CN104483778B - Light-emitting device, backlight module and liquid crystal display device - Google Patents

Light-emitting device, backlight module and liquid crystal display device Download PDF

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Publication number
CN104483778B
CN104483778B CN201410855442.4A CN201410855442A CN104483778B CN 104483778 B CN104483778 B CN 104483778B CN 201410855442 A CN201410855442 A CN 201410855442A CN 104483778 B CN104483778 B CN 104483778B
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light
emitting component
blooming piece
fluorescent material
white
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CN104483778A (en
Inventor
苏世虎
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Tianma Microelectronics Co Ltd
Shanghai AVIC Optoelectronics Co Ltd
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Tianma Microelectronics Co Ltd
Shanghai AVIC Optoelectronics Co Ltd
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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
    • G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
    • 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)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Liquid Crystal (AREA)
  • Led Device Packages (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A kind of light-emitting device, backlight module and liquid crystal display device.Light-emitting device of the present invention excites luminous and quantum dot two ways to send white light using fluorescent material simultaneously, compared with prior art is only with the light-emitting device of quantum dot light emitting mode, the white brightness sent is higher, while higher color saturation can also be provided for display device.Backlight module of the present invention excites luminous and quantum dot two ways to send white light using fluorescent material simultaneously, compared with prior art is only with the backlight module of quantum dot light emitting mode, the white brightness sent is higher, while higher color saturation can also be provided for display device.Liquid crystal display device of the present invention includes backlight module provided by the invention, has more preferable display effect.

Description

Light-emitting device, backlight module and liquid crystal display device
Technical field
The present invention relates to field of liquid crystal display, more particularly to a kind of light-emitting device, backlight module and liquid crystal display device.
Background technology
Liquid crystal display device is in light weight with small volume, is widely used in various fields the advantages that Low emissivity.
Liquid crystal display device is generally made up of several parts such as liquid crystal display panel, backlight module and drive circuit board. Wherein, backlight module is located at below liquid crystal display panel, to the white light of liquid crystal display panel output from bottom to top.LCD There are multiple liquid crystal light valves on plate, can by controlling the rotation of liquid crystal molecule, regulation through liquid crystal panel light, meanwhile, with Color membrane substrates are engaged the purpose for reaching colored display.
Backlight module is part main in liquid crystal display device.Wherein, the brightness of liquid crystal display device, color are satisfied With degree etc. important parameter it is all relevant with the performance of backlight module.Those skilled in the art propose one kind with quantum film and light-emitting component The backlight module of collocation, to improve the color saturation of liquid crystal display device.
With reference to figure 1, a kind of schematic diagram of side entrance back module of prior art is shown.The backlight module includes backboard Framework, and be embedded in the opening of the backboard framework, reflector plate 40, light guide plate 30, the quantum set gradually from bottom to top Film 50 and multi-layer optical membrane 60；LED light-emitting component 10 is provided with the side wall of the opening, the LED light-emitting component 10 is sent out Go out blue light, the blue light deflects the direction of propagation of the blue light from light guide plate 30, light guide plate 30 is laterally entered, and makes the blue light Into in the quantum film 50 on light guide plate 30.The backboard framework includes backboard 20 and glue frame 70, and the LED light-emitting component 10 is logical Cross glue frame 70 and backboard 20 is bonded together.
Quantum dot is dispersed with the quantum film 50, some blue light can be converted into feux rouges and green glow by the quantum dot, The feux rouges and green glow, and blue light of the part to convert export into white light from the quantum film 50.It is this it is red, green, Backlight of the white light that blue three color light is mixed into as liquid crystal display panel, the saturation degree of liquid crystal display device can be effectively improved.
But some blue light is converted into the process of feux rouges and green glow by quantum film 50, certain light intensity loss can be caused, is made It is relatively low to obtain the white brightness that quantum film 50 exports, influences the performance of liquid crystal display device.
The content of the invention
The present invention solves the problems, such as to be to provide a kind of light-emitting device, backlight module and liquid crystal display device, in raising liquid crystal While display device color saturation, the brightness of liquid crystal display device is improved.
In order to solve the above problems, the present invention provides a kind of light-emitting device, including：
LED luminescent wafers；
The protection structure of the LED luminescent wafers is coated, fluorescent material is provided with the protection structure；
The first blooming piece being arranged on outside the protection structure, quantum dot is dispersed with first blooming piece；
The fluorescent material can be excited by the part light that the LED luminescent wafers are sent, so as to ejecting white light；From described Another part light that LED luminescent wafers are sent is converted into white light after first blooming piece is reached.
Compared with prior art, in technical scheme, the LED luminescent wafers in the light-emitting device are used to send out Light, the fluorescent material can be excited by the part light that the LED luminescent wafers are sent, so as to ejecting white light；Sent out from the LED Another part light that light chip is sent is converted into white after first blooming piece is reached by way of quantum dot light emitting Light.The fluorescent material light excites the light conversion ratio of conversion white light higher than the light conversion ratio of quantum dot light emitting, that is to say, that same The light difference incident fluorescence powder of sample light intensity and the first blooming piece, the white light of fluorescent material output are whiter than what the first blooming piece exported Light has higher brightness, and therefore, light-emitting device of the present invention excites luminous and two kinds of sides of quantum dot light emitting using fluorescent material simultaneously Formula sends white light, and compared with prior art is only with the light-emitting device of quantum dot light emitting mode, the white brightness sent is higher, together When as a result of the first blooming piece with quantum dot so that when the light-emitting device serves as the backlight module of display device, Make display device that there is higher color saturation.
The present invention also provides a kind of backlight module, including：
Light-emitting component, for lighting；
First blooming piece, quantum dot is dispersed with first blooming piece, for send the light-emitting component Non-white light is converted into white light；
Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light-emitting component Light conduct to first blooming piece；
The backlight module is in the light-emitting component or in the light-emitting component between first blooming piece Light path on be additionally provided with fluorescent material, the fluorescent material is used to be excited by non-white light and send white light, what the fluorescent material was sent White light exports through the first blooming piece.
In backlight module provided by the invention, quantum dot is dispersed with first blooming piece, for that described will light The non-white light that element is sent is converted into white light, in the light-emitting component or in the light-emitting component to first optical film Fluorescent material is additionally provided with light path between piece, the fluorescent material is used to be excited by non-white light and send white light, the fluorescent material The white light sent exports through the first blooming piece.The fluorescent material light excites the light conversion ratio of conversion white light to be sent out than quantum dot The light conversion ratio of light is higher, that is to say, that the light difference incident fluorescence powder of same light intensity and the first blooming piece, that is to say, that The non-white light difference incident fluorescence powder of same light intensity and the first blooming piece, the white light of fluorescent material output are more defeated than the first blooming piece The white light gone out has higher brightness, and therefore, backlight module of the present invention excites luminous and quantum dot light emitting using fluorescent material simultaneously Two ways sends white light, compared with prior art is only with the backlight module of quantum dot light emitting mode, the white brightness that sends It is higher, while can make display device that also there is higher color saturation.
The present invention also provides a kind of liquid crystal display device, including backlight module provided by the invention and positioned at the backlight Liquid crystal display panel on module.Backlight mould due to backlight module of the present invention with prior art only with quantum dot light emitting mode Group is compared, and the white brightness sent is higher, while also has higher color saturation, therefore liquid crystal display device of the present invention is simultaneous Has the advantages of high color saturation and high brightness.
Brief description of the drawings
Fig. 1 is the schematic diagram of prior art backlight module；
Fig. 2 is the schematic diagram of light-emitting device first embodiment of the present invention
Fig. 3 is the schematic diagram of light-emitting component in light-emitting device shown in Fig. 2；
Fig. 4 is the schematic diagram of light-emitting device second embodiment of the present invention；
Fig. 5 is the schematic diagram of light-emitting component in light-emitting device 3rd embodiment of the present invention；
Fig. 6 is the schematic diagram of light-emitting component in light-emitting device fourth embodiment of the present invention；
Fig. 7 is the schematic diagram of light-emitting component in the embodiment of light-emitting device the 5th of the present invention；
Fig. 8 is the schematic diagram of light-emitting component in light-emitting device sixth embodiment of the present invention；
Fig. 9, Figure 10 are the schematic diagrames of backlight module first embodiment of the present invention；
Figure 11, Figure 12 are the schematic diagrames of backlight module second embodiment of the present invention；
Figure 13 is the sectional view of backlight module 3rd embodiment of the present invention；
Figure 14 is the sectional view of backlight module fourth embodiment of the present invention；
Figure 15 is the sectional view of the embodiment of backlight module the 5th of the present invention；
Figure 16 is the sectional view of backlight module sixth embodiment of the present invention；
Figure 17 is the sectional view of the embodiment of backlight module the 7th of the present invention；
Figure 18 is the sectional view of the embodiment of backlight module the 8th of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention Embodiment be described in detail.
As described by background technology, although liquid crystal display dress can be improved using the backlight module of quantum film in the prior art The color saturation put, but can make it that display brightness is poor.
In view of the above-mentioned problems, a kind of light-emitting device, backlight module and liquid crystal display device are provided in the embodiment of the present invention, While improving liquid crystal display device color saturation, the brightness of liquid crystal display device is improved.
In the light-emitting device of the present invention, LED luminescent wafers are used to light, and the fluorescent material can be lighted by the LED The part light that chip is sent excites, so as to ejecting white light；Another part light sent from the LED luminescent wafers is described in arrival After first blooming piece, white light is converted into by way of quantum dot light emitting.The fluorescent material light excites the light of conversion white light Conversion ratio is higher than the light conversion ratio of quantum dot light emitting, that is to say, that the light difference incident fluorescence powder of same light intensity and the first light Learn diaphragm, that is to say, that the light difference incident fluorescence powder of same light intensity and the first blooming piece, the white light of fluorescent material output is than the The white light of one blooming piece output has higher brightness, and therefore, light-emitting device of the present invention is excited luminous using fluorescent material simultaneously White light is sent with quantum dot light emitting two ways, compared with prior art is only with the light-emitting device of quantum dot light emitting mode, hair The white brightness gone out is higher, and when serving as the backlight module of display device with the light-emitting device, can have display device Higher color saturation.
Technical scheme is described further with reference to specific embodiment.Fig. 2 shows hair of the present invention The schematic diagram of electro-optical device first embodiment, in the first embodiment, the light-emitting device include the optics of light-emitting component 100 and first Diaphragm 200, Fig. 3 are the schematic diagram of light-emitting component 100 in Fig. 2.
With reference to reference to figure 2, Fig. 3, specifically, the present embodiment light-emitting device includes：
LED luminescent wafers 101, for lighting.
The protection structure of the LED luminescent wafers 101 is coated, fluorescent material is provided with the protection structure.It is described luminous Element 100 includes the LED luminescent wafers 101 and protection structure.
The first blooming piece 200 being arranged on outside the protection structure, quantum is dispersed with first blooming piece 200 Point 201.
In the present embodiment, the LED luminescent wafers 101 have exiting surface G1, and first blooming piece 200 is arranged on institute The side of the exiting surface of LED luminescent wafers 101 is stated, and in the light path of the light sent in the LED luminescent wafers 101.
In the present embodiment, the LED luminescent wafers 101 send blue light, and the fluorescent material includes yellow fluorescent powder, Huang Hong One kind in mixed fluorescent powder or red green mixed fluorescent powder.But the invention is not limited in this regard, optionally, in other embodiment In, the LED luminescent wafers 101 can be sent out ultraviolet light.
With continued reference to Fig. 3, in the present embodiment, the protection structure includes：
Coat the protective clear layer 102 of the exiting surface of LED luminescent wafers 101；
Housing 104, the protective clear layer 102 and LED luminescent wafers 101 are embedded in the housing 104, the housing 104 expose the protective clear layer 102.
In the present embodiment, the protective clear layer 102 includes central area 1021 and the week around the central area Border area domain 1022, the fluorescent material are distributed in the neighboring area 1022.
With continued reference to Fig. 3, the fluorescent material can be swashed by some blue light 010 that the LED luminescent wafers 101 are sent Hair, so as to ejecting white light 030, that is to say, that some blue light 010 is converted into white light by the fluorescent material.From the luminous crystalline substances of the LED After another part blue light 010 that piece 101 is sent is by protective clear layer 102, still it is emitted with blue light 010.
Optionally, the material of the protective clear layer 102 is transparent resin.
It should be noted that in other embodiments, when the light that the LED luminescent wafers 101 are sent be ultraviolet light etc. its During his non-white light, other kinds of fluorescent material can also be set in protection structure, part non-white light is converted into white light, this hair It is bright that this is not limited.
It should also be noted that, the present invention is not also limited the position that fluorescent material is set in the protection structure, at it In his embodiment, the fluorescent material can also be arranged in the other positions in the protection structure.
With reference to referring to figs. 2 and 3 specifically, because the LED luminescent wafers 101 have exiting surface G1, first light Learn diaphragm 200 and be arranged on the side of the exiting surface G1 of LED luminescent wafers 101, and sent in the LED luminescent wafers 101 In the light path of light.
In the neighboring area 1022 of the protective clear layer 102, the fluorescent material is excited and sent by some blue light 010 White light 030, it is still defeated with white light 030 after the white light 030 sent from neighboring area 1022 reaches first blooming piece 200 Go out.
Fluorescent material is not provided with the central area 1021 of protective clear layer 102, is sent out from the LED luminescent wafers 101 Another part blue light 010 gone out is converted by being still blue light behind central area 1021 after first blooming piece 200 is reached For white light 030.
Specifically, the scattered quantum dot 201 of first blooming piece 200, can be converted into feux rouges by some blue light 010 And green glow, the feux rouges and green glow, and part are mixed into white light 030 for the blue light 010 of conversion, from first blooming piece Exported in 200.Backlight of the white light 030 that this red, green, blue three coloured light is mixed into as liquid crystal display device, can effectively be carried The saturation degree of high liquid crystal display device.
The fluorescent material light excites the light conversion ratio of conversion white light higher than the light conversion ratio of quantum dot light emitting, that is, Say, the blue light 010 of same light intensity distinguishes incident fluorescence powder and the first blooming piece 200, the white light 030 to the first of fluorescent material output The white light 030 of blooming piece output has higher brightness, and therefore, the present embodiment light-emitting device excites hair using fluorescent material simultaneously Light and quantum dot 201 two ways that lights send white light 030, the light-emitting device phase with prior art only with quantum point mode Than the brightness of white light 030 sent is higher, and when serving as the backlight module of display device with the light-emitting device, can make display Device has higher color saturation.
It should be noted that the fluorescent material conversion blue light converts indigo plant for the light conversion ratio quantum dot 201 of white light Light is higher for the light conversion ratio of white light, therefore, in the present embodiment, thus it is possible to vary central area 1021 and neighboring area 1022 are divided The area ratio of the exiting surface of protective clear layer 102 is not accounted for, adjusts and the blue light luminous flux of white light is converted into being measured by the fluorescent material The blue light luminous flux for being converted into white light of son point 201 accounts for the ratio that the LED luminescent wafers 101 send the total light flux of blue light respectively Example, and then adjust the white brightness that the present embodiment light-emitting device is sent.When the blue light light that white light is converted into by the fluorescent material Flux account for the total light flux that the LED luminescent wafers 101 send blue light ratio it is bigger when, the present embodiment light-emitting device is sent White brightness it is higher.
In the present embodiment, when the blue light luminous flux that white light is converted into by the fluorescent material accounts for the LED luminescent wafers 101 When the ratio for sending the total light flux of blue light is 50%, the light-emitting device phase with prior art only with quantum dot light emitting mode Than the brightness that the present embodiment light-emitting device sends white light can lift 51.61%.
It should be noted that in the present embodiment, first blooming piece 200 and the LED luminescent wafers 101 go out Smooth surface G1 is oppositely arranged.Therefore the present embodiment light-emitting device can be applied to down straight aphototropism mode set.
It should be noted that in the present embodiment, electrode 103 is additionally provided with the protection structure, for being sent out for the LED Light chip 101 is powered.
It should be noted that Fig. 3 is the sectional view of light-emitting component 100, the shape of the upper surface of light-emitting component 100 is not shown, In the light-emitting component of the present invention, the surface that the housing 104 exposes the protective clear layer 102 is the first upper surface G2, described First upper surface G2 of housing 104 can be the arbitrary shapes such as rectangle, circle, and the protective clear layer 102 is sent out away from the LED The surface of light chip 101 is the second upper surface G3, and the second upper surface G3 can be the arbitrary shapes such as rectangle, circle, this hair It is bright that this is not limited.
It should also be noted that, in other embodiments, when the light that the LED luminescent wafers 101 are sent is ultraviolet light, The fluorescent material conversion ultraviolet light is that the light conversion ratio quantum dot 201 of white light converts the light conversion ratio that ultraviolet light is white light It is equally higher, therefore compared with prior art is only with the light-emitting device of quantum point mode, what light-emitting device of the invention was sent White brightness is higher.
With reference to figure 4, the schematic diagram of light-emitting device second embodiment of the present invention is shown.The present embodiment and first embodiment Technical scheme is roughly the same, and the present embodiment repeats no more in place of being basically the same as those in the first embodiment.It is different from first embodiment it It is in 90 degree of angle between the exiting surface G1 of first blooming piece 200 and the LED luminescent wafers 101. Light-guide device 011 is provided between the blooming piece 200 of light-emitting component 100 and first, the light-guide device 011 can make to pass through Optical path-deflecting occurs for the light of light-guide device 011.
After the blue light 010 and white light 030 that the light-emitting component 100 is sent are by the light-guide device 011, can be vertically Into first blooming piece 200, therefore the present embodiment light-emitting device can be applied to side entrance back module.
With reference to figure 5, the schematic diagram of light-emitting component in light-emitting device 3rd embodiment of the present invention is shown.The present embodiment and The technical scheme of one embodiment is roughly the same, and the present embodiment repeats no more in place of being basically the same as those in the first embodiment, and implements with first The difference of example is that in the present embodiment, in light-emitting component, the protective clear layer 102 includes central area 1021 With around the neighboring area 1022 of the central area, the fluorescent material is distributed in the central area 1021.The fluorescence Powder, which is distributed in the central area 1021, to be advantageous in that, the fluorescent material is excited the white light 030 sent by some blue light 010 It is output to from the protective clear layer 102 including central area 1021 on first blooming piece, is more beneficial for raising first The brightness of the white light of blooming piece output.
With reference to figure 6, the schematic diagram of light-emitting component in light-emitting device fourth embodiment of the present invention is shown.The present embodiment and The technical scheme of one embodiment is roughly the same, and the present embodiment repeats no more in place of being basically the same as those in the first embodiment, and implements with first The difference of example is that in the present embodiment, in light-emitting component, the fluorescent material is uniformly distributed in the protective clear layer In 102, the fluorescence powder content in the protective clear layer 102 is below first threshold.
Specifically, when the content when the fluorescent material in the protective clear layer 102 is less, some blue light 010 excites Fluorescent material and send white light 030, another part blue light 010 will not excitated fluorescent powder, but still with blue light through transparency protected Layer 102 exports, and another part blue light 010 is converted into white light by the first blooming piece.
When content of the fluorescent material in the protective clear layer 102 is more than first threshold, LED luminescent wafers 101 are sent Whole blue lights (accounting for LED luminescent wafers 101 send blue light total light flux more than 99%, remaining can ignore) excitated fluorescent powder Send white light so that whole blue lights that LED luminescent wafers 101 are sent are converted into white light.Therefore, it is described transparent in the present embodiment Fluorescence powder content in protective layer 102 is below first threshold so that the excitated fluorescent powder of some blue light 010 and send white light 030, Another part blue light 010 will not excitated fluorescent powder, but still exported with blue light 010 through protective clear layer 102.
It should be noted that the first threshold and shape of the protective clear layer 102, volume and LED luminescent wafers 101 light intensity for sending blue light have a relation, and the occurrence of the first threshold can be obtained by experiment, and the present invention is herein no longer Any restriction.
In the present embodiment, the fluorescence can also be adjusted by changing the fluorescence powder content in the protective clear layer 102 The luminous flux of the luminous flux of powder conversion blue light and the conversion blue light of quantum dot 201 accounts for the LED luminescent wafers 101 and sends blue light respectively Total light flux ratio, and then adjust the white brightness that is sent of the present embodiment light-emitting device.
With reference to figure 7, the schematic diagram of light-emitting component in the embodiment of light-emitting device the 5th of the present invention is shown.The present embodiment and The technical scheme of one embodiment is roughly the same, and the present embodiment repeats no more in place of being basically the same as those in the first embodiment, and implements with first The difference of example is that in the present embodiment, in light-emitting component, the protective clear layer 102 is away from the luminous crystalline substances of the LED The surface of piece 101 is the second upper surface G3, and the second upper surface G3 is provided with the second fluoresent coating 105, the fluorescent material point It is distributed in second fluoresent coating 105, fluorescent material is not provided with the protective clear layer 102.
Second fluoresent coating 105 is white for some blue light 010 that the LED luminescent wafers 101 are sent to be converted into Light 030, another part blue light 010 pass through second fluoresent coating 105, still enter the first blooming piece with blue light 010.
Specifically, the excitated fluorescent powder of some blue light 010 and send white light 030, another part blue light 010 will not excite fluorescence Powder, but still exported with blue light 010 through the second fluoresent coating 105, another part blue light 010 is by the first blooming piece It is converted into white light.Change into the ratio between the blue light 010 of white light 030 and the luminous flux of unconverted blue light 010 and the second fluoresent coating Fluorescence powder content is relevant in 105.
In the present embodiment, second fluoresent coating 105 can use the modes such as coating to be formed in the protective clear layer 102 the second upper surface G3.Such as fluorescent material is distributed in organic material, the organic material is coated on organic material simultaneously Solidification, form the second fluoresent coating 105.Therefore, the manufacture craft of the present embodiment light-emitting device is simpler, and cost is lower.
With reference to figure 8, the schematic diagram of light-emitting device sixth embodiment of the present invention is shown.The present embodiment and first embodiment Technical scheme is roughly the same, the present embodiment be basically the same as those in the first embodiment part repeat no more, it is different from first embodiment it It is in in the present embodiment, in light-emitting component, the surface that the housing 104 exposes the protective clear layer 102 is first Upper surface G2, the first upper table G2 faces are provided with the first fluoresent coating 106, and the fluorescent material is distributed in first fluorescence and applied In layer 106.
In the present embodiment, fluorescent material is not provided with the protective clear layer 102, the blue light being emitted from protective clear layer 102 010 is converted into white light by the first blooming piece.
In the present embodiment, the light-emitting device is used in optical transport environment, for example, when the light-emitting device is located at backlight When in module, the light-emitting component is the light-emitting component in backlight module, and first blooming piece is the in backlight module One blooming piece, the backlight module includes backboard, optical module, the combining structure of a variety of blooming pieces composition, from transparent guarantor Projection or reflection occur in each position of combining structure for the blue light 010 that sheath 102 is emitted, and the combining structure is optical transport ring Border.
The some blue light 010 that the light-emitting component is sent can be reflexed to the protection structure by the optical transport environment On.Because the fluorescent material is distributed in the first fluoresent coating 106 on the first upper surface G2, first fluoresent coating 106 can receive some blue light 020 returned through the optical transport Ambient, and make 020 turn of some blue light being reflected back Turn to white light 030.
Therefore in the present embodiment, some blue light 020 that first fluoresent coating 106 returns the optical transport Ambient Recycling, it is set to be converted into white light 030 and be exported through the first blooming piece, the light for increasing the light-emitting device utilizes Rate, effectively increase the brightness of light-emitting device.
The present invention also provides a kind of backlight module.In backlight module provided by the invention, divide in first blooming piece Dissipating has quantum dot, and the non-white light for the light-emitting component to be sent is converted into white light, in the light-emitting component or in institute State light-emitting component and fluorescent material is additionally provided with to the light path between first blooming piece, the fluorescent material is used for by non-white light Excite and send white light, the white light that the fluorescent material is sent exports through the first blooming piece.With by being dispersed with quantum dot First blooming piece, part is converted into white light into the non-white light of the first blooming piece and compared, the fluorescent material light excites So as to which the relative non-white light into fluorescent material of white light sent has higher light conversion ratio, that is to say, that equally light intensity is non- White light distinguishes incident fluorescence powder and the first blooming piece, and the white light of fluorescent material output has than the white light that the first blooming piece exports Higher brightness, therefore, backlight module of the present invention excite luminous and quantum dot light emitting two ways to send using fluorescent material simultaneously White light, compared with prior art is only with the backlight module of quantum dot light emitting mode, the white brightness sent is higher, while can be with Make display device that also there is higher color saturation.
Fig. 9 shows the schematic cross-sectional view of backlight module first embodiment of the present invention, and Figure 10 is the office of backlight module in Fig. 9 Portion's top view (visual angle along Fig. 9 arrow A1 directions from up to down).Backlight module of the present invention first is implemented with reference to figure 9, Figure 10 Example illustrates.
The present embodiment backlight module includes：
Light-emitting component, for lighting.Specifically, in the present embodiment, the light-emitting component includes the He of blue light emitting element 901 White light emitting element 902.The blue light emitting element 901 and white light emitting element 902 (do not show including LED luminescent wafers Go out), the LED luminescent wafers send blue light.Fluorescent material, the fluorescent material energy are provided with the white light emitting element 902 The blue light that LED luminescent wafers are sent in the white light emitting element is enough set to be converted into white light.In the blue light emitting element 901 not Fluorescent material is set, therefore the blue light emitting element 901 sends blue light.
It should be noted that in the present embodiment, the fluorescent material can be excited by blue light and send white light, the fluorescent material Including yellow fluorescent powder, yellow red mixed fluorescent powder or red green mixed fluorescent powder.But the present invention is without limitation, in other realities Apply in example, the LED luminescent wafers can be sent out ultraviolet light, the fluorescent material can also choose can by ultraviolet excitation and Send other species fluorescent material of white light.
It should also be noted that, in the present embodiment, LED luminescent wafers are sent all blue in the white light emitting element Light is converted into white light.
With continued reference to Fig. 9, the present embodiment backlight module also includes the first blooming piece 600, first blooming piece 600 In be dispersed with quantum dot, the non-white light for the light-emitting component to be sent is converted into white light.In the present embodiment, first light Learn diaphragm 600 and the blue light that blue light emitting element 901 is sent is converted into white light.Specifically, the principle of quantum dot light emitting mode is： The some blue light that blue light emitting element 901 is sent can be converted into feux rouges and green glow by the quantum dot, the feux rouges and green glow, And blue light of the part to convert exports into white light from first blooming piece 600.
In the present embodiment, the white light that the white light emitting element 902 is sent is the white light that the fluorescent material is sent, described white The white light that light light-emitting component 902 is sent exports through the first blooming piece 600.Therefore, the present embodiment backlight module can be simultaneously Luminous and quantum dot light emitting two ways is excited to send white light by fluorescent material.
Fluorescent material excites to light has higher light conversion ratio than quantum dot light emitting, that is to say, that the blue light of same light intensity Incident fluorescence powder and the first blooming piece 600 respectively, the white light of fluorescent material output have than the white light that the first blooming piece 600 exports There is higher brightness, therefore, the present embodiment backlight module excites luminous and quantum dot light emitting two ways using fluorescent material simultaneously White light is sent, compared with prior art is only with the backlight module of quantum dot light emitting mode, the white brightness sent is higher, simultaneously Higher color saturation can also be provided for display device.The present embodiment backlight module is applied in liquid crystal display device, can Brightness and the color saturation of liquid crystal display device are effectively improved, so as to improve display effect.
With continued reference to Fig. 9, the present embodiment backlight module also includes：
Optical module, it is arranged between the light-emitting component 901 (902) and first blooming piece 600, for by institute The light for stating light-emitting component is conducted to first blooming piece 600.
Backboard framework, the backboard framework include backboard 300 and frame glue 301, first blooming piece 600 and optics group Part is embedded in the opening of the backboard framework, and first blooming piece 600 is located on the optical module.
Specifically, in the present embodiment, the backlight module is side entrance back module, the blue light emitting element 901 It is located at white light emitting element 902 in the side wall of the opening, the optical module includes the light guide plate for being covered in open bottom 500, the light that the light guide plate 500 is used to send the blue light emitting element 901 and white light emitting element 902 changes direction, To enter from the open bottom upwardly direction in the first blooming piece 600.
With reference to figure 10, Figure 10 is the partial top view of backlight module in Fig. 9.Blue light emitting element 901 and the white light hair Optical element 902 is arranged alternately in the opening sidewalls.It is such to be advantageous in that, the blue light emitting element 901 and white-light emitting Element 902 is uniform in opening sidewalls arrangement so that is transmitted to the blue light in the first blooming piece 600 by light guide plate 500 It is evenly distributed with white light.When white light emitting element 902 sends the brightness of white light and quantum dot sends the brightness difference of white light, from The white light of first blooming piece 600 outgoing also more uniformly, that is, improves the uniformity that backlight module sends white light, and then favorably In the display effect for improving liquid crystal display device.
It should be noted that in the present embodiment, the blue light emitting element 901 and white light emitting element 902 are described Opening sidewalls are arranged alternately, therefore the quantity ratio of the blue light emitting element 901 and white light emitting element 902 is 1:1.But this Invention is not limited to the blue light emitting element 901 and white light emitting element 902 in the arrangement mode of the opening sidewalls, In other embodiment, one or more blue light emitting elements 901 can form blue light emitting element group, one or more institutes White light emitting element group can be formed by stating white light emitting element 902, and the blue light emitting element group and white light emitting element group exist The opening sidewalls are arranged alternately.Can be by adjusting each self-contained institute in blue light emitting element group and white light emitting element group State blue light emitting element 901 and the quantity of white light emitting element 902, adjust blue light emitting element 901 described in backlight module and white The quantity ratio of light light-emitting component 902.
It should be noted that the quantity ratio that the white light emitting element 902 accounts for light-emitting component is bigger, backlight module sends white The brightness of light is higher.As table 1 below is shown in backlight module, blue light emitting element is from white light emitting element quantity than different When, backlight module sends the brightness value (candela value) of white light.In the prior art in backlight module, in blue light emitting element 901 and white light emitting element 902 quantity ratio be 1:When 0, that is, only set blue light emitting element 901 when, backlight module hair The white brightness gone out be 6017.9 candelas/square metre, in the present embodiment, when the blue light emitting element 901 and white light are sent out The quantity ratio of optical element 902 is 1:1, the white brightness that the backlight module is sent be 9124 candelas/square metre.In other realities Apply in example, can be by adjusting in backlight module, the quantity ratio of blue light emitting element 901 and white light emitting element 902, to adjust The white brightness that backlight module is sent.It should be noted that when the color saturation that backlight module can provide fills for liquid crystal display When putting even more important parameter, in order that backlight module can provide higher color saturation, the blue light emitting element 901 It can be selected 1 with the quantity ratio of white light emitting element 902:More than 1.
Table 1
It is it should be noted that clear for the arrangement situation of the blue light emitting element 901 and white light emitting element 902 is illustrated Chu, it have ignored frame glue 301 in Figure 10 (with reference to figure 9).
It should also be noted that, with continued reference to Fig. 9, in the present embodiment, the backboard framework and the optical module it Between be additionally provided with reflector plate 400, the reflector plate 400 is used to the light that the light-emitting component is output in backboard framework reflexing to institute State in light guide plate 500.Specifically, in the present embodiment, the reflector plate 400 be located at the backboard 300 and light guide plate 500 it Between.
The second optical diaphragm structure 800, second optical diaphragm structure are additionally provided with first blooming piece 600 800 can include the multi-layer optical membrane such as UV resistance film, anti-dazzling film, the invention is not limited in this regard.
With reference to figure 11,12, the schematic diagram of backlight module second embodiment of the present invention is shown.The present embodiment and first is implemented The technical scheme of example is roughly the same, and the present embodiment repeats no more in place of being basically the same as those in the first embodiment, with first embodiment not It is with part：
With reference to figure 11, the sectional view of backlight module second embodiment of the present invention, in the present embodiment, the backlight are shown Module is down straight aphototropism mode set, and the blue light emitting element 901 and white light emitting element 902 are located at the back of the body of the open bottom On plate frame body.The optical module includes the diffuser plate 501 being covered on the light-emitting component, and the diffuser plate 501 makes described The light that light-emitting component is sent is evenly into the first blooming piece.
With reference to figure 12, show blue light emitting element 901 described in the present embodiment and white light emitting element 902 in the backboard The distribution schematic diagram of framework open bottom, as shown in figure 12, the blue light emitting element 901 and white light emitting element 902 are in institute Backboard framework open bottom is stated alternately to be uniformly distributed in array-like.It is such to be advantageous in that, the blue light emitting element 901 and white Light light-emitting component 902 is uniform in opening sidewalls arrangement so that is transmitted to by diffuser plate 501 in the first blooming piece 600 Blue light and white light be evenly distributed.When white light emitting element 902 sends the brightness of white light and quantum dot sends the brightness of white light not Meanwhile it is also more uniform from the white light of the first blooming piece 600 outgoing, that is, the uniformity that backlight module sends white light is improved, Be advantageous to improve the display effect of liquid crystal display device.
It should be noted that in the present embodiment, the back of the body described in the blue light emitting element 901 and white light emitting element 902 Plate frame body open bottom is alternately uniformly distributed in array-like, therefore the blue light emitting element 901 and white light emitting element 902 Quantity ratio is 1:1.But the present invention to the blue light emitting element 901 and white light emitting element 902 in the open bottom Arrangement mode is not limited, and in other embodiments, multiple blue light emitting elements 901 can line up blue light emitting element OK, multiple white light emitting elements 902 can line up white light emitting element row, the blue light emitting element row and white-light emitting Element row is arranged alternately in the open bottom.Or multiple white light emitting elements 902 can be distributed evenly in it is multiple , can be by adjusting in blue light emitting element group and white light emitting element group each in the array that blue light emitting element 901 forms Comprising blue light emitting element 901 and white light emitting element 902 quantity, adjust backlight module described in blue light emitting element 901 and the quantity ratio of white light emitting element 902.
Down straight aphototropism mode set is commonly used to and large scale liquid crystal display device, therefore the present embodiment backlight module application When with large scale liquid crystal display device, brightness and the color saturation of large scale liquid crystal panel can be effectively improved, so as to carry The display effect of high large scale liquid crystal display device.
It should be noted that in down straight aphototropism mode set, there is cavity, institute between the diffuser plate 501 and backboard 300 Diffuser plate 501 is stated to be supported on backboard 300 by diffuser plate support column 302.
In addition, in the present embodiment, in the backboard framework, the combination of backboard 300 and frame glue 301 is also implemented with first Example is different, but this backboard 300 and the arrangement of frame glue 301 are technology customary in the art, and the present invention will not be repeated here.
With reference to figure 13, the schematic diagram of backlight module 3rd embodiment of the present invention is shown.The present embodiment and first embodiment Something in common repeat no more, be with the difference of first embodiment：
The light-emitting component only includes blue light emitting element 901, and the blue light emitting element 901 sends blue light.
The first surface of the optical module towards the light-emitting component is optical module incidence surface, and the fluorescent material is set In on the optical module incidence surface.
Specifically, in the present embodiment, the backlight module is side entrance back module, and the optical module is light guide plate 500, the light guide plate 500 towards the first surface G4 of the blue light emitting element 901 be optical module incidence surface, in the light Learn on component incidence surface formed with the 3rd fluoresent coating 702, fluorescent material is provided with the 3rd fluoresent coating 702, for by institute State some blue light that blue light emitting element 901 is sent and be converted into white light.
Specifically, the blue light emitting element 901 is sent some blue light excitated fluorescent powder and send white light, another part Blue light will not excitated fluorescent powder, but still exported with blue light through the 3rd fluoresent coating 702, another part blue light is by One blooming piece 600 is converted into white light.Change into the ratio between the blue light 010 of white light and the luminous flux of unconverted blue light and the 3rd glimmering Fluorescence powder content is relevant in light coating 702.
The fluorescent material, which is arranged on the optical module incidence surface, to be advantageous in that, the fluorescent material is apart from the blue light Light-emitting component 901 is relatively near, is directly entered the 3rd fluoresent coating 702 after the blue light outgoing that the blue light emitting element 901 is sent, makes The blue light that receives of fluorescent material is more, the fluorescent material exposure brightness sent that is stimulated is bigger.
With reference to figure 14, the schematic diagram of backlight module fourth embodiment of the present invention is shown.The present embodiment and 3rd embodiment Something in common repeat no more, be with the difference of 3rd embodiment：
The second surface of the optical module towards first blooming piece 600 is optical module exiting surface, described glimmering Light powder is arranged on the optical module exiting surface.
Specifically, in the present embodiment, the backlight module is side entrance back module, and the optical module is light guide plate 500, the light guide plate 500 towards the second surface G5 of first blooming piece 600 be optical module exiting surface, in the light Learn on component exiting surface formed with the 4th fluoresent coating 703, fluorescent material is provided with the 4th fluoresent coating 703, for by institute State some blue light that blue light emitting element 901 is sent and be converted into white light.
With reference to figure 15, the schematic diagram of the embodiment of backlight module the 5th of the present invention is shown.The present embodiment and 3rd embodiment Something in common repeat no more, be with the difference of 3rd embodiment：
In the present embodiment, the fluorescent material is arranged at the reflector plate 400 towards on the side of the optical module.
Specifically, in the present embodiment, the backlight module is side entrance back module, and the optical module is light guide plate 500, formed with the 5th fluoresent coating on threeth surface G6 of the reflector plate 400 towards the side of the light guide plate 500 704, fluorescent material is provided with the 5th fluoresent coating 704, and some blue light for the blue light emitting element 901 to be sent turns Turn to white light.
With reference to figure 16, the schematic diagram of backlight module sixth embodiment of the present invention is shown.The present embodiment and 3rd embodiment Something in common repeat no more, be with the difference of 3rd embodiment：
First blooming piece 600 towards the surface of the optical module be the incidence surface of the first blooming piece 600, it is described Fluorescent material is arranged on the incidence surface of the first blooming piece 600.
Specifically, in the present embodiment, the backlight module is side entrance back module, and the optical module is light guide plate 500, first blooming piece 600 towards on the 4th surface G7 of the light guide plate 500 formed with the 6th fluoresent coating 705, Fluorescent material is provided with the 6th fluoresent coating 705, for some blue light conversion for sending the blue light emitting element 901 For white light.
The fluorescent material, which is arranged on the incidence surface of the first blooming piece 600, to be advantageous in that, the blue light emitting member The some blue light that part 901 is sent after multiple reflections, finally passes through the 6th fluoresent coating 705 inside backboard framework Into the first blooming piece 600, therefore the fluorescent material in this implementation can be swashed by each road reflection blue light inside backboard framework Hair, improves utilization rate of the fluorescent material to blue light in backlight module.
It should be noted that the above-mentioned the 4th into sixth embodiment, the backlight module is side entrance back module Can also be down straight aphototropism mode set, the optical module can also be diffuser plate.
With reference to figure 17, the schematic diagram of the embodiment of backlight module the 7th of the present invention is shown.The present embodiment and first embodiment Technical scheme it is roughly the same, the backlight module is side entrance back module, and the light-emitting component 100 is located at backboard framework and opened In the side wall of mouth, the part that is basically the same as those in the first embodiment repeats no more, and is with the difference of first embodiment：
In the present embodiment, the light-emitting component 100 is the light-emitting component 100 in light-emitting device provided by the invention, therefore, It can combine with reference to figure 3, in the present embodiment, the light-emitting component 100 includes：
LED luminescent wafers 101, for lighting.
The protection structure of the LED luminescent wafers 101 is coated, fluorescent material is provided with the protection structure.It is described luminous Element 100 includes the LED luminescent wafers 101 and protection structure.
In the present embodiment, the LED luminescent wafers 101 have exiting surface, and first blooming piece 200 is arranged on described The side of the exiting surface of LED luminescent wafers 101, and in the light path of the light sent in the LED luminescent wafers 101.
In the present embodiment, the LED luminescent wafers 101 send blue light, and the fluorescent material includes yellow fluorescent powder, Huang Hong One kind in mixed fluorescent powder or red green mixed fluorescent powder.But the invention is not limited in this regard, optionally, in other embodiment In, the LED luminescent wafers 101 can be sent out ultraviolet light.
With continued reference to Fig. 3, in the present embodiment, the protection structure includes：
Coat the protective clear layer 102 of the exiting surface of LED luminescent wafers 101；
Housing 104, the protective clear layer 102 and LED luminescent wafers 101 are embedded in the housing 104, the housing 104 expose the protective clear layer 102.
In the present embodiment, the protective clear layer 102 includes central area 1021 and the week around the central area Border area domain 1022, the fluorescent material are distributed in the neighboring area 1022.
With continued reference to Fig. 3, the fluorescent material can be excited by some blue light that the LED luminescent wafers 101 are sent, from And ejecting white light, that is to say, that some blue light 010 is converted into white light by the fluorescent material.Sent out from the LED luminescent wafers 101 After another part blue light 010 gone out is by protective clear layer 102, still it is emitted with blue light, is converted after the first blooming piece 600 For white light.
With by the first blooming piece 600, the blue light that part is entered to the first blooming piece 600 is converted into white light and compared, The fluorescent material light excites has higher light conversion ratio so as to the relative blue light into fluorescent material of white light of outgoing, that is, Say, the blue light difference incident fluorescence powder of same light intensity and the first blooming piece 600, the white light of fluorescent material output is than the first optical film The white light of piece output has higher brightness, and therefore, the present embodiment backlight module excites luminous and quantum using fluorescent material simultaneously The luminous two ways of point sends white light, and compared with the backlight module that prior art is entered using quantum dot light emitting mode, what is sent is white Brightness is higher, while higher color saturation can also be provided for display device.
It should be noted that in other embodiments, can when the fluorescent material is similarly provided in the protection structure Choosing, the light-emitting component in backlight module of the present invention can also be for light-emitting device 3rd embodiment provided by the invention to the 6th in fact The light-emitting component in any embodiment in example is applied, for example, the protective clear layer 102 includes central area and around the center The neighboring area in region, the fluorescent material are distributed in the central area.
Or it is the first upper surface that the housing 104, which exposes the surface of the protective clear layer 102, first upper table Face is provided with the first fluoresent coating, and the fluorescent material is distributed in first fluoresent coating.It is such to be advantageous in that, by institute State fluorescent material to be distributed in first fluoresent coating, first fluoresent coating can receive to be reflected back through backlight unit Some blue light, and some blue light being reflected back is converted into white light.First fluoresent coating is by the optical transport ring The some blue light recycling that border is reflected back, it is converted into white light and is exported through the first blooming piece 600, increase described The light utilization efficiency of backlight module, effectively increase the luminosity of backlight module.
The present invention is not limited to set-up mode of the fluorescent material in the protection structure.State fluorescent material and be arranged at institute The effect stated in protection structure is, the light-emitting component is excited luminous and quantum dot light emitting two using fluorescent material simultaneously Kind mode sends white light, and then enables the backlight module of the present invention to excite luminous and quantum dot light emitting using fluorescent material simultaneously Two ways sends white light.
It should be noted that Fig. 3 is the sectional view of light-emitting component 100, the shape of the upper surface of light-emitting component 100 is not shown, In the light-emitting component of the present invention, the first upper surface of the housing 104 can be the arbitrary shapes such as rectangle, circle, described transparent Protective layer 102 is the second upper surface away from the surface of the LED luminescent wafers 101, and second upper surface can be rectangle, circle The arbitrary shapes such as shape, the present invention are not limited to this.
These specific set-up modes may be referred in each embodiment of device provided by the invention of giving out light, light-emitting component Concrete structure, the present invention repeat no more to this.
With reference to figure 18, the schematic diagram of the embodiment of backlight module the 8th of the present invention is shown.The present embodiment and the 7th embodiment Technical scheme it is roughly the same, repeat no more with the something in common of the 7th embodiment, be with the difference of the 7th embodiment：
In the present embodiment, the backlight module is down straight aphototropism mode set, and the light-emitting component 100 is located at the opening In the backboard framework of bottom.The optical module includes the diffuser plate 501 being covered on the light-emitting component, the diffuser plate 501 make the light that the light-emitting component is sent evenly into the first blooming piece.
Down straight aphototropism mode set is commonly used to and large scale liquid crystal display device, therefore the present embodiment backlight module application When with large scale liquid crystal display device, brightness and the color saturation of large scale liquid crystal panel can be effectively improved, so as to carry The display effect of high large scale liquid crystal display device.
It should be noted that in down straight aphototropism mode set, there is cavity, institute between the diffuser plate 501 and backboard 300 Diffuser plate 501 is stated to be supported on backboard 300 by diffuser plate support column 302.
In addition, in the present embodiment, in the backboard framework, the arrangement of backboard 300 and frame glue 301 is also implemented with first Example is different, but this backboard 300 and the arrangement of frame glue 301 are technology customary in the art, and the present invention will not be repeated here.
The present invention also provides a kind of liquid crystal display device, including：Backlight module provided by the invention；Positioned at the backlight mould Liquid crystal display panel in group.
It is white that backlight module provided by the invention excites luminous and quantum dot light emitting two ways to send using fluorescent material simultaneously Light, compared with prior art is only with the backlight module of quantum dot light emitting mode, the white brightness sent is higher, while can also be Display device provides higher color saturation.Therefore the brightness of liquid crystal display device of the present invention and color saturation are higher, show Show that effect is preferable.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair Bright technical scheme makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, according to the present invention Any simple modifications, equivalents, and modifications made to above example of technical spirit, belong to technical solution of the present invention Protection domain.

Claims (24)

  1. A kind of 1. light-emitting device, it is characterised in that including：
    LED luminescent wafers；
    The protection structure of the LED luminescent wafers is coated, fluorescent material is provided with the protection structure；
    The first blooming piece being arranged on outside the protection structure, quantum dot is dispersed with first blooming piece；
    The fluorescent material can be excited by the part light that the LED luminescent wafers are sent, so as to ejecting white light；From the LED Another part light that luminescent wafer is sent is converted into white light after first blooming piece is reached.
  2. 2. light-emitting device as claimed in claim 1, it is characterised in that the LED luminescent wafers have an exiting surface, and described first Blooming piece is arranged on the side of the LED luminescent wafers exiting surface, and the light path of the light sent in the LED luminescent wafers On.
  3. 3. light-emitting device as claimed in claim 2, it is characterised in that the LED luminescent wafers send blue light or ultraviolet light.
  4. 4. light-emitting device as claimed in claim 3, it is characterised in that the LED luminescent wafers send blue light, the fluorescent material Including yellow fluorescent powder, yellow red mixed fluorescent powder or red green mixed fluorescent powder.
  5. 5. light-emitting device as claimed in claim 2, it is characterised in that the protection structure includes：
    Coat the protective clear layer of the LED luminescent wafers exiting surface；
    Housing, protective clear layer and the LED luminescent wafer are embedded in the housing, and the housing exposes described transparency protected Layer.
  6. 6. light-emitting device as claimed in claim 5, it is characterised in that the protective clear layer includes central area and around institute The neighboring area of central area is stated, the fluorescent material is distributed in the central area, or is distributed in the neighboring area.
  7. 7. light-emitting device as claimed in claim 5, it is characterised in that the fluorescent material is uniformly distributed in the protective clear layer In, the fluorescence powder content in the protective clear layer is below first threshold.
  8. 8. light-emitting device as claimed in claim 5, it is characterised in that the surface that the housing exposes the protective clear layer is First upper surface, first upper surface are provided with the first fluoresent coating, and the fluorescent material is distributed in first fluoresent coating.
  9. 9. light-emitting device as claimed in claim 5, it is characterised in that the protective clear layer deviates from the LED luminescent wafers Surface be the second upper surface, second upper surface is provided with the second fluoresent coating, and the fluorescent material is distributed in described second In fluoresent coating.
  10. A kind of 10. backlight module, it is characterised in that including：
    Light-emitting component, for lighting；Wherein, the light-emitting component includes：
    LED luminescent wafers, for lighting；
    Coat the protection structure of the LED luminescent wafers；
    First blooming piece, quantum dot is dispersed with first blooming piece, it is non-white for the light-emitting component to be sent Light is converted into white light；
    Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light of the light-emitting component Conduct to first blooming piece；
    The backlight module is provided with fluorescent material in the protection structure, and the fluorescent material is used to be excited and sent by non-white light White light, the white light that the fluorescent material is sent export through the first blooming piece.
  11. 11. backlight module as claimed in claim 10, it is characterised in that the fluorescent material is used to be excited and sent white by blue light Light, the fluorescent material include yellow fluorescent powder, yellow red mixed fluorescent powder or red green mixed fluorescent powder.
  12. 12. backlight module as claimed in claim 10, it is characterised in that the backlight module also includes backboard framework, described First blooming piece and optical module are embedded in the opening of the backboard framework, and first blooming piece is located at the optics On component；
    The light-emitting component is located in the side wall of the opening, or, the light-emitting component is located at the backboard of the open bottom In framework.
  13. 13. backlight module as claimed in claim 12, it is characterised in that the backlight module is down straight aphototropism mode set, institute Light-emitting component is stated to be located in the backboard framework of the open bottom；The optical module includes being covered on the light-emitting component Diffuser plate, the diffuser plate make the light that the light-emitting component is sent evenly into the first blooming piece.
  14. 14. backlight module as claimed in claim 12, it is characterised in that the backlight module is side entrance back module, institute Light-emitting component is stated to be located in the side wall of the opening；The optical module includes the light guide plate for being covered in open bottom, described to lead The light that tabula rasa is used to send the light-emitting component changes direction, to enter the first optics from the open bottom upwardly direction In diaphragm.
  15. 15. backlight module as claimed in claim 10, it is characterised in that the light-emitting component includes：
    LED luminescent wafers, for sending blue light；
    The protection structure of the LED luminescent wafers is coated, fluorescent material is provided with the protection structure；
    The fluorescent material can be excited by some blue light that the LED luminescent wafers are sent, so as to ejecting white light；From described Another part blue light that LED luminescent wafers are sent is converted into white light after first blooming piece is reached.
  16. 16. backlight module as claimed in claim 15, it is characterised in that the LED luminescent wafers have exiting surface, the guarantor Protection structure includes：
    Coat the protective clear layer of the LED luminescent wafers exiting surface；
    Housing, protective clear layer and the LED luminescent wafer are embedded in the housing, and the housing exposes described transparency protected Layer.
  17. 17. backlight module as claimed in claim 16, it is characterised in that the protective clear layer includes central area and surrounded The neighboring area of the central area, the fluorescent material are distributed in the central area, or are distributed in the neighboring area In.
  18. 18. backlight module as claimed in claim 17, it is characterised in that the housing exposes the surface of the protective clear layer For the first upper surface, first upper surface is provided with the first fluoresent coating, and the fluorescent material is distributed in first fluorescence and applied In layer.
  19. A kind of 19. backlight module, it is characterised in that including：
    Light-emitting component, for lighting；Wherein, the light-emitting component includes：
    LED luminescent wafers, for lighting；
    Coat the protection structure of the LED luminescent wafers；
    First blooming piece, quantum dot is dispersed with first blooming piece, it is non-white for the light-emitting component to be sent Light is converted into white light；
    Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light of the light-emitting component Conduct to first blooming piece；
    The backlight module is provided with fluorescent material in the light-emitting component of part, the fluorescent material be used to be excited by non-white light and White light is sent, the white light that the fluorescent material is sent exports through the first blooming piece；
    Backlight module also includes backboard framework, and first blooming piece and optical module are embedded in the opening of the backboard framework In, first blooming piece is located on the optical module；The backlight module is down straight aphototropism mode set, the luminous member Part is located in the backboard framework of the open bottom；The optical module includes the diffuser plate being covered on the light-emitting component, The diffuser plate makes the light that the light-emitting component is sent evenly into the first blooming piece；
    The light-emitting component includes blue light emitting element and white light emitting element, the blue light emitting element and white light emitting element Include LED luminescent wafers, the LED luminescent wafers send blue light；The fluorescent material is arranged on the white light emitting element, The blue light that LED luminescent wafers are sent in the white light emitting element is set to be converted into white light；Blue light emitting element and the white light hair Optical element is alternately uniformly distributed in the open bottom in array-like.
  20. A kind of 20. backlight module, it is characterised in that including：
    Light-emitting component, for lighting；Wherein, the light-emitting component includes：
    LED luminescent wafers, for lighting；
    Coat the protection structure of the LED luminescent wafers；
    First blooming piece, quantum dot is dispersed with first blooming piece, it is non-white for the light-emitting component to be sent Light is converted into white light；
    Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light of the light-emitting component Conduct to first blooming piece；
    The backlight module is provided with fluorescent material in the light-emitting component of part, the fluorescent material be used to be excited by non-white light and White light is sent, the white light that the fluorescent material is sent exports through the first blooming piece；
    The backlight module also includes backboard framework, and first blooming piece and optical module are embedded in the backboard framework In opening, first blooming piece is located on the optical module；The backlight module is side entrance back module, the hair Optical element is located in the side wall of the opening；The optical module includes the light guide plate for being covered in open bottom, the light guide plate Light for sending the light-emitting component changes direction, to enter the first blooming piece from the open bottom upwardly direction In；
    The light-emitting component includes blue light emitting element and white light emitting element, the blue light emitting element and white light emitting element Include LED luminescent wafers, the LED luminescent wafers are used to send blue light；The fluorescent material is arranged at the white-light emitting member On part, the blue light that LED luminescent wafers are sent in the white light emitting element is set to be converted into white light, the blue light emitting element and white Light light-emitting component is arranged alternately in the opening sidewalls.
  21. A kind of 21. backlight module, it is characterised in that including：
    Light-emitting component, for lighting；Wherein, the light-emitting component includes：
    LED luminescent wafers, for lighting；
    Coat the protection structure of the LED luminescent wafers；
    First blooming piece, quantum dot is dispersed with first blooming piece, it is non-white for the light-emitting component to be sent Light is converted into white light；
    Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light of the light-emitting component Conduct to first blooming piece；
    The backlight module is provided with fluorescent material on the light-emitting component to the light path between first blooming piece, described Fluorescent material is used to be excited by non-white light and send white light, and the white light that the fluorescent material is sent exports through the first blooming piece；
    Backboard framework, first blooming piece and optical module are embedded in the opening of the backboard framework, first light Diaphragm is learned to be located on the optical module；
    The light-emitting component is located in the side wall of the opening, or, the light-emitting component is located at the backboard of the open bottom In framework；
    Reflector plate is provided between the backboard framework and the optical module, the reflector plate is used to export the light-emitting component Light on to backboard framework is reflexed in the optical module, and the fluorescent material is arranged at the reflector plate towards the optics group On the side of part.
  22. A kind of 22. backlight module, it is characterised in that including：
    Light-emitting component, for lighting；Wherein, the light-emitting component includes：
    LED luminescent wafers, for lighting；
    Coat the protection structure of the LED luminescent wafers；
    First blooming piece, quantum dot is dispersed with first blooming piece, it is non-white for the light-emitting component to be sent Light is converted into white light；
    Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light of the light-emitting component Conduct to first blooming piece；
    The backlight module is provided with fluorescent material on the light-emitting component to the light path between first blooming piece, described Fluorescent material is used to be excited by non-white light and send white light, and the white light that the fluorescent material is sent exports through the first blooming piece；
    Backboard framework, first blooming piece and optical module are embedded in the opening of the backboard framework, first light Diaphragm is learned to be located on the optical module；
    The light-emitting component is located in the side wall of the opening, or, the light-emitting component is located at the backboard of the open bottom In framework；
    First blooming piece is the first blooming piece incidence surface towards the surface of the optical module, and the fluorescent material is set In on the first blooming piece incidence surface.
  23. A kind of 23. backlight module, it is characterised in that including：
    Light-emitting component, for lighting；Wherein, the light-emitting component includes：
    LED luminescent wafers, for lighting；
    Coat the protection structure of the LED luminescent wafers；
    First blooming piece, quantum dot is dispersed with first blooming piece, it is non-white for the light-emitting component to be sent Light is converted into white light；
    Optical module, it is arranged between the light-emitting component and first blooming piece, for by the light of the light-emitting component Conduct to first blooming piece；
    The backlight module is provided with fluorescent material on the light-emitting component to the light path between first blooming piece, described Fluorescent material is used to be excited by non-white light and send white light, and the white light that the fluorescent material is sent exports through the first blooming piece；
    Backboard framework, first blooming piece and optical module are embedded in the opening of the backboard framework, first light Diaphragm is learned to be located on the optical module；
    The light-emitting component is located in the side wall of the opening, or, the light-emitting component is located at the backboard of the open bottom In framework；
    The first surface of the optical module towards the light-emitting component is optical module incidence surface, and the optical module is towards institute The second surface for stating the first blooming piece is optical module exiting surface, the fluorescent material be arranged at the optical module incidence surface or On optical module exiting surface.
  24. A kind of 24. liquid crystal display device, it is characterised in that including：
    Backlight module as described in any one in claim 10 to 23；
    Liquid crystal display panel on the backlight module.
CN201410855442.4A 2014-12-31 2014-12-31 Light-emitting device, backlight module and liquid crystal display device Active CN104483778B (en)

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