CN106773266B - A kind of reflective liquid-crystal display based on surface plasmons technology - Google Patents
A kind of reflective liquid-crystal display based on surface plasmons technology Download PDFInfo
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- CN106773266B CN106773266B CN201710081820.1A CN201710081820A CN106773266B CN 106773266 B CN106773266 B CN 106773266B CN 201710081820 A CN201710081820 A CN 201710081820A CN 106773266 B CN106773266 B CN 106773266B
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- surface plasmons
- crystal display
- reflective liquid
- display based
- metal
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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
- G02F1/133504—Diffusing, scattering, diffracting 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
- G02F1/133553—Reflecting elements
Abstract
The present invention relates to technical field of liquid crystal display, in particular to a kind of reflective liquid-crystal display based on surface plasmons technology.Including substrate, the substrate is equipped with metallic reflector, the metallic reflector is equipped with metal grating structure, the metal grating structure is equipped with metallic reflective electrodes, between adjacent two metallic reflector and metal grating structure and it is located at the lower section of metallic reflective electrodes equipped with conductive electrode gap, the metallic reflector and metal grating structure together constitute surface plasmons absorbing structure, the wavelength that the surface plasmons absorbing structure absorbs can be entire visible-range, increase metal grating absorbing structure among metal electrode and reflecting layer, the structure can fully absorb incident light, avoid interference of the reflected light around pixel to display pixel, realize the display of high-resolution and high-contrast image.
Description
Technical field
It is the present invention relates to technical field of liquid crystal display, in particular to a kind of based on the reflective of surface plasmons technology
Liquid crystal display.
Background technique
Electronical display product has become a part important in our lives, and the requirement with people to electronic product is got over
Carry out higher and electronic product in life using more and more extensively, this requires that display technology needs to be continuously improved and innovate.Reflection
Formula liquid crystal display operation principle is to reflect the light of outer light source, realizes the display of image, has and does not need backlight, function
Consume low advantage.Why display can show image, mainly be shown by the minimum display unit pixel of display by control
And realize the display of image, incident light not only can all enter from pixel incidence, entire panel.In order to show fine definition
Image, it is necessary to constantly reduce pixel size and pixel between spacing, this can bring about some problems, the display of pixel
It just will receive the influence of peripheral reflection light.
Surface plasmons is on medium/metal interface, and electromagnetic wave and metal interaction, part electronics are deprived of
The ionized gas for the positron-electron composition that part of atoms generates after being ionized on atom adding afterwards resonates once in a while with electric field generation,
Make longitudinal charge density of metal that the oscillation of collective type eelctric dipole occur, a kind of of generation draws since the density of electron concentration is uneven
This surface wave of density wave propagated along metal surface risen is just referred to as surface plasmons (Surface Plasmon
Polaritons,SPPs).Nowadays surface plasmons technology is widely used for bio-sensing, light storage, solar battery
In equal opto-electronic devices.
Summary of the invention
In order to solve to show image high-definition, need constantly to reduce the spacing between the size and pixel of pixel, from
And the display of bring pixel the problem of just will receive the influence of peripheral reflection light, the present invention provides a kind of based on surface plasma
The reflective liquid-crystal display of excimer technology increases metal grating absorbing structure, the structure among metal electrode and reflecting layer
Incident light can be fully absorbed, avoid interference of the reflected light around pixel to display pixel, realize high-resolution and high comparison
Spend the display of image.
The present invention is achieved through the following technical solutions.
A kind of reflective liquid-crystal display based on surface plasmons technology, including substrate, the substrate are equipped with
Metallic reflector, the metallic reflector are equipped with metal grating structure, and the metal grating structure is equipped with metallic reflection electricity
Pole on the metallic reflector and metal grating structure and is located at the lower sections of metallic reflective electrodes and is equipped with conductive electrode gap, institute
The top for stating metallic reflective electrodes is equipped with display pannel.
Preferably, the metallic reflector and metal grating structure, which together constitute surface plasmons, absorbs knot
Structure, the surface plasmons absorbing structure, the wave-length coverage that the surface plasmons absorbing structure absorbs is visible
The wavelength of light, infrared light or ultraviolet light and some particular color.
Preferably, the substrate is silicon chip.
Preferably, the metal grating structure is made of metal and medium, the damascene is in the medium, described
The inlaid shapes of medium are in the striated intersected anyhow, and the medium is the stable compound of chemical characteristic.
Preferably, the refractive index of the medium is greater than 2, medium character is stablized, and refractive index is larger, loss is smaller.
Preferably, the shape of the display pannel is circle, quadrangle, polygon or other polymorphic structures.
Preferably, the basic unit pixel of the display pannel, shape can be circle, and quadrangle is polygon
Shape or other polymorphic structures.
Beneficial effects of the present invention: increase metal grating absorbing structure among metal electrode and reflecting layer, which can
To fully absorb to incident light, interference of the reflected light around pixel to display pixel is avoided, and then realizes that high-resolution and height are right
Than the display of degree image.
Detailed description of the invention
Fig. 1 is main view of the present invention.
Fig. 2 is top view of the present invention.
Fig. 3 is the main view of metal grating of the present invention.
Fig. 4 is metal grating top view of the present invention.
Fig. 5 is absorbing wavelength figure of the present invention to visible light.
Wherein: 1, substrate；2, metallic reflector；3, metal grating structure；4, metallic reflective electrodes；5, conductive electrode stitches
Gap；6, incident light；7, reflected light；8, medium；9, metal；10, display panel.
Specific embodiment
Below in conjunction with the embodiment of the present invention and Figure of description, technical solution in the embodiment of the present invention carries out clear
Chu is fully described by, it is clear that and described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments,
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
With reference to Fig. 1, a kind of reflective liquid-crystal display based on surface plasmons technology, including substrate 1, the base
Bottom 1 is equipped with metallic reflector 2, and the metallic reflector 2 is equipped with metal grating structure 3, and the metal grating structure 3 can be with
Entire visible-range is absorbed, the metal grating structure 3 is equipped with metallic reflective electrodes 4, the metallic reflector 2 and metal
On optical grating construction 3 and it is located at the lower section of metallic reflective electrodes 4 equipped with conductive electrode gap 5, the top of the metallic reflective electrodes 4
Equipped with display pannel 10.Reflected light 7 is had when incident light shines 4 surface of metallic reflective electrodes to reflect, and works as incident light
It can be absorbed by metal grating structure 3 when shining 3 surface of metal grating structure.
It is a kind of reflective liquid-crystal display based on surface plasmons technology involved in this patent with reference to Fig. 2
Top view, metal grating structure 3 covers entire display screen, only can there are conductive electrode gaps below metallic reflective electrodes 4
5。
The metallic reflector 2 and metal grating structure together constitute surface plasmons absorbing structure, the table
The wave-length coverage that face plasmon absorbing structure absorbs is the wave of visible light, infrared light, ultraviolet light or some particular color
It is long.
The substrate 1 is silicon chip.
With reference to Fig. 3, the metal grating structure 3 is made of metal 9 and medium 8, and the metal 9 is embedded in medium 8, institute
The inlaid shapes for giving an account of matter 8 are in the striated intersected anyhow, and the medium is the stable compound Si3N4 of chemical characteristic.
The shape of the display pannel 10 is circle, quadrangle, polygon or other polymorphic structures.
The shape and metallic reflective electrodes 4 of the basic unit pixel of the display pannel 10 are identical, the base pixel
Cell configuration can be circle, quadrangle, polygon or other polymorphic structures.
Medium in metal and medium mosaic coating has some special natures, including property is stable, refractive index is big, loss compared with
Small etc., as the preferred embodiment of the invention, the refractive index of the medium 8 is greater than 2.
The light absorbing wavelength of the surface plasmons formed in metal grating is reflected by metallic substrates thickness h, dielectric
Metal accounting (value 0-1), metal grating gap width w, i.e. dielectric width in rate n, metallic substrates grating height d, grating
The refractive index of and effective refractive index -- metal-dielectric-metal (MIM) structured waveguide codetermines.
Calculation formula:
Calculation formula:
Wherein: λpark: resonance wave crest -- it is radiated at the wavelength of the maximum intensity light reflected on optical grating construction:
n0: St1N4Refractive index (takes 2.0):
D: grating height:
M:FP chamber resonance level
F: fill factor, i.e., metal accounting (value 0-1) in grating:
W: aluminium grating gap width, i.e. Sl3N4Width；
ncff: the refractive index of effective refractive index -- metal-dielectric-metal (MIM) structured waveguide:
Solve system of equationWherein εt,wFor medium (metal) dielectric constant,
ω angular speed, the c light velocity, kt,wLight is in medium (metal) wave vector:
Thus formula can set the design parameter of metal grating according to light absorbing wavelength, realize to the complete of visible light
Portion absorbs.Shown in Figure 5, by adjusting grating parameter, which all absorbs visible-range.
Above to a kind of reflective liquid-crystal display progress based on surface plasmons technology provided by the present invention
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of reflective liquid-crystal display based on surface plasmons technology, it is characterised in that: including substrate (1), institute
Substrate (1) is stated equipped with metallic reflector (2), the metallic reflector (2) is equipped with metal grating structure (3), the metal
Optical grating construction (3) is equipped with metallic reflective electrodes (4), on the metallic reflector (2) and metal grating structure (3) and is located at gold
The lower section for belonging to reflecting electrode (4) is equipped with conductive electrode gap (5), and the top of the metallic reflective electrodes (4) is equipped with display surface
Plate (10).
2. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 1, feature
Be: the metallic reflector (2) and metal grating structure together constitute surface plasmons absorbing structure, the surface
The wave-length coverage that plasmon absorbing structure absorbs is visible light, infrared light, ultraviolet light.
3. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 1, feature
Be: the substrate (1) is silicon chip.
4. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 1, feature
Be: the metal grating structure (3) is made of metal (9) and medium (8), and the metal (9) is embedded in medium (8), institute
The inlaid shapes for giving an account of matter (8) are in the striated intersected anyhow, and the medium is the stable compound of chemical characteristic.
5. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 4, feature
Be: the stable compound of the chemical characteristic is Si3N4.
6. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 4, feature
Be: the refractive index of the medium (8) is greater than 2.
7. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 1, feature
Be: the shape of the display pannel (10) is round, polygon or other polymorphic structures.
8. a kind of reflective liquid-crystal display based on surface plasmons technology according to claim 7, feature
Be: the shape of the display pannel (10) is quadrangle.
9. a kind of reflective liquid-crystal display based on surface plasmons technology, feature exist according to claim 1
In: the shape and metallic reflective electrodes (4) of the basic unit pixel of the display pannel (10) are identical, the basic unit picture
Plain shape is round, polygon or other polymorphic structures.
10. a kind of reflective liquid-crystal display based on surface plasmons technology, feature exist according to claim 9
In: the basic unit primitive shape is quadrangle.
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| CN201710081820.1A CN106773266B (en) | 2017-02-15 | 2017-02-15 | A kind of reflective liquid-crystal display based on surface plasmons technology |
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| CN106773266B true CN106773266B (en) | 2019-09-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107861287B (en) | 2017-12-13 | 2020-06-26 | 京东方科技集团股份有限公司 | Display panel, display device and preparation method of display panel |
| CN109557698B (en) * | 2019-01-31 | 2022-12-02 | 京东方科技集团股份有限公司 | Light filtering structure, pixel structure, display panel, driving method of display panel and display device |
| CN111580197B (en) * | 2020-05-17 | 2022-05-17 | 桂林电子科技大学 | Transverse MIMI lattice plasmon resonance absorber |
| CN114967219B (en) * | 2022-06-30 | 2023-12-26 | 火鸟科技有限公司 | Beam steering device based on super-surface structure |
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| TW200905283A (en) * | 2007-07-31 | 2009-02-01 | Din-Ping Tsai | A plasmonic reflection filter |
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| TW200905283A (en) * | 2007-07-31 | 2009-02-01 | Din-Ping Tsai | A plasmonic reflection filter |
| JP2010156871A (en) * | 2008-12-27 | 2010-07-15 | Ricoh Co Ltd | Polarization control element, and image display device using the same |
| CN102893199A (en) * | 2010-05-14 | 2013-01-23 | 日本电气株式会社 | Display element, display, and projection display device |
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