CN109613746A - Optical film layer and display device - Google Patents
Optical film layer and display device Download PDFInfo
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- CN109613746A CN109613746A CN201910090878.1A CN201910090878A CN109613746A CN 109613746 A CN109613746 A CN 109613746A CN 201910090878 A CN201910090878 A CN 201910090878A CN 109613746 A CN109613746 A CN 109613746A
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- layer
- optical
- substrate
- bulge
- positive uniaxial
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
Abstract
The present invention relates to a kind of optical film layer and display devices.The optical film layer includes positive uniaxial optical layer and isotropism optical layer, the refractive index of isotropism optical layer is less than the very optical index of positive uniaxial optical layer, and the width of bulge-structure is in the wave-length coverage of incident light, thus, light will generate diffraction when passing through from the interface of groove and bulge-structure, so that positive visual angle light type energy distributes big visual angle, improve visual angle colour cast.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of optical film layer and display device.
Background technique
Existing large scale liquid crystal display panel generallys use VA (Vertical Alignment, vertical arrangement) liquid crystal display panel
Or IPS (In-Plane Switching, plane conversion) liquid crystal display panel, VA type liquid crystal display panel are deposited compared to IPS liquid crystal display panel
Advantage is obtained in higher production efficiency and low manufacturing cost, but is obtained compared to IPS liquid crystal display panel there are more apparent in optical property
Optical property defect, especially large size panel need biggish visual angle to present in terms of business application.For example, VA type liquid crystal surface
Plate driving is rapidly saturated with voltage in big visual angle brightness and visual angle image quality is caused to dislike when colour cast compared to image quality quality is faced
Change serious, generation visual angle colour cast.
Therefore, existing VA type liquid crystal display panel there are big visual angle image quality to when colour cast compared to facing image quality deterioration
Seriously, visual angle colour cast is led to the problem of.
Summary of the invention
Based on this, it is necessary to provide the optical film layer and display dress of a kind of big visual angle colour cast that can improve display panel
It sets.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
A kind of optical film layer, comprising:
Positive uniaxial optical layer is formed with multiple grooves on the side of the positive uniaxial optical layer；
Isotropism optical layer, including plate-like portion and the multiple and groove type being fitted on the plate-like portion side
The refractive index of the bulge-structure that shape, size match, the isotropism optical layer is less than the positive uniaxial optical layer
Very optical index, on the arragement direction of multiple bulge-structures, the wavelength of the width of the bulge-structure in incident light
In range.
The very optical index of the positive uniaxial optical layer is 1.0-2.5 in one of the embodiments,；And/or
The refractive index of the isotropism optical layer is 1.0-2.5.
The very optical index of the positive uniaxial optical layer and the isotropism light in one of the embodiments,
The specific refractivity for learning layer is 0.01-2.
In one of the embodiments, on the arragement direction of multiple bulge-structures, the width of the bulge-structure
Less than or equal to 1000nm.
The bulge-structure is tetragonous rod structure in one of the embodiments, and described in the one side fitting of quadrangular
Plate-like portion extends, and the extending direction of multiple bulge-structures is parallel, adjacent two bulge-structure intervals setting.
The bulge-structure is tetragonous rod structure in one of the embodiments, and multiple bulge-structures are in Two-Dimensional Moment
Battle array array arrangement, adjacent two bulge-structure intervals setting.
The material of the positive uniaxial optical layer includes nematic liquid crystal molecular material in one of the embodiments,.
A kind of optical film layer, comprising:
Positive uniaxial optical layer is formed with multiple grooves on the side of the positive uniaxial optical layer；
Isotropism optical layer, including plate-like portion and the multiple and groove type being fitted on the plate-like portion side
The refractive index of the bulge-structure that shape, size match, the isotropism optical layer is less than the positive uniaxial optical layer
Very optical index, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is less than or equal to
1000nm；
The very optical index of the positive uniaxial optical layer is 1.0-2.5, the refraction of the isotropism optical layer
Rate is 1.0-2.5, the refractive index of the very optical index of the positive uniaxial optical layer and the isotropism optical layer it
Difference is 0.01-2.
In order to achieve the object of the present invention, the present invention also adopts the following technical scheme that
A kind of display device, comprising:
Backlight module, for providing incident light；
Display panel is placed in above the backlight module, for receiving the incident light and showing picture；
Wherein, the display panel includes:
The first substrate and the second substrate being oppositely arranged；
The first grating layer on the first substrate far from the second substrate side is set；
Display layer between the first substrate and the second substrate is set；
The second grating layer between the display layer and the second substrate is set；
Optical film layer as described above between second grating layer and the second substrate, the eurymeric list are set
Optical axis optical layer is arranged in second grating layer side；
Photoresist layer between the optical film layer and the second substrate is set, or setting in the first substrate and
Photoresist layer between the display layer.
First grating layer includes the multiple bar shapeds to be formed on the first substrate in one of the embodiments,
Metal layer, multiple metal interlevels every and be arranged in parallel；And/or second grating layer includes transparent substrate and is formed in institute
State the metal layer of multiple bar shapeds on transparent substrate, multiple metal interlevels every and be arranged in parallel.
The width of the first grating layer metal layer is 50nm-150nm, the thickness of metal layer in one of the embodiments,
Degree is 100nm-200nm, and the spacing of two adjacent metal layers is 100nm-200nm；The second grating layer metal layer
Width be 50nm-150nm, metal layer with a thickness of 100nm-200nm, the spacing of two adjacent metal layers is
100nm-200nm。
The photoresist layer is arranged between the optical film layer and the second substrate in one of the embodiments, institute
State display panel further include:
Compensation film layer between the display layer and second grating layer is set；And/or
Compensation film layer between the display layer and the first substrate is set.
The photoresist layer is arranged between the first substrate and the display layer in one of the embodiments,；It is described
Display panel further include:
Compensation film layer between the display layer and second grating layer is set；And/or
Compensation film layer between the photoresist layer and the first substrate is set.
Above-mentioned optical film layer, including positive uniaxial optical layer and isotropism optical layer, the folding of isotropism optical layer
The very optical index that rate is less than positive uniaxial optical layer is penetrated, and the width of bulge-structure is in the wave-length coverage of incident light,
Diffraction will be generated when light passes through from the interface of groove and bulge-structure as a result, so that positive visual angle light type energy distribution is big
Visual angle improves visual angle colour cast.
Above-mentioned display device, the backlight module including the high backlight light type output of directive property, and there is big visual angle and color
The display panel improved partially, being thinned.Wherein, on the one hand display panel passes through the setting of optical film layer, can be by positive visual angle
Light type energy be assigned to big visual angle, solve the problems, such as the big visual angle colour cast of display panel；On the other hand, due to the first grating layer and
Second grating layer can make natural light become polarised light, and the polarizer that alternate thicknesses are thicker, and make the thickness of display panel
It is relatively thin, so that display device volume is frivolous, display colour cast rate is low and has high display efficiency, it can be improved the experience of user
Degree.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the optical film layer of an embodiment；
Fig. 2 is the schematic diagram that the interface vertical with light direction of advance generates refraction effect；
Fig. 3 is the schematic perspective view of the isotropism optical layer of an embodiment；
Fig. 4 is the cross-sectional structure schematic diagram of the isotropism optical layer of corresponding diagram 3；
Fig. 5 is the schematic perspective view of the isotropism optical layer of another embodiment；
Fig. 6 is the cross-sectional structure schematic diagram of the isotropism optical layer of corresponding diagram 5；
Fig. 7 is the structural schematic diagram of the display device of an embodiment；
Fig. 8 is the structural schematic diagram of the backlight module of display device shown in Fig. 7；
Fig. 9 is the structural schematic diagram of the display panel of an embodiment in display device shown in Fig. 7；
Figure 10 is the structural schematic diagram of the display panel of an embodiment in display device shown in Fig. 7；
Figure 11 is the structural schematic diagram of the first grating layer of an embodiment；
Figure 12 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 9；
Figure 13 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 9；
Figure 14 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 9；
Figure 15 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 10；
Figure 16 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 10；
Figure 17 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 10.
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 herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
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
Body embodiment purpose, it is not intended that in limitation the present invention.
It is the structural schematic diagram of the optical film layer in the present embodiment referring to Fig. 1, Fig. 1.
In the present embodiment, optical film layer 250 includes positive uniaxial optical layer 251 and isotropism optical layer 252.
Wherein, multiple grooves are formed on 251 side of positive uniaxial optical layer, positive uniaxial optical layer 251 has
Optical anisotropy has very optical index ne1With ordinary refraction index no1.Extraordinary ray refractive index ne1For eurymeric monochromatic light
The equivalent refractive index parallel with optical axis when polarization of light direction of axis optical layer 251；Ordinary refraction index no1For positive uniaxial light
The equivalent refractive index vertical with optical axis when polarization of light direction of layer 251 is learned, when light can be generated by positive uniaxial optical layer 251
Birefringent phenomenon.Ne in positive uniaxial optical layer 2511> no1.Specifically, xyz coordinate system is established, nx is positive uniaxial light
Layer 251 is learned in the refractive index in the direction x, ny is positive uniaxial optical layer 251 in the refractive index in the direction y, and nz is positive uniaxial
For optical layer 251 in the refractive index in the direction z, the direction z is the extending direction of the film thickness of positive uniaxial optical layer 251 (perpendicular to just
The incidence surface of type uniaxial optical layer 251), ne1=nx > no1=ny or ne1=ny > no1=nx, no1=nz.In a reality
It applies in example, the ordinary refraction index no of positive uniaxial optical layer 2511For 1.0-2.5.In one embodiment, eurymeric monochromatic light
The very optical index ne of axis optical layer 2511For 1.0-2.5.In one embodiment, the material of positive uniaxial optical layer 251
Material includes but is not limited to nematic liquid crystal molecular material.
Wherein, isotropism optical layer 252 has optical isotropy, and the refractive index of all directions is identical.Implement at one
In example, the refractive index ns of isotropism optical layer 2522For 1.0-2.5.In one embodiment, isotropism optical layer 252
Material is isotropic refraction materials, can be the organic transparent material or inorganic that plat structure coating is done on photoresist
Transparent material.
Specifically, the refractive index ns of isotropism optical layer 2522Non- ordinary light less than positive uniaxial optical layer 251 is rolled over
Penetrate rate ne1.In one embodiment, ne1And ns2Difference be 0.01-2.Work as ne1And ns2Difference it is bigger, it is easier to face luminous energy
Amount is assigned to big visual angle.In one embodiment, the ordinary refraction index no of positive uniaxial optical layer 2511It is 0/
The refractive index in the direction 180degree, the very optical index ne of positive uniaxial optical layer 2511For the direction 90/270degree
Refractive index.In one embodiment, the ordinary refraction index no of positive uniaxial optical layer 2511For the side 90/270degree
To refractive index, the very optical index ne of positive uniaxial optical layer 2511For the refractive index in the direction 0/180degree.Its
In, what the face that the direction 0/180degree and the direction 90/270degree are constituted was parallel to positive uniaxial optical layer 251 enters light
Face.
In embodiments of the present invention, multiple grooves, isotropism light are formed on the side of positive uniaxial optical layer 251
Layer 252 matches convex including plate-like portion 2521 and multiple and groove shapes, the size that are fitted on 2521 side of plate-like portion
Structure 2522 is played, and on the arragement direction of multiple bulge-structures 2522, the wavelength of the width of bulge-structure 2522 in incident light
In range.Specifically, the width of bulge-structure 2522 is less than or equal to 1000nm.In one embodiment, bulge-structure 2522
Width is greater than or equal to 300nm, is less than or equal to 1000nm.Due to the refractive index ns of isotropism optical layer 2522Less than eurymeric
The ordinary refraction index ne of uniaxial optical layer 2511, and the width of bulge-structure 2522 close to incident light wavelength size,
Therefore the interface of groove and bulge-structure 2522 is formed by the close grating interface dredged to light of light, is generated in grating interface polarised light
Thus diffraction phenomenon allows light to be advanced and generates angle change (referring to fig. 2), forms the optics that positive visual angle light type energy distributes big visual angle
Phenomenon.Specifically, bulge-structure is in periodic arrangement, i.e., is in periodic arrangement by the diffraction portion of bulge-structure building.
In one embodiment, referring to Fig. 3, bulge-structure 2522 is tetragonous rod structure, and tetragonous rod structure has multiple sides
Face, and the one side fitting plate-like portion 2521 of tetragonous rod structure extends, the extending direction of multiple bulge-structures 2522 is parallel, adjacent
Two bulge-structures 2522 be spaced setting.Specifically, please also refer to Fig. 4, the width for being bonded the side of plate-like portion 2521 is
2rx1, the distance between the center of side of adjacent two bulge-structures 2522 fitting plate-like portion 2521 is Px1, Px1≥
2rx1, work as Px1=2rx1When, two adjacent bulge-structures are bonded setting.Bulge-structure 2522 with a thickness of d1, isotropism
Optical layer 252 with a thickness of D1, d1It is not 0, and D1≥d1.Wherein, 2rx1In the wave-length coverage of incident light, more specifically,
2rx1Less than or equal to 1000nm.In one embodiment, 2rx1More than or equal to 300nm, it is less than or equal to 1000nm.
In one embodiment, referring to Fig. 5, bulge-structure 2522 is tetragonous rod structure, and multiple bulge-structures 2522 are in two
Matrix array arrangement is tieed up, two adjacent bulge-structures 2522 are spaced setting, to be more effectively assigned to positive visual angle light energy
Two-dimensional directional, so that full view is ornamental evener.Specifically, please also refer to Fig. 6, in the x direction, fitting plate-like portion 2521
The width of side is 2rx2, the distance between the center of side of adjacent two bulge-structures 2522 fitting plate-like portion 2521 is
Px2, Px2≥2r x2, work as Px2=2r x2When, two adjacent bulge-structures are bonded setting in the x direction.In y-direction, it pastes
The width for closing the side of plate-like portion 2521 is 2ry2, in the side of adjacent two bulge-structures 2522 fitting plate-like portion 2521
The distance between heart is Py2, Py2≥2ry2, work as Py2=2ry2When, two adjacent bulge-structures are bonded setting in y-direction.
Bulge-structure 2522 with a thickness of d2, isotropism optical layer 252 with a thickness of D2, d2It is not 0, and D2≥d2.Wherein, 2rx2With
2ry2In the wave-length coverage of incident light, more specifically, 2rx2And 2ry2Respectively less than or equal to 1000nm.In one embodiment,
2rx2And 2ry2It is all larger than or is equal to 300nm, is less than or equal to 1000nm.In one embodiment, quadrangular is square prism,
2rx2=2ry2。
Optical film layer provided in this embodiment, including positive uniaxial optical layer 251, isotropism optical layer 252, work as light
Equivalent refractive index by positive uniaxial optical layer 251 is ne1, which passes through the equivalent refraction of isotropism optical layer 252
Rate is ns2, due to ne1> ns2, the interface of positive uniaxial optical layer 251 and isotropism optical layer 252 is it is seen that light
The effect of diffraction is generated by optically denser medium directive optically thinner medium, optical film layer makes the positive big view of visual angle light type energy distribution as a result,
The optical phenomena at angle improves visual angle colour cast.
It is the structural schematic diagram of the display device in the present embodiment referring to Fig. 7, Fig. 7.
In this example it is shown that device 10 includes backlight module 100 and display panel 200.Wherein, backlight module 100
Offer collimates out light back light (collimate light emitting BL), so as to concentrate on positive visual angle defeated for the energy of light
Out.
In embodiments of the present invention, referring to Fig. 8, the backlight light type output that backlight module 100 has directive property high, including it is anti-
Penetrate piece 110, light guide plate 120, prism film 130 and LED light source 140, reflector plate 110 and light guide plate 120, prism film 130 successively layer
Folded, light guide plate 120 has incidence surface 121, and LED light source 140 is oppositely arranged with incidence surface 121, and light guide plate 120 is close to reflector plate
110 side offers the first groove 122 of bar shaped, and the section of the first groove 122 is V-shaped, the extending direction of the first groove 122
Vertical with the light direction of LED light source 140, light guide plate 120 offers the second groove of bar shaped close to the side of prism film 130
123, the section of the second groove 123 is V-shaped, and the extending direction of the second groove 123 is parallel with the light direction of LED light source 140.Into
One step, the prism side of prism film 130 is layered on light guide plate 120.
In embodiments of the present invention, referring to Fig. 9 and Figure 10, Fig. 9 and Figure 10 are the structure of the display panel in the present embodiment
Schematic diagram.
In the present embodiment, display panel 200 includes the first grating layer 210, first substrate 220, display layer 230, the second light
Grid layer 240, optical film layer 250, photoresist layer 260 and the second substrate 270.
Specifically, first substrate 220 and the second substrate 270 are oppositely arranged；First grating layer 210 is arranged in first substrate
Far from 270 side of the second substrate on 220；Display layer 230 is arranged between first substrate 220 and the second substrate 270；Second grating
Layer 240 is arranged between display layer 230 and the second substrate 270；Optical film layer 250 is arranged in the second grating layer 240 and the second base
Between plate 270, wherein positive uniaxial optical layer is arranged in 240 side of the second grating layer；Photoresist layer 260 is arranged in optical film layer
Between 250 and the second substrate 270, or it is arranged between first substrate 220 and display layer 230.
That is, in one embodiment, referring to Fig. 9, display panel 200 includes successively the first grating layer 210 of lamination setting, the
One substrate 220, display layer 230, the second grating layer 240, optical film layer 250, photoresist layer 260 and the second substrate 270；Another
In a embodiment, referring to Figure 10, display panel 200 includes the first grating layer 210, the first substrate 220, light of successively lamination setting
Resistance layer 260, display layer 230, the second grating layer 240, optical film layer 250 and the second substrate 270.
In embodiments of the present invention, the first grating layer 210 is arranged on first substrate 220 far from 270 side of the second substrate,
Natural light can be become polarised light by the first grating layer 210.Wherein, the thickness of the first grating layer 210 is generally less than 20 μm.
Specifically, referring to Figure 11, the first grating layer 210 includes transparent substrate 2101 and is formed on transparent substrate 2101
The metal layer 2102 of multiple bar shapeds, multiple metal layers 2102 are spaced and are arranged in parallel.Transparent substrate 2101 includes but is not limited to glass
Glass substrate, silica gel substrate, silicon dioxide substrate, silicon nitride board, polymethyl methacrylate base plate and poly terephthalic acid second
One of diester substrate.Metal layer 2102 includes but is not limited to gold, aluminium and copper.Metal layer 2102 is formed in transparent substrate 2101
On, multiple metal layers 2102 are spaced along a straight line and uniformly arrange, and the extending direction of multiple metal layers 2102 is parallel to each other, and
Form grating.Further, the width of metal layer 2102 is 50nm-150nm；Metal layer 2102 with a thickness of 100nm-200nm；
The spacing of two adjacent metal layers 2102 is 100nm-200nm.
In embodiments of the present invention, the first grating layer 210 divides the electricity vertical with the extending direction of metal layer for direction of vibration
Magnetic wave and the direction of vibration electromagnetic wave parallel with the extending direction of metal layer, the first grating layer 210 can absorb or reflect electromagnetism
The wave oscillating component electromagnetic wave component parallel with metal layer extending direction, only electromagnetic wave vibration component and metal layer extending direction
Vertical electromagnetic wave component penetrates, and obtains effect identical with polarizer, only passes through the polarization perpendicular to polarizer draw direction
Light.
Specifically, light is by horizontal polarization (the electric field oscillation direction direction 0/180degree) and vertical polarization (electric field oscillation side
To the direction 90/270degree) it constitutes, the first grating layer 210 has the effect absorbed with penetrating for polarised light.When the first light
When the arragement direction of the metal layer of grid layer 210 is parallel to the direction 0/180degree, the extension of the metal layer of the first grating layer 210
It is oriented parallel to the direction 90/270degree, it is contemplated that horizontal polarization light can pass through the first grating layer 210；When the first grating layer
When the arragement direction of 210 metal layer is parallel to the direction 90/270degree, the extending direction of the metal layer of the first grating layer 210
It is parallel to the direction 0/180degree, it is contemplated that orthogonal polarized light can pass through the first grating layer 210.First grating layer 210 as a result,
The lower polarizer (traditional polarizer thickness in monolayer is about 200 μm) in traditional structure can be replaced, make display panel 200
Thinner thickness.
In the embodiment of the present invention, first substrate 220 is oppositely arranged with the second substrate 270, first substrate 220 and the second substrate
270 material with no restrictions, can specifically select glass substrate.Display layer 230 includes liquid crystal material layer and is arranged in liquid crystal material
Electrode layer in bed of material upper and lower surface, wherein the material of electrode layer is preferably tin indium oxide.
In the embodiment of the present invention, the second grating layer 240 includes the multiple bar shapeds of transparent substrate and formation on the transparent substrate
Metal layer, multiple metal interlevels every and be arranged in parallel.Transparent substrate includes but is not limited to glass substrate, silica gel substrate, dioxy
One of SiClx substrate, silicon nitride board, polymethyl methacrylate base plate and polyethylene terephthalate substrate.Metal
Layer includes but is not limited to gold, aluminium and copper.Metal layer is formed on the transparent substrate, and multiple metal layers are spaced along a straight line and uniformly arrange
Cloth, and the extending direction of multiple metal layers is parallel to each other, and form grating.Further, the width of metal layer is 50nm-
150nm；Metal layer with a thickness of 100nm-200nm；The spacing of two adjacent metal layers is 100nm-200nm.Further,
First grating layer 210 of the second grating layer 240 and optical film layer 250 is oppositely arranged, i.e. multiple metal layers of the second grating layer 240
It is corresponding with multiple metal layers of the first grating layer 210.
Second grating layer 240 is similar to the structure and function of the first grating layer 210, has absorption with penetrating for polarised light
Effect, traditional upper polarizer can be substituted, keep display panel 200 thinner.
When the arragement direction of the metal layer of the second grating layer 240 is parallel to the direction 0/180degree, the second grating layer
The extending direction of 240 metal layer is parallel to the direction 90/270degree, it is contemplated that horizontal polarization light can pass through the second grating layer
240, the equivalent refractive index which passes through positive uniaxial optical layer 251 is ne1, the horizontal polarization light by it is each to
The equivalent refractive index of same sex optical layer 252 is ns2, due to ne1> ns2, positive uniaxial optical layer 251 and isotropism optics
The interface of layer 252 makes to face it is seen that horizontal polarization light is generated the effect of diffraction by optically denser medium directive optically thinner medium
Angle light type energy distributes the optical phenomena at big visual angle.
When the arragement direction of the metal layer of the second grating layer 240 is parallel to the direction 90/270degree, when the second light
The extending direction of the metal layer of grid layer 240 is parallel to the direction 0/180degree.It is expected that orthogonal polarized light can be by when the second light
Grid layer 240, the equivalent refractive index which passes through positive uniaxial optical layer 251 are ne1, which passes through
The equivalent refractive index of isotropism optical layer 252 is ns2, due to ne1> ns2, positive uniaxial optical layer 251 and isotropism
The interface of optical layer 252 makes it is seen that orthogonal polarized light is generated the effect of diffraction by optically denser medium directive optically thinner medium
Positive visual angle light type energy distributes the optical phenomena at big visual angle.
In the embodiment of the present invention, optical film layer 250 is referring to the associated description of a upper embodiment, and details are not described herein.Optics
Film layer 250 can distribute positive visual angle light type energy to big visual angle, improve visual angle colour cast.
In the embodiment of the present invention, photoresist layer 260 is used to provide form and aspect for display panel, and display panel is made to form colored show
Show picture.Photoresist layer 260 can be set between the second grating layer 240 and the second substrate 270, or also can be set first
Between substrate 220 and display layer 230.
Please also refer to Figure 12-Figure 14 (clathrum is compensation film layer in figure), in one embodiment, when photoresist layer 260
When being arranged between the second grating layer 240 and the second substrate 270, display panel can also include: setting in display layer 230 and the
Compensation film layer between two grating layers 240；And/or the compensation film layer between display layer 230 and first substrate 220 is set.
Please also refer to Figure 15-Figure 17 (clathrum is compensation film layer in figure), in one embodiment, when photoresist layer 260
When being arranged between first substrate 220 and display layer 230, display panel can also include: to be arranged in display layer 230 and the second light
Compensation film layer between grid layer 240；And/or the compensation film layer between photoresist layer 260 and first substrate 220 is set.
It should be noted that display panel 200 is not limited to above-mentioned stepped construction, different layers can increase according to different demands
The material of specific function for example, increasing other function material in single function film layer, and obtains multi-functional film layer.In addition, display
The lamination order of each film layer can be changed according to required function in panel 200, at the same time it can also add as needed
Enter other function film layer etc..
Display device 10 provided in this embodiment, the backlight module 100 including the high backlight light type output of directive property, and
With big visual angle and display panel 200 that colour cast is improved, is thinned.Wherein, 200 one side of display panel passes through optical film
The setting of layer 250, can be assigned to big visual angle for the light type energy at positive visual angle, solve the problems, such as the big visual angle colour cast of display panel 200,
Without dividing each sub-pixel for main pixel and sub-pixel structure, redesign metal routing or thin film transistor (TFT) member are avoided
Part drives sub-pixel and light-permeable open region sacrifice, to have the high saturating rate of panel, increases out light energy, Ke Yida
To energy-efficient benefit, while maintaining the display resolution and driving frequency of display panel 200；On the other hand, the first grating layer
210 and second grating layer 240 so that natural light is become polarised light, and the polarizer that alternate thicknesses are thicker, and make display surface
The thinner thickness of plate 200, so that 10 volume of display device is frivolous, display colour cast rate is low and has high display efficiency, Neng Gouti
The Experience Degree of high user.
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 (13)
1. a kind of optical film layer characterized by comprising
Positive uniaxial optical layer is formed with multiple grooves on the side of the positive uniaxial optical layer；
Isotropism optical layer, including plate-like portion and multiple and the groove shapes, ruler that are fitted on the plate-like portion side
The very little bulge-structure to match, the refractive index of the isotropism optical layer are less than the non-ordinary light of the positive uniaxial optical layer
Refractive index, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is in the wave-length coverage of incident light.
2. optical film layer according to claim 1, which is characterized in that the very anaclasis of the positive uniaxial optical layer
Rate is 1.0-2.5；And/or the refractive index of the isotropism optical layer is 1.0-2.5.
3. optical film layer according to claim 1, which is characterized in that the very anaclasis of the positive uniaxial optical layer
The specific refractivity of rate and the isotropism optical layer is 0.01-2.
4. optical film layer according to claim 1, which is characterized in that on the arragement direction of multiple bulge-structures,
The width of the bulge-structure is less than or equal to 1000nm.
5. optical film layer according to claim 1-4, which is characterized in that the bulge-structure is quadrangular knot
Structure, and the one side of quadrangular is bonded the plate-like portion and extends, the extending direction of multiple bulge-structures is parallel, and adjacent two
A bulge-structure interval setting.
6. optical film layer according to claim 1-4, which is characterized in that the bulge-structure is quadrangular knot
Structure, multiple bulge-structures are arranged in two-dimensional matrix array, adjacent two bulge-structure intervals setting.
7. optical film layer according to claim 1-4, which is characterized in that the material of the positive uniaxial optical layer
Material includes nematic liquid crystal molecular material.
8. a kind of optical film layer characterized by comprising
Positive uniaxial optical layer is formed with multiple grooves on the side of the positive uniaxial optical layer；
Isotropism optical layer, including plate-like portion and multiple and the groove shapes, ruler that are fitted on the plate-like portion side
The very little bulge-structure to match, the refractive index of the isotropism optical layer are less than the non-ordinary light of the positive uniaxial optical layer
Refractive index, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is less than or equal to 1000nm；
Wherein, the very optical index of the positive uniaxial optical layer is 1.0-2.5, the refraction of the isotropism optical layer
Rate is 1.0-2.5, the refractive index of the very optical index of the positive uniaxial optical layer and the isotropism optical layer it
Difference is 0.01-2.
9. a kind of display device characterized by comprising
Backlight module, for providing incident light；
Display panel is placed in above the backlight module, for receiving the incident light and showing picture；
Wherein, the display panel includes:
The first substrate and the second substrate being oppositely arranged；
The first grating layer on the first substrate far from the second substrate side is set；
Display layer between the first substrate and the second substrate is set；
The second grating layer between the display layer and the second substrate is set；
Be arranged between second grating layer and the second substrate such as the described in any item optical films of claim 1-8
Layer, the positive uniaxial optical layer are arranged in second grating layer side；
Photoresist layer between the optical film layer and the second substrate is set, or setting is in the first substrate and described
Photoresist layer between display layer.
10. display device according to claim 9, which is characterized in that first grating layer includes being formed in described the
The metal layer of multiple bar shapeds on one substrate, multiple metal interlevels every and be arranged in parallel；And/or the second grating layer packet
The metal layer of multiple bar shapeds for including transparent substrate and being formed on the transparent substrate, multiple metal interlevels every and set in parallel
It sets.
11. display device according to claim 10, which is characterized in that the width of the first grating layer metal layer is
50nm-150nm, metal layer with a thickness of 100nm-200nm, the spacing of two adjacent metal layers is 100nm-200nm；
The width of the second grating layer metal layer be 50nm-150nm, metal layer with a thickness of 100nm-200nm, two adjacent institutes
The spacing for stating metal layer is 100nm-200nm.
12. according to the described in any item display devices of claim 9-11, which is characterized in that the photoresist layer is arranged in the light
It learns between film layer and the second substrate, the display panel further include:
Compensation film layer between the display layer and second grating layer is set；And/or
Compensation film layer between the display layer and the first substrate is set.
13. according to the described in any item display devices of claim 9-11, which is characterized in that photoresist layer setting is described the
Between one substrate and the display layer；The display panel further include:
Compensation film layer between the display layer and second grating layer is set；And/or
Compensation film layer between the photoresist layer and the first substrate is set.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090878.1A CN109613746A (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
| PCT/CN2019/076457 WO2020155272A1 (en) | 2019-01-30 | 2019-02-28 | Optical film layer and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090878.1A CN109613746A (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109613746A true CN109613746A (en) | 2019-04-12 |
Family
ID=66021656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910090878.1A Pending CN109613746A (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109613746A (en) |
| WO (1) | WO2020155272A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195248A (en) * | 2017-07-20 | 2017-09-22 | 京东方科技集团股份有限公司 | Optical module and display device |
| CN109085718A (en) * | 2018-10-30 | 2018-12-25 | 惠科股份有限公司 | Optical compound film and display panel |
| CN109143675A (en) * | 2018-09-30 | 2019-01-04 | 惠科股份有限公司 | Structure of polarized light and display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007256761A (en) * | 2006-03-24 | 2007-10-04 | Nippon Oil Corp | Elliptic polarizing plate and manufacturing method therefor, and liquid crystal display device using same |
| CN105829924B (en) * | 2014-01-21 | 2018-10-19 | 株式会社巴川制纸所 | Anisotropic optical film |
-
2019
- 2019-01-30 CN CN201910090878.1A patent/CN109613746A/en active Pending
- 2019-02-28 WO PCT/CN2019/076457 patent/WO2020155272A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195248A (en) * | 2017-07-20 | 2017-09-22 | 京东方科技集团股份有限公司 | Optical module and display device |
| CN109143675A (en) * | 2018-09-30 | 2019-01-04 | 惠科股份有限公司 | Structure of polarized light and display device |
| CN109085718A (en) * | 2018-10-30 | 2018-12-25 | 惠科股份有限公司 | Optical compound film and display panel |
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| Publication number | Publication date |
|---|---|
| WO2020155272A1 (en) | 2020-08-06 |
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