CN103376546B - light modulation device - Google Patents
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- CN103376546B CN103376546B CN201210521571.0A CN201210521571A CN103376546B CN 103376546 B CN103376546 B CN 103376546B CN 201210521571 A CN201210521571 A CN 201210521571A CN 103376546 B CN103376546 B CN 103376546B
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- 239000007788 liquid Substances 0.000 claims abstract description 99
- 239000000758 substrate Substances 0.000 claims abstract description 71
- 239000000975 dye Substances 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 15
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 35
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 4
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 239000004695 Polyether sulfone Substances 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920006393 polyether sulfone Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- OHABWQNEJUUFAV-UHFFFAOYSA-N dichloro-methyl-(3,3,3-trifluoropropyl)silane Chemical compound C[Si](Cl)(Cl)CCC(F)(F)F OHABWQNEJUUFAV-UHFFFAOYSA-N 0.000 description 2
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002338 polyhydroxyethylmethacrylate Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- HLWCOIUDOLYBGD-UHFFFAOYSA-N trichloro(decyl)silane Chemical compound CCCCCCCCCC[Si](Cl)(Cl)Cl HLWCOIUDOLYBGD-UHFFFAOYSA-N 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- CHBOSHOWERDCMH-UHFFFAOYSA-N 1-chloro-2,2-bis(4-chlorophenyl)ethane Chemical compound C=1C=C(Cl)C=CC=1C(CCl)C1=CC=C(Cl)C=C1 CHBOSHOWERDCMH-UHFFFAOYSA-N 0.000 description 1
- KOUONPVXNPOEHQ-UHFFFAOYSA-N 2-[dimethoxy(propyl)silyl]oxyacetamide Chemical compound CCC[Si](OC)(OC)OCC(N)=O KOUONPVXNPOEHQ-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 101710162828 Flavin-dependent thymidylate synthase Proteins 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 101710135409 Probable flavin-dependent thymidylate synthase Proteins 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- CODVACFVSVNQPY-UHFFFAOYSA-N [Co].[C] Chemical compound [Co].[C] CODVACFVSVNQPY-UHFFFAOYSA-N 0.000 description 1
- NJSVDVPGINTNGX-UHFFFAOYSA-N [dimethoxy(propyl)silyl]oxymethanamine Chemical compound CCC[Si](OC)(OC)OCN NJSVDVPGINTNGX-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical compound [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 239000012994 photoredox catalyst Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000004984 smart glass Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- RYTQKVZHGHLRCO-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC.CCCCCCCCCCCCCC RYTQKVZHGHLRCO-UHFFFAOYSA-N 0.000 description 1
- VIFIHLXNOOCGLJ-UHFFFAOYSA-N trichloro(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)silane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CC[Si](Cl)(Cl)Cl VIFIHLXNOOCGLJ-UHFFFAOYSA-N 0.000 description 1
- BNCXNUWGWUZTCN-UHFFFAOYSA-N trichloro(dodecyl)silane Chemical compound CCCCCCCCCCCC[Si](Cl)(Cl)Cl BNCXNUWGWUZTCN-UHFFFAOYSA-N 0.000 description 1
- PYJJCSYBSYXGQQ-UHFFFAOYSA-N trichloro(octadecyl)silane Chemical compound CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl PYJJCSYBSYXGQQ-UHFFFAOYSA-N 0.000 description 1
- RCHUVCPBWWSUMC-UHFFFAOYSA-N trichloro(octyl)silane Chemical compound CCCCCCCC[Si](Cl)(Cl)Cl RCHUVCPBWWSUMC-UHFFFAOYSA-N 0.000 description 1
- LTJCYCBSXSKGTR-UHFFFAOYSA-N trichloro(tridec-12-enyl)silane Chemical compound Cl[Si](Cl)(Cl)CCCCCCCCCCCC=C LTJCYCBSXSKGTR-UHFFFAOYSA-N 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
Abstract
The invention discloses a light modulation apparatus. The above-mentioned optical modulation apparatus includes: a first substrate and a second substrate disposed opposite to each other; a first electrode disposed on the first substrate; a first hydrophobic dielectric layer covering the first electrode; a second hydrophobic dielectric layer disposed on the second substrate; the first protrusion and the second protrusion are respectively arranged on the first substrate; the second electrode is arranged on the first substrate, wherein the first electrode and the second electrode are respectively close to the second protrusion and the first protrusion; and the first liquid and the second liquid are arranged between the first substrate and the second substrate, wherein when no voltage is applied to the first electrode and the second electrode, the first liquid is positioned right above the second electrode, and an interface between the first liquid and the second liquid is positioned above the first electrode.
Description
Technical field
The present invention relates to a kind of light modulation device, particularly a kind of light modulation device making the moistening technology of electricity consumption.
Background technology
Electricity moistening (electro-wetting) technology is widely used in the field such as display (display) or liquid optics deflection device (liquid deflector) due to the feature such as have low power consumption power, wide viewing angle, high reflectance, low driving voltage, structure is simple, production cost is low.
But, traditional electrical wet-type display (electro-wetting display, EWD) technology belongs to usually black (normally black) characteristic, and this characteristic is applied to display or smart window, needs are consumed the energy for a long time, therefore has the demand of proposition usually bright (normally transparent).In addition, conventional liquid optics deflection device structure utilizes lateral electrodes to control the distribution of polar solvent and non-polar solution to carry out the deviation of light.But the technology difficulty of the lateral electrodes of conventional liquid optics deflection device is high and complicated, yield is low high with cost, therefore not easily commercialization.
Therefore in this technical field, need a kind of light modulation device of the moistening technology of electricity consumption that makes to solve the problems referred to above.
Summary of the invention
The invention provides a kind of light modulation device, comprising: first substrate and second substrate, positioned opposite to each other; First electrode, is arranged on above-mentioned first substrate; First hydrophobicity dielectric layer, covers above-mentioned first electrode; Second hydrophobicity dielectric layer, is arranged on above-mentioned second substrate; First ridge and the second ridge, be arranged on above-mentioned first substrate respectively; Second electrode, is arranged on above-mentioned first substrate, and wherein above-mentioned first electrode and above-mentioned second electrode are respectively near above-mentioned second ridge and above-mentioned first ridge; First liquid and second liquid, be arranged between above-mentioned first substrate and above-mentioned second substrate, when wherein above-mentioned first electrode and above-mentioned second electrode do not apply voltage, above-mentioned first liquid is positioned at directly over above-mentioned second electrode, and the interface between above-mentioned first liquid and above-mentioned second liquid is positioned at the top of above-mentioned first electrode.
The present invention also provides a kind of light modulation device, comprising: first substrate and second substrate, positioned opposite to each other; First electrode, is arranged on above-mentioned first substrate; First hydrophobicity dielectric layer, covers above-mentioned first electrode; Second hydrophobicity dielectric layer, is arranged on above-mentioned second substrate; First ridge and the second ridge, be arranged on above-mentioned first substrate respectively; Second electrode, is arranged on above-mentioned first substrate, and wherein above-mentioned first electrode and above-mentioned second electrode are respectively near above-mentioned second ridge and above-mentioned first ridge; First liquid and second liquid, be arranged between above-mentioned first substrate and above-mentioned second substrate, when wherein above-mentioned first electrode and above-mentioned second electrode do not apply voltage, above-mentioned first liquid is positioned at directly over above-mentioned second electrode, and the interface between above-mentioned first liquid and above-mentioned second liquid is positioned at the top of above-mentioned first electrode; 3rd electrode, is arranged on above-mentioned second substrate, and is oppositely arranged with above-mentioned second electrode.
Accompanying drawing explanation
Fig. 1 a is the sectional view of light modulation device when not applying voltage of one embodiment of the invention;
Fig. 1 b is the sectional view of light modulation device when applying voltage of one embodiment of the invention;
Fig. 2 is the sectional view of light modulation device when not applying voltage of another embodiment of the present invention;
Fig. 3 a is the sectional view of light modulation device when not applying voltage of further embodiment of this invention;
Fig. 3 b is the sectional view of light modulation device when applying voltage of further embodiment of this invention;
Fig. 4 is the light modulation device of the present invention's another embodiment again sectional view when not applying voltage.
[description of reference numerals of main element]
The moistening display element of 500a, 500b, 500c, 500d electricity;
200 first substrates;
201,228, b1, b2 end face;
203 bottom surfaces;
202 second substrates;
204 first electrodes;
206,226 second electrodes;
208 first hydrophobicity dielectric layers;
212 second hydrophobicity dielectric layers;
210 first ridges;
218 second ridges;
214 first liquids;
216 second liquids;
220,240,238 power supplys;
222,242,244 positive poles;
224 negative poles;
236,236b interface;
236a surface;
232 the 3rd electrodes;
300 pixels;
300a, 300b sub-pixel;
H1, h2 height.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in further detail.
In accompanying drawing or instructions text description, similar or identical element or part all use identical Reference numeral.And in the accompanying drawings, the shape of embodiment or thickness may be exaggerated, to simplify or convenient mark.Moreover, in accompanying drawing, the part of each element will to describe explanation respectively, it should be noted that, the element not showing in figure or describe, in art known by those of ordinary skill, in addition, specific embodiment is only the ad hoc fashion that open the present invention uses, and it is also not used to limit the present invention.
The embodiment of the present invention provides a kind of light modulation device, it utilizes the two groups of plane electrodes, the hydrophilic barricade in edge and the central hydrophibic barricade that are arranged on same substrate, is made into usually bright (normallytransparent) electric wet-type display of one or electric moistening optics deflection device (liquid deflector).Also the material needed for Show Color can be placed in polar solvent, form color polarity solution.
Fig. 1 a is the sectional view of light modulation device 500a when not applying voltage of one embodiment of the invention.The light modulation device 500a of the present embodiment can be one usually bright (normally transparent) electric wet-type display, and it comprises first substrate 200 positioned opposite to each other and second substrate 202.In an embodiment of the present invention, first substrate 200 and second substrate 202 can be a rigid substrate, and its material can comprise glass, polymer base material or metal.In an alternative embodiment of the invention, first substrate 200 and second substrate 202 can be Flexible Soft substrate, its material can comprise polyethylene terephthalate (poly (ethylene terephthalate), PET), PEN (Polyethylenenaphthalate, PEN), polycarbonate (Polycarbonate, PC), polyethersulfone (Polyethersulfone, or Polyimide (Polyimide, PI) PES).
As shown in Figure 1a, the first electrode 204 is arranged on the end face 201 of first substrate 200.In one embodiment of this invention, first electrode 204 can comprise metal or oxide, such as aluminium, silver, tin indium oxide (indium tin oxide, ITO), molybdenum and tungsten alloy (molybdenum tungsten, or indium zinc oxide (indium zinc oxide, IZO) MoW).First hydrophobicity dielectric layer 208 is arranged on the end face 201 of first substrate 200, and covers the first electrode 204.In addition, the second hydrophobicity dielectric layer 212 is arranged on the bottom surface 203 of second substrate 202, and covers second substrate 202.In one embodiment of this invention, the first hydrophobicity dielectric layer 208 and the second hydrophobicity dielectric layer 212 are made up of dielectric layer and hydrophobic layer usually, and the material of dielectric layer can comprise monox (SiO
x), silicon nitride (SiN
x), silicon oxynitride, aluminium oxide (Al
2o
3), tantalum oxide (Ta
2o
3), titanium dioxide (TiO
2), barium titanate (bariumtitanate, BaTiO
3), the combination of polyvinylidene fluoride resin (polyvinylidene difluoride, PVDF), above-mentioned material or other dielectric coefficient macromolecule layer that is greater than 2.Hydrophobic layer can comprise fluoro containing polymers, quasi cobalt carbon diaphragm or autohemagglutination silane molecule.Fluoro containing polymers is such as TeflonAF-1600 (Dupont), trade name is the fluoro containing polymers (company: ASAHI GlassCO., LTD) of " Cytop " or trade name is the fluoro containing polymers (company: Cytonixcorporation) of " Cytonix ".And autohemagglutination silane molecule comprises octadecyl trichlorosilane alkane (octadecyltrichlorosilane, OTS), 3, 3, 3-trifluoropropylmethyldichlorosilane (3, 3, 3trifluoro-propylmethyl dichlorosilane, PMDCS), ten three fluoro-1, 1, 2, 2-tetrahydrochysene octyl trichlorosilane (tridecafluoro-1, 1, 2, 2-tetrahydrooctyl trichlorosilane, FOTS), ten seven fluoro-1, 1, 2, 2-tetrahydrochysene decyl trichlorosilane (heptadecafluoro-1, 1, 2, 2-tetrahydrodecyltrichlorosilane, FDTS), decyl trichlorosilane (dodecyl trichlorosilane, DDTCS), dimethyldichlorosilane (dimethyldichlorosilane, DDMS), vinyl undecyl trichlorosilane (vinylundecyl tirchlorosilane, or aminocarbonyl propyl trimethoxy silane (aminopropyl trimethoxysilane V11TCS), APTMS).In an embodiment of the present invention, first hydrophobicity dielectric layer 208 and the second hydrophobicity dielectric layer 212 can be the dielectric/insulation course with hydrophobic (hydrophobic) surface, or the hydrophobic layer of dielectric/insulation, or by the composite bed of hydrophobic layer and dielectric/stacked dielectric layer.
As shown in Figure 1a, light modulation device 500a also comprises the first ridge 210 and the second ridge 218, and it is arranged at above first substrate 200 respectively.In the present embodiment, first ridge 210 and the second ridge 218 can be considered the pixel barricade of electric wet-type display, wherein the first ridge 210 is for defining the scope of a pixel (pixel) 300 of electric wet-type display, and the shape of the pixel 300 that the first ridge 210 defines can comprise rectangle, square, triangle, circle, fan-shaped and sexangle.In one embodiment, the second ridge 218 is arranged at the centre position of the pixel 300 that the first ridge 210 defines, and single pixel 300 is divided into two sub-pixels 300a, 300b.And the first ridge 210 surrounds the second ridge 218 therefore.In an embodiment of the present invention, the bottom surface b1 of the first ridge 210 and the bottom surface b2 copline of the second ridge 218, and both meetings contact the end face 228 of the first hydrophobicity dielectric layer 208, and the height h2 of the second ridge 218 is lower than the height h1 of this first ridge 210.
In an alternative embodiment of the invention, optionally first a Patternized technique is carried out to form hydrophobicity dielectric pattern (figure does not show) to the first hydrophobicity dielectric layer 208, then the first ridge 210 and the second ridge 218 are arranged at above first substrate 200.In more detail, in an alternative embodiment of the invention, when the first hydrophobicity dielectric layer 208 is such as having the dielectric/insulation course on hydrophobic (hydrophobic) surface, or when there is the single layer structure of hydrophobic layer of dielectric/insulating property, after forming hydrophobicity dielectric pattern, the first ridge 210 can contact the end face 201 of first substrate 200 with bottom surface b1, b2 of the second ridge 218.In still another embodiment of the process, when the first hydrophobicity dielectric layer 208 is the lamination layer structure of hydrophobic layer and dielectric/stacked dielectric layer, because only Patternized technique can be carried out to hydrophobic layer or to hydrophobic layer and dielectric/insulation course, so after forming hydrophobicity dielectric pattern, the first ridge 210 and bottom surface b1, b2 of the second ridge 218 can contact the end face of the dielectric/insulation course of the first hydrophobicity dielectric layer 208 or the end face 201 of first substrate 200.
In an embodiment of the present invention, the material of the first ridge 210 and the second ridge 218 can be the Other substrate materials of ultraviolet (UV) sclerosis or thermmohardening, its chemical constitution can contain polyethylene group (polyethylene glycol-), polyurethane ester group (polyurethane-), polyamide system group (polyamide-), or the group such as polymethylacrylic acid 2-hydroxyl ethyl ester group (poly (2-hydroxy ethylmethacrylate)-based), such as polyepoxide (polyepoxide), polyglycol (polyethylene glycol), polycarbamate (polyurethane), polyamide (polyamide), the polymethylacrylic acid 2-hydroxyl ethyl ester (series such as poly (2-hydroxy ethyl methacrylate).
In an embodiment of the present invention, the contact angle of the second ridge 218 pairs of water is designed to the contact angle being greater than the first ridge 210 pairs of water.That is, make the first ridge 210 more hydrophilic, make the more not hydrophilic or comparatively oleophylic of the second ridge 218.
Refer again to Fig. 1 a, the second electrode 206 is arranged on first substrate 200.In the present embodiment, second electrode 206 is arranged on the end face 228 of the first hydrophobicity dielectric layer 208, and pixel 300 is divided into two sub-pixels 300a, 300b due to the second ridge 218, so all can arrange first electrode 204 and second electrode 206 in each sub-pixel 300a or 300b, and the first electrode 204 in each sub-pixel 300a or 300b and the second electrode 206 are respectively near the second ridge 218 and the first ridge 210.But the embodiment of the present invention does not limit the quantity of the first electrode 204 and the second electrode 206, and it can be determined according to the design of light modulation device.In embodiments of the present invention, the first electrode 204 can be considered a pixel electrode (pixel electrode), and the second electrode 206 can be considered a public electrode (common electrode).Second substrate 202 does not arrange any electrode.
As shown in Figure 1a, light modulation device 500a comprises first liquid between this first substrate 200 and second substrate 202 214 and second liquid 216.In an embodiment of the present invention, first liquid 214 can be polar liquid, and second liquid 216 can be low pole liquid or non-polar liquid.In an embodiment of the present invention, first liquid 214 can comprise water, aqueous solution or alcohols, in addition among first liquid 214, still electrolyte can be added, such as potassium chloride (KCl) or sodium chloride (NaCl), to increase ionic conductivity, in addition, also can add interfacial agent (surfactant), in order to reduce the surface tension of solution.In an embodiment of the present invention, second liquid 216 can comprise silicone oil (silicon oil), C
10~ C
16alkanes, dyestuff (dye) or pigment (pigment).Wherein C
10~ C
16alkanes such as decane (decane), dodecane (dodecane), the tetradecane (tetradecane) or hexadecane (hexadecane).Therefore, when the first electrode 204 and the second electrode 206 do not apply voltage, first liquid 214 contacts with the first more hydrophilic ridge 210, and second liquid 216 is not with more hydrophilic or contact compared with the second ridge 218 of oleophylic, and second liquid 216 is surrounded by first liquid 214.In an embodiment of the present invention, can further by the volume ratio of first liquid 214 and second liquid 216 in design pixel 300, make the first electrode 204 and the second electrode 206 when not applying voltage (Fig. 1 a), first liquid 214 is positioned at directly over the second electrode 206, and the interface 236 between first liquid 214 and second liquid 216 is designed to the top being positioned at the first electrode 204.Further, in the present embodiment, first liquid 214 directly contacts with the second electrode 206.In an embodiment of the present invention, pigment or dyestuff can be added in first liquid 214, make it be distributed in first liquid 214, make first liquid 214 present the color wanted, and make second liquid 216 for transparent.When first electrode 204 of light modulation device 500a and the second electrode 206 do not apply voltage, transparent second liquid 216 (low pole liquid or non-polar liquid) is filled in the non-edge of the pixel 300 of light modulation device 500a substantially, and therefore the pixel 300 of light modulation device 500a presents transparent substantially.
Fig. 1 b is the sectional view of light modulation device 500a when applying voltage.As shown in Figure 1 b, in one embodiment of this invention, when the first electrode 204 (pixel electrode) is connected to the positive pole 222 of power supply 220, and the second electrode 206 (public electrode) is when being connected to the negative pole 224 of power supply 220, can by more hydrophilic first liquid 214 (polar liquid) toward drop-down (close to first substrate 200) to cover first electrode 204 and second electrode 206 of two sub-pixels 300a, 300b.Notice that the surperficial 236a of first liquid 214 presents convex, because the second ridge 218 is more not hydrophilic or comparatively oleophylic, covering second ridge 218 so first liquid 214 can not climb.In the embodiment that first liquid 214 adds pigment or dyestuff, the pixel 300 of light modulation device 500a can present color when applying voltage.According to above-mentioned character, the light modulation device 500a of one embodiment of the invention is called usually bright (normally transparent) electric wet-type display.
Fig. 2 is the sectional view of light modulation device 500b when not applying voltage of another embodiment of the present invention, the difference of the light modulation device 500a shown in itself and Fig. 1 a is, second electrode 226 of light modulation device 500b is arranged between first substrate 200 and the first hydrophobicity dielectric layer 208, and with the first electrode 204 copline.Therefore, light modulation device 500b is not when applying voltage, and first liquid 214 is positioned at directly over the second electrode 206, but directly do not contact with the second electrode 206.
Fig. 3 a is the sectional view of light modulation device 500c when not applying voltage of further embodiment of this invention.The light modulation device 500c of the present embodiment can be a kind of electric moistening optics deflection device (liquiddeflector), the difference of the light modulation device 500a shown in itself and Fig. 1 a is, the second substrate 202 of light modulation device 500c is additionally arranged one the 3rd electrode 232.As shown in Figure 3 a, the 3rd electrode 232 is arranged between this second substrate 202 and second hydrophobicity dielectric layer 212, and is oppositely arranged with the second electrode 206.In addition, the 3rd electrode 232 is near the first ridge 210.In the present embodiment, the first electrode 204 and the 3rd electrode 232 can be considered as a pixel electrode (pixel electrode) respectively, and the second electrode 206 can be considered a public electrode (common electrode).In the present embodiment, can further by the volume ratio of first liquid 214 and second liquid 216 in design pixel 300, make the first electrode 204, second electrode 206 and the 3rd electrode 232 when not applying voltage (Fig. 3 a), first liquid 214 is positioned at directly over the second electrode 206, and is positioned at immediately below the 3rd electrode 232.Further, the interface 236 between first liquid 214 and second liquid 216 is positioned at the top of the first electrode 204.In addition, in the present embodiment, first liquid 214 directly can contact with the second electrode 206.Therefore, when the first electrode 204, second electrode 206 and the 3rd electrode 232 do not apply voltage, more not hydrophilic or be filled in the non-edge of pixel 300 of light modulation device 500c substantially compared with the second liquid 216 of oleophylic, and the thickness of second liquid 216 in pixel 300 is homogeneous.Therefore, when light expose to do not execute alive light modulation device 500c time, most light can by the homogeneous second liquid 216 of thickness unlikely generation deviation.
Fig. 3 b is the sectional view of light modulation device 500c when applying voltage.As shown in Figure 3 b, in the present embodiment, when the first electrode 204 (pixel electrode) is connected to the positive pole 242 of power supply 240,3rd electrode 232 (pixel electrode) is connected to the positive pole 244 of another power supply 238, and the second electrode 206 (public electrode) is when being connected to the negative pole of power supply 240 and power supply 238, can by more hydrophilic first liquid 214 (polar liquid) toward drop-down (close to first substrate 200) to cover first electrode 204 and second electrode 206 of two sub-pixels 300a, 300b.Notice that the interface 236b between first liquid 214 and second liquid 216 can extend from the 3rd electrode 232 towards the second ridge 218.In the present embodiment, interface 236b can be an inclined-plane or a curved surface.Because the second ridge 218 is more not hydrophilic or comparatively oleophylic, covering second ridge 218 so first liquid 214 can not climb.Therefore, when the first electrode 204, second electrode 206 and the 3rd electrode 232 apply voltage, the second liquid 216 (low pole liquid or non-polar liquid) in the pixel 300 of light modulation device 500c can be extruded as different shapes (interior thickness of second liquid 216 is greater than edge thickness) by first liquid 214.Therefore, when light expose to execute alive light modulation device 500c time, most light can produce deviation by having the second liquid 216 of convex lens character.According to above-mentioned character, the light modulation device 500c of one embodiment of the invention can be used as electric moistening optics deflection device (liquid deflector).
Fig. 4 is the sectional view of light modulation device 500d when not applying voltage of the present invention's another embodiment again, the difference of the light modulation device 500c shown in itself and Fig. 3 a is, second electrode 226 of light modulation device 500d is arranged between first substrate 200 and the first hydrophobicity dielectric layer 208, and with the first electrode 204 copline.Therefore, light modulation device 500b is not when applying voltage, and first liquid 214 is positioned at directly over the second electrode 206, and is positioned at immediately below the 3rd electrode 232, but directly do not contact with the second electrode 206.
The embodiment of the present invention provides a kind of light modulation device, it utilizes electric moistening technology, to arrange in pairs or groups two groups of plane electrodes be arranged on same substrate, add the hydrophilic high barricade being positioned at pixel edge and the hydrophobic short barricade being positioned at pixel central authorities, be made into an electric wet-type display.When the first electrode of the light modulation device of the embodiment of the present invention and the second electrode be not when applying voltage, transparent second liquid (polar liquid) is filled in the non-edge of the pixel of light modulation device substantially, and therefore the pixel of light modulation device presents transparent substantially.When the first electrode and second electrode application voltage of the light modulation device of the embodiment of the present invention, can, by more hydrophilic colored first liquid (polar liquid) toward drop-down to cover the first electrode and the second electrode, make the pixel of light modulation device can present color when applying voltage.According to above-mentioned character, the light modulation device of one embodiment of the invention can be used as usually bright (normally transparent) electric wet-type display.Compared to known usually black (normally black) electric wet-type display, the light modulation device of the embodiment of the present invention greatly can reduce the consumption of electric power.
In addition, the light modulation device of the embodiment of the present invention also can arrange three electrode relative with the second electrode on another substrate, is made into an electric moistening optics deflection device.When the first electrode of the light modulation device of the embodiment of the present invention, the second electrode and the 3rd electrode be not when applying voltage, most light can by the homogeneous second liquid (low pole liquid or non-polar liquid) of thickness unlikely generation deviation.When the first electrode of the light modulation device of the embodiment of the present invention, the second electrode and the 3rd electrode application voltage, the second liquid in the pixel of light modulation device can by first liquid (polar liquid) extruding for the shape being similar to convex lens makes light produce deviation.Compared to the moistening optics deflection device of known electricity, the electrode of the light modulation device of the embodiment of the present invention is all produced on planar substrates, can avoid making the complicated technology of known lateral electrodes and the shortcoming such as homogeneity is not good, technology stability is high, and can be compatible with existing panel process, have commercial potentiality.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a light modulation device, comprising:
First substrate and a second substrate, it is positioned opposite to each other;
First electrode, is arranged on this first substrate;
First hydrophobicity dielectric layer, covers this first electrode;
Second hydrophobicity dielectric layer, is arranged on this second substrate;
First ridge and one second ridge, be arranged on this first substrate respectively; And
First liquid and second liquid, be arranged between this first substrate and this second substrate, it is characterized in that:
Described light modulation device also comprises the second electrode be arranged on this first substrate, and this first electrode and this second electrode are respectively near this second ridge and this first ridge; And
When this first electrode and this second electrode do not apply voltage, this first liquid is positioned at directly over this second electrode, and the interface between this first liquid and this second liquid is positioned at the top of this first electrode.
2. light modulation device as claimed in claim 1, it is characterized in that, this first liquid is polar liquid, and this second liquid is low pole liquid or non-polar liquid.
3. light modulation device as claimed in claim 1, it is characterized in that, this first ridge surrounds this second ridge.
4. light modulation device as claimed in claim 1, is characterized in that, the bottom surface of this first ridge and the bottom surface copline of this second ridge.
5. light modulation device as claimed in claim 1, it is characterized in that, this first ridge contacts this first hydrophobicity dielectric layer with the bottom surface of this second ridge.
6. light modulation device as claimed in claim 1, it is characterized in that, this first ridge contacts this first substrate with the bottom surface of this second ridge.
7. light modulation device as claimed in claim 1, is characterized in that, the height of this second ridge is lower than the height of this first ridge.
8. light modulation device as claimed in claim 1, it is characterized in that, this second electrode is arranged on this first hydrophobicity dielectric layer, and this first liquid directly contacts with this second electrode.
9. light modulation device as claimed in claim 1, it is characterized in that, this second electrode is arranged between this first substrate and this first hydrophobicity dielectric layer, and with this first electrode copline.
10. light modulation device as claimed in claim 9, it is characterized in that, this first electrode is a pixel electrode, and this second electrode is a public electrode.
11. light modulation devices as claimed in claim 1, is characterized in that, the contact angle of this second ridge to water is greater than this first ridge to the contact angle of water.
12. light modulation devices as claimed in claim 1, is characterized in that, this second substrate not arrange any electrode.
13. light modulation devices as claimed in claim 1, is characterized in that, also comprise:
3rd electrode, is arranged on this second substrate, and is oppositely arranged with this second electrode.
14. light modulation devices as claimed in claim 13, is characterized in that, the 3rd electrode is arranged between this second substrate and this second hydrophobicity dielectric layer.
15. light modulation devices as claimed in claim 1, it is characterized in that, also comprise pigment or dyestuff, it is distributed in this first liquid.
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