CN105116611B - A kind of anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot - Google Patents
A kind of anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot Download PDFInfo
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- CN105116611B CN105116611B CN201510606403.5A CN201510606403A CN105116611B CN 105116611 B CN105116611 B CN 105116611B CN 201510606403 A CN201510606403 A CN 201510606403A CN 105116611 B CN105116611 B CN 105116611B
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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
Abstract
The invention discloses a kind of anti-light leakage structures of the high colour gamut optical film application of cooperation quantum dot, including backlight, and color coating is arranged in the surface of at least one set of part of the backlight；The color coating is the coating containing light absorbent and/or fluorescent material, the excessive blue light of the light absorbent absorption blue-ray LED backlight edge surrounding, and excessive blue light is transformed into white light after the fluorescent material absorption blue light.The present invention effectively solves the leakage blue light defect of the liquid crystal display using the high colour gamut optical film of quantum dot and blue-ray LED backlight.
Description
Technical field
The present invention relates to field of display devices, more particularly to have used the liquid crystal display of the high colour gamut optics membrane technology of quantum dot
Apparatus field.
Background technique
Currently, technology of quantum dots is applied to field of liquid crystal display, the display colour gamut of equipment and bright in luster can be greatly improved
Degree, and energy consumption can be reduced.Colour gamut can be increased to 100% (NTSC mark from 70% (NTSC standard) of existing mainstream display device
It is quasi-).When technology of quantum dots is applied to the display equipment of liquid crystal display, especially small-medium size, usually using containing quantum dot
Fluorescent film (i.e. the high colour gamut optical film of quantum dot) matched blue-ray LED backlight used.
But some blue light can be leaked out from the gap between the frame and light guide plate of backlight.When liquid crystal display frame
Width it is smaller when, frame is difficult to block the blue light leaked out from backlight edge surrounding completely, causes to show that equipment is normally shown
When showing, there is apparent blue in screen edge surrounding, causes entire image sharpness color distortion, thus substantially reduces display and set
Standby display quality.The phenomenon that this leakage blue light, is especially prominent in the display equipment of small-medium size, this is because small-medium size
Display screen frame it is relatively narrow, it is more difficult to block from backlight edge surrounding leak out blue light.
Moreover, small-medium size shows that the development of equipment is just carried out towards the narrow frame even direction of Rimless in recent years, this makes
The problem of blue light must be leaked, is more prominent, and existing light leakage technology mainly uses baffle and photomask to block from backlight frame
Locate the light leaked out, the blue light total amount of light-guide edge does not decline at this time, only dispersed in light-guide edge region, this
When unit area blue light strength declined, but occur blue light region increase, backlight edge surrounding still can be observed bright
Aobvious blue, therefore the prior art can not solve the problems, such as this.
Summary of the invention
For this purpose, in view of the above technical problems, the present invention provides a kind of simply and effectively elimination blue-ray LED backlight edge four
The anti-light leakage structure of the high colour gamut optical film application of the cooperation quantum dot of week leakage blue light, solves to use the high colour gamut optical film of quantum dot
With the defect of the liquid crystal display leakage blue light of blue-ray LED backlight.
To achieve the above object, technical solution provided by the invention is as follows:
A kind of anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot, including backlight, in the backlight
Color coating is arranged in the surface of at least one set of part；The color coating is the coating containing light absorbent and/or fluorescent material, described
Light absorbent absorbs the excessive blue light of blue-ray LED backlight edge surrounding, and the fluorescent material absorbs excessive indigo plant after blue light
Light is transformed into white light.
Wherein, the color coating is the coating containing light absorbent and/or fluorescent material, it is intended that the color coating can be
Coating containing light absorbent, the color coating can be the coating containing fluorescent material, the color coating can also for containing
The coating of light absorbent and fluorescent material.
Wherein, the fluorescent material is the material that feux rouges or green light can be issued after absorbing blue light, the feux rouges and green light of sending
In conjunction with the blue light that the blue-ray LED backlight issues, it is combined into white light.
Wherein, the component of the backlight includes reflectance coating, light guide plate, quantum dot optical film, brightness enhancement film, diffusion barrier and side
Frame, on the surface at the edge on the surface of the reflectance coating of the backlight, the edge on the surface of light guide plate or side, quantum dot optical film
Edge, the edge on surface of brightness enhancement film, be equipped at least one in the edge on surface and the inner surface of frame of diffusion barrier
The color coating effectively eliminates the extra blue light leaked out from backlight edge surrounding.
As a further improvement of the present invention, the selection view leakage blue light of the processing position of the blue-ray LED backlight assembly
Degree depending on.The degree for leaking blue light is higher, and processing position is more.The regioselective criterion of processing is after processing, to carry on the back
The blue light strength of light source edge peripheral regions weakens to or backlight edge peripheral regions consistent with backlight body region
The ratios of three kinds of color of light of red, green, blue adjust to consistent with backlight body region.
Preferably, the color coating is equipped in four side border areas of the plate face towards light guide plate of reflective membrane.
Preferably, the four of three sides for not being fitted with blue LED lamp band of light guide plate and/or the plate face of the light guide plate
Side border area is equipped with the color coating.
Preferably, the color coating is equipped in four side border areas of quantum dot optical film.
Preferably, the color coating is equipped in four side border areas of brightness enhancement film.
Preferably, the color coating is equipped in four side border areas of diffusion barrier.
Preferably, in the inside of the frame of backlight in addition to close to being not coated on one side of blue LED lamp band, excess-three side is equal
Equipped with the color coating.
As a further improvement of the present invention, excessive blue light is transformed into the fluorescence of white light after the excessive blue light of the absorption
Material is the material that feux rouges or green light can be issued after absorbing blue light, is made using the material that can issue feux rouges or green light after absorption blue light
To solve to leak the material of Blue-light filtering, the material without can preferably issue other color of light, is due to the high colour gamut optics of quantum dot
Film issues feux rouges and green light, does not issue the light of other colors under the excitation of blue-ray LED.When addition can issue other color of light
Material when, the luminescent color that will lead to quantum dot optical film is not pure, thus reduce display equipment colour gamut.
As a further improvement of the present invention, the light absorbent is the color material that can absorb blue light, is specially
Colored dyes or colored pigment.
As a further improvement of the present invention, the colored dyes that can absorb blue light include: orchil, orange dye
Material, weld or black dyes.
As a further improvement of the present invention, the colored pigment that can absorb blue light includes: red pigment, orange face
Material, yellow uitramarine or black pigment.
As a further improvement of the present invention, the fluorescent material is the color that feux rouges, green light can be issued after absorbing blue light
Material is specially red fluorescence powder, green emitting phosphor, red fluorescence dyestuff or Green fluorescent dye.
As a further improvement of the present invention, the emission wavelength of the red fluorescence material is 610nm~650nm.
As a further improvement of the present invention, the emission wavelength of the green fluorescent material is 510nm~540nm.
As a further improvement of the present invention, the dosage and ratio of the light absorbent and fluorescent material, according to leakage blue light
Degree depending on.The backlight of different size model, the degree for leaking blue light are different.Same backlight, different location leak blue light
Degree is different.The blue light strength of leakage is higher, and the material utilization amount is bigger.The criterion of the material utilization amount and ratio is by backlight
The blue light strength of source edge peripheral regions weakens to consistent with backlight body region, or makes backlight edge peripheral regions
The ratios of three kinds of color of light of red, green, blue adjust to consistent with backlight body region.
As a further improvement of the present invention, the dosage and ratio of the light absorbent and fluorescent material, according to different materials
Depending on the characteristic of material, including light absorbent to the absorptivity of three kinds of color of light of red, green, blue and the luminous efficiency of fluorescent material.
The criterion of the material utilization amount and ratio be the blue light strength of backlight edge peripheral regions is weakened to backlight body region
Domain is consistent, or make the ratio of three kinds of color of light of red, green, blue of backlight edge peripheral regions adjust to backlight main body
Region is consistent.
As a further improvement of the present invention, the light absorbent and fluorescent material are adhered to backlight by adhesive
Source component surface or these materials itself can be adhered to backlight assembly surface, or be that these materials can penetrate into
In backlight assembly, to form color coating.
It as a further improvement of the present invention, further include adhesive in the formula of the color coating, it is specially organic
Silicone resin, epoxy resin, acrylic resin, polyurethane, UV light-cured resin, polypropylene, polycarbonate, ethene-vinyl acetate
One of ester copolymer is a variety of.
It as a further improvement of the present invention, further include the solvent of adhesive in the formula of the color coating, it is specific
For one of aromatic hydrocarbons, alkanes, alcohols, esters, ketone, ethers or a variety of.
As a further improvement of the present invention, the color coating is coated with by modes such as flow coat, spraying, blade coating, transfers
In on backlight assembly.
As a further improvement of the present invention, the color coating is set to reflective membrane, light guide plate, quantum dot optical film, increases
The backlight assemblies such as bright film, diffusion barrier, frame surface.The color coating with a thickness of 10~200 μm, preferably 50~120 μ
m.The thickness of the color coating is depending on leaking blue light degree.The blue light strength of leakage is higher, and coating layer thickness is bigger.
As a further improvement of the present invention, the color coating is set to reflective membrane, light guide plate, quantum dot optical film, increases
The edge of the plate face of the backlight assemblies such as bright film, diffusion barrier.Moreover, the width of the color coating is 0.2~1mm, preferably
For 0.3~0.6mm.
As a further improvement of the present invention, the light absorbent and/or fluorescent material are mixed with adhesive, match plastic
Then water is coated on the backlight assemblies surfaces such as reflective membrane, light guide plate, quantum dot optical film, brightness enhancement film, diffusion barrier, frame, shape
At color coating.Feux rouges can be issued after the light absorbent that blue light can be absorbed and absorption blue light, the fluorescent material of green light exists
Total concentration in the glue is 5~60%, preferably 10~40%.The concentration is depending on leaking blue light degree.The indigo plant of leakage
Luminous intensity is higher, and the material concentration is bigger.
Compared with prior art, have following good effect: the present invention effectively solves to use the high colour gamut optical film of quantum dot
With the leakage blue light defect of the liquid crystal display of blue-ray LED backlight.
Present invention will be further explained below with reference to the attached drawings and examples.
Detailed description of the invention
Fig. 1 is the schematic diagram of the coating location 1 of color coating of the invention in the backlight.
Fig. 2 is the schematic diagram of the coating location 2 of color coating of the invention in the backlight.
Fig. 3 is the schematic diagram of the coating location 3 of color coating of the invention in the backlight.
Fig. 4 is the schematic diagram of the coating location 4 of color coating of the invention in the backlight.
Fig. 5 is the schematic diagram of the coating location 5 of color coating of the invention in the backlight.
Fig. 6 is the schematic diagram of the coating location 6 of color coating of the invention in the backlight.
Fig. 7 is the schematic diagram of the coating location 7 of color coating of the invention in the backlight.
Fig. 8 is the schematic diagram of the coating location 8 of color coating of the invention in the backlight.
Fig. 9 is the schematic diagram of the coating location 9 of color coating of the invention in the backlight.
Figure 10 is the schematic diagram of the coating location 10 of color coating of the invention in the backlight.
Figure 11 is the schematic diagram of the coating location 11 of color coating of the invention in the backlight.
The case where Figure 12 is " backlight assembly is by processing " and " backlight assembly is unprocessed " in the embodiment of the present invention 1
Under, the spectrogram of backlight fringe region emitted light.
The case where Figure 13 is " backlight assembly is by processing " and " backlight assembly is unprocessed " in the embodiment of the present invention 4
Under, the spectrogram of backlight fringe region emitted light.
The case where Figure 14 is " backlight assembly is by processing " and " backlight assembly is unprocessed " in the embodiment of the present invention 5
Under, the spectrogram of backlight fringe region emitted light.
Specific embodiment
The present invention provides a kind of anti-light leakage structure of high colour gamut optical film application of cooperation quantum dot, including backlight, the back
The component of light source includes reflectance coating, light guide plate, quantum dot optical film, brightness enhancement film, diffusion barrier and frame, by the backlight
Reflectance coating, light guide plate, quantum dot optical film, brightness enhancement film, diffusion barrier and frame at least one at surface be equipped with color coating.
The color coating be the coating containing light absorbent and/or fluorescent material, it is intended that the color coating can for containing
The coating of light absorbent, the color coating can be the coating containing fluorescent material, and the color coating can also be containing extinction
The coating of material and fluorescent material.
And the light absorbent or fluorescent material can only be coated on the surface of one of component of the backlight, it can also
It is coated on multiple assembly surfaces of backlight.
The liquid crystal display using quantum dot optical film and blue-ray LED backlight of the prior art includes backlight.It should
Successively layer is set such as lower component backlight from top to bottom: liquid crystal display panel 101, diffusion barrier 102, brightness enhancement film 103, quantum dot optical film
104, light guide plate 105 and reflective membrane 106.Backlight further includes frame 107 and blue LED lamp band 108, frame 107 and liquid crystal surface
The connection of plate 101 forms a cavity, and the cavity is disposed around layer and sets component diffusion barrier 102, brightness enhancement film 103, quantum dot optical film
104, the periphery of light guide plate 105 and reflective membrane 106, blue LED lamp band 108 are placed in frame 107, and are attached at light guide plate 105
Side.
It should be noted that liquid crystal display panel 101, diffusion barrier 102, brightness enhancement film 103, quantum dot optical film 104, light guide plate
105 and reflective membrane 106 are plate, and stacking combines between each other for they, and the surface of each plate plate fitting adjacent thereto is
Plate face, the face that each plate connects with frame 107 are side.
Wherein, the light absorbent is the color material that can absorb blue light, is specially colored dyes or colored pigment.
The colored dyes that blue light can be absorbed include orchil, orange, weld or black dyes；It is described to inhale
The colored pigment for receiving blue light includes red pigment, orange pigment, yellow uitramarine or black pigment.The fluorescent material is to absorb indigo plant
The color material that feux rouges or green light can be issued after light is specially red fluorescence powder, green emitting phosphor, red fluorescence dyestuff or green
Color fluorescent dye.
As shown in Figure 1, being equipped with color coating 111 at the edge of the plate face of light guide plate.Specifically, in the court of light guide plate 105
Color coating 111 is equipped with to four side edges of the plate face of quantum dot optical film 104.This is coating location 1.
As shown in Fig. 2, being equipped with color coating 111 at the edge of the plate face of light guide plate.Specifically, in the court of light guide plate 105
Color coating 111 is equipped with to four side edges of the plate face of reflective membrane 106.This is coating location 2.
As shown in figure 3, being equipped with color coating 111 in the side of light guide plate.Specifically, not being fitted in light guide plate 105
Three sides of blue LED lamp band 108 are equipped with color coating 111.This is coating location 3.
As shown in figure 4, being equipped with color coating 111 at the edge of the plate face of reflective membrane 106.Specifically, in reflective membrane 106
Color coating 111 is equipped with towards four side edges of the plate face of light guide plate 105.This is coating location 4.
As shown in figure 5, being equipped with color coating 111 at the edge of the plate face of quantum dot optical film 104.Specifically, in quantum
Four side edges of the plate face towards brightness enhancement film 103 of point optical film 104 are equipped with color coating 111.This is coating location 5.
As shown in fig. 6, being equipped with color coating 111 at the edge of the plate face of quantum dot optical film 104.Specifically, in quantum
Four side edges of the plate face towards light guide plate 105 of point optical film 104 are equipped with color coating 111.This is coating location 6.
As shown in fig. 7, being equipped with color coating 111 at the edge of the plate face of brightness enhancement film 103.Specifically, in brightness enhancement film 103
Color coating 111 is equipped with towards four side edges of the plate face of diffusion barrier 102.This is coating location 7.
As shown in figure 8, being equipped with color coating 111 at the edge of the plate face of brightness enhancement film 103.Specifically, in brightness enhancement film 103
Color coating 111 is equipped with towards four side edges of the plate face of quantum dot optical film 104.This is coating location 8.
As shown in figure 9, being equipped with color coating 111 at the edge of the plate face of diffusion barrier 102.Specifically, in diffusion barrier 102
Color coating 111 is equipped with towards four side edges of the plate face of liquid crystal display panel 101.This is coating location 9.
As shown in Figure 10, color coating 111 is equipped at the edge of the plate face of diffusion barrier 102.Specifically, in diffusion barrier 102
The plate face towards brightness enhancement film 103 four side edges be equipped with color coating 111.This is coating location 10.
As shown in figure 11, color coating 111 is equipped in the medial surface of the frame of backlight.Specifically, with blue LED lamp
Except the corresponding side of band 108, three medial surfaces of the frame of remaining backlight are equipped with color coating 111.This is coating
Position 11.
Wherein, the fluorescent material that the color coating 111 uses for the material of feux rouges, green light can be issued after absorbing blue light,
Material using this material as solution leakage Blue-light filtering can issue the material of other color of light without selection, be due to quantum dot height
Colour gamut optical film issues feux rouges and green light, does not preferably issue the light of other colors under the excitation of blue-ray LED.When addition can be sent out
Out when the material of other color of light, the luminescent color that will lead to quantum dot optical film is not pure, to reduce the color of display equipment
Domain.
The light absorbent and/or fluorescent material are mixed with adhesive, are made into glue, are then coated on reflective membrane, leaded light
The backlight assemblies surfaces such as plate, quantum dot optical film, brightness enhancement film, diffusion barrier, frame form color coating 111.The extinction material
Material and total concentration of the fluorescent material in the glue are 5~60%, preferably 10~40%.The concentration view leakage blue light degree
Depending on.The blue light strength of leakage is higher, and the material concentration is bigger.
Embodiment 1~13 be 111 position of color coating preferred combination and the coating location used by color apply
Layer 111.As shown in table 1.
Material used by the appropriately combined and described coating location of 1 color coating of table, 111 position
Compared with existing light leakage technology, the beneficial effects of the present invention are: can effectively solve by using color coating
Using the leakage Blue-light filtering of the blue-ray LED backlight edge surrounding of quantum dot optical film, the image for promoting related display device is aobvious
Show quality.It is embodiment 1 (Figure 12), embodiment 4 (Figure 13) and embodiment 5 (Figure 14) are to blue-ray LED as shown in Figure 12~14
Before the component of backlight carries out color coating processing, the blue light strength of backlight edge surrounding is much higher than green light and red light intensity,
And after color coating is handled, the blue light strength and green light and red light intensity of backlight edge surrounding are close, illustrate the present invention
The method of offer is effective.Moreover, the amplitude that blue light weakens can be adjusted arbitrarily according to actual needs.
The invention is not limited to above embodiment, if not departing from the present invention to various changes or modifications of the invention
Spirit and scope, if these modification and variations belong within the scope of claim and equivalent technologies of the invention, then this hair
It is bright to be also intended to encompass these modification and variations.
Claims (7)
1. a kind of anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot, it is characterised in that: including backlight, the back
Light source includes frame, liquid crystal display panel and blue LED lamp band, and the frame is connect with liquid crystal display panel surrounds a cavity, in the cavity
Inside layer is equipped with diffusion barrier, brightness enhancement film, quantum dot optical film, light guide plate and reflective membrane from top to bottom, and the blue LED lamp band is set to
In frame, and it is attached at the side of light guide plate；The light guide plate towards quantum dot optical film plate face four side edges, described lead
Four side edges of plate face, three sides for not posting blue LED lamp band of the light guide plate of tabula rasa towards reflective membrane are set respectively
There is the coating containing fluorescent material；The four side edges on the reflective membrane towards the surface of light guide plate are equipped with the coating containing light absorbent；
The light absorbent absorbs the excessive blue light of blue-ray LED backlight edge surrounding, and the fluorescent material will be excessive after absorbing blue light
Blue light be transformed into white light；The thickness of the coating containing light absorbent and the coating containing fluorescent material is respectively 10~200 μm,
Width is respectively 0.2~1mm.
2. the anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot as described in claim 1, it is characterised in that: described to contain
The coating for having fluorescent material is the coating that the material of feux rouges or green light can be issued after absorbing blue light, and the feux rouges and green light of sending combine
The blue light that the blue-ray LED backlight issues, is combined into white light.
3. the anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot as described in claim 1, it is characterised in that: the suction
Luminescent material is colored pigment or colored dyes, and the fluorescent material is fluorescent powder or fluorescent dye.
4. cooperating the anti-light leakage structure of the high colour gamut optical film application of quantum dot as described in Claims 2 or 3, it is characterised in that: institute
Stating fluorescent material is red fluorescence powder, green emitting phosphor, red fluorescence dyestuff or Green fluorescent dye.
5. the anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot as claimed in claim 4, it is characterised in that: described red
The emission wavelength of color fluorescent powder or red fluorescence dyestuff is 610nm~650nm.
6. the anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot as claimed in claim 4, it is characterised in that: described green
The emission wavelength of color fluorescent powder or Green fluorescent dye is 510nm~540nm.
7. the anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot as described in claim 1, it is characterised in that: described to contain
The coating method of the coating of light absorbent and the coating containing fluorescent material is flow coat, spraying, blade coating or transfer modes.
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| CN201510606403.5A CN105116611B (en) | 2015-09-22 | 2015-09-22 | A kind of anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot |
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| CN201510606403.5A CN105116611B (en) | 2015-09-22 | 2015-09-22 | A kind of anti-light leakage structure of the high colour gamut optical film application of cooperation quantum dot |
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| CN105116611A (en) | 2015-12-02 |
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