Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
  • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• • 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
  • G02F1/133502—Antiglare, refractive index matching layers
• • 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
  • G02F2203/00—Function characteristic
  • G02F2203/11—Function characteristic involving infrared radiation

Definitions

• the present invention relates to a device, in particular for a
• the invention relates to a device for a display device having at least a first disk-shaped element and a second disk-shaped element and a coating introduced between the first and second disk-shaped element.
• the invention relates to a device for a display device, comprising a first disc-shaped element and a polarizing filter.
• Display devices may include, for example, displays.
• the displays can themselves be designed with polarizers or emit their own polarized light.
• Display devices eg. B. Displays according to the prior art
• an infrared radiation-reflecting SIPLEX solar control film produced as a laminated glass by the company Haller (Kirchlengern) on the glass, in particular the disc, preferably applied to the lens of the display device.
• a transmission in the IR range that is, in the wavelength range of 780 to 2000 nm of 28%, which leads to a heating of the rear lying with such a screen equipped display device by light irradiation,
• solar radiation can not be sufficiently avoided.
• For heating by solar radiation is in particular radiation with
• films that reduce the heat input from external sunlight are, for example, laminates containing an XIR film from Southwall, Palo Alto, California, USA (Internet: www.southwall.com). In this film, a higher proportion of the unwanted sunlight is reflected in the IR spectral range, so that a slight reduction of the radiation is seen on the display or display device arranged behind it.
• this XIR film is very absorbent, so that the front glass itself is heated more than when using the Siplex solar control film.
• the XIR film is incorporated in a laminate composite, resulting in strong optical inhomogeneities, so that a practical use in the field of display glasses is not possible.
• a disadvantage of the aforementioned films is that low transmission is paid for with a high absorption. This causes the windscreen, z. As a display device heats up and heat by the heat in the overall system, here the display device is registered
• Sun exposure causes this to heat up behind you with a so equipped disk lying display device by light irradiation, especially solar radiation can not be sufficiently avoided and the display above its maximum allowable
• Working temperature is heated. This causes the display to turn black and become unreadable.
• the entire spectrum with wavelengths in the range 300 nm to about 2500 nm is relevant.
• the known solutions for reducing solar radiation aim only at the infrared range of 780 - 2500 nm, in which the human eye is not sensitive and leave the visible
• Wavelength range are coatings that reflect a high proportion of the visible light and thus reduce the energy input.
• An example of this is the product MIRONA from SCHOTT AG, which has a reflection of about 35% in the visible range.
• MIRONA from SCHOTT AG
• the disadvantage of this solution is that the contrast of the underlying display device is lowered significantly by this reflectivity.
• the ratio of the desired radiation from the display to the viewer with respect to the radiation reflected from the environment at the front of the display of the display to the viewer becomes progressively worse at higher ambient brightness and often results in complete unreadability of the display in bright daylight.
• As a solution to improve this contrast are often here with a
• Anti-reflective coating coated discs used, but then have no effective sunscreen in the visible range.
• DE-A-15 96 810 shows a large-area glazing with a metal layer, in particular a gold or copper layer, the infrared radiation and
• DE-A-195 03 510 shows a method for producing an IR-reflecting laminated glass pane.
• DE-T-694 30 986 shows a light valve with a low coating
• the object of the invention is thus to provide a device which avoids the disadvantages of the prior art.
• this object is achieved according to a first aspect of the invention in that in a system consisting of a first
• an IR-reflective coating between the first disc-shaped and the second disc-shaped element is introduced, in such a way that the first and the second disc-shaped element form a composite, wherein the space between the discs with a solid or liquid filling material is filled.
• the filler is therefore not gaseous, as in
• Insulating glass composites Insulating glass composites.
• Such a composite makes it possible to use IR-reflecting coatings, for example based on transparent metal layers, in particular silver layers, So-called low-E coatings, can be used, which have a very high reflectivity in the range of IR radiation from 780nm to 2000nm.
• the edge of the first disc-shaped element and / or the second disc-shaped element has no IR-reflecting coating. It is particularly preferred for the IR-reflecting coating to have a very high reflectivity in the wavelength range from 780 nm to 2500 nm. Ideally, the reflectivity would be 100% for wavelengths in the range of 780 nm to 2500 nm.
• Wavelength range from 780 nm to 2500 nm would thus 45% of
• the IR solar reflectivity is defined in the present application.
• IR solar reflectivity the spectral reflectivity of the IR coating in the
• polymer materials are preferably cured
• inorganic materials such as cast resin or foil, such as PCB films, PVB films, EVA films used.
• the aforementioned films may also comprise further coatings, for example further low-E layers applied to the film.
• the IR radiation highly reflective coating can be applied either to one or both of the disk-shaped elements or to the film laminated between the wheels.
• the polymer material or film is liquefied or softened by pressure and bonded to the first disk-shaped element and the second disk-shaped element, resulting in the composite.
• the highly reflective IR coating is bonded directly.
• the edge of the first disc-shaped element and the second disc-shaped element comprises a sealing material.
• One possible sealing material which can be used for this purpose is, for example, butyl rubber, which is characterized by low gas permeability.
• An alternative sealing option is the seal by a circumferential aluminum foil, which in turn is glued to a plastic with low gas permeability.
• the edge of the first and / or second disc-shaped element should be designed so that the applied low-E layers do not corrode from the side of the composite ago.
• the edge of the first and / or second disc-shaped element should be designed so that the applied low-E layers do not corrode from the side of the composite ago.
• Edge layers are used, in which the low-E layer does not go through to the edge and so the laminate can be sealed at the edge directly between the upper and lower glass.
• At least 5 mm of the disk are formed as an edge, in which the IR-reflecting coating is interrupted or has no IR-reflecting coating.
• the maximum border of the border is chosen so that the visible area is not disturbed for the viewer of the laminated glass pane.
• the first and / or the second disk-shaped element is equipped with an anti-reflection or anti-reflection coating.
• Antireflective coating or antireflection coating in particular, the reflection in the visible wavelength range of 380nm to 800nm of a disk-shaped element is significantly reduced and thus the contrast significantly increased compared to facilities without anti-reflective coating.
• the reflectance R V i S is reduced by the antireflection coating by 10% to 4% compared to a disc-shaped element not provided with an antireflection coating. If the reflectance R V i S of the disk-shaped element without antireflection coating is, for example, 8%, then the reflectance R V i S can be reduced to 0.1% to 6%, preferably to 0.2% to 4%, by the antireflection coating.
• the aforementioned reflectance R v , s is a reflectance with standard light D65 (artificial daylight) folded with the eye sensitivity. Although the reflection for individual wavelengths may be greater than, for example, 2%, the standard light D65 may have a value R V i S of 1% or less.
• the lion In order to achieve a high IR reflection and in particular an IR solar reflectivity in the range 45% to 95%, preferably from 50% to 80%, for the overall system of the two disk-shaped elements and the introduced between these solid and liquid filling materials, the lion
• the layers surrounding the silver are adapted so that the anti-reflection effect on the refractive index of the solid or liquid filler, in particular the laminating film, for. B. the PVB film is adjusted.
• refractive index matching can be achieved with cathode sputtering.
• the PVB film is adjusted.
• matching layers which preferably include oxide or oxide conductive layers
• Reflectance Rvis of the device ⁇ 2%, in particular ⁇ 1%.
• Antireflective coating provided element significantly increased.
• Anti-reflection coatings are preferably used interference layer systems. In such systems, at the interfaces of
• Antireflective coating reflects light. The at the interfaces
• reflected waves can even completely cancel themselves out by interference if phase and amplitude conditions are fulfilled.
• Such anti-reflection coatings are realized, for example, in the products AMIRAN, CONTURAN, or MIROGARD from Schott AG.
• an interference layer system for broadband antireflection coating reference is also made to EP-A-1248959, the disclosure content of which is incorporated in full in the present application.
• EP-A-1248959 the disclosure content of which is incorporated in full in the present application.
• Increasing the transmission can be achieved preferably by up to 10%.
• the antireflective or antireflective coating is preferably provided on a side of the first and / or the second disc-shaped element which points outward, ie towards the air.
• antireflection coatings or antireflex coatings come layers that are different Processes are made, into consideration. Such layers can be prepared by a sol-gel process, sputtering, etching or CVD processes. Specifically, the anti-reflection coating can be applied using one of the following application methods:
• the anti-reflective coating is using the
• Liquid technology applied wherein the layer applied by the liquid technologies layer is provided by means of one of the following techniques:
• the antireflective coating is applied with the aid of the sol-gel
• the anti-reflective coating is called
• the anti-reflection coating is produced as a multiple interference coating from the sol-gel technology
• the anti-reflection coating is produced as a triple-interference coating from the sol-gel technology, wherein the first layer has a refractive index between 1, 6 and 1, 8, the second layer has a refractive index between 1, 9 and 2.5 and the Refractive index of the third layer is between 1, 4 and 1, 55,
• the anti-reflective coating is using a
• High-vacuum technology applied layer is provided with one of the following techniques:
• the anti-reflective coating is using a
• the anti-reflective coating is using a
• the anti-reflective coating is made from one
• the anti-reflective coating is made from one
• the anti-reflection coating is produced by means of a CVD process, wherein the layer applied by means of a CVD process is provided by one of the following techniques:
• the anti-reflective coating is made from an online CVD process
• the anti-reflective coating is taken from an offline CVD
• the antireflective coating is produced by means of an etching process, wherein the layer applied by means of an etching process is provided by one of the following techniques:
• the anti-reflective coating is using a
• the anti-reflective coating is using a
• the invention which is particularly characterized in that it has on the one hand a high IR reflectivity, use in the field of display devices, in particular display devices in the outdoor area, and here preferably liquid display devices into consideration.
• a high IR reflectivity use in the field of display devices, in particular display devices in the outdoor area, and here preferably liquid display devices into consideration.
• the invention also provides a display device with a display or a display device and an auxiliary disc
• the attachment disk as a device according to the invention comprising two disk-shaped elements with intervening IR elements.
• reflective coating is formed.
• display devices in particular liquid crystal display devices but also OLED display devices or LED display devices into consideration.
• image glazing In addition to use in display devices, use as image glazing is also possible.
• the object stated in the introduction is achieved according to a second aspect of the invention in that a device for a
• Display element which consists of at least a first disc-shaped element and at least one polarizing filter.
• the polarizing filter is applied in such a way that the emitted, polarized light of a
• Display device is only slightly attenuated by the device. This is achieved according to the invention by the passage direction of the polarizer of the
• the polarizing filter transmits the greatest possible proportion of the light emitted by the display device light.
• the useful signal of the display device is transmitted to a high proportion of greater than 70%, preferably greater than 80% through the device, but at the same time the sunlight with the Schwingengsebene orthogonal to the
• Display device through the device more than 50%, preferably more than 70%. Between the device and the display device, a gap is formed, which is filled with a gaseous medium.
• Medium may be air or nitrogen or a noble gas such as helium or argon.
• Display device which forms the gap, is in the range of 1 to 500 mm, preferably 5 to 100 mm.
• Such a structure allows the polarized visible radiation, defined herein as the spectral range of 380 nm to 780 nm wavelength, to pass from the high-transmission display device of greater than 70%, preferably greater than 80%, to the viewer during the proportion of unpolarized sunlight in the visible wavelength range of the radiation reaches only about 50% of the display device.
• Solar radiation in the infrared wavelength range 780 nm to 2500 nm, are used to suppress this spectral component.
• the measures described according to the first aspect of the invention can be used for
• Reduction of the transmission of the infrared portion of the sunlight through the device are used to the display device down.
• polarizing filters are used! which as standard in the here mentioned
• Display devices are used. Display devices according to the invention described are also referred to as LC displays, liquid crystal displays, liquid crystal displays or TFT screens in which the light is generated with a backlight and a polarizing filter and by rotation of the polarization direction by liquid crystal elements in conjunction with another front polarizing filter in a change in intensity is converted. It can be improved by the described embodiment, but also all other display systems that emit polarized light.
• the display device may be modified so that the polarizing filter of the device can simultaneously serve as the front filter of the display device. Also in this case, a space between the device and the display device, especially the liquid crystal region, is necessary to reduce the heating of liquid crystals in the display device.
• a polarizing filter is a polarizing filter or polarizer that only determines
• Polfilter can by a
• Dichroic dyes very fine carbon filaments or diffused iodine are incorporated.
• the molecules By plastically stretching the film in one direction, the molecules are aligned in parallel along the drawing direction. These molecules absorb strongly anisotropic light after alignment. While unpolarized light which passes through a polarizing filter is almost not absorbed in a plane of vibration, in particular, the perpendicular orthogonal vibration plane of the light perpendicular thereto is almost completely absorbed.
• Polarizers are offered by many companies. As an example, the company ITOS from Mainz is called, which offers polarizing filters and also technical information on the operation of the polarizers on the Internet 'offers.
• the described polarizing filters are produced in large quantities for the display industry.
• the polarizing filter is usually provided with a self-adhesive layer in order to be attached directly to the front screen of the display device.
• the front side of the polarizer can optionally be equipped with a
• Antireflection coating be minimized, which minimizes annoying reflections on the front and contributes to increase the contrast in bright surroundings.
• the device according to the second aspect of the invention can be realized as a front and protective screen for a display in various ways.
• the polarizing filter described above is mounted on a first disc-shaped element, preferably on a solid glass plate, thus forming a simple composite. If such a composite is to be used as an attachment or as a protective screen for a display device, then the polarizer described above becomes a first disc-shaped one
• the polarizer described above can also be used between a first
• disc-shaped element and a second disc-shaped element are laminated, so that a solid composite is formed, which has an increased mechanical strength and can be allowed, for example, as a composite safety glass.
• Polymeric materials such as cast resin or foil, such as PVB (polyvinyl butyral) films, EVA (Ethylene vinyl acetate) films, PA (polyacrylate) films, PMMA
• Low-E coatings are an example of IR-reflective coatings, for example, based on transparent metal, in particular silver, which is a very high
• the polymer material or the film is liquefied or softened by pressure and with the first disc-shaped element and the glued second disc-shaped element to give the composite.
• the first and / or the last surface of the composite is coated with an anti-reflective or anti-reflective coating.
• the reflection in the visible wavelength range from 350 nm to 780 nm of a device is markedly reduced and thus the contrast is markedly increased compared to devices without antireflection coating.
• This contrast refers to the ratio of the light emitted by the display with respect to the ambient light reflected by the lens.
• the Reflectance R V i S by the anti-reflection coating by a factor of 4 to 50 compared to a non-coated with an anti-reflective coating disc-shaped element reduced.
• the reflectance R V j S of the disk-shaped element without antireflection coating is, for example, 8%, then the reflectance R is reduced by the antireflection coating to 0.1% to 6%, preferably to 0.2% to 4%.
• the above-mentioned reflectance R vis is a reflectance under standard light D65 (artificial daylight) folded with the eye sensitivity. Although the reflection for individual wavelengths may be greater than, for example, 2%, the standard light D65 may have a value R V i S of 1% or less.
• Antireflective coating provided element significantly increased.
• Anti-reflection coatings are preferably used interference layer systems. In such systems, at the interfaces of
• Antireflective coating reflects light. The at the interfaces
• reflected waves can even completely cancel themselves out by interference if phase and amplitude conditions are fulfilled.
• Such anti-reflection coatings are realized, for example, in the products AMIRAN, CONTURAN, or MIROGARD from Schott AG.
• the AR coating is preferably provided on a side of the first and / or the second disc-shaped element facing outward, ie towards the air.
• Anti-reflection or anti-reflective coatings come layers that are prepared by different methods, into consideration. Such layers can be prepared by a sol-gel method, sputtering method, etching method or CVD method. It is also possible to deposit directly on the polarizing filter such an AR coating. Specifically, the anti-reflection coating can be one of the above
• Arrangement of the polarization direction of the polarizing filter is a vibration level of the light in the optical spectral range between 380 nm and 780 nm against the corresponding orthogonal vibration level is strongly suppressed.
• technical polarizers achieve optically visible
• Sunscreening effect can be achieved already from suppression degrees of better than 1: 5 in the optically visible spectral range.
• the transmission of the light in the optical spectral range of 380 nm and 780 nm through the device according to the invention is in a ratio of passage through the device in parallel to orthogonal polarization direction of the polarizer, measured with polarized light of at least 3 to 1, preferably 5 to 1, especially preferably above 10 to 1.
• high contrasts for example contrasts ranging from 40 to 80, can be achieved without limitation.
• Such devices according to the invention may be in the range of
• Display devices in particular display devices in the outdoor area and are preferably used here for liquid crystal display devices.
• the device according to the invention is arranged as a front or protective screen in front of the display device, wherein preferably a distance is provided between the device and the display device, which is filled by a gaseous medium.
• the device according to the second aspect of the invention may be implemented in a further embodiment with an edge seal, which has the further advantage of
• Resistance to high humidity has. It is particularly preferred with regard to the corrosion resistance of a pole filter if, in a composite, the edge of the first disk-shaped element and of the second disk-shaped element comprises a sealing material.
• Sealing material which can be used for this purpose, for example
• Butyl rubber which is characterized by low gas permeability.
• An alternative sealing option is the seal by a circumferential
• the edge of the first and / or second disk-shaped element should be designed so that the applied polarizing filter and, if appropriate, additionally applied low-E layers do not corrode from the side of the composite.
• the edge delamination can be used, in which the low-E layer and the polarizing filter does not go to the edge and so the laminate can be sealed at the edge directly between the upper and lower glass.
• At least 5 mm of the disc are formed as an edge, in which the polarizing filter and optionally the IR-reflecting coating is interrupted or having no IR-reflective coating and no polarizing filter.
• the maximum border of the border is chosen so that the visible area is not disturbed for the viewer of the laminated glass pane.
• the invention also provides a display device with a display or a display device and an attachment disc, wherein the attachment disc as the device according to the invention comprises at least one disc-shaped element with polarizer applied and a space is arranged between the display or the display device and the attachment disc is.
• the attachment disc as the device according to the invention comprises at least one disc-shaped element with polarizer applied and a space is arranged between the display or the display device and the attachment disc is.
• liquid crystal display devices into consideration, but also other display devices in which the light emitted by the display is radiated highly polarized.
• FIG. 1a-b show the basic structure of a pane according to the invention with an IR-reflecting coating according to a first aspect of the invention
• IR coating as a function of the wavelength.
• one-sided anti-reflective 4 mm float glass laminated poly filter with parallel (equal) orientation of the polarizer with the analyzer and perpendicularly thereto as a function of the wavelength.
• FIG. 1a shows a plan view of a device 1 according to the invention and FIG. 1b a section along the line A-A according to the first aspect of the invention.
• the top view according to FIG. 1a shows the first disc-shaped element 3 according to a first aspect of the invention.
• the first disc-shaped element 3 comprises an edge 5 which is not provided with an IR-reflecting coating 9.
• the structure of the system or device 1, which is also referred to as a laminated glass element, of two disk-shaped elements 3, 7 can be seen more clearly from the sectional view along the line A-A according to FIG. Again, 3 denotes the first disk-shaped element.
• Coating is introduced between the first disk-shaped element 3 and the second disk-shaped element 7 and designated by the reference numeral 9.
• the IR-reflective coating forms together with the two
• disk-shaped elements a composite or a composite disk.
• a solid or liquid filler material 8 in particular a polymer material or a solidified inorganic substance introduced.
• the disk-shaped elements 3, 7 via the filling material 8 and the IR reflection coating 9 directly to each other, resulting in a laminated glass element.
• the edge 5 of both the disk-shaped element 3 and the disk-shaped element 7 is not provided with a filling material 8 or an IR-reflecting coating 9.
• the border area can a
• the preferred R V i S ⁇ 2%, in particular ⁇ 1% to achieve oxidic and / or conductive oxide matching layers 23.1, 23.2 may be provided, the reflectivity R V j S within the Minimize device 1 or laminated glass element.
• Such layers 23.1 are already used below the low-E layer 9 to the silver layer to the glass of the second disc-shaped element. 7
• a similar layer structure 23.2 can then also be used above the low-E layer 9, so that on both sides of the low-E layer 9 approximately symmetrical layer structures arise.
• These layers are composed of diffusion barrier layers to protect the silver of the low-E layer as well as matching layers of other oxides or nitrides, whose refractive index jumps and layer thicknesses are then designed as an Anpas harsh.
• the outside OUTSIDE that is, the air-facing side 13 of the device with an antireflection coating or an anti-reflection coating 20 is provided.
• the side 13 of the first disc-shaped element is provided with an antireflection coating or antireflection coating 20.
• the outside could be inside, d. H. the side 11 of the second disc-shaped element 7 be provided with an antireflection coating.
• antireflection coating or antireflection coating for example, produced by sol-gel method or sputtering
• Anti-reflective coatings are used. Below are two
• One-sided antireflection coating produced by the sol-gel method is the sol-gel method
• the coating consists of three individual layers each and has the structure: substrate + M + T + S.
• the single layer marked T contains titanium dioxide ⁇ 2
• the single layer marked S contains silicon dioxide S1O2
• the single layer marked M is drawn from each of S and T mixed solutions.
• the float glass substrate is thoroughly cleaned before coating.
• the immersion solutions are each applied in rooms conditioned at 28 ° C. at a relative humidity of 5 to 10 g / m 3, and the drawing speeds for the individual layers M / T / S are approximately 275/330/288 mm / min.
• the pulling of each gel layer is followed by a bake process in air.
• the bakeout temperatures and bakeout times are 180 ° C / 20 minutes after preparation of the first gel layer and 440 ° C / 60 minutes after preparation of the second and third gel layers.
• the immersion solution (per liter) is composed of: 68 ml of titanium n-butylate, 918 ml of ethanol (abs), 5 ml of acetylacetone and 9 ml of ethyl butyl acetate.
• the dip solution for the preparation of the S layer contains: 125 ml of silica methyl ester, 400 ml of ethanol (abs), 75 ml of distilled H 2 O, distilled 7.5 ml
• the coating solutions for producing the intermediate refractive index oxides are prepared by mixing the S + T solutions
• the layer marked M is drawn from a dipping solution having a silicon dioxide content of 5.5 g / l and a titanium dioxide content of 2.8 g / l.
• the applied wet-chemical sol-gel process allows as
• the adhesive is chosen to burn at 440 ° C within the burn-in time described above so that the slices leave the process separately.
• One-sided antireflection coating produced by the sputtering method is the following:
• the coating is coated in a continuous flow system with an MF sputtering process by magnetron sputtering, wherein the substrate is positioned on a so-called carrier and transported on the latter by the sputtering system.
• the substrate is first to "Dewatering" the surfaces preheated to about 150 ° C.
• an antireflective system (as an example consisting of four layers) is prepared as follows:
• the layer is produced by adding argon and reactive gas while controlling the reactive gas to a plasma impedance.
• the process pressure is determined in particular by the amount of argon, which leads to typical process pressures in the range between 1 * E-3 and 1 * E-2 mbar.
• the deposition in the plasma takes place via a pulsation.
• a contrast defined as T vis / Rvis can be achieved in the range from 10 to 60, preferably from 20 to 60, in particular from 40 to 50 under standard light Contrast values are less than 7.
• R vis denotes the reflectance of a layer at standard light D65, T V i S den
• FIG. 2 shows a display device 1000 with an inventive device
• Device 101 according to a first aspect of the invention as an attachment disc for a display, here a liquid crystal display 130 shown. As shown in FIGS. 1a-1b, the device 101 according to the invention is provided with a first one
• the liquid crystal display 130 lying behind the device 101 designed as an attachment disk comprises, without limitation, a liquid crystal 133 with illuminants 135 introduced between two disks 131.1, 131.2.
• the entire liquid crystal display 130 is integrated in a housing 137.
• the liquid crystal display 130 is only one possible display, other possible displays include controllable LED or OLED. Although a liquid crystal display is given, the invention is not limited thereto.
• the inventive device 101 as an attachment lens largely prevents light from the sun 150 from heating the space between the attachment lens and the liquid crystal display 130. Nevertheless, due to the own heat development of the liquid crystal display 130, it is necessary to actively cool it with a cooling device 160.
• the cooling device 160 can be dimensioned substantially smaller than in the prior art, since a heat input due to the solar irradiation between the disc and the liquid crystal display does not take place.
• FIG. 3a shows the reflectivity for devices with different layer systems over a wavelength of 400 nm to 2400 nm.
• Reference numeral 1000 denotes a system of silver-based
• the reference numeral 1010 the reflection and absorption of a system with an XIR film from the company Southwall and a
• Anti-reflection coating and the reference numeral 1020 a system according to the prior art with an anti-reflective coating and an IR-reflective film Siplex Solar Control, and as a comparison an anti-reflective coating with
• reflective IR mirror 1040 which reflects all wavelengths above 780 nm, the limit of visible light, and the idealized
• Laminated glass element consisting of two disk-shaped elements with the corresponding coatings.
• FIG. 1b Laminated glass element consisting of two disk-shaped elements with the corresponding coatings.
• Table 1 gives the data for the different layer systems shown in Figures 3a and 3b.
• the highest contrast occurs, namely 60, with the highest transmission T V i S , namely of 84%, at the highest IR solar reflection of 68% and low IR transmission T (IR) of only 9% for the device according to the invention comprising two disks with intervening silver-based IR. Reflection system in combination with a
• Anti-reflection coating on the first and / or second slices of the composite system is provided.
• the XIR film composite disk also has low transmission, but the IR solar reflectivity is only 40% and not 68% as in the case of the metal or silver-based IR reflection layer.
• the IR solar reflectivity is only 40% and not 68% as in the case of the metal or silver-based IR reflection layer.
• a high proportion of IR radiation of the natural sunlight or solar spectrum is absorbed or registered, as a result of which such a system inadmissibly heats up in relation to a system with a metal-based IR reflection layer.
• UV levels below 350nm were neglected, since the transmission here by the solid or liquid filler is already significantly reduced. Wavelengths above 2500nm were also not taken into account because glass above 2500nm itself strongly absorbed.
• an ideal IR mirror 1040 is also shown, which has no reflection below 780 nm in the visible range and exhibits 100% reflectivity above 780 nm.
• Figures 4a-4d and 5a-5b show the cross section through an inventive device with polarizing filter according to a second aspect of the invention.
• Fig. 4a 2001 denotes the first disc-shaped member.
• the polarization filter 2005 was connected directly to the first disk-shaped element by means of an adhesion layer 2003.
• FIG. 4 b shows an expanded solution variant in which the polarizer 2005 was introduced by means of two filling materials 2007 and 2009 between two disk-shaped elements 2001 and 2002.
• the polarizing filter 2005 together with the two disk-shaped elements 2001 and 2002, forms a composite or a composite pane.
• the composite in the space between the two disks 2001 and 2002 becomes a solid or liquid
• Filler 2007 and 2009 in particular a polymer material or a solidified inorganic substance introduced. Unlike one
• Insulating glass composite in which two discs are separated by a gap with a gaseous medium separated from each other, lie in the Inventive device, the disk-shaped elements 2001 and 2002 on the filler 2007 and 2009 and the polarizing filter 2005 directly to each other, resulting in a laminated glass element.
• FIGS. 5a and 5b illustrate the combination of the polarizing filters shown in FIG. 4 with additional IR-reflecting coatings, such as e.g. B. in Figures 1a to 1b is shown, which can be introduced into the structure.
• FIG. 5a and 5b illustrate the combination of the polarizing filters shown in FIG. 4 with additional IR-reflecting coatings, such as e.g. B. in Figures 1a to 1b is shown, which can be introduced into the structure.
• FIG. 5a shows, by way of example, the layer 2201, which may represent, for example, an XIR sun protection film and, in FIG. 5b, a layer 2202 which may be realized, for example, by a low-E layer.
• the entire conditions apply, as in the previous
• Antireflective coating or an anti-reflective coating 2300 are examples of antireflective coatings
• antireflection coating or antireflection coating for example, produced by sol-gel method or sputtering
• Anti-reflection coatings according to Examples 1 and 2 described above are used.
• a contrast defined as T V is R V is can be achieved in the range from 10 to 60, preferably from 20 to 60, in particular from 40 to 50, under standard light. with non-anti-glare windows, the contrast values are less than 7.
• R vis denotes the reflectance of a layer at standard light D65, T vis the transmittance. ie the reflectance or
• FIG. 6 shows a display device 2120 with an inventive device
• Liquid crystal display 2130 shown. As shown in Figure 5b and here
• the device according to the invention with a first disc-shaped element 2001 and a second disc-shaped element 2002 and an intermediate Pölfilter 2005 and a intermediate IR reflective layer 2202 and one on the
• the liquid crystal display device 2130 located behind the device designed as an attachment plate 101 includes, without limitation, a liquid crystal 2133 inserted between two panes 2131, 2132 and light source 2136.
• a rear polarizer 2134 is attached to the rear side of the pane 2131 and to the front side In the disk 2132, a front polarizer 2135 of the liquid crystal display 2130 is mounted.
• this front polarizer 2135 can also be dispensed with, its function in this embodiment then being replaced by the polarizer 2005 of FIG.
• the entire liquid crystal display 2130 is integrated in a housing 2137.
• the liquid crystal display 2130 is only one possible display, other possible displays include controllable LED or even OLED. Although a liquid crystal display is given, the invention is not limited thereto.
• the inventive device prevents as an additional disc 2101
• Attachment disc and the liquid crystal display 2130 heats up. Nevertheless, due to the inherent heat development of the liquid crystal display 2130, it is necessary to actively cool it with a cooling device 2160.
• the cooling device 2160 can be dimensioned substantially smaller than in the prior art, since a heat input due to the solar irradiation between the disc and the liquid crystal display does not take place.
• FIG. 7 shows the transmission for devices with incorporated polarizer and different layer systems over a wavelength of 400 nm to 2000 nm.
• the curve 2500 shows the transmission for a device 2010 from a polarizer, which was laminated by means of polyurethane film between two disk-shaped, transparent elements of the thickness 4 mm, analogously to the structure in drawing 1b.
• the transmission in this curve is in the range 430 nm to above 750 nm above 60% transmission.
• Curve 2501 represents the same structure as curve 2500, with the sample rotated 90 °.
• the transmission is here in the range 430 nm to 750 nm below 10%, in large parts even below 1% transmission.
• FIG. 8 shows the reflection for devices with incorporated polarizer and different layer systems over a wavelength of 400 nm to 2000 nm.
• the total reflection of the device 2010 against reflection using an uncoated float glass of about 8% in the visible range of light between 380 nm and 780 nm is significantly reduced.
• Table 2 shows the data for the reflections and transmissions of
• an IR-reflecting film it is possible for the first time to provide a high optical contrast, i. to achieve the ratio of the desired radiation from the display device against the disturbing reflection of sunlight, in the visible wavelength range, especially in an outdoor application, without significantly reducing the brightness of the display device and at the same time to reduce the heat input in particular via a solar radiation in the visible wavelength range.
• Another advantage is the ease of manufacture, since standard processes and films can be used to implement the described invention.

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• Crystallography & Structural Chemistry (AREA)
• Chemical & Material Sciences (AREA)
• General Physics & Mathematics (AREA)
• Mathematical Physics (AREA)
• Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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• Surface Treatment Of Glass (AREA)
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• 2010
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