CN105954937B - Display panel and preparation method thereof, display device - Google Patents
Display panel and preparation method thereof, display device Download PDFInfo
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- CN105954937B CN105954937B CN201610550951.5A CN201610550951A CN105954937B CN 105954937 B CN105954937 B CN 105954937B CN 201610550951 A CN201610550951 A CN 201610550951A CN 105954937 B CN105954937 B CN 105954937B
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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
-
- 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
-
- 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
-
- 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
Abstract
The present invention provides a kind of display panel, comprising: array substrate, to box substrate and positioned at the array substrate and the liquid crystal layer between box substrate；The liquid crystal layer includes: nematic liquid crystal and the polymer network that is formed by polymerisable liquid crystal monomer；One of end face of the liquid crystal layer is incidence surface；Oriented layer is provided on the array substrate and the opposite face to box substrate；The oriented layer includes multiple first orientation areas, and multiple first orientation areas are along the direction arrangement for being gradually distance from the incidence surface；Angle between the differently- oriented directivity and default differently- oriented directivity in the first orientation area of at least one oriented layer increases with the first orientation area to the increase of the incidence surface distance.Correspondingly, the present invention also provides a kind of production methods of display panel and a kind of display device.The present invention can be improved the uniformity of display.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of display panel and preparation method thereof, display device.
Background technique
With the development of technology, transparence display gradually steps into people's lives, and has attracted the concern of consumer.However,
The transmitance of traditional transparent display (such as liquid crystal display device, organic electroluminescent diode display device) is lower, and
Response speed is slower.And most of transparence displays are that transparent state is only just presented when applying voltage, are usually opaque state.
In the recent period, in research discovery based on polymer stabilized nematic liquid crystals (Polymer Stabilized Liquid Crystal,
When PSLC) being used for transparence display, transparency, response speed, energy conservation etc. are with the obvious advantage.The display surface of this display device
Plate itself can both do light guiding plate, while can also be shown, can be referred to as waveguide and show.It is this to be based on polymer stabilizing
The structure of the display device of liquid crystal as illustrated in figs. 1A and ib, array substrate 10 and is provided with liquid crystal layer between box substrate 20
30, liquid crystal layer 30 includes nematic liquid crystal 31 and the polymer network 32 formed by polymerizable liquid crystal monomer.Light source 70 is from aobvious
Show that a side of panel emits light to liquid crystal layer 30 and do not apply voltage on display panel, light is in liquid crystal when no display is desired
Pellucidity is presented in horizontal conductive (as shown in Figure 1a) in layer 30, display panel, and transparency can reach 90% or more；It is aobvious when needing
When showing, apply voltage so that nematic liquid crystal 31 deflects, and is influenced by polymer network 32, nematic to display panel
Phase liquid crystal 31 is orientated confusion, to scatter light, realizes display (as shown in Figure 1 b).It is compared with traditional transparent display,
The transmitance of this display device based on polymer stabilized nematic liquid crystals is higher, and response speed block.
But in the display device of this structure, as pixel region is to the increase of 70 distance of light source, as shown in Figure 1 b,
The light imported in display panel gradually decreases, and the light that pixel region can scatter also is reduced therewith, causes display panel brightness equal
One property is poor.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, propose a kind of display panel and its
Production method, display device, to improve the uniformity of display panel brightness.
In order to solve the above-mentioned technical problem one of, the present invention provides a kind of display panel, comprising: array substrate, to box base
Plate and positioned at the array substrate and the liquid crystal layer between box substrate；The liquid crystal layer include: nematic liquid crystal and
The polymer network formed by polymerisable liquid crystal monomer；One of end face of the liquid crystal layer is incidence surface；The array base
Oriented layer is provided on plate and the opposite face to box substrate；The oriented layer includes multiple first orientation areas, Duo Gesuo
First orientation area is stated along the direction arrangement for being gradually distance from the incidence surface；The orientation side in the first orientation area of at least one oriented layer
Increase to the angle between default differently- oriented directivity with the first orientation area to the increase of the incidence surface distance.
Preferably, the angle between the differently- oriented directivity in the first orientation area of each oriented layer and the default differently- oriented directivity is equal
Increase with the first orientation area to the increase of the incidence surface distance.
Preferably, the array substrate includes multiple pixel regions, and multiple pixel regions line up multiple lines and multiple rows, every row pixel region edge
The direction for being gradually distance from the incidence surface extends, multiple first orientation areas of the oriented layer and the multiple row picture of the array substrate
Plain area corresponds.
Preferably, it is formed with spacer region between the two column pixel region of arbitrary neighborhood of the array substrate, the oriented layer is also
Including with the one-to-one second orientation area of the spacer region,
In each oriented layer, the differently- oriented directivity in multiple second orientation areas is identical；Alternatively,
In at least one oriented layer, between the differently- oriented directivity in any one second orientation area and the default differently- oriented directivity
Angle is in the folder between the differently- oriented directivity and the default differently- oriented directivity in the Liang Ge first orientation area of the second orientation area two sides
Between angle.
Preferably, the differently- oriented directivity of same position is identical in two oriented layer.
Preferably, the default differently- oriented directivity is parallel to the display surface of the display panel, alternatively, the default orientation side
To the display surface perpendicular to the display panel.
Preferably, when the default differently- oriented directivity is parallel to the display surface of the display panel, the incidence surface is institute
State the end face parallel with the default differently- oriented directivity of liquid crystal layer；When the default differently- oriented directivity is perpendicular to the display panel
When display surface, the incidence surface is any one end face of the liquid crystal layer.
The material for being preferably made from the oriented layer includes polyimides；When the default differently- oriented directivity is perpendicular to described
When the display surface of display panel, hydrocarbon side or fluorocarbon side chains are had on the main chain of the polyimides.
Preferably, the difference of the angle between the differently- oriented directivity in any two first orientation area and the default differently- oriented directivity
Less than 30 °.
Preferably, the mass percent of polymer network described in the liquid crystal layer is between 2%~6%.
Preferably, the thickness of the liquid crystal layer is between 3~5 μm.
Correspondingly, the present invention also provides a kind of production methods of above-mentioned display panel, comprising:
There is provided array substrate and to box substrate；
In array substrate and to being respectively set on box substrate to orientation film layer, described to orientation film layer includes multiple first taking
To area；
It is orientated respectively to described in two to orientation film layer, to form two oriented layer；
The array substrate of oriented layer will be formed with and to box substrate to box, and filling liquid crystal mixture between, institute
Stating liquid crystal compound includes nematic liquid crystal and polymerisable liquid crystal monomer；
The liquid crystal compound is solidified, so that the polymerisable liquid crystal monomer forms polymer network；After solidification
Liquid crystal compound be formed as liquid crystal layer, one of end face of the liquid crystal layer is incidence surface；
Wherein, multiple first orientation areas wait taking along the direction arrangement for being gradually distance from the incidence surface at least one
When being orientated to film layer, the angle between the differently- oriented directivity in first orientation area and default differently- oriented directivity is with the first orientation area
To the incidence surface distance increase and increase.
Preferably, it in the step of orientation described in two to orientation film layer, is orientated using the method for light orientation.
Correspondingly, the present invention also provides a kind of display device, including light source and above-mentioned display panel provided by the invention, institutes
The incidence surface for stating light source and the liquid crystal layer is oppositely arranged, to emit light into the liquid crystal layer from the incidence surface.
In the present invention, the angle in oriented layer between the differently- oriented directivity of different zones and default differently- oriented directivity is also different,
Remoter apart from light source, the angle between differently- oriented directivity and default differently- oriented directivity is bigger, so that the nematic phase liquid of corresponding region
Brilliant pre-tilt angle is bigger, therefore, when different zones apply identical electric field in display panel, apart from incidence surface closer location
The inclination angle of nematic liquid crystal is smaller, and the amount light that can be scattered is less；And the inclination apart from the farther away nematic liquid crystal of incidence surface
Angle is larger, and under voltage driving, inclination angle is further increased, can the amount light at the place of scattering increase with it.Compared to the prior art,
The light projected apart from the closer region of incidence surface is less, so that light losing is less；It can apart from the farther away region of incidence surface
The light of acquisition is more, and the light that can be scattered is also more, so that apart from incidence surface is closer or the display in farther away region is bright
Spend uniformity that is close, and then improving display panel display brightness.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 a is status diagram when a kind of display device in the prior art is in transparent state；
Fig. 1 b is that display device in Fig. 1 a is used for status diagram when showing；
Fig. 2 is the first structural schematic diagram of display panel provided by the invention；
Fig. 3 be include status diagram when the display device of display panel of Fig. 2 is in transparent state；
Fig. 4 be include that the display device of display panel of Fig. 2 is used for status diagram when showing；
Fig. 5 is second of structural schematic diagram of display panel provided by the invention；
Fig. 6 is the third structural schematic diagram of display panel provided by the invention；
Fig. 7 is the 4th kind of structural schematic diagram of display panel provided by the invention；
Fig. 8 is the 5th kind of structural schematic diagram of display panel provided by the invention；
Fig. 9 is the production method flow chart of display panel provided by the invention.
Wherein, appended drawing reference are as follows:
10, array substrate；11, pixel region；12, spacer region；20, to box substrate；30, liquid crystal layer；31, nematic liquid crystal；
32, polymer network；40, oriented layer；41, first orientation area；42, second orientation area；50, pixel electrode；60, public electrode；
70, light source.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As an aspect of of the present present invention, a kind of display panel is provided, the first structure such as Fig. 2 of the display panel extremely schemes
Shown in 4, comprising: array substrate 10, to box substrate 20 and positioned at array substrate 10 and to the liquid crystal layer 30 between box substrate 20.
Liquid crystal layer 30 includes: nematic liquid crystal 31 and the polymer network 32 that is formed by polymerisable liquid crystal monomer.The polymerisable liquid crystal
Monomer is specifically as follows the liquid crystal monomer of photopolymerization, e.g., the liquid crystal monomer containing vinyl.One of end of liquid crystal layer 30
Face is incidence surface.Array substrate 10 and to being provided with oriented layer 40 on the opposite face of box substrate 20.Wherein, oriented layer 40 includes
Multiple first orientation areas 41, multiple first orientation areas 41 are arranged along the direction for being gradually distance from the incidence surface.At least one orientation
Angle between the differently- oriented directivity and default differently- oriented directivity in the first orientation area 41 of floor 40 enters light with first orientation area 41 described in
Identity distance from increase and increase.That is, differently- oriented directivity and default orientation in the first orientation area 41 remoter apart from the incidence surface
Angle between direction is bigger；Differently- oriented directivity and default differently- oriented directivity in the first orientation area 41 closer apart from the incidence surface
Between angle it is smaller.
It is understood that oriented layer 40 can make neighbouring nematic liquid crystal 31 keep special in the absence of an electric field
Fixed orientation, to form certain pre-tilt angle.The differently- oriented directivity of oriented layer 40 and the angle of display panel thickness direction, i.e. nematic
Phase liquid crystal 31 is under no electric field conditions, the angle of long axis direction and display panel thickness direction.
Display panel provided by the invention is particularly suitable for transparent display, to reach higher transmitance.In addition, this
Invention is not construed as limiting the type of display panel, for example, the display panel can be electrically controlled birefringence mode (Electrically
Controlled Birefringence, ECB) display panel or vertical orientating type (Vertical Alignment, VA) type be aobvious
Show panel.Specifically, as shown in Figures 2 to 4, pixel electrode 50 is provided in array substrate 10, to being arranged on box substrate 20
There is public electrode 60 to form electric field therebetween after applying voltage on pixel electrode 50 and public electrode 60.Certainly, display surface
Plate may be coplanar switching mode (In Plane Switching, IPS) display panel or fringe field switching type (Fringe
Field Switching, FFS) display panel, at this point, pixel electrode 50 and public electrode 60 are arranged in array substrate 10.
The display panel of above-mentioned several types is the common display panel in this field, and specific structure is not be described in detail herein.Institute
Stating default differently- oriented directivity can determine according to the concrete type of display panel, for example, for electric birefringence type display panel, coplanar
For switching mode display panel, fringe field switching type display panel, needing to make the liquid crystal in liquid crystal layer 30 integrally is in horizontal alignment
Mode, at this moment, the default differently- oriented directivity is to be parallel to the horizontal direction of display panel display surface, as in Fig. 2 X-direction or
Y-direction；For vertical orientating type display panel, need to make the mode of the whole perpendicular orientation of liquid crystal in liquid crystal layer 30,
At this moment, as shown in Figure 6 to 8, display surface (that is, Z-direction) of the default differently- oriented directivity perpendicular to the display panel.
It should be noted that the incidence surface of liquid crystal layer 30 refers to, and in the display device for including the display panel, liquid crystal
Layer 30 is towards the end face of light source 70.As shown in figure 3, light source 70 emits light, and light into liquid crystal layer 30 from the incidence surface
The horizontal conductive in liquid crystal layer 30.It is described to be considered as the distance of light source 70 " to the distance of incidence surface ", apart from incidence surface compared with
Far, i.e., apart from light source 70 farther out.
In the prior art, the differently- oriented directivity of different location is consistent in oriented layer 40, so that different location in liquid crystal layer
The pre-tilt angle of nematic liquid crystal 31 is identical, therefore, in the case where electric field is generated in display panel, when the incident ray of equivalent enters
When being mapped to the nematic liquid crystal 31 of different zones, the amount light scattered is also identical；And due to the region remoter apart from incidence surface,
Incident amount light is fewer, and therefore, the region remoter apart from incidence surface, the amount light scattered is fewer, to cause to show bright
Degree is uneven.And in the present invention, the first orientation area 41 remoter apart from incidence surface in oriented layer 40, differently- oriented directivity is preset with described
The angle of differently- oriented directivity is bigger, so that the pre-tilt angle of the nematic liquid crystal 31 remoter apart from incidence surface is bigger, therefore, when aobvious
When showing in panel that different zones apply identical electric field, the inclination angle of the nematic liquid crystal 31 apart from incidence surface closer location compared with
Small, the amount light that can be scattered is less；And the inclination angle apart from the farther away nematic liquid crystal 31 of incidence surface is larger, drives in voltage
Under, inclination angle further increases, can the amount light at the place of scattering increase with it.Compared to the prior art, closer apart from incidence surface
The light that region is projected is less, so that light losing is less；The light obtained by the farther away region of incidence surface is more, and can
The light scattered is also more, so that apart from incidence surface is closer or the display brightness in farther away region is close (as shown in Figure 4),
So that improving the uniform of display brightness based on the display panel of polymer stabilized nematic liquid crystals while reaching compared with high transmittance
Property.
Preferably, the angle between the differently- oriented directivity and default differently- oriented directivity in the first orientation area 41 of each oriented layer 40 is equal
Increase with first orientation area 41 to the increase of the incidence surface distance, so that the first orientation remoter apart from the incidence surface
In region where area 41, more nematic liquid crystals 31 obtain biggish pre-tilt angle, to guarantee that the region compared with distant positions can
Scatter more light.
In the present invention, as shown in Fig. 2 to Fig. 8, array substrate 10 includes multiple pixel regions 11, and multiple pixel regions are lined up more
Row multiple row, every row pixel region 11 extend along the direction for being gradually distance from the incidence surface, that is, the direction for being parallel to incidence surface is column side
To the direction perpendicular to incidence surface is line direction.It should be noted that so-called pixel region 11 is to refer to independently show one kind
The region of particular color, e.g., red pixel area, green pixel area, blue pixel area.Array substrate 10 further include a plurality of grid line and
Multiple data lines, a plurality of grid line and multiple data lines intersect, to limit multiple pixel regions 11.The present invention takes to first
It is not especially limited to the area size in area 41, first orientation area 41 can correspond to one or more columns per page pixel region 11.To make
It is more uniform to state the light distribution that display panel scatters, it is preferable that as shown in Fig. 2 to Fig. 8, multiple the first of oriented layer 40 are taken
It is corresponded to the multiple row pixel region 11 of area 41 and array substrate 10.
Further, as shown in Fig. 2 to Fig. 8, between being formed between the two column pixel region 11 of arbitrary neighborhood of array substrate 10
Septal area 12, oriented layer 40 include and the one-to-one second orientation area 42 of spacer region 12.The present invention takes to second orientation area 42
Be not construed as limiting to direction, the first set-up mode of the differently- oriented directivity in second orientation area 42 as illustrated in fig 2 and fig, each
In oriented layer 40, the differently- oriented directivity in multiple second orientation areas 42 is identical；The differently- oriented directivity in second orientation area 42 can also according to
Lower second of set-up mode setting: as shown in Fig. 5, Fig. 7 and Fig. 8, at least one oriented layer 40, any one second orientation area
Angle between 42 differently- oriented directivity and the default differently- oriented directivity is in two first orientations of 42 two sides of second orientation area
Between angle between the differently- oriented directivity in area 41 and the default differently- oriented directivity.For example, one of spacer region 12 it is corresponding to
The pre-tilt angle of column phase liquid crystal 31 is α 1, adjacent with the spacer region 12 and close to the corresponding nematic phase of a column pixel region 11 of incidence surface
The pre-tilt angle of liquid crystal 31 is α 2, nematic phase liquid corresponding to adjacent with a spacer region 12 and column pixel region 11 far from incidence surface
The pre-tilt angle of crystalline substance 31 is α 3, then 2 < α of α, 1 < α 3.It should be noted that in second of set-up mode, second orientation area 42 and
The differently- oriented directivity of one oriented region 41 can be identical or opposite, that is, the direction of the corresponding nematic liquid crystal 31 of spacer region 12 can be with
The corresponding nematic liquid crystal 31 of pixel region may be reversed (as shown in Figure 8) towards identical (as shown in Figure 7).
Further, the differently- oriented directivity of same position is identical in two oriented layer 40, so that same row pixel region 11
Corresponding nematic liquid crystal 31 it is equally oriented, the corresponding nematic liquid crystal 31 in same interval area 12 it is equally oriented, thus more
Be conducive to the conduction and scattering of light in the liquid crystal layer.
As described above, the preset direction can be parallel to the display surface of the display panel, can also be perpendicular to institute
State the display surface of display panel.Due to working as display surface in the case where the differently- oriented directivity of liquid crystal is vertical with the conduction orientation of light
When generating electric field in plate, the amount light scattered is more, it is preferable that and the default differently- oriented directivity is parallel with the incidence surface, from
And make when the light of light source 70 injects liquid crystal layer 30 from incidence surface, conduction orientation and liquid crystal of the light in liquid crystal layer 30
Differently- oriented directivity is vertical.Specifically, when the preset direction is parallel to the display surface of the display panel, the incidence surface is liquid
The end face parallel with the default differently- oriented directivity of crystal layer 30；When the default differently- oriented directivity is perpendicular to the aobvious of the display panel
When showing face, the incidence surface is any one end face of liquid crystal layer 30.The end face parallel with the preset direction is formed as described
Incidence surface.For example, when being X-direction, incidence surface is 30 left or right side of liquid crystal layer when the preset direction is as shown in Figures 2 to 5
End face；When the default differently- oriented directivity is as shown in Figure 6 to 8, when being Z-direction, the incidence surface is any of liquid crystal layer 30
One end face.
In the present invention, the material that oriented layer 40 is made includes polyimides.Wherein, when the default differently- oriented directivity is vertical
When the display surface of the display panel, that is, when vertically oriented, in order to be preferably orientated to oriented layer 40, it is preferable that institute
It states on the main chain of polyimides with hydrocarbon side or fluorocarbon side chains.
In view of when the pre-tilt angle apart from the farther away nematic liquid crystal 31 of incidence surface and apart from the closer nematic phase of incidence surface
When the pre-tilt angle of liquid crystal 31 has big difference, the uniformity of light is equally influenced whether out.Occur this phenomenon in order to prevent, any two
The difference of angle between the differently- oriented directivity in a first orientation area 41 and the default differently- oriented directivity is less than 30 °.That is, distance enters
The nematic phase liquid of the nematic liquid crystal 31 of the nearest column pixel region 11 of smooth surface and a column pixel region 11 farthest apart from incidence surface
The difference of the pre-tilt angle of crystalline substance 31 is less than 30 °.
When 32 proportion of polymer network in liquid crystal layer 30 is too small, the scattering of light is unobvious；When liquid crystal layer 30
In 32 proportion of polymer network it is larger when, be affected to the deflection of nematic liquid crystal 31, cause driving voltage it is excessively high,
Power consumption is larger.Based on above-mentioned consideration, it is preferable that the mass percent of polymer network 32 is between 2%~6% in liquid crystal layer 30
(in filling liquid crystal, the range of the mass percent of the polymerisable liquid crystal monomer in liquid crystal layer 30 is between 2%~6%), from
And while guaranteeing that display panel has preferable dispersion effect, moreover it is possible to driving voltage be effectively reduced.
Going out it should also be noted that, in order to guarantee that light can conduct forward in liquid crystal layer 30, and when scattering light
Light quantity is big, it is preferable that and two kinds of liquid crystal preferably use the material that property is close, compatibility is good in liquid crystal layer 30, and every kind of liquid crystal
D-value of dielectric constant is larger.In addition, array substrate 10 and be usually glass to the substrate of box substrate 20, at this moment, 50 He of pixel electrode
The refractive index of public electrode 60 should be greater than the refractive index of glass, for example, it includes oxygen that pixel electrode 50 and public electrode 60, which is made,
Change indium tin (ITO), so that light is totally reflected in array substrate 10 and opposite face to box substrate 20 as far as possible, prevents
Light projects display panel.
In addition, causing driving voltage larger when 30 thickness of liquid crystal layer of display panel is larger；When the thickness of liquid crystal layer 30
When smaller, conducting effect of the light in liquid crystal layer 30 is poor；Therefore, the thickness of the liquid crystal layer 30 of the display panel in the present invention
It can be selected between 3~10 μm, thus while guaranteeing that display panel can play the role of preferable optical waveguide, moreover it is possible to reduce and drive
Dynamic voltage.
As another aspect of the present invention, a kind of production method of above-mentioned display panel is provided, as shown in figure 9, the system
Include: as method
S1, array substrate is provided and to box substrate.
S2, in array substrate and to being respectively set on box substrate to orientation film layer, it is described to orientation film layer to include and pixel
One-to-one first orientation area of area.
S3, it is orientated respectively to described in two to orientation film layer, to form two oriented layer.
S4, the array substrate of oriented layer will be formed with and to box substrate to box, and filling liquid crystal mixture between,
The liquid crystal compound includes nematic liquid crystal and polymerisable liquid crystal monomer.Wherein, the polymerisable liquid crystal monomer is in the liquid
Mass percent in brilliant mixture is preferably between 2%~6%.
S5, the liquid crystal compound is solidified, so that the polymerisable liquid crystal monomer forms polymer network；Solidification
Liquid crystal compound afterwards is formed as liquid crystal layer, and one of end face of the liquid crystal layer is incidence surface.
Wherein, multiple first orientation areas are along the direction arrangement for being gradually distance from the incidence surface；To at least in step S3
One when orientation film layer is orientated, the angle between the differently- oriented directivity in first orientation area and default differently- oriented directivity is with described
One oriented region to the incidence surface distance increase and increase.
It is higher to the required precision of orientation when the width in first orientation area is smaller, in order to improve orientation precision, step S3
In, it is orientated using the method for light orientation.
As the third aspect of the invention, a kind of display device, including light source and above-mentioned display panel, such as Fig. 3 are provided
With shown in Fig. 4, the incidence surface of light source 70 and liquid crystal layer 30 is oppositely arranged, to emit light into liquid crystal layer 30 from the incidence surface
Line.
By above description as can be seen that in the present invention, the differently- oriented directivity of different zones is orientated with default in oriented layer
Angle between direction is also different, remoter apart from light source, and the angle between differently- oriented directivity and default differently- oriented directivity is bigger, to make
The pre-tilt angle for obtaining the nematic liquid crystal of corresponding region is bigger, therefore, when different zones apply identical electric field in display panel,
The inclination angle of nematic liquid crystal apart from incidence surface closer location is smaller, and the amount light that can be scattered is less；And apart from incidence surface compared with
The inclination angle of remote nematic liquid crystal is larger, and under voltage driving, inclination angle is further increased, and can scatter the amount light at place therewith
Increase.Compared to the prior art, the light projected apart from the closer region of incidence surface is less, so that light losing is less；Away from
It is more from light obtained by the farther away region of incidence surface, and the light that can be scattered is also more, so that closer apart from incidence surface
Or the display brightness in farther away region is close, and then improves the uniformity of display panel display brightness.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (14)
1. a kind of display panel, comprising: array substrate, to box substrate and be located at the array substrate and it is described to box substrate it
Between liquid crystal layer；The liquid crystal layer includes: nematic liquid crystal and the polymer network that is formed by polymerisable liquid crystal monomer；The liquid
One of end face of crystal layer is incidence surface；Orientation is provided on the array substrate and the opposite face to box substrate
Layer；It is characterized in that,
The oriented layer includes multiple first orientation areas, and multiple first orientation areas are along the direction for being gradually distance from the incidence surface
Arrangement；Angle between the differently- oriented directivity and default differently- oriented directivity in the first orientation area of at least one oriented layer takes with described first
Increase to area to the increase of the incidence surface distance.
2. display panel according to claim 1, which is characterized in that the differently- oriented directivity in the first orientation area of each oriented layer
Angle between the default differently- oriented directivity increases with the first orientation area to the increase of the incidence surface distance.
3. display panel according to claim 1, which is characterized in that the array substrate includes multiple pixel regions, multiple
Pixel region lines up multiple lines and multiple rows, and every row pixel region extends along the direction for being gradually distance from the incidence surface, the oriented layer it is multiple
The multiple row pixel region of first orientation area and the array substrate corresponds.
4. display panel according to claim 3, which is characterized in that the two column pixel region of arbitrary neighborhood of the array substrate
Between be formed with spacer region, the oriented layer further include with the one-to-one second orientation area of the spacer region,
In each oriented layer, the differently- oriented directivity in multiple second orientation areas is identical；Alternatively,
Angle at least one oriented layer, between the differently- oriented directivity in any one second orientation area and the default differently- oriented directivity
Angle between the differently- oriented directivity and the default differently- oriented directivity in the Liang Ge first orientation area in the second orientation area two sides it
Between.
5. display panel as claimed in any of claims 1 to 4, which is characterized in that identical bits in two oriented layer
The differently- oriented directivity set is identical.
6. display panel as claimed in any of claims 1 to 4, which is characterized in that the default differently- oriented directivity is flat
Row is in the display surface of the display panel, alternatively, display surface of the default differently- oriented directivity perpendicular to the display panel.
7. display panel according to claim 6, which is characterized in that when the default differently- oriented directivity is parallel to the display
When the display surface of panel, the incidence surface is the end face parallel with the default differently- oriented directivity of the liquid crystal layer；When described pre-
If differently- oriented directivity perpendicular to the display panel display surface when, the incidence surface be the liquid crystal layer any one end face.
8. display panel according to claim 6, which is characterized in that the material that the oriented layer is made includes polyamides Asia
Amine；When display surface of the default differently- oriented directivity perpendicular to the display panel, carbon is had on the main chain of the polyimides
Hydrogen side chain or fluorocarbon side chains.
9. display panel as claimed in any of claims 1 to 4, which is characterized in that any two first orientation area
Differently- oriented directivity and the default differently- oriented directivity between angle difference less than 30 °.
10. display panel as claimed in any of claims 1 to 4, which is characterized in that gather described in the liquid crystal layer
The mass percent of polymeric network is between 2%~6%.
11. display panel as claimed in any of claims 1 to 4, which is characterized in that the thickness of the liquid crystal layer exists
Between 3~5 μm.
12. the production method of display panel described in a kind of any one of claim 1 to 11 characterized by comprising
There is provided array substrate and to box substrate；
In array substrate and to being respectively set on box substrate to orientation film layer, described to orientation film layer includes multiple first orientations
Area；
It is orientated respectively to described in two to orientation film layer, to form two oriented layer；
The array substrate of oriented layer will be formed with and to box substrate to box, and filling liquid crystal mixture between, the liquid
Brilliant mixture includes nematic liquid crystal and polymerisable liquid crystal monomer；
The liquid crystal compound is solidified, so that the polymerisable liquid crystal monomer forms polymer network；Liquid after solidification
Brilliant mixture is formed as liquid crystal layer, and one of end face of the liquid crystal layer is incidence surface；
Wherein, multiple first orientation areas wait for alignment films at least one along the direction arrangement for being gradually distance from the incidence surface
When layer is orientated, the angle between the differently- oriented directivity in first orientation area and default differently- oriented directivity is with the first orientation area to institute
It states the increase of incidence surface distance and increases.
13. production method according to claim 12, which is characterized in that what is be orientated described in two to orientation film layer
In step, it is orientated using the method for light orientation.
14. a kind of display device, which is characterized in that including display surface described in any one of light source and claim 1 to 11
The incidence surface of plate, the light source and the liquid crystal layer is oppositely arranged, to emit light into the liquid crystal layer from the incidence surface.
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| CN108628024A (en) * | 2017-03-24 | 2018-10-09 | 京东方科技集团股份有限公司 | A kind of transparent display panel, its production method and display device |
| CN107991814B (en) * | 2017-12-25 | 2021-04-30 | Tcl华星光电技术有限公司 | Liquid crystal display panel and preparation method thereof |
| CN108873457B (en) * | 2018-07-16 | 2021-01-26 | 京东方科技集团股份有限公司 | Reflective liquid crystal display panel, display device and driving method thereof |
| US10824024B2 (en) * | 2018-08-23 | 2020-11-03 | Innolux Corporation | Electronic apparatus |
| CN113238415B (en) * | 2021-05-13 | 2023-05-23 | 北京京东方技术开发有限公司 | Transparent display panel and display device |
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| CN1116722A (en) * | 1993-09-18 | 1996-02-14 | 株式会社金星社 | Method for forming an orientation film of photopolymer in a liquid crystal display |
| CN1687832A (en) * | 2005-06-02 | 2005-10-26 | 友达光电股份有限公司 | Liquid crystal display device |
| CN101738780A (en) * | 2008-11-10 | 2010-06-16 | 深圳富泰宏精密工业有限公司 | Liquid crystal display and manufacture method thereof |
| JP2012027150A (en) * | 2010-07-21 | 2012-02-09 | Casio Comput Co Ltd | Method for manufacturing polymer dispersion type liquid crystal display element, and the display element |
| CN104317093A (en) * | 2014-11-20 | 2015-01-28 | 京东方科技集团股份有限公司 | Liquid crystal display device and manufacturing method thereof |
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| US8654281B2 (en) * | 2009-09-04 | 2014-02-18 | California State University, Sacramento | Photo-patterned pre-tilt liquid crystal cells, lenses and methods |
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| CN1116722A (en) * | 1993-09-18 | 1996-02-14 | 株式会社金星社 | Method for forming an orientation film of photopolymer in a liquid crystal display |
| CN1687832A (en) * | 2005-06-02 | 2005-10-26 | 友达光电股份有限公司 | Liquid crystal display device |
| CN101738780A (en) * | 2008-11-10 | 2010-06-16 | 深圳富泰宏精密工业有限公司 | Liquid crystal display and manufacture method thereof |
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