CN114935855A - Display panel, display panel preparation method and display device - Google Patents
Display panel, display panel preparation method and display device Download PDFInfo
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- CN114935855A CN114935855A CN202210573650.XA CN202210573650A CN114935855A CN 114935855 A CN114935855 A CN 114935855A CN 202210573650 A CN202210573650 A CN 202210573650A CN 114935855 A CN114935855 A CN 114935855A
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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
- G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
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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
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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
- G02F1/133757—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 alignment orientations
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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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- 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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- Spectroscopy & Molecular Physics (AREA)
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Abstract
The application discloses a display panel, a display panel preparation method and a display device. Display panel includes array substrate, various rete and locates the liquid crystal box between array substrate and the various rete, and array substrate includes the pixel that the array set up, and the liquid crystal box includes: the alignment film is arranged between the array substrate and the color film layer; the liquid crystal layer is arranged on the alignment film and comprises liquid crystal modules which are in one-to-one correspondence with the pixels arranged in the array, the liquid crystal modules comprise liquid crystal sub-regions which are in one-to-one correspondence with the multi-domain sub-pixel regions of the pixels, the liquid crystal sub-regions at least comprise first liquid crystals and second liquid crystals, and the first deflection state of the first liquid crystals is different from the second deflection state of the second liquid crystals. According to the liquid crystal display panel, at least two kinds of liquid crystals with different deflection states are arranged in the corresponding liquid crystal sub-area of the single sub-pixel area in each pixel, and one sub-pixel area contains the liquid crystals with different pretilt angles, so that the panel visual angle is further improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a display panel preparation method and a display device.
Background
For the Vertically Aligned (VA) display mode, the viewing angle is relatively poor because it is vertically aligned itself. In production, in order to obtain a higher resolution display screen such as 8K or 16K products, the number of data lines and gate lines thereof is increased sharply, and in order to ensure the transmittance of the display screen, the 4-domain design is mostly used and the 8-domain design is rarely used, resulting in the poor viewing angle of the high resolution display screen. In the UV light alignment (UV2A), the high molecules in the photo-alignment film are initially randomly aligned, and alignment is performed by applying linear UV light to form a pretilt angle, thereby improving the viewing angle, but the pretilt angle and the deflection direction of the liquid crystal in each domain are substantially the same for the 4-domain design, which limits the improvement of the viewing angle of the panel.
Disclosure of Invention
The embodiment of the application provides a display panel, a display panel preparation method and a display device, for an individual sub-pixel area in each pixel, at least two kinds of liquid crystals with different deflection states are arranged in a corresponding liquid crystal sub-area, and one sub-pixel area contains the liquid crystals with different pretilt angles, so that the panel visual angle is further improved.
In a first aspect, an embodiment of the present application provides a display panel, including an array substrate, a color film layer, and a liquid crystal cell disposed between the array substrate and the color film layer, where the array substrate includes pixels arranged in an array, and the liquid crystal cell includes:
the alignment film is arranged between the array substrate and the color film layer;
the liquid crystal layer is arranged on the alignment film, the liquid crystal layer comprises liquid crystal modules in one-to-one correspondence with the pixels arranged in the array, the liquid crystal modules comprise liquid crystal sub-regions in one-to-one correspondence with multi-domain sub-pixel regions of the pixels, the liquid crystal sub-regions at least comprise first liquid crystals and second liquid crystals, and first deflection states of the first liquid crystals and second deflection states of the second liquid crystals are different.
In some embodiments, the first deflection state comprises a first deflection direction and a first pretilt angle, and the second deflection state comprises a second deflection direction and a second pretilt angle;
the first deflection direction and the second deflection direction are different; and/or the presence of a gas in the atmosphere,
the first and second pretilt angles are different.
In some embodiments, the first state of deflection of the first type of liquid crystal is the same for different liquid crystal sub-regions and the second state of deflection of the second type of liquid crystal is the same for different liquid crystal sub-regions.
In some embodiments, the distribution area of the first type of liquid crystal of the adjacent liquid crystal sub-regions is symmetrical with respect to the interface of the adjacent liquid crystal sub-regions, and the distribution area of the second type of liquid crystal of the adjacent liquid crystal sub-regions is symmetrical with respect to the interface of the adjacent liquid crystal sub-regions.
In some embodiments, the liquid crystal cell further includes another alignment film disposed opposite the alignment film, and the liquid crystal layer is disposed between the alignment film and the other alignment film.
In some embodiments, the alignment film includes a first alignment region corresponding to the first type of liquid crystal and a second alignment region corresponding to the second type of liquid crystal.
In a second aspect, the present application provides a method for manufacturing a display panel, which is applied to manufacture the display panel described in any one of the above paragraphs, including:
providing an array substrate;
arranging an alignment film on the array substrate;
disposing a liquid crystal layer on the alignment film;
irradiating the alignment film and the liquid crystal layer by using polarized light through each photomask in a photomask combination in sequence, deflecting liquid crystal in the liquid crystal layer into different deflection states, and irradiating the liquid crystal layer by using the polarized light in different polarization directions correspondingly and respectively through each photomask in the photomask combination;
and arranging a color film layer on the liquid crystal layer to obtain the display panel.
In some embodiments, the photo-mask assembly at least includes a first photo-mask and a second photo-mask, the first polarized light corresponds to the first photo-mask, the second polarized light corresponds to the second photo-mask, the irradiating the alignment film and the liquid crystal layer through each photo-mask in the photo-mask assembly by using the polarized light in sequence, the deflecting the liquid crystal in the liquid crystal layer to different deflection states, including:
irradiating the alignment film and the liquid crystal layer by the first polarized light through a first light-transmitting area of the first photomask, and deflecting part of the liquid crystal into first-class liquid crystal;
irradiating the alignment film and the liquid crystal layer by the second polarized light through a second light-transmitting area of the second photomask, and deflecting part of the liquid crystal into second liquid crystal; the single liquid crystal subarea of the liquid crystal layer contains the first liquid crystal and the second liquid crystal, the deflection states of the first liquid crystal and the second liquid crystal are different, and each liquid crystal subarea corresponds to the multi-domain sub-pixel area of the pixel one by one.
In some embodiments, the light-transmissive regions of each mask in the mask set are different from each other.
In a third aspect, the present application provides a display device comprising the display panel of any one of the above.
According to the display panel, the display panel preparation method and the display device provided by the embodiment of the application, in the multi-domain design pixel, at least two kinds of liquid crystals with different deflection states are arranged in the liquid crystal sub-area corresponding to each sub-pixel area, namely, one sub-pixel area contains liquid crystals with various different pretilt angles and deflection directions, on the premise that the number of the sub-pixel areas contained in each pixel is not changed, the deflection state of the liquid crystal in each pixel is increased, and the panel visual angle is further improved.
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 display panel according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a 4-domain sub-pixel region design according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a liquid crystal cell according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a liquid crystal distribution of a liquid crystal module with a 4-domain sub-pixel area design and including two types of liquid crystals according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a liquid crystal distribution of a liquid crystal module with a 4-domain sub-pixel area design and containing two types of liquid crystals according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram illustrating a liquid crystal distribution of a liquid crystal module with a 4-domain sub-pixel region design and including two types of liquid crystals according to an embodiment of the present disclosure;
FIG. 7 is a schematic flow chart illustrating a method for fabricating a display panel according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of the first and second masks according to an embodiment of the present disclosure;
FIG. 9 is a schematic diagram illustrating alignment of a liquid crystal layer by a first polarized light and a first mask according to an embodiment of the present disclosure;
FIG. 10 is a schematic view of the liquid crystal layer aligned by the second polarized light and the second mask after the alignment of FIG. 9;
fig. 11 is a schematic view of the distribution of liquid crystals after alignment in fig. 9 and 10.
Reference numerals:
1. an array substrate; 2. a liquid crystal cell; 21. an alignment film; 22. a liquid crystal layer; 221. a first type of liquid crystal; 222. a second type of liquid crystal; 3. a color film layer; 4. a first mask; 5. a second mask.
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 the application of other processes and/or the use of other materials.
Referring to fig. 1, an embodiment of the present disclosure provides a display panel, where the display panel includes an array substrate 1, a color film layer 3, and a liquid crystal cell 2 disposed between the array substrate 1 and the color film layer 3, where the array substrate 1 includes pixels arranged in an array, each pixel includes a multi-domain sub-pixel region, as shown in fig. 2, a 4-domain design pixel is provided, that is, one pixel includes 4 sub-pixel regions (a region 01, a region 02, a region 03, and a region 04), and the number of sub-pixel regions divided by each pixel is not specifically limited in this embodiment. The color film layer 3 is a CF (color Filter) color film.
As shown in fig. 3, the liquid crystal cell 2 includes an alignment film 21 and a liquid crystal layer 22 disposed on the alignment film 21, wherein one side of the liquid crystal cell 2 close to the alignment film 21 may be disposed between the array substrate 1 and the color film layer 3 and close to the array substrate 1, or disposed between the array substrate 1 and the color film layer 3 and close to the color film layer 3, that is, the entire display panel may be disposed in the order of the array substrate 1, the alignment film 21, the liquid crystal layer 22 and the color film layer 3, or the array substrate 1, the liquid crystal layer 22, the alignment film 21 and the color film layer 3.
The liquid crystal layer 22 includes a plurality of liquid crystal modules (not shown in the figure), each of the liquid crystal modules corresponds to a corresponding pixel in an array one-to-one manner, and the liquid crystal in each of the liquid crystal modules is used for adjusting the light of the corresponding pixel. In addition, since each pixel includes a multi-domain sub-pixel region, the liquid crystal module corresponding to the pixel is set as a plurality of liquid crystal sub-regions (not shown in the figure), each liquid crystal sub-region corresponds to a sub-pixel region one to one, that is, the liquid crystal of each liquid crystal sub-region is used for adjusting the light of the corresponding sub-pixel region.
The liquid crystal sub-regions include at least a first type liquid crystal 221 and a second type liquid crystal 222, and a first deflection state of the first type liquid crystal 221 and a second deflection state of the second type liquid crystal 222 are different, that is, the liquid crystal sub-regions include at least two types of liquid crystals having different deflection states. The present embodiment is not particularly limited to the division of the regions of the first-type liquid crystal 221 and the second-type liquid crystal 222.
A liquid crystal module includes 4 liquid crystal sub-regions and liquid crystals in two deflection states, that is, liquid crystals in two deflection states are distributed in each sub-pixel region in the 4-domain sub-pixel region shown in fig. 2, one of the distribution conditions is shown in fig. 4, first-type liquid crystals 221 are correspondingly distributed in a middle circular region, and second-type liquid crystals 222 are correspondingly distributed in the remaining regions except the circular region. Alternatively, as shown in fig. 5, the middle rectangular region is distributed with the first type liquid crystal 221, and the remaining regions except the middle rectangular region are distributed with the second type liquid crystal 222. Or, a certain liquid crystal module includes 4 liquid crystal sub-regions and two liquid crystals in a deflected state, and the other distribution is as shown in fig. 6, the first-type liquid crystal 221 is correspondingly distributed in the middle small rectangular region, and the second-type liquid crystal 222 is correspondingly distributed except for the middle small rectangular region, that is, the corresponding region of the first-type liquid crystal 221 in each liquid crystal sub-region may also be included by the corresponding region of the second-type liquid crystal 222, that is, the first-type liquid crystals 221 in the adjacent liquid crystal sub-regions are independent from each other and do not contact each other. In order to make the interfaces of the different types of liquid crystals uniform and transition, the cross section of the interface of the different types of liquid crystals should be a smooth curve as much as possible.
In this embodiment, for the individual sub-pixel regions in each pixel, at least two kinds of liquid crystals with different deflection states are arranged in the corresponding liquid crystal sub-regions, and the viewing angle of the panel can be further improved compared with the case where the liquid crystals in the same liquid crystal sub-region are all set to the same deflection state.
In an embodiment, the deflected state of the liquid crystal comprises a deflected direction and a deflected angle, i.e. the first deflected state comprises a first deflected direction and a first pretilt angle and the second deflected state comprises a second deflected direction and a second pretilt angle. However, the initial states of the first-type liquid crystal 221 and the second-type liquid crystal 222 are the same before alignment is performed on the first-type liquid crystal 221 and the second-type liquid crystal 222, and therefore, the reference objects of the first-type liquid crystal 221 and the second-type liquid crystal 222 are the same with respect to the initial direction of the liquid crystals, and the specific reference object is not limited. For example, for a homeotropically aligned liquid crystal, if the liquid crystal molecules in the initial state without alignment are vertically aligned with respect to the substrate surface, the deflected state is the deflection direction and the deflection angle of the long axis of the liquid crystal molecules with respect to the initial state.
The liquid crystal sub-area is provided with a plurality of liquid crystal sub-areas, wherein the liquid crystal sub-areas are different in deflection state, the different deflection states affect different visual angles, and the deflection direction and the deflection angle can affect the visual angles, so that either the deflection direction or the deflection angle can be different, or the deflection direction and the deflection angle can be different.
It should be noted that if only the deflection directions are different, but the deflection angles are the same, i.e. the pretilt angles are the same, the brightness is consistent under the same voltage, and the brightness of the panel is improved.
In one embodiment, the liquid crystal compositions of different liquid crystal sub-regions included in the same liquid crystal module are the same, that is, the different liquid crystal sub-regions included in the same liquid crystal module at least include the first type liquid crystal 221 and the second type liquid crystal 222, the first deflection states of the first type liquid crystal 221 of the different liquid crystal sub-regions are the same, the second deflection states of the second type liquid crystal 222 of the different liquid crystal sub-regions are the same, that is, the first deflection direction and the first pretilt angle of the first type liquid crystal 221 of the different liquid crystal sub-regions are the same, the second deflection direction and the second pretilt angle of the second type liquid crystal 222 of the different liquid crystal sub-regions are the same, the liquid crystal states of the different liquid crystal sub-regions included in the same liquid crystal module are the same, the final viewing angle is the same, and the display effect is better.
In one embodiment, the liquid crystal distribution conditions of different types of different liquid crystal sub-regions included in the same liquid crystal module are the same, the distribution regions of the first type of liquid crystal 221 of the adjacent liquid crystal sub-regions in the same liquid crystal module are symmetrical about the boundary plane of the adjacent liquid crystal sub-regions, the distribution regions of the second type of liquid crystal 222 of the adjacent liquid crystal sub-regions are symmetrical about the boundary plane of the adjacent liquid crystal sub-regions, and the distribution regions of the second type of liquid crystal 222 of the adjacent liquid crystal sub-regions are symmetrical about the boundary plane of the adjacent liquid crystal sub-regions, so that the deflection angles of the liquid crystals in different directions are close, and the viewing angle of the panel is improved.
The liquid crystal distribution areas of the same type in different liquid crystal sub-areas in each liquid crystal module are communicated with each other, and are respectively an integral body, as shown in fig. 4 or fig. 5, the areas of the first type liquid crystal 221 in each liquid crystal sub-area are communicated with each other. Alternatively, at least some types of liquid crystal distribution regions of different liquid crystal sub-regions in each liquid crystal module do not communicate with each other and are divided independently, and as shown in fig. 6, the regions of the first type of liquid crystal 221 of each liquid crystal sub-region do not communicate with each other.
In one embodiment, the liquid crystal cell 2 further includes another alignment film (not shown) disposed opposite to the alignment film 21, and the liquid crystal layer 22 is disposed between the alignment film 21 and the another alignment film, i.e., the alignment film 21 is disposed between the array substrate 1 and the color film layer 3 and the liquid crystal layer 22, so that the liquid crystal alignment is more precise and the panel viewing angle is better.
In one embodiment, since the alignment of the polymer alignment film 21 in the corresponding region is completed by linearly polarized ultraviolet light, and then the liquid crystal molecules are driven to form a fixed pretilt angle, the liquid crystal layer 22 at least includes the first type of liquid crystal 221 and the second type of liquid crystal 222, the alignment film 21 at least includes the first alignment region and the second alignment region, the first alignment region corresponds to the first type of liquid crystal 221, the second alignment region corresponds to the second type of liquid crystal 222, that is, the liquid crystal in the liquid crystal layer 22 corresponding to the first alignment region of the alignment film 21 is deflected into the first type of liquid crystal 221, and the liquid crystal in the liquid crystal layer 22 corresponding to the second alignment region of the alignment film 21 is deflected into the second type of liquid crystal 222.
In the embodiment, the liquid crystal in multiple deflection states is arranged in a single liquid crystal subarea by changing the arrangement state of the pretilt angle of the liquid crystal, namely, the liquid crystal containing multiple visual angles in a single domain is realized, so that different visual angle optimization is realized.
Referring to fig. 1 to 7, an embodiment of the present disclosure provides a method for manufacturing a display panel, including:
s101, providing an array substrate 1;
s102, arranging an alignment film 21 on the array substrate 1;
s103, arranging a liquid crystal layer 22 on the alignment film 21;
s104, irradiating the alignment film 21 and the liquid crystal layer 22 by using polarized light through each photomask in a photomask combination in sequence, deflecting liquid crystals in the liquid crystal layer 22 into different deflection states, and irradiating the photomasks in the photomask combination by using polarized light in different polarization directions correspondingly;
and S105, arranging a color film layer 3 on the liquid crystal layer 22 to obtain the display panel.
Specifically, an array substrate 1 is provided, an alignment film 21 is disposed on the array substrate 1, and a liquid crystal layer 22 is disposed on the alignment film 21. The array substrate 1 includes a glass substrate and an electrode layer (ITO, ITO layer) disposed on the glass substrate, and the alignment film 21 is disposed on the electrode layer. It should be noted that the preparation order of the alignment film 21 and the liquid crystal layer 22 may be exchanged, and this embodiment is not particularly limited.
The array substrate 1 includes pixels arranged in an array, each pixel includes a multi-domain sub-pixel region, such as a 4-domain design pixel shown in fig. 2, that is, one pixel includes 4 sub-pixel regions (region 01, region 02, region 03, and region 04).
The liquid crystal layer 22 includes a plurality of liquid crystal modules, each of the liquid crystal modules corresponds to a corresponding one of the pixels in the array, and the liquid crystal in each of the liquid crystal modules is used to adjust the light of the corresponding pixel. In addition, each pixel comprises a multi-domain sub-pixel region, the liquid crystal module corresponding to the pixel is set into a plurality of liquid crystal sub-regions, each liquid crystal sub-region corresponds to the sub-pixel region one by one, namely, the liquid crystal of each liquid crystal sub-region is used for adjusting the light of the corresponding sub-pixel region. The alignment method of the liquid crystal in the corresponding region of each pixel is the same, and the following description will be made with respect to the liquid crystal alignment method in the liquid crystal module corresponding to a certain pixel, that is, the mask set is the mask set corresponding to the liquid crystal in the liquid crystal module corresponding to a certain pixel.
The liquid crystal sub-region includes at least a first type liquid crystal 221 and a second type liquid crystal 222, and a first deflection state of the first type liquid crystal 221 and a second deflection state of the second type liquid crystal 222 are different. The alignment film 21 and the liquid crystal layer 22 are irradiated with polarized light through each mask of the mask set in sequence, and the liquid crystal in the liquid crystal module is deflected to different deflection states. The number of the light shades in the light shade combination is the same as the number of the liquid crystal types contained in the liquid crystal subareas, the liquid crystal types contained in different liquid crystal subareas in the same liquid crystal module are the same, each light shade corresponds to one type of liquid crystal, and the initial state liquid crystal is deflected into the liquid crystal of each category by sequentially using the light shades in the light shade combination.
The deflection state of the liquid crystal depends on the polarization direction of the used deflection light, and because the deflection state of the liquid crystal obtained by each photomask alignment is different, each photomask in the photomask combination is irradiated by the polarization light with different polarization directions correspondingly.
And arranging the color film layer 3 on the liquid crystal layer 22 to obtain the display panel. It should be noted that another alignment film may be disposed between the liquid crystal layer 22 and the color film layer 3.
In one embodiment, the photo-mask assembly at least includes a first photo-mask and a second photo-mask, the first polarized light corresponds to the first photo-mask, the second polarized light corresponds to the second photo-mask, the step S104 sequentially uses the polarized light to irradiate the alignment film 21 and the liquid crystal layer 22 through the photo-masks in the photo-mask assembly, and the liquid crystal in the liquid crystal layer 22 is deflected to different deflection states, including:
s201, irradiating the alignment film 21 and the liquid crystal layer 22 with the first polarized light through a first light-transmitting region of the first mask, and deflecting a portion of the liquid crystal into a first type of liquid crystal 221;
s202, irradiating the alignment film 21 and the liquid crystal layer 22 with the second polarized light through a second light-transmitting region of the second mask, and deflecting a part of the liquid crystal into a second type of liquid crystal 222; the liquid crystal layer 22 includes the first type liquid crystal 221 and the second type liquid crystal 222 in a single liquid crystal sub-region, the first type liquid crystal 221 and the second type liquid crystal 222 are different in deflection state, and each liquid crystal sub-region corresponds to a multi-domain sub-pixel region of a pixel one by one.
Specifically, the liquid crystal sub-region includes at least a first type of liquid crystal 221 and a second type of liquid crystal 222, and correspondingly, the mask assembly includes at least a first mask and a second mask, the first polarized light corresponds to the first mask, and the second polarized light corresponds to the second mask. The first polarized light and the first photomask are used for aligning the first type of liquid crystal 221, the second polarized light and the second photomask are used for aligning the second type of liquid crystal 222, and the first polarized light and the second polarized light respectively enable the liquid crystal to reach different deflection states.
The light-transmitting areas of the photomasks in the photomask combination are different from each other, and the light-transmitting areas of the photomasks correspond to the distribution areas of the aligned corresponding types of the put-in liquid crystal. The alignment film 21 and the liquid crystal layer 22 are irradiated with the first polarized light through the first light-transmitting area of the first mask, and a portion of the liquid crystal corresponding to the first light-transmitting area is deflected into the first type liquid crystal 221. The alignment film 21 and the liquid crystal layer 22 are irradiated with the second polarized light through the second light-transmitting area of the second mask, and a portion of the liquid crystal corresponding to the second light-transmitting area is deflected into the second type liquid crystal 222.
For example, when the liquid crystal sub-regions include the first type liquid crystal 221 and the second type liquid crystal 222, and each sub-pixel region in the 4-domain sub-pixel region shown in fig. 2 has two types of liquid crystals in a deflected state, the liquid crystal distribution is as shown in fig. 3, the first type liquid crystal 221 is correspondingly distributed in the middle circular region, the second type liquid crystal 222 is correspondingly distributed in the remaining regions except the circular region, and the corresponding first photomask and the second photomask have the contour shapes as shown in fig. 8, wherein the first light-transmitting region of the first photomask is the circular region of the inner ring, the annular region of the outer ring is the light-transmitting region, the second light-transmitting region of the second photomask is the annular region of the outer ring, and the circular region of the inner ring is the light-transmitting region, wherein in order to avoid missing liquid crystals during alignment, the area of the circular outer contour is larger than the area of the entire liquid crystal module, and therefore the shape of the outer contour is not limited to a circle. The light-transmitting area of each mask in the mask assembly is determined based on the distribution of different types of liquid crystal in each liquid crystal sub-area in the liquid crystal module, and can be freely set as needed.
As shown in fig. 9, the alignment film 21 and the liquid crystal layer 22 are first irradiated with the first polarized light through the first mask 4, the first polarized light can only pass through the first light-transmitting area on the left side of the first mask 4, and the corresponding portion of the liquid crystal is deflected into the first type liquid crystal 221, the first polarized light cannot pass through the non-light-transmitting area (shaded area in fig. 9) on the right side of the first mask 4, and the corresponding portion of the liquid crystal does not change. Then, as shown in fig. 10, the alignment film 21 and the liquid crystal layer 22 are irradiated with the second polarized light through the second photo-mask 5, the second polarized light can pass through only the first ear light-transmitting region on the right side of the second photo-mask 5, and the corresponding portion of the liquid crystal is deflected into the second type of liquid crystal 222, and the second polarized light cannot pass through the non-light-transmitting region (the shaded portion in fig. 10) on the left side of the second photo-mask 5, and the liquid crystal of the corresponding portion does not change. If the liquid crystal module is designed for 4-domain sub-pixels, a liquid crystal module with liquid crystal distribution as shown in fig. 11 is finally obtained, wherein the first type liquid crystal 221 and the second type liquid crystal 222 are distributed at the boundary position of the two types of liquid crystals as shown in fig. 11, and when a person looks from all directions, the deflection angles of the liquid crystals are close, so that the visual angle of the panel is improved.
In addition, in order to avoid the alignment of all the liquid crystals in the liquid crystal layer 22, the total of the light-transmitting areas of the masks in the mask combination is equal to or greater than the total of the multi-domain sub-pixel areas of the pixel.
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.
An embodiment of the present application provides a display device, which includes the display panel described in any one of the above embodiments.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The display panel, the display panel manufacturing method and the display device provided in the embodiments of the present application are described in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A display panel comprises an array substrate, a color film layer and a liquid crystal box arranged between the array substrate and the color film layer, wherein the array substrate comprises pixels arranged in an array manner, and the liquid crystal box comprises:
the alignment film is arranged between the array substrate and the color film layer;
the liquid crystal layer is arranged on the alignment film and comprises liquid crystal modules in one-to-one correspondence with the pixels arranged in the array, the liquid crystal modules comprise liquid crystal sub-regions in one-to-one correspondence with multi-domain sub-pixel regions of the pixels, the liquid crystal sub-regions at least comprise first liquid crystals and second liquid crystals, and first deflection states of the first liquid crystals are different from second deflection states of the second liquid crystals.
2. The display panel according to claim 1, wherein the first deflection state comprises a first deflection direction and a first pretilt angle, and the second deflection state comprises a second deflection direction and a second pretilt angle;
the first deflection direction and the second deflection direction are different; and/or the presence of a gas in the gas,
the first and second pretilt angles are different.
3. The display panel of claim 1, wherein the first deflection state of the first type of liquid crystal is the same for different liquid crystal sub-regions and the second deflection state of the second type of liquid crystal is the same for different liquid crystal sub-regions.
4. The display panel according to claim 1, wherein the distribution region of the first type of liquid crystal of the adjacent liquid crystal sub-regions is symmetrical with respect to the boundary surface of the adjacent liquid crystal sub-regions, and the distribution region of the second type of liquid crystal of the adjacent liquid crystal sub-regions is symmetrical with respect to the boundary surface of the adjacent liquid crystal sub-regions.
5. The display panel of claim 1, wherein the liquid crystal cell further comprises another alignment film disposed opposite the alignment film, and the liquid crystal layer is disposed between the alignment film and the other alignment film.
6. The display panel according to claim 1 or 5, wherein the alignment film includes a first alignment region corresponding to the first type of liquid crystal and a second alignment region corresponding to the second type of liquid crystal.
7. A method for manufacturing a display panel, which is applied to manufacture the display panel of any one of claims 1 to 6, comprising:
providing an array substrate;
arranging an alignment film on the array substrate;
disposing a liquid crystal layer on the alignment film;
sequentially irradiating the alignment film and the liquid crystal layer by using polarized light through each photomask in a photomask combination, deflecting liquid crystals in the liquid crystal layer into different deflection states, and irradiating the photomasks in the photomask combination by using the polarized light in different polarization directions correspondingly;
and arranging a color film layer on the liquid crystal layer to obtain the display panel.
8. The method for preparing a display panel according to claim 7, wherein the mask assembly comprises at least a first mask and a second mask, a first polarized light corresponds to the first mask, a second polarized light corresponds to the second mask, the alignment film and the liquid crystal layer are irradiated by polarized light through the masks in the mask assembly in sequence, and liquid crystal in the liquid crystal layer is deflected to different deflection states, comprising:
irradiating the alignment film and the liquid crystal layer by the first polarized light through a first light-transmitting area of the first photomask, and deflecting part of the liquid crystal into first-class liquid crystal;
irradiating the alignment film and the liquid crystal layer by the second polarized light through a second light-transmitting area of the second photomask, and deflecting part of the liquid crystal into second liquid crystal; the single liquid crystal subarea of the liquid crystal layer contains the first liquid crystal and the second liquid crystal, the deflection states of the first liquid crystal and the second liquid crystal are different, and each liquid crystal subarea corresponds to the multi-domain sub-pixel area of the pixel one by one.
9. The method according to claim 8, wherein the light-transmissive regions of the masks in the mask set are different from each other.
10. A display device characterized in that it comprises a display panel according to any one of claims 1 to 6.
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