CN207114972U - The separated LCD backlight component of red, green quantum dot - Google Patents
The separated LCD backlight component of red, green quantum dot Download PDFInfo
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- CN207114972U CN207114972U CN201720958003.5U CN201720958003U CN207114972U CN 207114972 U CN207114972 U CN 207114972U CN 201720958003 U CN201720958003 U CN 201720958003U CN 207114972 U CN207114972 U CN 207114972U
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Abstract
The utility model provides a kind of red, the separated LCD backlight component of green quantum dot, it is characterized in that the light source is placed in below the light guide plate side or diffuser plate, the red quantum dot is dispersed in the first layer film on the light guide plate or diffuser plate, the green quantum dot is dispersed in the second layer film on the first layer film, it is the optically coupled device between the first layer film and the second layer film, the optically coupled device is used to light being coupled to the second layer film from the first layer film, reduce simultaneously or prevent light from returning to the first layer film from the second layer film.The utility model separates red quantum dot and green quantum dot, and utilize the light blocking effect of optically coupled device, can effectively it be reduced or avoided from blue light to green light again to indirect conversion as red light, so as to improve the overall quantum efficiency of quantum dot light converting system, the energy consumption of LCD backlight component is reduced.
Description
Technical field
It the utility model is related to LCD backlight technical field, more particularly to a kind of liquid red, green quantum dot is separated
Brilliant display backlight component.
Background technology
Colour liquid crystal display device turns into a kind of product ubiquitous in daily life and industrial production, associated
Various standards and technology also in continuous upgrading, such as the BT2020 standards recommended of ITU-R screen resolution ratio,
The higher standard all fixed on frame rate, color-resolution, promote the continuous progress of the technology of correlation.Wherein technology of quantum dots
As a technology that liquid crystal display color rendering effect can be substantially improved, the very big concern of industrial circle, phase are caused
Product is closed also to have begun to enter market.
Quantum dot is the nano level crystal grain of semi-conducting material, and typically with nucleocapsid structure, its energy level is by its geometry
The influence of form and change, thus the size of quantum dot core and shell can be controlled by changing the synthesis condition of quanta point material
And then it is controlled to send the light of different colours in excited target；For the quantum dot of identical material, size is bigger, issued light
Wavelength it is longer.Shooting condition can substantially be divided into luminescence generated by light and electroluminescent.The current comparative maturity of photoluminescent techniques, efficiency
Also it is higher.The method of luminescence generated by light is primarily used in the backlight assembly of liquid crystal display at present, and in general way is to send out
After the quantum dot of red light and the quantum dot of glow green mix according to a certain percentage, the diverse location of backlight assembly is placed in.
But for the quantum dot of red, the light that can not only absorb blueness changes into the light of red, can also inhale
Receive the light that the green light sent by green quantum dot changes into red；This is that is in red quantum dot and green quantum dot
In mixed uniformly system, the red light sent has two paths：One is directly converted by blue light, and one is blue light
Light first changes into green light and is then converted into red light.Green quantum dot absorbs the green light given off after the exciting light of blueness and existed
Intensity in all directions is identical, and this also causes light path increase of the green light in the system of quanta point material, further
Increased therewith by the chance that red quantum dot absorbs.Result caused by so is in this red quantum dot and green quantum dot
Mixed system in the green light that is sent of quite a few green quantum dot be converted to the light of red again.It is if green
Quantum efficiency with red quantum dot is all 80%, then for this path of the latter, the equivalent amount from blue light to red light
Sub- efficiency will be reduced to 64%, so as to tie down the reduction of the quantum efficiency of whole system.
The content of the invention
In order to solve the above-mentioned technical problem, the utility model provides a kind of liquid crystal display back of the body red, green quantum dot is separated
Optical assembly, it is characterised in that including light source, red quantum dot, green quantum dot, optically coupled device and light guide plate, the light source is put
In the light guide plate side, the red quantum dot is dispersed in the first layer film on the light guide plate, the green
Quantum dot is dispersed in the second layer film on the first layer film, is described between the first layer film and the second layer film
Optically coupled device, the optically coupled device is used to light being coupled to the second layer film from the first layer film, while reduces or prevent
Light returns to the first layer film from the second layer film.
A kind of separated LCD backlight component of red green quantum dot, it is characterised in that including light source, red quantum dot,
Green quantum dot, optically coupled device and diffuser plate, some light sources are placed in below the diffuser plate, and the red quantum dot is equal
In even the first layer film being dispersed on the diffuser plate, the green quantum dot is dispersed in second on the first layer film
It is the optically coupled device between the first layer film and the second layer film in layer film, the optically coupled device is used for light
The second layer film is coupled to from the first layer film, while reduces or prevents light from returning to the first layer film from the second layer film.
The optically coupled device is thin film, is replaced by thickness for the film of two kinds of refractive indexes of 1/4 green optical wavelength
Stack and be made.
The red quantum dot, green quanta point material include but is not limited to silicon, germanium, tin, selenium, tellurium, boron, carbon, phosphorus, cobalt,
Gold, boron nitride, boron phosphide, arsenic boron, aluminium nitride, aluminum phosphate, aluminium arsenide, aluminium antimonide, gallium nitride, gallium phosphide, GaAs, antimony
Gallium, indium nitride, indium phosphide, indium arsenide, indium antimonide, zinc oxide, zinc sulphide, zinc selenide, zinc telluridse, cadmium sulfide, cadmium selenide, telluride
Cadmium, mercuric sulphide, mercury selenide, telluride mercury, vulcanization beryllium, selenizing beryllium, telluride beryllium, magnesium sulfide, magnesium selenide, germanium sulfide, Germanium selenide, telluride
Germanium, artificial gold, stannic selenide, telluride tin, lead oxide, vulcanized lead, lead selenide, lead telluride, phosphorized copper, copper chloride, copper bromide, iodate
Copper, silicon nitride, germanium nitride, aluminum oxide,（Aluminium, gallium, indium）2、（Sulphur, selenium, tellurium）3Or one or more groups in char combustion aluminium
Close；The quantum dot is core/shell structure, including but not limited to cadmium selenide/zinc sulphide, indium phosphide/zinc sulphide, indium phosphide/selenizing
Zinc, lead selenide/vulcanized lead, cadmium selenide/cadmium sulfide, cadmium telluride/cadmium sulfide, cadmium telluride/zinc sulphide.
The beneficial effects of the utility model are：The utility model separates red quantum dot and green quantum dot, and
Using the light blocking effect of optically coupled device, can effectively be reduced or avoided from blue light to green light again to as red light
Indirect conversion, so as to improve the overall quantum efficiency of quantum dot light converting system, reduce the energy consumption of LCD backlight component.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present utility model；
Fig. 2 is the structural representation of another embodiment of the present utility model；
Fig. 3 is transmitance of the optically coupled device of the present utility model to different wave length.
Embodiment
The utility model is described in more detail below with reference to accompanying drawings, which show of the present utility model preferred
Embodiment, it should be appreciated that those skilled in the art can change the utility model described here and still realize the utility model
Advantageous effects.Therefore, description below is appreciated that for the widely known of those skilled in the art, and is not intended as pair
Limitation of the present utility model.
In figure, 1, light source；2nd, red quantum dot；3rd, green quantum dot；4th, optically coupled device；5th, light guide plate；6th, diffuser plate.
As shown in figure 1, the light source 1 is placed in the side of light guide plate 5, the red quantum dot 2 is dispersed in described
In the first layer film on light guide plate 5, in the second layer film that green 3 points of the quantum is dispersed on the first layer film,
It is the optically coupled device 4 between the first layer film and the second layer film, the optically coupled device 4 is used for light from first layer
Film is coupled to the second layer film, while reduces or prevent light from returning to the first layer film from the second layer film.Light source 1 can use
Light emitting diode.
As shown in Fig. 2 some light sources 1 are placed in the lower section of diffuser plate 6, the red quantum dot 2 is dispersed in
In the first layer film on the diffuser plate, the green quantum dot 3 is dispersed in the second layer film on the first layer film
In, it is the optically coupled device 4 between the first layer film and the second layer film, the optically coupled device 4 is used for light from the
Thin film is coupled to the second layer film, while reduces or prevent light from returning to the first layer film from the second layer film.
The red quantum dot, green quanta point material include but is not limited to silicon, germanium, tin, selenium, tellurium, boron, carbon, phosphorus, cobalt,
Gold, boron nitride, boron phosphide, arsenic boron, aluminium nitride, aluminum phosphate, aluminium arsenide, aluminium antimonide, gallium nitride, gallium phosphide, GaAs, antimony
Gallium, indium nitride, indium phosphide, indium arsenide, indium antimonide, zinc oxide, zinc sulphide, zinc selenide, zinc telluridse, cadmium sulfide, cadmium selenide, telluride
Cadmium, mercuric sulphide, mercury selenide, telluride mercury, vulcanization beryllium, selenizing beryllium, telluride beryllium, magnesium sulfide, magnesium selenide, germanium sulfide, Germanium selenide, telluride
Germanium, artificial gold, stannic selenide, telluride tin, lead oxide, vulcanized lead, lead selenide, lead telluride, phosphorized copper, copper chloride, copper bromide, iodate
Copper, silicon nitride, germanium nitride, aluminum oxide,（Aluminium, gallium, indium）2、（Sulphur, selenium, tellurium）3Or one or more groups in char combustion aluminium
Close；The quantum dot is core/shell structure, including but not limited to cadmium selenide/zinc sulphide, indium phosphide/zinc sulphide, indium phosphide/selenizing
Zinc, lead selenide/vulcanized lead, cadmium selenide/cadmium sulfide, cadmium telluride/cadmium sulfide, cadmium telluride/zinc sulphide.
The light source 1 sends blue light；Blue light is first coupled to red quantum dot 2, a part of blue light conversion therein
Into red light；Then remaining blue light and the mixed light of red light arrive green quantum dot 3 by optically coupled device 4, therein
A part of blue light is converted into green light.
The optically coupled device 4 is thin film, is replaced by thickness for the film of two kinds of refractive indexes of 1/4 green optical wavelength
Stack and be made.The film of formation is to the transmitance of different wave length as shown in figure 3,470 nanometers to 600 nanometers of green light light
All reflected；Red light more than 600 nanometers can be passed through with uncrossed；Less than 470 nanometers of blue light passes through
Part is reflected, but the blue light reflected can be recycled by backlight assembly, will not waste.
It is described in detail above by embodiment to of the present utility model, but the content is only of the present utility model
Preferred embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.It is all to be made according to present utility model application scope
Equivalent change with improve etc., all should still belong within patent covering scope of the present utility model.
Claims (4)
1. the separated LCD backlight component of red, green quantum dot, it is characterised in that including light source, red quantum dot, green
Quantum dot, optically coupled device and light guide plate, the light source are placed in the light guide plate side, and the red quantum dot is dispersed in
In the first layer film on the light guide plate, the green quantum dot is dispersed in the second layer film on the first layer film
In, it is the optically coupled device between the first layer film and the second layer film, the optically coupled device is used for light from first
Layer film is coupled to the second layer film, while reduces or prevent light from returning to the first layer film from the second layer film.
2. LCD backlight component red, green quantum dot is separated as claimed in claim 1, it is characterised in that the optocoupler
Attach together that to put be thin film, alternately stacked and be made for the film of two kinds of refractive indexes of 1/4 green optical wavelength by thickness.
3. the separated LCD backlight component of red, green quantum dot, it is characterised in that including light source, red quantum dot, green
Quantum dot, optically coupled device and diffuser plate, some light sources are placed in below the diffuser plate, and the red quantum dot is uniformly divided
It is dispersed in the first layer film on the diffuser plate, the second layer that the green quantum dot is dispersed on the first layer film is thin
It is the optically coupled device between the first layer film and the second layer film in film, the optically coupled device is used for light from the
Thin film is coupled to the second layer film, while reduces or prevent light from returning to the first layer film from the second layer film.
4. LCD backlight component red, green quantum dot is separated as claimed in claim 3, it is characterised in that the optocoupler
Attach together that to put be thin film, alternately stacked and be made for the film of two kinds of refractive indexes of 1/4 green optical wavelength by thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720958003.5U CN207114972U (en) | 2017-08-02 | 2017-08-02 | The separated LCD backlight component of red, green quantum dot |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720958003.5U CN207114972U (en) | 2017-08-02 | 2017-08-02 | The separated LCD backlight component of red, green quantum dot |
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| CN207114972U true CN207114972U (en) | 2018-03-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549175A (en) * | 2018-04-13 | 2018-09-18 | 青岛海信电器股份有限公司 | A kind of quantum dot light emitting device, quantum dot backlight module, liquid crystal display device |
| CN109991698A (en) * | 2019-03-06 | 2019-07-09 | 拓米(成都)应用技术研究院有限公司 | A kind of quantum dot composite light guide plate and preparation method thereof, backlight module |
| CN110058449A (en) * | 2019-05-13 | 2019-07-26 | 深圳市华星光电技术有限公司 | Quantum dot liquid crystal display |
| CN110082959A (en) * | 2019-04-30 | 2019-08-02 | 京东方科技集团股份有限公司 | A kind of fluorescent film and preparation method thereof and lamp bar |
| CN111897161A (en) * | 2020-08-14 | 2020-11-06 | 合肥京东方光电科技有限公司 | Display module and display device |
| CN113805377A (en) * | 2020-06-11 | 2021-12-17 | 拓米(成都)应用技术研究院有限公司 | Color-changing film and preparation method for improving optical characteristics thereof |
-
2017
- 2017-08-02 CN CN201720958003.5U patent/CN207114972U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549175A (en) * | 2018-04-13 | 2018-09-18 | 青岛海信电器股份有限公司 | A kind of quantum dot light emitting device, quantum dot backlight module, liquid crystal display device |
| CN109991698A (en) * | 2019-03-06 | 2019-07-09 | 拓米(成都)应用技术研究院有限公司 | A kind of quantum dot composite light guide plate and preparation method thereof, backlight module |
| CN110082959A (en) * | 2019-04-30 | 2019-08-02 | 京东方科技集团股份有限公司 | A kind of fluorescent film and preparation method thereof and lamp bar |
| CN110082959B (en) * | 2019-04-30 | 2021-11-16 | 京东方科技集团股份有限公司 | Fluorescent film, preparation method thereof and lamp strip |
| CN110058449A (en) * | 2019-05-13 | 2019-07-26 | 深圳市华星光电技术有限公司 | Quantum dot liquid crystal display |
| CN113805377A (en) * | 2020-06-11 | 2021-12-17 | 拓米(成都)应用技术研究院有限公司 | Color-changing film and preparation method for improving optical characteristics thereof |
| CN111897161A (en) * | 2020-08-14 | 2020-11-06 | 合肥京东方光电科技有限公司 | Display module and display device |
| CN111897161B (en) * | 2020-08-14 | 2022-08-30 | 合肥京东方光电科技有限公司 | Display module and display device |
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