CN109143446A - Polarizer and display device - Google Patents
Polarizer and display device Download PDFInfo
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- CN109143446A CN109143446A CN201811162068.4A CN201811162068A CN109143446A CN 109143446 A CN109143446 A CN 109143446A CN 201811162068 A CN201811162068 A CN 201811162068A CN 109143446 A CN109143446 A CN 109143446A
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- compensation film
- light
- phase compensation
- bulge
- film
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
This application involves a kind of polarizers, it include: first phase compensation film, the first phase compensation film has first refractive index, the first phase compensation film includes incidence surface and light-emitting surface, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, it is curved surface that the bulge-structure, which has at least partly surface,；Second phase compensation film, it is formed in the light-emitting surface of the first phase compensation film, the second phase compensation film has the second refractive index, the first refractive index is greater than second refractive index, and the second phase compensation film offers multiple grooves all the same with the bulge-structure shape, size on the face contacted with the first phase compensation film；Light polarizing film is set in the second phase compensation film.The application has the first phase compensation film of bulge-structure by setting, vertical incidence to the light of first phase compensation film can be made to reflect, so that the light energy at positive visual angle is assigned to side view angle.
Description
Technical field
This application involves display fields, more particularly to a kind of polarizer and display device.
Background technique
With the development of display technology, display device is because having many advantages, such as that high image quality, power saving, fuselage is thin is widely used in
In this electronic product, wherein the quality of image quality is to influence the most important factor of consumer experience.Liquid crystal display device is general
It is made of backlight module and the display panel being placed on backlight module, backlight module provides incident light for display panel, the incidence
Light is usually to concentrate vertical incidence to display panel, therefore when positive apparent direction watches display screen, can obtain and preferably show picture
Matter, but when side-looking direction watches display screen, image quality is poor, and colour cast is than more serious, so that the visual angle normally shown is smaller.Mesh
Before, use will filter in VA liquid crystal (Vertical Alignment liquid crystal, homeotropic alignment liquid crystal) display
Sub-pixel in piece is again divided into the means of multiple sub-pixels to improve the image quality at side view angle, to expand display view angle.But
It is that this method needs more TFT (Thin Film Transistor, thin film transistor (TFT)) elements to drive sub-pixel, so
It certainly will be the metal routing for increasing panel itself, cause the region of light-permeable to become smaller, influence the light transmittance of panel, influence image quality.
And if in order to guarantee brightness, need the performance for improving backlight module, it made to generate the incident light of more high brightness, can so increase again
Add backlight cost.
Summary of the invention
Based on this, it is necessary to which the problem small for display device display view angle, side view image quality is poor provides a kind of polarizer
And display device.
A kind of polarizer, comprising:
First phase compensation film, the first phase compensation film have first refractive index, the first phase compensation film packet
Incidence surface and light-emitting surface are included, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, the bulge-structure is deposited
It is curved surface at least partly surface；
Second phase compensation film is formed in the light-emitting surface of the first phase compensation film, the second phase compensation film tool
There is the second refractive index, the first refractive index is greater than second refractive index, and the second phase compensation film is with described first
Multiple grooves all the same with the bulge-structure shape, size are offered on the face of phase compensation film contact；
Light polarizing film is set in the second phase compensation film.
Above-mentioned polarizer, due to being equipped with first phase compensation film and second phase compensation film, and first refractive index is greater than the
Two refractive index, i.e. light are incident in first phase compensation film from the incidence surface of first phase compensation film and penetrate first phase compensation
It is to enter in light thinning medium from light substantia compacta, therefore can be rolled in the contact interface of two membranes when film enters second phase compensation film
Phenomenon is penetrated, light is made to deflect.In the present solution, the light-emitting surface of first phase compensation film is formed with bulge-structure, protrusion knot
Structure at least partly surface is curved surface, that is, there is part of the surface and incidence surface formation angle is acute angle, and vertical incidence light enters first
After phase compensation film, in the incidence angle that the surface of bulge-structure is formed less than 90 °, therefore to reflect, make vertical incidence
Light deflects, so that positive visual angle energy be made to be assigned to side view angle, improves the image quality at side view angle.Meanwhile first phase compensates
Film and second phase compensation film also have the function of phase compensation, and can correct light will appear phase delay after liquid crystal layer
And the phenomenon that colour cast.
It is round that the bulge-structure, which is the part of the surface of strip structure and the strip structure, in one of the embodiments,
Arc surface, multiple strip structures are arranged side by side.
The part of the surface of the bulge-structure is sphere curved surface, multiple bulge-structures in one of the embodiments,
In on the light-emitting surface be in two-dimensional matrix array be distributed.
The radius of the circular arc camber is less than or equal to strip structure in the first direction in one of the embodiments,
On twice of height；
The center of the adjacent strip structure away from be greater than or equal to strip structure length in a second direction and
Less than or equal to 10 μm；
Wherein, using the direction perpendicular to the light-emitting surface as first direction, on the light-emitting surface perpendicular to the strip
The direction of the extending direction of structure is second direction.
The light-emitting surface is rectangle in one of the embodiments, and the radius of the sphere curved surface is less than or equal to described
Twice of the height of bulge-structure in a first direction；
The center of the adjacent bulge-structure away from be greater than or equal to bulge-structure length in a second direction and
Less than or equal to 10 μm；
The center of the adjacent bulge-structure away from be greater than or equal to length of the bulge-structure on third direction and
Less than or equal to 10 μm；
Wherein, using the direction perpendicular to the light-emitting surface as first direction, with the extending direction of the rectangle width for the
Two directions, using the extending direction of the rectangle length as third direction, first direction, second direction, between third direction three
It is orthogonal.
The polarizer in one of the embodiments, further include:
Protective film is supported, the support protective film is set between the second phase compensation film and the light polarizing film.
The polarizer in one of the embodiments, further include:
Protective film is supported, the support protective film is set on the incidence surface of the first phase compensation film.
The first phase compensation film is positivity uniaxial A- compensation film, first folding in one of the embodiments,
The abnormal refraction rate that rate is the A- compensation film is penetrated, the positivity uniaxial A- compensation film includes nematic liquid crystal molecule.
A kind of polarizer, the polarizer include:
First phase compensation film, the first phase compensation film have first refractive index, the first phase compensation film packet
Incidence surface and light-emitting surface are included, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, the bulge-structure
At least partly surface is circular arc camber, and it is acute angle that the circular arc camber and the incidence surface, which are formed by angle,；First phase
Position compensation film be positivity uniaxial A- compensation film, the first refractive index be the A- compensation film abnormal refraction rate, it is described just
Property uniaxial A- compensation film include nematic liquid crystal molecule；
Second phase compensation film is formed in the light-emitting surface of the first phase compensation film, the second phase compensation film tool
There is the second refractive index, the first refractive index is greater than second refractive index, and the second phase compensation film is with described first
Multiple grooves all the same with the bulge-structure shape, size are offered on the face of phase compensation film contact；Second phase
Position compensation film is negativity uniaxial C- compensation film, and second refractive index is the normal refractive index of the C- compensation film, described negative
Property uniaxial C- compensation film include smectic；
Light polarizing film is set in the second phase compensation film.
A kind of display device, comprising:
Backlight module, for providing light source；
Display panel is placed in the backlight module side, for showing picture；
The display panel includes the aforementioned polarizer.
Detailed description of the invention
Fig. 1 is the polarizer partial structural diagram in an embodiment；
Fig. 2 is the structural schematic diagram of the first phase compensation film in an embodiment；
Fig. 3 A is the three-dimensional structure diagram of first phase compensation film in an embodiment；
Fig. 3 B is the stereoscopic schematic diagram of first phase compensation film in another embodiment；
Fig. 4 A is the structural schematic diagram of the first phase compensation film in another embodiment；
Fig. 4 B is the stereoscopic schematic diagram of the first phase compensation film in another embodiment；
Fig. 5 is the partial sectional view of the polarizer in an embodiment；
Fig. 6 A is the structural schematic diagram of the polarizer in an embodiment；
Fig. 6 B is the structural schematic diagram of the polarizer in another embodiment；
Fig. 6 C is the structural schematic diagram of the polarizer in another embodiment；
Fig. 7 is the cross-sectional view of the display panel structure in an embodiment；
Fig. 8 is the structural schematic diagram of the display device in an embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
In the description of the present application, it is to be understood that term " on ", "lower", "vertical", "horizontal", "inner", "outside" etc.
The orientation or positional relationship of instruction is method based on the figure or positional relationship, is merely for convenience of description the application and Jian
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as the limitation to the application.
As shown in Figure 1, polarizer 10 includes first phase compensation film 100, second phase compensation film 200 and light polarizing film 300.
Wherein, first phase compensation film 100 includes incidence surface and light-emitting surface, and incidence surface be the one side of reception incident light, and light is from incidence
Face enters first phase compensation film 100 and projects from light-emitting surface, and light-emitting surface is equipped with multiple bulge-structures with preset shape
101, it is curved surface that bulge-structure 101, which has at least partly surface, that is, there is part of the surface and incidence surface is formed by angle as α, α
For acute angle, meet 0 ° of 90 ° of < α <.Second phase compensation film 200 is formed in first phase compensation film 100, second phase compensation
Film 200 offers multiple all the same with 101 shape of bulge-structure, size on the face contacted with first phase compensation film 100
Groove 210, i.e. second phase compensation film 200 and first phase compensation film 100 can be realized by bulge-structure 101 and groove 210
Fitting completely.First phase compensation film 100 has first refractive index n1, and second phase compensation film 200 has the second refractive index n2,
First refractive index n1 is greater than the second refractive index n2.Enter second phase compensation film 200 when light penetrates first phase compensation film 100
When, it is to enter light thinning medium from light substantia compacta, therefore in the contact interface of first phase compensation film 100 and second phase compensation film 200
It can reflect.In a display device, since most light are vertical incidence into polarizer, i.e., most light hang down
Directly in incidence surface, this programme by the first phase compensation film 100 and second phase compensation film 200 of setting different refractivity and
Bulge-structure 101 is arranged in the light-emitting surface of first phase compensation film 100, and vertical incidence light is incident to from first phase compensation film 100
When second phase compensation film 200, in conjunction with the surface characteristics of bulge-structure 101, it can be reflected on the surface of bulge-structure 101,
The propagation path for changing vertical incidence light, makes light deflect, so that positive visual angle light type energy be made to be assigned to big visual angle, improves
The image quality at side view angle.Polarizer 10 further includes light polarizing film 300, and light polarizing film 300 is used to carry out polarization manipulation to incident light and project
Polarised light.
In one embodiment, light polarizing film 300 can be PVA (Polyvinyl alcohol, polyvinyl alcohol) material, mainly
Play a part of to absorb and penetrate to polarised light, light polarizing film 300 chooses current product common on the market, and penetrating shaft is parallel to
0/180 degree of direction, absorption axiss are parallel to the product in 90/270 degree of direction.Certainly, it is flat that light polarizing film 300, which can also choose penetrating shaft,
For row in 90/270 degree of direction, absorption axiss are parallel to 0/180 degree of direction.
As shown in connection with fig. 2, when light R0, which vertically penetrates first phase compensation film 100, enters second phase compensation film 200,
Incidence angle of the vertical incidence light at bulge-structure surface is γ, 0 90 ° of < γ <, therefore light can reflect, and refraction angle is
β, since light is to enter light thinning medium from light substantia compacta, so β is greater than γ, i.e. light propagation path changes, and light R1 deviates
Originally normally incident direction is dissipated to side, therefore is had more light and injected side, and the image quality of side view angle is improved.It can
With understanding, first refractive index n1 and the difference of the second refractive index n2 are bigger, and refraction angle when reflecting is bigger, easier
Light type energy will be faced and be assigned to big visual angle.In one embodiment, the value range of first refractive index n1 is 1.0 < n1 < 2.5,
The value range of second refractive index n2 is 1.0 < n1 < 2.5.In one embodiment, if the preferred value model of m=n1-n2, m
It encloses for 0.01 < m < 2.
As shown in Figure 3A, the light-emitting surface of first phase compensation film 100 is formed with multiple bulge-structures 101, multiple protrusion knots
Structure 101 is that the part of the surface of strip structure and strip structure is circular arc camber, and multiple bulge-structures 101 can be arranged side by side.It can be with
Understand, part of the surface mentioned here can be the one side of the opposite light-emitting surface of bulge-structure 101, that is, bulge-structure 101
Upper surface.When the upper surface of bulge-structure 101 is arc-shaped surface, circular arc camber and first phase compensation film 100 enter light
The angle in face can be the tangent line of the surface any point of arc-shaped curved surface and the angle of incidence surface, which is acute angle, as Fig. 1
In α, also, 0 ° of 90 ° of < α <.As shown in Figure 3B, the part of the surface of bulge-structure 101 may be sphere curved surface, Ke Yili
Solution, part of the surface mentioned here can be the one side of the opposite light-emitting surface of bulge-structure 101, that is, bulge-structure 101
Upper surface.Multiple bulge-structures 101 can be on light-emitting surface to be distributed in two-dimensional matrix array, and sphere curved surface and first phase are mended
The angle for repaying 100 incidence surface of film was the tangent line of sphere curved surface surface any point and the angle of incidence surface, which is acute angle, i.e.,
For the α in Fig. 1, also, 0 ° of 90 ° of < α <.Since in a display device, the light that backlight module generates is largely to concentrate to hang down
It directly is incident to display panel, that is, is incident to the most of incidence surface perpendicular to phase compensation film of light of phase compensation film.We
In case, due to being equipped with curved protrusion structure 101, vertical incidence light can be reflected, light deviates original vertical incidence
Direction is dissipated to side, therefore is had more light and injected side, and the image quality of side view angle is improved.When bulge-structure 101
Upper surface only reflects in one-dimensional square for circular arc camber and when multiple bulge-structures 101 are arranged side by side, arrives divergence of beam
The two sides of arc-shaped curved surface；When sphere curved surface is in the upper surface of bulge-structure 101 and multiple bulge-structures 101 are distributed in spotted array
When (two-dimensional matrix array), it can be reflected in two-dimensional surface, make divergence of beam to all angles of two-dimensional surface, to make
Preferable image quality can be presented in each visual angle.
As shown in Fig. 2, first phase compensation film 10 may include incidence surface and light-emitting surface, light-emitting surface and incidence surface be can be
Shape, size rectangle all the same, are also possible to other shapes.It is circular arc camber or spherical shape in the upper surface of bulge-structure 101
When curved surface, the radius of circular arc camber or sphere curved surface in a first direction is less than or equal to bulge-structure 101 in a first direction
Twice of height, first direction is namely perpendicular to the direction of light-emitting surface, it is to be understood that for along the extending direction of Y-axis.
In Fig. 2, R is the radius of curved surface in a first direction, and D is the height of bulge-structure 101 in a first direction, radius R and height D
Between relationship can be expressed as R≤2D so that when film layer is relatively thin reduce curved surface radius of curvature, radius of curvature is smaller, folding
It penetrates effect to be more obvious, the energy range that can be assigned to big visual angle is more.
Further, there is interval between adjacent two bulge-structure, interval can also be not present.Please continue to refer to Fig. 2, when
When bulge-structure 101 is strip structure, section is bilateral symmetry, wherein second direction is vertical stripe on light-emitting surface
Second direction can be interpreted as the direction extended along an axis X by the direction of the extending direction of structure here.Lx is strip projected parts structure
Length in a second direction, Px be the center of strip projected parts structure in a second direction away from.Bulge-structure 101 is in second direction
Upper satisfaction: Px >=Lx and Px≤10 μm, 10 μm of wavelength for visible light.As Px > Lx, between adjacent protrusion structure 101 exists
Every, as Px > Lx, i.e., bulge-structure 101 can be arranged in period distances, when light travels to light thinning medium from light substantia compacta, the interval
It is equivalent to grating, interval generates diffraction phenomena closer to the easier interval between adjacent protrusion structure 101 of wavelength,
And diffraction can also change the propagation path of light, dissipate vertical incidence light towards side, will further face light energy and be assigned to
The image quality at side view angle is improved at side view angle.
Similarly, it when the part of the surface of bulge-structure 101 is sphere curved surface, can have identical as strip structure
Section, so, herein referring concurrently to Fig. 2, Fig. 3 B, can have the bulge-structure 101 of sphere curved surface in a second direction
Length is Lx, and Px is to have the center of the bulge-structure 101 of sphere curved surface in a second direction away from Py is to have sphere curved surface
Center of the bulge-structure 101 on third direction is away from correspondingly, Ly (figure does not indicate) is the bulge-structure for having sphere curved surface
101 length on third direction, preferably Lx=Ly, wherein since light-emitting surface is rectangle, therefore, with the side perpendicular to light-emitting surface
To for first direction, using the extending direction of rectangle width as second direction, using the extending direction of rectangle length as third direction,
One direction, second direction, orthogonal between third direction three, here, first direction can be understood as along the extension side of Y-axis
To second direction can be understood as the extending direction along X-axis, and third direction can be understood as the extending direction along Z axis.Px,Py,
Lx, Ly meet: Px >=Lx and Px≤10 μm；Py >=Ly and Py≤10 μm；10 μm of wavelength for visible light.As Px > Lx, Py >
When Ly, there is interval in adjacent protrusion structure 101, i.e. bulge-structure 101 is distributed in spotted array, and light travels to light from light substantia compacta and dredges
When matter, so that it may dissipate vertical incidence light towards side by interval and curved surface, will further face light energy and be assigned to side view
The image quality at side view angle is improved at angle.
It should be understood that the transparent or semitransparent material that phase compensation film should be light-permeable is made and has phase compensation
Function.In one embodiment, liquid crystal is filled in phase compensation film, liquid crystal is birefringent material, can be rolled over when light enters liquid crystal
Penetrate into two light of normal light and unusual light, wherein the refractive index of normal light is normal refractive index, and the refractive index of unusual light is anti-
Normal refractive index, abnormal refraction rate direction are the photoelectricity field direction direction parallel with liquid crystal optic axis, and normal refractive index direction is photoelectricity
The field direction vertical with liquid crystal optic axis, abnormal refraction rate direction are vertical with normal refractive index direction.In the present embodiment, such as Fig. 5
Shown, first phase compensation film 100 can be positivity uniaxial A- compensation film, can be filled inside positivity uniaxial A- compensation film to
Column phase liquid crystal 102, nematic liquid crystal 102 are the rodlike type liquid crystal of strip, and the optical axis of nematic liquid crystal 102 is parallel with incidence surface, to
The optical axis in direction and nematic liquid crystal abnormal refraction rate nae (extraordinary refractive index) of column phase liquid crystal
In parallel, i.e. the abnormal refraction rate nae of nematic liquid crystal is parallel with incidence surface, the normal refractive index nao of nematic liquid crystal
The direction (ordinary refractive index) is perpendicular to the direction abnormal refraction rate nae, and nae > nao；Second phase is mended
Repaying film 200 can be negativity uniaxial C- compensation film, and disc-like liquid crystal 201, disk like liquid can be filled in negativity uniaxial C- compensation film
The optical axis of crystalline substance 201 is perpendicular to incidence surface, abnormal refraction rate nce (the extraordinary refractive of disc-like liquid crystal 201
Index) direction is parallel with the optical axis of disc-like liquid crystal, normal refractive index nco (the ordinary refractive of disc-like liquid crystal
Index) direction is oriented parallel to incidence surface perpendicular to the direction abnormal refraction rate nce, i.e. the normal refractive index nco of disc-like liquid crystal,
And nco > nce, in the present embodiment, first refractive index is the abnormal refraction rate nae of positivity uniaxial A- compensation film, the second folding
The direction in direction and nco that rate is negativity uniaxial C- compensation film normal refractive index nco, nae is penetrated each parallel to incidence surface.
Light polarizing film 300 has absorption axiss and penetrating shaft, and the direction of vibration polarization luminous energy parallel with penetrating shaft passes through light polarizing film.
In one embodiment, it is influenced to reduce phase compensation film to the polarization of light, the optical axis (liquid crystal light of phase compensation film can be made
Axis) it is parallel with the penetrating shaft of light polarizing film, polarization direction of the incident light after phase compensation film is parallel with the penetrating shaft of polarizing coating,
Therefore polarizing coating can be passed completely through.In the present solution, due to positivity uniaxial A- compensation film and negativity uniaxial C- compensation film
Has the function of phase compensation, using positivity uniaxial A- compensation film and negativity uniaxial C- compensation film in addition to that incident light can be made to exist
Interface deflects to expand visual angle, enhances outside the image quality of side view angle, can also play the role of phase compensation.
In traditional technology, usually using polyvinyl alcohol as light polarizing film, and polyvinyl alcohol has extremely strong hydrophily, to protect
The physical characteristic of light polarizing film is protected, usually one layer of Triafol T support membrane, triacetate fiber need to be set in the two sides of polaroid
Plain support membrane is with high light transmittance, water resistance number and has certain mechanical strength, can protect to polaroid.In this implementation
In example, due to being equipped with first phase compensation film 100 and second phase compensation film 200, first phase compensation in the side of polaroid
Film 100 and second phase compensation film 200 both can be carried out phase compensation and deflected to light, can also act as protective layer to protect
Protect light polarizing film.It should be noted that first phase compensation film 100 and second phase compensation film 200 need to have suitable thickness with
Realize the protective effect to light polarizing film.
Please continue to refer to Fig. 4 A, Fig. 4 B.For the structural schematic diagram and solid of the first phase compensation film in another embodiment
Structure chart.The multiple bulge-structures 101 formed on the light-emitting surface of first phase compensation film 100, multiple bulge-structures 101 are strip
Structure and the part of the surface of strip structure are circular arc camber, and multiple bulge-structures 101 can be arranged side by side.As shown in Figure 4 B, convex
Playing structure 101 can be regarded as a fan-shaped strip projected parts structure, and the section shape parallel with paper is a sector, fan-shaped
A line length be R, the spacing of adjacent protrusion structure 101 in a second direction be Px, fan-shaped bulge-structure is in first party
To height be D, meet relationship described in previous embodiment between D and R, Px is less than or equal to 10 μm, and R here can also be with
Length on regarding as bulge-structure 101 in a second direction, in the present embodiment, bulge-structure both had inclined-plane but also with
Curved surface, so multiple and different refraction angles can be obtained when reflecting to incident light R0, so that emergent ray R1
Be emitted in all directions so that the light energy at positive visual angle be assigned to it is more uniform when side view angle.It is appreciated that the present embodiment
With the shape that the difference is that only of the embodiment of aforementioned arc-shaped surface, specific visual angle diffusion principle, refractive index, size table
Show it is all identical as the description of aforementioned circular arc camber, and the first refractive index of the present embodiment bulge-structure 101 be greater than second compensation
Second refractive index of film, the light for ensuring that vertical incidence so are all by optically denser medium to optically thinner medium, then are cooperated solely
Some bulge-structures, so that light is spread.Correspondingly, the part of the surface of bulge-structure 101 can also be sphere curved surface, convex
Playing structure 101 can be in two-dimensional matrix array on light-emitting surface.
A kind of polarizer is also provided, polarizer includes first phase compensation film, and first phase compensation film has first refractive
Rate, first phase compensation film includes incidence surface and light-emitting surface, and light-emitting surface is equipped with multiple bulge-structures with preset shape,
At least partly surface of bulge-structure is circular arc camber, and it is acute angle that circular arc camber and incidence surface, which are formed by angle,；First phase
Compensation film is positivity uniaxial A- compensation film, and first refractive index is the abnormal refraction rate of A- compensation film, positivity uniaxial A- compensation
Film includes nematic liquid crystal molecule；Second phase compensation film is formed in the light-emitting surface of first phase compensation film, second phase compensation
Film has the second refractive index, and first refractive index is greater than the second refractive index, and second phase compensation film connects with first phase compensation film
Multiple grooves all the same with bulge-structure shape, size are offered on the face of touching；Second phase compensation film is negativity uniaxial
C- compensation film, the second refractive index are the normal refractive index of the C- compensation film, and negativity uniaxial C- compensation film includes disc-like liquid crystal
Molecule；Light polarizing film is set in second phase compensation film.
Above-described embodiment, by the way that the bulge-structure with circular arc camber, while basis are arranged in first phase compensation film
Refraction effect caused by the refractive index different from second phase compensation film can make vertical incidence to the incidence of first phase compensation film
Light reflects, so that the light energy at positive visual angle is assigned to side view angle, and then solves the problems, such as colour cast.Further, due to
Entire polarizer does not use additional metal routing, so there is no the transmissivities for influencing light, and then influences asking for image quality
Topic.
It as shown in Figure 6A, is the structural schematic diagram of the polarizer in an embodiment.In polarizer, in light polarizing film 300
Light emission side can be folded successively and set optical compensation films 500 and pressure-sensitive adhesive layer 600, and polarizer 10 is pasted on glass by pressure-sensitive adhesive layer 600
On substrate, phase compensation can be carried out to polaroid 300 by optical compensation films 500 and played a supporting role in protection.
It as shown in Figure 6B, is the structural schematic diagram of the polarizer in another embodiment.In polarizer, in light polarizing film 300
Light emission side can successively fold and set optical compensation films 500 and pressure-sensitive adhesive layer 600, polarizer 10 can also include being set to second phase to mend
Repay the support protective film 400 between film 200 and light polarizing film 300.Polarizer 10 is pasted on glass substrate by pressure-sensitive adhesive layer 600
On, phase compensation can be carried out to polaroid 300 by optical compensation films and play a supporting role in protection.
The material of support protective film 400 can include but is not limited to polyethylene terephthalate film, triacetate fiber
Any one in plain film or polymethyl methacrylate film.(Polyethylene terephthalate gathers to benzene two PET
Formic acid class plastics) there is good optical property and weatherability, amorphous PET plastic has good optical transparence.Separately
Outer PET plastic has excellent abrasion performance frictional property and dimensional stability and electrical insulating property.TAC(Triacetyl
Cellulose, Triafol T), mainly for the protection of LCD polarizer.(Polymethyl Methacrylate gathers PMMA
Methyl methacrylate), there is good chemical stability and weatherability.Simultaneously as support protective film 400 plays support simultaneously
The effect of light polarizing film 300 is protected, so support 400 thickness of protective film should be ensured that the weatherability of light polarizing film 300 is unaffected, is protected
Shield light polarizing film 300 does not contact external environment, prevents moisture from entering light polarizing film 300.
It as shown in Figure 6 C, is the structural schematic diagram of the polarizer in another embodiment.In polarizer, in light polarizing film 300
Light emission side can successively fold and set optical compensation films 500 and pressure-sensitive adhesive layer 600, polarizer 10 can also include being set to first phase to mend
Repay the support protective film 400 on the incidence surface of film 100.Polarizer 10 is pasted on glass substrate by pressure-sensitive adhesive layer 600, is passed through
Optical compensation films can carry out phase compensation and be played a supporting role in protection to polaroid 300.
It is appreciated that support protective film 400 is referred to the description in previous embodiment, do not repeat further herein.
The application further relates to a kind of display panel, and display panel may be, for example, LCD (Thin Film Transistor
Liquid Crystal Displayer, Thin Film Transistor-LCD) display panel, OLED (Organic Light-
Emitting Diode, Organic Light Emitting Diode) display panel, QLED (Quantum Dot Light Emitting
Diodes, light emitting diode with quantum dots) display panel, curved face display panel or other display panels.The application is with display panel
To be illustrated for LCD display panel, as shown in fig. 7, the display panel include upper polarizer 1000, lower polarizer 2000,
Upper substrate 3000, lower substrate 4000 and the liquid crystal layer 6000 being located between upper substrate 3000 and lower substrate 4000, light exists
Incident sequence in display panel are as follows: be introduced into lower polarizer 2000, then pass through lower substrate 4000, secondly pass through liquid crystal layer
6000, enter to inject upper substrate 3000 after the rotation of liquid crystal layer 6000, finally enters polarizer 1000.Wherein descend polarizer
2000 be the polarizer 10 of aforementioned polarizer embodiment introduction.It is appreciated that upper polarizer 1000 or aforementioned polarizer
The polarizer of embodiment introduction.It is illustrated for polarizer 2000 herein below.Lower polarizer 2000 may include the first phase
Position compensation film 100, first phase compensation film 100 have first refractive index, the light including incidence surface and out of first phase compensation film 100
Face, and light-emitting surface be equipped with multiple bulge-structures 101 with preset shape, bulge-structure 101 exist at least partly surface and
It is acute angle that incidence surface, which is formed by angle,；Further include second phase compensation film 200, is formed in going out for first phase compensation film 100
Smooth surface, second phase compensation film 200 have the second refractive index, and first refractive index is greater than the second refractive index；It further include light polarizing film
300, it is set in second phase compensation film 200.Light is incident from first phase compensation film 100, and penetrates first phase compensation film
100 enter second phase compensation film 200, and phase compensation film can carry out phase compensation to incident ray.Since light is close from light
Matter enters light thinning medium, and incident ray is not equal to 90 ° in the incidence angle of at least partly contact surface, therefore refraction effect can occur,
Make vertical incidence light to side view angular deflection, positive visual angle energy is assigned to side view angle, improves the image quality at side view angle.Wherein, polarisation
The specific structure of plate is being described in detail above, and details are not described herein again.
A kind of display device is also disclosed in the application, as shown in figure 8, including backlight module 5 and being placed in above backlight module
Display panel 1, wherein display panel 1 be previous embodiment introduction display panel.Backlight module 5 is for providing incident light
R0 (Fig. 8 is not indicated), incident light R0 are concentrated on vertical direction in display panel 1 is incident in the range of low-angle, this is small
Angle, θ is smaller than 30 °, and most of light that display panel 1 receives is vertical incidence light, since there are first in display panel 1
Phase compensation film 100 and second phase compensation film 200 and 100 light-emitting surface of first phase compensation film are equipped with multiple with preset shape
Bulge-structure 101,101 surface of bulge-structure by refraction vertical incidence light can be carried out deflection generate emergent light R1,
To which positive visual angle energy is assigned to side view angle, the image quality at side view angle is improved.In the structure and display panel of display panel
The structure of polarizer is being described above, and details are not described herein again.Wherein, backlight module 5 may include side entering type LED light source 51,
Reflector plate 52, light guide plate 53.The upper and lower surface of light guide plate 53 is equipped with strip V-groove, the side wall of 53 lower surface V-groove of light guide plate
Parallel with side entering type light source 51, the V-groove of 53 upper surface of light guide plate and the V-groove of lower surface are mutually perpendicular to.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of polarizer, which is characterized in that the polarizer includes:
First phase compensation film, the first phase compensation film have first refractive index, the first phase compensation film include into
Smooth surface and light-emitting surface, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, the bulge-structure is at least
Part of the surface is curved surface；
Second phase compensation film, is formed in the light-emitting surface of the first phase compensation film, and the second phase compensation film has the
Two refractive index, the first refractive index be greater than second refractive index, the second phase compensation film with the first phase
Multiple grooves all the same with the bulge-structure shape, size are offered on the face of compensation film contact；
Light polarizing film is set in the second phase compensation film.
2. polarizer as described in claim 1, which is characterized in that the bulge-structure is strip structure and the strip structure
Part of the surface be circular arc camber, multiple strip structures be arranged side by side.
3. polarizer as described in claim 1, which is characterized in that the part of the surface of the bulge-structure is sphere curved surface, more
A bulge-structure on the light-emitting surface be in two-dimensional matrix array be distributed.
4. polarizer as claimed in claim 2, which is characterized in that the radius of the circular arc camber is less than or equal to the strip
Twice of the height of structure in a first direction；
The center of the adjacent strip structure is away from being greater than or equal to strip structure length in a second direction and be less than
Or it is equal to 10 μm；
Wherein, using the direction perpendicular to the light-emitting surface as first direction, on the light-emitting surface perpendicular to the strip structure
Extending direction direction be second direction.
5. polarizer as claimed in claim 3, which is characterized in that the light-emitting surface is rectangle, the radius of the sphere curved surface
Less than or equal to twice of the height of the bulge-structure in a first direction；
The center of the adjacent bulge-structure is away from being greater than or equal to bulge-structure length in a second direction and be less than
Or it is equal to 10 μm；
The center of the adjacent bulge-structure is away from being greater than or equal to length of the bulge-structure on third direction and be less than
Or it is equal to 10 μm；
Wherein, using the direction perpendicular to the light-emitting surface as first direction, using the extending direction of the rectangle width as second party
To, using the extending direction of the rectangle length as third direction, first direction, second direction, between third direction three mutually
Vertically.
6. polarizer as described in claim 1, which is characterized in that further include:
Protective film is supported, the support protective film is set between the second phase compensation film and the light polarizing film.
7. polarizer as described in claim 1, which is characterized in that further include:
Protective film is supported, the support protective film is set on the incidence surface of the first phase compensation film.
8. polarizer as described in claim 1, which is characterized in that the first phase compensation film is positivity uniaxial A- compensation
Film, the first refractive index are the abnormal refraction rate of the A- compensation film, and the positivity uniaxial A- compensation film includes nematic phase
Liquid crystal molecule.
9. a kind of polarizer, which is characterized in that the polarizer includes:
First phase compensation film, the first phase compensation film have first refractive index, the first phase compensation film include into
Smooth surface and light-emitting surface, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, the bulge-structure is at least
Part of the surface is circular arc camber, and the circular arc camber and the incidence surface are formed by angle as acute angle；The first phase is mended
Repaying film is positivity uniaxial A- compensation film, and the first refractive index is the abnormal refraction rate of the A- compensation film, the positivity list
Optical axis A- compensation film includes nematic liquid crystal molecule；
Second phase compensation film, is formed in the light-emitting surface of the first phase compensation film, and the second phase compensation film has the
Two refractive index, the first refractive index be greater than second refractive index, the second phase compensation film with the first phase
Multiple grooves all the same with the bulge-structure shape, size are offered on the face of compensation film contact；The second phase is mended
Repaying film is negativity uniaxial C- compensation film, and second refractive index is the normal refractive index of the C- compensation film, the negativity list
Optical axis C- compensation film includes smectic；
Light polarizing film is set in the second phase compensation film.
10. a kind of display device, comprising:
Backlight module, for providing light source；
Display panel is placed in the backlight module side, for showing picture；
It is characterized in that, the display panel includes polarizer as described in any one of claim 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162068.4A CN109143446A (en) | 2018-09-30 | 2018-09-30 | Polarizer and display device |
| PCT/CN2018/119697 WO2020062588A1 (en) | 2018-09-30 | 2018-12-07 | Polarizing plate and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162068.4A CN109143446A (en) | 2018-09-30 | 2018-09-30 | Polarizer and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109143446A true CN109143446A (en) | 2019-01-04 |
Family
ID=64810629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811162068.4A Pending CN109143446A (en) | 2018-09-30 | 2018-09-30 | Polarizer and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109143446A (en) |
| WO (1) | WO2020062588A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633987A (en) * | 2019-01-30 | 2019-04-16 | 惠科股份有限公司 | Optical film layer and display device |
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Also Published As
| Publication number | Publication date |
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| WO2020062588A1 (en) | 2020-04-02 |
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