CN111258121A - Liquid crystal display panel and preparation method thereof - Google Patents
Liquid crystal display panel and preparation method thereof Download PDFInfo
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- CN111258121A CN111258121A CN202010128960.1A CN202010128960A CN111258121A CN 111258121 A CN111258121 A CN 111258121A CN 202010128960 A CN202010128960 A CN 202010128960A CN 111258121 A CN111258121 A CN 111258121A
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
- G02F1/133723—Polyimide, polyamide-imide
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- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Nanotechnology (AREA)
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Abstract
The application provides a liquid crystal display panel and a preparation method thereof, wherein the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer; a first alignment film is arranged on one side of the first substrate facing the second substrate, and a second alignment film is arranged on one side of the second substrate facing the first substrate; the materials of the first alignment film and the second alignment film both contain conductive nanoparticles. This application makes the insulating nature of joining in marriage to the membrane reduce through adding electrically conductive nano particle in the material of joining in marriage to the membrane to reduce the body resistance of joining in marriage to the membrane, the orientation membrane of low body resistance enables the liquid crystal molecule faster, less accumulation free ion, can make the liquid crystal molecule release free ion on the surface faster simultaneously, in order to reach the effect that improves liquid crystal display panel yields.
Description
Technical Field
The application relates to the technical field of display, in particular to a liquid crystal display panel and a preparation method thereof.
Background
In a thin film transistor liquid crystal display (TFT-LCD), alignment films coated on a color film substrate and an array substrate play a role in controlling the arrangement direction of liquid crystal molecules. Since the interface between the liquid crystal and the alignment film has a strong force, the liquid crystal molecules that have changed their alignment direction return to their original state against viscoelasticity when the external voltage is removed.
In general, an important criterion for evaluating the good or bad of the panel good product rate is dc residue, which is important to consider the accumulation and release of ions in the panel, and when the bulk impedance of the alignment film in the liquid crystal display panel is too high, the dc residue on the liquid crystal molecules is accumulated more and released slowly, thereby reducing the good product rate of the liquid crystal display panel.
Disclosure of Invention
The application provides a liquid crystal display panel and a preparation method thereof, which are used for reducing the bulk impedance of an alignment film, so that liquid crystal molecules can better release free ions on the surface, and the yield of the liquid crystal display panel is improved.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a liquid crystal display panel, includes:
the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate;
a first alignment film is arranged on one side of the first substrate facing the second substrate, and a second alignment film is arranged on one side of the second substrate facing the first substrate;
wherein the materials of the first alignment film and the second alignment film both contain conductive nanoparticles.
In the liquid crystal display panel of the present application, the conductive nanoparticles include γ -F2O3Nanoparticles.
In the liquid crystal display panel of the present application, the γ -F2O3The mass fraction of the nano particles in the first alignment film and the second alignment film is 0.05% -2%.
In the liquid crystal display panel of the present application, the material of the first alignment film and the second alignment film further includes a polyimide film, and the γ -F2O3The nano particles are positioned on the surface of the polyimide film.
In the liquid crystal display panel of the present application, the material of the first alignment film and the second alignment film further includes a polyimide film, and the γ -F2O3The nano particles are uniformly distributed in the polyimide film.
The application also provides a preparation method of the liquid crystal display panel, which is characterized by comprising the following steps:
preparing a first alignment film on a first substrate, and preparing a second alignment film on a second substrate, wherein the materials of the first alignment film and the second alignment film both contain conductive nanoparticles;
and injecting liquid crystal between the first alignment film and the second alignment film by adopting a liquid crystal injection process, and bonding by using frame glue.
In the method for manufacturing the liquid crystal display panel, the conductive nanoparticles comprise gamma-F2O3Nanoparticles.
The preparation method of the liquid crystal display panel comprises the following steps:
uniformly coating polyimide acid solutions on alignment liquid coating areas of the first substrate and the second substrate, and carrying out preheating treatment on the first substrate and the second substrate;
will contain gamma-F2O3And uniformly coating the oleic acid solution of the nanoparticles on alignment liquid coating areas of the first substrate and the second substrate, and carrying out heating treatment on the first substrate and the second substrate to form the first alignment film and the second alignment film.
The preparation method of the liquid crystal display panel comprises the following steps:
uniformly coating a mixed solution on the alignment liquid coating areas of the first substrate and the second substrate, wherein the mixed solution comprises a polyimide acid solution and a gamma-F-containing solution2O3Oleic acid solution of nanoparticles;
and carrying out preheating treatment on the first substrate and the second substrate to form the first alignment film and the second alignment film.
In the method for preparing a liquid crystal display panel, the method for preparing the oleic acid solution comprises the following steps:
FeCl is added3Solution and Mg (NO)3)2Adding the solution into a NaOH solution to obtain a first metal salt solution, and heating to obtain a first precipitate;
adding FeCl to the first precipitate2Stirring and heating the solution to obtain a second metal salt solution,generating a second precipitate after the second metal salt solution is cooled;
washing the second precipitate with acetone to obtain gamma-F2O3Nanoparticles;
subjecting said gamma-F to2O3Dissolving the nanoparticles into oleic acid to obtain the product containing the gamma-F2O3Oleic acid solution of nanoparticles.
Has the advantages that: this application makes the insulating nature of joining in marriage to the membrane reduce through adding electrically conductive nano particle in the material of joining in marriage to the membrane to reduce the body resistance of joining in marriage to the membrane, the orientation membrane of low body resistance enables the liquid crystal molecule faster, less accumulation free ion, can make the liquid crystal molecule release free ion on the surface faster simultaneously, in order to reach the effect that improves liquid crystal display panel yields.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a liquid crystal display panel according to a first embodiment of the present application;
fig. 2 is a schematic structural diagram of a liquid crystal display panel according to a second embodiment of the present application;
FIG. 3 is a flow chart of a method for fabricating a liquid crystal display panel according to the present application;
fig. 4 is a flowchart illustrating a method for manufacturing a first alignment film and a second alignment film in a liquid crystal display panel according to a first embodiment of the present disclosure;
fig. 5 is a flowchart of a method for manufacturing a first alignment film and a second alignment film in a liquid crystal display panel according to a second embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
In the prior art, the alignment film material is a polyimide material and is formed by thermal polymerization of anhydride and polyamine, generally, the alignment film is required to have the characteristics of uniformity, adherence, stability and insulation, and in the liquid crystal display panel, the bulk resistivity of the alignment film increases with the improvement of the insulation property of the alignment film, when the bulk resistivity of the alignment film is too high, the number of free ions accumulated on liquid crystal molecules increases, and meanwhile, the speed of the liquid crystal molecules releasing the free ions becomes slow, so that the yield of the liquid crystal display panel is reduced.
Referring to fig. 1 and 2, the liquid crystal display panel includes a first substrate 100 and a second substrate 200 disposed opposite to each other, and a liquid crystal layer 300 disposed between the first substrate 100 and the second substrate 200.
A first alignment film 400 is disposed on a side of the first substrate 100 facing the second substrate 200, and a second alignment film 500 is disposed on a side of the second substrate 200 facing the first substrate 100.
In the present application, the materials of the first alignment film 400 and the second alignment film 500 each contain conductive nanoparticles.
Referring to fig. 3, the present application further provides a process of a method for manufacturing a liquid crystal display panel, including the following steps:
step S10: a first alignment film 400 is prepared on a first substrate 100, a second alignment film 500 is prepared on a second substrate 200, and the materials of the first alignment film 400 and the second alignment film 500 both contain conductive nanoparticles.
Step S20: liquid crystal is injected between the first alignment film 400 and the second alignment film 500 by a liquid crystal injection process, and is bonded by the sealant 700.
In the preparation method of the present application, the conductive nanoparticles include gamma-F2O3Nanoparticles 600.
Further, the conductive nano particle is gamma-F2O3Nanoparticle 600, said gamma-F2O3The nanoparticles 600 have an effect of reducing the insulation characteristics of the first alignment film 400 and the second alignment film 500, and at the same time, can reduce the bulk resistance of the first alignment film 400 and the second alignment film 500.
The application contains the gamma-F2O3The first alignment film 400 and the second alignment film 500 of the nanoparticle 600 reduce the amount of free ions in the liquid crystal layer 300, thereby achieving the effect of faster accumulation of free ions by liquid crystal molecules, and the first alignment film 400 and the second alignment film 500 contain the γ -F that can reduce the insulation property of the alignment films2O3The nano particles 600, and therefore the bulk resistivity of the nano particles is low, and the first alignment film 400 and the second alignment film 500 with low bulk resistivity can enable liquid crystal molecules to accumulate free ions faster and less, and enable the liquid crystal molecules to release the free ions on the surface faster, so as to achieve the effect of improving the yield of the liquid crystal display panel.
The technical solution of the present application will now be described with reference to specific embodiments.
Implementation scheme one
Referring to fig. 1, a structural schematic diagram of a liquid crystal display panel according to a first embodiment of the present application is shown.
In this embodiment, the first substrate 100 is an array substrate.
The first substrate 100 includes a first substrate, and a thin film transistor layer, a planarization layer, and a pixel defining layer sequentially stacked on a side of the first substrate facing the second substrate 200.
In this embodiment, the second substrate 200 is a color filter substrate.
The color filter substrate 200 includes a second substrate and a color resist layer disposed on a side of the second substrate facing the first substrate 100.
The color resistance color of the color resistance layer may be one of red, green and blue, and the color resistance color of the color resistance layer is not limited herein.
In this embodiment, a first alignment film 400 is disposed on a side of the first substrate 100 facing the second substrate 200, and a second alignment film 500 is disposed on a side of the second substrate 200 facing the first substrate 100.
The materials of the first alignment film 400 and the second alignment film 500 both contain conductive nanoparticles.
In the embodiment, the conductive nanoparticles are gamma-F2O3Nanoparticles 600.
The gamma-F2O3The nanoparticle 600 is a conductive particle containing the gamma-F2O3The insulation properties of the first alignment film 400 and the second alignment film 500 of the nanoparticles 600 may be reduced, thereby reducing the bulk resistivity thereof.
In this embodiment, the γ -F2O3The nanoparticles 600 account for 0.05% -2% of the mass fraction of the first alignment film 400 and the second alignment film 500.
In this embodiment, the first substrate 100 and the second substrate 200 are connected by a sealant 700, and the sealant 700 is in contact with the edges of the first alignment film 400 and the second alignment film 500, but is not overlapped.
In this embodiment, the materials of the first alignment film 400 and the second alignment film 500 further include a polyimide film, and the γ -F2O3The nanoparticles 600 are located on the side of the polyimide film close to the liquid crystal layer 300.
Referring to fig. 4, in the present embodiment, a method for manufacturing a liquid crystal display panel includes:
step S11: polyimide acid solution is uniformly coated on the alignment solution coating areas of the first substrate 100 and the second substrate 200, and the first substrate 100 and the second substrate 200 are subjected to a preheating treatment.
In this embodiment, the temperature of the first substrate 100 and the second substrate 200 is 80 to 150 ℃, and the time of the preheating process is 2 to 5 min.
Further, the temperature of the first substrate 100 and the second substrate 200 is 120 ℃ during the preheating treatment, and the time of the preheating treatment is 4 min.
In this example, the polyimide acid solution was obtained by dissolving a dianhydride-based monomer and a diamine-based monomer in an organic solvent and reacting at room temperature for 24 hours.
In this embodiment, the molar ratio of the dianhydride monomer to the diamine monomer in the organic solvent is 1: 1.
In this embodiment, the organic solvent includes, but is not limited to, one or more of N-methylpyrrolidone, N-ethylpyrrolidine, γ -caprolactone, dimethyl sulfoxide, and methylene chloride.
Step S12: will contain gamma-F2O3The oleic acid solution of the nanoparticles 600 is uniformly applied to the alignment solution application regions of the first substrate 100 and the second substrate 200, and the first substrate 100 and the second substrate 200 are subjected to a heat treatment to form the first alignment film 400 and the second alignment film 500.
In this embodiment, the temperature of the first substrate 100 and the second substrate 200 during the heating process is 180 ℃ to 250 ℃, and the time of the heating process is 20min to 40 min.
In this embodiment, the method for preparing the oleic acid solution comprises:
step S121: FeCl is added3Solution and Mg (NO)3)2Adding the solution into a NaOH solution to obtain a first metal salt solution, and heating to obtain a first precipitate;
step S122, adding FeCl into the first precipitate2Stirring and heating the solution to obtain a second metal salt solution, and cooling the second metal salt solution to generate a second precipitate;
step S123, washing the second precipitate by acetone to obtain gamma-F2O3Nanoparticles;
step S124: subjecting said gamma-F to2O3Dissolving the nanoparticles into oleic acid to obtain the product containing the gamma-F2O3Oleic acid solution of nanoparticles.
In this example, FeCl was added3Dissolving in water to obtain FeCl with the molar solubility of 1mol/L3And (3) solution.
In this embodiment, the FeCl3The volume of the solution was 40 mL.
In this example, Mg (NO) is added3)2Dissolving in water and hydrochloric acid to obtain Mg (NO) with molar solubility of 2mol/0.05mol/L3)2And (3) solution.
In this example, the Mg (NO)3)2The volume of the solution was 10 mL.
In this example, the molar solubility of the NaOH solution was 0.7 mol/L.
In this example, the volume of the NaOH solution is 500 mL.
In this embodiment, the first metal salt solution has a pH of 10 to 12.
In this embodiment, the temperature of the first metal salt solution is 95-100 ℃, and when the first metal salt solution is heated to boiling, the boiling time is maintained for 4-6 min.
In this example, the first precipitate was separated from the first metal salt solution by HNO3And washing the first precipitate by using the solution, wherein the pH value of the washed first precipitate is 7-8.
In this example, the HNO3The molar solubility of the solution was 0.01 mol/L.
In this embodiment, the FeCl2The molar solubility of the solution was 0.25 mol/L.
In this embodiment, the FeCl2The volume of the solution was 400 mL.
In this embodiment, the γ -F2O3The mass of the nanoparticles 600 is 1g to 4 g.
In this example, the gamma-F-containing compound is included2O3The volume of the oleic acid solution of nanoparticles 600 was 50 mL.
In this embodiment, the temperature of the second metal salt solution is 95-100 ℃, and the time of the heating treatment is 25-35 min.
In this embodiment, the pH of the second metal salt solution after the heat treatment is 3 to 4.
It should be noted that, in the present embodiment, the FeCl is used3Solution of the Mg (NO)3)2Solution, the NaOH solution and the FeCl2Molar solubility and volume size of the solution, and the gamma-F2O3Nanoparticle 600 and the compositions containing gamma-F2O3The mass and volume of the oleic acid solution of nanoparticles 600 are for illustration only and are not limiting.
Step S13: liquid crystal is injected between the first alignment film 400 and the second alignment film 500 by a liquid crystal injection process, and is bonded by frame glue.
In this example, the gamma-F is contained2O3The first and second alignment films 400 and 500 of the nanoparticles have low insulation properties, resulting in low bulk resistivity, and in the liquid crystal display panel, the first and second alignment films 400 and 500 having low bulk resistivity may beThe liquid crystal display panel can better adsorb the free ions in the liquid crystal layer 300, so that the number of the free ions in the liquid crystal layer 300 is reduced, the effect that liquid crystal molecules can accumulate the free ions more quickly and less is achieved, and meanwhile, the body resistance of the first alignment film 400 and the second alignment film 500 is lower, so that the liquid crystal molecules can release the free ions on the surface more quickly, and the effect of improving the yield of the liquid crystal display panel is achieved.
Example two
Referring to fig. 2, in the present embodiment, the structure of the liquid crystal display panel is similar to/the same as that of the liquid crystal display panel of the first embodiment, and specifically, please refer to the description of the liquid crystal display panel of the first embodiment, which is not repeated herein, and the difference between the two embodiments is only:
in this embodiment, the materials of the first alignment film 400 and the second alignment film 500 further include a polyimide film, and the γ -F2O3The nanoparticles 600 are uniformly distributed in the polyimide film.
The gamma-F2O3The nanoparticles 600 are uniformly distributed in the first alignment film 400 and the second alignment film 500.
Referring to fig. 5, in the present embodiment, a method for manufacturing a liquid crystal display panel includes:
step S11: uniformly coating a mixed solution including a polyimide acid solution and a solution containing gamma-F on the alignment solution coating regions of the first and second substrates 100 and 2002O3Oleic acid solution of nanoparticles 600.
Step S12: the first substrate 100 and the second substrate 200 are subjected to a preheating process, and then the first substrate 100 and the second substrate 200 are subjected to a heating process to form the first alignment film 400 and the second alignment film 500.
Step S13: liquid crystal is injected between the first alignment film 400 and the second alignment film 500 by a liquid crystal injection process, and is bonded by frame glue.
In this embodiment, the polyimide is present in the mixed solutionThe acid solution has a mass of 500g and contains gamma-F2O3The volume of the oleic acid solution of nanoparticles 600 was 50 mL.
In this embodiment, the temperature of the first substrate 100 and the second substrate 200 is 80 ℃ to 150 ℃ during the preheating process, and the time of the preheating process is 2min to 5 min.
In this embodiment, the temperature of the first substrate 100 and the second substrate 200 is 180 ℃ to 250 ℃ during the heating process, and the time of the heating process is 20min to 40 min.
It is to be noted that, in the present example, the polyimide acid solution and the composition containing γ -F2O3The mass and volume of the oleic acid solution of nanoparticles 600 are for illustration only and are not limiting.
In this embodiment, the preparation methods of the polyimide acid solution and the oleic acid solution are the same as those in the first embodiment, and are not described herein again.
The application provides a liquid crystal display panel and a preparation method thereof, wherein the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer; a first alignment film is arranged on one side of the first substrate facing the second substrate, and a second alignment film is arranged on one side of the second substrate facing the first substrate; the materials of the first alignment film and the second alignment film both contain conductive nanoparticles.
In the present application, the gamma-F is contained2O3The insulating property of the first alignment film and the second alignment film of the nano particles is low, so that the body resistance of the nano particles is low, in the liquid crystal display panel, the body resistance of the first alignment film and the second alignment film is low, the first alignment film and the second alignment film can better adsorb free ions in the liquid crystal layer, the number of the free ions in the liquid crystal layer is reduced, the effect that liquid crystal molecules can accumulate the free ions more quickly and less is achieved, and meanwhile, the body resistance of the first alignment film and the second alignment film is low, so that the liquid crystal molecules can release the free ions on the surface more quickly, and the effect of improving the yield of the liquid crystal display panel is achieved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The liquid crystal display panel and the method for manufacturing the same provided by the embodiment of the present application are described in detail above, and the principle and the implementation manner of the present application are explained by applying specific examples herein, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A liquid crystal display panel, comprising:
the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate;
a first alignment film is arranged on one side of the first substrate facing the second substrate, and a second alignment film is arranged on one side of the second substrate facing the first substrate;
wherein the materials of the first alignment film and the second alignment film both contain conductive nanoparticles.
2. The liquid crystal display panel of claim 1, wherein the conductive nanoparticles comprise γ -F2O3Nanoparticles.
3. The liquid crystal display panel of claim 2, wherein the γ -F is2O3The mass fraction of the nano particles in the first alignment film and the second alignment film is 0.05% -2%.
4. The liquid crystal display panel according to claim 3, wherein the first electrode is a first electrode and the second electrode is a second electrodeThe materials of the alignment film and the second alignment film further comprise a polyimide film, and the gamma-F2O3The nano particles are positioned on the surface of the polyimide film.
5. The liquid crystal display panel according to claim 3, wherein the material of the first alignment film and the second alignment film further comprises a polyimide film, and wherein γ -F is selected from the group consisting of2O3The nano particles are uniformly distributed in the polyimide film.
6. The preparation method of the liquid crystal display panel is characterized by comprising the following steps:
preparing a first alignment film on a first substrate, and preparing a second alignment film on a second substrate, wherein the materials of the first alignment film and the second alignment film both contain conductive nanoparticles;
and injecting liquid crystal between the first alignment film and the second alignment film by adopting a liquid crystal injection process, and bonding by using frame glue.
7. The method of claim 6, wherein the conductive nanoparticles comprise γ -F2O3Nanoparticles.
8. The method of claim 6, comprising:
uniformly coating polyimide acid solutions on alignment liquid coating areas of the first substrate and the second substrate, and carrying out preheating treatment on the first substrate and the second substrate;
will contain gamma-F2O3And uniformly coating the oleic acid solution of the nanoparticles on alignment liquid coating areas of the first substrate and the second substrate, and carrying out heating treatment on the first substrate and the second substrate to form the first alignment film and the second alignment film.
9. The method of claim 6, comprising:
uniformly coating a mixed solution on the alignment liquid coating areas of the first substrate and the second substrate, wherein the mixed solution comprises a polyimide acid solution and a gamma-F-containing solution2O3Oleic acid solution of nanoparticles;
and carrying out preheating treatment on the first substrate and the second substrate to form the first alignment film and the second alignment film.
10. The method of claim 8 or 9, wherein the oleic acid solution is prepared by a method comprising:
FeCl is added3Solution and Mg (NO)3)2Adding the solution into a NaOH solution to obtain a first metal salt solution, and heating to obtain a first precipitate;
adding FeCl to the first precipitate2Stirring and heating the solution to obtain a second metal salt solution, and cooling the second metal salt solution to generate a second precipitate;
washing the second precipitate with acetone to obtain gamma-F2O3Nanoparticles;
subjecting said gamma-F to2O3Dissolving the nanoparticles into oleic acid to obtain the product containing the gamma-F2O3Oleic acid solution of nanoparticles.
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| CN202010128960.1A CN111258121A (en) | 2020-02-28 | 2020-02-28 | Liquid crystal display panel and preparation method thereof |
| PCT/CN2020/080740 WO2021168951A1 (en) | 2020-02-28 | 2020-03-23 | Liquid crystal display panel and producing method therefor |
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|---|---|---|---|---|
| CN103645586A (en) * | 2013-12-12 | 2014-03-19 | 京东方科技集团股份有限公司 | Liquid crystal display panel, manufacturing method of liquid crystal display panel and display device |
| CN105316006A (en) * | 2014-07-30 | 2016-02-10 | 达兴材料股份有限公司 | Liquid crystal alignment agent, liquid crystal alignment film, liquid crystal display element and preparation method of liquid crystal alignment agent |
| CN106383422A (en) * | 2015-08-05 | 2017-02-08 | 立景光电股份有限公司 | Liquid crystal display panel and manufacture method thereof |
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| CA2913602A1 (en) * | 2013-05-30 | 2014-12-04 | The University Of Akron | A continuous roll-to-roll process design for vertical alignment of particles using electric field |
| US20170045768A1 (en) * | 2015-08-11 | 2017-02-16 | Himax Display, Inc. | Liquid crystal display panel and method of fabricating the same |
| KR20180070262A (en) * | 2016-12-16 | 2018-06-26 | 엘지디스플레이 주식회사 | Substrate, Liquid Crystal Display Device Including The Same And Method Of Fabricating The Same |
| JP2018205543A (en) * | 2017-06-05 | 2018-12-27 | 株式会社ジャパンディスプレイ | Liquid crystal display |
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| CN103645586A (en) * | 2013-12-12 | 2014-03-19 | 京东方科技集团股份有限公司 | Liquid crystal display panel, manufacturing method of liquid crystal display panel and display device |
| CN105316006A (en) * | 2014-07-30 | 2016-02-10 | 达兴材料股份有限公司 | Liquid crystal alignment agent, liquid crystal alignment film, liquid crystal display element and preparation method of liquid crystal alignment agent |
| CN106383422A (en) * | 2015-08-05 | 2017-02-08 | 立景光电股份有限公司 | Liquid crystal display panel and manufacture method thereof |
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