WO2007025628A1 - Verfahren zur strukturierung von oberflächen von substraten - Google Patents
Verfahren zur strukturierung von oberflächen von substraten Download PDFInfo
- Publication number
- WO2007025628A1 WO2007025628A1 PCT/EP2006/007708 EP2006007708W WO2007025628A1 WO 2007025628 A1 WO2007025628 A1 WO 2007025628A1 EP 2006007708 W EP2006007708 W EP 2006007708W WO 2007025628 A1 WO2007025628 A1 WO 2007025628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- structuring
- substrate
- substrates
- structured
- coating
- Prior art date
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000003980 solgel method Methods 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000011521 glass Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000009499 grossing Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000003618 dip coating Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004049 embossing Methods 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
- C03C17/25—Oxides by deposition from the liquid phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/007—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
- C04B41/4535—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application applied as a solution, emulsion, dispersion or suspension
- C04B41/4537—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application applied as a solution, emulsion, dispersion or suspension by the sol-gel process
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
- C04B41/90—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being a metal
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0284—Diffusing elements; Afocal elements characterized by the use used in reflection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/30—Change of the surface
- B05D2350/33—Roughening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/30—Change of the surface
- B05D2350/33—Roughening
- B05D2350/38—Roughening by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/068—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using ionising radiations (gamma, X, electrons)
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/08—Glass having a rough surface
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24612—Composite web or sheet
- Y10T428/2462—Composite web or sheet with partial filling of valleys on outer surface
Definitions
- the present invention relates to methods for structuring surfaces of substrates, wherein a substrate is structured in a first step and in a second step for partially smoothing the
- Structuring is coated in the sol-gel method, in particular a diffusely scattering surface is obtained. Structured substrates in this way and their use in optical applications are also the subject of the present invention.
- Structured surfaces play a role in a variety of applications and processes.
- Surface-structured substrates are also becoming increasingly important in optical applications, e.g. as diffusers or as reflectors.
- Optical diffusers are scattered surfaces where incident light diffuses diffusely.
- Common examples of the use of optical diffusers are, for example, focusing screens in photography or projection technology onto which an image is projected. The light that strikes the screen for imaging is scattered by it, ie deflected in different directions. This scattering ensures that the image projected onto the ground-glass screen can be recognized from different directions.
- the present invention accordingly provides methods for structuring surfaces of substrates, wherein a substrate is structured in a first step and is coated in a second step for partially smoothing the structuring in the sol-gel process, in particular a diffusely scattering surface is obtained.
- a structured surface in the sense of the present invention is a surface which has a regular or irregular structure, in particular in the form of grooves, depressions or protrusions of any kind.
- the depressions and bulges can assume any shape and are in the nanometer to millimeter size range.
- the method according to the invention has the advantage that it is simple to carry out and offers the possibility of producing diffusely scattering structurings.
- the user is thus given the opportunity to produce the required structured surface for his needs, both process steps are technically easy to handle, easy to perform and easy to control.
- Suitable applications are all optical systems in which a scattering of the light is needed.
- the method according to the invention may be suitable for the production of diffusers for liquid crystal displays.
- a backlight for LCDs which ensures a sufficient contrast.
- battery-LCD's for example in laptops
- reflectors that should fulfill at least the following requirements:
- Suitable substrates in the present invention are glass substrates, ceramic substrates, metal substrates or plastic substrates, preferably glass, metal or ceramic substrates and very particularly preferably glass substrates or metal substrates. Glass substrates or metal substrates having structured surfaces are particularly suitable for optical applications, in particular for LCD 's.
- Suitable materials for the glass substrates are all known glasses, for example float glass, cast glass from all glass compositions known to those skilled in the art, A, C, D, E, ECR, R or S glasses.
- metal substrates are, for example, polished or blank drawn metal sheets with a mean roughness of ⁇ 1 micron.
- Suitable plastic substrates consist for example of PMMA or polycarbonate.
- Suitable ceramic substrates are all ceramics known to the person skilled in the art, in particular transparent ceramics, which can be structured by one of the methods mentioned below.
- structuring of the surface of the substrate takes place in a first step.
- the structuring can be done by the action of particle beams, laser beams, etching or embossing.
- the structuring method is adapted to the respective substrate in order to achieve optimum structuring.
- embossing processes are primarily suitable for substrates made of plastics or - A -
- Metals wherein preferably plastics are structured by means of embossing.
- Etching methods are particularly suitable for glass or ceramic substrates, wherein all variants of etching methods known to those skilled in the art can be used, e.g. RIE (Reactive Ion Etching).
- a structuring with particle beams takes place, it being possible for the particle beams to be sandblasting or electron beams.
- sandblasting means all particle beams whose particles are not to be assigned to the atomic or subatomic size range (for example electrons).
- the size of the particles can be in a range from 1 .mu.m to 4 mm, depending on the desired structuring and the particulate material used.
- the particles preferably have a size of 5 ⁇ m to 1 mm and in particular of 20 ⁇ m to 200 ⁇ m.
- Suitable blasting materials are all common materials, e.g. Sand, glass, corundum, plastics, ceramics, nut shells, corncob granules, steel of all grades and composition, metals, e.g. Aluminum and / or mixtures thereof.
- it is glass or corundum particles, in particular with a particle size of 5 to 100 microns and most preferably with a particle size of 50 to ⁇ O microns.
- the jet pressure as well as the angle of incidence and the direction of the jet medium also influence the structure of the surface.
- jet pressures up to 10 bar, preferably up to 6 bar are used, the angle of incidence usually being between 5 and 90 °, preferably between 30 and 80 °.
- the respective adaptation of the mentioned parameters to the particle materials for setting the desired type and depth of structuring is subject to the general skill of a person skilled in the art.
- the actual blasting process becomes Achieving the required reproducibility of the structure mutatis mutandis performed by a suitable machine.
- the structures obtained in this way usually still have edges that can adversely affect the properties in later applications.
- a smoothing of the structuring by coating in the sol-gel process is carried out in a second step of the method according to the invention.
- depressions created during structuring are partially refilled and corresponding edges are smoothed by additional coating (see Figure 1).
- appropriate sols for example of T ⁇ O 2 and SiO 2 sols
- a refractive index adaptation for controlling the optical effects can be achieved.
- the second step taking place in the method according to the invention thus serves not only to smooth the structuring produced in the first step but also to adapt the optical properties of the structured surface obtained therewith.
- Suitable sols for the sol-gel process are all sols known to those skilled in the art, for example sols of compounds of the elements titanium, zirconium, silicon, aluminum and / or mixtures thereof.
- silicon sols are used. Sols or precursors of this type are known and commercially available.
- the silicon sols are those in which the SiO 2 particles have been obtained by hydrolytic polycondensation of tetraalkoxysilane, in particular tetraethoxysilane (TEOS), in an aqueous-alcoholic-ammoniacal medium.
- TEOS tetraethoxysilane
- aqueous and / or solvent-containing sols prepared in another way can also be used as the coating solution.
- the coating solution may additionally contain surfactants.
- the usable coating solutions for the sol-gel process may contain other components, such as leveling agents or complexing agents.
- the respective solids content in the coating solution is usually in the range of 0.1 to 20 wt .-%, preferably 2 to 10 wt .-%.
- Coating solutions of the abovementioned types are described, for example, in DE 198 28 231, US Pat. No. 4,775,520, US Pat. No. 5,378,400, DE 196 42 419, EP 1 199 288 or WO 03/027015, the disclosure contents of which are hereby included by reference in the present invention.
- the coating in the sol-gel process is carried out according to the general principles known to the person skilled in the art, e.g. by dip coating, spraying or by flow curtain.
- dip coating the structured substrate is immersed in the coating solution; in the spray process, the substrate is coated with the coating medium by means of single-component or multi-component nozzles.
- the coating is carried out through a free-flowing curtain of the coating medium, under which the substrate to be coated is moved through.
- the coating is carried out in the sol-gel process by means of dip coating.
- the prestructured substrate is dipped with a lifting device into a cuvette filled with sol and then withdrawn from the cuvette at a uniform speed.
- the thickness of the applied layer depends on the depth and structure of the structuring carried out in the first method step. If structuring takes place with the formation of many edges, corners and steps or greater differences in height between the highest and lowest points of the structure, then the proportion of the smoothing layer must be correspondingly greater.
- An exact coordination of the individual parameters structuring and subsequent smoothing is subject to the skill of the art.
- the individual parameters are preferably matched to one another in such a way that the structured surface fulfills the conditions mentioned above for an optimal diffuser / reflector. Controlling the thickness of the coating in the
- the sol-gel process essentially depends on the pulling rate of the structured substrate during coating. The higher the pulling speed, the thicker the layer obtained. Usually, the drawing speeds are in the range of 0.1 to 100 mm / sec, and preferably in the range of 1.6 to 8 mm / sec. Of course, the coating process can also be repeated one or more times until the desired smoothing of the structuring is achieved.
- the structured substrate can be calcined. Calcination removes the residual solvent content from the applied layer.
- the calcination temperatures are usually from 300 to 700 ° C., in particular from 500 to 600 ° C.
- the structured surface is additionally coated with a metal layer.
- This additional step follows the coating in the sol-gel process and can be carried out at any time afterwards.
- the coating with a metal layer may be wet-chemically, e.g. by suitable reduction methods, in the CVD and / or PVD method, the PVD methods being preferred.
- Suitable metals for the additional metal layer are, for example, aluminum, silver, chromium, nickel or other reflective metal layers.
- the metal layer is aluminum.
- the thickness of the additional metal layer depends on the material and the desired properties and is usually in the range of 10 to 150 nm and in particular in the range of 30 to 100 nm.
- substrates with a structured surface prepared by one of the processes according to the invention.
- Another object of the present invention is the use of structured surface substrates obtainable according to the methods described above as diffusers and / or reflectors in optical applications.
- the optical applications may be any of the optical applications known to those skilled in the art, e.g. cameras of all types, projection devices and screens, liquid crystal displays, magnification systems, e.g. Microscopes, etc.
- the substrates according to the invention are preferably used in liquid crystal displays.
- the structured substrates according to the present invention can be used particularly advantageously, e.g. as a reflective background to replace a backlight and thus reduce the power consumption of the display. Further fields of application of the structured substrates according to the present invention will be apparent to those skilled in the art without inventive step.
- Example 1 A glass plate having a thickness of 1 mm is filled with glass beads of a
- Size range from 10 to 50 microns at a jet pressure of 2 bar and irradiated from a distance of 200 mm.
- the plate is dedusted and a total of three times in an aqueous-alcoholic SiO 2 sol (solids content: 3
- the plate is in each case for 10
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Optical Elements Other Than Lenses (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06762976A EP1920274A1 (de) | 2005-08-31 | 2006-08-04 | Verfahren zur strukturierung von oberflächen von substraten |
US12/065,171 US20080193721A1 (en) | 2005-08-31 | 2006-08-04 | Methods for Structuring Substrate Surfaces |
AU2006286834A AU2006286834B2 (en) | 2005-08-31 | 2006-08-04 | Methods for structuring substrate surfaces |
JP2008528370A JP2009508149A (ja) | 2005-08-31 | 2006-08-04 | 基材の表面を構造化する方法 |
CN200680031371XA CN101253423B (zh) | 2005-08-31 | 2006-08-04 | 用于结构化基材表面的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005041242.4 | 2005-08-31 | ||
DE102005041242A DE102005041242A1 (de) | 2005-08-31 | 2005-08-31 | Verfahren zur Strukturierung von Oberflächen von Substraten |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007025628A1 true WO2007025628A1 (de) | 2007-03-08 |
WO2007025628A8 WO2007025628A8 (de) | 2007-06-21 |
Family
ID=37057391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/007708 WO2007025628A1 (de) | 2005-08-31 | 2006-08-04 | Verfahren zur strukturierung von oberflächen von substraten |
Country Status (9)
Country | Link |
---|---|
US (1) | US20080193721A1 (de) |
EP (1) | EP1920274A1 (de) |
JP (1) | JP2009508149A (de) |
KR (1) | KR20080042150A (de) |
CN (1) | CN101253423B (de) |
AU (1) | AU2006286834B2 (de) |
DE (1) | DE102005041242A1 (de) |
TW (1) | TW200724979A (de) |
WO (1) | WO2007025628A1 (de) |
Cited By (2)
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EP2097357A2 (de) * | 2006-12-14 | 2009-09-09 | PPG Industries Ohio, Inc. | Beschichtetes nichtmetallisches blech mit gebürstetem metalleffekt und beschichtungen sowie herstellungsverfahren dafür |
US20110159445A1 (en) * | 2009-12-29 | 2011-06-30 | Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense | Method for Making a Texture on a Transparent Conductive Film of a Solar Cell |
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FR2944145B1 (fr) * | 2009-04-02 | 2011-08-26 | Saint Gobain | Procede de fabrication d'une structure a surface texturee pour dispositif a diode electroluminescente organique et structure a surface texturee |
FR2944147B1 (fr) * | 2009-04-02 | 2011-09-23 | Saint Gobain | Procede de fabrication d'une structure a surface externe texturee pour dispositif a diode electroluminescente organique et struture a surface externe texturee |
FR2953212B1 (fr) * | 2009-12-01 | 2013-07-05 | Saint Gobain | Procede de structuration de surface par gravure ionique reactive,surface structuree et utilisations. |
DE102010004741B4 (de) | 2010-01-14 | 2023-02-23 | Schott Ag | Verfahren zur Herstellung eines Verbundmaterials sowie Küchengerät |
CN103304147A (zh) * | 2012-03-07 | 2013-09-18 | 利科光学股份有限公司 | 于雾面玻璃局部形成光滑表面的方法 |
FR2992313B1 (fr) * | 2012-06-21 | 2014-11-07 | Eurokera | Article vitroceramique et procede de fabrication |
FR2993266B1 (fr) | 2012-07-13 | 2014-07-18 | Saint Gobain | Vitrage translucide comprenant au moins un motif, de preference transparent |
CN103943524A (zh) * | 2013-01-21 | 2014-07-23 | 源贸科技股份有限公司 | 具有一不平整表面的基板的检视方法 |
WO2015050750A1 (en) | 2013-10-02 | 2015-04-09 | 3M Innovative Properties Company | Microstuctured diffuser comprising first microstructured layer and coating, optical stacks, and method |
JP2017507103A (ja) | 2014-01-29 | 2017-03-16 | コーニング インコーポレイテッド | レーザーでフィーチャ加工した表示照明用ガラス |
CN105022216B (zh) * | 2014-04-16 | 2017-12-15 | 精工爱普生株式会社 | 照明装置和投影机 |
JP6712372B2 (ja) | 2015-03-02 | 2020-06-24 | エーエスエムエル ネザーランズ ビー.ブイ. | 放射システム |
CN108660404A (zh) * | 2018-03-20 | 2018-10-16 | 武汉理工大学 | 一种高红外反射复合涂层及其制备方法 |
CN110642524B (zh) * | 2019-10-31 | 2020-06-30 | 山东大学 | 一种二氧化钛纳米颗粒辅助红外纳秒激光在玻璃表面制备微结构的方法 |
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US20030214718A1 (en) * | 2002-05-16 | 2003-11-20 | Eastman Kodak Company | Light reflector with variable diffuse light reflection |
US20050157407A1 (en) * | 2002-05-28 | 2005-07-21 | Akihiro Nishida | Light diffusing sheet, optical element and image display unit |
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- 2006-08-04 CN CN200680031371XA patent/CN101253423B/zh not_active Expired - Fee Related
- 2006-08-04 WO PCT/EP2006/007708 patent/WO2007025628A1/de active Application Filing
- 2006-08-04 JP JP2008528370A patent/JP2009508149A/ja active Pending
- 2006-08-04 US US12/065,171 patent/US20080193721A1/en not_active Abandoned
- 2006-08-04 AU AU2006286834A patent/AU2006286834B2/en not_active Expired - Fee Related
- 2006-08-04 KR KR1020087007619A patent/KR20080042150A/ko not_active Application Discontinuation
- 2006-08-28 TW TW095131606A patent/TW200724979A/zh unknown
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WO2000011498A1 (en) * | 1998-08-25 | 2000-03-02 | Physical Optics Corporation | Optical element having an integral surface diffuser |
US20030175528A1 (en) * | 2001-02-16 | 2003-09-18 | Tetsuya Yoshitake | Irregular film and method of manufacturing the film |
US20030214718A1 (en) * | 2002-05-16 | 2003-11-20 | Eastman Kodak Company | Light reflector with variable diffuse light reflection |
US20050157407A1 (en) * | 2002-05-28 | 2005-07-21 | Akihiro Nishida | Light diffusing sheet, optical element and image display unit |
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EP2097357A2 (de) * | 2006-12-14 | 2009-09-09 | PPG Industries Ohio, Inc. | Beschichtetes nichtmetallisches blech mit gebürstetem metalleffekt und beschichtungen sowie herstellungsverfahren dafür |
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Also Published As
Publication number | Publication date |
---|---|
AU2006286834A1 (en) | 2007-03-08 |
CN101253423A (zh) | 2008-08-27 |
AU2006286834B2 (en) | 2012-03-08 |
JP2009508149A (ja) | 2009-02-26 |
CN101253423B (zh) | 2011-03-09 |
WO2007025628A8 (de) | 2007-06-21 |
DE102005041242A1 (de) | 2007-03-01 |
KR20080042150A (ko) | 2008-05-14 |
TW200724979A (en) | 2007-07-01 |
EP1920274A1 (de) | 2008-05-14 |
US20080193721A1 (en) | 2008-08-14 |
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