CN108181678A - Metal polaroid and the display device for including the metal polaroid - Google Patents
Metal polaroid and the display device for including the metal polaroid Download PDFInfo
- Publication number
- CN108181678A CN108181678A CN201711488903.9A CN201711488903A CN108181678A CN 108181678 A CN108181678 A CN 108181678A CN 201711488903 A CN201711488903 A CN 201711488903A CN 108181678 A CN108181678 A CN 108181678A
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- Prior art keywords
- metal
- polaroid
- encapsulated layer
- transparent encapsulated
- transparent
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
-
- 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
- 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
- G02F1/133548—Wire-grid polarisers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
Abstract
The present invention provides a kind of metal polaroid and includes the display device of the metal polaroid.The metal polaroid includes：Substrate；Wire grating is formed on substrate and including multiple metalworks separated from one another；Transparent encapsulated layer, encapsulated metal wiregrating, wherein, the refractive index of transparent encapsulated layer is in the range of 1.0 to 1.2.
Description
Technical field
The present invention relates to display fields, more particularly, are related to a kind of metal polaroid and including the metal polaroid
Display device.
Background technology
At present, in a display device, traditional iodine polarizing piece is replaced using sub-wavelength metal film polarizers, to change
Significantly improve the reliability of display while kind penetrance.
However, since the metalwork in metal polaroid is made of more active metallic aluminium, such polaroid is using
It is directly exposed to air environment or other moistures and/or oxygen environment in the process, it may occur that chemical reaction generates corrosion, so as to
Influence polarization effect.
Invention content
To solve problem above in the prior art, the present invention provides a kind of metal polaroids.The metal metaphosphate
Mating plate includes：Substrate；Wire grating is formed on substrate and including multiple metalworks separated from one another；Transparent encapsulated layer,
Encapsulated metal wiregrating, wherein, the refractive index of transparent encapsulated layer is in the range of 1.0 to 1.2.
In embodiment, the gap between the multiple metalwork is less than the wavelength of incident light.
In embodiment, the multiple metalwork is in the strip of constant distance separated from one another.
In embodiment, the multiple metalwork is made of aluminum.
In embodiment, the distance of the upper surface of the upper surface pitch metal lines grid of transparent encapsulated layer in about 50nm to about
In the range of 200nm.
In embodiment, transparent encapsulated layer fills the gap between the multiple metalwork.
In embodiment, transparent encapsulated layer is provided only on being located in the upper surface and the multiple metalwork of wire grating
On the outer surface of outermost metalwork.
In embodiment, transparent encapsulated layer includes epoxies organic material or acrylic compounds organic matter.
The exemplary embodiment of the present invention provides a kind of display device, the display device includes：Back light unit generates
Light；Liquid crystal display panel, on back light unit；Metal polaroid, is arranged between back light unit and liquid crystal display panel, institute
Metal polaroid is stated to include：Substrate；Wire grating is formed on substrate and including multiple metalworks separated from one another；Thoroughly
Bright encapsulated layer, encapsulated metal wiregrating, wherein, the refractive index of transparent encapsulated layer is in the range of 1.0 to 1.2.
Description of the drawings
Fig. 1 is the perspective view for the metal polaroid for showing exemplary embodiment according to the present invention.
Fig. 2 shows the sectional views of metal polaroid according to an exemplary embodiment of the present invention.
Fig. 3 is the curve graph for the polarization effect for showing metal polaroid.
Specific embodiment
The embodiment of the present invention is reference will now be made in detail, the example of the embodiment is shown in the drawings, wherein, identical mark
Number identical component is indicated always.It will illustrate the embodiment by referring to accompanying drawing below, to explain the present invention.
Fig. 1 is the perspective view for the metal polaroid for showing exemplary embodiment according to the present invention.Fig. 2 shows according to this hair
The sectional view of the metal polaroid of bright exemplary embodiment.Metal polaroid is described below with reference to Fig. 1 and Fig. 2.
Referring to Figures 1 and 2, metal polaroid 100 includes substrate 10, wire grating 20 and transparent encapsulated layer 30.Metal metaphosphate
Mating plate 100 can be sub-wavelength metal film polarizers.
Exemplary embodiment according to the present invention, substrate 10 is transparent substrate, for example, glass substrate.It is according to the present invention
Another exemplary embodiment, substrate 10 can be flexible base board.
Exemplary embodiment according to the present invention, wire grating 20 are set on the substrate 10, and including separated from one another
Multiple metalworks 21.Multiple metalworks 21 can be parallel to each other.Multiple metalworks 21 can be into the item for separating constant distance S
Shape.Gap between multiple metalworks 21 can be less than the wavelength of incident light.Each metalwork in multiple metalworks 21 can be with
Upper surface basically perpendicular to substrate 10.The height H of metalwork 21 can be about 100nm.Metalwork 21 can be aluminium.Metal
The cycle T of wiregrating 20 is equal to the sum of thickness L and constant distance S of metalwork 21.The cycle T of wire grating 20 can be 100nm.
The duty ratio (that is, ratio of the cycle T of the thickness L and metal grating of metalwork 21) of metal polaroid can be 0.5, but unlimited
In this.Wire grating 20 can be by electron beam exposure, chlorine-based gas (BCl) reactive ion etching and dry method is removed photoresist or nanometer
The techniques such as coining are made.In an exemplary embodiment of the present invention, wire grating 20 can be sub-wavelength metal film polarizers.
Transparent encapsulated layer 30 can be with encapsulated metal wiregrating 20, each most appearance of 30 encapsulated metal wiregrating 20 of transparent encapsulated layer
Face.The distance of the upper surface of the upper surface pitch metal lines grid 20 of transparent encapsulated layer 30 can be in about 50nm to about 200nm's
In the range of.In an exemplary embodiment of the present invention, as shown in (a) of Fig. 2, transparent encapsulated layer 30 can fill multiple gold
Belong to the gap between part 21.The thickness of transparent encapsulated layer 30 can be in the range of about 150nm to about 300nm.For example, thoroughly
The thickness of bright encapsulated layer 30 can be about 150nm.
In another exemplary embodiment of the invention, as shown in (b) of Fig. 2, transparent encapsulated layer 30 can be not filled with
Gap between multiple metalworks 21.That is, transparent encapsulated layer 30 is provided only on the upper surface of wire grating 20 and multiple metalworks
On the outer surface of metalwork on the outermost side 21 in 21.The part for being located at 20 top of wire grating of transparent encapsulated layer 30
Thickness (distance of the upper surface of the upper surface pitch metal lines grid 20 of transparent encapsulated layer 30) can be in about 50nm to about
In the range of 200nm.For example, the thickness of the part being located above wire grating of transparent encapsulated layer 30 can be about 50nm.
Transparent encapsulated layer 30 can include such as transparent material of epoxies organic material or acrylic compounds organic matter, with saturating
Cross light protects wire grating 20 from the influence of the moisture in ambient enviroment and/oxygen simultaneously.In another embodiment of the invention,
Substrate 10 can also include it is transparent and isolation ambient enviroment in moisture and/or oxygen material, with transparent encapsulated layer 30 1
Complete encapsulated metal wiregrating 20 is played, protects it from the influence of the moisture and/oxygen in ambient enviroment.Transparent encapsulated layer 30 can pass through
Such as painting method of spraying or spin coating method is made.
Compared with prior art, metal polaroid according to an embodiment of the invention is transparent by being coated on wire grating
Encapsulated layer protects the wire grating from the moisture in ambient enviroment and the/influence of oxygen, to improve the reliability of display device.
In an embodiment of the present invention, polarisation can be improved by selecting the transparent encapsulated layer with appropriate refractive index
Effect.The influence of the transparent encapsulated layer of different refractivity to the polarization effect of metal polaroid is shown below with reference to Fig. 3.
Fig. 3 is the curve graph for the polarization effect for showing metal polaroid.Fig. 3, which is shown, utilizes Fdtd Method (FDTD)
Influence of the transparent encapsulated layer of the different refractivity of method simulation to the polarization effect of metal polaroid, wherein, Finite Difference-Time Domain
Point (FDTD) method with drag based on being simulated：The material of the metalwork of metal grating be aluminium, the height of metal grating
For 100nm, period 100nm, duty ratio 0.5, the distance of the upper surface of the upper surface pitch metal lines grid of transparent encapsulated layer is
50nm, light source are plane wave (380nm to 780nm), and light source is from positive incident metal polaroid.
With reference to Fig. 3, it is the polarization effect of the metal polaroid without transparent encapsulated layer that curve 3 is corresponding.Curve 1-2 and
4-5 corresponds to the polarization effect of the metal polaroid of the transparent encapsulated layer with different refractivity respectively.Corresponding curve 1 is transparent
The refractive index of encapsulated layer is 1.1, and it be the refractive index of transparent encapsulated layer is 1.2 that curve 2 is corresponding, and corresponding curve 4 is transparent envelope
The refractive index of layer is filled as 1.4, it be the refractive index of transparent encapsulated layer is 1.8 that curve 5 is corresponding.
In 380nm to 780nm wave bands, the extinction ratio of above-mentioned each metal polaroid is in 380nm to the wavelength of about 720nm
In the range of increase with the increase of the wavelength of light source, reach maximum in about 720nm.The extinction ratio of curve 1 is at about 720nm
The maximum value reached is more than 8000:1.The maximum value that the extinction ratio of curve 2 reaches at about 720nm is more than 7500:1, and
The extinction ratio of curve 2 is respectively less than the extinction ratio of curve 1 at each wavelength of all band (380nm to 780nm).Curve 3 disappears
Light is less than 7000 than the maximum value reached at about 720nm:1 and more than 6000:1, and the extinction ratio of curve 3 is in all band
Each wavelength at be respectively less than the extinction ratio of curve 2.The maximum value that the extinction ratio of curve 4 reaches at about 720nm is about
5000:1, and the extinction ratio of curve 4 is respectively less than the extinction ratio of curve 3 at full wave each wavelength.The extinction ratio of curve 5
The maximum value reached at about 720nm is less than 3000:1, and the extinction ratio of curve 5 is small at full wave each wavelength
In the extinction ratio of curve 4.Therefore, at full wave each wavelength, the extinction ratio of curve 1-5 is sequentially reduced.Curve 1 and 2
Extinction ratio is in all band on the extinction ratio of curve 3, and the extinction ratio of curve 4 and 5 is in the extinction ratio of curve 3 in all band
Under.
With reference to Fig. 3, when setting transparent encapsulated layer, the smaller material of selective refraction rate can improve disappearing for metal polaroid
Light ratio, so as to improve polarization effect.Preferably, the refractive index of transparent encapsulated layer is between 1.0 to 1.2, for example, transparent encapsulated layer
Refractive index be 1.1.Transparent encapsulated layer can include epoxies organic material or acrylic compounds organic matter etc..
Exemplary embodiment according to the present invention, display device can include the back light unit of generation light, positioned at backlight list
Liquid crystal display panel in member and the metal polaroid being arranged between back light unit and liquid crystal display panel.The metal metaphosphate
Mating plate includes substrate, on substrate and includes the wire gratings of multiple metalworks separated from one another；Encapsulated metal wiregrating
Transparent encapsulated layer, wherein, the refractive index of transparent encapsulated layer is in the range of 1.0 to 1.2.
Compared with prior art, metal polaroid according to an embodiment of the invention is transparent by being coated on wire grating
Encapsulated layer protects the wire grating from the moisture in ambient enviroment and the/influence of oxygen, to improve the reliability of display device.Root
It can be improved partially by selecting the transparent encapsulated layer with appropriate refractive index according to the metal polaroid of the embodiment of the present invention
Light effect.
Display device including metal polaroid according to an embodiment of the invention can improve the reliable of display device
Property while, improve polarization effect.
Although having shown that and describing some exemplary embodiments of the present invention, it will be understood by those skilled in the art that
It, can be to these in the case where not departing from the principle and spirit of the invention defined by the claims and their equivalents
Embodiment is modified.
Claims (9)
1. a kind of metal polaroid, which is characterized in that the metal polaroid includes：
Substrate；
Wire grating is formed on substrate and including multiple metalworks separated from one another；
Transparent encapsulated layer, encapsulated metal wiregrating,
Wherein, the refractive index of transparent encapsulated layer is in the range of 1.0 to 1.2.
2. metal polaroid according to claim 1, wherein, the gap between the multiple metalwork is less than incident light
Wavelength.
3. metal polaroid according to claim 2, wherein, the multiple metalwork is in constant distance separated from one another
Strip.
4. metal polaroid according to claim 1, wherein, the multiple metalwork is made of aluminum.
5. metal polaroid according to claim 1, wherein, the upper surface of the upper surface pitch metal lines grid of transparent encapsulated layer
Distance is in the range of 50nm to 200nm.
6. metal polaroid according to claim 1, wherein, between transparent encapsulated layer is filled between the multiple metalwork
Gap.
7. metal polaroid according to claim 1, wherein, transparent encapsulated layer is provided only on upper surface and the institute of wire grating
On the outer surface for stating the metalwork on the outermost side in multiple metalworks..
8. metal polaroid according to claim 1, wherein, transparent encapsulated layer includes epoxies organic material or acrylic acid
Type organic.
9. a kind of display device, which is characterized in that the display device includes：
Back light unit generates light；
Liquid crystal display panel, on back light unit；
Metal polaroid, is arranged between back light unit and liquid crystal display panel, and the metal polaroid includes：Substrate；Metal
Wiregrating is formed on substrate and including multiple metalworks separated from one another；Transparent encapsulated layer, encapsulated metal wiregrating, wherein,
The refractive index of transparent encapsulated layer is in the range of 1.0 to 1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488903.9A CN108181678A (en) | 2017-12-29 | 2017-12-29 | Metal polaroid and the display device for including the metal polaroid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488903.9A CN108181678A (en) | 2017-12-29 | 2017-12-29 | Metal polaroid and the display device for including the metal polaroid |
Publications (1)
| Publication Number | Publication Date |
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| CN108181678A true CN108181678A (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711488903.9A Pending CN108181678A (en) | 2017-12-29 | 2017-12-29 | Metal polaroid and the display device for including the metal polaroid |
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Cited By (5)
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| CN108803124A (en) * | 2018-06-27 | 2018-11-13 | 武汉华星光电技术有限公司 | Curved surface liquid crystal display and its manufacturing method |
| CN110441952A (en) * | 2019-07-25 | 2019-11-12 | Oppo（重庆）智能科技有限公司 | The production method of display device, electronic equipment and display device |
| WO2020124890A1 (en) * | 2018-12-20 | 2020-06-25 | 深圳市华星光电半导体显示技术有限公司 | Manufacturing method for wire grid type polarizer, and transparent display apparatus |
| WO2020232750A1 (en) * | 2019-05-17 | 2020-11-26 | 深圳市华星光电半导体显示技术有限公司 | Polarizer and liquid crystal display apparatus |
| WO2021143641A1 (en) * | 2020-01-17 | 2021-07-22 | 京东方科技集团股份有限公司 | Color filter substrate, display panel, and display device |
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