, the light source module of the embodiment of the present invention is by turn light rays part, after the light reflection sent by light emitting diode changes direction, be dispersed in the annular region residing for quantum dot layer, reduce the optical energy density that quantum dot layer is corresponding, effectively quanta point material in quantum dot layer excitation process has been disperseed to excite the heat of generation, avoid the quanta point material that in quantum dot layer, quanta point material causes because excitation temperature is too high to lose efficacy, thus extend the serviceable life of quanta point material.
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 prior art side entering type light source module;
Fig. 2 is one of structural representation of embodiment of the present invention light source module;
Fig. 3 is the structural representation two of embodiment of the present invention light source module;
Fig. 4 is one of travel path schematic diagram of light in embodiment of the present invention light source module;
Fig. 5 is the travel path schematic diagram two of light in embodiment of the present invention light source module;
Fig. 6 is the structural representation of embodiment of the present invention backlight module;
Fig. 7 is the arrangement architecture schematic diagram of light source module in embodiment of the present invention backlight module;
Fig. 8 is the structural representation of embodiment of the present invention display device.
Embodiment
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.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
The backlight module that display device comprises display panel and is oppositely arranged with display panel, wherein backlight module comprises backboard, light source module and optical diaphragm group etc., its dorsulum is used for supporting light sources module, the light that optical diaphragm group sends for optimizing light source module, light source module is the core component of backlight module, for providing uniform planar light source to backlight module, light source module comprises substrate, light emitting diode, quantum dot layer and light guide plate, quanta point material in the optical excitation quantum dot layer that light emitting diode sends forms white light, quanta point material has unique photoelectric characteristic, pure high-quality light can be sent, the colour gamut of display device can be brought up to more than 100%, make the color representation of display device more saturated true to nature, Picture Showing more has visual impact.Quanta point material in quantum dot layer is packaged in transparent medium, meanwhile, is provided with multiple light guiding points not of uniform size in light guide plate, fast the light entered in light guide plate can be diffused to whole light guide plate region, and evenly be penetrated by upper surface.
With reference to shown in Fig. 2, Fig. 2 is a specific embodiment of embodiment of the present invention light source module, and the light source module of the embodiment of the present invention comprises: substrate 1; Light emitting diode 2, described light emitting diode 2 is arranged on described substrate 1, and described light emitting diode 2 is upwards luminous; Light guide plate 3, described light guide plate 3 is positioned at the top of described substrate 1, and described light guide plate 3 offers through hole 31, and described through hole 31 is relative with described light emitting diode 2; Quantum dot layer 5, the inwall that described quantum dot layer 5 presses close to described through hole 31 is arranged for one week, described quantum dot layer 5 includes quanta point material, and described quanta point material is packaged in hollow pipe column, described hollow pipe column is made by transparent material, and the outer wall of described hollow pipe column one week is relative with the inwall of described through hole 31; Turn light rays part 4, described turn light rays part 4 is arranged on the light direction of described light emitting diode 2, diffuses to the inwall one week of described hollow pipe column for the light reflection that sent by described light emitting diode.
Example, the light emitting diode of the embodiment of the present invention is LED luminescence chip, and LED luminescence chip is upwards luminous, and its emission of light is similar to Lambertian radiator, and lighting angle is 120 °.
Shown in figure 5, a kind of light source module that the embodiment of the present invention provides, turn light rays part 4 is arranged on the light direction of light emitting diode 2, this turn light rays part 4 is for the light reflection that sent by light emitting diode 2 and diffuse to the inwall one week of hollow pipe column, the light portion entering hollow pipe column participates in the quanta point material exciting encapsulation in hollow pipe column, the light of generation is excited to be mixed to form white light with the light directly transmitted through hollow pipe column, the white light be mixed to form finally enters light guide plate 3 inside through the incidence surface of light guide plate 3, its light transmition path as shown in Figure 4, adopt turn light rays part 4 to be reflected by the light that light emitting diode 2 sends thus and be dispersed to the inwall one week of hollow pipe column, and enter in quantum dot layer 5 through the inwall of hollow pipe column, thus power dissipation light emitting diode 2 being sent light is in the annular region residing for quantum dot layer 5, the light sent compared to light emitting diode in prior art concentrates the quanta point material in excitation quantum pipe, the light source module of the embodiment of the present invention is by turn light rays part 4, after the light reflection sent by light emitting diode 2 changes direction, be dispersed in the annular region residing for quantum dot layer 5, reduce the optical energy density that quantum dot layer is corresponding, effectively quanta point material in quantum dot layer 5 excitation process has been disperseed to excite the heat of generation, avoid the quanta point material that in quantum dot layer 5, quanta point material causes because excitation temperature is too high to lose efficacy, thus extend the serviceable life of quanta point material.
In the above-described embodiments, light emitting diode 2 can burn red, green light or blue light, generate white light to realize red, green, blue three mixture of colours, when light emitting diode 2 burn red, quantum dot layer 5 includes the quantum dot exciting and produce green light and the quantum dot exciting generation blue light; When light emitting diode 2 glow green, quantum dot layer 5 includes the quantum dot exciting and produce blue light and the quantum dot exciting generation red light; When light emitting diode 2 turns blue coloured light, quantum dot layer 5 includes the quantum dot exciting and produce green light and the quantum dot exciting generation red light.Due to compared to red light and green light, the frequency of blue light is the highest, and energy is larger, be conducive to exciting of quantum dot, therefore, hereafter only to turn blue coloured light with light emitting diode 2, quantum dot layer 5 includes the quantum dot that excites and produce green light and excites the quantum dot producing blue light to be that example is described.
Wherein, substrate 1 can be the backboard or installing plate etc. of circuit board, display device, does not limit at this.For the material of substrate 1, can preferred heat sink material, the heat produced with the luminescence of rapid dispersion light emitting diode.
In addition, do not limit the thickness of quantum dot layer 5, particularly, the intensity that can send blue light according to light emitting diode 2 adjusts, with the demand of satisfied different brightness.
Moreover, in quantum dot layer 5 comprise the proportioning of quanta point material, the present invention does not limit, concrete, as long as can realize exciting the light of generation to be mixed to form white light with the light directly transmitted through quantum dot layer 5.
In order to the blu-ray reflection sent by light emitting diode 2 is in quantum dot layer 5, concrete, turn light rays part 4 can be made as structure as shown in Figure 2, namely turn light rays part 4 comprises back up pad 41 and is arranged at the projection 42 of back up pad 41 lower surface, this back up pad 41 is covered on through hole 31 place of light guide plate 3 upper surface, to realize supporting, this projection 42 stretches in the hollow area that hollow pipe column surrounds, and the surface of protruding 42 is used for reflected incident light and diffuses to the inwall one week of hollow pipe column, thus the blue light making light emitting diode 2 send can produce reflection on the surface of protruding 42, blue light after reflection can enter the inwall one week of hollow pipe column.It should be noted that, the light that light emitting diode 2 sends, except entering except quantum dot layer 5 after turn light rays part 4 reflects, directly can also enter in quantum dot layer 5 shown in the transmission path of c light and c ' light as shown in Figure 5.
Wherein, the breadth extreme of protruding 42 is not limited, preferably, the breadth extreme of protruding 42 should be slightly less than the internal diameter of hollow pipe column, farthest incident ray is reflexed in quantum dot layer 5, reserve expansion space to turn light rays part 4 expanded by heating simultaneously, rack hollow pipe column to prevent turn light rays part 4 expanded by heating.
In addition, in order to make projection 42 all equal to the energy of pollodic light, thus improve the homogeneity entering the light in light guide plate 3 along through hole for 31 1 weeks, and then improve the even light mixing of light guide plate 3, protruding shape can be pyramid type as shown in Figure 2, also can be semisphere as shown in Figure 3.Conical and the hemispheric surface of protruding 42 is all equal to the energy of pollodic light, the white light that after the light reflected enters quantum dot layer 5, excitation quantum point produces evenly can enter in light guide plate 3 along through hole for 31 1 weeks, thus improve the even light mixing of light guide plate 3, the optical energy density of quantum dot layer 5 local can also be avoided to concentrate simultaneously, what improve quanta point material in quantum dot layer 5 excites homogeneity, further avoid local quanta point material in quantum dot layer and loses efficacy because exciting the too high quanta point material that causes of generation heat.
Incident ray can be reflected to make protruding 42 and diffuse to along on the whole hollow pipe column inwall of hollow pipe column central axial direction, preferably, as shown in Figure 5, incident ray (i.e. a light as shown in Figure 5 and a ' light) can be reflexed to the lower edge of hollow pipe column away from one end of back up pad 41 by protruding 42, incident ray can be reflexed to the region of more than hollow pipe column lower edge by the sidewall of protruding 42, it can thus be appreciated that, incident ray can reflex on whole hollow pipe column inwall by protruding 42, thus by the power dissipation of incident ray to whole hollow pipe column inwall, further avoid quantum dot layer and concentrate heating, ensure that the launching efficiency of light to quantum dot, reduce the failure probability of quantum dot, extend the serviceable life of quantum dot.
In order to improve the utilization factor that light emitting diode 2 emits beam, preferably, as shown in Figure 5, the light (c light as shown in Figure 5 and c ' light) penetrated along the maximum emergence angle of light emitting diode 2 (one-sided be about 60 °) reflexes to the inwall of hollow pipe column by turn light rays part 4, or directly inject the inwall of hollow pipe column, inject quantum dot layer 5 for backlight farthest to be emitted beam by light emitting diode 2, which thereby enhance the utilization factor that light emitting diode emits beam.
The launching efficiency of quantum dot is affected in order to prevent from not being excited because of part quantum dot or postponing to excite, preferably, the cross sectional shape of hollow pipe column is circular, and the axis conllinear of hollow pipe column and conical protrusions 42, make the surface of conical protrusions 42 can enter in the quantum dot layer 5 of hollow pipe column sidewall with identical energy to pollodic light simultaneously, thus make the quantum dot in quantum dot layer 5 obtain simultaneously and effectively excite, and then improve the launching efficiency of quantum dot in quantum dot layer 5.
And, the white light produced to enable quantum dot layer 5 evenly enters in the light guide plate 3 of through hole 31 surrounding, preferably, the shape of through hole 31 is circular, and the axis conllinear of through hole 31 and hollow pipe column, make quantum dot layer 5 can enter the inwall of through hole 31 with identical energy along the white light that hollow pipe column outer wall evenly produces for a week simultaneously, and enter in light guide plate 3 through through hole 31 inwall, thus the white light produced after making excitation quantum point enters in the light guide plate 3 of through hole 31 surrounding equably.
As a kind of embodiment, lower surface, the region relative with light emitting diode 2 of turn light rays part 4 can be covered with reflecting material, to reflect the light of all incidence so far in region, to realize the reflection of light.
As another kind of embodiment, as shown in Figure 2, turn light rays part 4 is made by transparent material, and the lower surface of turn light rays part 4 region relative with light emitting diode 2 is provided with reflective particle or reflects site, the part that the upper surface of turn light rays part 4 is relative with light emitting diode 2 is equipped with fluorescent powder 7 or quanta point material, thus make turn light rays part 4 can antireflection part light simultaneously can transmission part light, the light of transmission can excitation line tumbler 4 upper surface fluorescent powder or quanta point material to produce white light and upwards to penetrate, can avoid display device that generation blackening in light bridgeware 4 place is being set thus.
It should be noted that, in order to ensure that the emitting brightness of regional transmission is consistent with the emitting brightness in light guide plate 3, the transmittance and reflectance ratio of light regulating can be carried out by the density adjusting reflective particle or reflection site, such as: the ratio of reflection ray can be 90% ~ 98%, the ratio of transmitted ray can be 2% ~ 10%.
Example, fluorescent powder 7 for comprising the potpourri of red fluorescence powder and green emitting phosphor, can be also directly YAG (YttriumAluminateGarnet, yttrium aluminum garnet) fluorescent powder, being not specifically limited at this.
In order to realize being connected and fixed of hollow pipe column, preferably, as shown in Figure 2, the lower surface of back up pad 41, around protruding 42 within one week, be provided with annular slot 43, the upper end of hollow pipe column can be connected in annular slot 43, thus achieving removably connecting of hollow pipe column and back up pad 41, this connected mode can save maintenance cost.
In order to provide certain anchorage force to hollow pipe column, preferably, as shown in Figure 2, pad between hollow pipe column and substrate 1 and be provided with soft material 6, this soft material 6 can provide certain anchorage force to hollow pipe column, and soft material 6 can prevent from producing opposing compression between hollow pipe column and substrate 1 and damaging hollow pipe column or substrate 1, particularly, this soft material 6 can be silicagel pad or foam etc., does not limit at this.
The influence of light visual effect that the blue light sent to prevent light emitting diode 2 directly enters light guide plate 3 and light guide plate 3 is sent, preferably, the upper/lower terminal of quantum dot layer 5 all stretches out through hole 31 and arranges, and the inwall that the blue light sent to avoid light emitting diode 2 as much as possible directly passes through hole 31 enters in light guide plate 3 and affects visual effect.
Broken in order to prevent hollow pipe column expanded by heating and light guide plate 3 from occurring to extrude, preferably, the outer wall of hollow pipe column and light guide plate 3 leave certain interval between through hole 31 inwall, prevent hollow pipe column expanded by heating from extruding and broken occurring.
As shown in Figure 6, embodiments of the invention additionally provide a kind of backlight module 400, and described backlight module 400 comprises at least one light source module 100 as above described in arbitrary technical scheme.
Because the light source module 100 used in the backlight module 400 of the present embodiment is identical with the light source module provided in each embodiment of above-mentioned light source module, therefore the two can solve identical technical matters, and reaches identical Expected Results.
In the above-described embodiments, as shown in Figure 6, backlight module 400, except comprising light source module 100, also comprises backboard 200 and optical diaphragm group 300.Wherein, light source module 100 is arranged on backboard 200, and backboard 200 is for supporting this light source module 100, and optical diaphragm group 300 is arranged at above light source module 100, for optimizing the area source that light source module 100 sends.Example, as shown in Figure 6, optical diaphragm group 300 can comprise diffusion sheet 301, prismatic lens 302 and brightness enhancement film 303.
Wherein, the backlight module 400 that the embodiment of the present invention provides, its light source module 100 can be set to one, and by increasing the power of light emitting diode 2, can realize the display of whole display panel, the production cost of display device is lower thus.
In addition, in order to the dynamic backlight realizing display device controls, as shown in Figure 6, light source module 100 can be multiple, and uniform spreading is located at the upper surface of backboard 200, can be controlled to realize dynamic backlight by the independent control of each light source module 100 thus, thus the display effect of display device can be improved.
In order to improve the dynamic backlight effect of display device, reflecting material can be coated with by the sidewall of light guide plate in light source module 100, with the mutual propagation stoping adjacent two light source modules 100 to emit beam, light source module 100 completely independently can be controlled, thus enhance the dynamic backlight effect of light source module 100.
In order to reduce the thickness of display device, the multiple light source modules 100 being layed in backboard 200 upper surface can be mutually close to for adjacent as shown in Figure 7 two light source module 100 sidewalls or connect into an entirety, the exiting surface of multiple light source module 100 is made jointly to form the exiting surface of display device, realize whole uniform plane bright dipping, reduce the light mixing distance of backlight module 400 further, thus reduce the thickness of display device.
Preferably, substrate 1 in light source module 100 can be pasted by screw or heat conduction and be fixed on backboard 200, thus achieve the connection of light source module 100 and backboard 200, and screw or heat conduction are pasted and by the heat conduction in light source module 100 on backboard 200, can be beneficial to heat radiation.
As shown in Figure 8, embodiments of the invention additionally provide a kind of display device, and described display device comprises display panels 500 and the backlight module as above described in technical scheme 400, and described backlight module 400 is just arranged described display panels 500.
Because the backlight module 400 used in the display device of the present embodiment is identical with the backlight module provided in each embodiment of above-mentioned backlight module, therefore the two can solve identical technical matters, and reaches identical Expected Results.
Other formations about embodiment of the present invention display device wait known by those skilled in the art, no longer describe in detail at this.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. a light source module, for backlight module, is characterized in that, comprising:
Substrate;
Light emitting diode, described light emitting diode is arranged on described substrate, and described light emitting diode is upwards luminous;
Light guide plate, described light guide plate is positioned at the top of described substrate, and described light guide plate offers through hole, and described through hole is relative with described light emitting diode;
Quantum dot layer, described quantum dot layer is arranged along the inwall of described through hole for one week, and described quantum dot layer includes quanta point material, and described quanta point material is packaged in hollow pipe column, described hollow pipe column is made by transparent material, and the outer wall of described hollow pipe column one week is relative with the inwall of described through hole;
Turn light rays part, described turn light rays part is arranged on the light direction of described light emitting diode, diffuses to the inwall one week of described hollow pipe column for the light reflection that sent by described light emitting diode.
2. light source module according to claim 1, it is characterized in that, described turn light rays part comprises back up pad and is arranged at the projection of described back up pad lower surface, described back up pad is arranged on the described through hole of described light guide plate upper surface, described projection stretches in the hollow area that described hollow pipe column surrounds, and the surface of described projection is used for the light reflection that sent by described light emitting diode and diffuses to the inwall one week of described hollow pipe column.
3. light source module according to claim 2, is characterized in that, the shape of described projection is conical or semisphere.
4. light source module according to claim 1, it is characterized in that, described turn light rays part is made by transparent material, and the lower surface of described turn light rays part, the region relative with described light emitting diode are provided with reflective particle or reflect site, upper surface, the part relative with described light emitting diode of described turn light rays part are equipped with fluorescent powder or quanta point material.
5. light source module according to claim 2, is characterized in that, the lower surface of described back up pad is provided with annular slot in one week around described projection, and the upper end of described hollow pipe column can be connected in described annular slot.
6. light source module according to claim 1, is characterized in that, pad and be provided with soft material between described hollow pipe column and described substrate.
7. light source module according to claim 1, is characterized in that, the upper/lower terminal of described quantum dot layer all stretches out described through hole and arranges.
8. a backlight module, is characterized in that, described backlight module comprises at least one light source module according to any one of claim 1 ~ 7.
9. a display device, is characterized in that, described display device comprises display panels and backlight module as claimed in claim 8, and described backlight module is just arranged described display panels.
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |