CN107688255A - A kind of backlight module, quantum dot diaphragm and preparation method thereof - Google Patents
A kind of backlight module, quantum dot diaphragm and preparation method thereof Download PDFInfo
- Publication number
- CN107688255A CN107688255A CN201710812787.5A CN201710812787A CN107688255A CN 107688255 A CN107688255 A CN 107688255A CN 201710812787 A CN201710812787 A CN 201710812787A CN 107688255 A CN107688255 A CN 107688255A
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- China
- Prior art keywords
- quantum dot
- layer
- bubble
- protective layer
- dot diaphragm
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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 kind of quantum dot diaphragm, including quantum dot layer and the quantum dot layer is located in two layers of protective layer up and down therein, the protective layer on upper strata has alveolate microcellular structure to be internal.The invention also discloses a kind of preparation method and backlight module of quantum dot diaphragm.The present invention by quantum dot layer wherein in a face protective layer formed with bubble; light is after quantum dot layer enters the bubble in protective layer; it can occur to be totally reflected and reenter quantum dot layer; improve quantum dot layer luminescence generated by light utilization rate; backlight illumination is also improved, it is partially blue to avoid backlight color.
Description
Technical field
The present invention relates to quantum display technology field, more particularly to a kind of backlight module, quantum dot diaphragm and its making side
Method.
Background technology
As the increase of demand is presented to the image quality of the electronical display product such as TV, portable computer, display by consumer,
Colour gamut and brightness requirement more and more higher of the market for display.It is mainly to lift the monochrome of backlight display color to lift colour gamut
Property, monochromaticjty is better, then colour gamut is higher.
The method of lifting colour gamut mainly has at present：By green light LED light source combination RG (Red+Green, i.e., red green) fluorescent material
Or KSF (K2SiF6:The potassium fluosilicate of Mn4++ abbreviation, the i.e. manganese ion containing tetravalence) powder；By blooming piece using absorption veiling glare
Absorbing film, and be more to be fabricated to diaphragm or QD pipes using QD (quantum dots, quantum dot) powder of luminescence generated by light, utilize
Luminescence generated by light principle realizes high colour gamut.At present the implementation method of LCD highests colour gamut mostly be by blue-ray LED arrange in pairs or groups QD diaphragms, then
Coordinate improving to realize the high monochromaticity of three kinds of colors of red, green, blue, so as to lift the colour gamut of display, so for colored filter
And the launching efficiency of traditional QD diaphragms is relatively low, the feux rouges and green glow deficiency in light quantity excited is caused, backlight illumination is relatively low, and still
So it is likely to occur the partially blue phenomenon of backlight.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of backlight module, quantum dot diaphragm and its making side
Method, the display brightness of backlight can be effectively improved, lift the launching efficiency of quantum dot diaphragm, avoid the partially blue phenomenon of backlight.
In order to realize above-mentioned purpose, present invention employs following technical scheme：
A kind of quantum dot diaphragm, including quantum dot layer and by the quantum dot layer be located in it is therein up and down two layers protection
Layer, the protective layer on upper strata have alveolate microcellular structure to be internal.
As one of which embodiment, projection non-overlapping copies of all bubbles on the quantum dot layer.
As one of which embodiment, on the direction parallel to the quantum dot layer, adjacent two bubbles
Between spacing it is equal.
As one of which embodiment, the gas in the bubble is carbon dioxide.
Or the gas in the bubble is protective gas.
As one of which embodiment, the surface plating of the protective layer towards the quantum dot layer has Obstruct membrane.
Another object of the present invention is to provide a kind of preparation method of quantum dot diaphragm, including：
Make quantum dot layer；
Make two layers of protective layer so that wherein layer protective layer has alveolate microcellular structure to be internal；
Respectively in protective layer of the both sides up and down of the quantum dot layer attaching with the bubble and without the bubble
Protective layer.
As one of which embodiment, the process of the bubble is formed in the protective layer to be included：In the protection
Thermal decomposable foaming agent is passed through in the raw material of layer, it is produced bubble to raw material heat resolve.
Or the process of the bubble is formed in the protective layer include：Under protective gas, in the protection
Barium sulfate particles are added in the raw material of layer and then are stretched, form the bubble filled with protective gas in the feed.
A further object of the present invention is to provide a kind of backlight module, including light guide plate, located at the light guide plate incident side
Backlight and described quantum dot diaphragm, quantum dot diaphragm side where the light guide plate exiting surface.
The present invention passes through wherein being entered in a face protective layer formed with bubble, light from quantum dot layer in quantum dot layer
After bubble in protective layer, it may occur that it is totally reflected and reenters quantum dot layer, improves quantum dot layer luminescence generated by light utilization rate,
Backlight illumination is also improved, it is partially blue to avoid backlight color.
Brief description of the drawings
Fig. 1 is the section structure diagram of the quantum dot diaphragm of the embodiment of the present invention；
Fig. 2 is the light channel structure schematic diagram of the quantum dot diaphragm of the embodiment of the present invention；
Fig. 3 is the inside light path schematic diagram of the backlight module of the embodiment of the present invention；
Fig. 4 is the preparation method schematic diagram of the quantum dot diaphragm of the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Refering to Fig. 1, the quantum dot diaphragm 2 of the embodiment of the present invention includes quantum dot layer 10 and quantum dot layer 10 is located in into it
In two layers of protective layer 20 up and down, the protective layer 20 on upper strata is the internal microcellular structure with bubble 30.Quantum dot layer 10 can seal
Equipped with red green quantum dot, red green quantum dot can be excited by blue light and correspondingly produce red-green glow spectrum, in use, can be by quantum
The protective layer 20 for the microcellular structure that point diaphragm 2 has is used as light emission side, and the light projected from quantum dot layer 10 can be sent out through bubble 30
Raw be all-trans is emitted back towards in quantum dot layer 10 and projected again from light emission side after exciting, and improves quantum dot layer luminescence generated by light utilization rate.
Preferably, bubble 30 is evenly distributed in protective layer 20 in array fashion, and the size of all bubbles 30
It is identical, in addition, on the direction parallel to quantum dot layer 10 (in the horizontal direction i.e. in figure), between adjacent two bubbles 30
Spacing it is equal.So, the light sent through quantum dot diaphragm can be with highly uniform, and uniformity is preferable.
In order to avoid numerous bubbles 30 interfere the injection of influence light on the contrary, all bubbles 30 of the present embodiment exist
Projection non-overlapping copies on quantum dot layer 10, so, be not in lower floor the light that reflects of bubble it is anti-by the bubble on upper strata
The phenomenon being emitted back towards.Preferably each bubble 30 is equal with the distance of quantum dot layer 10, i.e., all bubbles 30 are located at quantum dot
Sustained height in layer 10.
Gas in bubble 30 can be carbon dioxide or protective gas, such as nitrogen or argon gas stable performance
Inert gas.So that quantum dot diaphragm 2 will not influence to use because of the interference of the factors such as heated, raying in use
Performance.
In addition, the sidewall surfaces in the surrounding of quantum dot layer 10 can be also encapsulated formed with reflecting layer, the reflecting layer will can measure
The light that the son point surrounding of layer 10 projects is reflected back, and is carried out secondary excitation, is improved light utilization.
Protective layer 20 also plates the purpose that water proof oxygen barrier can be played with Obstruct membrane 40 towards the surface of quantum dot layer 10,
Prevent that steam, air etc. enter in quantum dot diaphragm 2 and influence the photoluminescence performance of quantum dot layer 10 in use.Should
Obstruct membrane 40 can be that the composite construction that attached Multilayer Film is formed is plated on the surface of protective layer 20.
With reference to shown in Fig. 2, the blue incident ray of the injection of protective layer 20 from below passes through inlet after protective layer 20
Son point layer 10, a portion light are penetrated after feux rouges or green glow are correspondingly formed after quantum dot excites from the protective layer 20 of top
Go out, another part light is emitted directly toward to after the bubble 30 of the protective layer 20 of top, is reflected back by walls in quantum dot layer 10
Quantum dot on, so as to be projected again from the protective layer 20 of top after inspiring corresponding feux rouges or green glow, but some by
The light excited is returned in quantum dot layer 10 after the bubble 30 of top reflects and excited again.
As shown in figure 3, apply a kind of embodiment in backlight module, the back of the body of the present embodiment for the quantum dot diaphragm 2
Optical mode group is side entrance back, and backlight module also enters in addition to including quantum dot diaphragm 2 with light guide plate 1 and located at light guide plate 1
The backlight 3 of light side, quantum dot diaphragm 2 is located at side where the exiting surface of light guide plate 1, i.e., the top of light guide plate 1 shown in Fig. 3, quantum
The protective layer 20 with bubble 30 is located further away from the side of light guide plate 1 on point diaphragm 2, and the lower section of light guide plate 1 also has one layer
Reflector plate 4, the top of quantum dot diaphragm 2 are additionally provided with two layers of brightness enhancement film 5,6, and two layers of top of brightness enhancement film 5,6 is also settable one layer
Diffusion sheet.The blue light that backlight 3 is sent enters after light guide plate 1 to be projected from above light guide plate 1, meanwhile, the reflection of the lower section of light guide plate 1
The light projected towards the bottom of light guide plate 1 can be reflected back light guide plate 1 by piece 4；The light that the top of light guide plate 1 is projected enters quantum dot
Red-green glow can be inspired after diaphragm 2, the light part that quantum dot diaphragm 2 is sent projects supreme after brightness enhancement film 5,6 successively
The display panel 7 of side, another part light are emitted back towards quantum dot diaphragm 2, light guide plate 1 or anti-after brightness enhancement film 5, brightness enhancement film 6 reflect
Penetrate piece 4 and carry out after-treatment.The light for eventually entering into display panel 7 has higher colour gamut and brightness, is advantageous to display effect
Lifting.
As shown in figure 4, the preparation method of the quantum dot diaphragm of the present embodiment mainly includes：
S01, make quantum dot layer 10；
S02, make two layers of protective layer 20 so that wherein layer protective layer 20 is the internal microcellular structure with bubble 30；
S03, in the both sides up and down of quantum dot layer 10, attaching has the protective layer 20 of bubble 30 and without bubble 30 respectively
Protective layer 20.
Wherein, in step S02, the process of bubble 30 is formed in protective layer 20 to be included：In the raw material of protective layer 20
In be passed through thermal decomposable foaming agent, then raw material heat resolve is made its produce bubble.Or mixed in the raw material of protective layer 20
Enter sodium acid carbonate and weak acid, and control both dosages, you can produced in protective layer 20 carbon dioxide bubble or
Under protective gas environment, barium sulfate particles are added in the raw material of protective layer 20 and then are stretched, form filling in the feed
There is the bubble of protective gas, wherein, after increasing barium sulfate particles filler, appearance hardness and the stretching for being greatly improved plastics are strong
Degree, folding strength and heat conduction function and conducting function, improve the engineering application of plastics.After bubble formation, then with
The protective layer 20 of bubble plates attached multilayer film formation Obstruct membrane 40 towards the surface of quantum dot layer 10 can continue step S03.
The present invention passes through wherein being entered in a face protective layer formed with bubble, light from quantum dot layer in quantum dot layer
After bubble in protective layer, it may occur that it is totally reflected and reenters quantum dot layer, improves quantum dot layer luminescence generated by light utilization rate,
Backlight illumination is also improved, it is partially blue to avoid backlight color.
Described above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (10)
1. a kind of quantum dot diaphragm, it is characterised in that be located in it including quantum dot layer (10) and by the quantum dot layer (10)
In two layers of protective layer (20) up and down, the protective layer (20) on upper strata is the internal microcellular structure with bubble (30).
2. quantum dot diaphragm according to claim 1, it is characterised in that all bubbles (30) are in the quantum dot
Projection non-overlapping copies on layer (10).
3. quantum dot diaphragm according to claim 1, it is characterised in that in the direction parallel to the quantum dot layer (10)
On, the spacing between adjacent two bubbles (30) is equal.
4. quantum dot diaphragm according to claim 1, it is characterised in that the gas in the bubble (30) is titanium dioxide
Carbon.
5. quantum dot diaphragm according to claim 1, it is characterised in that the gas in the bubble (30) is protection gas
Body.
6. according to any described quantum dot diaphragms of claim 1-5, it is characterised in that the protective layer (20) is towards the amount
The surface plating of son point layer (10) has Obstruct membrane (40).
A kind of 7. preparation method of quantum dot diaphragm, it is characterised in that including：
Make quantum dot layer (10)；
Make two layers of protective layer (20) so that wherein layer protective layer (20) is the internal microcellular structure with bubble (30)；
The protective layer (20) with the bubble (30) is attached in the both sides up and down of the quantum dot layer (10) respectively and is not had
The protective layer (20) of the bubble (30).
8. the preparation method of quantum dot diaphragm according to claim 7, it is characterised in that in the protective layer (20) interior shape
Process into the bubble (30) includes：Thermal decomposable foaming agent is passed through in the raw material of the protective layer (20), then to original
Material heat resolve makes it produce bubble.
9. the preparation method of quantum dot diaphragm according to claim 7, it is characterised in that in the protective layer (20) interior shape
Process into the bubble (30) includes：Under protective gas, barium sulfate is added in the raw material of the protective layer (20)
Then particle is stretched, form the bubble filled with protective gas in the feed.
10. a kind of backlight module, it is characterised in that including light guide plate (1), the backlight located at the light guide plate (1) incident side
(3) and any described quantum dot diaphragms of claim 1-6, the quantum dot diaphragm are located at the light guide plate (1) exiting surface institute
In side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812787.5A CN107688255A (en) | 2017-09-11 | 2017-09-11 | A kind of backlight module, quantum dot diaphragm and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812787.5A CN107688255A (en) | 2017-09-11 | 2017-09-11 | A kind of backlight module, quantum dot diaphragm and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107688255A true CN107688255A (en) | 2018-02-13 |
Family
ID=61156211
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710812787.5A Pending CN107688255A (en) | 2017-09-11 | 2017-09-11 | A kind of backlight module, quantum dot diaphragm and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763346A (en) * | 2020-07-03 | 2020-10-13 | 武汉珈源同创科技有限公司 | Quantum dot optical function plate, preparation method thereof and backlight module |
| WO2021137830A1 (en) * | 2019-12-31 | 2021-07-08 | Bilkent Universitesi (Unam) Ulusal Nanoteknoloji Arastirma Merkezi | A method for enhancing color richness of displays |
| JP2021196606A (en) * | 2020-06-17 | 2021-12-27 | 南亞塑膠工業股▲分▼有限公司Nan Ya Plastics Corporation | Optical film, backlight module, and manufacturing method of optical film |
| CN113980400A (en) * | 2021-09-29 | 2022-01-28 | 纳晶科技股份有限公司 | Composite, method of preparing the same, light conversion device including the same, and display device including the same |
| CN114035251A (en) * | 2021-11-26 | 2022-02-11 | 常州智文光电科技有限公司 | Microbubble-containing quantum dot diffusion film and preparation method thereof |
| CN114488615A (en) * | 2022-02-11 | 2022-05-13 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and quantum dot film |
| WO2022222168A1 (en) * | 2021-04-22 | 2022-10-27 | 苏州三鑫时代新材料股份有限公司 | Diffusion plate for prolonging service life of quantum dot |
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| WO2021137830A1 (en) * | 2019-12-31 | 2021-07-08 | Bilkent Universitesi (Unam) Ulusal Nanoteknoloji Arastirma Merkezi | A method for enhancing color richness of displays |
| JP2021196606A (en) * | 2020-06-17 | 2021-12-27 | 南亞塑膠工業股▲分▼有限公司Nan Ya Plastics Corporation | Optical film, backlight module, and manufacturing method of optical film |
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| WO2022222168A1 (en) * | 2021-04-22 | 2022-10-27 | 苏州三鑫时代新材料股份有限公司 | Diffusion plate for prolonging service life of quantum dot |
| CN113980400A (en) * | 2021-09-29 | 2022-01-28 | 纳晶科技股份有限公司 | Composite, method of preparing the same, light conversion device including the same, and display device including the same |
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| CN114035251A (en) * | 2021-11-26 | 2022-02-11 | 常州智文光电科技有限公司 | Microbubble-containing quantum dot diffusion film and preparation method thereof |
| CN114035251B (en) * | 2021-11-26 | 2024-05-28 | 常州智文光电科技有限公司 | Diffusion film containing microbubble quantum dots and preparation method thereof |
| CN114488615A (en) * | 2022-02-11 | 2022-05-13 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and quantum dot film |
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