CN109143444A - 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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- CN109143444A CN109143444A CN201811161577.5A CN201811161577A CN109143444A CN 109143444 A CN109143444 A CN 109143444A CN 201811161577 A CN201811161577 A CN 201811161577A CN 109143444 A CN109143444 A CN 109143444A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—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 including organic materials, e.g. polymeric layers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- 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 invention relates to a kind of structure of polarized light, including light polarizing film, light polarizing film includes incidence surface and the light-emitting surface opposite with incidence surface；First optical compensation films, on the light-emitting surface of light polarizing film, first optical compensation films have first refractive index, and the first optical compensation films are formed with bulge-structure away from light polarizing film light-emitting surface on one side, and it is acute angle that bulge-structure at least partly surface and incidence surface, which are formed by angle,；Second optical compensation films fit in the one side on the first optical compensation films with bulge-structure, and the second optical compensation films have the second refractive index, and first refractive index is greater than the second refractive index.By the way that the optical compensation films of different refractivity are arranged, vertical incidence to the light of display panel can be made to reflect, improve side view angle image quality.The invention further relates to another structure of polarized light and a kind of display panels and display device comprising structure of polarized light.
Description
Technical field
The present invention relates to display fields, more particularly to a kind of structure of polarized light, 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.Display device is generally by carrying on the back
Optical mode group and the display panel being placed on backlight module are constituted, and backlight module provides incident light for display panel, and the incident light is logical
Be often concentrate vertical incidence to display panel, therefore when positive apparent direction watches display screen, preferable display image quality can be obtained, but
It is 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.Currently,
Using in VA liquid crystal (VerticalAlignment liquid crystal, homeotropic alignment liquid crystal) display will be in optical filter
Sub-pixel 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 this
Method needs more TFT (Thin Film Transistor, thin film transistor (TFT)) elements to drive sub-pixel, so certainly will be
The metal routing for increasing panel itself, causes the region of light-permeable to become smaller, influences the light transmittance of panel, influence image quality.And if
Guarantee brightness then needs the performance for improving backlight module, so that it is generated the incident light of more high brightness, so will increase backlight again
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 knot
Structure, display panel and display device.
A kind of structure of polarized light, comprising:
Light polarizing film, the light polarizing film include incidence surface and the light-emitting surface opposite with the incidence surface；
First optical compensation films, on the light-emitting surface of the light polarizing film, first optical compensation films have the first folding
Rate is penetrated, first optical compensation films are formed with bulge-structure, the bulge-structure away from the light polarizing film light-emitting surface on one side
It is acute angle that at least partly surface and the incidence surface, which are formed by angle,；
Second optical compensation films fit in the one side on first optical compensation films with the bulge-structure, described
Second optical compensation films have the second refractive index, and the first refractive index is greater than second refractive index.
Since in a display device, most of light that backlight module generates is vertical incidence to display panel, if display
Each membrane surface of structure of polarized light in panel is smooth and vertical with vertical incidence light direction, and most of incident light vertical incidence is to aobvious
Show and still vertically projected when panel, cause the positive visual angle image quality of display panel preferably and side view angle image quality is poor.In the present solution, by
In being equipped with the first optical compensation films and the second optical compensation films, and first refractive index is greater than the second refractive index, i.e. light penetrates first
Optical compensation films and when being incident to the second optical compensation films, are the processes for entering light thinning medium from light substantia compacta, mend in conjunction with the first optics
It repays and is formed with bulge-structure on one side with what the second optical compensation films fitted on film, the bulge-structure at least partly surface and enter light
The angle that face is formed is acute angle, after vertical incidence light enters the first optical compensation films, in the incidence that the surface of bulge-structure is formed
Angle makes vertical incidence light deflect, so that positive visual angle energy be made to be assigned to side view angle, mentions less than 90 °, therefore to reflect
The image quality at high side visual angle.
The bulge-structure is string configuration and includes circular arc camber in one of the embodiments, first light
Compensation film is formed with multiple bulge-structures and the strip bulge-structure is arranged side by side.
The bulge-structure includes ball-type curved surface in one of the embodiments, and first optical compensation films are formed with
Multiple bulge-structures and the bulge-structure are arranged in two-dimensional matrix array.
The radius of the curved surface is less than or equal to twice of the bulge-structure height in one of the embodiments,.
The center spacing of adjacent protrusion structure is less than or equal to 10 μm in one of the embodiments,.
The light polarizing film has penetrating shaft in one of the embodiments, and first optical compensation films are the first monochromatic light
The optical axis of axis A- compensation film, the first uniaxial A- compensation film is parallel with the penetrating shaft, and the first refractive index is described
The abnormal refraction rate of first A- compensation film, second optical compensation films are uniaxial C- compensation film, the uniaxial C- compensation
The optical axis of film is vertical with the penetrating shaft, and second refractive index is the normal refractive index of the C- compensation film.
In one embodiment, the light polarizing film has penetrating shaft, and first optical compensation films are the first uniaxial A- benefit
Repay film, the second optical compensation films of institute are the second uniaxial A- compensation film, the optical axis of the first uniaxial A- compensation film with it is described
Penetrating shaft is parallel, and the first refractive index is the abnormal refraction rate of the first uniaxial A- compensation film, second uniaxial
The optical axis of A- compensation film is vertical with the penetrating shaft, and second refractive index is the normal folding of the second uniaxial A- compensation film
Penetrate rate.
In one of the embodiments, doped with the resin particle of anti-hyun function in second optical compensation films.
A kind of structure of polarized light, including light polarizing film, the light polarizing film include incidence surface and the out light opposite with the incidence surface
Face；
First optical compensation films, on the light-emitting surface of the light polarizing film, first optical compensation films have the first folding
Rate is penetrated, first optical compensation films are formed with bulge-structure, the bulge-structure away from the light polarizing film light-emitting surface on one side
Top includes ball-type curved surface, and the radius of the curved surface is less than or equal to twice of the bulge-structure height, the bulge-structure
It is arranged in two-dimensional matrix array；
Second optical compensation films fit in the one side on first optical compensation films with the bulge-structure, described
Second optical compensation films have the second refractive index, and the first refractive index is greater than second refractive index.
Above-mentioned structure of polarized light, due to being equipped with the first optical compensation films and the second optical compensation films, and first refractive index is greater than
It is to enter light from light substantia compacta to dredge when second refractive index, i.e. light penetrate the first optical compensation films and be incident to the second optical compensation films
The process of matter is formed with bulge-structure with what the second optical compensation films fitted in conjunction on the first optical compensation films on one side, this is convex
Playing structural top includes curved surface, after vertical incidence light enters the first optical compensation films, in the incidence angle that curved surface is formed less than 90 °,
Therefore to reflect, so that vertical incidence light is deflected, so that positive visual angle energy be made to be assigned to side view angle, improve side view angle
Image quality.
A kind of display panel, comprising:
First substrate, the first substrate include incident side and light emission side；
The second substrate, positioned at the first substrate light emission side and be oppositely arranged with the first substrate；
First polarizer is formed in the side for deviating from the second substrate on the first substrate；
Second polarizer is formed in the side for deviating from the first substrate in the second substrate；
First polarizer includes structure of polarized light described above；And/or
Second polarizer includes structure of polarized light described above.
Above-mentioned display panel includes structure of polarized light, using structure of polarized light, most of vertical incidence can be made to display surface
The light of plate is assigned to side view angle to side view angular deflection, by positive visual angle energy, to improve the image quality at side view angle.
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 above-mentioned display panel.
The display panel of above-mentioned display device includes structure of polarized light, and backlight module vertical incidence can be made to display panel
Light to side view angular deflection, positive visual angle energy is assigned to side view angle, to improve the image quality at side view angle.
Detailed description of the invention
Fig. 1 is structure of polarized light explosive view；
Fig. 2 is refraction schematic diagram of the structure of polarized light to incident light；
Fig. 3 A is the three-dimensional structure diagram of the first optical compensation films in an embodiment；
Fig. 3 B is the stereoscopic schematic diagram of the first optical compensation films in another embodiment；
Fig. 4 is the sizing specification figure to an embodiment relief structure；
Fig. 5 is structure of polarized light partial sectional view in an embodiment；
Fig. 6 is structure of polarized light partial sectional view in another embodiment；
Fig. 7 is display panel structure schematic diagram in an embodiment；
Fig. 8 is the first polarized light plate structure schematic diagram in an embodiment；
Fig. 9 is the second polarized light plate structure schematic diagram in another embodiment；
Figure 10 is display device structure schematic diagram in an embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized 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 the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.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 invention, 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 the description present invention and letter
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 be not considered as limiting the invention.
As shown in Figure 1, structure of polarized light includes the successively folded light polarizing film 100 set, the first optical compensation films 200 and the second optics
Compensation film 300, wherein light polarizing film 100 includes incidence surface 100A and light-emitting surface 100B, and incidence surface is the one side for receiving incident light,
Light forms polarised light after the polarization manipulation that the plane of incidence enters the progress light of light polarizing film 100 and projects from light-emitting surface.It is real one
It applies in example, light polarizing film 100 is polyvinyl alcohol film, and polyvinyl alcohol film is with high transparency, high ductibility energy and has to light inclined
Bestir oneself use.First optical compensation films 200 are being formed with multiple bulge-structures 201 away from light polarizing film light-emitting surface 100B on one side, convex
It plays at least partly surface of structure 201 and incidence surface is formed by angle [alpha] as acute angle, meet 0 ° of 90 ° of < α <.Second optical compensation
Film 300 fits on the first optical compensation films 200, i.e. the second optical compensation films 300 and the first optical compensation films 200 patch completely
It closes, it is possible to understand that, the first optical compensation films 200 are equipped with bulge-structure 201, then must shape on the second optical compensation films 300
The groove of Cheng Youke receiving bulge-structure 201.First optical compensation films 200 have first refractive index n1, the second optical compensation films
300 there is the second refractive index n2, first refractive index n1 to be greater than the second refractive index n2.When light penetrate the first optical compensation films 200 into
It is to enter the process of light thinning medium from light substantia compacta, and due at least partly table of bulge-structure 201 when entering the second optical compensation films 300
The angle α of face and incidence surface be acute angle, when light vertical incidence to the structure of polarized light, i.e., vertical incidence to incidence surface when, meeting
Refraction effect occurs, vertical incidence light is towards side view angular deflection.In a display device, due to most light be vertical incidence extremely
In polarizer, i.e., most light are perpendicular to incidence surface, if the smooth no protrusion of each film layer of polarizer, vertical incidence light passes through
Still vertical after structure of polarized light to project, most of light energy concentrates on the positive visual angle of panel, so that the image quality at positive visual angle is preferable, and side
Visual angle causes the image quality at side view angle poor since light energy is less.This programme is mended by the first optics of setting different refractivity
Repay film 200 and the second optical compensation films 300 and the one side shape in the first optical compensation films 200 and the second compensation film 300 to contact
It, can be in protrusion when vertical incidence light is incident to the second optical compensation films 300 from the first optical compensation films 200 at bulge-structure 201
It is reflected at structure, changes the propagation path of vertical incidence light, light is made to deflect, to make positive visual angle light type energy point
It is fitted on big visual angle, improves the image quality at side view angle.
As shown in connection with fig. 2, when light 1 or 2 vertical incidence of light and penetrate the first optical compensation films 200 enter the second optics
When compensation film 300, incidence angle of the vertical incidence light at bulge-structure surface is β, 0 90 ° of < β <, therefore light can be rolled over
It penetrates, refraction angle γ, since light is to enter light thinning medium from light substantia compacta, γ is greater than β, i.e. light propagation path changes, light
Line deviates original normally incident direction, dissipates to side, therefore has more light and inject side, improves the picture of side view angle
Matter.It should be understood that first refractive index n1 and the difference of the second refractive index n2 are bigger, refraction angle when reflecting is bigger,
The easier light type energy that will face is assigned to big visual angle.In one embodiment, the value range of first refractive index n1 is 1.0 < n1
The value range of < 2.5, the second refractive index n2 are 1.0 < n2 < 2.5.In one embodiment, if the value model of m=n1-n2, m
It encloses for 0.01 < m < 1.5.
As shown in Figure 3A, the first optical compensation films 200 are formed with multiple bulge-structures 201, and each bulge-structure 201 is strip
Shape structure and including arc-shaped curved surface, which can be circular arc camber.Each bulge-structure 201 can be arranged side by side, when bulge-structure 101
When comprising arc-shaped curved surface, the angle of arc-shaped curved surface and light polarizing film incidence surface is the section of arc-shaped curved surface and the angle of incidence surface, is somebody's turn to do
Angle is acute angle.As shown in Figure 3B, bulge-structure 201 also may include ball-type curved surface, and each bulge-structure 201 is in two-dimensional matrix array
The angle of arrangement, sphere curved surface and light polarizing film incidence surface is the section of sphere curved surface and the angle of incidence surface, which is acute angle.
Since in a display device, the light that backlight module generates is largely to concentrate vertical incidence to display panel, that is, it is incident to light
Learn the most of surface perpendicular to optical compensation films of light of compensation film.If the surfacing of each optical thin film is without convex in polarizer
It rises and is mutually perpendicular to vertical incidence light, then have not been changed its direction of propagation when vertical incidence light penetrates polarizer, i.e. light is vertical
It is still vertically projected when incident, light is caused to concentrate on positive angle, so that the display image quality of positive apparent direction is preferable, and side view angle
For degree since light is weaker, the image quality of side view angle is poor.In the present solution, due to be equipped with curved protrusion structure 201, can to hang down
Straight incident ray is reflected, and light deviates original normally incident direction, is dissipated to side, therefore is had more light and injected
The image quality of side view angle is improved in side.When bulge-structure is arc-shaped curved surface and bulge-structure is arranged side by side, only in one-dimensional square
It reflects, makes divergence of beam to the two sides of arc-shaped curved surface；When bulge-structure is sphere curved surface and bulge-structure is in two-dimensional rectangle
When array arranges, it can be reflected in two-dimensional surface, make divergence of beam to all angles of two-dimensional surface, to make each view
Preferable image quality can be presented in angle.In other examples, bulge-structure 201 also may include inclined-plane and the table of other forms
Face can be such that the light of vertical incidence reflects.
In one embodiment, as shown in figure 4, when above-mentioned curved surface is circular arc camber or ball curved surface, the radius of curved surface is R,
The height of bulge-structure 201 is D, and the relationship between radius R and height D can be R≤2D, so that reducing curved surface when film layer is relatively thin
Radius of curvature, radius of curvature is smaller, and refraction effect is more obvious, and the energy range that can be assigned to big visual angle is more.
In one embodiment, there are gaps between adjacent two bulge-structure, and gap also may not be present.As shown in figure 4, one
In embodiment, bulge-structure 201 is bilateral symmetry, and the width of bulge-structure 201 is 2r, in adjacent protrusion structure 201
In the heart away from for P, P >=2r.In one embodiment, the center spacing of adjacent protrusion structure 201 is less than or equal to 10 μm, i.e., less than one
As pixel opening width, that is, meet each pixel openings be corresponding at least one bulge-structure the pixel light is carried out it is inclined
Turn.
In one embodiment, between adjacent two bulge-structure there are gap, as shown in figure 4, gap width is G, G be less than or
Close to the wavelength of incident light.When light is incident to optical compensation films, the light propagated at optical compensation films bulge-structure can be sent out
Raw refraction, the light for making light to side view angular deflection, while propagating at adjacent protrusion structure interval can occur diffraction, can also make
Light may make more vertical incidence light to side view angular deflection to enhance to side view angular deflection, refraction action combination diffraction
The image quality at side view angle.In one embodiment, the value range of G is specially 300nm≤X≤1000nm.
Light polarizing film 100 has absorption axiss and penetrating shaft, and the direction of an electric field polarization luminous energy parallel with penetrating shaft passes through light polarizing film.
In the present solution, the transparent or semitransparent material that optical compensation films should be light-permeable is made and has the function of optical compensation, light
Learn compensation concretely phase compensation.In one embodiment, liquid crystal is filled in optical compensation films, liquid crystal is birefringent material,
Light can reflect into two light of normal light and unusual light when entering liquid crystal, wherein and the refractive index of normal light is normal refractive index,
The refractive index of unusual light is abnormal refraction rate, and abnormal refraction direction is the photoelectricity field direction direction parallel with liquid crystal optic axis, normally
Refractive direction is the optical electric field direction vertical with liquid crystal optic axis, and abnormal refraction direction is vertical with normal refraction direction.In this implementation
In example, as shown in figure 5, the first optical compensation films 200 are the first uniaxial A- compensation film, it can inside the first uniaxial A- compensation film
Fill nematic liquid crystal 202, nematic liquid crystal be the rodlike type liquid crystal of strip, the optical axis of nematic liquid crystal it is parallel with incidence surface and with
The penetrating shaft of polarizing coating is parallel, and the abnormal refraction direction of nematic liquid crystal is that photoelectricity field direction is parallel with the optical axis of nematic liquid crystal
Direction, i.e. the photoelectricity field direction of nematic liquid crystal abnormal refraction is parallel with the penetrating shaft of polarizing coating, corresponding abnormal refraction rate
For n1e；Second optical compensation films 200 are uniaxial C- compensation film, and disc-like liquid crystal 301, dish can be filled in uniaxial C- compensation film
The optical axis of shape liquid crystal is that photoelectricity field direction is vertical with disc-like liquid crystal optical axis perpendicular to incidence surface, the normal refraction direction of disc-like liquid crystal
All directions, i.e., the photoelectricity field direction of the normal refraction of disc-like liquid crystal can be all directions parallel with incidence surface, it is corresponding
Normal refractive index is n2o, in the present embodiment, first refractive index is the abnormal refraction rate n1 of A- compensation filme, the second refractive index is
C- compensation film normal refractive index n2o.Light becomes linearly polarized light after the polarization manipulation of light polarizing film, the electric field of the linearly polarized light
Direction is parallel with penetrating shaft, by the first optical compensation films, due to the direction of an electric field and the first optical compensation films of linearly polarized light
Optical axis is parallel, therefore abnormal refraction only occurs in the first optical compensation films, and first refractive index chooses the first optical compensation films
Then abnormal refraction rate passes through the second optical compensation films, due to the electric field side of the linearly polarized light after the first optical compensation films
It is parallel to the penetrating shaft still with polarizing coating, it is vertical with the optical axis of the second optical compensation films, therefore in the second optical compensation films
Normal refraction only occurs, the second refractive index chooses the normal refractive index of the second optical compensation films.Due to light meeting after liquid crystal
There is the phenomenon that phase delay, in the present solution, utilizing the refractive index of uniaxial A- compensation film and uniaxial C- compensation film not
While so that vertical incidence light is deflected together, uniaxial A- compensation film also constitutes double optical axis phases with uniaxial C- compensation film
Position compensation film can carry out phase compensation to light, avoid influence of the phase delay to image quality.
In another embodiment, as shown in fig. 6, the first optical compensation films are the first uniaxial A- compensation film, the first monochromatic light
Nematic phase 202 can be filled inside axis A- compensation film, parallel with the incidence surface and penetrating shaft with polarizing coating of the optical axis of nematic phase 202 is flat
Row, the abnormal refraction direction of nematic phase 202 are the photoelectricity field direction direction parallel with the optical axis of nematic phase 202, i.e. nematic phase 202
The photoelectricity field direction of abnormal refraction is parallel with the penetrating shaft of polarizing coating, and corresponding abnormal refraction rate is n1e；Second optical compensation films
300 be the second uniaxial A- compensation film, and nematic phase 302, and the light of nematic phase 302 can be filled inside the second uniaxial A- compensation film
Axis is vertical with penetrating shaft, and the normal refraction direction of nematic phase 302 is the photoelectricity field direction side vertical with the optical axis of nematic phase 302
To the photoelectricity field direction of i.e. 302 normal refraction of nematic phase is parallel with the penetrating shaft of polarizing coating, and corresponding normal refractive index is n1o。
And the abnormal refraction rate of uniaxial A- compensation film is greater than its normal refractive index, i.e. n1e>n1o.Light is from the first uniaxial compensation film
It is the process that light substantia compacta enters light thinning medium into the process of the second uniaxial compensation film.
In one embodiment, it is additionally provided with support membrane between the first optical compensation films 200 and light polarizing film 100, support membrane can
For Triafol T (TAC) support membrane, it can also be polyethylene terephthalate (PET) support membrane, can also be poly- methyl
Methyl acrylate (PMMA) support membrane.In general, use polyvinyl alcohol as light polarizing film in structure of polarized light, and polyvinyl alcohol has pole
Strong hydrophily is arranged support membrane, can protect the physical characteristic of light polarizing film.In another embodiment, the first optical compensation films 200
Be mounted directly on the light-emitting surface of light polarizing film 100, i.e., be not provided with support membrane between the first optical compensation films and light polarizing film, due to
The side of light polarizing film is equipped with the first optical compensation films and the second optical compensation films, the first optical compensation films and the second optical compensation films
Light can be deflected, can also act as protective layer to protect light polarizing film, therefore can be omitted light polarizing film in polarizer
The support membrane of light emission side is conducive to the slimming design of product.It should be noted that the first optical compensation films and the second optics are mended
Suitable thickness need to be had to realize the protective effect to light polarizing film by repaying film.
Structure of polarized light is particularly located in polarizer, is the core component of polarizer, polarizer is especially by structure of polarized light pair
Light carries out polarization manipulation.And polarizer is integrated in display panel, the polarizer for showing picture side positioned at display panel is
Second polarizer, the polarizer positioned at display panel away from the other side of display picture side are the first polarizer, and light is incident
When to display panel, first passes through after the polarization manipulation of the first polarizer using the second polarizer and project.In one embodiment,
Above-mentioned structure of polarized light can be located in first polarizer, and the tree of anti-hyun function can be doped in the second optical compensation films therein
Ester particle can reduce display panel light reflex in the case where not increasing polarisation plate thickness, promote user experience.
The invention further relates to a kind of structure of polarized light, and in conjunction with shown in Fig. 1 and Fig. 4, structure of polarized light includes the successively folded polarisation set
Film 100, the first optical compensation films 200 and the second optical compensation films 300, wherein the light including incidence surface 100A and out of light polarizing film 100
Face 100B, incidence surface are the one side for receiving incident light, and light is after the polarization manipulation that the plane of incidence enters that light polarizing film 100 carries out light
It forms polarised light and is projected from light-emitting surface.First optical compensation films 200 are in being formed on one side away from light polarizing film light-emitting surface 100B
Multiple bulge-structures 201, bulge-structure top include sphere curved surface, and it is high that the radius R of curved surface is less than or equal to the bulge-structure
Twice for spending D, each bulge-structure are arranged in two-dimensional matrix array.Second optical compensation films 300 fit in the first optical compensation films
On 200, i.e. the second optical compensation films 300 are bonded completely with the first optical compensation films 200.First optical compensation films 200 have the
There is the second refractive index n2, first refractive index n1 to be greater than the second refractive index n2 for one refractive index n1, the second optical compensation films 300.When
It is the process for entering light thinning medium from light substantia compacta, again when light penetrates the first optical compensation films 200 the second optical compensation films 300 of entrance
Due to including curved surface at the top of bulge-structure 201, when light vertical incidence to the structure of polarized light, i.e. vertical incidence to incidence surface
When, refraction effect can occur at curved surface, and the radius of curved surface is less than or equal to twice of the bulge-structure height, so that
Reduce the radius of curvature of curved surface when film layer is relatively thin, radius of curvature is smaller, and refraction effect is more obvious, and can be assigned to the energy at big visual angle
It is more to measure range, to improve the image quality at side view angle.When bulge-structure is sphere curved surface and bulge-structure is in two-dimensional rectangle battle array
When column arrangement, it can be reflected in two-dimensional surface, divergence of beam is made to make each visual angle can to all angles of two-dimensional surface
Preferable image quality is presented.
Invention additionally discloses a kind of display panels, including first substrate, the second substrate, the first polarizer and the second polarisation
Plate, wherein first substrate includes incident side and light emission side, the second substrate be located at the light emission side of first substrate and with first substrate phase
To setting, the first polarizer is formed in the side for deviating from the second substrate on first substrate, and the second polarizer is formed in the second substrate
The upper side away from first substrate, the first polarizer and/or the second polarizer include structure of polarized light, and structure of polarized light is detailed above
Thin to introduce, details are not described herein.
Above-mentioned display panel, light successively pass through the first polarizer, first substrate, the second substrate and the second polarizer, most
After show picture.Due to including structure of polarized light in polarizer, at structure of polarized light, refraction effect can occur for light, make vertically to enter
Light is penetrated to side view angular deflection, positive visual angle energy is assigned to side view angle, improves the image quality at side view angle.
In one embodiment, as shown in fig. 7, display panel can be liquid crystal display panel, which includes the
Two polarizers 10, the first polarizer 30, support the second polarizer the second substrate, support the first polarizer first substrate and
The liquid crystal being folded among first substrate and the second substrate, wherein first substrate, the second substrate and be folded in first substrate and
Liquid crystal among two substrates constitutes liquid crystal layer 20.Incident light becomes linearly polarized light after the first polarizer, and liquid crystal layer 20 can be turned round
The polarization direction for turning linearly polarized light passes through linearly polarized light from the second polarizer, to show picture on a display panel.
Above-mentioned structure of polarized light can be located in the first polarizer, may be alternatively located in the second polarizer.In one embodiment, as schemed
Shown in 8, when structure of polarized light is located at the first polarizer, the first polarizer is in addition to comprising above-mentioned structure of polarized light, also comprising fitting in
The support membrane 500 of light polarizing film incidence surface and the pressure-sensitive adhesive layer 400 being stacked in the second compensation film, the first polarizer can pass through pressure
Quick glue-line 400 is pasted on first substrate, wherein the first optical compensation films 200 can be the first uniaxial A- compensation film, the second light
Learning compensation film 300 can be the second uniaxial A- compensation film or uniaxial C- compensation film, utilize the first optical compensation films and second
The refractive index of optical compensation films is different and while so that vertical incidence light is deflected, the first optical compensation films and the second optics
Compensation film also constitutes double optical axis phase compensation films, can carry out phase compensation to light, avoid influence of the phase delay to image quality.
In another embodiment, as shown in figure 9, when structure of polarized light is located in the second polarizer, the second polarizer is removed comprising above-mentioned inclined
It also include the folded phase compensation film 600 and pressure sensitive adhesive set of one side in light polarizing film away from the first optical compensation films outside photo structure
Layer 700, wherein phase compensation film 600 is between pressure-sensitive adhesive layer 700 and light polarizing film 100.
In other embodiments, display panel may be Organic Light Emitting Diode (Organic Light-Emitting
Diode, OLED) display panel, light emitting diode with quantum dots (Quantum Dot Light Emitting Diodes, QLED)
Display panel or curved face display panel, and other display panels comprising above-mentioned structure of polarized light.
Invention additionally discloses a kind of display devices, as shown in Figure 10, including backlight module 2 and are placed in backlight module side
Display panel 1, wherein display panel 1 include above-mentioned structure of polarized light.Backlight module 2 for providing light source, light source board generate into
Light is penetrated, which concentrates on 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 be vertical incidence light, due in display panel 1 exist the first optical compensation films with
Second optical compensation films and the first optical compensation films are formed with bulge-structure, can will be vertical by refraction on bulge-structure surface
Incident light is deflected, so that positive visual angle energy will be assigned to side view angle, improves the image quality at side view angle.It is inclined in display panel
The structure of tabula rasa is being described above, and details are not described herein again.Wherein, light source can be side entering type light source in backlight module 20, guide-lighting
The upper and lower surface of plate is equipped with strip V-groove, and the side wall of light guide plate lower surface V-groove is parallel with side entering type light source, on light guide plate
The V-groove on 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 embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (11)
1. a kind of structure of polarized light characterized by comprising
Light polarizing film, the light polarizing film include incidence surface and the light-emitting surface opposite with the incidence surface；
First optical compensation films, on the light-emitting surface of the light polarizing film, first optical compensation films have first refractive index,
First optical compensation films are formed with bulge-structure, the bulge-structure at least portion away from the light polarizing film light-emitting surface on one side
It is acute angle that point surface and the incidence surface, which are formed by angle,；
Second optical compensation films, fitting on first optical compensation films has the one side of the bulge-structure, and described second
Optical compensation films have the second refractive index, and the first refractive index is greater than second refractive index.
2. structure of polarized light as described in claim 1, which is characterized in that the bulge-structure is string configuration and includes circular arc
Curved surface, first optical compensation films are formed with multiple bulge-structures and the strip bulge-structure is arranged side by side.
3. structure of polarized light as described in claim 1, which is characterized in that the bulge-structure include ball-type curved surface, described first
Optical compensation films are formed with multiple bulge-structures and the bulge-structure is arranged in two-dimensional matrix array.
4. structure of polarized light as claimed in claim 2 or claim 3, which is characterized in that the radius of the curved surface is less than or equal to described convex
Twice for playing structure height.
5. structure of polarized light as described in claim 1, which is characterized in that the center spacing of adjacent protrusion structure is less than or equal to 10
μm。
6. structure of polarized light as described in claim 1, which is characterized in that the light polarizing film has penetrating shaft, first optics
Compensation film is the first uniaxial A- compensation film, and the optical axis of the first uniaxial A- compensation film is parallel with the penetrating shaft, described
First refractive index is the abnormal refraction rate of the first A- compensation film, and second optical compensation films are uniaxial C- compensation film,
The optical axis of the uniaxial C- compensation film is vertical with the penetrating shaft, and second refractive index is the normal folding of the C- compensation film
Penetrate rate.
7. structure of polarized light as described in claim 1, which is characterized in that the light polarizing film has penetrating shaft, first optics
Compensation film is the first uniaxial A- compensation film, and the second optical compensation films of institute are the second uniaxial A- compensation film, first monochromatic light
The optical axis of axis A- compensation film is parallel with the penetrating shaft, and the first refractive index is the abnormality of the first uniaxial A- compensation film
The optical axis of refractive index, the second uniaxial A- compensation film is vertical with the penetrating shaft, and second refractive index is described second
The normal refractive index of uniaxial A- compensation film.
8. structure of polarized light as described in claim 1, which is characterized in that doped with anti-hyun function in second optical compensation films
Resin particle.
9. a kind of structure of polarized light characterized by comprising
Light polarizing film, the light polarizing film include incidence surface and the light-emitting surface opposite with the incidence surface；
First optical compensation films, on the light-emitting surface of the light polarizing film, first optical compensation films have first refractive index,
First optical compensation films are formed with bulge-structure, packet at the top of the bulge-structure away from the light polarizing film light-emitting surface on one side
Curved surface containing ball-type, the radius of the curved surface are less than or equal to twice of the bulge-structure height, and the bulge-structure is in two dimension
Matrix array arrangement；
Second optical compensation films, fitting on first optical compensation films has the one side of the bulge-structure, and described second
Optical compensation films have the second refractive index, and the first refractive index is greater than second refractive index.
10. a kind of display panel, comprising:
First substrate, the first substrate include incident side and light emission side；
The second substrate, positioned at the first substrate light emission side and be oppositely arranged with the first substrate；
First polarizer is formed in the side for deviating from the second substrate on the first substrate；
Second polarizer is formed in the side for deviating from the first substrate in the second substrate；
It is characterized in that,
First polarizer includes the described in any item structure of polarized light of claim 1 to 7；And/or
Second polarizer includes the described in any item structure of polarized light of claim 1 to 9.
11. 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 described in claim 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161577.5A CN109143444A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light, display panel and display device |
| PCT/CN2018/119265 WO2020062562A1 (en) | 2018-09-30 | 2018-12-05 | Polarizing structure and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161577.5A CN109143444A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light, display panel and display device |
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| CN109143444A true CN109143444A (en) | 2019-01-04 |
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| CN201811161577.5A Pending CN109143444A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light, display panel and display device |
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| CN (1) | CN109143444A (en) |
| WO (1) | WO2020062562A1 (en) |
Cited By (1)
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| CN115097665A (en) * | 2022-07-08 | 2022-09-23 | 苏州华星光电技术有限公司 | Display panel, preparation method thereof and display device |
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| WO2020062562A1 (en) | 2020-04-02 |
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