CN109613745A - Optical film layer display device - Google Patents
Optical film layer display device Download PDFInfo
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- CN109613745A CN109613745A CN201910090537.4A CN201910090537A CN109613745A CN 109613745 A CN109613745 A CN 109613745A CN 201910090537 A CN201910090537 A CN 201910090537A CN 109613745 A CN109613745 A CN 109613745A
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- layer
- uniaxial optical
- uniaxial
- optical layer
- bulge
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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.Very optical index of the ordinary refraction index of second uniaxial optical layer of the optical film layer less than the first uniaxial optical layer, and the width of bulge-structure is in the wave-length coverage of incident light, 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；First grating layer of the optical film layer is layered on side of the second uniaxial optical layer far from the first uniaxial optical layer, or it is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer, natural light can be made to become polarised light, and the polarizer that alternate thicknesses are thicker.Above-mentioned optical film layer can not only improve the big visual angle colour cast of display panel as a result, but also can make display panel thinner thickness.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of optical film layer 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, exemplary VA type liquid crystal display panel there are big visual angle image quality to when colour cast compared to face image quality quality dislike
Change seriously, leads to the problem of visual angle colour cast.
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:
First uniaxial optical layer is formed with multiple grooves on the side of the first uniaxial optical layer；
Second 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 second uniaxial optical layer is less than first uniaxial
The extraordinary ray refractive index of optical layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is entering
It penetrates in the wave-length coverage of light；
First grating layer is layered in side of the second uniaxial optical layer far from the first uniaxial optical layer
On；Or it is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer.
The extraordinary ray refractive index of the first uniaxial optical layer is 1.0-2.5 in one of the embodiments,；With/
Or, the ordinary refraction index of the second uniaxial optical layer is 1.0-2.5.
The extraordinary ray refractive index of the first uniaxial optical layer and second monochromatic light in one of the embodiments,
The difference of the ordinary refraction index of axis 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 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 first uniaxial optical layer includes nematic liquid crystal molecular material in one of the embodiments,；
And/or the material of the second uniaxial optical layer includes nematic liquid crystal molecular material.
First grating layer is layered in the second uniaxial optical layer far from described in one of the embodiments,
On the side of one uniaxial optical layer, first grating layer includes transparent substrate and is formed in multiple on the transparent substrate
The metal layer of bar shaped, multiple metal interlevels every and be arranged in parallel；Or
First grating layer is embedded in one of the second uniaxial optical layer far from the first uniaxial optical layer
On side, first grating layer includes the metal layer for the multiple bar shapeds being formed on the second uniaxial optical layer side, more
A metal interlevel every and be arranged in parallel.
The width of the metal layer is 50nm-150nm, the thickness of each metal layer in one of the embodiments,
For 100nm-200nm, the spacing of two adjacent metal layers is 100nm-200nm.
A kind of optical film layer characterized by comprising
First uniaxial optical layer is formed with multiple grooves on the side of the first uniaxial optical layer；
Second 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 second uniaxial optical layer is less than first uniaxial
The extraordinary ray refractive index of optical layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is less than
Or it is equal to 1000nm；
First grating layer is layered in side of the second uniaxial optical layer far from the first uniaxial optical layer
On；Or it is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer；
The extraordinary ray refractive index of the first uniaxial optical layer is 1.0-2.5, the second uniaxial optical layer
Ordinary refraction index is 1.0-2.5, the extraordinary ray refractive index of the first uniaxial optical layer and the second uniaxial light
The difference for learning the ordinary refraction index of layer is 0.01-2.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
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:
Optical film layer as described above；
First substrate on side of the optical film layer far from the first uniaxial optical layer is set；
The second substrate being oppositely arranged with the first substrate；
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；
Photoresist layer between second grating layer and the second substrate is set, or is arranged in the first substrate
Photoresist layer between the display layer.
The photoresist layer is arranged between second grating layer and the second substrate in one of the embodiments,
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.
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 the first uniaxial optical layer, the second uniaxial optical layer and the first grating layer, second is single
The ordinary refraction index of optical axis optical layer is less than the very optical index of the first uniaxial optical layer, and the width of bulge-structure exists
In the wave-length coverage of incident light, 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, improves visual angle colour cast；First grating layer is layered in the second uniaxial optical layer far from the first monochromatic light
It on the side of axis optical layer, or is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer, can make
Natural light becomes polarised light, and the polarizer that alternate thicknesses are thicker.Above-mentioned optical film layer can not only improve display panel as a result,
Big visual angle colour cast, but also display panel thinner thickness can be made.
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, display panel, can be by the light type at positive visual angle by the setting of optical film layer
Energy is assigned to big visual angle, solves the problems, such as the big visual angle colour cast of display panel；In addition, due to the first grating layer and the second grating layer
Natural light can be set to become polarised light, and the polarizer that alternate thicknesses are thicker, and make the thinner thickness of display panel, thus aobvious
Showing device volume is frivolous, display colour cast rate is low and has high display efficiency, can be improved the Experience Degree of user.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the optical film layer of an embodiment；
Fig. 2 is the structural schematic diagram of the optical film layer of an embodiment；
Fig. 3 is the schematic diagram that the interface vertical with light direction of advance generates refraction effect；
Fig. 4 is the schematic perspective view of the second uniaxial optical layer of an embodiment；
Fig. 5 is the cross-sectional structure schematic diagram of the second uniaxial optical layer of corresponding diagram 4；
Fig. 6 is the schematic perspective view of the second uniaxial optical layer of another embodiment；
Fig. 7 is the cross-sectional structure schematic diagram of the second uniaxial optical layer of corresponding diagram 6；
Fig. 8 is the structural schematic diagram of the first grating layer of optical film layer shown in Fig. 2；
Fig. 9 is the structural schematic diagram of the display device of an embodiment；
Figure 10 is the structural schematic diagram of the backlight module of display device shown in Fig. 9；
Figure 11 is the structural schematic diagram of the display panel of an embodiment in display device shown in Fig. 9；
Figure 12 is the structural schematic diagram of the display panel of an embodiment in display device shown in Fig. 9；
Figure 13 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 11；
Figure 14 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 11；
Figure 15 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 11；
Figure 16 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 12；
Figure 17 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 12；
Figure 18 is the structural schematic diagram of the display panel of another embodiment of corresponding diagram 12.
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.
Referring to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 is the structural schematic diagram of the optical film layer in the present embodiment.
In the present embodiment, optical film layer 210 include the first uniaxial optical layer 211, the second uniaxial optical layer 212 with
And first grating layer 213.Wherein, the first grating layer stackup 213 is in the second uniaxial optical layer far from the first uniaxial optical layer
(referring to Fig. 1) on 211 side；Or it is embedded in side of the second uniaxial optical layer 212 far from the first uniaxial optical layer 211
Upper (referring to fig. 2).
Wherein, multiple grooves are formed on 211 side of the first uniaxial optical layer, the first uniaxial optical layer 211 has
Optical anisotropy has very optical index ne1With ordinary refraction index no1.Extraordinary ray refractive index ne1For the first monochromatic light
The equivalent refractive index parallel with optical axis when polarization of light direction of axis optical layer 211；Ordinary refraction index no1For the first uniaxial light
The equivalent refractive index vertical with optical axis when polarization of light direction of layer 211 is learned, when light can be generated by the first uniaxial optical layer 211
Birefringent phenomenon.
In one embodiment, ne1> no1, i.e. the first uniaxial optical layer 211 is positive uniaxial optical layer.Specifically
Xyz coordinate system, nx are established in ground1Refractive index for the first uniaxial optical layer 211 in the direction x, ny1For the first uniaxial optical layer
211 the direction y refractive index, nz1Refractive index for the first uniaxial optical layer 211 in the direction z, the direction z are the first uniaxial
The extending direction (perpendicular to the incidence surface of the first uniaxial optical layer 211) of the film thickness of optical layer 211, ne1=nx1>no1=ny1
Or ne1=ny1>no1=nx1, no1=nz1.In one embodiment, the very optical index of the first uniaxial optical layer 211
ne1For 1.0-2.5, ordinary refraction index no1For 1.0-2.5.In one embodiment, the material of the first uniaxial optical layer 211
Including but not limited to nematic liquid crystal molecular material.
Wherein, the second uniaxial optical layer 212 has optical anisotropy, has very optical index ne2And ordinary light
Refractive index no2.Extraordinary ray refractive index ne2It is the second uniaxial optical layer 212 when equivalent parallel with optical axis in polarization of light direction
Refractive index；Ordinary refraction index no2For the second uniaxial optical layer 212 equivalent refraction vertical with optical axis when polarization of light direction
Rate, when light can generate birefringent phenomenon by the second uniaxial optical layer 212.
In one embodiment, ne2>no2, i.e. the second uniaxial optical layer 212 is positive uniaxial optical layer.Specifically,
Establish xyz coordinate system, nx2Refractive index for the second uniaxial optical layer 212 in the direction x, ny2For the second uniaxial optical layer 212
Refractive index in the direction y, nz2Refractive index for the second uniaxial optical layer 212 in the direction z, the direction z are the second uniaxial optics
The extending direction (perpendicular to the light-emitting surface of the second uniaxial optical layer 212) of the film thickness of layer 212, ne2=nx2>no2=ny2Or
ne2=ny2>no2=nx2, no2=nz2.In one embodiment, the very optical index ne of the second uniaxial optical layer 2122
For 1.0-2.5, ordinary refraction index no2For 1.0-2.5.In one embodiment, the material packet of the second uniaxial optical layer 212
It includes but is not limited to nematic liquid crystal molecular material.
Specifically, the ordinary refraction index no of the second uniaxial optical layer 2122Less than the first uniaxial optical layer 211
Very optical index ne1.Specifically, the very optical index ne of the first uniaxial optical layer 2111With the second uniaxial optical layer
212 ordinary refraction index no2Difference be 0.01-2.Work as ne1And no2Difference it is bigger, the easier light energy that will face is assigned to greatly
Visual angle.More specifically, the optical axis side in optical axis direction and the first uniaxial optical layer 211 in the second uniaxial optical layer 212
To vertical.In one embodiment, the ordinary refraction index no of the second uniaxial optical layer 2122For the direction 0/180degree
Refractive index, the very optical index ne of the second uniaxial optical layer 2122For the refractive index in the direction 90/270degree.At one
In embodiment, the ordinary refraction index no of the second uniaxial optical layer 2122For the refractive index in the direction 90/270degree, second
The very optical index ne of uniaxial optical layer 2122For the refractive index in the direction 0/180degree.Wherein, the side 0/180degree
The incidence surface of the first uniaxial optical layer 211 is parallel to the face constituted with the direction 90/270degree.
In embodiments of the present invention, multiple grooves, the second uniaxial are formed on the side of the first uniaxial optical layer 211
Optical layer 212 includes that plate-like portion 2121 and multiple and groove shapes, the size that are fitted on 2121 side of plate-like portion match
Bulge-structure 2122, and on the arragement direction of multiple bulge-structures 2122, the wave of the width of bulge-structure 2122 in incident light
In long range.Specifically, the width of bulge-structure 2122 is less than or equal to 1000nm, in one embodiment, bulge-structure 2122
Width be greater than or equal to 300nm, be less than or equal to 1000nm.Due to the ordinary refraction index of the second uniaxial optical layer 212
no2Less than the very optical index ne of the first uniaxial optical layer1, therefore bulge-structure 2122 incidence surface formed by light it is close to
The thin grating interface of light generates diffraction phenomenon in grating interface polarised light, and (referring to Fig. 3) forms positive visual angle light type energy distribution
The optical phenomena at big visual angle.Specifically, bulge-structure is in periodic arrangement, i.e., by the diffraction portion of bulge-structure building in periodically
Arrangement.
In one embodiment, referring to fig. 4, bulge-structure 2122 is tetragonous rod structure, and tetragonous rod structure has multiple sides
Face, and the one side fitting plate-like portion 2121 of tetragonous rod structure extends, the extending direction of multiple bulge-structures 2122 is parallel, adjacent
Two bulge-structures 2122 be spaced setting.Specifically, please also refer to Fig. 5, the width for being bonded the side of plate-like portion 2121 is
2rx1, the distance between the center of side of adjacent two bulge-structures 2122 fitting plate-like portion 2121 is Px1, Px1≥
2rx1, work as Px1=2rx1When, two adjacent bulge-structures are bonded setting.Bulge-structure 2122 with a thickness of d1, the second monochromatic light
Axis optical layer 212 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. 6, bulge-structure 2122 is tetragonous wimble structure, and multiple bulge-structures 2122 are in two
Matrix array arrangement is tieed up, two adjacent bulge-structures 2122 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. 7, in the x direction, fitting plate-like portion 2121
The width of side is 2rx2, the distance between the center of side of adjacent two bulge-structures 2122 fitting plate-like portion 2121 is
Px2, Px2≥2rx2, work as Px2=2rx2When, two adjacent bulge-structures are bonded setting in the x direction.In y-direction, it is bonded
The width of the side of plate-like portion 2121 is Ly2, the center of the side of adjacent two bulge-structures 2122 fitting plate-like portion 2121
The distance between be Py2, Py2≥2ry2, work as Py2=2ry2When, two adjacent bulge-structures are bonded setting in y-direction.It is convex
Rise structure 2122 with a thickness of d2, the second uniaxial optical layer 212 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 it is 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。
In embodiments of the present invention, the first grating layer 213 is layered in the second uniaxial optical layer 212 far from the first uniaxial
On the side of optical layer 211；Or it is embedded on side of the second uniaxial optical layer 212 far from the first uniaxial optical layer 211.
Natural light can be become polarised light by the first grating layer 213.Wherein, the thickness of the first grating layer 213 is generally less than 20 μm.
Specifically, when the first grating layer 213 is layered in the second uniaxial optical layer 212 far from the first uniaxial optical layer
When on 211 side, referring to Fig. 8, the first grating layer includes transparent substrate 2131 and is formed in multiple on transparent substrate 2131
The metal layer 2132 of bar shaped, multiple metal layers 2132 are spaced and are arranged in parallel.Transparent substrate 2131 includes but is not limited to glass base
Plate, silica gel substrate, silicon dioxide substrate, silicon nitride board, polymethyl methacrylate base plate and polyethylene terephthalate
One of substrate.Metal layer 2132 includes but is not limited to gold, aluminium and copper.Metal layer 2132 is formed on transparent substrate 2131,
Multiple metal layers 2132 are spaced along a straight line and uniformly arrange, and the extending direction of multiple metal layers 2132 is parallel to each other, and shape
At grating.Further, the width of metal layer 2132 is 50nm-150nm；Metal layer 2132 with a thickness of 100nm-200nm；Phase
The spacing of two adjacent metal layers 2132 is 100nm-200nm.
Specifically, when the first grating layer 213 is embedded in the second uniaxial optical layer 212 far from the first uniaxial optical layer
When on 211 side, the first grating layer includes the metal for the multiple bar shapeds being formed on 212 side of the second uniaxial optical layer
Layer, multiple metal interlevels every and be arranged in parallel.Metal layer includes but is not limited to gold, aluminium and copper.Metal layer is formed in the second monochromatic light
On 212 side of axis optical layer, multiple metal layers are spaced along a straight line and uniformly arrange, and the extending direction of multiple metal layers is mutual
In parallel, grating is formed.Further, the width of metal layer is 50nm-150nm；Metal layer 2132 with a thickness of 100nm-
200nm；The spacing of two adjacent metal layers 2132 is 100nm-200nm.
In embodiments of the present invention, the first grating layer 213 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 213 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 213 has the effect absorbed with penetrating for polarised light.
When the arragement direction of the metal layer of the first grating layer 213 is parallel to the direction 0/180degree, the first grating layer
The extending direction of 213 metal layer is parallel to the direction 90/270degree.Predicted level polarised light can pass through the first grating layer
213, the equivalent refractive index which passes through the first uniaxial optical layer 211 is ne1, the horizontal polarization light pass through second
The equivalent refractive index of uniaxial optical layer 212 is no2, due to ne1> no2, the first uniaxial optical layer 211 and the second uniaxial
The interface of optical layer 212 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 first grating layer 213 is parallel to the direction 90/270degree, the first grating layer
The extending direction of 213 metal layer is parallel to the direction 0/180degree.It is expected that orthogonal polarized light can pass through the first grating layer
213, the equivalent refractive index which passes through the first uniaxial optical layer 211 is ne1, the orthogonal polarized light pass through second
The equivalent refractive index of uniaxial optical layer 212 is no2, due to ne1> no2, the first uniaxial optical layer 211 and the second uniaxial
The interface of optical layer 212 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.
Optical film layer provided in this embodiment, including the first uniaxial optical layer 211, the second uniaxial optical layer 212 and
The very optical index of first grating layer 213, the first uniaxial optical layer 211 is greater than the ordinary of the second uniaxial optical layer 212
Optical index, light will generate diffraction when passing through from the interface of groove and bulge-structure, so that positive visual angle light type energy point
With big visual angle, improve visual angle colour cast；First grating layer 213 is layered in the second uniaxial optical layer 212 far from the first uniaxial light
On the side for learning layer 211, or it is embedded on side of the second uniaxial optical layer 212 far from the first uniaxial optical layer 211, energy
Natural light is enough set to become polarised light, and the polarizer that alternate thicknesses are thicker.Above-mentioned optical film layer can be by positive visual angle light type as a result,
Energy distributes big visual angle, improves visual angle colour cast, but also natural light can be become polarised light, to replace polarizer.
It is the structural schematic diagram of the display device in the present embodiment referring to Fig. 9, Fig. 9.
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 Figure 10, the backlight light type output that backlight module 100 has directive property high, including
Reflector plate 110, light guide plate 120, prism film 130 and LED light source 140, reflector plate 110 and light guide plate 120, prism film 130 are successively
Stacking, light guide plate 120 have 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 Figure 11 and Figure 12, Figure 11 and Figure 12 are the knot of the display panel in the present embodiment
Structure schematic diagram.
In the present embodiment, display panel 200 includes optical film layer 210, first substrate 220, display layer 230, the second grating
Layer 240, photoresist layer 250 and the second substrate 260.
Specifically, first substrate 220 is arranged on side of the optical film layer 210 far from the first uniaxial optical layer 211；The
Two substrates 260 are oppositely arranged with first substrate 220；Display layer 230 is arranged between first substrate 220 and the second substrate 260；
Second grating layer 240 is arranged between display layer 230 and the second substrate 260；Photoresist layer 250 is arranged in 240 He of the second grating layer
Between the second substrate 260, or it is arranged between first substrate 220 and display layer 230.
That is, in one embodiment, referring to Figure 11, display panel 200 includes the successively optical film layer 210 of lamination setting, the
One substrate 220, display layer 230, the second grating layer 240, photoresist layer 250 and the second substrate 260；In another embodiment,
Referring to Figure 12, display panel 200 includes the optical film layer 210, first substrate 220 of successively lamination setting, photoresist layer 250, display
The 230, second grating layer 240 of layer and the second substrate 260.
In the embodiment of the present invention, optical film layer 210 is referring to the associated description of a upper embodiment, and details are not described herein.Optics
Film layer 210 can distribute positive visual angle light type energy to big visual angle, improve visual angle colour cast, but also can become to polarize by natural light
Light, to replace polarizer, the thickness of thinning display panel.
In the embodiment of the present invention, first substrate 220 is arranged in optical film layer 210 far from the first uniaxial optical layer 211 1
On side, the second substrate 260 is oppositely arranged with first substrate 220, the material of first substrate 220 and the second substrate 260 with no restrictions,
Glass substrate can specifically be selected.Display layer 230 includes liquid crystal material layer and the electricity being arranged in liquid crystal material layer upper and lower surface
Pole layer, 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 213 of the second grating layer 240 and optical film layer 210 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 213.The structure and function phase of second grating layer 240 and the first grating layer 213
Seemingly, has the effect absorbed with penetrating for polarised light.
In the embodiment of the present invention, photoresist layer 250 is used to provide form and aspect for display panel, and display panel is made to form colored show
Show picture.Photoresist layer 250 can be set between the second grating layer 240 and the second substrate 260, or also can be set first
Between substrate 220 and display layer 230.
Please also refer to Figure 13-Figure 15 (clathrum is compensation film layer in figure), in one embodiment, when photoresist layer 250
When being arranged between the second grating layer 240 and the second substrate 260, 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 16-Figure 18 (clathrum is compensation film layer in figure), in one embodiment, when photoresist layer 250
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 250 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 210, 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) are avoided
Element drives sub-pixel and light-permeable open region sacrifice, to have the high saturating rate of panel, increases out light energy, can be with
Reach energy-efficient benefit, while maintaining the display resolution and driving frequency of display panel 200；On the other hand, the first grating
Layer 213 and the second grating layer 240 can make natural light become polarised light, and the polarizer that alternate thicknesses are thicker, and make to show
The thinner thickness of panel 200, so that 10 volume of display device is frivolous, display colour cast rate is low and has high display efficiency, it can
Improve the Experience Degree of 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
First uniaxial optical layer is formed with multiple grooves on the side of the first uniaxial optical layer；
Second 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 second uniaxial optical layer is less than the first uniaxial optics
The extraordinary ray refractive index of layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is in incident light
Wave-length coverage in；
First grating layer is layered on side of the second uniaxial optical layer far from the first uniaxial optical layer；Or
It is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer.
2. optical film layer according to claim 1, which is characterized in that the extraordinary ray of the first uniaxial optical layer is rolled over
Penetrating rate is 1.0-2.5；And/or the ordinary refraction index of the second uniaxial optical layer is 1.0-2.5.
3. optical film layer according to claim 1, which is characterized in that the extraordinary ray of the first uniaxial optical layer is rolled over
The difference for penetrating the ordinary refraction index of rate and the second 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 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 first uniaxial optical layer
Material includes nematic liquid crystal molecular material；And/or the material of the second uniaxial optical layer includes nematic liquid crystal molecule material
Material.
8. optical film layer according to claim 1-4, which is characterized in that first grating layer is layered in described
On side of the second uniaxial optical layer far from the first uniaxial optical layer, first grating layer include transparent substrate and
Be formed in the metal layer of multiple bar shapeds on the transparent substrate, multiple metal interlevels every and be arranged in parallel；Or
First grating layer is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer,
First grating layer includes the metal layer for the multiple bar shapeds being formed on the second uniaxial optical layer side, multiple described
Metal interlevel every and be arranged in parallel.
9. optical compound film layer according to claim 8, which is characterized in that the width of the metal layer is 50nm-
150nm, each metal layer with a thickness of 100nm-200nm, the spacing of two adjacent metal layers is 100nm-
200nm。
10. a kind of optical film layer characterized by comprising
First uniaxial optical layer is formed with multiple grooves on the side of the first uniaxial optical layer；
Second 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 second uniaxial optical layer is less than the first uniaxial optics
The extraordinary ray refractive index of layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is less than or waits
In 1000nm；
First grating layer is layered on side of the second uniaxial optical layer far from the first uniaxial optical layer；Or
It is embedded on side of the second uniaxial optical layer far from the first uniaxial optical layer；
Wherein, the extraordinary ray refractive index of the first uniaxial optical layer is 1.0-2.5, the second uniaxial optical layer
Ordinary refraction index is 1.0-2.5, the extraordinary ray refractive index of the first uniaxial optical layer and the second uniaxial light
The difference for learning the ordinary refraction index of layer is 0.01-2.
11. 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:
Such as the described in any item optical film layers of claim 1-10；
First substrate on side of the optical film layer far from the first uniaxial optical layer is set；
The second substrate being oppositely arranged with the first substrate；
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；
Photoresist layer between second grating layer and the second substrate is set, or is arranged in the first substrate and institute
State the photoresist layer between display layer.
12. display device according to claim 11, which is characterized in that the photoresist layer is arranged in second grating layer
Between 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. display device according to claim 11, which is characterized in that photoresist layer setting in the first substrate and
Between 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 |
|---|---|---|---|
| CN201910090537.4A CN109613745A (en) | 2019-01-30 | 2019-01-30 | Optical film layer display device |
| PCT/CN2019/076109 WO2020155246A1 (en) | 2019-01-30 | 2019-02-26 | Optical film layer and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090537.4A CN109613745A (en) | 2019-01-30 | 2019-01-30 | Optical film layer display device |
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| Publication Number | Publication Date |
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| CN109613745A true CN109613745A (en) | 2019-04-12 |
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ID=66021499
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910090537.4A Pending CN109613745A (en) | 2019-01-30 | 2019-01-30 | Optical film layer display device |
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| Country | Link |
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| CN (1) | CN109613745A (en) |
| WO (1) | WO2020155246A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110216255A1 (en) * | 2010-03-05 | 2011-09-08 | Hitachi Maxell, Ltd. | Polarization diffraction grating, method for manufacturing the same, and optical pickup apparatus using the polarization diffraction grating |
| CN108227276A (en) * | 2017-12-29 | 2018-06-29 | 明基材料有限公司 | Optical film |
| CN109164531A (en) * | 2018-09-30 | 2019-01-08 | 惠科股份有限公司 | Structure of polarized light and display device |
| CN109239968A (en) * | 2018-10-30 | 2019-01-18 | 惠科股份有限公司 | Optical compound film layer, display panel and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283747A (en) * | 2018-10-30 | 2019-01-29 | 惠科股份有限公司 | Optical compound film, display panel and display device |
-
2019
- 2019-01-30 CN CN201910090537.4A patent/CN109613745A/en active Pending
- 2019-02-26 WO PCT/CN2019/076109 patent/WO2020155246A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110216255A1 (en) * | 2010-03-05 | 2011-09-08 | Hitachi Maxell, Ltd. | Polarization diffraction grating, method for manufacturing the same, and optical pickup apparatus using the polarization diffraction grating |
| CN108227276A (en) * | 2017-12-29 | 2018-06-29 | 明基材料有限公司 | Optical film |
| CN109164531A (en) * | 2018-09-30 | 2019-01-08 | 惠科股份有限公司 | Structure of polarized light and display device |
| CN109239968A (en) * | 2018-10-30 | 2019-01-18 | 惠科股份有限公司 | Optical compound film layer, display panel and display device |
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| Publication number | Publication date |
|---|---|
| WO2020155246A1 (en) | 2020-08-06 |
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Application publication date: 20190412 |