CN109143445A - polarizing plate, display panel and display device - Google Patents
polarizing plate, display panel and display device Download PDFInfo
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- CN109143445A CN109143445A CN201811161580.7A CN201811161580A CN109143445A CN 109143445 A CN109143445 A CN 109143445A CN 201811161580 A CN201811161580 A CN 201811161580A CN 109143445 A CN109143445 A CN 109143445A
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- 230000001681 protective effect Effects 0.000 claims abstract description 76
- 230000003287 optical effect Effects 0.000 claims abstract description 70
- 230000001154 acute effect Effects 0.000 claims abstract description 11
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000004990 Smectic liquid crystal Substances 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 16
- 239000012528 membrane Substances 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 152
- 239000004973 liquid crystal related substance Substances 0.000 description 23
- 238000010586 diagram Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 230000000149 penetrating effect Effects 0.000 description 6
- 241001573498 Compacta Species 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 239000010409 thin film Substances 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
- 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
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002096 quantum dot Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- -1 i.e. 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
- 239000000126 substance 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
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-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
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present application relates to a polarizing plate including: the supporting protective film is provided with a first refractive index, the supporting protective 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 surfaces of the protruding structures and the light incident surface is an acute angle; the optical compensation film is formed on the light emitting surface of the supporting protective film, the optical compensation 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 supporting protective film, of the optical compensation film; and the polarizing film is arranged on the optical compensation film. This application sets up and has support protective film membrane and the optical compensation membrane of predetermineeing the protruding structure of shape and can make vertical incidence improve the light of membrane and take place the refraction to the visual angle to the light energy distribution that will be just at the visual angle looks the angle.
Description
Technical field
This application involves display fields, more particularly to a kind of polarizer, display panel 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 polarisation
Plate, display panel and display device.
A kind of polarizer, comprising:
Protective film is supported, the support protective film has first refractive index, and the support protective film includes incidence surface and goes 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
It is acute angle that face and the incidence surface, which are formed by angle,；
Optical compensation films are formed in the light-emitting surface of the support protective film, and the optical compensation films have the second refractive index,
The first refractive index is greater than second refractive index, and the optical compensation films are opened on the face contacted with the support protective film
Equipped with multiple grooves all the same with the bulge-structure shape, size；
Light polarizing film is set on the optical compensation films.
Above-mentioned polarizer, due to being equipped with support protective film and optical compensation films, and first refractive index is greater than the second refractive index,
I.e. light from support protective film incidence surface be incident to support protective film in and penetrate support protective film enter optical compensation films 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.Due to
In liquid crystal display device, most of light is vertical incidence to incidence surface, in the conventional technology, each tunic table in polarizer
Face is smooth and is mutually perpendicular to vertical incidence light, therefore still vertically projects when most of incident light vertical incidence to polarizer,
Cause positive visual angle image quality preferably and side view angle image quality is poor.And in the present solution, the light-emitting surface of support protective film is formed with raised knot
It is acute angle that structure, the bulge-structure at least partly surface and incidence surface, which form angle, after vertical incidence light enters support protective film,
The incidence angle that the surface of bulge-structure is formed is to reflect less than 90 °, and the light of vertical incidence is made to deflect, from
And positive visual angle energy is made to be assigned to side view angle, improve the image quality at side view angle.Meanwhile protective film and optical compensation films being supported also to have
The function of phase compensation can correct the phenomenon that light will appear phase delay and colour cast after liquid crystal layer.
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 optical compensation films are positivity uniaxial A- compensation film, the first refractive index in one of the embodiments,
For the normal refractive index of the positivity uniaxial A- compensation film, the positivity uniaxial A- compensation film includes nematic liquid crystal point
The optical axis of son, the nematic liquid crystal molecule is parallel to the incidence surface.
The optical compensation films are negativity uniaxial C- compensation film, second refractive index in one of the embodiments,
For the normal refractive index of the C- compensation film, the negativity uniaxial C- compensation film includes smectic, the disk like liquid
The optical axis of brilliant molecule is perpendicular to the incidence surface.
A kind of polarizer, comprising:
Protective film is supported, the support protective film has first refractive index, and the support protective film includes incidence surface and goes out
Smooth surface, and the light-emitting surface is equipped with multiple bulge-structures with preset shape, at least partly surface of the bulge-structure
For circular arc camber, the circular arc camber and the incidence surface are formed by angle as acute angle；
Optical compensation films are formed in the light-emitting surface of the support protective film, and the optical compensation films have the second refractive index,
The first refractive index is greater than second refractive index, and the optical compensation films are opened on the face contacted with the support protective film
Equipped with multiple grooves all the same with the bulge-structure shape, size；
The optical compensation films are positivity uniaxial A- compensation film, and the first refractive index is positivity uniaxial A- benefit
The normal refractive index of film is repaid, the positivity uniaxial A- compensation film includes nematic liquid crystal molecule, the nematic liquid crystal molecule
Optical axis be parallel to the incidence surface；
Light polarizing film is set on the optical compensation films.
A kind of display panel, including the aforementioned polarizer.
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 is the aforementioned display panel.
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 support protective film in an embodiment；
Fig. 3 A is the three-dimensional structure diagram that protective film is supported in an embodiment；
Fig. 3 B is the stereoscopic schematic diagram that protective film is supported in another embodiment；
Fig. 4 A is the structural schematic diagram of the support protective film in another embodiment；
Fig. 4 B is the stereoscopic schematic diagram of the support protective film in another embodiment；
Fig. 5 A is the partial sectional view of the polarizer in an embodiment；
Fig. 5 B is the partial sectional view of the polarizer in another 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 may include support protective film 100, optical compensation films 200 and light polarizing film 300.Its
In, support protective film 100 includes incidence surface and light-emitting surface, and incidence surface is the one side for receiving incident light, and light enters from the plane of incidence
It supports protective film 100 and is projected from light-emitting surface, light-emitting surface is equipped with multiple bulge-structures 101 with preset shape, protrusion knot
There is at least partly surface in structure 101 and incidence surface is formed by angle as α, and α is acute angle, meets 0 ° of 90 ° of < α <.Optical compensation
Film 200 is formed on support protective film 100, and optical compensation films 200 offer multiple on the face contacted with support protective film 100
The groove 210 all the same with 101 shape of bulge-structure, size, i.e. optical compensation films 200 can be by convex with support protective film 100
It plays structure 101 and groove 210 realizes complete fitting.Support protective film 100 that there is first refractive index n1, optical compensation films 200 have
There are the second refractive index n2, first refractive index n1 to be greater than the second refractive index n2.Enter optical compensation when light penetrates support protective film 100
It is to enter light thinning medium from light substantia compacta, therefore can send out in support protective film 100 and the contact interface of optical compensation films 200 when film 200
Raw refraction.In liquid crystal display device, since most light are vertical incidence into polarizer, i.e., most light hang down
Directly in incidence surface, this programme passes through the support protective film 100 and optical compensation films 200 of setting different refractivity and protects in support
Bulge-structure 101 is arranged in the light-emitting surface of film 100, when vertical incidence light is incident to optical compensation films 200 from support protective film 100,
It in conjunction with the surface characteristics of bulge-structure 101, can be reflected on the surface of bulge-structure 101, change the propagation of vertical incidence light
Path 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 include light polarizing film 300, and light polarizing film 300 is used to carry out polarization manipulation to incident light and projects 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 support protective film 100, enters optical compensation films 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, so β is greater than γ, i.e. light propagation path changes, and light R1 deviates original vertical
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 should be understood that
First refractive index n1 and the difference of the second refractive index n2 are bigger, and refraction angle when reflecting is bigger, easier to face light
Type energy 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 refraction
The value range of rate n2 is 1.0 < n1 < 2.5.In one embodiment, if the preferred value range of m=n1-n2, m are 0.01
< m < 1.5.
As shown in Figure 3A, the light-emitting surface of protective film 100 is supported to be 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 support 100 incidence surface of protective film 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 can be on light-emitting surface to be distributed in two-dimensional matrix array, and sphere curved surface and support protective film 100 enter light
The angle in face was the tangent line of sphere curved surface surface any point and the angle of incidence surface, which is acute angle, the α in as Fig. 1,
Also, 0 ° of 90 ° of < α <.Since in a display device, the light that backlight module generates is largely to concentrate vertical incidence to display
Panel is incident to the most of incidence surface perpendicular to phase compensation film of light of phase compensation film.In the present solution, due to being equipped with
Curved protrusion structure 101 can reflect vertical incidence light, and light deviates original normally incident direction, send out to side
It dissipates, therefore has more light and inject side, improve the image quality of side view angle.When the upper surface of bulge-structure 101 is circular arc
Curved surface and when multiple bulge-structures 101 are arranged side by side, only reflects in one-dimensional square, makes divergence of beam to the two of arc-shaped curved surface
Side；It, can be in two dimension when the upper surface of bulge-structure 101 is sphere curved surface and multiple bulge-structures 101 are in two-dimensional matrix array
It is reflected in plane, makes divergence of beam to all angles of two-dimensional surface, to make each visual angle that preferable picture can be presented
Matter.
As shown in Fig. 2, support protective film 100 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 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.Fig. 2
In, 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 it
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, refraction
Effect is more obvious, and 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 general openings of sizes for pixel.As Px >
When Lx, Py > Ly, there is interval in adjacent protrusion structure 101, i.e. bulge-structure 101 is distributed in two-dimensional matrix array, and light is close from light
When matter travels to light thinning medium, so that it may dissipate vertical incidence light towards side by interval and curved surface, will further face luminous energy
Amount is assigned to side view angle, improves the image quality at side view angle.
It should be understood that the transparent or semitransparent material that optical compensation films 200 should be light-permeable is made and there is phase to mend
The function of repaying.In one embodiment, liquid crystal is filled in optical compensation films 200, liquid crystal is birefringent material, and light enters liquid crystal
When can reflect into normal light and unusual two light of light, wherein the refractive index of normal light is normal refractive index, the refraction of unusual light
Rate is abnormal refraction rate, and abnormal refraction rate direction is the photoelectricity field direction direction parallel with liquid crystal optic axis, normal refractive index direction
For the optical electric field direction vertical with liquid crystal optic axis, abnormal refraction rate direction is vertical with normal refractive index direction.In the present embodiment,
As shown in Figure 5A, optical compensation films 200 are negativity uniaxial C- compensation film, and disk like liquid can be filled in negativity uniaxial C- compensation film
Crystalline substance 201, the optical axis of disc-like liquid crystal 201 is perpendicular to incidence surface, the abnormal refraction rate nce (extraordinary of disc-like liquid crystal 201
Refractive index) direction is parallel with the optical axis of disc-like liquid crystal, the normal refractive index nco (ordinary of disc-like liquid crystal
Refractive index) perpendicular to the direction abnormal refraction rate nce, i.e. the direction normal refractive index nco of disc-like liquid crystal is flat in direction
It goes in incidence surface, and nco > nce.Support the first refractive index of protective film 10 for normal refractive index n, and n > nco.In this reality
Apply in example, the second refractive index be negativity uniaxial C- compensation film normal refractive index nco, n direction and nco direction each parallel to
Incidence surface.As shown in Figure 5 B, optical compensation films 200 can also be positivity uniaxial A- compensation film, positivity uniaxial A- compensation film
The fillable nematic liquid crystal 202 in inside, nematic liquid crystal 202 are the rodlike type liquid crystal of strip, the optical axis of nematic liquid crystal 202 with enter
Smooth surface is parallel, and the abnormal refraction direction rate nae of nematic liquid crystal is parallel with the optical axis of nematic liquid crystal, i.e., nematic liquid crystal is anti-
The normal direction refractive index nae is parallel with incidence surface, and the direction normal refractive index nao of nematic liquid crystal is perpendicular to abnormal refraction rate nae
Direction, and nae > nao；In the present embodiment, the second refractive index is the normal refractive index nao of positivity uniaxial A- compensation film, branch
The first refractive index for supportting protective film 10 is normal refractive index n, and the direction of n > nao, n and the direction of nao are each parallel to entering light
Face.
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 of optical compensation films 200 can be made
Optical axis) it is parallel with the penetrating shaft of light polarizing film, the penetrating shaft of polarization direction and polarizing coating of the incident light after phase compensation film is flat
Row, therefore polarizing coating can be passed completely through.In the present solution, due to optical compensation films 100 (positivity uniaxial A- compensation film or negativity
Uniaxial C- compensation film) also have the function of phase compensation, using optical compensation films 100, (positivity uniaxial A- compensation film is negative
Property uniaxial C- compensation film) in addition to incident light can be made to deflect in interface to expand visual angle, enhance outside the image quality of side view angle, also
It can 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 support protective film 100 and optical compensation films 200 in the side of polaroid, protective film 100 and optics is supported to mend
Repaying film 200 both can be carried out phase compensation and deflects to light, can also act as protective layer to protect light polarizing film.It should be noted that
, support protective film 100 and optical compensation films 200 that 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 support protective film in another embodiment
Figure.The multiple bulge-structures 101 formed on the light-emitting surface of protective film 100 are supported, 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 101 in a first direction
Degree is D, and relationship described in previous embodiment is met between D and R, and Px is less than or equal to 10 μm, and R here can also regard as
Bulge-structure 101 in a second direction on length, in the present embodiment, bulge-structure 101 had both had inclined-plane but also with song
Face, so multiple and different refraction angles can be obtained when reflecting to incident light R0, so that the edge emergent ray R1
All directions 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
The embodiment of aforementioned arc-shaped surface the difference is that only shape, specific visual angle diffusion principle, refractive index, size Expressing
It is all identical as the description of aforementioned circular arc camber, and the first refractive index of the present embodiment bulge-structure 101 is greater than the second compensation film
The second refractive index, the light for ensuring that vertical incidence so is all by optically denser medium to optically thinner medium, then is cooperated exclusive
Bulge-structure so that light is spread.Correspondingly, the part of the surface of bulge-structure 101 can also be sphere curved surface, protrusion
Structure 101 can be on light-emitting surface in spotted array distribution (two-dimensional matrix array).
As shown in fig. 6, can successively be folded in the light emission side of light polarizing film 300 in polarizer and be equipped with compensation film 400 and anti-hyun film
500, one layer of pressure-sensitive adhesive layer 500 is covered on the light-emitting surface of compensation film 400, polarizer 10 is pasted on glass by pressure-sensitive adhesive layer 600
On glass substrate.
A kind of polarizer, including support protective film are also provided, support protective film has first refractive index, supports protective film packet
Incidence surface and light-emitting surface are included, and light-emitting surface is equipped with multiple bulge-structures with preset shape, bulge-structure is at least partly
Surface is circular arc camber, and it is acute angle that circular arc camber and incidence surface, which are formed by angle,；Optical compensation films are formed in support protective film
Light-emitting surface, optical compensation films have the second refractive index, first refractive index be greater than the second refractive index, optical compensation films with support
Multiple grooves all the same with bulge-structure shape, size are offered on the face of protective film contact；Light polarizing film is set to optical compensation
On film.
Above-described embodiment, by support protective film in setting have circular arc camber bulge-structure, while according to light
Refraction effect caused by the different refractive index of compensation film is learned, vertical incidence to the incident light of support protective film 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, 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 1 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 2000 or aforementioned polarizer
The polarizer 10 of embodiment introduction, for polarizer 2000 is the polarizer 10 of aforementioned polarizer embodiment introduction herein below,
Lower polarizer 2000 may include support protective film 100, and support protective film 100 has first refractive index, and support protective film 100 wraps
Incidence surface and light-emitting surface are included, and light-emitting surface is equipped with multiple bulge-structures 101 with preset shape, bulge-structure 101 exists
It is acute angle that at least partly surface and incidence surface, which are formed by angle,；Further include optical compensation films 200, is formed in support protective film
100 light-emitting surface, optical compensation films 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 on optical compensation films 200.Light is incident from support protective film 100, and penetrates support protective film 100 and enter optics benefit
Film 200 is repaid, optical compensation films 200 can carry out phase compensation to incident ray.Since light enters light thinning medium from light substantia compacta, and
Incident ray is not equal to 90 ° in the incidence angle of at least partly contact surface, therefore refraction effect can occur, and makes vertical incidence light to side
Positive visual angle energy is assigned to side view angle, improves the image quality at side view angle by visual angle deflection.Wherein, the specific structure of polarizer exists
It is described in detail above, 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, due to there is support in display panel 1
Protective film 100 and optical compensation films 200 and support 100 light-emitting surface of protective film be equipped with multiple bulge-structures with preset shape
101, vertical incidence light can be carried out by refraction by deflection on 101 surface of bulge-structure and generate emergent light R1, to will face
Angle energy is assigned to side view angle, improves the image quality at side view angle.The structure of display panel and the knot of the polarizer in display panel
Structure is being described above, and details are not described herein again.Wherein, backlight module 5 may include side entering type LED light source 51, and reflector plate 52 is led
Tabula rasa 53.The upper and lower surface of light guide plate 53 is equipped with strip V-groove, the side wall and side entering type light of 53 lower surface V-groove of light guide plate
Source 51 is parallel, and 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
Protective film is supported, for the support protective film with first refractive index, the support protective film includes incidence surface and light-emitting surface,
And the light-emitting surface be equipped with multiple bulge-structures with preset shape, at least partly surface of the bulge-structure with it is described
It is acute angle that incidence surface, which is formed by angle,；
Optical compensation films are formed in the light-emitting surface of the support protective film, and the optical compensation films have the second refractive index, described
First refractive index is greater than second refractive index, and the optical compensation films offer on the face contacted with the support protective film
Multiple grooves all the same with the bulge-structure shape, size；
Light polarizing film is set on the optical compensation films.
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 strip structure
Twice of height in said 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 uniaxial A- compensation film,
The first refractive index is the normal refractive index of the positivity uniaxial A- compensation film, and the positivity uniaxial A- compensation film includes
The optical axis of nematic liquid crystal molecule, the nematic liquid crystal molecule is parallel to the incidence surface.
7. polarizer as described in claim 1, which is characterized in that the optical compensation films are negativity uniaxial C- compensation film,
Second refractive index is the normal refractive index of the negativity uniaxial C- compensation film, and the negativity uniaxial C- compensation film includes
Smectic, the optical axis of the smectic is perpendicular to the incidence surface.
8. a kind of polarizer characterized by comprising
Protective film is supported, for the support protective film with first refractive index, the support protective film includes incidence surface and light-emitting surface,
And the light-emitting surface is equipped with multiple bulge-structures with preset shape, at least partly surface of the bulge-structure is circular arc
It is acute angle that curved surface, the circular arc camber and the incidence surface, which are formed by angle,；
Optical compensation films are formed in the light-emitting surface of the support protective film, and the optical compensation films have the second refractive index, described
First refractive index is greater than second refractive index, and the optical compensation films offer on the face contacted with the support protective film
Multiple grooves all the same with the bulge-structure shape, size；
The optical compensation films are positivity uniaxial A- compensation film, and the first refractive index is the positivity uniaxial A- compensation film
Normal refractive index, the positivity uniaxial A- compensation film include nematic liquid crystal molecule, the light of the nematic liquid crystal molecule
Axis is parallel to the incidence surface；
Light polarizing film is set on the optical compensation films.
9. a kind of display panel, which is characterized in that including polarizer as claimed in any one of claims 1 to 8.
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 is display panel as claimed in claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161580.7A CN109143445A (en) | 2018-09-30 | 2018-09-30 | polarizing plate, display panel and display device |
| PCT/CN2018/120015 WO2020062591A1 (en) | 2018-09-30 | 2018-12-10 | Polarizing plate and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161580.7A CN109143445A (en) | 2018-09-30 | 2018-09-30 | polarizing plate, display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109143445A true CN109143445A (en) | 2019-01-04 |
Family
ID=64810584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811161580.7A Pending CN109143445A (en) | 2018-09-30 | 2018-09-30 | polarizing plate, display panel and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109143445A (en) |
| WO (1) | WO2020062591A1 (en) |
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| WO2023070751A1 (en) * | 2021-11-01 | 2023-05-04 | 深圳市华星光电半导体显示技术有限公司 | Optical diaphragm and display device |
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| WO2020062591A1 (en) | 2020-04-02 |
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