CN109613760A - Optical film layer and display device - Google Patents
Optical film layer and display device Download PDFInfo
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- CN109613760A CN109613760A CN201910090513.9A CN201910090513A CN109613760A CN 109613760 A CN109613760 A CN 109613760A CN 201910090513 A CN201910090513 A CN 201910090513A CN 109613760 A CN109613760 A CN 109613760A
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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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
The present invention relates to a kind of optical film layer and display devices.The optical compound film layer includes positive uniaxial optical layer and negative uniaxial optical layer, the ordinary refraction index of negative uniaxial 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；
Negative uniaxial optical layer, including plate-like portion and the multiple and groove type being fitted on the plate-like portion side
The ordinary refraction index of the bulge-structure that shape, size match, the negative uniaxial optical layer is less than the positive uniaxial
The very optical index of optical layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is in incidence
In the wave-length coverage of light.
The very optical index of the positive uniaxial optical layer is 1.0-2.5 in one of the embodiments,；And/or
The ordinary refraction index of the negative uniaxial optical layer is 1.0-2.5.
The very optical index Yu the negative uniaxial of the positive uniaxial optical layer in one of the embodiments,
The difference of the ordinary refraction index of optical 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 quadrangular in one of the embodiments, and the one side of quadrangular is bonded the plate
Portion extends, and the extending direction of multiple bulge-structures is parallel, adjacent two bulge-structure intervals setting.
The bulge-structure is quadrangular in one of the embodiments, and multiple bulge-structures are a burst of in Two-Dimensional Moment
Column 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,；
And/or the material of the negative uniaxial optical layer includes smectic material.
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；
Negative uniaxial optical layer, including plate-like portion and the multiple and groove type being fitted on the plate-like portion side
The ordinary refraction index of the bulge-structure that shape, size match, the negative uniaxial optical layer is less than the positive uniaxial
The very optical index of optical layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure be less than or
Equal to 1000nm；
The very optical index of the positive uniaxial optical layer is 1.0-2.5, and the negative uniaxial optical layer is sought
Ordinary light refractive index is 1.0-2.5, the very optical index of the positive uniaxial optical layer and the negative uniaxial optical layer
Ordinary refraction index difference be 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 negative uniaxial optical layer, negative uniaxial optical layer
Ordinary refraction index be less than the very optical index of positive uniaxial optical layer, and the width of bulge-structure is in the wave of incident light
In long range, 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
Amount distributes 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 negative uniaxial optical layer of an embodiment；
Fig. 4 is the cross-sectional structure schematic diagram of the negative uniaxial optical layer of corresponding diagram 3；
Fig. 5 is the schematic perspective view of the negative uniaxial optical layer of another embodiment；
Fig. 6 is the cross-sectional structure schematic diagram of the negative uniaxial 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.
In the present embodiment, optical film layer 250 includes positive uniaxial optical layer 251 and negative uniaxial 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, and ne1> no1.Extraordinary ray refractive index ne1
For the equivalent refractive index parallel with optical axis when polarization of light direction of positive uniaxial optical layer 251；Ordinary refraction index no1It is positive
The equivalent refractive index vertical with optical axis when polarization of light direction of type uniaxial optical layer 251, when light passes through positive uniaxial optics
Layer 251 can generate birefringent phenomenon.Specifically, xyz coordinate system, nx are established1It is positive uniaxial optical layer 251 in the direction x
Refractive index, ny1Refractive index for positive uniaxial optical layer 251 in the direction y, nz1It is positive uniaxial optical layer 251 in the direction z
Refractive index, the direction z be positive uniaxial optical layer 251 film thickness extending direction (perpendicular to positive uniaxial optical layer 251
Incidence surface), ne1=nx1>no1=ny1Or ne1=ny1>no1=nx1, no1=nz1.In one embodiment, eurymeric list
The ordinary refraction index no of optical axis optical layer 2511For 1.0-2.5.In one embodiment, positive uniaxial optical layer 251
Very optical index ne1For 1.0-2.5.In one embodiment, the material of positive uniaxial optical layer 251 includes but is not limited to
Nematic liquid crystal molecular material.
Wherein, negative uniaxial optical layer 252 has optical anisotropy, has very optical index ne2And ordinary light
Refractive index no2, and ne2< no2.Wherein, extraordinary ray refractive index ne2Work as polarization of light direction for negative uniaxial optical layer 252
The equivalent refractive index parallel with optical axis；Ordinary refraction index no2Work as polarization of light direction and light for negative uniaxial optical layer 252
The vertical equivalent refractive index of axis, when light can generate birefringent phenomenon by negative uniaxial optical layer 252.Specifically, xyz is established
Coordinate system, nx2Refractive index for negative uniaxial optical layer 252 in the direction x, ny2It is negative uniaxial optical layer 252 in the direction y
Refractive index, nz2Refractive index for negative uniaxial optical layer 252 in the direction z, the direction z are negative uniaxial optical layer 252
The extending direction (perpendicular to the light-emitting surface of negative uniaxial optical layer 252) of film thickness, nx=ny (no2)>nz(ne2).In a reality
It applies in example, the very optical index ne of negative uniaxial optical layer 2522For 1.0-2.5.Negative uniaxial optical layer 252 is sought
Ordinary light refractive index no2For 1.0-2.5.In one embodiment, the material of negative uniaxial optical layer 252 includes but is not limited to dish
Shape liquid crystal molecule material.
Specifically, the ordinary refraction index no of negative uniaxial optical layer 2522Less than positive uniaxial optical layer 251
Very optical index ne1.In one embodiment, no2And ne1Difference be 0.01-2.Work as no2And ne1Difference it is bigger, it is easier will
It faces light energy and is assigned to big visual angle.In optical axis direction and positive uniaxial optical layer 251 in negative uniaxial optical layer 252
Liquid crystal molecule optical axis direction it is vertical.In one embodiment, the ordinary refraction index no of negative uniaxial optical layer 2522For
The refractive index in the direction 0/180degree, the very optical index ne of negative uniaxial optical layer 2522For the side 90/270degree
To refractive index.In one embodiment, the ordinary refraction index no of negative uniaxial optical layer 2522For 90/270degree
The refractive index in direction, the very optical index ne of negative uniaxial optical layer 2522For 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, negative uniaxial are formed on the side of positive uniaxial optical layer 251
Optical layer 252 includes that plate-like portion 2521 and multiple and groove shapes, the size that are fitted on 2521 side of plate-like portion match
Bulge-structure 2522, and on the arragement direction of multiple bulge-structures 2522, the wave of the width of bulge-structure 2522 in incident light
In long range.Specifically, the width of bulge-structure 2522 is less than or equal to 1000nm, in one embodiment, bulge-structure 2522
Width be greater than or equal to 300nm, be less than or equal to 1000nm.Due to the ordinary refraction index of negative uniaxial optical layer 252
no2Less than the ordinary refraction index ne of the first uniaxial optical layer1, and the width of bulge-structure 2522 is close to the wavelength of incident light
Size, therefore the interface of groove and bulge-structure 2522 is formed by the close grating interface thin to light of light, inclined in grating interface
The light that shakes generates diffraction phenomenon, thus allows light to be advanced and generates angle change (referring to fig. 2), forms the positive big view of visual angle light type energy distribution
The optical phenomena at angle.Specifically, bulge-structure is in periodic arrangement, i.e., by the diffraction portion of bulge-structure building in periodically row
Column.
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
2r x1, 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, minus monochromatic light
Axis optical layer 252 with a thickness of D1, d1It is not 0, and D1≥d1.Wherein, 2rx1In the wave-length coverage of incident light, 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, negative uniaxial optical layer 252 with a thickness of D2, d2It is not 0, and D2≥d2.Wherein, 2rx2
And 2ry2In the wave-length coverage of incident light, more specifically, 2rx2And 2ry2Respectively less than or it is equal to 1000nm, in an embodiment
In, 2rx2And 2ry2It is all larger than or is equal to 300nm, is less than or equal to 1000nm.In one embodiment, quadrangular is positive tetragonous
Column, 2rx2=2ry2。
Optical film layer provided in this embodiment, including positive uniaxial optical layer 251, negative uniaxial optical layer 252, when
The equivalent refractive index that light passes through positive uniaxial optical layer 251 is ne1, the light is equivalent by negative uniaxial optical layer 252
Refractive index is no2, due to ne1> no2, the interface of positive uniaxial optical layer 251 and negative uniaxial optical layer 252 sees
Be effect that light is generated refraction by optically denser medium directive optically thinner medium, optical film layer makes positive visual angle light type energy point as a result,
Optical phenomena with big visual 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, which passes through minus
The equivalent refractive index of uniaxial optical layer 252 is no2, due to ne1> no2, positive uniaxial optical layer 251 and negative uniaxial
The interface of optical layer 252 makes it is seen that horizontal polarization 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.
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 negative uniaxial optical layer 252 is no2, due to ne1> no2, positive uniaxial optical layer 251 and minus list
The interface of optical axis optical layer 252 is it is seen that orthogonal polarized light is generated the work of diffraction by optically denser medium directive optically thinner medium
With making positive visual angle light type energy distribute 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；
Negative uniaxial optical layer, including plate-like portion and the multiple and groove shapes being fitted on the plate-like portion side,
The ordinary refraction index of the bulge-structure that size matches, the negative uniaxial optical layer is less than the positive uniaxial optics
The very optical index of layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is in incident light
In wave-length coverage.
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 ordinary refraction index of the negative uniaxial 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 difference of the ordinary refraction index of rate and the negative uniaxial 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, and
The one side of quadrangular is bonded the plate-like portion and extends, and the extending direction of multiple bulge-structures is parallel, and adjacent two convex
Play spacing structure setting.
6. optical film layer according to claim 1-4, which is characterized in that the bulge-structure is quadrangular, more
A bulge-structure is 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；And/or the material of the negative uniaxial optical layer includes smectic material
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；
Negative uniaxial optical layer, including plate-like portion and the multiple and groove shapes being fitted on the plate-like portion side,
The ordinary refraction index of the bulge-structure that size matches, the negative uniaxial optical layer is less than the positive uniaxial optics
The very optical index of layer, 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 ordinary light of the negative uniaxial optical layer
Refractive index is 1.0-2.5, the very optical index of the positive uniaxial optical layer and seeking for the negative uniaxial optical layer
Ordinary light specific refractivity 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 |
|---|---|---|---|
| CN201910090513.9A CN109613760A (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
| PCT/CN2019/075437 WO2020155207A1 (en) | 2019-01-30 | 2019-02-19 | Optical film and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090513.9A CN109613760A (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
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| CN109613760A true CN109613760A (en) | 2019-04-12 |
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| CN201910090513.9A Pending CN109613760A (en) | 2019-01-30 | 2019-01-30 | Optical film layer and display device |
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| CN (1) | CN109613760A (en) |
| WO (1) | WO2020155207A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748592A (en) * | 2021-01-20 | 2021-05-04 | Tcl华星光电技术有限公司 | Display panel and display device |
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| WO2020155207A1 (en) | 2020-08-06 |
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Application publication date: 20190412 |