CN111592878A - Quantum rod, manufacturing method thereof and liquid crystal display panel - Google Patents
Quantum rod, manufacturing method thereof and liquid crystal display panel Download PDFInfo
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- AQCDIIAORKRFCD-UHFFFAOYSA-N cadmium selenide Chemical compound [Cd]=[Se] AQCDIIAORKRFCD-UHFFFAOYSA-N 0.000 claims description 4
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 3
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- IGUWUAGBIVHKDA-UHFFFAOYSA-N cadmium;sulfanylidenezinc Chemical compound [Zn].[Cd]=S IGUWUAGBIVHKDA-UHFFFAOYSA-N 0.000 claims description 3
- DLFDEDJIVYYWTB-UHFFFAOYSA-N dodecyl(dimethyl)azanium;bromide Chemical compound Br.CCCCCCCCCCCCN(C)C DLFDEDJIVYYWTB-UHFFFAOYSA-N 0.000 claims description 3
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- 238000010438 heat treatment Methods 0.000 claims description 3
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 claims description 3
- -1 indium-phosphorus compound Chemical class 0.000 claims description 3
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 claims description 3
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 3
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 40
- 239000000463 material Substances 0.000 description 8
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/74—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
- C09K11/7492—Arsenides; Nitrides; Phosphides
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
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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
- G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
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Abstract
The application provides a quantum rod and a manufacturing method thereof, and a liquid crystal display panel, wherein the quantum rod comprises a quantum rod main body and an electric field alignment substance modified on the outer side of the quantum rod main body, and the electric field alignment substance is used for improving the dielectric anisotropy of the quantum rod main body and enabling the quantum rod to have electric field sensitivity, so that the quantum rod is easy to realize directional arrangement under the action of an electric field; the liquid crystal display panel comprises the quantum rod film layer applying the quantum rod, so that the production cost of the liquid crystal display panel is reduced, and the light source and energy utilization rate of the liquid crystal display panel are improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a quantum rod, a manufacturing method of the quantum rod and a liquid crystal display panel.
Background
The lcd is a widely used display device, and its main structure includes a backlight module and a liquid crystal panel, and a polarizer is disposed between the backlight module and the liquid crystal panel to make the polarization directions of the light beams emitted from the backlight module consistent when passing through the liquid crystal panel. The polaroids used at present are absorption type polaroids, namely, when natural light emitted by the backlight module passes through the polaroids, components in the absorption axis direction of the polaroids are absorbed and cannot pass through, so that the transmittance of the polaroids to backlight generated by the backlight module is not more than 50% theoretically, and light source loss and energy waste are caused.
The liquid crystal display is provided with a structure comprising quantum rods, so that the light rays emitted by the backlight module are maximally consistent with the direction of a through axis of the polarizer, which is a common means for solving the problems in the prior art. The quantum rod is a one-dimensional linear nano structure, and can be converted into polarized light after absorbing natural light emitted by the backlight module, so that the light source loss can not be caused. However, the key to ensure the function of the quantum rod is to ensure that the arrangement direction of the quantum rod is consistent with the direction of the passing axis of the polarizer, and the problem of high-precision directional arrangement of the quantum rod is difficult to solve in the prior art, so that the utilization rate of the light source is still low although the quantum rod structure is used in the prior liquid crystal display.
Disclosure of Invention
Based on the defects in the prior art, the electric field alignment substance is modified on the outer side of the quantum rod main body, so that the quantum rod has electric field sensitivity, and further, the directional arrangement of the electric field induced quantum rod is easy to realize; the liquid crystal display panel using the quantum rod has high light source and energy utilization rate.
The present application provides a quantum rod, comprising: the quantum rod comprises a quantum rod main body and an electric field alignment substance modified on the outer side of the quantum rod main body, wherein the electric field alignment substance is used for improving the dielectric anisotropy of the quantum rod main body and enabling the quantum rod to have electric field sensitivity.
According to an embodiment of the present application, the electric field alignment material is modified on a side surface of the quantum rod body.
According to an embodiment of the present application, the electric field alignment material is modified at an end of the quantum rod body.
According to an embodiment of the present application, the electric field alignment material is a gold nanoparticle.
According to an embodiment of the present application, the quantum rod body is composed of a luminescent core and an inorganic protective shell wrapping the luminescent core, the luminescent core is composed of one or more of a zinc-cadmium-selenium compound, an indium-phosphorus compound, a cadmium-selenium-tellurium compound and an indium-arsenic compound, and the inorganic protective shell is composed of one or more of a cadmium-sulfur compound, a zinc-selenium compound, a zinc-cadmium-sulfur compound, a zinc-sulfur compound and a zinc-oxygen compound.
The application also provides a quantum rod manufacturing method, which comprises the following steps:
preparing a solution comprising a quantum rod body;
preparing a solution containing an electric field alignment substance precursor;
and mixing the solution containing the quantum rod main body with the solution containing the electric field alignment substance precursor, and reacting under illumination and/or heating conditions, wherein the electric field alignment substance precursor generates an electric field alignment substance on the surface of the quantum rod main body to obtain the quantum rod.
According to an embodiment of the present application, the method of preparing a solution comprising quantum rod bodies is:
preparing a first solution containing a cadmium-sulfur compound or/and a cadmium-selenium compound and a sulfur precursor;
preparing a second solution containing n-trioctylphosphine oxide, n-trioctylphosphine and phosphonic acid;
mixing the first solution and the second solution for reaction to generate a third solution containing the quantum rod main body;
separating the quantum rod bodies from the third solution;
and dispersing the quantum rod main body in a toluene solution to obtain the solution containing the quantum rod main body.
According to an embodiment of the present application, the method for configuring the solution containing the electric field alignment substance precursor comprises:
and fully mixing p-dodecylamine or octadecylamine or trioctylamine with dodecyl dimethyl ammonium bromide and gold chloride in a toluene solution to obtain the solution containing the electric field alignment substance precursor.
According to an embodiment of the present application, the conditions for the mixing reaction of the solution containing the quantum rod host and the solution containing the electric field alignment substance precursor are as follows:
temperature conditions: 0 to 40 degrees centigrade;
the illumination condition is as follows: laser irradiation, wavelength 473 nm, power 40 mw.
The present application further provides a liquid crystal display panel, which includes:
a backlight module;
the quantum rod film layer is arranged on the light-emitting surface of the backlight module and comprises a substrate layer and quantum rods which are arranged on the substrate layer in an oriented mode, wherein the quantum rods are the quantum rods or the quantum rods manufactured by the quantum rod manufacturing method;
and the liquid crystal panel is arranged on the quantum rod film layer.
The beneficial effect of this application is: the quantum rod comprises a quantum rod main body and an electric field alignment substance, and the electric field alignment substance is utilized to enable the quantum rod to have electric field sensitivity, so that the quantum rod is easy to realize directional arrangement under the action of an electric field; the application provides a liquid crystal display panel has contained the quantum rod rete of using this quantum rod, is of value to and reduces liquid crystal display panel manufacturing cost to improve liquid crystal display panel's light source and energy utilization.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a first structure of a quantum rod provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a second structure of a quantum rod provided in an embodiment of the present application;
FIG. 3 is a flow chart of a method for fabricating a quantum rod according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a quantum rod film layer structure in the liquid crystal display panel shown in fig. 4.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
The embodiment of the application provides a quantum rod, through the quantum rod main part outside modification electric field of quantum rod is joined in marriage the thing, makes the quantum rod has electric field sensitivity, and then can be through the induction of electric field effect the directional arrangement of quantum rod is of value to be applied to in the liquid crystal display panel to improve liquid crystal display panel's light source and energy utilization.
As shown in fig. 1 and fig. 2, fig. 1 and fig. 2 are schematic diagrams of two structures of a quantum rod provided in an embodiment of the present application. The quantum rod 10 provided by the embodiment of the application comprises a quantum rod main body 11 and an electric field alignment substance 12 modified on the outer side of the quantum rod main body 11, wherein the electric field alignment substance 12 is used for improving the dielectric anisotropy of the quantum rod main body 11, so that the quantum rod 10 has electric field sensitivity. The term "dielectric anisotropy" refers to a polarization characteristic that internal charges of a dielectric body are directionally concentrated toward ends under the action of an electric field, and charges at two corresponding ends of the dielectric body are opposite to each other; the term "electric field sensitivity" refers to the property of a dielectric medium that is directionally distributed in an electric field by an electric field; the stronger the dielectric anisotropy, the stronger the electric field sensitivity of the dielectric; for the present application, the quantum rod 10 is the dielectric, and the electric field alignment substance 12 is modified on the surface of the quantum rod main body 11, so that the quantum rod 10 exhibits stronger dielectric anisotropy, and thus the quantum rod 10 has stronger ability of being oriented by the electric field in the electric field.
The modification of the electric field alignment material 12 on the outer side of the quantum rod main body 11 means: the electric field alignment substance 12 may be connected to the quantum rod body 11 by a chemical bond, or the electric field alignment substance 12 may be connected to the quantum rod body 11 by a physical lap joint.
According to an embodiment of the present disclosure, as shown in fig. 1, the electric field alignment material 12 may be modified on a side surface of the quantum rod body 11. It should be understood that the quantum rod body 11 has a one-dimensional linear structure, and the outer surface along the length direction of the quantum rod body 11 is the side surface of the quantum rod body 11. The electric field alignment substance 12 and the quantum rod main body 11 have a larger dielectric difference, and the electric field alignment substance 12 is modified on the side surface of the quantum rod main body 11, so that the electric polarity of the quantum rod main body 11 under an electric field is increased, the dielectric anisotropy of the quantum rod main body 11 is further improved, and the quantum rods 10 are favorably arranged in an oriented manner under the action of the electric field.
Optionally, the electric field alignment substances 12 are asymmetrically distributed outside the quantum rod main body 11, so as to further improve the electric polarity of the quantum rod main body 11 under the action of the electric field.
According to an embodiment of the present application, as shown in fig. 2, the electric field alignment material 12 may be further modified at an end of the quantum rod body 11. It should be understood that the quantum rod body 11 has a one-dimensional linear structure, and two end faces along the quantum rod body 11 are the end parts of the quantum rod body 11. The electric field alignment substance 12 and the quantum rod main body 11 have a larger dielectric difference, and the electric field alignment substance 12 is modified at the end of the quantum rod main body 11, so that the electric polarity of the quantum rod main body 11 under an electric field is further increased, the dielectric anisotropy of the quantum rod main body 11 is further improved, and the quantum rods 10 are favorably arranged in an oriented manner under the action of the electric field.
Optionally, the electric field alignment material 12 is only present at one end of the quantum rod main body 11, so as to further increase the dielectric difference between the two ends of the quantum rod main body 11, so as to maximize the dielectric anisotropy of the quantum rod main body 11, which is beneficial to realizing the directional arrangement of the quantum rod 10 under the action of a lower electric field.
Optionally, the electric field alignment objects 12 are gold nanoparticles. It should be understood that gold is a better conductive inert metal, and its internal electrons are more easily gathered in the direction opposite to the electric field under the action of the electric field, thus showing a larger electric polarity; in the present application, the size of the gold nanoparticles is smaller than that of the quantum rod main body 11, so that the quantum rod main body 11 shows an electric polarization phenomenon of local charge concentration under the action of an electric field, which is beneficial to the directional arrangement of the quantum rod 10.
Alternatively, the quantum rod body 11 may be a composite quantum rod, such as a composite quantum rod of a cadmium-selenium compound and silica hydrogel, a perovskite-type quantum rod, or a core-shell quantum rod; the quantum rod with the core-shell structure consists of a luminescent core and an electrodeless protective shell wrapping the luminescent core, wherein the luminescent core consists of one or more of a zinc-cadmium-selenium compound, an indium-phosphorus compound, a cadmium-selenium-tellurium compound and an indium-arsenic compound, and the electrodeless protective shell consists of one or more of a cadmium-sulfur compound, a zinc-selenium compound, a zinc-cadmium-sulfur compound, a zinc-sulfur compound and a zinc-oxygen compound; the quantum rod body 11 is preferably a quantum rod of the core-shell structure, such that the quantum rod body 11 has the potential to produce a greater electrical polarity.
To sum up, the quantum stick that this application embodiment provided includes quantum stick main part and electric field alignment thing, utilizes the electric field alignment thing makes the quantum stick has the electric field sensitivity, and then can be through the induction of electric field effect the directional arrangement of quantum stick is of value to be applied to in the liquid crystal display panel to improve liquid crystal display panel's light source and energy utilization.
The embodiment of the application further provides a manufacturing method of the quantum rod, the manufacturing step of adding the electric field alignment substance in the preparation process of the quantum rod main body is adopted, so that the finally manufactured quantum rod comprises the quantum rod main body and the electric field alignment substance which is modified on the outer side of the quantum rod main body, and therefore the quantum rod has electric field sensitivity and is favorable for directional arrangement of the quantum rod under the action of an electric field.
As shown in fig. 3, the quantum rod manufacturing method includes the following steps:
step S1, preparing the solution containing the quantum rod main body, which specifically comprises the following operation steps.
Preparing a first solution containing a cadmium-sulfur compound or/and a cadmium-selenium compound and a sulfur precursor; preparing a second solution containing n-trioctylphosphine oxide, n-trioctylphosphine and phosphonic acid; mixing the first solution and the second solution to react under the condition that the second solution is 360-380 ℃ to generate a third solution containing the quantum rod main body; separating the quantum rod bodies from the third solution by extraction or filtration; finally, the quantum rod body separated from the third solution is dispersed in a toluene solution, thereby obtaining the solution containing the quantum rod body.
Step S2, preparing a solution containing the electric field alignment substance precursor, specifically including the following operation steps.
And (2) taking a certain amount of p-dodecylamine or octadecylamine or trioctylamine, fully mixing with dodecyl dimethyl ammonium bromide and gold chloride in a toluene solution, and continuously using ultrasonic vibration treatment to accelerate mixing in the mixing process until the mixed solution is changed from dark brown to golden, thus obtaining the solution containing the electric field alignment substance precursor.
Step S3, mixing the solution containing the quantum rod main body and the solution containing the electric field alignment substance precursor, and reacting under illumination and/or heating conditions, wherein the electric field alignment substance precursor generates an electric field alignment substance on the surface of the quantum rod main body to obtain the quantum rod.
Further, the reaction temperature is controlled by water or water bath during the reaction, and the illumination condition is controlled by a laser emitter.
Optionally, the conditions for the mixing reaction of the solution containing the quantum rod main body and the solution containing the electric field alignment substance precursor are as follows: temperature conditions: 0 to 40 degrees centigrade; the illumination condition is as follows: laser irradiation, wavelength 473 nm, power 40 mw. The quantum rod manufactured under this condition is a quantum rod structure in which the electric field alignment substance 11 is modified at the end of the quantum rod main body 12 as shown in fig. 2.
Optionally, the conditions for the mixing reaction of the solution containing the quantum rod main body and the solution containing the electric field alignment substance precursor are as follows: temperature conditions: 40 to 400 ℃; no illumination is needed. The quantum rod manufactured under the condition is a quantum rod structure in which the electric field alignment substance 11 is modified on the side surface of the quantum rod main body 12 as shown in fig. 1.
Further, the electric field alignment material prepared by the method is gold nanoparticles.
In summary, the quantum rod manufacturing method provided by the embodiment of the present application includes a quantum rod main body preparation process and an electric field alignment substance preparation process on the quantum rod main body, so that the finally manufactured quantum rod includes the quantum rod main body and the electric field alignment substance modified on the outer side of the quantum rod main body, and thus the quantum rod has electric field sensitivity, which is beneficial to the directional arrangement of the quantum rod under the action of an electric field.
The embodiment of the present application further provides a liquid crystal display panel 20, as shown in fig. 4 and fig. 5, the liquid crystal display panel 20 includes a backlight module 21, a quantum rod film layer 22 disposed on a light emitting surface of the backlight module 21, and a liquid crystal panel 23 disposed on the quantum rod film layer 22.
The quantum rod film layer 22 includes a substrate layer 221 and quantum rods 10 arranged on the substrate layer 221 in an oriented manner, and the quantum rods 10 are quantum rods provided in the above embodiments of the present application or quantum rods manufactured by the quantum rod manufacturing method provided in the above embodiments of the present application.
In the manufacturing process of the quantum rod film layer 22, a solution containing the quantum rod 10 is uniformly coated on the substrate layer 221, then an electric field is applied to the quantum rod film layer 22, the quantum rod 10 realizes directional arrangement under the action of the electric field, and the manufacturing process of the quantum rod film layer 22 is completed after drying treatment.
It should be understood that the liquid crystal display panel provided in this embodiment includes the quantum rod film layer formed by the quantum rod provided in this embodiment or the quantum rod prepared by the quantum rod manufacturing method provided in this embodiment, so that the directional arrangement of the quantum rods in the quantum rod film layer is easily achieved, the production cost of the liquid crystal display panel is reduced, and the light source and energy utilization rate of the liquid crystal display panel is improved.
It should be noted that, although the present application has been described with reference to specific examples, the above-mentioned examples are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be limited by the appended claims.
Claims (10)
1. A quantum rod, comprising: the quantum rod comprises a quantum rod main body and an electric field alignment substance modified on the outer side of the quantum rod main body, wherein the electric field alignment substance is used for improving the dielectric anisotropy of the quantum rod main body and enabling the quantum rod to have electric field sensitivity.
2. The quantum rod of claim 1, wherein the electric field alignment is modified on a side of the quantum rod body.
3. The quantum rod of claim 1, wherein the electric field alignment is modified at an end of the quantum rod body.
4. The quantum rod of claim 1, wherein the electric field alignment species are gold nanoparticles.
5. The quantum rod of claim 1, wherein the quantum rod body is composed of a luminescent core and an inorganic protective shell encasing the luminescent core, wherein the luminescent core is composed of one or more of a zinc-cadmium-selenium compound, an indium-phosphorus compound, a cadmium-selenium-tellurium compound, and an indium-arsenic compound, and wherein the inorganic protective shell is composed of one or more of a cadmium-sulfur compound, a zinc-selenium compound, a zinc-cadmium-sulfur compound, a zinc-sulfur compound, and a zinc-oxygen compound.
6. A quantum rod manufacturing method is characterized by comprising the following steps:
preparing a solution comprising a quantum rod body;
preparing a solution containing an electric field alignment substance precursor;
and mixing the solution containing the quantum rod main body with the solution containing the electric field alignment substance precursor, and reacting under illumination and/or heating conditions, wherein the electric field alignment substance precursor generates an electric field alignment substance on the surface of the quantum rod main body to obtain the quantum rod.
7. The method of fabricating a quantum rod according to claim 6, wherein the method of preparing the solution comprising the quantum rod body is:
preparing a first solution containing a cadmium-sulfur compound or/and a cadmium-selenium compound and a sulfur precursor;
preparing a second solution containing n-trioctylphosphine oxide, n-trioctylphosphine and phosphonic acid;
mixing the first solution and the second solution for reaction to generate a third solution containing the quantum rod main body;
separating the quantum rod bodies from the third solution;
and dispersing the quantum rod main body in a toluene solution to obtain the solution containing the quantum rod main body.
8. The method of claim 6, wherein the method of preparing the solution containing the electric field alignment precursor comprises:
and fully mixing p-dodecylamine or octadecylamine or trioctylamine with dodecyl dimethyl ammonium bromide and gold chloride in a toluene solution to obtain the solution containing the electric field alignment substance precursor.
9. The method according to claim 6, wherein the mixing reaction conditions of the solution containing the quantum rod main body and the solution containing the electric field alignment substance precursor are as follows:
temperature conditions: 0 to 40 degrees centigrade;
the illumination condition is as follows: laser irradiation, wavelength 473 nm, power 40 mw.
10. A liquid crystal display panel, comprising:
a backlight module;
a quantum rod film layer disposed on the light emitting surface of the backlight module, and including a substrate layer and quantum rods arranged on the substrate layer in an oriented manner, wherein the quantum rods are the quantum rods of any one of claims 1 to 5 or the quantum rods manufactured by the quantum rod manufacturing method of any one of claims 6 to 9;
and the liquid crystal panel is arranged on the quantum rod film layer.
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| CN202010461433.2A CN111592878A (en) | 2020-05-27 | 2020-05-27 | Quantum rod, manufacturing method thereof and liquid crystal display panel |
| PCT/CN2020/132869 WO2021238130A1 (en) | 2020-05-27 | 2020-11-30 | Quantum rod and manufacturing method therefor, and liquid crystal display panel |
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| WO2021238130A1 (en) * | 2020-05-27 | 2021-12-02 | Tcl华星光电技术有限公司 | Quantum rod and manufacturing method therefor, and liquid crystal display panel |
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| CN105511150A (en) * | 2016-02-01 | 2016-04-20 | 京东方科技集团股份有限公司 | Quantum bar, manufacturing method for quantum bar and display panel |
| CN210605295U (en) * | 2019-11-18 | 2020-05-22 | 昆山龙腾光电股份有限公司 | Liquid crystal display device |
| CN211264019U (en) * | 2020-01-17 | 2020-08-14 | 昆山龙腾光电股份有限公司 | Light modulation module and smart window |
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| KR102486405B1 (en) * | 2015-12-30 | 2023-01-09 | 엘지디스플레이 주식회사 | Quantum rod luminescent display device |
| KR102654773B1 (en) * | 2016-10-10 | 2024-04-04 | 엘지디스플레이 주식회사 | Quantum rod panel and Quantum rod display device |
| CN110358528A (en) * | 2018-04-10 | 2019-10-22 | 香港科技大学 | Manufacture the method with the quantum rod of controllable launch wavelength |
| CN111592878A (en) * | 2020-05-27 | 2020-08-28 | Tcl华星光电技术有限公司 | Quantum rod, manufacturing method thereof and liquid crystal display panel |
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| CN105511150A (en) * | 2016-02-01 | 2016-04-20 | 京东方科技集团股份有限公司 | Quantum bar, manufacturing method for quantum bar and display panel |
| CN210605295U (en) * | 2019-11-18 | 2020-05-22 | 昆山龙腾光电股份有限公司 | Liquid crystal display device |
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| WO2021238130A1 (en) * | 2020-05-27 | 2021-12-02 | Tcl华星光电技术有限公司 | Quantum rod and manufacturing method therefor, and liquid crystal display panel |
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