CN109212652A - Polarizing plate and display device - Google Patents
Polarizing plate and display device Download PDFInfo
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- CN109212652A CN109212652A CN201811161397.7A CN201811161397A CN109212652A CN 109212652 A CN109212652 A CN 109212652A CN 201811161397 A CN201811161397 A CN 201811161397A CN 109212652 A CN109212652 A CN 109212652A
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- 230000003287 optical effect Effects 0.000 claims abstract description 91
- 230000001681 protective effect Effects 0.000 claims abstract description 50
- 230000001154 acute effect Effects 0.000 claims abstract description 8
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 7
- 230000010287 polarization Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 abstract description 14
- 239000010408 film Substances 0.000 description 153
- 239000004973 liquid crystal related substance Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 241001573498 Compacta Species 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229920006304 triacetate fiber Polymers 0.000 description 1
- BAZVSMNPJJMILC-UHFFFAOYSA-N triadimenol Chemical compound C1=NC=NN1C(C(O)C(C)(C)C)OC1=CC=C(Cl)C=C1 BAZVSMNPJJMILC-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- 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
-
- 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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
The present application relates to a polarizing plate including: the optical compensation film has a first refractive index, the optical compensation film comprises a light incident surface and a light emergent surface, a plurality of protruding structures with preset shapes are arranged on the light emergent surface, and an angle formed by at least part of the surfaces of the protruding structures and the light incident surface is an acute angle; the supporting protective film is formed on the light emitting surface of the optical compensation film, the supporting protective film has a second refractive index, the first refractive index is greater than the second refractive index, and a plurality of grooves which are the same as the convex structures in shape and size are formed in the surface, in contact with the optical compensation film, of the supporting protective film; and the polarizing film is arranged on the supporting protective film. By arranging the phase compensation films with different refractive indexes, the visual angle can be enlarged while phase compensation is carried out, and the image quality of the side viewing angle is improved. The application also relates to a display device with the polarizing plate.
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:
Optical compensation films, the optical compensation films have first refractive index, and the optical compensation films include incidence surface and go out
Smooth surface, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, there is at least partly table in the bulge-structure
Face is curved surface；
Protective film is supported, the light-emitting surface of the optical compensation films is formed in, the support protective film has the second refractive index,
The first refractive index is greater than second refractive index, and the support protective film is opened on the face contacted with the optical compensation films
Equipped with multiple grooves all the same with the bulge-structure shape, size；
Light polarizing film is set on the support protective film.
Above-mentioned polarizer, due to being equipped with optical compensation films and support protective film, and first refractive index is greater than the second refractive index,
I.e. light be incident in optical compensation films from the incidence surface of optical compensation films and penetrate optical compensation films enter support protective film when, be
Enter in light thinning medium from light substantia compacta, therefore refraction effect can occur in the contact interface of two membranes, light is made to deflect.We
In case, the light-emitting surface of optical compensation films is formed with bulge-structure, and the bulge-structure at least partly surface and incidence surface form angle
For acute angle, after vertical incidence light enters optical compensation films, in the incidence angle that the surface of bulge-structure is formed less than 90 °, therefore it is
It reflects, the light of vertical incidence is made to deflect, so that positive visual angle energy be made to be assigned to side view angle, improve the picture at side view angle
Matter.Meanwhile optical compensation films and support protective film also have the function of phase compensation, can correct light meeting after liquid crystal layer
There is the phenomenon that phase delay and 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 the strip structure in a 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 optical compensation films are positivity single shaft A- compensation film in one of the embodiments, and the first refractive index is
The abnormal refraction rate of the A- compensation film, the positivity single shaft A- compensation film include nematic liquid crystal molecule, the nematic phase liquid
The optical axis of brilliant molecule is parallel to the incidence surface.
The support protective film is negativity single shaft C- compensation film in one of the embodiments, and second refractive index is
The normal refractive index of the C- compensation film, the negativity single shaft C- compensation film include smectic, the disc-like liquid crystal point
The optical axis of son is perpendicular to the incidence surface.
The light polarizing film has penetrating shaft in one of the embodiments, and polarization direction is parallel to the light of the penetrating shaft
Line can pass through the light polarizing film, and the optical axis of the positivity single shaft A- compensation film is parallel with the penetrating shaft.
The polarizer further includes phase compensation film in one of the embodiments, be set to the light polarizing film on, for pair
The light polarizing film carries out phase compensation.
A kind of polarizer, comprising:
Optical compensation films, the optical compensation films have first refractive index, and the optical compensation films include incidence surface and go out
Smooth surface, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, there is at least partly table in the bulge-structure
Face is sphere curved surface, and the sphere curved surface and the incidence surface are formed by angle as acute angle, and the optical compensation films are positivity
Uniaxial A- compensation film, the first refractive index are the abnormal refraction rate of the positivity single shaft A- compensation film, the positivity single shaft A-
Compensation film includes nematic liquid crystal molecule, and the optical axis of the nematic liquid crystal molecule is parallel to the incidence surface；
Protective film is supported, the light-emitting surface of the optical compensation films is formed in, the support protective film has the second refractive index,
The first refractive index is greater than second refractive index, and the support protective film is opened on the face contacted with the optical compensation films
Equipped with multiple grooves all the same with the bulge-structure shape, size；
Light polarizing film is set on the support protective 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 optical compensation films in an embodiment；
Fig. 3 A is the three-dimensional structure diagram of optical compensation films in an embodiment；
Fig. 3 B is the stereoscopic schematic diagram of optical compensation films in another embodiment；
Fig. 4 A is the structural schematic diagram of the optical compensation films in another embodiment；
Fig. 4 B is the stereoscopic schematic diagram of the optical compensation films in another embodiment；
Fig. 5 is the partial sectional view of the polarizer in an embodiment；
Fig. 6 is the structural schematic diagram of the polarizer in an 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 optical compensation films 100, support protective film 200 and light polarizing film in combination with Fig. 6
300.Wherein, optical compensation films 100 include incidence surface and light-emitting surface, and incidence surface be the one side of reception incident light, and light is from incidence
Face enters optical compensation films 100 and projects from light-emitting surface, and light-emitting surface is equipped with multiple bulge-structures 101 with preset shape,
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 is sharp
Angle meets 0 ° of 90 ° of < α <.Support protective film 200 is formed on optical compensation films 100, and support protective film 200 is mended with optics
It repays and offers multiple grooves 210 all the same with 101 shape of bulge-structure, size on the face of the contact of film 100, is i.e. support protective film
200 can realize complete be bonded by bulge-structure 101 and groove 210 with optical compensation films 100.Optical compensation films 100 have the
There is the second refractive index n, first refractive index n1 to be greater than the second refractive index n for one refractive index n1, support protective film 200.When light penetrates
It is to enter light thinning medium from light substantia compacta, therefore in optical compensation films 100 and support when optical compensation films 40 enter support protective film 41
The contact interface of protective film 200 can reflect.In liquid crystal display device, since most light are vertical incidence to inclined
In tabula rasa, i.e., optical compensation films 100 and branch that most light pass through setting different refractivity perpendicular to incidence surface, this programme
It supports protective film 200 and bulge-structure 101 is set in the light-emitting surface of phase compensation film 100, vertical incidence light is from optical compensation films 100
When being incident to support protective film 200, in conjunction with the surface characteristics of bulge-structure 101, it can be rolled on the surface of bulge-structure 101
It penetrates, changes the propagation path of vertical incidence light, light is made to deflect, so that positive visual angle light type energy is made to be assigned to big visual angle,
Improve 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 simultaneously to incident light
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
90/270 degree of direction, absorption axiss are parallel to 0/180 degree of direction.Certainly, light polarizing film 300 can also choose penetrating shaft and be parallel to 0/
180 degree direction, absorption axiss are parallel to the product in 90/270 degree of direction.
As shown in connection with fig. 2, when light R0, which vertically penetrates optical compensation films 100, enters support protective film 200, vertical incidence
Incidence angle of the light at bulge-structure surface is γ, 0 90 ° of < γ <, therefore light can reflect, refraction angle β, due to light
Line is to enter light thinning medium from light substantia compacta, and β is greater than γ, i.e. light propagation path changes, and light R1 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.It should be understood that first
Refractive index n1 and the difference of the second refractive index n are bigger, and refraction angle when reflecting is bigger, easier to face light type energy
It is assigned to big visual angle.In one embodiment, the value range of first refractive index n1 is 1.0 < n1 < 2.5, the second refractive index n's
Value range is 1.0 < n1 < 2.5.In one embodiment, if the value range of m=n1-n, m are 0.01 < m < 1.5.
As shown in Figure 3A, the light-emitting surface of optical compensation films 100 is formed with multiple bulge-structures 101, multiple bulge-structures 101
Part of the surface for strip structure and strip structure is circular arc camber, and multiple bulge-structures 101 can be arranged side by side.It is appreciated that
Part of the surface mentioned here can be the one side of the opposite light-emitting surface of bulge-structure 101, that is, the upper table of bulge-structure 101
Face.When the upper surface of bulge-structure 101 is arc-shaped surface, the angle of circular arc camber and 100 incidence surface of optical compensation films can
Thought that the tangent line of the surface any point of arc-shaped curved surface and the angle of incidence surface, the angle were acute angle, the α in as Fig. 1, and
And 0 ° of 90 ° of < α <.As shown in Figure 3B, the part of the surface of bulge-structure 101 may be sphere curved surface, it will be understood that here
Described part of the surface can be the one side of the opposite light-emitting surface of bulge-structure 101, that is, the upper surface of bulge-structure 101.
Multiple bulge-structures 101 are distributed on light-emitting surface in two-dimensional matrix array, be that is to say and are distributed in two-dimensional matrix array, sphere curved surface
Angle with 100 incidence surface of optical compensation films was the tangent line of sphere curved surface surface any point and the angle of incidence surface, the angle
For acute angle, α in as Fig. 1, also, 0 ° of 90 ° of < α <.Since the light that in a display device, backlight module generates is most of
It is to concentrate vertical incidence to display panel, that is, the light major part for being incident to phase compensation film enters light perpendicular to phase compensation film
Face.In the present solution, can reflect to vertical incidence light due to being equipped with curved protrusion structure 101, light deviates original hang down
Straight incident direction is dissipated to side, therefore is had more light and injected side, and the image quality of side view angle is improved.When protrusion is tied
The upper surface of structure 101 only reflects in one-dimensional square for circular arc camber and when multiple bulge-structures 101 are arranged side by side, makes light
Line diffuses to 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 in two dimension
It when matrix array is distributed, can be reflected in two-dimensional surface, make divergence of beam to all angles of two-dimensional surface, to make each
Preferable image quality can be presented in a visual angle.
As shown in Fig. 2, optical compensation films 10 may include incidence surface and light-emitting surface, light-emitting surface and incidence surface can be shape
Shape, size rectangle all the same, are also possible to other shapes.It is circular arc camber or spherical song in the upper surface of bulge-structure 101
When face, the radius of curved surface in a first direction is less than or equal to twice of the height of bulge-structure 101 in a first direction, and 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 curved surface the
Radius on one direction, D are the height of bulge-structure 101 in a first direction, and the relationship between radius R and height D can be with table
It is shown as R≤2D, so that reducing the radius of curvature of curved surface when film layer is relatively thin, radius of curvature is smaller, and refraction effect is more obvious, can be with
The energy range for being assigned to big visual angle is more.
Further, there are gaps between adjacent two bulge-structure, and gap also may not be present.Please continue to refer to Fig. 2, protrusion
Structure 101 is bilateral symmetry, and the length of bulge-structure 101 in a second direction is Lx, between adjacent protrusion structure 101
Between be divided into Px, Px >=Lx, as Px > Lx, there are gap, gap width Px-Lx=X to work as P=2r for adjacent protrusion structure 101
When, adjacent protrusion structure is connected with each other, and gap is not present.In one embodiment, Px >=Lx and Px≤10 μm, i.e. bulge-structure
101 arrange in period distances, and when light travels to light thinning medium from light substantia compacta, which is equivalent to grating, and gap width is closer
The easier gap location between adjacent protrusion structure 101 of wavelength generates diffraction phenomena, and diffraction can also change the biography of light
Path is broadcast, dissipates vertical incidence light towards side, light energy will be further faced and be assigned to side view angle, and improve the picture at side view angle
Matter.
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, optional 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 openings of sizes for general pixel.As Px >
When Lx, Py > Ly, there is interval in adjacent protrusion structure 101, i.e. bulge-structure 101 is distributed (two-dimensional matrix array in spotted array
Distribution), when light travels to light thinning medium from light substantia compacta, so that it may vertical incidence light is dissipated towards side by interval and curved surface, into
One step will face light energy and be assigned to side view angle, improve the image quality at side view angle.
It should be understood that the transparent or semitransparent material that optical compensation films 10 should be light-permeable is made and has phase compensation
Function.In one embodiment, liquid crystal is filled in optical compensation films 10, liquid crystal is birefringent material, when light enters liquid crystal
Two light of normal light and unusual light can be reflected into, wherein the refractive index of normal light is normal refractive index, the refractive index of unusual light
For abnormal refraction rate, abnormal refraction rate direction is the photoelectricity field direction direction parallel with liquid crystal optic axis, and normal refractive index direction is
The optical electric 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
Shown in Fig. 5, optical compensation films 100 can be positivity single shaft A- compensation film, and nematic phase can be filled inside positivity single shaft A- compensation film
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, nematic phase
The direction (extraordinary refractive index) abnormal refraction rate nae of liquid crystal and the optical axis of nematic liquid crystal are flat
Row, i.e. the direction 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；Support protective film
200 the second refractive index can be expressed as n, and the second refractive index that is to say normal refractive index.In the present embodiment, first refractive index
For the abnormal refraction rate nae of positivity uniaxial A- compensation film, the second refractive index is the normal refractive index n for supporting protective film 200,
The direction of nae and the direction of n are 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 of positivity single shaft A- compensation film can be made
Brilliant optical axis), the penetrating shaft of incident light polarization direction and polarizing coating by phase compensation film after parallel with the penetrating shaft of light polarizing film
In parallel, therefore polarizing coating can be passed completely through.In the present solution, since positivity single shaft A- compensation film has the function of phase compensation,
Expand visual angle in addition to incident light can be made to deflect in interface using positivity single shaft A- compensation film, enhances side view angle image quality
Outside, phase compensation can also be played the role of.
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 optical compensation films 100 and support protective film 200 in the side of polaroid, optical compensation films 100 and support are protected
Cuticula 200 both can be carried out phase compensation and deflect to light, can also act as protective layer to protect light polarizing film.It should be noted that
, optical compensation films 100 and support protective film 200 need to have suitable thickness to 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 stereochemical structure of the optical compensation films in another embodiment
Figure.The multiple bulge-structures 101 formed on the light-emitting surface of optical compensation films 100, multiple bulge-structures 101 are strip structure and item
The part of the surface of shape structure is circular arc camber, and multiple bulge-structures 101 can be arranged side by side.As shown in Figure 4 B, bulge-structure 101
It can be regarded as a fan-shaped strip projected parts structure, 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, the height of fan-shaped bulge-structure in a first direction
For D, relationship described in previous embodiment is met between D and R, Px is less than or equal to 10 μm, and R here can also regard convex as
Rise structure 101 in a second direction on length, in the present embodiment, bulge-structure had both had inclined-plane but also with curved surface, institute
Multiple and different refraction angles can be obtained when reflecting to incident light R0, so that emergent ray R1 is along each
Direction outgoing 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 it is aforementioned
The embodiment of arc-shaped surface the difference is that only shape, specific visual angle diffusion principle, refractive index, size Expressing all with
The description of aforementioned circular arc camber is identical, and the first refractive index of the present embodiment optical compensation films is greater than the second of support protective film
Refractive index, the light for ensuring that vertical incidence so is all by optically denser medium to optically thinner medium, then cooperates exclusive protrusion
Structure, so that light is spread.Correspondingly, the part of the surface of bulge-structure 101 can also be sphere curved surface, bulge-structure
101 can be distributed on light-emitting surface in two-dimensional matrix array.
As shown in fig. 6, can also successively be folded in the light emission side of light polarizing film 300 in polarizer and be equipped with 400 He of phase compensation film
Pressure-sensitive adhesive layer 500, phase compensation film 400 can play the role of support protection and phase compensation to light polarizing film 300, and polarizer 10 is logical
Pressure-sensitive adhesive layer 500 is crossed to be pasted on glass substrate.
A kind of polarizer, including optical compensation films are also provided, optical compensation films have first refractive index, optical compensation films packet
Incidence surface and light-emitting surface are included, and light-emitting surface is equipped with multiple bulge-structures with preset shape, bulge-structure has at least portion
Dividing surface is sphere curved surface, and it is acute angle that sphere curved surface and incidence surface, which are formed by angle, and optical compensation films are positivity single shaft A- benefit
Film is repaid, first refractive index is the abnormal refraction rate of positivity single shaft A- compensation film, and positivity single shaft A- compensation film includes nematic liquid crystal
The optical axis of molecule, nematic liquid crystal molecule is parallel to incidence surface；Protective film is supported, the light-emitting surface of optical compensation films is formed in, is propped up
Supportting protective film has the second refractive index, and first refractive index is greater than the second refractive index, and support protective film is contacted with optical compensation films
Face on offer it is multiple with bulge-structure shape, the grooves that size is all the same；Light polarizing film is set on support protective film.
Above-described embodiment, by optical compensation films be arranged have sphere curved surface bulge-structure, while according to branch
Refraction effect caused by the different refractive index of protective film is supportted, vertical incidence to the incident light of optical compensation films can be made to reflect,
To which the light energy at positive visual angle is assigned to side view angle, and then solve the problems, such as colour cast.Further, since entire polarizer does not have
Have using additional metal routing, so there is no the transmissivity for influencing light, and then the problem of influence image quality.
The application further relates to a kind of display panel, as shown in fig. 7, the display panel includes upper polarizer 1000, lower polarisation
Plate 2000, upper substrate 3000, lower substrate 4000 and the liquid crystal layer 6000 being located between upper substrate 3000 and lower substrate 4000,
Light 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 enters to inject upper substrate 3000 after the rotation of liquid crystal layer 6000, finally enters polarizer 1000.Wherein descend polarizer
2000 be the polarizer of aforementioned polarizer embodiment introduction.It is appreciated that upper polarizer 1000 or aforementioned structure of polarized light
The structure of polarized light of embodiment introduction.It is illustrated for polarizer 2000 herein below.Lower polarizer 2000 may include optics
Compensation film 100, optical compensation films 100 have first refractive index, and optical compensation films 100 include incidence surface and light-emitting surface, and light out
Face is equipped with multiple bulge-structures 101 with preset shape, and bulge-structure 101 has at least partly surface and incidence surface institute shape
At angle be acute angle；Further include support protective film 200, be formed in the light-emitting surface of optical compensation films 100, supports protective film 200
With the second refractive index, first refractive index is greater than the second refractive index；Further include light polarizing film 300, is set on support protective film 200.
Light enters support protective film 200 after 100 incidence of optical compensation films, and optical compensation films 100 can carry out phase to incident ray
Position compensation.Since light enters light thinning medium from light substantia compacta, and incident ray is not equal in the incidence angle of at least partly contact surface
90 °, 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, the specific structure of polarizer 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 does not show), incident light R0 are concentrated on vertical direction in being incident to display panel 1 in the range of low-angle, the small angle
Degree θ is smaller than 30 °, and most of light that display panel 1 receives is vertical incidence light, since there are optics benefits in display panel 1
It repays film 100 and support protective film 200 and 100 light-emitting surface of optical compensation films is equipped with multiple bulge-structures 101 with preset shape,
Vertical incidence light can be carried out by refraction by deflection on 101 surface of bulge-structure and generate emergent light R1 (Fig. 8 does not show), thus will
Positive visual angle energy is assigned to side view angle, improves the image quality at side view angle.The structure of display panel and the polarisation in display panel
The structure of plate is being described above, and details are not described herein again.Wherein, backlight module 5 may include side entering type LED light source 51, reflection
Piece 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 and side
It is parallel to enter formula 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 characterized by comprising
Optical compensation films, the optical compensation films have first refractive index, and the optical compensation films include incidence surface and light-emitting surface,
And the light-emitting surface is equipped with multiple bulge-structures with preset shape, it is song that the bulge-structure, which has at least partly surface,
Face；
Protective film is supported, is formed in the light-emitting surface of the optical compensation films, the support protective film has the second refractive index, described
First refractive index is greater than second refractive index, and the support protective film offers on the face contacted with the optical compensation films
Multiple grooves all the same with the bulge-structure shape, size；
Light polarizing film is set on the support protective 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 the optical compensation films are positivity single shaft A- compensation film, institute
The abnormal refraction rate that first refractive index is the A- compensation film is stated, the positivity single shaft A- compensation film includes nematic liquid crystal point
The optical axis of son, the nematic liquid crystal molecule is parallel to the incidence surface.
7. polarizer as claimed in claim 6, which is characterized in that the light polarizing film has penetrating shaft, and polarization direction is parallel to
The optical axis of light polarizing film described in the light-transmissive of the penetrating shaft, the positivity single shaft A- compensation film is parallel with the penetrating shaft.
8. polarizer as described in claim 1, which is characterized in that further include:
Phase compensation film is set in the light polarizing film, for carrying out phase compensation to the light polarizing film.
9. a kind of polarizer characterized by comprising
Optical compensation films, the optical compensation films have first refractive index, and the optical compensation films include incidence surface and light-emitting surface,
And the light-emitting surface is equipped with multiple bulge-structures with preset shape, it is ball that the bulge-structure, which has at least partly surface,
It is acute angle that shape curved surface, the sphere curved surface and the incidence surface, which are formed by angle, and the optical compensation films are positivity single shaft A-
Compensation film, the first refractive index are the abnormal refraction rate of the positivity single shaft A- compensation film, the positivity single shaft A- compensation film
Comprising nematic liquid crystal molecule, the optical axis of the nematic liquid crystal molecule is parallel to the incidence surface；
Protective film is supported, is formed in the light-emitting surface of the optical compensation films, the support protective film has the second refractive index, described
First refractive index is greater than second refractive index, and the support protective film offers on the face contacted with the optical compensation films
Multiple grooves all the same with the bulge-structure shape, size；
Light polarizing film is set on the support protective 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 |
|---|---|---|---|
| CN201811161397.7A CN109212652A (en) | 2018-09-30 | 2018-09-30 | Polarizing plate and display device |
| PCT/CN2018/119682 WO2020062587A1 (en) | 2018-09-30 | 2018-12-07 | Polarization plate and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161397.7A CN109212652A (en) | 2018-09-30 | 2018-09-30 | Polarizing plate and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109212652A true CN109212652A (en) | 2019-01-15 |
Family
ID=64982829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811161397.7A Withdrawn CN109212652A (en) | 2018-09-30 | 2018-09-30 | Polarizing plate and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109212652A (en) |
| WO (1) | WO2020062587A1 (en) |
Cited By (4)
| 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 |
| WO2020155203A1 (en) * | 2019-01-30 | 2020-08-06 | 惠科股份有限公司 | Optical film layer and display device |
| CN111751912A (en) * | 2019-03-26 | 2020-10-09 | 微采视像科技股份有限公司 | Optical components and display devices |
| CN114217462A (en) * | 2021-07-15 | 2022-03-22 | 友达光电股份有限公司 | Viewing angle compensation film and display device using same |
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| CN101086590A (en) * | 2006-02-22 | 2007-12-12 | 统宝光电股份有限公司 | System for displaying images involving aligned liquid crystal displays |
| CN101158778A (en) * | 2007-11-14 | 2008-04-09 | 友达光电（苏州）有限公司 | Wide viewing angle film and liquid crystal display device using the wide viewing angle film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100498267B1 (en) * | 2003-01-28 | 2005-06-29 | 주식회사 엘지화학 | Vertically aligned liquid crystal display having a positive compensation film |
| CN101413641B (en) * | 2008-12-03 | 2011-04-06 | 友达光电股份有限公司 | Light guide plate and backlight module |
| US10983388B2 (en) * | 2017-03-15 | 2021-04-20 | Lg Display Co., Ltd. | Display device |
-
2018
- 2018-09-30 CN CN201811161397.7A patent/CN109212652A/en not_active Withdrawn
- 2018-12-07 WO PCT/CN2018/119682 patent/WO2020062587A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086590A (en) * | 2006-02-22 | 2007-12-12 | 统宝光电股份有限公司 | System for displaying images involving aligned liquid crystal displays |
| CN101158778A (en) * | 2007-11-14 | 2008-04-09 | 友达光电（苏州）有限公司 | Wide viewing angle film and liquid crystal display device using the wide viewing angle film |
Cited By (7)
| 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 |
| WO2020155278A1 (en) * | 2019-01-30 | 2020-08-06 | 惠科股份有限公司 | Optical film and display device |
| WO2020155203A1 (en) * | 2019-01-30 | 2020-08-06 | 惠科股份有限公司 | Optical film layer and display device |
| CN111751912A (en) * | 2019-03-26 | 2020-10-09 | 微采视像科技股份有限公司 | Optical components and display devices |
| CN111751912B (en) * | 2019-03-26 | 2022-07-26 | 微采视像科技股份有限公司 | Optical element and display device |
| CN114217462A (en) * | 2021-07-15 | 2022-03-22 | 友达光电股份有限公司 | Viewing angle compensation film and display device using same |
| CN114217462B (en) * | 2021-07-15 | 2023-12-08 | 友达光电股份有限公司 | Viewing angle compensation film and display device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020062587A1 (en) | 2020-04-02 |
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Application publication date: 20190115 |