CN109143673A - Structure of polarized light, display panel and display device - Google Patents
Structure of polarized light, display panel and display device Download PDFInfo
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- CN109143673A CN109143673A CN201811161887.7A CN201811161887A CN109143673A CN 109143673 A CN109143673 A CN 109143673A CN 201811161887 A CN201811161887 A CN 201811161887A CN 109143673 A CN109143673 A CN 109143673A
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- light
- optical compensation
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- 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)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
This application involves a kind of structure of polarized light, comprising: light polarizing film；It supports protective film, including incidence surface and light-emitting surface, the incidence surface to contact with the light polarizing film, offers multiple grooves with preset shape on the light-emitting surface of the support protective film, the angle between the side of the groove and the incidence surface is acute angle；Optical compensation films, the optical compensation films are formed on the light-emitting surface of the support protective film；The first refractive index of the optical compensation films is greater than the second refractive index of the support protective film；The optical compensation films offer multiple bulge-structures matched with the groove shapes, size on the face contacted with the support protective film.The application can be such that vertical incidence to the light of optical compensation films reflects by the way that optical compensation films are arranged, so that the light energy at positive visual angle is assigned to side view angle to solve the problems, such as colour cast.Since entire structure of polarized light does not use additional metal routing, therefore there is no the transmissivity problems for influencing light.
Description
Technical field
This application involves field of display technology, more particularly to a kind of structure of polarized light, display panel and display device.
Background technique
With the development of display technology, liquid crystal display device is extensive because having many advantages, such as that high image quality, power saving, fuselage are thin
Using, wherein the quality of image quality is to influence the most important factor of consumer experience.Liquid crystal display device is generally by backlight module
It is constituted with the display panel being placed on backlight module, backlight module provides incident light for display panel, which is usually to collect
Middle vertical incidence can obtain preferable display image quality to display panel, therefore when positive apparent direction watches display screen, but in side
When apparent direction watches display screen, image quality is poor, and colour cast is than more serious, so that the visual angle normally shown is smaller.Currently, display panel
Type may include LCD (Thin Film Transistor Liquid Crystal Displayer, thin film transistor (TFT) liquid
Crystal display) 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, wherein LCD includes VA (Vertical Alignment, vertically aligned), IPS (In-Plane
Switching, plane conversion type), TN (Twisted Nematic, twisted nematic) etc., by taking VA as an example, in VA liquid crystal
It uses in (Vertical Alignment liquid crystal, homeotropic alignment liquid crystal) display by the sub- picture in optical filter
Element is again divided into the means of multiple sub-pixels to improve the image quality at side view angle, to expand visual angle.But this method needs
More TFT (Thin Film Transistor, thin film transistor (TFT)) elements drive sub-pixel, certainly will so increase in panel
The metal routing in portion causes the region of light-permeable to become smaller, and influences the light transmittance of panel, influences image quality.And if in order to guarantee light
Degree then needs the performance for improving backlight module, so that it is generated the incident light of more high brightness, so will increase backlight cost again.
Summary of the invention
Based on this, it is necessary to for the problems such as display device display view angle is small, side view image quality is poor, higher cost, provide
A kind of structure of polarized light, display panel and display device.
A kind of structure of polarized light, comprising:
Light polarizing film；
Protective film, including incidence surface and light-emitting surface, the incidence surface is supported to contact with the light polarizing film, the support protection
Multiple grooves with preset shape, the angle between the side of the groove and the incidence surface are offered on the light-emitting surface of film
For acute angle；
Optical compensation films, the optical compensation films are formed on the light-emitting surface of the support protective film；The optical compensation
The first refractive index of film is greater than the second refractive index of the support protective film；The optical compensation films with the support protective film
Multiple bulge-structures matched with the groove shapes, size are offered on the face of contact.
Above-mentioned structure of polarized light has the optical compensation films of preset shape bulge-structure by being arranged, while according to itself and 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, due to entire structure of polarized light
Additional metal routing is not used, so there is no the transmissivity for influencing light, and then the problem of influence image quality.
The optical compensation films are positivity uniaxial compensation film in one of the embodiments, and the first refractive index is
The abnormal refraction rate of the positivity uniaxial compensation film, the positivity uniaxial compensation film includes nematic liquid crystal molecule, described
The optical axis of nematic liquid crystal molecule is parallel to the incidence surface.
The optical compensation films are negativity uniaxial compensation film in one of the embodiments, and the first refractive index is
The normal refractive index of the negativity uniaxial compensation film, the negativity uniaxial compensation film include smectic, the dish
The optical axis of shape liquid crystal molecule is perpendicular to the incidence surface.
The bulge-structure is V-arrangement strip projected parts structure, multiple V-arrangement strip projected parts in one of the embodiments,
It is parallel to each other between structure.
The bulge-structure is triangular pyramid bulge-structure, multiple triangular pyramid protrusion knots in one of the embodiments,
Structure is distributed on the face for supporting protective film to contact in two-dimensional matrix array in the optical compensation films.
The distance of the adjacent bulge-structure in a first direction is greater than or equal to described in one of the embodiments,
The length of bulge-structure in said first direction；Wherein, the face contacted with the optical compensation films with the support protective film
On perpendicular to the V-arrangement strip projected parts structure extending direction direction be first direction.
The face that the optical compensation films are contacted with the support protective film in one of the embodiments, is rectangle, adjacent
Triangular pyramid bulge-structure distance in a first direction be greater than or equal to the triangular pyramid bulge-structure described first
Length on direction；
The distance of the adjacent triangular pyramid bulge-structure in a second direction is greater than or equal to the triangular pyramid protrusion knot
The length of structure in this second direction；Wherein, long with the rectangle using the extending direction of the rectangle width as first direction
The extending direction of degree is second direction.
A kind of structure of polarized light, comprising:
Light polarizing film；
Protective film, including incidence surface and light-emitting surface, the incidence surface is supported to contact with the light polarizing film, the support protection
Offer multiple grooves with triangular pyramid on the light-emitting surface of film, the side of the triangular pyramid groove and the incidence surface it
Between angle be acute angle；
Optical compensation films, the optical compensation films are formed on the light-emitting surface of the support protective film；The optical compensation
The first refractive index of film is greater than the second refractive index of the support protective film；The optical compensation films with the support protective film
Multiple triangular pyramid bulge-structures matched with the triangular pyramid groove shapes, size are offered on the face of contact；It is described
Optical compensation films are positivity uniaxial compensation film, and the first refractive index is the abnormal refraction of the positivity uniaxial compensation film
Rate, the positivity uniaxial compensation film include nematic liquid crystal molecule, and the optical axis of the nematic liquid crystal molecule is parallel to described
Incidence surface.
A kind of display panel, including the aforementioned structure of polarized light.
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 composition schematic diagram of the structure of polarized light in an embodiment；
Fig. 2 is the structural schematic diagram of the optical compensation films in Fig. 1；
Fig. 3 is the structural schematic diagram of the optical compensation films in an embodiment；
Fig. 4 is the structural schematic diagram of the optical compensation films in another embodiment；
Fig. 5 is the oblique view of the optical compensation films in an embodiment；
Fig. 6 is the oblique view of the optical compensation films in another embodiment；
Fig. 7 is the composition schematic diagram of the display panel in an embodiment；
Fig. 8 is the composition schematic diagram of the display device in an embodiment；
Fig. 9 is the composition schematic diagram of the structure of polarized light in another 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 better embodiment of the application.But the application can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more disclosure of this application
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
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.
Liquid crystal display device is generally made of backlight module and the display panel being placed on backlight module, and backlight module is aobvious
Show that panel provides incident light, the incident light usually concentration vertical incidence to display panel, therefore watches and showing in positive apparent direction
When screen, preferable display image quality can be obtained, but when side-looking direction watches display screen, image quality is poor, colour cast makes than more serious
It is smaller to obtain the visual angle normally shown.
Fig. 1 is please referred to, is the composition schematic diagram of the structure of polarized light in an embodiment.Auxiliary is refering to Fig. 2 simultaneously.A kind of polarisation
Structure may include: light polarizing film 10, support protective film 20 and optical compensation films 30.Wherein, support protective film 20 includes incidence surface
And light-emitting surface, incidence surface are the one side for receiving incident light, the incidence surface of support protective film 20 is contacted with light polarizing film 10, and light is from entering
Smooth surface enters support protective film 20 and projects from light-emitting surface.Optical compensation films 30 are formed on the light-emitting surface of support protective film 20,
The first refractive index of optical compensation films 30 is greater than the second refractive index of support protective film 20.Support protective film 20 with optical compensation
Multiple grooves 210 with preset shape, the angle between the side and incidence surface of groove 210 are offered on the face that film 30 contacts
It is acute angle for α, α, meets 0 ° of 90 ° of < α <.Optical compensation films 30 on the face that contact of support protective film 20 equipped with it is multiple with it is recessed
The bulge-structure 310 that 210 shape of slot, size match.I.e. support protective film 20 and optical compensation films 30 can pass through bulge-structure
310 and groove 210 realize complete fitting.Optical compensation films 30 have first refractive index n1, and support protective film 20 has the second folding
Rate n2 is penetrated, first refractive index n1 is greater than the second refractive index n2.When light, which penetrates support protective film 20, enters optical compensation films 30, it is
Enter light substantia compacta from light thinning medium, therefore can be reflected in support protective film 20 and the contact interface of optical compensation films 30.Aobvious
In showing device, since most light are vertical incidence into polarizer, i.e., most light are perpendicular to incidence surface, we
Case is by the support protective film 20 and optical compensation films 30 of setting different refractivity and in optical compensation films 30 and support protective film
Bulge-structure 310 is set in the one side of 20 contacts, when vertical incidence light is incident to optical compensation films 30 from support protective film 20, knot
The surface characteristics of bulge-structure 310 is closed, can be reflected on the surface of bulge-structure 310, the propagation road of vertical incidence light is changed
Diameter 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.
Above-described embodiment, due to being equipped with the optical compensation films with bulge-structure, and first refractive index is greater than the second refraction
It when rate, i.e. light are incident to optical compensation films from the light-emitting surface of support protective film, is entered in light substantia compacta from light thinning medium, therefore it can be
Refraction effect occurs for the contact interface of two membranes, and light is made to deflect.In the present solution, optical compensation films connect with support protective film
Touching is formed with bulge-structure on one side, and the side of the bulge-structure and incidence surface formation angle are acute angle, and vertical incidence light enters
After optical compensation films, in the incidence angle that the surface of bulge-structure is formed less than 90 °, therefore refraction effect occurs, make vertical incidence
Light deflect, so that positive visual angle energy be made to be assigned to side view angle, improve the image quality at side view angle.Further, due to whole
A structure of polarized light does not use additional metal routing, so there is no the transmissivities for influencing light, and then influences asking for image quality
Topic.
In one embodiment, please continue to refer to Fig. 1, the face that optical compensation films 30 are contacted with support protective film 20 is equipped with
Multiple bulge-structures 310.Multiple bulge-structures 310 are V-arrangement strip projected parts structure, it is understood that it is triangular prism strip structure,
It is parallel to each other between multiple triangular prism strip structures.One side of triangular prism strip structure and optical compensation films 30 and support are protected
The face contact that cuticula 20 contacts, optical compensation films 30 and the support contact surface of protective film 20 i.e. entering for optical compensation films 30
Smooth surface.It is formed with certain angle between other two side and the incidence surface of optical compensation films 30, that is to say the α in Fig. 1.By
The angle formed between the side and incidence surface of the groove 210 of support protective film 20 is acute angle, so β is acute angle, correspondingly,
The angle α formed between the side and incidence surface of bulge-structure 310 is also acute angle, while bulge-structure 310 and 210 shape of groove
Shape, size match, so α=β here.Further, the first of β it is optional may range from 0 ° < β < 90 °, second is optional
It may range from 15 ° < β < 75 °.The first of α be optional to may range from 0 ° < α < 90 °, second it is optional may range from 15 ° < α <
75°.Certain angle will be provided between the side and incidence surface of bulge-structure 310 can to pass through side in incident light
When be easier that refraction effect occurs so that the light energy at positive visual angle more diffuses to side view angle, improve the picture of side view angle
Matter.As shown in figure 4, multiple bulge-structures 310 can be on the incidence surface of optical compensation films 30 and be distributed in two-dimensional matrix array.
And bulge-structure 310 is triangular pyramid protrusion, it will be understood that when bulge-structure 310 is triangular pyramid protrusion, can be had
There is cross section identical with triangular prism strip structure.The bottom surface of triangular pyramid is contacted with the incidence surface of optical compensation films 30, remaining side
Shape is at a certain angle between face and the incidence surface of optical compensation films 30.Due to having the same transversal with triangular prism strip structure
Face, so, angle here that is to say the β in Fig. 1.Due between the side and incidence surface of the groove 210 of support protective film 20
The angle of formation is acute angle, so β is acute angle, correspondingly, the angle α formed between the side and incidence surface of bulge-structure 310
It also is acute angle, while bulge-structure 310 is matched with 210 shape of groove, size, so α=β here.When bulge-structure 310
When being triangular prism strip projected parts structure and being arranged side by side, is only reflected in one-dimensional square, make divergence of beam to triangular prism
Inclined-plane two sides；It, can be in two-dimensional surface when bulge-structure 310 is triangular pyramid and multiple triangular pyramids are in two-dimensional matrix array
It is interior to reflect, make divergence of beam to all angles of two-dimensional surface, to make each visual angle that preferable image quality can be presented.
As shown in connection with fig. 2, when light R0, which vertically penetrates support protective film 20, enters optical compensation films 30, vertical incidence light
Incidence angle at 310 surface of bulge-structure is γ, 0 90 ° of < γ <, therefore light can reflect, refraction angle θ, due to
Light is to enter the optical compensation films 30 with the second refractive index from the support protective film 20 (light thinning medium) with first refractive index
(light substantia compacta), so γ is greater than θ, i.e. light propagation path changes, and light R1 deviates original normally incident direction, to side
Diverging, therefore have more light and inject side, improve the image quality of side view angle.It should be understood that first refractive index n1 with
The difference of second refractive index n2 is bigger, and refraction angle when reflecting is bigger, and the easier light type energy that will face is assigned to greatly
Visual angle.In one embodiment, the value range of first refractive index n1 is 1.0 < n1 < 2.5, the value range of the second refractive index n2
For 1.0 < n1 < 2.5.In one embodiment, if the optional value range of m=n1-n2, m are 0.01 < m < 2.
As shown in Fig. 2, referring concurrently to Fig. 5.It is triangular prism strip structure (V-arrangement in the bulge-structure 310 of optical compensation films 30
Strip projected parts structure) when, it is convex that the spacing between adjacent triangular prism protrusion in a first direction is greater than or equal to triangular prism
Play length in a first direction.Here, perpendicular to triangular prism on the face contacted with optical compensation films 30 with support protective film 20
The extending direction of strip projected parts structure is first direction, it is understood that for along the extending direction of X-axis.Optical compensation films 30 and branch
Supportting the face that protective film 20 contacts can be rectangle.Triangular prism can be regular triangular prism, may not be regular triangular prism；Multiple trigones
The size of column can be identical, can not also be identical.Multiple triangular prism bulge-structures 310 are in optical compensation films 30 and support protective film
It is parallel to each other on the face of 20 contacts.As shown in Fig. 2, Px is adjacent the distance between triangular prism strip structure, Lx is triangular prism
The length of strip structure in a first direction, Px, Lx meet: Px >=Lx.
Similarly, identical as triangular prism protrusion due to can have when bulge-structure 310 is triangular pyramid bulge-structure
Cross section, so, herein can be referring concurrently to Fig. 2 and Fig. 5, adjacent triangular pyramid bulge-structure 310 is in a first direction
Distance is greater than or equal to the length of triangular pyramid bulge-structure 310 in a first direction；Adjacent triangular pyramid bulge-structure 310 is
Distance on two directions is greater than or equal to the length in a second direction of triangular pyramid bulge-structure 310 and is less than or equal to visible
The wavelength X of light, the wavelength X of visible light is optionally 300nm~1000nm here.Wherein, due to optical compensation films 30 and support
The face that protective film 20 contacts is rectangle, therefore, using the extending direction of rectangle width as first direction, it is understood that for along X-axis
Extending direction；Using the extending direction of rectangle length as second direction, it is to be understood that for along the extending direction of Y-axis.Triangular prism
Can be positive triangular pyramid, may not be positive triangular pyramid, and the size of multiple triangular pyramids can be identical, can not also be identical.It can be with
Understand, in the case where not departing from the central principle of the application can shape, size, size to groove be changed to adapt to
The actual needs of those skilled in the art.As shown in fig. 6, Px be adjacent triangular pyramid bulge-structure 310 in a first direction
Distance；Py is the distance of adjacent triangular pyramid bulge-structure 310 in a second direction；Lx is triangular pyramid bulge-structure 310 the
Length on one direction；Ly is the length of triangular pyramid bulge-structure 310 in a second direction.Adjacent triangular pyramid bulge-structure
310 distance Px in a first direction and distance Py in a second direction can be equal, can also be unequal.Px,Py,Lx,
Ly meets: Px >=Lx；Py≥Ly.As Px > Lx, Py > Ly, there is interval, i.e. bulge-structure 310 in adjacent protrusion structure 310
It is distributed in two-dimensional matrix array, when light travels to light substantia compacta from light thinning medium, so that it may make vertical incidence light by interval and protrusion
It is dissipated towards side, will further face light energy and be assigned to side view angle, and improve the image quality at side view angle.
It further, can also be in two-dimensional matrix between multiple V-arrangement strip projected parts structures when bulge-structure is V-arrangement strip
Array distribution, the arrangement mode in two dimension are referred to the description of front triangular pyramid bulge-structure, herein not further
It repeats.It is spaced between adjacent protrusion structure due to existing, so protrusion knot is distributed in two-dimensional matrix array, light is propagated from light thinning medium
When to light substantia compacta, so that it may dissipate vertical incidence light towards side by interval and protrusion, will further face light energy distribution
To side view angle, the image quality at side view angle is improved.
Support protective film 20 can include but is not limited to polyethylene terephthalate film, three cellulose acetate membrane or poly-
Any one in methyl methacrylate film.PET (Polyethylene terephthalate, the modeling of poly terephthalic acid class
Material) there is good optical property and weatherability, amorphous PET plastic has good optical transparence.In addition PET plastic
With excellent abrasion performance frictional property and dimensional stability and electrical insulating property.(Triacetyl Cellulose, three acetic acid are fine by TAC
Dimension element), mainly for the protection of LCD polarizer.PMMA (Polymethyl Methacrylate, polymethyl methacrylate), tool
There are good chemical stability and weatherability.Simultaneously as protective film 30 plays the role of support and protects light polarizing film 10, so
30 thickness of protective film should be ensured that the weatherability of light polarizing film 10 is unaffected, protects light polarizing film 10 not contact external environment, prevents
Moisture enters light polarizing film 10.
Optical compensation films 30 are that the transparent or semitransparent material of light-permeable is made and has the function of the monochromatic light of phase compensation
Axis optical compensation films are filled with liquid crystal in one embodiment in optical compensation films 30, liquid crystal is birefringent material, and light enters
Two light of normal light and unusual light can be reflected into when liquid crystal, wherein the refractive index of normal light is normal refractive index, unusual light
Refractive index is abnormal refraction rate, and abnormal refraction rate direction is the direction of an electric field direction parallel with liquid crystal optic axis, normal refractive index side
To the direction vertical with liquid crystal optic axis for electric field, abnormal refraction rate direction is vertical with normal refractive index direction.In the present embodiment,
Optical compensation films 30 can be negativity uniaxial compensation film, be specifically as follows negativity uniaxial C- compensation film, negativity uniaxial C-
The normal refractive index of compensation film is parallel to all directions of light-emitting surface.Disc-like liquid crystal point can be filled inside negativity single shaft C- compensation film
Son, smectic are the liquid crystal of plate shape, and the optical axis of disc-like liquid crystal is vertical with incidence surface, the abnormal refraction of disc-like liquid crystal
The direction rate nce (extraordinary refractive index) is parallel with the optical axis of disc-like liquid crystal, disc-like liquid crystal it is normal
The direction (ordinary refractive index) refractive index nco is perpendicular to abnormal refraction rate nce (extraordinary
Refractive index) direction, i.e. the normal refractive index nco of disc-like liquid crystal is oriented parallel to incidence surface, and nco > nce.Light
Learning compensation film 30 can also be positivity uniaxial compensation film, be specifically as follows positivity uniaxial A- compensation film, equally have anti-
Normal refractive index and normal refractive index；Nematic liquid crystal molecule, nematic liquid crystal point can be filled inside positivity uniaxial A- compensation film
Son is the rodlike type liquid crystal of strip, and the optical axis of nematic liquid crystal is parallel with incidence surface, the direction abnormal refraction rate nae of nematic liquid crystal
Parallel with the optical axis of nematic liquid crystal, i.e. the direction abnormal refraction rate nae of nematic liquid crystal is parallel with incidence surface, nematic liquid crystal
The direction normal refractive index nao perpendicular to the direction abnormal refraction rate nae, and nae > nao；In the present embodiment, in optical compensation
When film 30 is negativity uniaxial C- compensation film, first refractive index is the normal refractive index nco of negativity uniaxial C- compensation film,
When optical compensation films 30 are positivity uniaxial A- compensation film, first refractive index is the abnormal refraction of positivity uniaxial A- compensation film
The direction of rate nae, nae and the direction of nco are each parallel to incidence surface.
In one embodiment, please assist refering to Fig. 3, resin particle 50 can also be adulterated in optical compensation films 30 so that
Optical compensation films 30 have the function of combating vertigo, specific doping concentration the application are not particularly limited, with this field skill
Art personnel know and common doping concentration.
In one embodiment, it please assist refering to Fig. 4, one layer of light can also be coated on the light-emitting surface of optical compensation films 30
Film is learned so that optical compensation films 30 have the function of antireflection, it is not special for thickness the application of the optical thin film of coating
Limitation, with known to those skilled in the art and common thickness.
Further, the second refractive index for supporting protective film 20 can be 1.0-2.5, and the second refractive index here is namely
Normal refractive index (ordinary refractive index), can be indicated with np.The first refractive index of optical compensation films 30 is big
In the normal refractive index (the second refractive index) of support protective film 20.In other words, 20 opposing optical compensation film 30 of protective film is supported
For be optically thinner medium, be optically denser medium for the opposite support protective film 20 of optical compensation films 30.Specifically, optical compensation films 30
First refractive index and support protective film 20 normal refractive index difference range be optionally 0.01-2.Theoretically, optical compensation
The first refractive index of film 30 is bigger relative to the normal refractive index difference of support protective film 20, when incident light impinges perpendicularly on optics
When refraction effect occurs in compensation film 30, the easier light energy by positive visual angle is assigned to side view angle.
Light polarizing film 10 has absorption axiss and penetrating shaft, and the polarization direction polarization luminous energy parallel with penetrating shaft passes through light polarizing film.
In one embodiment, it is influenced to reduce optical compensation films to the polarization of light, the optical axis (liquid crystal light of optical compensation films can be made
Axis) it is parallel with the penetrating shaft of light polarizing film, polarization direction of the incident light after optical compensation films is parallel with the penetrating shaft of polarizing coating,
Therefore polarizing coating can be passed completely through.In the present solution, being mended since optical compensation films also have the function of phase compensation using optics
Film is repaid in addition to incident light can be made to deflect in interface to expand visual angle, enhances outside the image quality of side view angle, phase can also be played
The effect of 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, mainly plays a part of to absorb and penetrate to polarised light, light polarizing film 10 chooses current city in the application
Common product on face, penetrating shaft are parallel to 90/270 degree of direction, and absorption axiss are parallel to 0/180 degree of direction.It usually need to be
One layer of Triafol T support membrane is arranged in the two sides of polaroid, and Triafol T support membrane has high light transmittance, water resistance
Well and there is certain mechanical strength, polaroid can be protected.In the present embodiment, since the side in polaroid is equipped with
Protective film 20 and optical compensation films 30 are supported, protective film 20 and optical compensation films 30 is supported both to can be carried out phase compensation and to light
It is deflected, can also act as protective layer to protect light polarizing film.It should be noted that the thickness and optics of support protective film 20 are mended
The thickness (i.e. D+d in Fig. 2) for repaying film 30 need to meet suitable thickness to realize the protective effect to light polarizing film.
In one embodiment, referring to Fig. 9, structure of polarized light can also include the phase benefit for being set to 10 lower section of light polarizing film
Repay film 40, can for optical compensation films 30 have identical material, should be guaranteed that here phase compensation film 40, light polarizing film 10,
The integral thickness of support protective film 20 and optical compensation films 30 makes the weatherability of light polarizing film unaffected, protects light polarizing film 10
External environment is not contacted, prevents moisture from entering light polarizing film 10.
Structure of polarized light can also include pressure sensitive adhesive 50, be set to below phase compensation film, be mainly used for structure of polarized light
It is bonded with other assemblies.
A kind of structure of polarized light is also provided, structure of polarized light may include: light polarizing film；Support protective film, including incidence surface and go out
Smooth surface supports the incidence surface of protective film to contact with light polarizing film, support offered on the light-emitting surface of protective film it is multiple have triangular pyramid
The groove of shape, the angle between the side and incidence surface of triangular pyramid groove is acute angle；Optical compensation films, optical compensation films are formed
In on the light-emitting surface of support protective film；The first refractive index of optical compensation films is greater than the second refractive index of support protective film；Optics
Compensation film offers multiple triangular pyramids matched with triangular pyramid groove shapes, size on the face contacted with support protective film
Shape bulge-structure, optical compensation films are positivity uniaxial compensation film, and first refractive index is the unusual folding of positivity uniaxial compensation film
Rate is penetrated, positivity uniaxial compensation film includes nematic liquid crystal molecule, and the optical axis of nematic liquid crystal molecule is parallel to incidence surface.
Above-described embodiment, by being arranged the bulge-structure of multiple triangular pyramids in optical compensation films, 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, due to entire structure of polarized light
Additional metal routing is not used, 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.This sentences display panel
It is illustrated for LCD display panel, as shown in fig. 7, the display panel may 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
Line 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 upper polarizer
1000 be the structure of polarized light of aforementioned structure of polarized light embodiment introduction.Upper polarizer 1000 may include light polarizing film 10, support protection
Film 20, support protective film 20 includes incidence surface and light-emitting surface, and incidence surface is contacted with light polarizing film 10, and optical compensation is formed on light-emitting surface
Film 30.Support protective film 20 that there is the second refractive index, optical compensation films 30 have first refractive index, and first refractive index is greater than second
Refractive index, and support and offer multiple grooves 210 with preset shape, the side of groove 210 and incidence surface on protective film 20
Between angle be acute angle；Optical compensation films 30 offer multiple and 210 shape of groove on the face contacted with support protective film 20
The bulge-structure 310 that shape, size match.It can also include phase compensation film 40, phase compensation film 40 is formed in light polarizing film 10
Lower section.Light is incident to the light polarizing film 10 from upper polarizer 1000 from upper polarizer 1000, and penetrates support protective film 20
Into optical compensation films 30, optical compensation films 30 can carry out phase compensation to incident ray.Since light enters from light thinning medium
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
Incident light is assigned to side view angle to side view angular deflection, by positive visual angle energy, improves the image quality at side view angle.Wherein, structure of polarized light
Specific structure is being described in detail above, and details are not described herein again.
To sum up, in combination with Fig. 1, Fig. 2, to support the groove 210 of protective film 20 for V-arrangement strip groove, optical compensation films
30 be negativity uniaxial C- compensation film, and the bulge-structure 310 of optical compensation films 30 is V-arrangement strip projected parts, the penetrating shaft of light polarizing film
Be parallel to 90/270 ° of direction, absorption axiss are to sketch the visual angle of the application for being parallel to 0/180 ° of direction to improve principle: light into
Lower polarizer 2000 is first passed through before entering display panel, then by upper polarizer 1000, upper polarizer 1000 has polarised light
The effect with penetrating is absorbed, light can be divided into horizontal polarization with the light of vertical polarisation component after entering upper polarizer 1000.Due to this
In the penetrating shaft of light polarizing film 10 that uses be parallel 90/270 ° of direction, therefore the light for only focusing on vertical polarisation component here passes through
Medium interface.(horizontal polarization light is by light polarizing film by 90/270 ° of direction of penetrating shaft of light polarizing film 10 for the light of vertical polarisation component
10 0/180 ° of absorption axiss directions absorb), it is nco (ordinary in the corresponding equivalent refractive index of negativity uniaxial C- compensation film
Refractive index, normal refractive index), it is np, vertical polarisation component in the support corresponding equivalent refractive index of protective film 20
Light by support protective film 20 after by the negativity uniaxial C- compensation film (refraction corresponding to negativity uniaxial C-- compensation film
Rate is nco), therefore the light of the vertical polarization occurs at two media contact faces (i.e. V-arrangement strip projected parts in Fig. 2) from optically thinner medium
Into the behavior of optically denser medium (nco > np), formed between the bulge-structure 310 and incidence surface of cooperation optical compensation films 30 sharp
Angle generates refraction effect, forms the optical phenomena that positive visual angle light type energy distributes big visual angle.Can also with to pass through above-mentioned principle real
The light energy at positive visual angle is now assigned to side view angle, improves colour cast problem.
Similarly, when the penetrating shaft of the light polarizing film 10 used is to be parallel to 0/180 ° of direction, therefore only focus on here horizontal inclined
The medium interface that the light of vibration component passes through.The light R0 of horizontal polarisation component is in the corresponding equivalent refraction of negativity uniaxial C- compensation film
Rate is nco (ordinary refractive index, normal refractive index), is np in the equivalent refractive index of support protective film 20,
The light of horizontal polarisation component by negativity uniaxial C- compensation film after support protective film 20 by (corresponding to negativity uniaxial C- to mend
The refractive index for repaying film is nco), therefore the light of the horizontal polarization occurs at two media contact faces (i.e. V-arrangement strip projected parts in Fig. 2)
Enter the behavior of optically denser medium (nco > np) from optically thinner medium, cooperate optical compensation films 30 bulge-structure 310 and incidence surface it
Between the acute angle that is formed generate refraction effect and generate emergent light R1, form the optical phenomena that positive visual angle light type energy distributes big visual angle.
To which the light energy at positive visual angle is assigned to side view angle, improve colour cast problem.
Fig. 8 is please referred to, is the composition schematic diagram of the display device in an embodiment.The application, which is also disclosed, shows altogether dress
It sets, including backlight module 5 and the display panel being placed in above backlight module 1, wherein display panel 1 is previous embodiment Jie
The display panel to continue.Backlight module 5 is for providing incident light R0 (Fig. 8 is not indicated), and incident light R0 is concentrated on and vertical direction
In display panel 1 is incident in the range of low-angle, which is smaller than 30 °, most of light that display panel 1 receives
For vertical incidence light, due to there are support protective film 20 and optical compensation films 30 in display panel 1 and optical compensation films 30 and branch
It supports the face that protective film 20 contacts and is equipped with multiple bulge-structures 310 with preset shape, pass through refraction on 310 surface of bulge-structure
Vertical incidence light can be carried out to deflection and generate emergent light R1 (Fig. 8 is not indicated), so that side view will be assigned to positive visual angle energy
The image quality at side view angle is improved at angle.The structure of display panel and the structure of the polarizer in display panel are being described above, this
Place repeats no more.Wherein, backlight module 5 may include side entering type LED light source 51, reflector plate 52, light guide plate 53.Light guide plate 53
Upper and lower surface is equipped with strip V-groove, and the side wall of 53 lower surface V-groove of light guide plate is parallel with side entering type light source 51, light guide plate 53
The V-groove of upper surface 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 structure of polarized light, which is characterized in that the structure of polarized light includes:
Light polarizing film；
Protective film, including incidence surface and light-emitting surface, the incidence surface is supported to contact with the light polarizing film, the support protective film
Multiple grooves with preset shape are offered on light-emitting surface, the angle between the side of the groove and the incidence surface is sharp
Angle；
Optical compensation films, the optical compensation films are formed on the light-emitting surface of the support protective film；The optical compensation films
First refractive index is greater than the second refractive index of the support protective film；The optical compensation films are contacted with the support protective film
Face on offer multiple bulge-structures matched with the groove shapes, size.
2. structure of polarized light according to claim 1, which is characterized in that the optical compensation films are the compensation of positivity uniaxial
Film, the first refractive index are the abnormal refraction rate of the positivity uniaxial compensation film, and the positivity uniaxial compensation film includes
The optical axis of nematic liquid crystal molecule, the nematic liquid crystal molecule is parallel to the incidence surface.
3. structure of polarized light according to claim 1, which is characterized in that the optical compensation films are the compensation of negativity uniaxial
Film, the first refractive index are the normal refractive index of the negativity uniaxial compensation film, and the negativity uniaxial compensation film includes
Smectic, the optical axis of the smectic is perpendicular to the incidence surface.
4. structure of polarized light according to claim 1, which is characterized in that the bulge-structure is V-arrangement strip projected parts structure, more
It is parallel to each other between a V-arrangement strip projected parts structure.
5. structure of polarized light according to claim 1, which is characterized in that the bulge-structure is triangular pyramid bulge-structure, more
A triangular pyramid bulge-structure is in being in two-dimensional matrix array on the optical compensation films and the face that contact of support protective film
Distribution.
6. structure of polarized light according to claim 4, which is characterized in that the adjacent bulge-structure is in a first direction
Distance is greater than or equal to the length of the bulge-structure in said first direction；Wherein, with the optical compensation films with it is described
Supporting the direction on the face of protective film contact perpendicular to the extending direction of the V-arrangement strip projected parts structure is first direction.
7. structure of polarized light according to claim 5, which is characterized in that the optical compensation films connect with the support protective film
The face of touching is rectangle, and it is convex that the distance of the adjacent triangular pyramid bulge-structure in a first direction is greater than or equal to the triangular pyramid
Play the length of structure in said first direction；
The distance of the adjacent triangular pyramid bulge-structure in a second direction is greater than or equal to the triangular pyramid bulge-structure and exists
Length in the second direction；Wherein, using the extending direction of the rectangle width as first direction, with the rectangle length
Extending direction is second direction.
8. a kind of structure of polarized light, which is characterized in that the structure of polarized light includes:
Light polarizing film；
Protective film, including incidence surface and light-emitting surface, the incidence surface is supported to contact with the light polarizing film, the support protective film
Multiple grooves with triangular pyramid are offered on light-emitting surface, between the side and the incidence surface of the triangular pyramid groove
Angle is acute angle；
Optical compensation films, the optical compensation films are formed on the light-emitting surface of the support protective film；The optical compensation films
First refractive index is greater than the second refractive index of the support protective film；The optical compensation films are contacted with the support protective film
Face on offer multiple triangular pyramid bulge-structures matched with the triangular pyramid groove shapes, size；The optics
Compensation film is positivity uniaxial compensation film, and the first refractive index is the abnormal refraction rate of the positivity uniaxial compensation film, institute
Stating positivity uniaxial compensation film includes nematic liquid crystal molecule, the optical axis of the nematic liquid crystal molecule be parallel to it is described enter light
Face.
9. a kind of display panel, which is characterized in that including such as described in any item structure of polarized light of claim 1-8.
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 |
|---|---|---|---|
| CN201811161887.7A CN109143673A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light, display panel and display device |
| PCT/CN2018/120036 WO2020062593A1 (en) | 2018-09-30 | 2018-12-10 | Polarizing structure and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161887.7A CN109143673A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light, display panel and display device |
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| CN109143673A true CN109143673A (en) | 2019-01-04 |
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| CN201811161887.7A Pending CN109143673A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light, display panel and display device |
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| WO (1) | WO2020062593A1 (en) |
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| WO2020062593A1 (en) | 2020-04-02 |
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