CN111308792A - Liquid crystal panel and manufacturing method thereof - Google Patents
Liquid crystal panel and manufacturing method thereof Download PDFInfo
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- CN111308792A CN111308792A CN202010128665.6A CN202010128665A CN111308792A CN 111308792 A CN111308792 A CN 111308792A CN 202010128665 A CN202010128665 A CN 202010128665A CN 111308792 A CN111308792 A CN 111308792A
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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
- 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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- 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
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
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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
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
- G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles
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- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the application discloses a manufacturing method of a liquid crystal panel and the liquid crystal panel. The manufacturing method of the liquid crystal panel comprises the steps that a first alignment film and a second alignment film are respectively formed on a first substrate and a second substrate, and the number of branched chains of the first alignment film is larger than that of branched chains of the second alignment film; disposing the first substrate provided with the first alignment film opposite to the second substrate provided with the second alignment film; forming a liquid crystal layer between the first alignment film and the second alignment film to obtain a liquid crystal panel, wherein the liquid crystal layer comprises liquid crystal molecules; applying a voltage to the first substrate and the second substrate to deflect the liquid crystal molecules; and irradiating the liquid crystal panel with ultraviolet light so that a first pretilt angle of the liquid crystal molecules on the first substrate side is larger than a second pretilt angle of the liquid crystal molecules on the second substrate side. The scheme can solve the problem that the liquid crystal panel has dark stripes, so that the brightness of the liquid crystal panel is uneven.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method for manufacturing a liquid crystal panel and a liquid crystal panel.
Background
The curved surface display is that the panel has the display equipment of radian, has promoted the broadness in user's visual experience, and the field of vision that the curved surface display gave people is wider, because the edge that slightly is crooked to the user can more press close to the user, realizes the same angle of vwatching basically with screen central point, and curved surface screen can let the people experience better sight shadow effect simultaneously.
Due to the influence of the curved surface, the array substrate and the color film substrate of the liquid crystal panel can be dislocated under the stress action, so that dark stripes appear on the liquid crystal panel, and the brightness of the liquid crystal panel is uneven.
Disclosure of Invention
The embodiment of the application provides a manufacturing method of a liquid crystal panel and the liquid crystal panel, which can solve the problem that the brightness of the liquid crystal panel is uneven due to dark stripes of the liquid crystal panel.
In a first aspect, an embodiment of the present application provides a method for manufacturing a liquid crystal panel, including:
forming a first alignment film and a second alignment film on the first substrate and the second substrate respectively, wherein the number of branched chains of the first alignment film is greater than that of branched chains of the second alignment film;
disposing the first substrate provided with the first alignment film opposite to the second substrate provided with the second alignment film;
forming a liquid crystal layer between the first alignment film and the second alignment film to obtain a liquid crystal panel, wherein the liquid crystal layer comprises liquid crystal molecules;
applying a voltage to the first substrate and the second substrate to deflect the liquid crystal molecules;
and irradiating the liquid crystal panel with ultraviolet light so that a first pretilt angle of the liquid crystal molecules on the first substrate side is larger than a second pretilt angle of the liquid crystal molecules on the second substrate side.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the forming a first alignment film and a second alignment film on the first substrate and the second substrate, respectively, includes:
respectively coating alignment liquid on the first substrate and the second substrate;
carrying out pre-curing treatment on the first substrate and the second substrate coated with the alignment liquid to form a first alignment material film layer and a second alignment material film layer;
and respectively carrying out curing treatment on the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the thickness of the first alignment material film layer is equal to the thickness of the second alignment material film layer.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the performing a curing process on the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film respectively includes:
carrying out first heating treatment on the first alignment material film layer to form a first alignment film;
and carrying out second heating treatment on the second alignment material film layer to form the second alignment film.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, performing a first heat treatment on the first alignment material film layer to form the first alignment film includes:
and placing the first alignment material film layer in an environment of 150-180 ℃ and baking for 30-40 minutes to form the first alignment film.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the performing a second heat treatment on the second alignment material film layer to form the second alignment film includes:
and placing the second alignment material film layer in an environment of 200-250 ℃ and baking for 60-120 minutes to form the second alignment film.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the respectively performing a curing process on the first alignment material film layer and the second alignment material film layer to form a first alignment film and a second alignment film includes:
performing third heating treatment on the first alignment material film layer and the second alignment material film layer to obtain a first alignment film and a second alignment material film layer after the third heating treatment is completed;
and carrying out ultraviolet irradiation on the second alignment material film layer subjected to the third heating treatment to form the second alignment film.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the thickness of the first alignment material film layer is greater than the thickness of the second alignment material film layer.
In the method for manufacturing a liquid crystal panel provided in the embodiment of the present application, the performing a curing process on the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film respectively includes:
and carrying out fourth heating treatment on the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film.
In a second aspect, an embodiment of the present application provides a liquid crystal panel, including:
the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein a first alignment film is arranged on the first substrate;
the second substrate is provided with a second alignment film, the second alignment film is opposite to the first alignment film, and the number of branched chains of the first alignment film is greater than that of branched chains of the second alignment film;
a liquid crystal layer disposed between the first alignment film and the second alignment film, the liquid crystal layer including liquid crystal molecules, a first pretilt angle of the liquid crystal molecules on the first substrate side being larger than a second pretilt angle of the liquid crystal molecules on the second substrate side.
According to the manufacturing method of the liquid crystal panel, the first alignment film and the second alignment film are respectively formed on the first substrate and the second substrate, and the number of branched chains of the first alignment film is larger than that of branched chains of the second alignment film; disposing the first substrate provided with the first alignment film opposite to the second substrate provided with the second alignment film; forming a liquid crystal layer between the first alignment film and the second alignment film to obtain a liquid crystal panel, wherein the liquid crystal layer comprises liquid crystal molecules; applying a voltage to the first substrate and the second substrate to deflect the liquid crystal molecules; and irradiating the liquid crystal panel with ultraviolet light so that a first pretilt angle of the liquid crystal molecules on the first substrate side is larger than a second pretilt angle of the liquid crystal molecules on the second substrate side. The scheme can solve the problem that the liquid crystal panel has dark stripes, so that the brightness of the liquid crystal panel is uneven.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for manufacturing a liquid crystal panel according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a liquid crystal panel provided in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a first substrate according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a second substrate provided in the embodiment of the present application.
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.
Embodiments of the present application provide a method of manufacturing a liquid crystal panel and a liquid crystal panel, which will be described in detail below.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for manufacturing a liquid crystal panel according to an embodiment of the present disclosure. The liquid crystal panel 100 shown in fig. 2 can be formed by this liquid crystal panel manufacturing method. The specific flow of the manufacturing method of the liquid crystal panel can be as follows:
101. a first alignment film 11 and a second alignment film 21 are formed on the first substrate 10 and the second substrate 20, respectively, and the number of branches of the first alignment film 11 is greater than the number of branches of the second alignment film 21.
The first substrate 10 may be a color filter substrate, and the second substrate 20 may be an array substrate.
Specifically, the alignment liquid may be coated on the first substrate 10 and the second substrate 20. Then, the first substrate 10 and the second substrate 20 coated with the alignment liquid are subjected to a pre-curing process to form a first alignment material film layer 12 and a second alignment material film layer 22, as shown in fig. 3 and 4. Finally, the first alignment material film layer 12 and the second alignment material film layer 22 are respectively cured to form the first alignment film 11 and the second alignment film 21. It is understood that the alignment liquid may be a Polyimide (PI) alignment liquid.
The pre-curing treatment may be to place the first substrate 10 and the second substrate 20 coated with the alignment liquid in an environment of 80-120 degrees celsius and bake for 2-5 minutes. It is understood that, during the pre-curing process, the solvent in the alignment liquid on the first substrate 10 and the second substrate 20 is volatilized, and the solute remains on the first substrate 10 and the second substrate 20 to form the first alignment material film layer 12 and the second alignment material film layer 22, respectively.
In the embodiment of the present application, different curing processes may be performed on the first alignment material film layer 12 and the second alignment material film layer 22 according to the thickness of the first alignment material film layer 12 and the second alignment material film layer 22 to form the first alignment film 11 and the second alignment film 21.
For example, when the thicknesses of the first alignment material film layer 12 and the second alignment material film layer 22 are the same, the first alignment material film layer 12 may be subjected to a first heat treatment to form the first alignment film 11; the second alignment material film layer 22 is subjected to a second heat treatment to form a second alignment film 21. The first heating process may be to bake the first alignment material film layer 12 at 150-180 degrees celsius for 30-40 minutes. The second heating process may be to bake the second alignment material film layer 22 at 200-250 degrees celsius for 60-120 minutes. At this time, since the second alignment material film layer 22 is baked for a longer time and at a higher temperature than the first alignment material film layer 11. Therefore, the PI branches in the second alignment material film layer 22 are baked at a higher temperature for a longer time. Therefore, the PI branches in the second alignment material film layer 22 are decomposed more. Resulting in the formation of a larger number of branches in the first alignment film 11 than in the second alignment film 21.
For example, when the thicknesses of the first alignment material film layer 12 and the second alignment material film layer 22 are the same, the third heat treatment may be performed on the first alignment material film layer 12 and the second alignment material film layer 22 to obtain the first alignment film 11 and the second alignment material film layer 22 after the third heat treatment. At this time, since the heating environment and the heating time of the first alignment material film layer 12 and the second alignment material film layer 22 are the same, the number of branches in the first alignment film 11 and the second alignment material film layer 22 after the third heating process is the same. The third heating process may be to bake the first alignment material film layer 12 and the second alignment material film layer 22 at 150-180 degrees celsius for 30-40 minutes.
In order to make the number of the branched chains in the second alignment film 21 smaller than the number of the branched chains in the first alignment film 11, the second alignment material film layer 22 after the third heat treatment may be subjected to ultraviolet irradiation, so as to form the second alignment film 21. It is understood that when the second alignment material film layer 22 after the third heat treatment is subjected to ultraviolet irradiation, the PI branched chains on the second alignment material film layer 22 after the third heat treatment are decomposed, so that the number of branched chains in the second alignment film 21 is smaller than that in the first alignment film 11. Wherein, the ultraviolet energy of the ultraviolet irradiation can be 80-120 mw/cm2The irradiation time may be 2 minutes to 10 minutes.
For example, when the thickness of the first alignment material film layer 12 is greater than the thickness of the second alignment material film layer 22, the first alignment material film layer 12 and the second alignment material film layer 22 may be subjected to the fourth heat treatment, so as to form the first alignment film 11 and the second alignment film 21. It is understood that, since the thickness of the first alignment material film layer 12 is greater than that of the second alignment material film layer 22, the number of PI branches in the first alignment material film layer 12 is greater than that of the second alignment material film layer 22. Therefore, under the same heating environment and heating time, the number of branches in the first alignment film 11 is formed to be greater than the number of branches in the second alignment film 21. It should be noted that, when the thickness of the first alignment material film 12 is greater than the thickness of the second alignment material film 22, the thickness of the first alignment material film 12 may be 100-120 nm, and the thickness of the second alignment material film 22 may be 50-70 nm.
It should be noted that in the description of the present application, the terms "first", "second", "third", etc. 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", "third" may explicitly or implicitly include one or more of the described features.
102. The first substrate 10 provided with the first alignment film 11 is disposed opposite to the second substrate 20 provided with the second alignment film 21.
It is understood that the first alignment film 11 is disposed opposite to the second alignment film 21.
103. A liquid crystal layer 30 is formed between the first alignment film 11 and the second alignment film 21, so as to obtain a liquid crystal panel 100, wherein the liquid crystal layer 30 includes liquid crystal molecules 31.
Specifically, the liquid crystal layer 30 may be formed by applying a sealant and a conductive paste material to the periphery of the first substrate 10 or the second substrate 20, and then dropping a liquid crystal mixed with an active monomer from the first substrate 10 side or the second substrate 20 side by a liquid crystal dropping process. Finally, the first substrate 10 and the second substrate 20 are bonded together in a vacuum environment, and the sealant is cured to obtain the liquid crystal panel 100. The liquid crystal layer 30 may include liquid crystal molecules 31.
104. A voltage is applied to the first substrate 10 and the second substrate 20 to deflect the liquid crystal molecules 31.
Specifically, a voltage of 10 to 25 volts may be applied to the first substrate 10 and the second substrate 20, so that the liquid crystal molecules 31 in the liquid crystal layer 30 are deflected. Since the number of the branched chains of the first alignment film 11 on the first substrate 10 side is greater than the number of the branched chains of the second alignment film 21 on the second substrate 20 side, the degree of deflection of the liquid crystal molecules 31 on the second alignment film 21 side is greater than the degree of deflection of the liquid crystal molecules 31 on the first alignment film 11 side.
105. The liquid crystal panel 100 is irradiated with ultraviolet light so that the first pretilt angle 32 of the liquid crystal molecules 31 on the first substrate 10 side is larger than the second pretilt angle 33 of the liquid crystal molecules 31 on the second substrate 20 side.
Specifically, under the irradiation of ultraviolet light, the active monomers in the liquid crystal layer 30 are polymerized on the surfaces of the first alignment film 11 on the first substrate 10 side and the second alignment film 21 on the second substrate 20 side, and polymers are formed on the surfaces of the first alignment film 11 and the second alignment film 21, respectively, so as to align the liquid crystal molecules 31 on the first alignment film 11 side and the liquid crystal molecules 32 on the second alignment film 21 side, so that the first pretilt angle 32 of the liquid crystal molecules 31 on the first substrate 10 side is greater than the second pretilt angle 33 of the liquid crystal molecules 31 on the second substrate 20 side.
When the liquid crystal panel 100 is a curved liquid crystal panel, the first substrate 10 and the second substrate 20 of the liquid crystal panel 100 are dislocated due to the influence of the curved surface, so that the liquid crystal molecules 31 are deformed or unevenly arranged, and dark stripes appear on the liquid crystal panel 100, thereby causing uneven brightness of the liquid crystal panel 100.
The second substrate 20 of the liquid crystal panel 100 is greatly affected by the curved surface, and thus the liquid crystal molecules 31 on the second substrate 20 side are greatly affected by the curved surface. Therefore, according to the method for manufacturing a liquid crystal panel provided by the embodiment of the present application, by making the first pretilt angle 32 of the liquid crystal molecules 31 on the first substrate 10 side larger than the second pretilt angle 33 of the liquid crystal molecules 31 on the second substrate 20 side, the influence of the curved surface on the liquid crystal molecules 31 on the second substrate 20 side can be reduced, thereby avoiding the occurrence of distortion or uneven alignment of the liquid crystal molecules 31. Therefore, the manufacturing method of the liquid crystal panel provided by the embodiment of the application can solve the problem that the brightness of the liquid crystal panel is not uniform due to dark stripes of the liquid crystal panel.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a liquid crystal panel according to an embodiment of the present disclosure. The liquid crystal panel 100 may include a first substrate 10, a second substrate 20, and a liquid crystal layer 30.
Wherein, a first alignment film 11 is disposed on the first substrate 10.
Wherein, a second alignment film 21 is disposed on the second substrate 20. The second alignment film 21 is disposed opposite to the first alignment film 11. The number of branches of the first alignment film 11 is greater than the number of branches of the second alignment film 21.
Here, the liquid crystal layer 30 may be disposed between the first alignment film 11 and the second alignment film 21. Note that the liquid crystal layer 30 may include liquid crystal molecules 31. The first pretilt angle 32 of the liquid crystal molecules 31 on the first substrate 10 side is larger than the second pretilt angle 33 of the liquid crystal molecules 32 on the second substrate 20 side.
In view of the above, in the liquid crystal panel 100 provided in the embodiment of the present application, by making the first pretilt angle 32 of the liquid crystal molecules 31 on the first substrate 10 side larger than the second pretilt angle 33 of the liquid crystal molecules 31 on the second substrate 20 side, the influence of the curved surface on the liquid crystal molecules 31 on the second substrate 20 side can be reduced, so that the liquid crystal molecules 31 are prevented from being deformed or unevenly arranged. Therefore, the manufacturing method of the liquid crystal panel provided by the embodiment of the application can solve the problem that the brightness of the liquid crystal panel is not uniform due to dark stripes of the liquid crystal panel.
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 above detailed description is provided for the manufacturing method of the liquid crystal panel and the liquid crystal panel provided in the embodiments of the present application, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiments is only used to help understanding the technical solution 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 method of manufacturing a liquid crystal panel, comprising:
forming a first alignment film and a second alignment film on the first substrate and the second substrate respectively, wherein the number of branched chains of the first alignment film is greater than that of branched chains of the second alignment film;
disposing the first substrate provided with the first alignment film opposite to the second substrate provided with the second alignment film;
forming a liquid crystal layer between the first alignment film and the second alignment film to obtain a liquid crystal panel, wherein the liquid crystal layer comprises liquid crystal molecules;
applying a voltage to the first substrate and the second substrate to deflect the liquid crystal molecules;
and irradiating the liquid crystal panel with ultraviolet light so that a first pretilt angle of the liquid crystal molecules on the first substrate side is larger than a second pretilt angle of the liquid crystal molecules on the second substrate side.
2. The method of manufacturing a liquid crystal panel according to claim 1, wherein the forming of the first alignment film and the second alignment film on the first substrate and the second substrate, respectively, comprises:
respectively coating alignment liquid on the first substrate and the second substrate;
carrying out pre-curing treatment on the first substrate and the second substrate coated with the alignment liquid to form a first alignment material film layer and a second alignment material film layer;
and respectively carrying out curing treatment on the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film.
3. The method according to claim 2, wherein a thickness of the first alignment material film layer is equal to a thickness of the second alignment material film layer.
4. The method according to claim 3, wherein the step of respectively curing the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film comprises:
carrying out first heating treatment on the first alignment material film layer to form a first alignment film;
and carrying out second heating treatment on the second alignment material film layer to form the second alignment film.
5. The method according to claim 4, wherein the forming the first alignment film by performing a first heat treatment on the first alignment material film layer comprises:
and placing the first alignment material film layer in an environment of 150-180 ℃ and baking for 30-40 minutes to form the first alignment film.
6. The method according to claim 4, wherein the performing a second heat treatment on the second alignment material film layer to form the second alignment film comprises:
and placing the second alignment material film layer in an environment of 200-250 ℃ and baking for 60-120 minutes to form the second alignment film.
7. The method according to claim 3, wherein the step of respectively curing the first alignment material film layer and the second alignment material film layer to form a first alignment film and a second alignment film comprises:
performing third heating treatment on the first alignment material film layer and the second alignment material film layer to obtain a first alignment film and a second alignment material film layer after the third heating treatment is completed;
and carrying out ultraviolet irradiation on the second alignment material film layer subjected to the third heating treatment to form the second alignment film.
8. The method according to claim 2, wherein a thickness of the first alignment material film layer is greater than a thickness of the second alignment material film layer.
9. The method according to claim 8, wherein the step of respectively curing the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film comprises:
and carrying out fourth heating treatment on the first alignment material film layer and the second alignment material film layer to form the first alignment film and the second alignment film.
10. A liquid crystal panel, comprising:
the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein a first alignment film is arranged on the first substrate;
the second substrate is provided with a second alignment film, the second alignment film is opposite to the first alignment film, and the number of branched chains of the first alignment film is greater than that of branched chains of the second alignment film;
a liquid crystal layer disposed between the first alignment film and the second alignment film, the liquid crystal layer including liquid crystal molecules, a first pretilt angle of the liquid crystal molecules on the first substrate side being larger than a second pretilt angle of the liquid crystal molecules on the second substrate side.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113359354A (en) * | 2021-05-20 | 2021-09-07 | 北海惠科光电技术有限公司 | Display panel and display device |
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