CN109164531A - Structure of polarized light and display device - Google Patents
Structure of polarized light and display device Download PDFInfo
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- CN109164531A CN109164531A CN201811161890.9A CN201811161890A CN109164531A CN 109164531 A CN109164531 A CN 109164531A CN 201811161890 A CN201811161890 A CN 201811161890A CN 109164531 A CN109164531 A CN 109164531A
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- light
- refractive index
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- film
- optical compensation
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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
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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
Abstract
The present invention relates to a kind of structure of polarized light, comprising: support membrane has first refractive index, and support membrane includes incidence surface and the light-emitting surface opposite with incidence surface, and multiple grooves are formed on light-emitting surface；Optical compensation films, it is formed with multiple bulge-structures to match with groove shapes, size, the width of bulge-structure be less than or close to incident light wavelength, optical compensation films fit on the light-emitting surface of support membrane, and bulge-structure is contained in groove, optical compensation films have the second refractive index, and first refractive index is greater than the second refractive index.Light polarizing film is set on optical compensation films；Phase compensation film is set in light polarizing film.By the support membrane and optical compensation films and formation bulge-structure of setting different refractivity, vertical incidence light can be made to deflect, positive visual angle light energy is assigned to side view angle, improves side view angle image quality.The invention further relates to a kind of another structure of polarized light and display devices.
Description
Technical field
The present invention relates to display fields, more particularly to a kind of structure of polarized light 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 (Vertical Alignment liquid crystal, homeotropic alignment liquid crystal) display will be in optical filter
Sub-pixel be again divided into the means of multiple sub-pixels to improve the image quality at side view angle, to expand display view angle.But this
Kind method needs more TFT (Thin Film Transistor, thin film transistor (TFT)) elements to drive sub-pixel, is so bound to
For the metal routing for increasing panel itself, causes the region of light-permeable to become smaller, influence the light transmittance of panel, influence image quality.And if
In order to guarantee brightness, then the performance for improving backlight module is needed, so that it is generated the incident light of more high brightness, so will increase back again
Light 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:
Support membrane has first refractive index, and the support membrane includes incidence surface and the light-emitting surface opposite with the incidence surface,
Multiple grooves are formed on the light-emitting surface；
Optical compensation films are formed with multiple bulge-structures to match with the groove shapes, size, the bulge-structure
Width be less than or close to incident light wavelength, the optical compensation films fit on the light-emitting surface of the support membrane, and described
Bulge-structure is contained in the groove, and the optical compensation films have the second refractive index, and the first refractive index is greater than described
Second refractive index；
Light polarizing film is set on the optical compensation films；
Phase compensation film is set in the light polarizing film.
Since in a display device, most of light is vertical incidence to display panel, and display panel includes structure of polarized light,
Structure of polarized light include light polarizing film and support protection light polarizing film support membrane, if each membrane surface in structure of polarized light it is smooth and with hang down
Straight incident light is mutually perpendicular to, and when most of incident light vertical incidence to structure of polarized light is still vertically projected, most of luminous energy quantity set
In at positive visual angle, cause the positive visual angle image quality of display panel preferably and side view angle image quality is poor.And in the present solution, in structure of polarized light
Formed fluted on support membrane, while being folded on support membrane and setting one layer of optical compensation films, optical compensation films be formed with it is multiple with it is recessed
The bulge-structure that slot matches, optical compensation films and support membrane fit closely gapless, and bulge-structure is contained in groove, support
Film has first refractive index, and optical compensation films have the second refractive index, and first refractive index is greater than the second refractive index, i.e. light is vertical
It when being incident to display panel, penetrates support membrane and is incident to the process of optical compensation films, be the mistake for entering light thinning medium from light substantia compacta
Journey.Meanwhile what is contacted in optical compensation films with support membrane is formed with multiple bulge-structures on one side, the width of each bulge-structure is less than
Or the wavelength close to incident light, when incident light enters light thinning medium from light substantia compacta, which is equivalent to a grating, is incident to
Diffraction can occur for the light at bulge-structure, to change the propagation path of light, so that vertical incidence light is diffused to side view angle, mention
The image quality at high side visual angle.
The width of the bulge-structure is greater than or equal to 300nm in one of the embodiments, and is less than or equal to
1000nm。
The bulge-structure is strip protrusion in one of the embodiments, and the strip bulge-structure is side by side
Setting.
The bulge-structure is arranged in two-dimensional matrix array in one of the embodiments, and the length of the bulge-structure
Degree and width be respectively less than or close to incident light wavelength.
The light polarizing film has penetrating shaft in one of the embodiments, and the optical compensation films are that uniaxial liquid crystal is thin
Film, the optical axis of the liquid crystal film is vertical with the penetrating shaft, and second refractive index is the normal refraction of the liquid crystal film
Rate.
The uniaxial liquid crystal film is uniaxial A- compensation film in one of the embodiments, and the uniaxial A- is mended
It repays filled with nematic liquid crystal molecule in film, the optical axis of the nematic liquid crystal molecule is parallel to the incidence surface and perpendicular to institute
Penetrating shaft is stated, second refractive index is the normal refractive index of the A- compensation film.
The uniaxial liquid crystal film is uniaxial C- compensation film in one of the embodiments, and the uniaxial C- is mended
It repays filled with smectic in film, the optical axis of the smectic is worn perpendicular to the incidence surface and perpendicular to described
Saturating axis, second refractive index are the normal refractive index of the C- compensation film.
The support membrane includes Triafol T support membrane, poly terephthalic acid second two in one of the embodiments,
Any one in alcohol ester support membrane, polymethyl methacrylate support membrane.
A kind of structure of polarized light characterized by comprising
Support membrane has first refractive index, and the support membrane includes incidence surface and the light-emitting surface opposite with the incidence surface,
Multiple grooves are formed on the light-emitting surface；
Optical compensation films are formed with multiple bulge-structures to match with the groove shapes, size, the bulge-structure
Arranged in two-dimensional matrix array, and the length and width of the bulge-structure be respectively less than or close to incident light wavelength, the phase
Center spacing between adjacent bulge-structure is less than or equal to the opening width of single pixel, and the optical compensation films fit in described
On the light-emitting surface of support membrane, and the bulge-structure is contained in the groove, and the optical compensation films have the second refractive index,
The first refractive index is greater than second refractive index；
Light polarizing film is set on the optical compensation films；
Phase compensation film is set in the light polarizing film.
Above-mentioned structure of polarized light, each pixel openings are corresponding at least one bulge-structure and deflect to the pixel light,
It can make each side view angular deflection of the light of most of vertical incidence to display panel into two-dimensional surface, by positive visual angle energy
It is assigned to side view angle, 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 includes above-mentioned structure of polarized light.
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 diffraction schematic diagram of the structure of polarized light to incident light；
Fig. 3 a is the three-dimensional structure diagram of optical compensation films in an embodiment；
Fig. 3 b is the stereoscopic schematic diagram of optical compensation films in another embodiment；
Fig. 4 a is structure of polarized light partial sectional view in an embodiment；
Fig. 4 b is the direction relations figure of the optical axis for penetrating pumping and optical compensation films of light polarizing film in Fig. 4 a；
Fig. 5 a is structure of polarized light partial sectional view in another embodiment；
Fig. 5 b is the direction relations figure of the optical axis for penetrating pumping and optical compensation films of light polarizing film in Fig. 5 a；
Fig. 6 is display device structure schematic diagram in an embodiment；
Fig. 7 is display panel 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 support membrane 100 set, optical compensation films 200, light polarizing film 300 and phase
Position compensation film 400, wherein support membrane 100 includes incidence surface 100A and light-emitting surface 100B, and incidence surface is receive incident light one
Face, light enter support membrane from incidence surface and project from light-emitting surface.In the present solution, the light-emitting surface of support membrane 100 be formed with it is more
A groove 101, while one layer of optical compensation films 200 are covered in the light-emitting surface of support membrane, it is formed on optical compensation films 200 multiple
The bulge-structure 201 to match with 101 shape of groove, size, bulge-structure 201 can be embedded just below in groove 101.Bulge-structure
201 width be less than or close to incident light wavelength, optical compensation films 200 fit on the light-emitting surface of support membrane 100, and protrusion
Structure 201 is completely accommodated in groove 101, i.e., fits closely gapless between support membrane 100 and optical compensation films 200.Support
Film has first refractive index n1, and there is optical compensation films the second refractive index n2, first refractive index n1 to be greater than the second refractive index n2, when
It is the process for entering light thinning medium from light substantia compacta when light penetrates the entrance optical compensation films 200 of support membrane 100.Again due to bulge-structure
Width be less than or close to incident light wavelength, when at incident light propagation to the bulge-structure 201, due to the width of bulge-structure
Degree is less than or close to wavelength, which is equivalent to a grating, and diffraction can occur at the bulge-structure for light.It is filled in display
In setting, since most light are vertical incidence into polarizer, i.e., for most light perpendicular to incidence surface, this programme is logical
Cross the support membrane 100 that different refractivity is set and optical compensation films 200 and in the contact of optical compensation films 200 and support membrane 100
Face forms bulge-structure 201, forms grating by bulge-structure, incident light is from 100 vertical incidence of support membrane to optical compensation films
When 200, diffraction can occur at bulge-structure, change the propagation path of vertical incidence light, so that light is deflected, to make just
Visual angle light type energy is assigned to big visual angle, improves the image quality at side view angle.Light polarizing film 300 is stacked on optical compensation films, and light penetrates
Enter light polarizing film 300 after optical compensation films, light polarizing film 300 carries out polarization manipulation, only direction of an electric field and light polarizing film to incident light
The parallel light of penetrating shaft can penetrate light polarizing film, i.e., the direction of an electric field of light projected from light polarizing film 300 and wearing for light polarizing film
Saturating axis is parallel.In one embodiment, light polarizing film is polyvinyl alcohol film, polyvinyl alcohol film have high transparency, high ductibility energy and
There is polarization to light.In one embodiment, support membrane may include Triafol T (TAC) support membrane, also may include
Polyethylene terephthalate (PET) support membrane also may include polymethyl methacrylate (PMMA) support membrane.Due to polarisation
Film has extremely strong hydrophily, needs to support and protect in polarisation film surface setting protective film the physical characteristic of light polarizing film,
In the present solution, support membrane 100 and optical compensation films 200 also collectively form light polarizing film and enter light in addition to having the function of deflecting light
The protective film of side, but support membrane 100 and optical compensation films 200, which need suitable thickness, to protect light polarizing film.
Phase compensation film 400 is stacked in light polarizing film 300, and phase compensation film can carry out phase compensation to light.In a display device,
Light will appear the phenomenon that phase delay after treatment, and phase delay can seriously affect image quality, phase compensation film be arranged, in light
Line carries out phase compensation before projecting display panel, can avoid influence of the phase delay to image quality.In one embodiment, phase compensation
Film can be the combination of A- film or C- film or A- film and C- film.
As shown in connection with fig. 2, the width of bulge-structure is X, and the value range of X can be 300nm≤X≤1000nm, works as light
When vertically penetrating the entrance optical compensation films 200 of support membrane 100, diffraction occurs at bulge-structure 201, i.e. light propagation path is sent out
Raw to change, light deviates original normally incident direction, dissipates to side, therefore has more light and inject side, improves side
The image quality of angle.It should be understood that first refractive index n1 and the difference of the second refractive index n2 are bigger, diffraction phenomena is more obvious,
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
Enclosing can be 0.01 < m < 1.5.
As shown in Figure 3a, multiple bulge-structures 201 are formed on optical compensation films 200, each bulge-structure 201 is strip
Protrusion, each strip bulge-structure 201 can be arranged side by side, the width of each strip protrusion be less than or close to incident light wavelength.
As shown in Figure 3b, bulge-structure 201 can also be arranged in two-dimensional matrix array, the width (X-direction) and length (Y of each bulge-structure
Direction) be respectively less than or close to incident light wavelength.Since in a display device, the light that backlight module generates is largely to concentrate
Vertical incidence if the surfacing of each tunic and being mutually perpendicular to vertical incidence light in structure of polarized light, vertically enters to display panel
It penetrates and is still vertically projected when will not change its direction of propagation, i.e. light vertical incidence when light penetrates polarizer, light is caused to concentrate
In positive angle, so that the display image quality of positive apparent direction is preferable, and side view angle is since light is weaker, the image quality of side view angle compared with
Difference.In the present solution, due to be equipped with multiple bulge-structures 201, bulge-structure 201 can make vertical incidence light generate diffraction,
Light deviates original normally incident direction, dissipates to side, therefore has more light and inject side, improves side view angle
Image quality.When bulge-structure is strip protrusion and is arranged side by side, diffraction only occurs in one-dimensional square (X-direction), sends out light
It is scattered to the two sides of bulge-structure；When bulge-structure is arranged in two-dimensional rectangle array, since the length and width of bulge-structure is equal
Be less than or close to incident light wavelength, diffraction can occur in the two-dimensional surface (X-direction and Y-direction).In some embodiments, convex
Playing structure 201 is cuboid protrusion, and in other examples, bulge-structure 201 can also be the protrusion of other forms, protrusion knot
The size of structure can make incident light that diffraction occur.In one embodiment, bulge-structure is in periodic arrangement, i.e. adjacent protrusion
The center spacing of structure is equal.In one embodiment, the center spacing of adjacent protrusion structure is less than or equal to 10 μm, that is, is less than
Or the opening width equal to general single pixel, that is, meet each pixel openings and is corresponding at least one bulge-structure to the pixel
Light is deflected.
Light polarizing film 300 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,
Direction of an electric field i.e. by the linearly polarized light of light polarizing film is parallel with penetrating shaft.In the present solution, optical compensation films should be light-permeable
Transparent or semitransparent material be made and have the function of optical compensation, optical compensation concretely phase compensation.Implement one
In example, optical compensation films can be uniaxial liquid crystal film, be filled with liquid crystal molecule and each liquid crystal molecule in uniaxial liquid crystal film
Optical axis it is parallel, make liquid crystal film in uniaxial characteristic, the optical axis direction of liquid crystal film is the optical axis side of internal liquid crystal molecule
To, and the optical axis of uniaxial liquid crystal film is vertical with the penetrating shaft of light polarizing film.Since liquid crystal is birefringent material, in general, light
Two light of normal light and unusual light can be reflected into when into liquid crystal, wherein the refractive index of normal light is normal refractive index, unusual
The refractive index of light is abnormal refraction rate, and abnormal refraction direction is the photoelectricity field direction direction parallel with liquid crystal optic axis, normal refraction
Direction is the optical electric field direction vertical with liquid crystal optic axis, and abnormal refraction direction is vertical with normal refraction direction, i.e. the electricity of incident light
Field is refracted into the component parallel with optical axis (abnormal refraction) and the component vertical with optical axis (normal refraction) in liquid crystal.Due to
Light polarizing film is equipped with above optical compensation films, the only direction of an electric field light parallel with light polarizing film penetrating shaft can pass through light polarizing film,
In the present embodiment, the optical axis of optical compensation films is vertical with penetrating shaft, the direction of an electric field and penetrating shaft of the normal light of optical compensation films
In parallel, therefore the normal light component of only optical compensation films can penetrate light polarizing film, therefore choose the normal folding of optical compensation films
Penetrating rate n2o is the second refractive index, which is less than the refractive index of support membrane.Similarly, in other embodiments, optics is mended
The optical axis for repaying film can also be parallel with the penetrating shaft of light polarizing film, sends out light-transmissive light polarizing film normal in optical compensation films, chooses optics
Second refractive index of the abnormal refraction rate of compensation film as optical compensation films, the abnormal refraction rate are less than the refractive index of support membrane.
In one embodiment, as shown in Fig. 4 a and Fig. 4 b, the concretely uniaxial A- compensation film of optical compensation films 200 is single
Nematic liquid crystal 202 can be filled inside optical axis A- compensation film, nematic liquid crystal is the rodlike type liquid crystal of strip, the light of nematic liquid crystal
Parallel and perpendicular to the penetrating shaft 301 of polarizing coating, the abnormal refraction direction of nematic liquid crystal is optical electric field side for axis 203 and incidence surface
To the direction parallel with the optical axis of nematic liquid crystal, i.e. the photoelectricity field direction of nematic liquid crystal abnormal refraction and penetrating for polarizing coating
Axis is vertical, and corresponding abnormal refraction rate is n1e；The normal refraction direction of nematic liquid crystal is photoelectricity field direction and nematic liquid crystal
The vertical direction of optical axis, i.e. the photoelectricity field direction of the normal refraction of nematic liquid crystal is parallel with the penetrating shaft of polarizing coating, corresponding
Normal refractive index be n1o.Under normal conditions, when incident light enters optical compensation films, optical electric field can be refracted as flat with optical axis
Capable component (abnormal refraction) and the component vertical with optical axis (normal refraction).In the present embodiment, due to nematic liquid crystal
Optical axis 203 is vertical with the penetrating shaft 301 of light polarizing film, as incidence surface in Fig. 4 b X-direction and Y-direction it is parallel, nematic liquid crystal
Optical axis 203 can be at the Y-direction in Fig. 4 b, the penetrating shaft 301 of light polarizing film is in the X-direction in Fig. 4 b, in other embodiments
In, the optical axis 203 of nematic liquid crystal can be at the X-direction in Fig. 4 b, and the penetrating shaft 301 of light polarizing film is in the Y-direction in Fig. 4 b,
Meet optical axis 203 and is parallel to incidence surface and vertical with penetrating shaft 301.In the present embodiment, incident light enters optical compensation
Refraction is at normal light and unusual light after film, wherein the direction of an electric field of normal light is parallel to X-direction, the i.e. direction of an electric field of normal light
It is parallel to penetrating shaft, the direction of an electric field of unusual light is parallel to Y-direction, and only normal light can penetrate light polarizing film, therefore the second folding
Penetrate the normal refractive index that rate is optical compensation films 200.
In one embodiment, as shown in figure 5 a and 5b, optical compensation films 200 are uniaxial C- compensation film, uniaxial C-
Smectic 204 can be filled inside compensation film, the optical axis 205 of disc-like liquid crystal is vertical and perpendicular to polarizing coating with incidence surface
Penetrating shaft 301, the abnormal refraction direction of disc-like liquid crystal are the photoelectricity field direction direction parallel with the optical axis of disc-like liquid crystal, i.e. disk like
The photoelectricity field direction of liquid crystal abnormal refraction is vertical with the penetrating shaft of polarizing coating, and corresponding abnormal refraction rate is n1e；Disc-like liquid crystal
Normal refraction direction is the photoelectricity field direction direction vertical with the optical axis of disc-like liquid crystal, the i.e. photoelectricity of the normal refraction of disc-like liquid crystal
Field direction is parallel with the penetrating shaft of polarizing coating, and corresponding normal refractive index is n1o, work as n1e< n1oWhen, uniaxial C- compensation film is
Negative uniaxial C- compensation film, works as n1e> n1oWhen, uniaxial C- compensation film is positive uniaxial C- compensation film.In the present embodiment
In, since the optical axis 205 of disc-like liquid crystal and the penetrating shaft 301 of light polarizing film are vertical, as the optical axis 205 of disc-like liquid crystal can be at Fig. 5 b
In Z-direction, the penetrating shaft 301 of light polarizing film is in the Y-direction in Fig. 5 b, in other embodiments, the penetrating shaft 301 of light polarizing film
It is vertical with penetrating shaft 301 to meet optical axis 205 for any direction that can be at the X/Y plane in Fig. 4 b.In the present embodiment, light
The optical electric field for learning the normal light of compensation film is oriented parallel to penetrating shaft, and the direction of an electric field of unusual light perpendicular to penetrating shaft, mend by optics
Light polarizing film can be penetrated by repaying only normal light component in film, therefore the second refractive index is the normal refractive index of optical compensation films, this is just
Normal refractive index is less than the refractive index of support membrane, and in one embodiment, uniaxial C- compensation film is negative uniaxial C- compensation film.?
In one embodiment, structure of polarized light further includes the pressure-sensitive adhesive layer being stacked on phase compensation film, and structure of polarized light can by pressure-sensitive adhesive layer
It pastes on the glass substrate.
Invention additionally discloses another structure of polarized light, and in conjunction with shown in Fig. 1 and Fig. 3 b, structure of polarized light includes the successively folded branch set
Support film 100, optical compensation films 200, light polarizing film 300 and phase compensation film 400.Wherein, support membrane 100 include incidence surface 100A and
Light-emitting surface 100B, the light-emitting surface of support membrane 100 are formed with multiple grooves 101, are formed with multiple and groove on optical compensation films 200
The bulge-structure 201 that 101 shapes, size match, bulge-structure 201 are arranged in two-dimensional matrix array, the width of each bulge-structure
Spend (X-direction) and length (Y-direction) respectively less than or close to incident light wavelength, the center spacing between adjacent protrusion structure is less than
Or the opening width equal to single pixel, optical compensation films 200 fit on the light-emitting surface of support membrane 100, and bulge-structure 201
It is completely accommodated in groove 101, support membrane has first refractive index n1, and optical compensation films have the second refractive index n2, the first folding
Rate n1 is penetrated greater than the second refractive index n2.It is to enter light from light substantia compacta when light, which penetrates support membrane 100, enters optical compensation films 200
The process of matter is dredged, therefore diffraction can occur at bulge-structure for light, make each side view angle of the light into two-dimensional surface
Deflection.Since the center spacing of adjacent protrusion iron hook is less than or equal to the opening width of general single pixel, each pixel can be made
Opening is corresponding at least one bulge-structure and deflects to the pixel light.
Invention additionally discloses a kind of display devices, as shown in fig. 6, including backlight module 2 and being placed in backlight module side
Display panel 1, wherein display panel 1 includes structure of polarized light described above.Backlight module 2 is produced for providing light source, light source
Raw incident light, the incident light are concentrated on vertical direction in display panel 1 is incident in the range of low-angle, which can
Less than 30 °.Most of light that display panel 1 receives is vertical incidence light, since there are support membranes and optics in display panel 1
The contact surface of compensation film and optical compensation films and support membrane is formed with bulge-structure, can will be hung down at bulge-structure by diffraction
Straight incident light is deflected, so that positive visual angle energy is assigned to side view angle, improves the image quality at side view angle.The structure of display panel
And the structure of the polarizer in display panel is being described above, details are not described herein again.Wherein, light source can in backlight module 20
For side entering type light source, the upper and lower surface of light guide plate is equipped with strip V-groove, the side wall and side entering type of light guide plate lower surface V-groove
Light source is parallel, and the V-groove of light guide plate upper surface and the V-groove of lower surface are mutually perpendicular to.
In one embodiment, as shown in fig. 7, display panel can be liquid crystal display panel, which includes upper
Polarizer 10, lower polarizer 30 and the liquid crystal layer 20 being folded between polarizer and lower polarizer, liquid crystal layer 20 include base
Plate and the liquid crystal molecule being located between substrate, upper polarisation and/or lower polarisation include above-mentioned structure of polarized light.Incident light is by lower inclined
Become linearly polarized light after tabula rasa, liquid crystal layer 20 can reverse the polarization direction of linearly polarized light, lead to linearly polarized light from upper polarizer
It crosses, to show picture on a display panel.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 its comprising above-mentioned structure of polarized light
His display panel.
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 (10)
1. a kind of structure of polarized light characterized by comprising
Support membrane has first refractive index, and the support membrane includes incidence surface and the light-emitting surface opposite with the incidence surface, described
Multiple grooves are formed on light-emitting surface；
Optical compensation films are formed with multiple bulge-structures to match with the groove shapes, size, the width of the bulge-structure
Degree be less than or close to incident light wavelength, the optical compensation films fit on the light-emitting surface of the support membrane, and the protrusion
Structure is contained in the groove, and the optical compensation films have the second refractive index, and the first refractive index is greater than described second
Refractive index；
Light polarizing film is set on the optical compensation films；
Phase compensation film is set in the light polarizing film.
2. structure of polarized light as described in claim 1, which is characterized in that the width of the bulge-structure is greater than or equal to 300nm,
And it is less than or equal to 1000nm.
3. structure of polarized light as described in claim 1, which is characterized in that the bulge-structure is raised for strip, and the length
Strip bulge structure is arranged side by side.
4. structure of polarized light as described in claim 1, which is characterized in that the bulge-structure is arranged in two-dimensional matrix array, and
The length and width of the bulge-structure be respectively less than or close to incident light wavelength.
5. structure of polarized light as described in claim 1, which is characterized in that the light polarizing film has penetrating shaft, the optical compensation
Film is uniaxial liquid crystal film, and the optical axis of the liquid crystal film is vertical with the penetrating shaft, and second refractive index is the liquid
The normal refractive index of brilliant film.
6. structure of polarized light as claimed in claim 5, which is characterized in that the uniaxial liquid crystal film is uniaxial A- compensation
Film, the uniaxial A- compensation film is interior to be filled with nematic liquid crystal molecule, and the optical axis of the nematic liquid crystal molecule is parallel to institute
State incidence surface and perpendicular to the penetrating shaft, second refractive index is the normal refractive index of the A- compensation film.
7. structure of polarized light as claimed in claim 5, which is characterized in that the uniaxial liquid crystal film is uniaxial C- compensation
Film, is filled with smectic in the uniaxial C- compensation film, the optical axis of the smectic perpendicular to it is described enter
Smooth surface and perpendicular to the penetrating shaft, second refractive index is the normal refractive index of the C- compensation film.
8. structure of polarized light as described in claim 1, which is characterized in that the support membrane include Triafol T support membrane,
Any one in polyethylene terephthalate support membrane, polymethyl methacrylate support membrane.
9. a kind of structure of polarized light characterized by comprising
Support membrane has first refractive index, and the support membrane includes incidence surface and the light-emitting surface opposite with the incidence surface, described
Multiple grooves are formed on light-emitting surface；
Optical compensation films, are formed with multiple bulge-structures to match with the groove shapes, size, and the bulge-structure is in two
Tie up matrix array arrangement, and the length and width of the bulge-structure be respectively less than or close to incident light wavelength, it is described adjacent convex
The opening width that the center spacing between structure is less than or equal to single pixel is played, the optical compensation films fit in the support
On the light-emitting surface of film, and the bulge-structure is contained in the groove, and the optical compensation films have the second refractive index, described
First refractive index is greater than second refractive index；
Light polarizing film is set on the optical compensation films；
Phase compensation film is set in the light polarizing film.
10. a kind of display device, comprising:
Backlight module, for providing light source；
Display panel is placed in the backlight module side, for showing picture；
It is characterized in that, the display panel includes the described in any item structure of polarized light of claim 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161890.9A CN109164531A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light and display device |
| PCT/CN2018/119254 WO2020062558A1 (en) | 2018-09-30 | 2018-12-05 | Polarizing structure and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161890.9A CN109164531A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light and display device |
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| CN109164531A true CN109164531A (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811161890.9A Pending CN109164531A (en) | 2018-09-30 | 2018-09-30 | Structure of polarized light and display device |
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| Country | Link |
|---|---|
| CN (1) | CN109164531A (en) |
| WO (1) | WO2020062558A1 (en) |
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| CN109613640A (en) * | 2019-01-30 | 2019-04-12 | 惠科股份有限公司 | Optical film layer and display device |
| CN109633985A (en) * | 2019-01-30 | 2019-04-16 | 惠科股份有限公司 | Optical film layer and display device |
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| Publication number | Publication date |
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| WO2020062558A1 (en) | 2020-04-02 |
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